CN118273657A - Put in formula electric oil pipe inner wall drilling tool - Google Patents
Put in formula electric oil pipe inner wall drilling tool Download PDFInfo
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- CN118273657A CN118273657A CN202211706429.3A CN202211706429A CN118273657A CN 118273657 A CN118273657 A CN 118273657A CN 202211706429 A CN202211706429 A CN 202211706429A CN 118273657 A CN118273657 A CN 118273657A
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- 238000005553 drilling Methods 0.000 title claims abstract description 76
- 230000007246 mechanism Effects 0.000 claims abstract description 114
- 230000005540 biological transmission Effects 0.000 claims abstract description 91
- 230000005284 excitation Effects 0.000 claims abstract description 54
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 20
- 210000004907 gland Anatomy 0.000 claims description 58
- 238000007789 sealing Methods 0.000 claims description 40
- 230000000149 penetrating effect Effects 0.000 claims description 19
- 230000033001 locomotion Effects 0.000 claims description 11
- 230000001174 ascending effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000005570 vertical transmission Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 12
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- 238000009434 installation Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a put-in type electric oil pipe inner wall drilling tool which comprises a drill bit pressurizing mechanism, a drill bit rotating mechanism, a power transmission mechanism, a power output mechanism and a starting mechanism which are connected in sequence; the drill bit pressurizing mechanism is used for applying pressure to the drill bit to advance so as to ensure that the drill bit drills a hole in the rotating process; the main function of the drill bit rotating mechanism is to rotate the drill bit, advance drilling and automatically retract the drill bit after drilling; the power transmission mechanism transmits the power of the motor to the drill bit rotating mechanism, and the drill bit is decelerated to a proper rotating speed; the power output mechanism provides power for the drill bit rotating mechanism; the starting mechanism starts the power output mechanism after the excitation head is impacted to output power; the tool is extremely simple and convenient to operate, high in success rate, free of other conveying modes such as cable conveying and capable of being directly put into an oil pipe, and capable of opening drilling once the drilling tool reaches the depth of needing drilling, so that labor intensity and operation risk are effectively reduced, and construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of downhole operation of oil and gas wells, in particular to a drilling tool for the inner wall of a put-in electric oil pipe.
Background
In recent years, with deep production of various large oil fields, oil and gas wells are more and have dense well positions, and in the production of the oil and gas wells in the tired year, downhole tools of many oil and gas wells are severely corroded by stratum fluid, and the downhole tools need to be overhauled. In order to ensure well control safety, a channel for circulating workover fluid needs to be established before workover operation. Because the underground condition of the oil and gas well is complex, the problems of sand blocking, oil drainage device, sliding sleeve failure and the like often occur, so that the oil pipe is blocked, and circulation cannot be established from the ground, namely, annulus between the oil pipe and the sleeve is not communicated. This has not only brought great well control risk, and at the in-process of lifting the tubular column, the interior liquid of oil pipe can be brought ground moreover, and the unrestrained drill floor brings environmental protection problem, also can influence constructor's work efficiency, especially freezes in winter, can bring the safety problem for constructor. To achieve the perforating operation on the tubing, the conventional method is: 1) The steel wire (cable) operation conveying mechanical puncher realizes oil pipe punching by lifting and lowering the steel wire, but the punching efficiency and success rate of the method are low, and sometimes even the puncher meets the conditions of clamping in the underground, falling of the steel wire into the well and the like; 2) Methods of perforating in tubing (explosive blasting) not only take a long time, but also result in increased costs and reduced production time. The existing tools and the existing punching methods cannot meet the construction requirements of the existing underground operation. Therefore, there is a need for an oil pipe drilling tool that is simple and convenient to use, has a high success rate, is safe and risk-free, improves the construction efficiency of drilling operation, reduces the operation cost, and ensures the operation safety.
Disclosure of Invention
The invention aims to provide a put-in type electric oil pipe inner wall drilling tool which can be directly put into an oil pipe and reach the depth of a hole to be drilled and realize the hole drilling without other transmission modes such as cable transmission and the like.
For this purpose, the technical scheme of the invention is as follows:
A put-in type electric oil pipe inner wall drilling tool comprises a drill bit pressurizing mechanism, a drill bit rotating mechanism, a power transmission mechanism, a power output mechanism and a starting mechanism which are connected in sequence; the drill bit pressurizing mechanism comprises a supporting rod, an upper pressing cap, a large pressure spring, a pushing wheel shaft seat, a pushing wheel, a pushing rod seat, a rack gland, a rack frame, a driving wheel, a supporting shaft, a limiting block, a pushing wheel round shaft, a pushing rod, a limiting block rotating shaft, a pushing rod rotating shaft and a lower pressing cap; the drill bit rotating mechanism comprises a drill bit, a chuck, a shifting fork, a cover plate, a shifting fork rotating shaft, a reset spring, a spline housing, a spline shaft, a large bearing, a small bevel gear, a large bevel gear and a first clamp spring; the large compression spring is sleeved outside the support rod in a compressed state, and two ends of the large compression spring respectively prop against an upper compression cap and a lower compression cap which are fixed on two end sides of the support rod; The pushing wheel axle seat consists of a horizontal top plate, an arc-shaped vertical plate and a horizontal bottom plate which are sequentially connected; the supporting rod is vertically fixed at the center of the top surface of the push wheel shaft seat; the pushing wheel consists of a central tube which is horizontally arranged and a ring body which is sleeved on the outer side of the central tube, wherein the ring body is arranged in a way that the front surface of the ring body faces to the arc-shaped vertical plate, and the front surface of the ring body is processed into a lifting surface, a small connecting surface, a small descending surface and a large connecting surface which are sequentially connected; the rack frame is a rectangular frame which is vertically arranged and provided with racks on the vertical edge of one side in the frame, the top end of the rack frame is penetrated in a strip-shaped hole formed in the horizontal top plate and is propped against the pressing cap, and the bottom end of the rack frame is inserted in a guide limit groove formed by surrounding the push rod seat and the rack gland; The driving wheel is fixed on the back of the push wheel and meshed with the inner toothed bar of the rack frame, and the driving wheel and the push wheel are rotatably arranged on a transmission shaft which is horizontally arranged and the shaft end of which is fixed on the arc-shaped vertical plate; the limiting block is a plate body with an outer cambered surface and an inner plane, and the outer cambered surface gradually changes from slow length to steep length; the outer side surface of the push rod seat is fixed on the end side of the horizontal bottom plate of the push wheel shaft seat, and an L-shaped through groove penetrating to the horizontal bottom plate is formed in the middle of the lower side of the arc-shaped vertical plate of the self-push wheel shaft seat; the push rod is a vertically arranged strip rod body, the top end of the rod body is inserted in the L-shaped through groove, and the middle part of the rod body is hinged on the push rod seat through a push rod rotating shaft which is arranged in an annular body on the inner side surface of the push rod and two push rod rotating shaft supporting frames arranged on the outer side surface of the push rod seat in a penetrating way; the round shaft of the push wheel is a cylinder with a hemispherical end at one end and an external thread at the other end, and the round shaft of the push wheel is fixed on the inner side surface of the self-push rod in a way that the hemispherical end faces the front surface of the push wheel, so that the round shaft of the push wheel can push the push rod to swing inwards and outwards around the rotating shaft of the push rod by utilizing the space change of the rising surface and the falling surface of the front surface of the push wheel in the rotating process; the slow-length end of the limiting block is hinged in the through hole through a limiting block rotating shaft vertically fixed on the rack pressing cover and can do small-angle rotating movement; the limiting block is provided with a bar-shaped through hole which can be communicated with an axial through hole formed in the rack pressing cover along the axial direction, so that a shifting fork with a bar-shaped structure is arranged in the bar-shaped through hole in the limiting block and the rack pressing cover in a penetrating manner and is hinged on the rack pressing cover through a shifting fork rotating shaft horizontally arranged in a rack pressing cover and a shifting fork center hole in a penetrating manner so as to swing back and forth in the bar-shaped through hole; The bottom end of the shifting fork is provided with a single tooth; the chuck is a circular plate with a stepped through hole in the center and a tooth slot capable of being meshed with a single tooth on the outer edge; the front end of the spline housing is fixed in the stepped through hole of the chuck; the spline shaft is a shaft body with a large-diameter spline at one end and a round head end at the other end, the large-diameter spline is sleeved in a spline housing with a sliding key slot inside, and the round head end is propped against the inner side surface of the bottom end of the push rod; the rear end of the drill bit is fixed at the front end of the spline shaft, and the front end of the drill bit is exposed to the outer side of the chuck through the stepped through hole of the chuck; the reset spring is sleeved outside the drill bit, and two ends of the reset spring respectively prop against the stepped end face of the stepped through hole of the chuck and the front end of the large-diameter spline; The large supporting bearing is sleeved on the outer side of the spline housing, is fixed on the push rod seat through a connecting piece fixed on the outer wall, and two ends of the large supporting bearing respectively abut against a first clamping spring embedded on the outer wall of the spline housing and an outer annular boss at the bottom end of the spline housing; the cover plate is a square plate with a stepped through hole in the center, and is sleeved and fixed on the outer side of the spline housing; the large bevel gear is sleeved and fixed on an outer annular boss at the bottom end of the spline housing, and the small bevel gear is sleeved and fixed on a transmission shaft which is arranged on the power transmission mechanism in a vertical manner and meshed with the large bevel gear; a speed reducing mechanism is arranged in the power transmission mechanism so as to transmit motor power in the power output mechanism to the drill bit rotating mechanism at a proper rotating speed; the starting mechanism is an excitation mechanism which is internally provided with a motor for driving the power output mechanism to start so as to drive the motor of the power transmission mechanism to work.
Further, the power transmission mechanism comprises a fixed seat, a sealed transmission shaft, a large gear, a small gear, a base, a first bearing, a second bearing, a third bearing, a transmission shaft and a second clamp spring; the fixed seat consists of a cylindrical table body and a fixed plate vertically fixed at the center of the top surface of the table body; the upper part of the fixed plate is fixed on the upper part and the lower part of the push rod seat, sleeved and fixed on the outer side of the supporting large bearing through the through holes; the sealing transmission shaft is vertically inserted in a through hole formed in the cylindrical table, and a first bearing and a large gear mounting hole communicated with the through hole for inserting the sealing transmission shaft and a small gear mounting hole communicated with the first bearing and the large gear mounting hole are formed in the bottom surface of the cylindrical table body; the first bearing and the large gear are sequentially sleeved and fixed on the sealed transmission shaft from bottom to top and are arranged in the first bearing and the large gear mounting hole, so that the sealed transmission shaft drives the large gear mounting hole to rotate freely; the pinion is arranged in the pinion mounting hole and meshed with the large gear; the base is fixed on the bottom surface of the cylindrical platform body, the transmission shaft vertically penetrates through the central through hole of the base through the third bearing, and the top end of the transmission shaft penetrates through and is fixed in the central hole of the pinion; the bottom end of the third bearing is limited by a second clamp spring arranged on the wall of the central through hole; the bottom end of the transmission shaft is rotatably fixed in a blind hole formed in the top surface of the base through a second bearing.
Further, the power output mechanism comprises a motor cylinder, a motor chuck, a shaft coupling, a motor, a connector, a battery cylinder, a first female plug, a control circuit board, an electric wire, a battery and a first rubber clamping body; the starting mechanism comprises an adapter, an excitation sleeve, a shear pin, an excitation head, a second female plug, a male pin and a second rubber clamping body; wherein, the motor cylinder, the connector, the battery cylinder, the adapter and the excitation sleeve are sequentially connected from top to bottom; the motor is fixed in the motor cylinder through a motor chuck in a mode that an output shaft of the motor is vertically upwards, and the output shaft of the motor is connected with a transmission shaft through a coupler; the first female plug is fixed in an upper cavity of the connector through a first rubber clamping body in a mode that a female port faces upwards, and the control circuit board is fixed in a lower cavity of the connector; the battery is arranged in the battery cylinder, and epoxy resin is poured into the inner cavity of the battery cylinder; the second female plug is fixed in a central hole of the adapter through a second rubber clamping body in a mode that a female port faces downwards; the excitation head is a cylindrical body with a blind hole at the center of the top surface, the excitation head is sealed and sleeved in the excitation sleeve, the top end of the excitation head is in sealed insertion connection with an annular slot formed around the center hole on the bottom surface of the self-rotation joint, and the bottom end of the excitation head extends from an axial through hole of the excitation sleeve to the outer conical end; the male pin is arranged at the bottom of the blind hole of the excitation head in a way that the male end of the male pin is vertically upwards; the excitation head is fixed on the excitation sleeve through two copper shear nails symmetrically arranged on the excitation sleeve; the positive electrode of the motor, the first female plug and one wiring connected with the control circuit board are electrically connected through wires in sequence, and the negative electrode of the battery is electrically connected to the inner wall of the motor barrel through wires; the other end of the control circuit board is electrically connected with the anode of the battery through an electric wire; the negative electrode of the battery is electrically connected with the second female plug through an electric wire.
Further, the drill bit pressurizing mechanism further comprises a support column; the support column is a cylinder with one end provided with a conical end head, the middle part provided with an annular flange and the other end provided with external threads, the threaded end of the cylinder penetrates through the outer side face of the push rod and is fixed in a support threaded hole formed below the round shaft of the push wheel, and the annular flange in the middle part of the support column abuts against the outer side face of the push rod.
Further, the drill bit rotating mechanism further comprises a sheath, wherein the sheath is a semicircular annular guard plate which is vertically arranged, is arranged on the outer side of the push rod at the side opposite to the drill bit, and is fixed on the top surface of the fixing seat.
Further, the power transmission mechanism further comprises two sealing glands and two rotary seals, and the sealing glands are adapted to the rotary seal structure; a sealing hole communicated with the through hole for inserting the sealing transmission shaft is formed in the top surface of the cylindrical table body; the two rotary seals and the two seal glands are respectively arranged on the seal transmission shaft in a penetrating manner in a pressing manner of one seal gland above one rotary seal and are arranged in the seal hole, and the two seal glands are sequentially arranged on the bottom of the communication seal hole in a penetrating manner by screws.
Further, the power output mechanism also comprises a motor bracket, a supporting spring, a supporting seat and a third clamping spring; the motor bracket, the supporting spring and the supporting seat are arranged in the motor cylinder from top to bottom through a third clamping spring arranged on the inner wall of the motor cylinder, so that the top end of the motor bracket is supported on the bottom surface of the motor.
Compared with the prior art, this put in type electric oil pipe inner wall drilling tool need not other conveying modes such as cable conveying, can directly throw into in the oil pipe, in case drilling tool reaches the degree of depth that needs to drill, below actuating mechanism striking is opened, the battery provides power supply starting motor, output torque to drill bit rotary mechanism through power transmission mechanism, and apply the weight on bit for the drill bit through drill bit pressurizing mechanism, make the drill bit rotatory advance eat oil pipe drilling, the drill bit is automatic to be retracted after accomplishing the operation, circuit automatic cutout, the operation of messenger's instrument is extremely simple and convenient, the success rate is high, thereby reduce construction process, effectively reduce intensity of labour and operation risk, improve efficiency of construction by a wide margin, save manufacturing cost, realize reducing cost and increasing efficiency.
Drawings
FIG. 1 is a full cross-sectional view of a launched electric tubing inner wall drilling tool of the present invention (drill bit drilled state);
FIG. 2 is an external three-dimensional view (drill-out state) of the bit pressurizing mechanism, bit rotating mechanism and power transmission mechanism in the launched electric oil pipe inner wall drilling tool of the present invention;
FIG. 3 is a right side view (drill bit drilling state) of the bit pressurizing mechanism, bit rotating mechanism and power transmission mechanism in the launched electric oil pipe inner wall drilling tool of the present invention;
FIG. 4 is a front view of the bit pressurizing mechanism, bit rotating mechanism and power transmission mechanism of the launched electric tubing inner wall drilling tool of the present invention (i.e., view A of FIG. 3, bit drilling state);
FIG. 5 is a right side full cross-sectional view (i.e., section B-B of FIG. 4, drill bit drilling status) of the drill bit pressurizing mechanism, drill bit rotating mechanism and power transmission mechanism of the launched electric oil pipe inner wall drilling tool of the present invention;
FIG. 6 is a cross-sectional view of C-C of FIG. 4;
FIG. 7 is a sectional view of D-D of FIG. 5;
FIG. 8 is an enlarged view of a portion of FIG. 5 at E;
FIG. 9 is an enlarged view of a portion of FIG. 5 at F;
FIG. 10 is a three-dimensional view of a push wheel axle seat of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 11 is a three-dimensional view of the push wheel of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 12 (a) is a three-dimensional view of the push rod seat of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 12 (b) is a front view of the push rod seat of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 12 (c) is a right side elevational view in full section of the push rod seat of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 13 (a) is a three-dimensional view of a rack gland of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 13 (b) is a top view of the rack gland of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 13 (c) is a right side view of the rack gland of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 14 is an elevation view of a rack frame of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 15 is a top view of a stop block of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 16 is a three-dimensional view of the push rod of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 17 is a three-dimensional view of the push wheel of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 18 is a three-dimensional view of the fork of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 19 is a three-dimensional view of the cover plate of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 20 is a three-dimensional view of the spline housing of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 21 is a three-dimensional view of the spline shaft of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 22 (a) is a three-dimensional view of the holder of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 22 (b) is a right side elevational view in full section of the holder of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 23 (a) is a three-dimensional view of the base of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 23 (b) is a right side elevational view in full section of the base of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 24 is a full cross-sectional view of the power take-off and activation mechanism of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 25 (a) is a full cross-sectional view of the motor barrel of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 25 (b) is a G-G view of the motor barrel of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 26 is a three-dimensional view of the motor chuck of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 27 is a three-dimensional view of the motor mount of the launched electric tubing inner wall drilling tool of the present invention;
FIG. 28 is a full cross-sectional view of the adapter of the launched electric tubing inner wall drilling tool of the present invention;
Fig. 29 is a three-dimensional view of the trigger head of the launched electric tubing inner wall drilling tool of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and specific examples, which are in no way limiting.
Referring to fig. 1, the thrown-in electric oil pipe inner wall drilling tool comprises a drill bit pressurizing mechanism 1, a drill bit rotating mechanism 2, a power transmission mechanism 3, a power output mechanism 4 and a starting mechanism 5 which are connected in sequence; wherein,
Referring to fig. 2, the drill bit pressurizing mechanism 1 is used for applying pressure to the drill bit to advance so as to ensure that the drill bit can eat an oil inlet pipe and drill a hole channel in the rotating process; specifically, the drill bit pressurizing mechanism 1 comprises a supporting rod 1-1, an upper pressing cap 1-2, a large pressure spring 1-3, a push wheel shaft seat 1-4, a push wheel 1-5, a push rod seat 1-6, a rack gland 1-7, a rack frame 1-8, a driving wheel 1-9, a supporting shaft 1-10, a limiting block 1-11, a push wheel round shaft 1-12, a supporting column 1-13, a push rod 1-14, a limiting block rotating shaft 1-15, a push rod rotating shaft 1-16 and a lower pressing cap 1-17; in particular, the method comprises the steps of,
The support rod 1-1 is a cylindrical rod body, the outer wall of the top end of the support rod is penetrated and arranged in a central hole of the upper pressing cap 1-2 in a threaded connection manner, and the outer wall of the bottom end of the support rod is penetrated and arranged in a central hole of the lower pressing cap 1-17; the large compression spring 1-3 is sleeved on the outer side of the supporting rod 1-1 in a compressed state, the top end of the large compression spring is pressed and matched on the lower end face of an outer annular flange arranged on the outer wall of the upper compression cap 1-2, and the bottom end of the large compression spring is pressed and matched on the upper end face of the outer annular flange arranged on the outer wall of the bottom end of the lower compression cap 1-17; when the device is used, the compression degree of the large pressure spring 1-3, namely the force accumulation degree of the large pressure spring 1-3, is adjusted by adjusting the position of the upper pressure cap 1-2 on the support rod 1-1;
Referring to fig. 10, the push wheel axle seat 1-4 is composed of a horizontal top plate, an arc-shaped vertical plate and a horizontal bottom plate which are sequentially connected, and an L-shaped through groove which penetrates through the horizontal bottom plate is formed in the middle of the lower part of the arc-shaped vertical plate; the center of the horizontal top plate is provided with a threaded blind hole 1-4-1, so that the bottom end of the supporting rod 1-1 is fixedly connected with the horizontal top plate through threads; a strip-shaped through hole 1-4-2 is formed along the side edge on the horizontal top plate at one side far away from the arc-shaped vertical plate and is used as a rack frame placing groove; the width of the L-shaped through groove is larger than that of the push rod 1-14, and a threaded through hole 1-4-3 is formed in the center of an arc-shaped vertical plate above the L-shaped through groove; two horizontal through holes with built-in bolts are symmetrically formed in the horizontal bottom plate;
Referring to FIG. 11, a push wheel 1-5 is composed of a central tube which is horizontally arranged and a torus which is sleeved outside the central tube, wherein the back surface of the torus is a plane, and the front surface of the torus is processed into a lifting surface 1-5-1, a connecting facet 1-5-2, a descending surface 1-5-3 and a connecting large facet 1-5-4 which are sequentially connected; wherein, the ascending surface 1-5-1 and the descending surface 1-5-3 are both arc curved surfaces. The connecting small plane 1-5-2 and the connecting large plane 1-5-4 are sector planes; the push wheel 1-5 is arranged in the push wheel shaft seat 1-4 in a way that the front surface of the push wheel is towards an arc-shaped vertical plate of the push wheel shaft seat 1-4;
Referring to fig. 14, rack frames 1-8 are rectangular frames arranged vertically, and racks are arranged on the vertical edges of one side in the frames; the top end of the rack frame 1-8 is inserted into the strip-shaped through hole 1-4-2; in the initial state, the pressing cap 1-17 is abutted against the top surface of the rack frame 1-8; after drilling, the lower end surface of the pressing cap 1-17 is pressed and matched on the top surface of the pushing wheel axle seat 1-4, at the moment, the elastic force of the large pressure spring 1-3 acts on the pressing cap 1-17 and acts on the rack frame 1-8 through the pressing cap 1-17, so that the rack frame 1-8 is pushed to descend in the strip-shaped through hole 1-4-2;
The driving wheel 1-9 is a gear which is internally arranged in the rack frame 1-8 and meshed with the rack, is coaxially arranged with the push wheel 1-5 and is fixed on the back surface of the push wheel 1-5; the transmission shaft 1-10 is horizontally arranged and sequentially penetrates through the central hole of the transmission wheel 1-9 and the central tube of the push wheel 1-5, so that the push wheel 1-5 and the transmission wheel 1-9 synchronously rotate around the transmission shaft 1-10; the shaft end of the transmission shaft 1-10 is fixedly connected in the threaded through hole 1-4-3 through threads;
Referring to fig. 12 (a), 12 (b) and 12 (c), the putter blocks 1 to 6 are vertically arranged plate bodies; the upper part of the positive side plate surface of the push rod seat 1-6 is provided with a transverse strip-shaped groove in the middle, and the limiting block blocking groove 1-6-2 is used for placing the limiting block 1-11 and preventing the limiting block 1-11 from being excessively embedded into the push rod seat 1-6; meanwhile, the positive side plate surface forms a guide slideway through four supporting blocks 1-6-3 respectively fixed at four vertex angles, so that the lower part of the rack frame 1-8 is inserted into the guide slideway and can reciprocate up and down along the guide slideway; two screw holes are symmetrically formed in the upper part of the back side plate surface of the push rod seat 1-6, so that the push rod seat is fixed on a horizontal bottom plate of the push wheel shaft seat 1-4 through bolts; the lower part of the back side plate surface of the push rod seat 1-6 is provided with a fixed plate installation through groove which is matched with the fixed seat 3-1, and the side wall of the bottom end of the plate body is symmetrically provided with two first pin holes 1-6-1 which are communicated with the fixed plate installation through groove; two annular push rod rotating shaft supporting frames 1-6-4 are symmetrically fixed at the bottom sides of the plate surfaces positioned at two sides of the fixing plate mounting through groove and are used for placing the push rod rotating shafts 1-16;
Referring to fig. 13 (a), 13 (b) and 13 (c), the rack gland 1-7 is a block having a size equivalent to that of the push rod seat 1-6, and is vertically disposed adjacent to the push rod seat 1-6; the adjacent side of the rack gland 1-7 and the push rod seat 1-6 is a plane, and the outer side surface is a cambered surface; two embedded blocks 1-7-1 are symmetrically fixed on the plane side of the rack gland 1-7, are respectively embedded between the supporting blocks 1-6-3 on the same side and are fixed on the front surface of the push rod seat 1-6 through screws, so that the rack gland 1-7 and the push rod seat 1-6 are surrounded to form a strip-shaped guide limit groove for limiting the up-and-down reciprocating motion of the rack frame 1-8; a rectangular through groove penetrating to the bottom surface of the rack gland 1-7 is formed in the middle of the top surface of the rack gland 1-7, and is a first shifting fork movable groove 1-7-2 which is used as a movable space of a shifting fork 2-3, and the width of the first shifting fork movable groove 1-7-2 is larger than the diameter of a cylinder at the top of the shifting fork 2-3, so that the shifting fork 2-3 can rotate left and right around a shifting fork rotating shaft 2-6 in the space; a shifting fork rotating shaft mounting blind hole 1-7-3 is formed in the middle part of one side of the plane of the rack gland 1-7 in a downward position; a limiting block movable through hole 1-7-5 is transversely formed in the central position of the top side of the rack gland 1-7, so that the limiting block 1-11 can rotate around a limiting block rotating shaft 1-15 in the hole at a small angle; the top surface of the rack gland 1-7 is also provided with a first limiting block rotating shaft mounting blind hole 1-7-4 which is communicated with the limiting block movable through hole and is used for mounting a limiting block rotating shaft 1-15;
Referring to fig. 15, the limiting block 1-11 is a plate body with an arc surface on the outer side and a plane on the inner side, and the arc surface on the outer side gradually changes from slow length to steep length, namely, the arc diameter of the arc surface on one side of the outer side is larger, the arc is longer slowly and is consistent with the arc surface on the outer side of the rack gland 1-7, and the arc diameter of the arc surface on the other side connected with the limiting block is smaller, the arc is steeper and shorter, and a protruding arc head is formed; the limiting block 1-11 is provided with a strip-shaped through hole with gradually reduced width from one end to the other end in the middle, and the strip-shaped through hole is used as a second shifting fork movable groove 1-11-1; the side hole walls at the two ends of the strip-shaped through hole are preferably processed into cambered surfaces; the minimum width of the second shifting fork movable groove 1-11-1 is slightly larger than the diameter of the cylinder at the top of the shifting fork 2-3, so that the shifting fork 2-3 can rotate left and right in the groove; a through hole is formed in one end, located on the outer side of the limiting block 1-11, of which the arc surface is gentle, and is a second limiting block rotating shaft mounting hole 1-11-2;
Referring to FIG. 6, a limiting block 1-1 is inserted into a limiting block movable through hole 1-7-5 in a manner that an inner side plane faces inwards and an outer side cambered surface faces outwards, and a limiting block 1-11 is hinged on a rack gland 1-7 by sequentially inserting a limiting block rotating shaft 1-15 fixed in a first limiting block rotating shaft mounting hole 1-7-4 and a second limiting block rotating shaft mounting hole 1-11-2; in the initial state, the slow-long arc surface of the limiting block 1-11 is overlapped with the outer arc surface of the rack gland 1-7, and part of the limiting block 1-11 is positioned in a guiding limiting groove formed by the rack gland 1-7 and the push rod seat 1-6, so that the bottom surface of the rack frame 1-8 is pressed on the upper plane of the limiting block 1-11 to block the rack frame 1-8 so as to prevent the rack frame from descending;
Referring to fig. 16, the push rods 1 to 14 are vertically arranged elongated rods; the upper part of the rod body is provided with a push wheel round shaft hole 1-14-2 and a supporting threaded hole 1-14-3 at intervals from top to bottom; the thickness of the middle part of the rod body is increased, an annular body provided with a first rotating shaft hole 1-14-1 is fixed on the inner side surface, and the axial direction of the first rotating shaft hole 1-14-1 is parallel to the inner side surface of the rod body and perpendicular to the axial directions of the pushing wheel rotating shaft hole 1-14-2 and the supporting threaded hole 1-14-3 so as not to damage the structural strength of the rod body; the inner side surface of the lower part of the rod body is a plane, the outer side surface is an inclined plane, so that the thickness of the lower part of the rod body is gradually reduced to form a pressure head 1-14-4 for propping against the round head end of the spline shaft 2-9;
the push rod 1-14 is hinged on the push rod seat 1-6 through a push rod rotating shaft 1-16 penetrating through two push rod rotating shaft supporting frames 1-6-4 and a first rotating shaft hole 1-14-1, the top end of the push rod is arranged in an L-shaped through groove of the push wheel shaft seat 1-4, and the inner side surface of the bottom end of the push rod is propped against the round head end of the spline shaft 2-9;
The round shaft 1-12 of the push wheel is a cylinder with a hemispherical end at one end and an external thread at the other end, and the round shaft is penetrated into the first rotating shaft hole 1-14-1 from the inner side surface of the push rod 1-14 and is fixed on the push rod 1-14 through a nut connected with the end part through threads; the hemispherical end of the push wheel round shaft 1-12 is propped against the front surface of the push wheel 1-5, and the space change of the rising surface 1-5-1 and the falling surface 1-5-3 arranged on the front surface thereof in the rotating process is utilized to push the push wheel round shaft 1-12 to drive the top end of the push rod 1-14 to reciprocate in the horizontal direction, namely, extend outwards and retract inwards; further, the push rod 1-14 swings around the push rod rotating shaft 1-16, namely, the bottom end of the push rod 1-14 also reciprocates in the horizontal direction, namely, extends outwards and retracts inwards; the support column 1-13 is a cylinder with one end provided with a conical end, the middle part provided with an annular flange and the other end provided with external threads, the threaded end of the cylinder penetrates through the outer side surface of the push rod 1-14 and is fixed in the support threaded hole 1-14-3, and the annular flange in the middle part is propped against the outer side surface of the push rod 1-14.
The main function of the drill bit rotating mechanism 2 is to rotate the drill bit, advance drilling and automatically retract the drill bit after drilling; referring to fig. 2 to 5, 7 and 8, the bit rotating mechanism 2 comprises a bit 2-1, a chuck 2-2, a shifting fork 2-3, a cover plate 2-4, a sheath 2-5, a shifting fork rotating shaft 2-6, a reset spring 2-7, a spline housing 2-8, a spline shaft 2-9, a large bearing 2-10, a small bevel gear 2-11, a large bevel gear 2-12 and a first clamp spring 2-13;
The drill bit 2-1 is a commercially available twist drill, and the outer diameter of the drill bit 2-1 can be selected according to the size of the drill, specifically, the range is 6-15 mm; the drill point angle of the drill bit 2-1 is preferably 135 degrees so as to have a self-centering function, and the spiral angle of the drill bit 2-1 is preferably 30 degrees so as to have the advantages of good chip removal and high cutting edge strength;
Referring to fig. 17, the chuck 2-2 is a circular plate with a first circular stepped through hole at the center, and a tooth slot 2-2-1 is machined on the outer edge of the circular plate; the first circular stepped through hole is composed of a small-aperture hole close to the outer side surface of the chuck 2-2 and a large-aperture hole close to the inner side surface of the chuck 2-2, wherein the small-aperture hole is matched with the outer diameter of the drill bit 2-1, and the large-aperture hole is matched with the outer diameter of the front end of the spline housing 2-8;
Referring to fig. 18, a fork 2-3 is a bar-shaped body, the top end of which is fixedly provided with a cylinder coaxially arranged, the middle of which is provided with a rotating shaft hole 2-3-1, and the bottom end of which is processed into a single tooth 2-3-2 capable of being meshed with a tooth socket 2-2-1; preferably, the middle size of the shifting fork 2-3 is slightly increased so as to improve the structural strength of the shifting fork 2-3;
Referring to fig. 19, the cover plate 2-4 is a square plate with a second circular stepped through hole at the center, the four vertex angles of the square plate are processed into circular arc chamfers, and four through holes are uniformly distributed on the plate body close to the four vertex angles; the second round stepped through hole is composed of a small-aperture hole close to the outer side surface of the cover plate and a large-aperture hole close to the inner side surface of the cover plate, the diameter of the small-aperture hole is smaller than the outer diameter of the chuck 2-2 and larger than the outer diameter of the external thread end of the spline housing 2-8, and the diameter of the large-aperture hole is matched with the outer diameter of the large bearing 2-10;
Referring to fig. 7, the sheath 2-5 is a semicircular guard plate which is arranged opposite to the drill bit 2-1 and is positioned at the outermost side so as to protect the small bevel gear 2-11, the large bevel gear 2-12, the spline shaft 2-9 and other parts; in actual installation, the sheath 2-5 is fixed on the top surface of the fixed seat 3-1 of the lower power transmission mechanism 3;
Referring to fig. 20, spline housing 2-8 is a cylinder with an axial through hole in the center, an annular groove in the middle, and an outer annular boss on the outer wall of the bottom end; spline grooves are machined on the inner wall of the axial through hole of the spline housing 2-8;
Referring to fig. 21, the spline shaft 2-9 is a shaft body with a large-diameter spline at one end, a gradually reduced middle diameter and a round head end at the other end, and a blind hole for inserting the drill bit 2-1 is axially formed in the end face of the large-diameter end;
Referring to fig. 7 and 8, the large-diameter spline of the spline shaft 2-9 is fitted in the spline groove of the spline housing 2-8 so as to be capable of reciprocating along the spline groove in the axial through hole of the spline housing 2-8, and the round head end of the spline shaft 2-9 abuts against the inner side face of the ram 1-14-4 of the push rod 1-14; the rear end of the drill bit 2-1 is fixed in a blind hole of the spline shaft 2-9, the reset spring 2-7 is sleeved outside the drill bit 2-1, and the rear end of the reset spring is propped against the front end face of the large-diameter spline; the front end of the spline housing 2-8 is fixedly connected with the hole wall of a large-aperture hole on the chuck 2-2 through threads, and the front ends of the reset spring 2-7 and the spline housing 2-8 are propped against the stepped end face of the first circular stepped through hole; the front end of the drill bit 2-1 is exposed to the outer side of the chuck 2-2 through the small aperture of the chuck 2-2; the supporting large bearing 2-10 is sleeved on the outer wall of the middle part of the spline housing 2-8, and plays a role in righting the spline housing 2-8, the bottom end of the supporting large bearing is propped against the front end face of an outer annular boss at the bottom end of the spline housing 2-8, and the top end of the supporting large bearing is propped against the rear end face of a first clamp spring 2-13 which is partially embedded in an annular groove in the middle part of the spline housing 2-8; the cover plate 2-4 is sleeved outside the spline housing 2-8 through a second circular stepped through hole, the front end of the supporting large bearing 2-10 is propped against the stepped end face of the second circular stepped through hole, and the cover plate 2-4 is fixed on the supporting large bearing 2-10 through screws arranged at four vertex angles of the cover plate; the first shifting fork movable groove 1-7-2 is inserted into the first shifting fork movable groove 1-7-2 of the rack gland 1-7, the shifting fork rotating shaft 2-6 is sequentially penetrated and fixed in the rotating shaft hole 2-3-1 and the shifting fork rotating shaft installation blind hole 1-7-3, so that the shifting fork 2-3 is hinged on the rack gland 1-7, and the shifting fork 2-3 swings reciprocally in the first shifting fork movable groove 1-7-2 and the second shifting fork movable groove 1-11-1 which are communicated with each other through the shifting fork rotating shaft 2-6; the single tooth 2-3-2 at the bottom end of the shifting fork 2-3 is meshed with the tooth slot 2-2-1 on the chuck 2-2; the large bevel gear 2-12 is nested and fixed on the outer annular boss at the bottom end of the spline housing 2-8, and the small bevel gear 2-11 is meshed with the large bevel gear 2-12 so as to convert horizontal rotary motion into vertical rotary motion.
The power transmission mechanism 3 is used for transmitting the power of the motor to the drill bit rotating mechanism 2, and reducing the speed through the meshing of gears to enable the drill bit 2-1 to rotate at a proper speed; specifically, referring to fig. 4 and 9, the power transmission mechanism 3 includes a fixed seat 3-1, a seal transmission shaft 3-2, a seal gland 3-3, a rotary seal 3-4, a large gear 3-5, a small gear 3-6, a base 3-7, a first bearing 3-8, a second bearing 3-9, a third bearing 3-10, a transmission shaft 3-11 and a second clamp spring 3-12; wherein,
The fixed seat 3-1 is used as a base of the drill bit pressurizing mechanism 1, the drill bit rotating mechanism 2 and the power transmission mechanism 3, and is specifically composed of a cylindrical table body and a fixed plate vertically fixed at the center of the top surface of the table body; referring to fig. 22 (a), the fixing plate is a 'convex' plate body formed by a small plate body and a large plate body which are connected, wherein supporting holes 3-1-1 are symmetrically formed in two sides of the small plate body, a third circular stepped through hole 3-1-2 is formed in the middle of the large plate body, and a screw hole is formed in each of four vertex angles; the third round stepped through hole is formed by a large-aperture hole close to the outer side surface of the large plate body and a small-aperture hole close to the inner side surface of the large plate body; the fixed seat 3-1 is sleeved outside the supporting large bearing 2-10 through the third circular stepped through hole 3-1-2 and is fixed on the rear end face of the cover plate 2-4 through screws arranged at four vertex angles of the large plate body, and the rear end of the supporting large bearing 2-10 is propped against the stepped end face of the third circular stepped through hole 3-1-2; the small plate body at the top end of the fixed seat 3-1 is inserted into the fixed plate mounting through groove of the back side plate surface of the push rod seat 1-6, and the fixed seat 3-1 is fixed on the push rod seat 1-6 through pins penetrating through two first pin holes 1-6-1 on the push rod seat 1-6 and two supporting holes 3-1-1 on the small plate body; referring to fig. 22 (b), the top surface and the bottom surface of the cylindrical table body are respectively provided with a sealing hole 3-1-3 and a first bearing and a large gear mounting hole 3-1-4 which are coaxially arranged, and are communicated through a small-aperture channel, and the inner diameter of the small-aperture channel is matched with the diameter of a sealing transmission shaft 3-2; the bottom surface of the cylindrical table body is also provided with a pinion mounting hole 3-1-5 communicated with the first bearing and the large gear mounting hole 3-1-4, four threaded holes 3-1-6 uniformly distributed on the bottom surface of the cylindrical table body along the circumferential direction, and bolts for fixing the base 3-7 are arranged in the threaded holes 3-1-6; an external thread connected with the power output mechanism 4 is arranged on the outer wall of the bottom end of the cylinder;
The sealing transmission shaft 3-2 is vertically inserted in a channel for communicating the sealing hole 3-1-3 with the first bearing and the large gear mounting hole 3-1-4; the number of the rotary seals 3-4 is two, the number of the sealing glands 3-3 is two, the rotary seals 3-4 and the two sealing glands 3-3 are matched with the structure of the rotary seals 3-4, the two rotary seals 3-4 and the two sealing glands 3-3 are respectively arranged on the sealing transmission shaft 3-2 in a penetrating manner in a pressing manner in which one sealing gland 3-3 is arranged above one rotary seal 3-4 and are arranged in the sealing holes 3-1-3, and screws sequentially arranged on the two sealing glands 3-3 in a penetrating manner are fixed at the bottoms of the communicating sealing holes 3-1-3; wherein, the rotary seal 3-4 adopts a commercially available sealing element which is used for sealing the rotary seal transmission shaft 3-2 under the high-temperature and high-pressure environment in the pit to prevent the liquid in the pit from entering the motor cylinder 4-1 to damage electric elements; the first bearing 3-8 and the large gear 3-5 are sleeved and fixed on the sealed transmission shaft 3-2 in sequence from bottom to top and are arranged in the first bearing and the large gear mounting hole 3-1-4; the first bearing 3-8 is fixed at the bottoms of the first bearing and the large gear mounting hole 3-1-4, so that the sealed transmission shaft 3-2 drives the large gear mounting hole 3-1-4 to rotate freely; the pinion 3-6 is arranged in the pinion mounting hole 3-1-5 and meshed with the large gear 3-5, so that the rotating speed is reduced; wherein, the large gear 3-5 and the small gear 3-6 are all commercially available straight gears;
Referring to fig. 23 (a) and 23 (b), the base 3-7 is composed of a horizontally disposed disc and a cylindrical drum centrally fixed on the bottom surface of the disc; the center of the disc is provided with a through hole communicated with the cylinder body below, the lower side of the through hole is processed into a cone shape with gradually increased aperture, the through hole is used as a third bearing mounting hole 3-7-1, the hole wall of the lower part of the third bearing mounting hole 3-7-1 is provided with an annular groove which is used as a second jump ring mounting groove 3-7-3; a second bearing mounting hole 3-7-2 is formed in one side of the disc, and the second bearing mounting hole 3-7-2 is a stepped hole with the upper aperture larger than the lower aperture; four through holes which are in one-to-one correspondence with the four threaded holes 3-1-6 at the bottom of the fixed seat 3-1 are uniformly distributed at the edge of the top surface of the base 3-7 along the circumferential direction; the transmission shaft 3-11 vertically penetrates through the third bearing mounting hole 3-7-1, and the top end of the transmission shaft penetrates through and is fixed in the central hole of the pinion 3-6; the bottom of the third bearing 3-10 is sleeved and fixed on the outer side of the transmission shaft 3-11 and is internally fixed in the third bearing mounting hole 3-7-1, and the bottom end of the third bearing 3-10 is limited in the third bearing mounting hole 3-7-1 through a second clamping spring 3-12 arranged in a second clamping spring mounting groove 3-7-3; the second bearing 3-9 is sleeved and fixed on the outer wall of the bottom end of the sealed transmission shaft 3-2, and is internally fixed in the second bearing mounting hole 3-7-2.
The main function of the power output mechanism 4 is to provide power for the bit rotating mechanism 2; specifically, referring to fig. 24, the power output mechanism 4 includes a motor cylinder 4-1, a motor chuck 4-2, a coupling 4-3, a motor 4-4, a motor bracket 4-5, a support spring 4-6, a support base 4-7, a third clamp spring 4-8, a connector 4-9, a battery cylinder 4-10, a first female plug 4-11, a control circuit board 4-12, an electric wire 4-13, a battery 4-14, and a first rubber clamping body 4-15;
Referring to fig. 25 (a) and 25 (b), the motor cylinder 4-1 is a cylindrical cylinder, the inner wall of the top end of the cylindrical cylinder is provided with an internal thread connected with the bottom end of the fixed seat 3-1, the inner wall of the middle part of the cylindrical cylinder is gradually reduced from top to bottom and is provided with a first annular step and a second annular step, and the inner wall of the bottom end of the cylindrical cylinder is provided with an internal thread connected with the top end of the connector 4-9; wherein, a cavity between the first annular step and the second annular step is taken as a motor bin 4-1-1, and two circular arc grooves are correspondingly arranged on the inner wall of the cavity in a symmetrical cutting way; a third jump ring mounting groove 4-1-2 is formed in the inner wall of the cylinder body below the second annular step, and a third jump ring 4-8 is arranged in the third jump ring mounting groove 4-1-2;
referring to fig. 26, the motor chuck 4-2 is composed of a horizontally arranged torus and two clamping wings 4-2-1 symmetrically fixed on the bottom surface of the torus; the two clamping wings 4-2-1 are matched with two symmetrical arc-shaped grooves on the inner wall of the motor bin 4-1-1, so that the two clamping wings are just embedded in the motor bin 4-1-1; four through holes are formed in the annular body along the axial direction;
The motor 4-4 adopts a commercially available high-temperature-resistant motor, and is arranged in the motor bin 4-1-1 in a manner that an output shaft is vertically upwards and penetrates through a central hole of the motor chuck 4-2; the motor 4-4 is embedded between two clamping wings 4-2-1 of the motor chuck 4-2, and four threaded holes are formed in the top surface of the motor 4-4 so as to fix the motor 4-4 on the motor chuck 4-2 through screws arranged in the four through holes on the torus; the coupler 4-3 adopts a commercially available coupler which is used for connecting an output shaft of the motor 4-4 and the transmission shaft 3-11 so as to drive the transmission shaft 3-11 to rotate;
Referring to fig. 27, the motor bracket 4-5 is a cylindrical barrel with an annular boss on the outer wall of the bottom end, and four strip-shaped threading holes 4-5-1 are formed in the side wall of the barrel along the circumferential direction so as to guide the electric wires 4-13 to the inner wall of the motor barrel 4-1; the motor bracket 4-5, the supporting spring 4-6 and the supporting seat 4-7 are arranged below the motor 4-4 from top to bottom; the top end of the motor bracket 4-5 is supported on the bottom surface of the motor 4-4, the bottom end of the motor bracket is press-fit on the top end of the supporting spring 4-6, the bottom end of the supporting spring 4-6 is press-fit on the supporting seat 4-7, and the supporting seat 4-7 is press-fit on the third clamping spring 4-8; the supporting springs 4-6 are commercially available compression springs; the supporting seat 4-7 is a circular ring sheet with a certain thickness;
The connector 4-9 is a cylindrical barrel body with an outer annular boss on the outer wall and an inner annular boss on the inner wall, the top end of the cylindrical barrel body is fixedly connected to the inner wall at the bottom end of the motor barrel 4-1 through threads, and the bottom end of the cylindrical barrel body is connected to the inner wall at the top end of the battery barrel 4-10 through threads; the inner wall of the upper side of the inner annular boss of the connector 4-9 is processed into a conical table capable of fixing the first rubber clamping body 4-15, the first female plug 4-11 is arranged in an upper cavity of the connector 4-9 in a mode that a female port faces upwards, and the bottom end of the first female plug is fixed in a central hole of the first rubber clamping body 4-15 so as to be convenient for connecting the electric wires 4-13; wherein, the first rubber clamping body 4-15 plays a role in insulating the first female plug 4-11 from the inner wall of the metal connector 4-9;
The control circuit board 4-12 is arranged in the lower cavity of the connector 4-9, and is used for stabilizing the current and voltage output by the battery 4-14 and controlling the drilling time; specifically, if the drilling time is set to be 10 minutes through the measurement of an indoor test, after the drilling time is reached, the control circuit board 4-12 automatically cuts off the supply of power to stop the rotation of the drill bit 2-1;
The battery tube 4-10 is a cylindrical tube body, the inner wall of the top end of the battery tube is provided with an internal thread connected with the connector 4-9, and the inner wall of the bottom end of the battery tube is provided with an internal thread connected with the starting mechanism 5; the battery 4-14 is arranged in the battery cylinder 4-10, and epoxy resin is poured into the inner cavity of the battery cylinder 4-10 to play a role in sealing and heat insulation; wherein, the batteries 4-14 are commercial rechargeable lithium batteries, which ensure the electric quantity with at least five holes drilled on the oil pipe;
the starting mechanism 5 is used for starting the power output mechanism 4 to output power after the excitation head is impacted; specifically, referring to fig. 24, the starting mechanism 5 includes an adapter 5-1, an excitation sleeve 5-2, a shear pin 5-3, an excitation head 5-4, a second female plug 5-5, a male pin 5-6, and a second rubber clamping body 5-7; wherein,
Referring to fig. 28, the adapter 5-1 is a cylindrical barrel with an outer annular boss on the outer wall of the middle part and an annular slot on the bottom surface, an external thread connected with the bottom end thread of the battery barrel 4-10 is arranged on the outer wall of the top end, and an external thread connected with the excitation sleeve 5-2 is arranged on the outer wall of the bottom end; the top side of the central hole of the adapter 5-1 is processed into a conical table capable of fixing the second rubber clamping body 5-7, the second female plug 5-5 is arranged in the central hole of the adapter 5-1 in a mode that a female port faces downwards, and the top end of the second female plug is fixed in the central hole of the second rubber clamping body 5-7 so as to be convenient for connecting the electric wires 4-13; wherein the second rubber clamping body 5-7 plays a role in insulating the second female plug 5-5 from the inner wall of the metal adapter 5-1;
The excitation sleeve 5-2 is a cylindrical barrel with an axial through hole in the center, and the bottom end of the cylindrical barrel is processed into a conical end with conical inner and outer walls; the top end of the excitation sleeve 5-2 is in threaded connection with the outer wall of the bottom end of the adapter 5-1; referring to fig. 29, the excitation head 5-4 is a cylindrical body with a blind hole at the center of the top surface, and the bottom end is a conical end; the excitation head 5-4 is sealed and sleeved in the axial through hole of the excitation sleeve 5-2 through a sealing ring arranged on the outer wall, the top end of the excitation head is sealed and inserted in the annular slot of the adapter 5-1 through a sealing ring arranged on the outer wall, and the conical bottom end of the excitation head extends to the outer side from the axial through hole of the excitation sleeve 5-2; the excitation head 5-4 is fixed on the excitation sleeve 5-2 through two copper shear nails 5-3 which are arranged near the conical end of the excitation sleeve 5-2 along the circumferential direction; the male pin 5-6 is arranged in the blind hole of the excitation head 5-4 in a manner that the male end is vertically upwards, and is arranged below the second female plug 5-5 in a manner that the male pin is coaxially arranged with the second female plug 5-5, and the bottom end of the male pin 5-6 is fixed in a slot arranged at the bottom of the blind hole of the excitation head 5-4.
On the specific wiring, the positive electrode of the motor 4-4, the first female plug 4-11 and one wiring connected with the control circuit board 4-12 are electrically connected through an electric wire 4-13 in sequence, and the negative electrode of the battery 4-14 is electrically connected to the inner wall of the motor cylinder 4-1 through the electric wire 4-13; the other end of the control circuit board 4-12 is electrically connected with the anode of the battery 4-14 through an electric wire 4-13; the negative electrode of the battery 4-14 is electrically connected with the second female plug 5-5 through the electric wire 4-13; the male pin 5-6 is connected with the excitation head 5-4, namely equivalent to electrical connection; in a specific working process, the male pin 5-6 and the second female plug 5-5 are break points of the whole circuit loop, and when the male pin 5-6 is inserted into the second female plug 5-5, the circuit is in a passage state; if the male pin 5-6 leaves the second female plug 5-5, the circuit is in an open state.
For further understanding, the following describes the specific installation process of the constituent parts, and the working principle of the mutual cooperation.
The installation process of the drill bit pressurizing mechanism 1 is as follows: firstly, a push rod seat 1-6 is inserted from the top of a fixed seat 3-1, so that a second pin 3-1-1 and a first pin hole 1-6-1 penetrate through a bolt, and then the push rod seat 1-6 is seated on a step at the secondary top end of the fixed seat 3-1 and is fixed with the fixed seat 3-1 into a whole; secondly, the arc surface of the limiting block 1-11 faces outwards and the plane faces inwards, the limiting block is inserted into the limiting block movable through hole 1-7-5, the slow arc surface of the limiting block 1-11 is overlapped with the outer arc surface of the rack gland 1-7, at the moment, the exposed part of the limiting block 1-11 can be seen on the inner side plane of the rack gland 1-7, the first shifting fork movable groove 1-7-2 is not overlapped with the second shifting fork movable groove 1-11-1, a movable groove with larger left side space and gradually reduced right side is formed by crossing, and the width of the movable groove with smaller right side is smaller than the diameter of the cylinder at the top of the shifting fork 2-3; Inserting a limiting block rotating shaft 1-15 into the first limiting block rotating shaft mounting hole 1-7-4 to enable the limiting block 1-11 to be hinged on the rack gland 1-7; inserting the top cylindrical end of the shifting fork 2-3 towards the upper left direction, inserting the lower surface of the rack gland 1-7 into the first shifting fork movable groove 1-7-2, obliquely inserting the lower surface of the first shifting fork movable groove into a larger left space to the upper left until the rotating shaft hole 2-3-1 of the shifting fork 2-3 is aligned with the shifting fork rotating shaft mounting hole 1-7-3, screwing the shifting fork rotating shaft 2-6, and hinging the shifting fork 2-3 on the rack gland 1-7; at this time, the single tooth 2-3-2 of the fork 2-3 is biased to the right. Aligning the inner side plane end of the assembled rack gland 1-7 with the front surface of the push rod seat 1-6, aligning the through hole with the threaded hole, screwing in a bolt, and fixing the rack gland 1-7 on the front surface of the push rod seat 1-6; And thirdly, inserting the rack part of the rack frame 1-8 towards the right side into a space formed by the rack gland 1-7 and the push rod seat 1-6 until the lower surface of the rack frame 1-8 abuts against the upper surface of the limiting block 1-11. The back of the rack frame 1-8 is penetrated with a driving wheel 1-9 and a push wheel 1-5 which are welded into a whole, so that the driving wheel 1-9 is meshed with rack teeth of the rack frame 1-8. The upper surface of the rack frame 1-8 is sleeved into the rack frame placing groove 1-4-2 of the push wheel shaft seat 1-4, and the through hole on the push wheel shaft seat 1-4 is aligned with the threaded hole on the back surface of the push wheel seat 1-6, and the bolt is screwed in, so that the push wheel shaft seat 1-4 is fixedly arranged on the push wheel seat 1-6. A push wheel round shaft 1-12 is installed in a push wheel round shaft hole 1-14-2 of a push rod 1-14, a support column 1-13 is installed in a support threaded hole 1-14-3, then a press head 1-14-4 of the installed push rod 1-14 faces downwards, a first rotating shaft hole 1-14-1 is aligned with a round ring hole of a push rod rotating shaft support frame 1-6-4, and bolts are penetrated to enable the push rod 1-14 to be hinged on the back surface of a push rod seat 1-6. At this time, the push wheel 1-5 is rotated, so that the circular arc head end of the round shaft 1-12 of the push wheel is abutted against the large connecting plane 1-5-4 of the push wheel 1-5 and is close to the rising surface 1-5-1. And finally, screwing the lower end of the support rod 1-1 on the top surface of the push wheel shaft seat 1-4 through threads, and sleeving the large plane of the pressing cap 1-17 into the support rod 1-1 downwards so that the lower surface of the large plane of the pressing cap 1-17 is propped against the upper surface of the rack frame 1-8. the support rod 1-1 is sleeved with the large pressure spring 1-3, the top end of the support rod is screwed with the upper pressure cap 1-2, and the large pressure spring 1-3 is compressed by screwing the upper pressure cap 1-2 so as to store force.
The mounting process of the bit rotation mechanism 2 is as follows: inserting the tail end of the drill bit 2-1 into a blind hole of the spline shaft 2-9 and welding the tail end into a whole; the drill bits 2-1 with different diameters and the matched spline shaft 2-9 form a part; the drill bit 2-1 is aligned with the large diameter end of the spline housing 2-8, and the assembled component is inserted into the spline housing 2-8. Secondly, the drill bit 2-1 is aligned with the supporting hole 3-1-2, and the assembled parts are inserted from the small diameter end of the supporting hole 3-1-2 of the fixing seat 3-1. The small diameter ends of the drill bit 2-1 and the spline housing 2-8 are sleeved with the large bearing 2-10, and the large bearing 2-10 is pushed into the large diameter of the supporting hole 3-1-2 of the fixed seat 3-1 until the inner surface of the large bearing 2-10 contacts with the step surface at the transition part of the large diameter and the small diameter of the supporting hole 3-1-2. At this time, the inner surface of the large bearing 2-10 also props against the step surface of the large-diameter and small-diameter joint of the spline housing 2-8; the drill bit 2-1 and the small diameter end of the spline housing 2-8 are sleeved into the first clamp spring 2-13 and pushed inwards into the groove of the spline housing 2-8 to prop against the outer surface of the large bearing 2-10. Similarly, the small diameter end of the drill bit 2-1 and the spline housing 2-8 are sleeved into the cover plate 2-4, the step surface at the joint of the large bearing 2-10 and the small diameter is pushed inwards until the step surface is propped against the large bearing 2-10, the four through holes of the step surface are aligned with the threaded holes on the side surface of the fixed seat 3-1, bolts are screwed in, the cover plate 2-4 is pressed, and the large bearing 2-10 is supported. Finally, one end of the drill bit 2-1 is sleeved with a reset spring 2-7 and pushed into the spline housing 2-8. The chuck 2-2 is screwed at the external thread end of the spline housing 2-8, so that the external plane of the chuck 2-2 is flush with the external plane of the shifting fork 2-3, and the tooth slot 2-2-1 is meshed with the single tooth 2-3-2. And a large bevel gear 2-12 is arranged at the large diameter end of the spline housing 2-8, so that the large bevel gear 2-12 and the spline housing 2-8 are integrated, and a small bevel gear 2-11 is arranged at the top end of the sealed transmission shaft 3-2, so that the small bevel gear 2-11 and the sealed transmission shaft 3-2 are integrated. The large bevel gear 2-12 is meshed with the small bevel gear 2-11, and the pressure head 1-14-4 of the push rod 1-14 is propped against the round head end of the spline shaft 2-9.
The working principle of the drill bit pressurizing mechanism 1 and the drill bit rotating mechanism 2 is as follows: in the initial state, the pressure head 1-14-4 of the push rod 1-14 only abuts against the round head end of the spline shaft 2-9, but does not exert enough pushing force yet. The tooth slot 2-2-1 of the chuck 2-2 is not engaged with the single tooth 2-3-2 of the fork 2-3, and the single tooth 2-3-2 is biased to the right of the tool. The motor 4-4 transmits the rotary motion to the seal transmission shaft 3-2 through the power transmission mechanism 3 and drives the bevel pinion 2-11 to rotate. The small bevel gears 2-11 are meshed with the large bevel gears 2-12 to convert horizontal rotary motion into vertical rotary motion. Because the big bevel gear 2-12 and the spline housing 2-8 are integrated, the rotating big bevel gear 2-12 drives the spline housing 2-8 to synchronously rotate. The spline housing 2-8 is in spline fit with the spline shaft 2-9, so that the spline shaft 2-9 and the drill bit 2-1 synchronously rotate, and simultaneously, the chuck 2-2 connected to the threaded end of the spline housing 2-8 is driven to rotate. The spline housing 2-8, the spline shaft 2-9, the drill bit 2-1 and the chuck 2-2 are all rotated counterclockwise when looking at the outer surface of the chuck 2-2. When the counterclockwise rotating chuck 2-2 rotates less than one turn, the tooth slot 2-2-1 is brought into contact with and engaged with the single tooth 2-3-2. Continuing to rotate anticlockwise, the chuck 2-2 toggles the shifting fork 2-3 to rotate anticlockwise around the shifting fork rotating shaft 2-6 by an angle. Thereafter, the single tooth 2-3-2 is disengaged from the tooth slot 2-2-1 and does not reengage during the subsequent rotation. As described above, the movable groove I1-7-2 of the shifting fork and the movable groove 1-11-1 of the second shifting fork are crossed to form a movable groove with larger left space and gradually reduced right space, the width of the smaller movable groove on the right side is smaller than the diameter of the cylinder at the top of the shifting fork 2-3, and when the shifting fork 2-3 is not rotated, the cylinder end of the shifting fork is inserted into the larger left space. In the process of anticlockwise rotation of the shifting fork 2-3 around the shifting fork rotating shaft 2-6, the cylindrical end of the shifting fork 2-3 is along a movable groove formed by crossing the first shifting fork movable groove 1-7-2 and the second shifting fork movable groove 1-11-1, and the left larger space rotates to the right side, so that the right side width is forced to be increased to accommodate the cylindrical end of the shifting fork 2-3. this forces the stopper 1-11 to rotate around the stopper rotation shaft 1-15 in the stopper movable through hole 1-7-5 to the outside of the tool. The upper surface of the stopper 1-11 cannot support the lower surface of the rack frame 1-8 because it rotates to the outside of the tool. After the lower end of the rack frame 1-8 loses the limiting constraint of the limiting block 1-11, the large pressure spring 1-3 is applied to the downward pressing cap 1-17 to be transmitted to the upper surface of the rack frame 1-8, so that the large pressure spring slides downwards along a movable space formed by the rack gland 1-7 and the front surface of the push rod seat 1-6. The rack frame 1-8 descends to drive the driving wheel 1-9 meshed with the rack frame to rotate clockwise around the supporting shaft 1-10, and then drives the push wheel 1-5 which is integrated to rotate clockwise. At this time, the arc head end of the round shaft 1-12 of the push wheel is propped against the large connecting plane 1-5-4 of the push wheel 1-5 and is close to the rising plane 1-5-1. As the push wheel 1-5 rotates clockwise, the rising surface 1-5-1 gradually contacts the circular arc head end of the push wheel circular shaft 1-12 and pushes the push wheel circular shaft 1-12 outwards, so that the push rod 1-14 rotates around the push rod rotating shaft 1-16, and the upper end part of the push rod extends out of the tool. At the same time, the supporting columns 1-13 on the pushing rods 1-14 are supported on the inner wall of the oil pipe on the side to be drilled in the direction so as to provide a supporting force for the whole drilling tool. In the process that the upper end part of the push rod 1-14 extends outwards, based on the principle of leverage, the pressure head 1-14-4 at the lower end part starts to inwards squeeze the round head end of the spline shaft 2-9, so that enough thrust is constructed on the drill bit 2-1. The drill bit 2-1 rotates to bite into the inner wall of the oil pipe under the action of the pushing force, and drilling is started. As the bit 2-1 bites, the return spring 2-7 is compressed to begin storing force. The ascending distance of the ascending surface 1-5-1 of the push wheel 1-5 is designed according to the wall thickness of the oil pipe, after the oil pipe wall is drilled through to form a pore canal, the circular arc head end of the round shaft 1-12 of the push wheel just reaches the position of the connecting facet 1-5-2 of the push wheel 1-5, the same thrust force is kept continuously, the drill bit 2-1 is rotated and reamed in situ, and 100% of pore canal formation is ensured. In the process, the restoring spring 2-7 stores the force to the maximum value, when the push wheel 1-5 continues to rotate to enable the circular arc head end of the push wheel circular shaft 1-12 to prop against the descending surface 1-5-3, the thrust force applied by the pressure head 1-14-4 to the circular head end of the spline shaft 2-9 is gradually reduced until the circular arc head end of the push wheel circular shaft 1-12 props against the connecting large plane 1-5-4, and the pressure head 1-14-4 returns to the initial state; The rack frame 1-8 descends to a limit position, that is, the lower surface of the rack frame abuts against the upper surface of the cover plate 2-4, and the downward motion cannot be continued. The energy of the big compression springs 1-3 is basically released. In the process, the reset spring 2-7 starts to release elastic potential energy, the spline shaft 2-9 is pushed to drive the drill bit 2-1 to retract outwards, the drill bit 2-1 is separated from the drilled hole, and the drilling operation is completed.
(IV) the power transmission mechanism 3 is installed in the following process: firstly, a sealing transmission shaft 3-2 is inserted into a stepped through hole of a cylinder at the bottom of a fixed seat 3-1, a rotary seal 3-4, a lower sealing gland, a rotary seal 3-4 and an upper sealing gland are sleeved on the top end of the sealing transmission shaft 3-2 in sequence, the sealing transmission shaft is pushed into the sealing hole 3-1-3, the through hole of the upper sealing gland is aligned with threaded holes at two sides of the stepped through hole at the upper surface of the cylinder at the bottom of the fixed seat 3-1, and bolts are screwed, so that the sealing gland 3-3 is fixed on the cylinder at the bottom of the fixed seat 3-1. The small bevel gear 2-11 is arranged at the top end of the sealed transmission shaft 3-2, and the height of the sealed transmission shaft 3-2 is adjusted, so that the small bevel gear 2-11 is well meshed with the large bevel gear 2-12. The bottom of the sealed transmission shaft 3-2 is sleeved with a first bearing 3-8, a large gear 3-5 and a second bearing 3-9 in sequence, and the first bearing 3-8 is pushed to enter the bottom surface of the first bearing and large gear mounting hole 3-1-4. Thirdly, penetrating a transmission shaft 3-11 into a central through hole of the base 3-7, installing a pinion 3-6 at the top of the transmission shaft 3-11, sleeving a third bearing 3-10 at the bottom, and pushing the third bearing 3-10 into the third bearing installation hole 3-7-1. And a second clamping spring 3-12 is arranged in the second clamping spring mounting groove 3-7-3 to support the third bearing 3-10. Finally, the large-diameter end face of the installed base 3-7 faces upwards and is matched with the bottom of the fixed seat 3-1, so that the pinion 3-6 enters the pinion installation hole 3-1-5, and the second bearing 3-9 enters the second bearing installation hole 3-7-2. Four through holes uniformly distributed on the upper end surface of the base 3-7 are aligned with threaded holes 3-1-6 at the bottom of the fixed seat 3-1, and are screwed into bolts for fixation.
The power transmission mechanism 3 operates according to the following principle: after the motor 4-4 drives the transmission shaft 3-11 to rotate, the transmission shaft 3-11 drives the pinion 3-6 to synchronously rotate. The pinion 3-6 is meshed with the large gear 3-5, and after the rotation speed is reduced, the sealing transmission shaft 3-2 is driven to rotate, so that the bevel pinion 2-11 is driven to synchronously rotate. In the rotation process, the positive and negative poles of the motor 4-4 need to be adjusted to ensure that the spline housing 2-8, the spline shaft 2-9, the drill bit 2-1 and the chuck 2-2 are all rotated anticlockwise when rotation is transmitted to the drill bit rotation mechanism 2. The rotary seal 3-4 can ensure the tightness of the seal transmission shaft 3-2 in the rotary motion process and reduce the rotary resistance caused by the existence of the seal.
The mounting process of the power output mechanism 4 and the starting mechanism 5 is as follows: the four through holes on the disc of the motor chuck 4-2 are aligned with the four threaded holes on the end face of the output shaft of the motor 4-4, so that the two clamping wings 4-2-1 clamp the body of the motor 4-4, and the bolts are screwed, so that the motor chuck 4-2 and the motor 4-4 are fixed into a whole. The output shaft of the motor 4-4 faces upwards and is arranged in the motor cylinder 4-1, so that the two clamping wings 4-2-1 of the motor chuck 4-2 are arranged in the arc-shaped groove on the wall surface of the motor bin 4-1-1 to fix the motor 4-4, counter torque generated in the rotation process of the motor 4-4 is counteracted, and stable output torque of the motor 4-4 is ensured. Secondly, a motor bracket 4-5, a supporting spring 4-6, a supporting seat 4-7 and a third clamping spring 4-8 are sequentially arranged at the lower end part of the motor cylinder 4-1, and the third clamping spring 4-8 is placed in the third clamping spring mounting groove 4-1-2 and used for supporting the motor 4-4. The support springs 4-6 enable slight up-and-down vibration to occur, preventing impact on the output shaft. And thirdly, inserting the electric wire 4-13 at the input end of the motor 4-4 into the second female plug 4-11, and soldering the electric wire 4-13 at the output end of the motor 4-4 through the threading hole 4-5-1 and guiding the electric wire to the inner wall of the motor cylinder 4-1, wherein the soldering is equivalent to connecting the negative electrode of the motor 4-4 to the metal body of the tool. Finally, the first female plug 4-11 is clamped and placed in the upper hole of the connector 4-9 through the first rubber clamping body 4-15, and the connector 4-9 is screwed on the lower end of the motor cylinder 4-1. The other end of the female plug I4-11 is connected with the control circuit board 4-12 through the electric wire 4-13, and is further connected to the positive electrode of the battery 4-14 through the electric wire 4-13. The battery cylinder 4-10 is filled with epoxy resin material and then screwed at the lower end of the connector 4-9. Then, the second female plug 5-5 is clamped and placed by the second rubber clamping body 5-7 in the lower hole of the central stepped through hole of the adapter 5-1, and the second female plug 5-5 is connected with the positive electrode of the battery 4-14. Thereafter, the adapter 5-1 is screwed to the bottom of the battery can 4-10. Secondly, a male pin 5-6 is arranged at the bottom of the central blind hole of the excitation head 5-4, then the excitation head 5-4 is sleeved on the external extension cylinder of the adapter 5-1, and the male pin 5-6 and the second female pin 5-5 are kept at a certain distance. Finally, the bottom of the excitation head 5-4 is sleeved with an excitation sleeve 5-2, and through holes on the outer wall of the excitation sleeve are aligned with blind holes on the outer body of the excitation head 5-4 so as to load the shear nails 5-3.
The power output mechanism 4 and the starting mechanism 5 operate according to the following principles: when the drilling tool is put into the well by the oil pipe at the well mouth, the drilling tool can fall into the well under the action of gravity. When the tool reaches the place where the bottom of the oil pipe is blocked, the excitation head 5-4 at the bottom can move inwards under the action of inertia, so that the shearing nail 5-3 is sheared, the male pin 5-6 is inserted into the second female plug 5-5, and the whole circuit is communicated. The battery 4-14 outputs a stable current to the motor 4-4 through the control circuit board 4-12, so that the motor 4-4 starts to rotate and work, and outputs torque. The supporting springs 4-6 can allow the motor 4-4 to vibrate slightly up and down in the working process, the motor chuck 4-2 can offset reactive torque generated in the rotating process of the motor 4-4, and stable output torque of the motor 4-4 is ensured. The output rotary motion is transmitted to the transmission shaft 3-11 through the coupling 4-3, and is transmitted to the drill bit rotary mechanism 2 through the power transmission mechanism 3, so that the drill bit 2-1 rotates to suck the oil pipe forwards, and the drilling operation is started. After the drilling action is completed, the drill bit 2-1 is retracted under the action of the return spring 2-7, and at this time, the drill bit 2-1 is still in a rotating state. Under the action of the control circuit boards 4-12, the circuit is automatically cut off after 10min (more than the actual time required by drilling) to complete the whole drilling process. After drilling is completed, the tool can be taken to a wellhead along with the lifting of the oil pipe, and is recycled.
Claims (7)
1. The utility model provides a put-in type electric oil pipe inner wall drilling tool which is characterized by comprising a drill bit pressurizing mechanism (1), a drill bit rotating mechanism (2), a power transmission mechanism (3), a power output mechanism (4) and a starting mechanism (5) which are connected in sequence; the drill bit pressurizing mechanism (1) comprises a supporting rod (1-1), an upper pressing cap (1-2), a large pressure spring (1-3), a pushing wheel shaft seat (1-4), a pushing wheel (1-5), a pushing rod seat (1-6), a rack gland (1-7), a rack frame (1-8), a driving wheel (1-9), a supporting shaft (1-10), a limiting block (1-11), a pushing wheel round shaft (1-12), a pushing rod (1-14), a limiting block rotating shaft (1-15), a pushing rod rotating shaft (1-16) and a pressing cap (1-17), a drill bit rotating mechanism (2) comprising a drill bit (2-1), a chuck (2-2), a shifting fork (2-3), a cover plate (2-4), a shifting fork rotating shaft (2-6), a reset spring (2-7), a spline sleeve (2-8), a spline shaft (2-9), a large bearing (2-10), a small bevel gear (2-11), a large bevel gear (2-12) and a first clamp spring (2-13),
The large pressure spring (1-3) is sleeved outside the supporting rod (1-1) in a compressed state, and two ends of the large pressure spring are respectively propped against an upper pressure cap (1-2) and a lower pressure cap (1-17) which are fixed on two end sides of the supporting rod (1-1); the pushing wheel axle seat (1-4) is composed of a horizontal top plate, an arc-shaped vertical plate and a horizontal bottom plate which are sequentially connected; the supporting rod (1-1) is vertically fixed at the center of the top surface of the push wheel shaft seat (1-4); the pushing wheel (1-5) is composed of a central tube which is horizontally arranged and a ring body which is sleeved outside the central tube, the ring body is arranged in a way that the front surface faces an arc-shaped vertical plate, and the front surface is processed into a lifting surface (1-5-1), a small connecting plane (1-5-2), a descending surface (1-5-3) and a large connecting plane (1-5-4) which are connected in sequence; the rack frame (1-8) is a rectangular frame which is vertically arranged and provided with racks on the vertical edge of one side in the frame, the top end of the rack frame is penetrated in a strip-shaped hole formed in the horizontal top plate and is propped against the pressing cap (1-17), and the bottom end of the rack frame is inserted in a guide limit groove formed by surrounding the push rod seat (1-6) and the rack gland (1-7); the driving wheel (1-9) is fixed on the back of the push wheel (1-5) and meshed with an internal tooth bar of the rack frame (1-8), the driving wheel (1-9) and the push wheel (1-5) are rotatably arranged on a transmission shaft (1-10) which is horizontally arranged and the shaft end of which is fixed on an arc-shaped vertical plate in a penetrating way; the limiting block (1-11) is a plate body with an outer cambered surface and an inner plane, and the outer cambered surface gradually changes from slow length to steep length;
The outer side surface of the push rod seat (1-6) is fixed on the end side of the horizontal bottom plate of the push wheel shaft seat (1-4), and an L-shaped through groove penetrating to the horizontal bottom plate is formed in the middle of the lower side of the arc-shaped vertical plate of the self-push wheel shaft seat (1-4); the push rod (1-14) is a vertically arranged strip rod body, the top end of the rod body is inserted in the L-shaped through groove, and the middle part of the rod body is hinged on the push rod seat (1-6) through a ring body penetrating through the inner side surface of the push rod (1-14) and push rod rotating shafts (1-16) arranged in two push rod rotating shaft supporting frames (1-6-4) on the outer side surface of the push rod seat (1-6); the round shaft (1-12) of the push wheel is a cylinder with a hemispherical end at one end and an external thread at the other end, and is fixed on the inner side surface of the self-push rod (1-14) in a way that the hemispherical end faces the front surface of the push wheel (1-5), so that the round shaft can push the push rod (1-14) to swing inwards and outwards around the push rod rotating shaft (1-16) by utilizing the spatial change of the ascending surface (1-5-1) and the descending surface (1-5-3) of the front surface of the push wheel (1-5) in the rotating process;
The limiting block (1-11) is horizontally inserted into a through hole formed in the top side of the rack gland (1-7), and the slow long end of the limiting block is hinged in the through hole through a limiting block rotating shaft (1-15) vertically fixed on the rack gland (1-7) and can perform small-angle rotating motion; the limiting block (1-11) is provided with a bar-shaped through hole which can be communicated with an axial through hole which is axially formed in the rack gland (1-7), so that a shifting fork (2-3) with a bar-shaped structure is arranged in the bar-shaped through hole in the limiting block (1-11) and the rack gland (1-7) in a penetrating manner and is hinged on the rack gland (1-7) through a shifting fork rotating shaft (2-6) which is horizontally arranged in the central holes of the rack gland (1-7) and the shifting fork (2-3) in a penetrating manner so as to swing back and forth in the bar-shaped through hole; the bottom end of the shifting fork (2-3) is provided with a single tooth (2-3-2);
The chuck (2-2) is provided with a stepped through hole at the center, and a circular plate with a tooth slot (2-2-1) which can be meshed with the single tooth (2-3-2) is processed on the outer edge; the front end of the spline housing (2-8) is fixed in a stepped through hole of the chuck (2-2); the spline shaft (2-9) is a shaft body with a large-diameter spline at one end and a round head end at the other end, the large-diameter spline is sleeved in a spline housing (2-8) with a spline groove inside, and the round head end of the spline shaft is propped against the inner side surface of the bottom end of the push rod (1-14); the rear end of the drill bit (2-1) is fixed at the front end of the spline shaft (2-9), and the front end is exposed to the outer side of the chuck (2-2) through a stepped through hole of the chuck (2-2); the reset spring (2-7) is sleeved outside the drill bit (2-1), and two ends of the reset spring respectively prop against the stepped end face of the stepped through hole of the chuck (2-2) and the front end of the large-diameter spline; the large supporting bearing (2-10) is sleeved outside the spline housing (2-8), is fixed on the push rod seat ((1-6) through a connecting piece fixed on the outer wall, and two ends of the large supporting bearing respectively abut against a first clamping spring (2-13) embedded on the outer wall of the spline housing (2-8) and an outer annular boss at the bottom end of the spline housing (2-8);
The large bevel gear (2-12) is sleeved and fixed on an outer annular boss at the bottom end of the spline housing (2-8), and the small bevel gear (2-11) is sleeved and fixed on a transmission shaft which is arranged on the power transmission mechanism (3) in a vertical manner and meshed with the large bevel gear (2-12); a speed reducing mechanism is arranged in the power transmission mechanism (3) so as to transmit motor power in the power output mechanism (4) to the drill bit rotating mechanism (2) at a proper rotating speed; the starting mechanism (5) is an excitation mechanism which is internally provided with a motor for driving the power output mechanism (4) to start so as to drive the motor of the power transmission mechanism (3) to work.
2. The thrown-in electric oil pipe inner wall drilling tool according to claim 1, wherein the power transmission mechanism (3) comprises a fixed seat (3-1), a sealed transmission shaft (3-2), a large gear (3-5), a small gear (3-6), a base (3-7), a first bearing (3-8), a second bearing (3-9), a third bearing (3-10), a transmission shaft (3-11) and a second clamp spring (3-12); wherein, the fixed seat (3-1) is composed of a cylindrical table body and a fixed plate vertically fixed at the center of the top surface of the table body; the upper part of the fixed plate is fixed on the outer side of a push rod seat ((1-6) and the lower part of the fixed plate is sleeved and fixed on the outer side of a supporting large bearing (2-10) through a through hole formed in the upper part, a sealing transmission shaft (3-2) is vertically inserted in a through hole formed in a cylindrical table, a first bearing and large gear mounting hole (3-1-4) communicated with the through hole for inserting the sealing transmission shaft (3-2) and a small gear mounting hole (3-1-5) communicated with the first bearing and large gear mounting hole (3-1-4) are formed in the bottom surface of the cylindrical table body, the first bearing (3-8) and the large gear (3-5) are sequentially sleeved and fixed on the sealing transmission shaft (3-2) from bottom to top and are arranged in the first bearing and large gear mounting hole (3-1-4) so that the sealing transmission shaft (3-2) drives the large gear mounting hole (3-1-4) to freely rotate, the small gear (3-6) is arranged in the small gear mounting hole (3-1-5) and is meshed with the large gear mounting hole (3-5) on the bottom surface of the cylindrical table (3-7) through the vertical transmission shaft (3-7) and the center base (3-10), the top end of the small gear is penetrated and fixed in a central hole of the small gear (3-6); the bottom end of the third bearing (3-10) is limited by a second clamp spring (3-12) arranged on the wall of the central through hole; the bottom end of the transmission shaft (3-11) is rotatably fixed in a blind hole formed on the top surface of the base (3-7) through a second bearing (3-9).
3. The thrown-in electric oil pipe inner wall drilling tool according to claim 2, wherein the power output mechanism (4) comprises a motor cylinder (4-1), a motor chuck (4-2), a coupling (4-3), a motor (4-4), a connector (4-9), a battery cylinder (4-10), a first female plug (4-11), a control circuit board (4-12), an electric wire (4-13), a battery (4-14) and a first rubber clamping body (4-15); the starting mechanism (5) comprises an adapter (5-1), an excitation sleeve (5-2), a shear pin (5-3), an excitation head (5-4), a second female plug (5-5), a male pin (5-6) and a second rubber clamping body (5-7); wherein, the motor cylinder (4-1), the connector (4-9), the battery cylinder (4-10), the adapter (5-1) and the excitation sleeve (5-2) are sequentially connected from top to bottom; the motor (4-4) is fixed in the motor cylinder (4-1) through the motor chuck (4-2) in a mode that the output shaft of the motor is vertically upwards, and the output shaft of the motor is connected with the transmission shaft (3-11) through the coupler (4-3); the first female plug (4-11) is fixed in an upper cavity of the connector (4-9) through a first rubber clamping body (4-15) in a female port-up mode, the control circuit board (4-12) is fixed in a lower cavity of the connector (4-9), the battery (4-14) is arranged in the battery cylinder (4-10) in a built-in mode, epoxy resin is poured into an inner cavity of the battery cylinder (4-10), the second female plug (5-5) is fixed in a central hole of the adapter (5-1) through a second rubber clamping body (5-7) in a female port-down mode, the excitation head (5-4) is a cylindrical body with a blind hole at the center of the top surface, the cylindrical body is sealed and mounted in the excitation sleeve (5-2), the top end of the cylindrical body is sealed and inserted in an annular slot formed in the bottom surface of the rotation connector (5-1) around the central hole, the bottom end of the cylindrical body is an axial through hole of the excitation sleeve (5-2), the male pin (5-6) is arranged in a mode that the male pin vertically faces upwards in the central hole of the excitation sleeve (5-4), the cylindrical body is arranged on the central hole of the excitation sleeve (5-4), and the excitation head (4) is arranged on the front end of the excitation sleeve (5-2) through the cylindrical body and the excitation sleeve (4) is fixed on the front end of the excitation sleeve (4) in a pair of the excitation sleeve (5-2) in a pair One wiring of the first female plug (4-11) and the connection control circuit board (4-12) is electrically connected through an electric wire (4-13) in sequence, and the negative electrode of the battery (4-14) is electrically connected to the inner wall of the motor cylinder (4-1) through the electric wire (4-13); the other end of the control circuit board (4-12) is electrically connected with the anode of the battery (4-14) through an electric wire (4-13); the negative electrode of the battery (4-14) is electrically connected with the second female plug (5-5) through the electric wire (4-13).
4. The thrown-in electric oil pipe inner wall drilling tool according to claim 1, characterized in that the drill bit pressurizing mechanism (1) further comprises support columns (1-13); the support column (1-13) is a cylinder with one end provided with a conical end head, the middle part provided with an annular flange and the other end provided with external threads, the threaded end of the cylinder penetrates through the outer side surface of the push rod (1-14) and is fixed in a support threaded hole (1-14-3) arranged below the round shaft of the push wheel (1-12), and the annular flange in the middle part of the support column (1-13) is propped against the outer side surface of the push rod (1-14).
5. The thrown-in electric oil pipe inner wall drilling tool according to claim 2, characterized in that the drill bit rotating mechanism (2) further comprises a sheath (2-5), the sheath (2-5) is a semicircular annular guard plate which is vertically arranged, is arranged outside the push rod (1-14) at the side opposite to the drill bit (2-1), and is fixed on the top surface of the fixed seat (3-1).
6. The thrown-in electric oil pipe inner wall drilling tool according to claim 2, characterized in that the power transmission mechanism (3) further comprises two sealing glands (3-3) and two rotary seals (3-4), and the sealing glands (3-3) are adapted to the structure of the rotary seals (3-4); a sealing hole (3-1-3) communicated with the through hole of the plug-in sealing transmission shaft (3-2) is formed on the top surface of the cylindrical table body; the two rotary seals (3-4) and the two seal glands (3-3) are respectively arranged on the seal transmission shaft (3-2) in a penetrating manner in a manner that one seal gland (3-3) is pressed above one rotary seal (3-4) and are arranged in the seal hole (3-1-3), and screws which are sequentially arranged on the two seal glands (3-3) in a penetrating manner are fixed at the bottoms of the communicated seal holes (3-1-3).
7. The thrown-in type electric oil pipe inner wall drilling tool according to claim 2, wherein the power output mechanism (4) further comprises a motor bracket (4-5), a supporting spring (4-6), a supporting seat (4-7) and a third clamping spring (4-8); the motor bracket (4-5), the supporting spring (4-6) and the supporting seat (4-7) are arranged in the motor cylinder (4-1) from top to bottom through a third clamping spring (4-8) arranged on the inner wall of the motor cylinder (4-1), so that the top end of the motor bracket (4-5) is supported on the bottom surface of the motor (4-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706429.3A CN118273657A (en) | 2022-12-29 | 2022-12-29 | Put in formula electric oil pipe inner wall drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706429.3A CN118273657A (en) | 2022-12-29 | 2022-12-29 | Put in formula electric oil pipe inner wall drilling tool |
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| Publication Number | Publication Date |
|---|---|
| CN118273657A true CN118273657A (en) | 2024-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211706429.3A Pending CN118273657A (en) | 2022-12-29 | 2022-12-29 | Put in formula electric oil pipe inner wall drilling tool |
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| Country | Link |
|---|---|
| CN (1) | CN118273657A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118911590A (en) * | 2024-10-12 | 2024-11-08 | 内蒙古科技大学 | Roadway drilling mechanism and roadway support |
-
2022
- 2022-12-29 CN CN202211706429.3A patent/CN118273657A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118911590A (en) * | 2024-10-12 | 2024-11-08 | 内蒙古科技大学 | Roadway drilling mechanism and roadway support |
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