CN115467902B - Quick-change type bidirectional transmission device and method for underground coal mine middle loading and unloading rod drilling machine - Google Patents
Quick-change type bidirectional transmission device and method for underground coal mine middle loading and unloading rod drilling machine Download PDFInfo
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- CN115467902B CN115467902B CN202211174632.0A CN202211174632A CN115467902B CN 115467902 B CN115467902 B CN 115467902B CN 202211174632 A CN202211174632 A CN 202211174632A CN 115467902 B CN115467902 B CN 115467902B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 138
- 238000005553 drilling Methods 0.000 title claims abstract description 55
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 41
- 239000003245 coal Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 12
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010572 single replacement reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
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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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (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)
- Earth Drilling (AREA)
Abstract
The invention provides a quick-change type bidirectional transmission device for a coal mine underground middle loading and unloading rod drilling machine, which comprises a power shaft and a transmission shaft which are sequentially connected, wherein a limiter is sleeved outside the power shaft and the transmission shaft, and a locker is sleeved outside the limiter. A positioning cabin is radially arranged on the side wall of the rear part of the limiting pipe, and a first eyelet communicated with the inside of the limiting pipe is formed at the radial bottom of each positioning cabin; a positioning pin capable of radially moving is arranged in the positioning cabin, and a return spring is sleeved on the positioning pin. Axial movement of the lock drives radial movement of the locating pin. The outer surface of the power shaft body is provided with an annular positioning groove, and when the annular positioning groove is aligned with the first eyelet, the positioning pin can enter the annular positioning groove under the extrusion of the locking pipe, so that the positioning and locking of the power shaft and the limiter are realized. The invention improves the service life of the transmission device, the disassembly and replacement efficiency and the comprehensive use cost while realizing the bidirectional power transmission of the transmission device of the underground middle loading and unloading rod drilling machine of the coal mine.
Description
Technical Field
The invention belongs to the technical field of underground tunnel drilling of coal mines, relates to a transmission device for a drilling machine, and particularly relates to a quick-change bidirectional transmission device for a middle underground coal mine rod loading and unloading drilling machine and a use method.
Background
Drilling is an effective technical means for underground mine geological investigation and disaster prevention. The drilling machine is core equipment for drilling construction, and long-distance drilling construction is realized by continuously installing and detaching a drill rod. According to the different modes of the drill rod loading and unloading, the mode of loading and unloading the rod at the rear part and the mode of loading and unloading the rod at the middle are mainly adopted at present.
The rear loading and unloading rod refers to loading and unloading a drill rod from the rear part of the power head of the drilling machine, the water feeder is required to be detached firstly, then the drill rod is connected/detached, and then the water feeder is connected, and although a special transmission device is not required, the loading and unloading rod has long flow and consumes much time and is mainly used for a conventional drilling machine.
The middle loading and unloading rod is used for loading and unloading the drill rod from the middle of the drill power head and the clamp holder, a special transmission device is adopted, and when the drill rod is loaded and unloaded each time, only the threads between the transmission device and the drill rod are needed to be disassembled and connected, so that the loading and unloading rod is easy to operate and high in speed, and is mainly used for an automatic drill and an intelligent drill, and the automatic loading and unloading of the drill rod by the drill is realized. At present, all the transmission devices adopt an integrated structure, and the following defects exist in practical application:
(A) The service life is short. When drilling is performed, the screw thread between the transmission device and the drill rod needs to be frequently detached and connected, so that the connecting screw thread between the transmission device and the drill rod is easy to wear and lose efficacy, and the service life is short.
(B) The disassembly and replacement efficiency is low. When the transmission device is damaged and replaced, the whole transmission device needs to be detached from the power head of the drilling machine, and then a new transmission device is replaced and connected. The transmission device and the power head of the drilling machine are generally connected in a flange mode, the requirement of large torque transmission of the drilling machine is considered, the number of the connecting bolts is large, and each disassembly and assembly are long in time and low in efficiency.
(C) The comprehensive cost is high. Considering the requirement of large torque transmission of a drilling machine, in order to improve the overall strength of the transmission device, the transmission device is generally integrally formed by adopting large-diameter steel, the processing amount is large, the loss is large, and the transmission device is frequently replaced when in use, so that the comprehensive cost is very high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a quick-change bidirectional transmission device for a coal mine underground middle loading and unloading rod drilling machine and a use method thereof. The technical problems of short service life, low disassembly and replacement efficiency and high comprehensive cost of a transmission device for a coal mine underground middle loading and unloading rod drilling machine in the prior art are solved.
In order to solve the technical problems, the invention adopts the following technical scheme:
The quick-change bidirectional transmission device for the underground coal mine middle loading and unloading rod drilling machine comprises a power shaft and a transmission shaft which are sequentially connected, wherein a limiter is sleeved outside the power shaft and the transmission shaft, and a locker is sleeved outside the limiter.
The limiter comprises a hollow limiting tube; two or more positioning cabins which are distributed at equal intervals in the circumferential direction are arranged on the side wall of the rear part of the limiting pipe in the radial direction, the radial outer end of each positioning cabin is opened, a first eyelet which is communicated with the inside of the limiting pipe is arranged at the radial bottom of each positioning cabin, and the inner diameter of the first eyelet is smaller than that of each positioning cabin; an annular cover plate is arranged at the open radial outer end of the positioning cabin, and a second eyelet is arranged in the middle of the cover plate, and the inner diameter of the second eyelet is equal to that of the first eyelet.
The positioning cabin in be provided with the locating pin that can radial motion, locating pin and first aperture and second aperture cooperate the installation, the locating pin on the cover be equipped with reset spring, reset spring's one end top is in the bottom of positioning cabin, reset spring's the other end top is in the radial bottom of the integrative fixed annular boss that sets up on the locating pin, the radial top of annular boss is spacing through the apron.
The end part of the locating pin extending out of the second eyelet of the cover plate is provided with an outer inclined conical surface; the locking device comprises a hollow locking tube, wherein the rear end of the inside of the locking tube is an inner inclined conical surface, the taper of the inner inclined conical surface is the same as that of the outer inclined conical surface, and the inner inclined conical surface is matched with the outer inclined conical surface, so that the axial movement of the locking tube drives the radial movement of the positioning pin.
The power shaft comprises a hollow power shaft body; the outer surface of the power shaft body is provided with an annular positioning groove, and when the annular positioning groove is aligned with the first eyelet, the positioning pin can enter the annular positioning groove under the extrusion of the locking pipe, so that the positioning and locking of the power shaft and the limiter are realized.
The invention also has the following technical characteristics:
The transmission shaft comprises a hollow transmission shaft body, a first positioning section is arranged at the front part of the outer side of the transmission shaft body, and the outer diameter of the first positioning section is smaller than that of the transmission shaft body; the front end of the limiting pipe is internally provided with a first positioning boss which stretches inwards, the first positioning boss is sleeved on the first positioning section, and the first positioning boss is positioned through a shaft shoulder between the first positioning section and the transmission shaft body, so that the limiting locking of the transmission shaft and the limiter is realized.
The outer front part of the limiting pipe is provided with a second positioning section, and the outer diameter of the second positioning section is smaller than that of the limiting pipe; the front end of the inner part of the locking pipe is provided with a second positioning boss which stretches inwards, the second positioning boss is sleeved on the second positioning section, and the second positioning boss is positioned through a shaft shoulder between the second positioning section and the limiting pipe, so that the positioning and locking of the limiter and the locker are realized.
The second positioning section is provided with a third male thread, the inner wall of the second positioning boss is provided with a third female thread, and the stopper and the locking device are detachably connected and locked through the matching installation of the third male thread and the third female thread.
Two or more first tool holes are formed in the front end face of the limiting pipe along the axial direction; two or more second tool holes are formed in the front end face of the locking pipe along the axial direction.
The front end of the power shaft body is provided with a first male thread, the rear end of the transmission shaft body is provided with a first female thread, and the connection between the power shaft body and the transmission shaft body is realized through the matching installation of the first male thread and the first female thread.
The rear end of the power shaft body is provided with a flange plate connected with a power head of the drilling machine; the flange plate is circumferentially provided with a group of axially-arranged bolt holes, and the rear end face of the flange plate is provided with a sealing groove.
The front end of the transmission shaft body is provided with a second male thread connected with the drill rod.
The invention also provides a use method of the quick-change type bidirectional transmission device for the underground coal mine middle rod loading and unloading drilling machine, and the method adopts the quick-change type bidirectional transmission device for the underground coal mine middle rod loading and unloading drilling machine.
Compared with the prior art, the invention has the following technical effects:
the invention adopts the technical means of quick-change structure, quick screw thread disassembly, axial locking and looseness prevention, part replacement and the like, realizes the bidirectional power transmission of the transmission device of the underground middle loading and unloading rod drilling machine of the coal mine, improves the service life of the transmission device, the disassembly and replacement efficiency, reduces the comprehensive use cost and provides a guarantee for the efficient middle loading and unloading rod drilling construction of an automatic and intelligent drilling machine.
And (II) the invention adopts bidirectional power transmission. Considering the use cost and the replacement efficiency, the bidirectional transmission device adopts a quick-change structure and a threaded connection mode; aiming at the problem that the threaded connection generally only can transmit unidirectional rotation power and is easy to loosen when rotating in the opposite direction, the combined action of the limiter and the locker is utilized to limit the thread loosening space between the power shaft and the transmission shaft, and the power shaft and the transmission shaft are tightly connected together, so that bidirectional power transmission is realized.
(III) the invention has long service life. The bidirectional transmission device adopts a split structure, so that a power shaft, a limiter and a locker which are not easy to damage are separated from a transmission shaft which is easy to damage, the proportion of easy-damaged parts in the whole structure is reduced, and the whole service life is prolonged.
And (IV) the invention has high replacement speed. When the bidirectional transmission device is replaced each time, only two connecting threads between the transmission shaft and the power shaft and between the limiter and the locker are required to be disassembled, and the disassembly and reinstallation speed is high.
(V) the invention has low comprehensive cost. After each damage of the bidirectional transmission device, only the transmission shaft needs to be replaced, so that the whole replacement is avoided; and the transmission shaft has simple structure and low cost, thereby reducing the single replacement cost and improving the comprehensive economic benefit.
Drawings
FIG. 1 is a schematic diagram of the overall cross-sectional structure of a quick-change type two-way transmission device for a coal mine underground middle loading and unloading rod drilling machine.
Fig. 2 is a schematic cross-sectional structure of the power shaft.
Fig. 3 is a schematic cross-sectional view of a drive shaft.
Fig. 4 is a schematic overall sectional view of the stopper.
Fig. 5 is a schematic view of the cross-sectional structure A-A in fig. 4.
Fig. 6 is a schematic cross-sectional view of the dowel.
Fig. 7 is a schematic cross-sectional view of the lock.
FIG. 8 is a schematic diagram of the connection and use of the bi-directional transmission.
The meaning of each reference numeral in the figures is: 1-power shaft, 2-transmission shaft, 3-stopper, 4-locker, 5-rig, 6-unit head, 7-drilling rod, 8-holder, 9-two-way transmission, 10-drill bit. 11-drilling.
101-Power shaft body, 102-first male threads, 103-annular positioning grooves, 104-flange plates, 105-bolt holes and 106-sealing grooves.
201-A transmission shaft body, 202-a second male thread, 203-a first female thread, 204-a first positioning section.
301-Limit pipes, 302-positioning cabins, 303-positioning pins, 304-cover plates, 305-return springs, 306-first positioning bosses, 307-second positioning sections, 308-first tool holes, 309-third male threads, 310-first holes and 311-second holes.
30301-External inclined conical surface and 30302-annular boss.
401-Locking tube, 402-internal beveled taper, 403-second locating boss, 404-second tool hole, 405-third female thread.
The following examples illustrate the invention in further detail.
Detailed Description
All the components and devices of the present invention are known in the art unless otherwise specified. Such as drills, power heads, drill rods, holders and drills, all using equipment known in the art.
The invention provides a quick-change type bidirectional transmission device and a quick-change type bidirectional transmission method for a middle rod adding and removing drilling machine in a coal mine, which are researched and designed to overcome the defects of short service life, low disassembly and replacement efficiency, high comprehensive cost and the like of the traditional quick-change type bidirectional transmission device for the middle rod adding and removing drilling machine in the coal mine.
The bidirectional transmission device comprises a power shaft, a transmission shaft, a limiter sleeved outside the power shaft and the transmission shaft and a locker sleeved outside the limiter, wherein the power shaft and the transmission shaft are sequentially connected. When the bidirectional transmission device is used, under the combined action of the limiter and the locker, the power shaft and the transmission shaft are tightly connected together, and forward rotation power and reverse rotation power of the drilling machine are transmitted to the drill rod, so that the drill bit is driven to break rock for drilling; when the transmission shaft is worn, the locking device and the limiting device are disassembled in sequence, so that the transmission shaft can be replaced quickly. The invention solves the problems of easy abrasion of the screw thread of the drill rod frequently detached by the transmission device of the underground middle drill rod detaching machine of the coal mine, short service life, low detaching and replacing efficiency, high comprehensive cost and the like, and provides a guarantee for the high-efficiency middle drill rod detaching construction of the automatic and intelligent drill machine.
The following specific embodiments of the present application are provided, and it should be noted that the present application is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical scheme of the present application fall within the protection scope of the present application.
Example 1:
the embodiment provides a quick-change type bidirectional transmission device for a coal mine underground middle loading and unloading rod drilling machine, which comprises a power shaft 1 and a transmission shaft 2 which are sequentially connected, wherein a limiter 3 is sleeved outside the power shaft 1 and the transmission shaft 2, and a locker 4 is sleeved outside the limiter 3.
As shown in fig. 4 and 5, the stopper 3 includes a hollow stopper tube 301; two or more positioning cabins 302 distributed at equal intervals in the circumferential direction are arranged on the side wall of the rear part of the limiting pipe 301 in the radial direction, the radial outer ends of the positioning cabins 302 are opened, a first eyelet 310 communicated with the inside of the limiting pipe 301 is arranged at the radial bottom of each positioning cabin 302, and the inner diameter of the first eyelet 310 is smaller than that of the positioning cabin 302; an annular cover plate 304 is mounted to the open radially outer end of the positioning pod 302, and a second bore 311 is provided in the middle of the cover plate 304, the second bore 311 having an inner diameter equal to the inner diameter of the first bore 310.
As shown in fig. 4 and 5, a positioning pin 303 capable of moving radially is arranged in the positioning cabin 302, the positioning pin 303 is matched with the first eyelet 310 and the second eyelet 311, a return spring 305 is sleeved on the positioning pin 303, one end of the return spring 305 is propped against the bottom of the positioning cabin 302, the other end of the return spring 305 is propped against the radial bottom of an annular boss 30302 integrally and fixedly arranged on the positioning pin 303, and the radial top of the annular boss 30302 is limited by a cover plate 304.
As shown in fig. 6, the end of the positioning pin 303 extending out of the second hole 311 of the cover plate 304 is provided with an outer inclined conical surface 30301; as shown in fig. 7, the lock 4 includes a hollow locking tube 401, and an inner tapered surface 402 is formed at the inner rear end of the locking tube 401, the taper of the inner tapered surface 402 is the same as the taper of the outer tapered surface 30301, and the inner tapered surface 402 cooperates with the outer tapered surface 30301, so that the axial movement of the locking tube 401 drives the radial movement of the positioning pin 303.
As shown in fig. 2, the power shaft 1 includes a hollow power shaft body 101; the outer surface of the power shaft body 101 is provided with the annular positioning groove 103, and when the annular positioning groove 103 is aligned with the first eyelet 310, the positioning pin 303 can enter the annular positioning groove 103 under the extrusion of the locking pipe 401, so that the positioning and locking of the power shaft 1 and the limiter 3 are realized.
As a specific scheme of the embodiment, as shown in fig. 3, the transmission shaft 2 includes a hollow transmission shaft body 201, a first positioning section 204 is provided at the front part of the outer side of the transmission shaft body 201, and the outer diameter of the first positioning section 204 is smaller than the outer diameter of the transmission shaft body 201; as shown in fig. 4, a first positioning boss 306 extending inwards is arranged inside the front end of the limiting tube 301, the first positioning boss 306 is sleeved on the first positioning section 204, and the first positioning boss 306 is positioned through a shaft shoulder between the first positioning section 204 and the transmission shaft body 201, so that limiting locking of the transmission shaft 2 and the limiter 3 is realized.
As a specific scheme of this embodiment, as shown in fig. 4, a second positioning section 307 is provided at the front part of the outer side of the limiting pipe 301, and the outer diameter of the second positioning section 307 is smaller than the outer diameter of the limiting pipe 301; as shown in fig. 7, the front end of the inner part of the locking tube 401 is provided with a second positioning boss 403 extending inwards, the second positioning boss 403 is sleeved on the second positioning section 307, and the second positioning boss 403 positions through a shaft shoulder between the second positioning section 307 and the limiting tube 301, so that the positioning and locking of the limiter 3 and the locker 4 are realized.
Further preferably, as shown in fig. 1,4 and 7, the second positioning section 307 is provided with a third male thread 309, the inner wall of the second positioning boss 403 is provided with a third female thread 405, and the stopper 3 and the lock 4 are detachably connected and locked by the cooperation of the third male thread 309 and the third female thread 405.
As a specific scheme of this embodiment, as shown in fig. 4 and 7, two or more first tool holes 308 are formed along the axial direction on the front end surface of the limiting pipe 301; two or more second tool holes 404 are formed in the front end surface of the lock tube 401 in the axial direction. The tool holes are used for handling the pipe by means of tools, such as fixing and turning.
As a specific scheme of this embodiment, as shown in fig. 1,2 and 3, a first male thread 102 is provided at the front end of a power shaft body 101, a first female thread 203 is provided at the rear end of a transmission shaft body 201, and the connection between the power shaft body 101 and the transmission shaft body 201 is achieved by the cooperation of the first male thread 102 and the first female thread 203.
As a specific scheme of the embodiment, as shown in fig. 2, a flange 104 connected with a power head 6 of a drilling machine 5 is arranged at the rear end of a power shaft body 101; a group of axially-arranged bolt holes 105 are circumferentially distributed on the flange plate 104, and a sealing groove 106 is arranged on the rear end face of the flange plate 104.
As a specific solution of this embodiment, as shown in fig. 3, the front end of the transmission shaft body 201 is provided with a second male thread 202 connected to the drill rod 7.
In this embodiment, the first male thread 102, the first female thread 203, the second male thread 202, the third male thread 30105, and the third female thread 30404 are all positive threads.
Example 2:
The embodiment provides a use method of the quick-change type bidirectional transmission device for the underground coal mine middle rod loading and unloading drilling machine, and the method adopts the quick-change type bidirectional transmission device for the underground coal mine middle rod loading and unloading drilling machine provided in the embodiment 1.
As shown in fig. 8, the use method specifically includes the following steps:
step one, mounting a power shaft:
after a gasket is installed in the seal groove 106 of the power shaft 1, the power shaft 1 is connected to the power head 6 of the drilling machine 5 by bolts.
Step two, mounting and locking a transmission shaft:
Firstly, a transmission shaft 2 is in threaded connection with a power shaft 1; the limiter 3 is then sleeved from the front end of the transmission shaft 2 until the first positioning boss 306 of the limiter 3 abuts against a shoulder between the first positioning section 204 of the transmission shaft 2 and the transmission shaft body 201, and the positioning pin 303 of the limiter 3 is aligned with the annular positioning groove 103 of the power shaft 1. The locking device 4 is sleeved and screwed tightly from the front end of the limiter 3, and through the cooperation of the inner inclined conical surface 402 and the outer inclined conical surface 30301, the axial movement of the locking tube 401 drives the positioning pin 303 to move radially, the return spring 305 is compressed, the locking device 4 pushes the positioning pin 303 of the limiter 3 to extend out of the first eyelet 310 at the bottom of the positioning cabin 302 and enter the annular positioning groove 103 of the power shaft 1, and the transmission shaft 2 and the power shaft 1 are locked together.
Step three, using a bidirectional transmission device:
The bidirectional transmission device 9 is a quick-change bidirectional transmission device for a middle loading and unloading rod drilling machine in a coal mine, the front end of the transmission shaft 2 is connected with the drill rod 7 through threads, the bidirectional transmission device 9 is matched with the power head 6 and the clamp holder 8 of the drilling machine 5 to load and unload the drill rod 7, forward rotation power and feeding and pulling power of the drilling machine 5 are transmitted to the bottom of a hole through the bidirectional transmission device 9 and the drill rod 7, and the drill rod 7 drives the drill bit 10 to rotate to break rock, so that the drilling 11 construction is performed. In the use process of the bidirectional transmission device 9, the power shaft 1 and the transmission shaft 2 are always kept in a fastening connection state.
Step four, replacing a transmission shaft:
When the second male thread 202 of the transmission shaft 2 is worn to a set threshold value, firstly, the threads between the locker 4 and the limiter 3 are disassembled, the locker 4 is disassembled, and the positioning pin 303 of the limiter 3 is reset under the action of the reset spring 305 and is separated from the annular positioning groove 103 of the power shaft 1; secondly, taking down the limiter 3; then, removing the screw thread between the transmission shaft 2 and the power shaft 1, and removing the transmission shaft 2; and repeating the second step, installing a new transmission shaft 2 and locking.
As a preferable scheme of the present embodiment, in the third step, the bidirectional transmission device 9 includes two working conditions of forward rotation transmission and reverse rotation transmission when in use:
Forward rotation driving condition:
When the drill rod 7 is additionally arranged or drilling is performed, the power head 6 of the drilling machine 5 rotates forwards to drive the power shaft 1 of the bidirectional transmission device 9 to rotate forwards, the connecting threads between the power shaft 1 and the transmission shaft 2 bear fastening torque, the threads between the power shaft 1 and the transmission shaft 2 are already screwed, the first positioning boss 306 of the limiting positioner 3 and the positioning pin 303 act, the power shaft 1 and the transmission shaft 2 keep in a fastening connection state, forward rotation power is transmitted to the drill rod 7 connected with the transmission shaft 2, the connecting threads between the transmission shaft 2 and the drill rod 7 are screwed, or the hole bottom drill bit 10 is driven to rotate for rock breaking.
Reverse rotation driving condition:
When the drill rod 7 is disassembled, the power head 6 of the drilling machine 5 reversely rotates to drive the power shaft 1 of the bidirectional transmission device 9 to reversely rotate, and the connecting screw threads between the power shaft 1 and the transmission shaft 2 bear the loosening torque to generate a disengaging trend; under the action of the first positioning boss 306 and the positioning pin 303 of the limiter 3, the power shaft 1 and the transmission shaft 2 lack of loose buckling space, keep on in a fastening connection state, transmit reverse rotation power to the drill rod 7 connected with the transmission shaft 2, and release the connection between the transmission shaft 2 and the drill rod 7.
Claims (7)
1. The quick-change bidirectional transmission device for the underground coal mine middle loading and unloading rod drilling machine is characterized by comprising a power shaft (1) and a transmission shaft (2) which are sequentially connected, wherein a limiter (3) is sleeved outside the power shaft (1) and the transmission shaft (2), and a locker (4) is sleeved outside the limiter (3);
The limiter (3) comprises a hollow limiting tube (301); two or more positioning cabins (302) which are distributed at equal intervals in the circumferential direction are arranged on the side wall of the rear part of the limiting pipe (301) in the radial direction, the radial outer end of each positioning cabin (302) is open, a first eyelet (310) communicated with the inside of the limiting pipe (301) is formed in the radial bottom of each positioning cabin (302), and the inner diameter of each first eyelet (310) is smaller than that of each positioning cabin (302); an annular cover plate (304) is arranged at the open radial outer end of the positioning cabin (302), a second hole (311) is formed in the middle of the cover plate (304), and the inner diameter of the second hole (311) is equal to that of the first hole (310);
The positioning cabin (302) is internally provided with a positioning pin (303) capable of radially moving, the positioning pin (303) is matched with the first eyelet (310) and the second eyelet (311), the positioning pin (303) is sleeved with a return spring (305), one end of the return spring (305) is propped against the bottom of the positioning cabin (302), the other end of the return spring (305) is propped against the radial bottom of an annular boss (30302) integrally and fixedly arranged on the positioning pin (303), and the radial top of the annular boss (30302) is limited by a cover plate (304);
The end part of the positioning pin (303) extending out of the second hole (311) of the cover plate (304) is provided with an external inclined conical surface (30301); the locking device (4) comprises a hollow locking tube (401), wherein the rear end of the interior of the locking tube (401) is provided with an inner inclined conical surface (402), the taper of the inner inclined conical surface (402) is the same as that of the outer inclined conical surface (30301), and the inner inclined conical surface (402) is matched with the outer inclined conical surface (30301) so that the axial movement of the locking tube (401) drives the radial movement of the positioning pin (303);
The power shaft (1) comprises a hollow power shaft body (101); the outer surface of the power shaft body (101) is provided with an annular positioning groove (103), and when the annular positioning groove (103) is aligned with the first eyelet (310), the positioning pin (303) can enter the annular positioning groove (103) under the extrusion of the locking pipe (401), so that the positioning and locking of the power shaft (1) and the limiter (3) are realized;
The transmission shaft (2) comprises a hollow transmission shaft body (201), a first positioning section (204) is arranged at the front part of the outer side of the transmission shaft body (201), and the outer diameter of the first positioning section (204) is smaller than the outer diameter of the transmission shaft body (201); the front end of the limiting pipe (301) is internally provided with a first positioning boss (306) stretching inwards, the first positioning boss (306) is sleeved on the first positioning section (204), and the first positioning boss (306) is positioned through a shaft shoulder between the first positioning section (204) and the transmission shaft body (201) to realize limiting and locking of the transmission shaft (2) and the limiter (3);
The outer front part of the limiting pipe (301) is provided with a second positioning section (307), and the outer diameter of the second positioning section (307) is smaller than the outer diameter of the limiting pipe (301); the front end of the inside of the locking pipe (401) is provided with a second positioning boss (403) stretching inwards, the second positioning boss (403) is sleeved on the second positioning section (307), and the second positioning boss (403) is positioned through a shaft shoulder between the second positioning section (307) and the limiting pipe (301) so as to realize positioning and locking of the limiter (3) and the locker (4).
2. The quick-change bidirectional transmission device for the underground coal mine middle loading and unloading rod drilling machine according to claim 1, wherein a third male thread (309) is arranged on the second positioning section (307), a third female thread (405) is arranged on the inner wall of the second positioning boss (403), and the detachable connection and locking of the limiter (3) and the locker (4) are realized through the matching installation of the third male thread (309) and the third female thread (405).
3. The quick-change bidirectional transmission device for the underground coal mine middle loading and unloading rod drilling machine according to claim 1, wherein two or more first tool holes (308) are formed in the front end surface of the limiting pipe (301) along the axial direction; two or more second tool holes (404) are formed in the front end surface of the locking pipe (401) along the axial direction.
4. The quick-change bidirectional transmission device for the underground coal mine middle loading and unloading rod drilling machine, according to claim 1, is characterized in that a first male thread (102) is arranged at the front end of the power shaft body (101), a first female thread (203) is arranged at the rear end of the transmission shaft body (201), and the connection between the power shaft body (101) and the transmission shaft body (201) is realized through the matching installation of the first male thread (102) and the first female thread (203).
5. The quick-change type bidirectional transmission device for the underground coal mine middle loading and unloading rod drilling machine, as claimed in claim 1, is characterized in that a flange (104) connected with a power head (6) of the drilling machine (5) is arranged at the rear end of the power shaft body (101); a group of axially-arranged bolt holes (105) are circumferentially distributed on the flange plate (104), and a sealing groove (106) is formed in the rear end face of the flange plate (104).
6. The quick-change type bidirectional transmission device for the underground coal mine middle loading and unloading rod drilling machine according to claim 1, wherein the front end of the transmission shaft body (201) is provided with a second male thread (202) connected with a drill rod (7).
7. A method for using the quick-change type bidirectional transmission device for the underground coal mine middle rod loading and unloading drilling machine, which is characterized in that the quick-change type bidirectional transmission device for the underground coal mine middle rod loading and unloading drilling machine is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211174632.0A CN115467902B (en) | 2022-09-26 | 2022-09-26 | Quick-change type bidirectional transmission device and method for underground coal mine middle loading and unloading rod drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211174632.0A CN115467902B (en) | 2022-09-26 | 2022-09-26 | Quick-change type bidirectional transmission device and method for underground coal mine middle loading and unloading rod drilling machine |
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| Publication Number | Publication Date |
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| CN115467902A CN115467902A (en) | 2022-12-13 |
| CN115467902B true CN115467902B (en) | 2024-10-18 |
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| CN202211174632.0A Active CN115467902B (en) | 2022-09-26 | 2022-09-26 | Quick-change type bidirectional transmission device and method for underground coal mine middle loading and unloading rod drilling machine |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014352A (en) * | 2016-05-18 | 2016-10-12 | 中煤科工集团西安研究院有限公司 | Tube following sieve tube feeding device outside coal mine underground drill pipe and construction method thereof |
| CN212360533U (en) * | 2019-12-13 | 2021-01-15 | 浙江兆弟技术有限公司 | Coupling and be used for shaft coupling of drilling rod connection |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7104345B2 (en) * | 2004-06-22 | 2006-09-12 | Pathfinder Energy Services, Inc. | Downhole rotatable-shaft connector assembly and method |
| CN2756897Y (en) * | 2004-10-08 | 2006-02-08 | 浙江三鸥机械股份有限公司 | Quick changing joint |
| EP2905418A1 (en) * | 2014-02-11 | 2015-08-12 | Sandvik Intellectual Property AB | Drill string component coupling device |
| RU2674485C1 (en) * | 2017-11-29 | 2018-12-11 | Общество с ограниченной ответственностью "Перфобур" | Small size spindle of sectional screw downhole motor |
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2022
- 2022-09-26 CN CN202211174632.0A patent/CN115467902B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014352A (en) * | 2016-05-18 | 2016-10-12 | 中煤科工集团西安研究院有限公司 | Tube following sieve tube feeding device outside coal mine underground drill pipe and construction method thereof |
| CN212360533U (en) * | 2019-12-13 | 2021-01-15 | 浙江兆弟技术有限公司 | Coupling and be used for shaft coupling of drilling rod connection |
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| Publication number | Publication date |
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| CN115467902A (en) | 2022-12-13 |
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