CN107939277B - Low-clearance double-rotary drilling machine and construction method thereof - Google Patents
Low-clearance double-rotary drilling machine and construction method thereof Download PDFInfo
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- CN107939277B CN107939277B CN201711385608.0A CN201711385608A CN107939277B CN 107939277 B CN107939277 B CN 107939277B CN 201711385608 A CN201711385608 A CN 201711385608A CN 107939277 B CN107939277 B CN 107939277B
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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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- 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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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
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
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- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a low-clearance double-rotary drilling machine and a construction method thereof, wherein the low-clearance double-rotary drilling machine comprises a drilling machine platform, an upright post and a drilling machine power head, and the drilling machine platform is supported and arranged on a translation trolley of a long ship; the drilling machine power head is slidingly assembled on the upright post at the front end of the drilling machine platform, and a pulling and pressing oil cylinder for driving the drilling machine power head to lift is arranged between the upright post and the drilling machine power head; the prime motor, the main speed reducer and the shunt speed reducer of the drilling machine power head are fixedly arranged on the frame and are sequentially connected in series in a transmission way, and the central output shaft and the peripheral output shaft are respectively connected with two power output ends of the shunt speed reducer in a transmission way; the center output shaft is detachably connected with the split type spliced drill rod and the drill rod drill bit, the periphery output shaft is detachably connected with the split type spliced sleeve and the split type spliced sleeve drill bit, so that sectional drilling construction is realized, pile foundation drilling construction can be performed under the condition of low clearance, construction operation is safe, efficiency is high, quality is good, slurry protection is not needed, and no environmental pollution is caused.
Description
Technical Field
The invention belongs to drilling pile machine equipment, and relates to a double-rotary drilling machine capable of being constructed under a low clearance condition.
Background
With the development of urban subway construction, a PBA construction method with high efficiency and low cost in subway station construction is generated, the earth surface is not required to be excavated, the urban environment protection and sanitation are maintained, the ground traffic is not influenced, and the normal life of citizens is not influenced; however, the construction difficulty of the construction method is that piles are required to be drilled in the pilot tunnel under the condition of low clearance (narrow space), the cross section size of the pilot tunnel is only 3.5-4 m wide and 4.5-5 m high, and the drilling depth is required to be twenty-several m. At present, the pore-forming methods of the construction method mainly comprise two methods: firstly, manually digging holes, and secondly, drilling holes by using a reverse circulation drilling machine; but it has the following problems: the former is low in efficiency and unsafe; the latter needs to use mud dado when drilling, and mud can cause the pollution to the environment, and pile body shape and quality are difficult to control when unstable bottom construction in addition, and the efficiency of construction is also unsatisfactory. So the market needs a drilling machine which has no wall protection slurry pollution, is safe and environment-friendly, and has high efficiency and good quality to solve the problems.
At present, the drilling machine capable of solving the problem of wall protection mud pollution in the prior art mainly comprises: pipe rubbing machine, full casing drilling machine, double-power-head casing drilling machine and single-power-head casing drilling machine. However, the former two kinds of drilling machines still have the problem of low construction efficiency, and the latter two kinds of drilling machines are as disclosed: separate driving type casing spiral drilling machine and construction method thereof (ZL 200610138353.3), multifunctional drilling machine and construction method thereof (ZL 0313579.0); although the two kinds of drilling machines can solve the problem of wall protection mud pollution, can also ensure safety, environmental protection, high efficiency and good quality, the overall dimension of the drilling machine is too large to be suitable for construction in pilot tunnel under the low clearance condition with clearance less than 10 meters.
Disclosure of Invention
The invention solves the technical problems that: aiming at the defect that the existing drilling machine works under the low clearance condition, the novel low clearance double-rotary drilling machine and the construction method thereof are provided.
The invention is realized by adopting the following technical scheme:
the low-clearance double-rotary drilling machine comprises a drilling machine platform 3, a stand column 4 and a drilling machine power head 5, wherein,
the drilling machine platform 3 is supported and arranged on two groups of long ships 1 which are arranged in parallel along the front-back direction of the drilling machine, a translation trolley 1c which moves along the front-back direction of the drilling machine is arranged on the long ship 1, and the drilling machine platform 3 is supported on the translation trolley 1 c;
the stand column 4 is fixedly arranged at the front end of the drilling platform 3, a vertical stand column guide rail 4b is arranged on the stand column 4, the drilling machine power head 5 is slidably assembled on the stand column guide rail 4b through a stand 5g, and a pulling pressure oil cylinder 4d for driving the drilling machine power head to lift is arranged between the stand column 4 and the stand 5 g;
the drilling machine power head 5 comprises a prime motor 5c, a main speed reducer 5c, a split speed reducer 5b, a central output shaft 5d and a peripheral output shaft 5e, wherein the prime motor 5c, the main speed reducer 5c and the split speed reducer 5b are fixedly arranged on a frame 5g and are sequentially connected in series in a transmission manner, the split speed reducer 5b is provided with two power output ends which are coaxially arranged, and the central output shaft 5d and the peripheral output shaft 5e are coaxially arranged and are respectively connected with the two power output ends of the split speed reducer 5b in a transmission manner;
the center output shaft 5d is detachably connected with the split-type spliced drill rod 8 and the drill rod drill bit 9, and the periphery output shaft 5e is detachably connected with the split-type spliced sleeve 6 and the split-type spliced sleeve drill bit 7.
Further, a long ship guide rail 1b arranged along the front-rear direction of the drilling machine is arranged on a long ship base 1a of the long ship 1, the translation trolley 1c is assembled in a rolling way along the long ship guide rail 1b, and a translation oil cylinder 1d for pushing the translation trolley 1c to move is arranged on the long ship base 1 a.
Further, the front end and the rear end of the drilling machine platform 3 are supported and arranged on a short ship 2 vertical to a long ship, a short ship guide rail 2b vertical to the long ship guide rail 1b is arranged on a short ship base 2a of the short ship 2, a traversing trolley 2c is arranged on the short ship guide rail 2b, the front end and the rear end of the drilling machine platform 3 are supported on the traversing trolley 2c, and a traversing oil cylinder 2d for pushing the traversing trolley 2c to move is arranged on the short ship base 2 a.
Further, the platform body 3a of the drilling platform 3 is supported on the translation trolley 1c of the long ship 1 in a lifting manner through the lifting cylinder 3b, and the long ship 1 and the short ship 2 can be alternately landed through the lifting of the lifting cylinder 3b, so that the conversion of the front-back and left-right movement or the steering state is realized; the bottoms of the front end and the rear end of the platform body 3a are supported on the traversing trolley 2c of the short boat 2 through the rotating base 3d and the hinging heads 3c, so that the traversing trolley 2c is pushed from opposite directions through the front traversing oil cylinders 2d and the rear traversing oil cylinders 2d, the platform body 3a and the short boat 2 can rotate relatively, and the steering of a drilling machine is realized.
Further, the frame 5g is slidably assembled on the upright guide rail 4b through a plurality of groups of guide blocks 5h, wherein one guide block 5h is connected with a pulling and pressing cylinder 4d arranged on the upright 4 through a hinged support 4 c.
Further, the center output shaft 5d and the drill rod 8, and the outer peripheral output shaft 5e and the sleeve 6 are respectively detachably assembled through a quick-action taper pin 5 f; the sleeves 6 and the drill rods 8 are spliced through connecting taper pins.
In the low clearance double rotary drilling machine of the invention, an operation table 3f and a power station 3e are arranged on a platform body 3a of the drilling machine platform 3.
The invention also discloses a construction method of the low-clearance double-rotary drilling machine, which comprises the following steps:
1) The double rotary drilling machine enters one side of a pile position, the drilling platform 3 moves backwards along the long ship 1, the drilling power head 5 is lifted to the highest position along the upright post 4, and the sleeve 6 provided with the sleeve drill bit and the drill rod 8 provided with the drill rod drill bit are respectively hoisted to the pile position and then placed on the ground vertically;
2) The drilling platform 3 moves forwards along the long ship 1, the drilling machine power head 5 descends along the upright post 4, a drill rod 8 provided with a drill rod and a drill bit is connected with a central output shaft 5d of the drilling machine power head 5, and a sleeve 6 provided with a sleeve drill bit is connected with a peripheral output shaft 5e of the drilling machine power head 5;
3) Starting a drilling machine power head 5, driving a central output shaft 5d and a peripheral output shaft 5e to respectively drive a drill rod 8 and a sleeve 6 to rotate in the same axis and opposite directions with different rotating speeds, and driving the drilling machine power head 5 by means of a pulling oil cylinder 4d to drive the drill rod 8 and the sleeve 6 to drill downwards to a preset position while rotating;
4) Disconnecting the sleeve 6 and the drill rod 8 in the step 3) from the peripheral output shaft 5e and the central output shaft 5d respectively, lifting the drilling machine power head 5 to the highest position along the upright post 4, moving the drilling machine platform 3 backwards along the long ship 1, hoisting the next sleeve 6 without a sleeve drill bit and the drill rod 8 without a drill rod drill bit to a pile position, and splicing the sleeve and the drill rod which are drilled underground respectively;
5) The drilling platform 3 moves forwards along the long ship 1, the drilling machine power head 5 descends along the upright post 4, the drilling rod 8 hoisted in the 4 th step is connected with the central power output shaft 5d of the drilling machine power head 5, and the sleeve 6 hoisted in the 4 th step is connected with the peripheral power output shaft 5e of the drilling machine power head 5;
6) Starting a drilling machine power head 5, driving a central output shaft 5d and a peripheral output shaft 5e to respectively drive a drill rod 8 and a sleeve 6 which are spliced into a whole in the step 4 to rotate in the same axis and opposite directions with different rotating speeds, and driving the drilling machine power head 5 by means of a pulling oil cylinder 4d to drive the drill rod 8 and the sleeve 6 to rotate and drill downwards to a preset position;
7) Repeating the steps 4), 5) and 6) until the spliced sleeve and the drill rod are drilled to the design depth of the pile hole;
8) The uppermost sleeve is disconnected with the peripheral output shaft 5e, the sleeve is integrally left underground, the drilling machine power head 5 is lifted along the upright post 4, the drill rod and the drill bit are integrally lifted, and the drill rod is disconnected with the central output shaft 5d through the drill rod section and sequentially lifted from the hole site;
9) The power head 5 of the drilling machine is lifted to the highest position along the upright post 4, the drilling platform 3 moves backwards along the long ship 1, and the reinforcement cage 10 is hoisted into the hole to pour the concrete 11;
10 The drilling platform 3 moves forwards along the long ship 1, the drilling power head 5 is lifted along the upright post 4, the sleeve and the sleeve drill bit are lifted up integrally, and the sleeve segments are disconnected with the peripheral output shaft 5e and are lifted away from the hole site in sequence; the construction of the pile hole is completed.
11 Repeating the steps 1) to 10) until the construction of all pile holes is completed.
Further, the depth of each drill rod 8 and casing 6 section drilling does not exceed the section length of the drill rod 8 and casing 6.
The double-rotary drilling machine and the construction method thereof have the following positive effects and advantages:
1. when the low-clearance double-rotary drilling machine is used for construction, the sleeve and the sleeve drill bit whole and the drill rod drill bit whole can rotate in opposite directions to drill into a stratum, meanwhile, the peripheral sleeve can also protect the hole wall from collapsing, construction is safe, wall protection slurry is not needed, and no environmental pollution is caused;
2. the low-clearance double-rotary drilling machine has the advantages that the sleeve and the sleeve drill bit are integrally combined with the drill rod and the drill rod drill bit to form a spliced drilling tool structure, the integral rigidity is high, the drilled pile cannot deviate, the vertical precision is high, and the pile forming quality is good;
3. by adopting the low-clearance double-rotary drilling machine, high-speed continuous soil discharge can be realized by utilizing the helical blades of the drill rod, and the construction efficiency is high;
4. the running mechanism and the power head of the low-clearance double-rotary drilling machine are compact in transmission structure, small in size, light in weight, stable and reliable in complete machine movement and resetting, and the construction mode of sectional drilling is adopted, so that the low-clearance double-rotary drilling machine can adapt to the construction condition of low clearance, and the pile foundation drilling construction is realized under the low-clearance condition in an environment-friendly, safe, high-efficiency and high-quality manner.
The invention is further described below with reference to the drawings and detailed description.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a low clearance dual rotary drill rig connection drilling tool in an embodiment.
Fig. 2 is a front view of a low headroom dual swing drilling rig in an embodiment.
Fig. 3 is a left side view of a low headroom dual swing drilling rig in an embodiment.
Fig. 4 is a right side view of a low headroom dual rotary drill in an embodiment.
Fig. 5 is a top view of a low headroom dual rotary drill in an embodiment.
Fig. 6 is a schematic illustration of the connection of the drill power head of the low headroom dual rotary drill to the sleeve (including sleeve drill bit) and drill pipe (including drill pipe drill bit), respectively, in an embodiment.
Fig. 7 is a schematic diagram of the connection of a joint sleeve and a drill rod by a drill power head of a low headroom dual rotary drill in an embodiment.
Fig. 8a-8i are schematic views of the construction steps of a low headroom dual rotary drill rig in an embodiment.
Reference numerals in the drawings:
1-long ship, 1 a-long ship base, 1 b-long ship guide rail, 1 c-translation trolley and 1 d-translation cylinder;
2-short ship, 2 a-short ship base, 2 b-short ship guide rail, 2 c-traversing trolley and 2 d-traversing oil cylinder;
the device comprises a 3-drilling machine platform, a 3 a-platform body, a 3 b-jacking oil cylinder, a 3 c-articulated head, a 3 d-rotating base, a 3 f-operating platform and a 3 e-power station;
4-upright posts, 4 a-main upright posts, 4 b-upright post guide rails, 4 c-hinged supports and 4 d-pulling and pressing oil cylinders;
the drilling machine comprises a 5-drilling machine power head, a 5 a-main speed reducer, a 5 b-split speed reducer, a 5 c-prime motor, a 5 d-central power output shaft, a 5 e-peripheral power output shaft, a 5 f-quick-acting taper pin, a 5 g-rack, a 5 h-guide block and a 5 i-power head seat;
6-sleeve, 6 a-connecting taper pin;
a 7-casing bit, wherein the casing bit,
8-drill rod, 8 a-connecting taper pin;
9-a drill rod drill bit;
10-reinforcement cage;
11-concrete.
Detailed Description
Examples
Referring to fig. 1 and 2, the low headroom dual rotary drilling machine is a preferred embodiment of the present invention, and specifically includes: long boat 1, short boat 2, rig floor 3, column 4, rig unit head 5 and drilling tool consisting of sleeve 6, sleeve bit 7, drill pipe 8 and drill pipe bit 9.
Referring to fig. 3, 4 and 5 in combination, the long boat 1 includes a long boat base 1a, a long boat rail 1b provided on the long boat base 1a, a translation carriage 1c movable along the rail 1b, and a translation cylinder 1d driving the translation carriage 1 c;
the short boat 2 comprises a short boat base 2a, a short boat guide rail 2b arranged on the short boat base 2a, a traversing trolley 2c capable of moving along the short guide rail 2b and a traversing cylinder 2d for driving the traversing trolley 2 c;
the drilling machine platform 3 comprises a platform body 3a, jacking oil cylinders 3b arranged on two sides of the platform body 3a, rotating bases 3d and hinged joints 3c arranged on the lower parts of the front end and the rear end of the platform body 3a, and a power station 3e and an operating platform 3f arranged on the platform body 3 a;
the upright column 4 comprises a main upright column 4a fixed on the drilling platform 3, an upright column guide rail 4b arranged on the main upright column 4a, a hinged support 4c and a pulling oil cylinder 4d;
the drill power head 5 comprises a main speed reducer 5a, a split speed reducer 5b, a prime motor 5c, a central output shaft 5d, a peripheral output shaft 5e, a frame 5g and a guide block 5h.
Specifically, the drilling machine platform 3 is a main body of the drilling machine, a platform body 3a of the drilling machine platform is supported and arranged on the long ship 1 and the short ship 2 through a jacking oil cylinder 3b and a rotating base 3d, long ship bases 1a of two groups of long ships 1 are arranged in parallel along the front-back direction of the drilling machine, long ship guide rails 1b on the long ship guide rails are arranged in parallel along the front-back direction of the drilling machine, front-back translation trolleys 1c are arranged on each long ship guide rail 1b, rollers of the translation trolleys 1c roll along the long ship guide rails 1b, one end of the translation oil cylinder 1d is hinged and fixed on the long ship base 1a, and the other end of the translation oil cylinder 1d is connected to the translation trolleys 1c to realize that the translation trolleys 1c move along the front-back direction of the drilling machine. The short ship bases 2a of the two groups of short ships 2 are perpendicular to the long ship bases and are arranged below the front end and the rear end of the drilling platform 3, the short ship bases 2a of the short ships 2 are provided with short ship guide rails 2b perpendicular to the long ship guide rails 1b, the short ship guide rails 2b are provided with traversing trolleys 2c, rollers of the traversing trolleys 2c roll along the short ship guide rails 2b, one end of a traversing oil cylinder 2d is hinged and fixed on the short ship base 2a, and the other end of the traversing oil cylinder 2d is connected to the traversing trolleys 2c, so that the traversing trolleys 2c move left and right along the drilling machine.
The drilling machine platform 3 is supported on the translation trolley 1c of the long ship 1 through jacking cylinders 3b, front and rear groups of jacking cylinders 3b are respectively arranged on the left side and the right side of a platform body 3a of the drilling machine platform 3, the bottom of each jacking cylinder 3b is supported and connected on the translation trolley 1c, the other end of each jacking cylinder is fixedly arranged on the platform body 3a, and lifting connection between the drilling machine platform 3 and the translation trolley 1c is realized through the jacking cylinders 3 b. The bottoms of the front and rear ends of the platform body 3a are supported on the traversing carriage 2c of the short boat 2 through a rotating base 3d and a hinge joint 3 c.
By lifting the lifting cylinder 3b, the long boat 1 and the short boat 2 can be alternately landed, and then the conversion of the whole drilling machine between front and back and left and right movement or steering states is realized by moving the translation trolley 1c and the traversing trolley 2c respectively.
The main column 4a of the column 4 is fixedly arranged at the front end of the drilling platform 3, a vertical column guide rail 4b is arranged on the main column 4a, a drilling machine power head 5 is slidably assembled on the column guide rail 4b through a frame 5g, three groups of guide blocks 5h are arranged on the frame 5g along the vertical direction, the guide blocks 5h are slidably assembled on the column guide rail 4b, the frame 5g and the uppermost guide blocks 5h are connected through a power head hinged support 5i, swing adjustment in a certain range in the drilling process is realized, a pulling and pressing oil cylinder 4d for driving the drilling machine power head to lift is arranged between the column 4 and the frame 5g, one end of the pulling and pressing oil cylinder 4d is connected to the main column 4a, and the other end of the guide block 5h at the lowest side is connected through a hinged support 4c, and the drilling machine power head 5 is driven to lift along the column through the pulling and pressing oil cylinder 4 d.
As shown in fig. 6 and 7, the driving part of the drilling machine power head 5 includes a prime mover 5c, a main speed reducer 5c, a split speed reducer 5b, a central output shaft 5d and an outer peripheral output shaft 5e, where the prime mover 5c, the main speed reducer 5c and the split speed reducer 5b are fixedly mounted on a frame 5g and are sequentially connected in series in a transmission manner, the split speed reducer 5b has two power output ends arranged at the same axis, the central output shaft 5d and the outer peripheral output shaft 5e are coaxially arranged, the central output shaft 5d is a transmission shaft arranged with the central output shaft 5d as the axis, the outer peripheral shaft 5e can adopt a cylindrical shaft with the central output shaft 5d as the axis, the central output shaft 5d and the outer peripheral output shaft 5e are respectively connected with the two power output ends of the split speed reducer 5b in a transmission manner, and can be respectively driven by at least one prime mover 5c, the split speed reducer 5a decelerates the power, and then the central output shaft 5d and the outer peripheral output shaft 5e are respectively rotated in different directions according to the same axis, and the split speed of rotation of the split speed reducer 5b is arranged according to the split speed of the planetary gear train 5 d.
Through the center output shaft 5d and the detachable connection between drilling rod 8 and drilling rod drill bit 9, can dismantle between periphery output shaft 5e and sleeve pipe 6 and sleeve pipe drill bit 7 and be connected, wherein drilling rod 8 adopts helical blade, and sleeve 6 suit is in drilling rod 8 periphery, and its tip is fixed sleeve drill bit 7 and drilling rod drill bit 9 respectively. The center output shaft 5d and the drill rod 8 and the outer periphery output shaft 5e and the sleeve 6 are respectively detachably assembled through the quick-action taper pin 5f, and the quick connection of the segmented sleeve 6 and the segmented drill rod 8 can be realized through the quick-action taper pin 5f capable of being quickly assembled and disassembled. The whole between the casing 6 and the casing bit 7, and the whole between the drill rod 8 and the drill rod bit 9 are driven by the central output shaft 5d and the peripheral output shaft 5e to rotate in opposite directions at different rotation speeds respectively on the same axis for drilling.
The sleeve 6 and the drill rod 8 of the embodiment are respectively of split splicing structures, the sleeve 6 is detachably connected through the connecting taper pin 6a, and the drill rod 8 is detachably connected through the connecting taper pin 8 a.
The platform body 3a of the drilling platform 3 in this embodiment is provided with an operation platform 3f and a power station 3e, where the power station 3e is a hydraulic power station for providing a hydraulic system connected with the translation cylinder 1d, the traversing cylinder 2d, the jacking cylinder 3b, the pulling and pressing cylinder 4d and the prime mover 5c, and the operation platform 3f is used for setting a control module connected with the hydraulic system to implement the operation on each hydraulic executing member. In particular, regarding the arrangement of the hydraulic power station and the control module as a conventional hydraulic control technology, the specific schemes of the operation table 3f and the power station 3e will not be described herein.
The specific construction method of the low headroom dual rotary drilling machine of the present embodiment is described in detail below with reference to fig. 8a-8 i.
As shown in fig. 8a, the double rotary drilling machine enters one side of a pile position, the drilling platform 3 moves backwards along the long ship 1 under the drive of the translation oil cylinder 1d, the drilling power head 5 is lifted to the highest position along the upright post 4 under the drive of the pulling and pressing oil cylinder 4d, and the sleeve 6 provided with the sleeve drill bit 7 and the drill rod 8 provided with the drill rod drill bit 9 are respectively hoisted to the pile position and then placed on the ground vertically;
as shown in fig. 8b, the drilling platform 3 moves forward along the long ship 1 under the drive of the translation oil cylinder 1d, the drilling machine power head 5 descends along the upright post 4 under the drive of the pulling and pressing oil cylinder 4d, the drill rod 8 provided with the drill rod of the drill bit is connected with the central output shaft 5d of the drilling machine power head 5 through the quick-action taper pin 5f, and then the sleeve 6 provided with the sleeve bit is connected with the peripheral output shaft 5e of the drilling machine power head 5;
as shown in fig. 8c, the prime mover 5c of the drilling machine power head 5 is started, the central output shaft 5d and the peripheral output shaft 5e are driven to drive the drill rod 8 and the sleeve 6 to rotate in the same axis and opposite directions with different rotation speeds respectively, and the drilling machine power head 5 is driven by the pulling oil cylinder 4d to drive the drill rod 8 and the sleeve 6 to drill downwards to a preset position while rotating;
as shown in fig. 8d, the casing 6 and the drill rod 8 in the step 3 are respectively disconnected with the peripheral output shaft 5e and the central output shaft 5d, the drilling machine power head 5 is lifted to the highest position along the upright post 4 under the drive of the pulling and pressing oil cylinder 4d, the drilling machine platform 3 moves backwards along the long ship 1 under the drive of the translation oil cylinder 1d, and the next group of casing 6 without a casing bit and drill rod 8 without a drill rod bit are hoisted to a pile position and are respectively spliced with the casing and the drill rod which are drilled underground;
as shown in fig. 8e, the drilling platform 3 moves forward along the long ship 1 under the drive of the translation oil cylinder 1d, the drilling machine power head 5 descends along the upright post 4 under the drive of the pulling and pressing oil cylinder 4d, the drill rod 8 hoisted in the 4 th step is connected with the central output shaft 5d of the drilling machine power head 5, and then the sleeve 6 hoisted in the 4 th step is connected with the peripheral output shaft 5e of the drilling machine power head 5;
as shown in fig. 8f, the prime mover 5c of the drilling machine power head 5 is started, the central output shaft 5d and the peripheral output shaft 5e are driven to respectively drive the drill rod 8 and the sleeve 6 which are spliced into a whole in the 4 th step to rotate in the same axis and opposite directions with different rotating speeds, and the drilling machine power head 5 is driven by the pulling oil cylinder 4d to drive the drill rod 8 and the sleeve 6 to drill downwards to a preset position while rotating;
repeating the steps 4, 5 and 6 until the spliced sleeve and the drill rod are drilled to the design depth of the pile hole;
as shown in fig. 8g, the uppermost sleeve is disconnected with the peripheral output shaft 5e, the whole sleeve is left underground, the drilling machine power head 5 is driven by the pulling and pressing oil cylinder 4d to lift along the upright post 4, the whole drill rod 8 and the drill bit 9 are lifted up, the drill rod section is disconnected with the central output shaft 5d, and the drill rod 8 and the drill bit 9 are sequentially lifted from the hole site;
as shown in fig. 8h, the power head 5 of the drilling machine is driven by the pulling and pressing oil cylinder 4d to lift to the highest position along the upright post 4, the drilling platform 3 is driven by the translation oil cylinder 1d to move backwards along the long ship 1, the reinforcement cage 10 is hoisted into the pile hole of the sleeve protection wall, and concrete 11 is poured;
the drilling platform 3 moves forwards along the long ship 1 under the drive of the translation oil cylinder 1d, the drilling power head 5 is lifted along the upright post 4 under the drive of the pulling and pressing oil cylinder 4d, the whole sleeve 6 and the sleeve drill bit 7 are lifted up, the sleeve section is disconnected with the peripheral force shaft 5e, and the sleeve 6 and the sleeve drill bit 7 are sequentially lifted away from the hole site; drilling of the pile hole is completed together with casting construction.
Repeating the steps 1-10 until the construction of all pile holes is completed.
The depth of each sub-drilling does not exceed the length of the drill pipe 8 and casing 6, and the drilling depth is preferably equal to the length of the drill pipe 8 and casing 6, facilitating subsequent connection of the drill pipe 8 and casing 6.
In the specific construction process, the whole casing 6 and the whole casing bit 7 of the drilling tool, the whole drill rod 8 and the whole drill rod bit 9 can be matched and combined with each other for use as the construction method, and can also be used separately.
The present invention is not limited to the above embodiments, and the technical solutions falling under the concept of the present invention are all within the scope of the present invention, for example, by making some appropriate changes to the structure and combination of the power head or the drilling tool components of the drilling machine, and making some appropriate adjustments to the details of the construction steps, it should be pointed out that, within the scope of the present invention, various drilling machines and corresponding construction methods thereof can be derived, and it should be pointed out that, for those skilled in the art, these improvements and modifications should be considered as the scope of the present invention without departing from the principles of the present invention.
Claims (7)
1. The utility model provides a low headroom double rotary drill, includes rig platform (3), stand (4) and rig unit head (5), its characterized in that:
the drilling machine platform (3) is supported and arranged on two groups of long vessels (1) which are arranged in parallel along the front-back direction of the drilling machine, a translation trolley (1 c) which moves along the front-back direction of the drilling machine is arranged on the long vessels (1), and the drilling machine platform (3) is supported on the translation trolley (1 c);
the stand column (4) is fixedly arranged at the front end of the drilling platform (3), a vertical stand column guide rail (4 b) is arranged on the stand column (4), the drilling machine power head (5) is slidably assembled on the stand column guide rail (4 b) through a stand frame (5 g), and a pulling and pressing oil cylinder (4 d) for driving the drilling machine power head to lift is arranged between the stand column (4) and the stand frame (5 g);
the drilling machine power head (5) comprises a prime motor (5 c), a main speed reducer (5 a), a split speed reducer (5 b), a central power output shaft (5 d) and a peripheral power output shaft (5 e), wherein the prime motor (5 c), the main speed reducer (5 a) and the split speed reducer (5 b) are fixedly arranged on a frame (5 g) and are sequentially connected in series in a transmission manner, the split speed reducer (5 b) is provided with two power output ends which are arranged in the same axis, and the central power output shaft (5 d) and the peripheral power output shaft (5 e) are coaxially arranged and are respectively connected with the two power output ends of the split speed reducer (5 b) in a transmission manner;
the center output shaft (5 d) is detachably connected with the split-type spliced drill rod (8) and the drill rod drill bit (9), and the periphery output shaft (5 e) is detachably connected with the split-type spliced sleeve (6) and the sleeve drill bit (7); the frame (5 g) is slidably assembled on the upright post guide rail (4 b) through a plurality of groups of guide blocks (5 h), and one guide block (5 h) is connected with a pulling and pressing oil cylinder (4 d) arranged on the upright post (4) through a hinged support (4 c); the frame (5 g) is connected with the uppermost guide block (5 h) through a power head hinged support (5 i);
the center output shaft (5 d) and the drill rod (8) and the periphery output shaft (5 e) and the sleeve (6) are detachably assembled through the quick-action taper pin (5 f) respectively; the quick connection of the segmented sleeve (6) and the segmented drill rod (8) can be realized through a quick-action taper pin (5 f) which can be quickly disassembled and assembled;
the sleeves (6) and the drill rods (8) are spliced through connecting taper pins; under the drive of the central output shaft (5 d) and the peripheral output shaft (5 e), the whole between the casing (6) and the casing drill bit (7) and the whole between the drill rod (8) and the drill rod drill bit (9) rotate in opposite directions at the same axis and different rotation speeds respectively to drill.
2. The low headroom dual swing drilling machine of claim 1, wherein: the long ship is characterized in that a long ship base (1 a) of the long ship (1) is provided with a long ship guide rail (1 b) arranged along the front-rear direction of the drilling machine, the translation trolley (1 c) is assembled in a rolling mode along the long ship guide rail (1 b), and the long ship base (1 a) is provided with a translation oil cylinder (1 d) for pushing the translation trolley (1 c) to move.
3. The low headroom dual swing drilling machine of claim 2, wherein: the drilling machine is characterized in that the front end and the rear end of the drilling machine platform (3) are supported and arranged on a short ship (2) vertical to a long ship, a short ship guide rail (2 b) vertical to the long ship guide rail (1 b) is arranged on a short ship base (2 a) of the short ship (2), a transverse moving trolley (2 c) is arranged on the short ship guide rail (2 b), the front end and the rear end of the drilling machine platform (3) are supported on the transverse moving trolley (2 c), and a transverse moving oil cylinder (2 d) for pushing the transverse moving trolley (2 c) to move is arranged on the short ship base (2 a).
4. A low headroom dual swing drilling machine as defined in claim 3, wherein: the platform body (3 a) of the drilling platform (3) is supported on the translation trolley (1 c) of the long ship (1) in a lifting manner through the jacking oil cylinder (3 b), and bottoms of the front end and the rear end of the platform body (3 a) are supported on the traversing trolley (2 c) of the short ship (2) through the rotating base (3 d) and the hinging head (3 c).
5. The low headroom dual rotary drilling machine of any one of claims 1-4, wherein: an operation table (3 f) and a power station (3 e) are arranged on a platform body (3 a) of the drilling machine platform (3).
6. A method of constructing a low headroom dual rotary drilling rig according to any of claims 1-5, characterized by: the method comprises the following steps:
1) The double rotary drilling machine enters one side of a pile position, the drilling platform (3) moves backwards along the long ship (1), the drilling power head (5) is lifted to the highest position along the upright post (4), and the sleeve (6) provided with the sleeve drill bit and the drill rod (8) provided with the drill rod drill bit are respectively hoisted to the pile position and then placed on the ground vertically;
2) The drilling platform (3) moves forwards along the long ship (1), the drilling machine power head (5) descends along the upright post (4), a drilling rod (8) provided with a drilling rod drill bit is connected with a central output shaft (5 d) of the drilling machine power head (5), and a sleeve (6) provided with a sleeve drill bit is connected with a peripheral output shaft (5 e) of the drilling machine power head (5);
3) Starting a drilling machine power head (5), driving a central output shaft (5 d) and a peripheral output shaft (5 e) to respectively drive a drill rod (8) and a sleeve (6) to rotate in the same axis and opposite directions with different rotating speeds, and driving the drilling machine power head (5) by means of a pulling and pressing oil cylinder (4 d) to drive the drill rod (8) and the sleeve (6) to drill downwards to a preset position while rotating;
4) The sleeve (6) and the drill rod (8) in the step 3) are respectively disconnected with a peripheral output shaft (5 e) and a central output shaft (5 d), a drilling machine power head (5) is lifted to the highest position along an upright post (4), a drilling machine platform (3) moves backwards along a long ship (1), and the next group of sleeve (6) without a sleeve drill bit and drill rod (8) without a drill rod drill bit are hoisted to a pile position and are respectively spliced with the sleeve and the drill rod which are drilled into the ground;
5) The drilling platform (3) moves forwards along the long ship (1), the drilling machine power head (5) descends along the upright post (4), the drilling rod (8) hoisted in the 4 th step is connected with the central output shaft (5 d) of the drilling machine power head (5), and the sleeve (6) hoisted in the 4 th step is connected with the peripheral output shaft (5 e) of the drilling machine power head (5);
6) Starting a drilling machine power head (5), driving a central output shaft (5 d) and a peripheral output shaft (5 e) to respectively drive a drill rod (8) and a sleeve (6) which are spliced into a whole in the step 4 to rotate in the same axis and opposite directions at different rotating speeds, and driving the drill rod (8) and the sleeve (6) to drill downwards to a preset position while rotating by the drilling machine power head (5) through a pulling and pressing oil cylinder (4 d);
7) Repeating the steps 4), 5) and 6) until the spliced sleeve and the drill rod are drilled to the design depth of the pile hole;
8) Disconnecting the uppermost sleeve from the peripheral force output shaft (5 e), leaving the sleeve in the ground, lifting the drilling machine power head (5) along the upright post (4), lifting the drill rod and the drill bit in the whole, disconnecting the drill rod section from the central force output shaft (5 d), and hoisting away from the hole site in sequence;
9) The power head (5) of the drilling machine is lifted to the highest position along the upright post (4), the drilling platform (3) moves backwards along the long ship (1), and the reinforcement cage (10) is suspended into the hole to pour the concrete (11);
10 The drilling machine platform (3) moves forwards along the long ship (1), the drilling machine power head (5) is lifted along the upright post (4), the whole sleeve and the sleeve drill bit are lifted up, and the sleeve segments are disconnected with the peripheral output shaft (5 e) and are sequentially lifted away from the hole site; the construction of the pile hole is completed;
11 Repeating the steps 1) to 10) until the construction of all pile holes is completed.
7. The construction method of the low-clearance double-rotary drilling machine, according to claim 6, is characterized in that: the depth of each section drilling of the drill rod (8) and the casing (6) does not exceed the section length of the drill rod (8) and the casing (6).
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| CN109281671B (en) * | 2018-11-16 | 2024-05-07 | 中国铁建重工集团股份有限公司 | Low-clearance vertical shaft tunneling equipment suitable for hard rock stratum |
| CN110410019B (en) * | 2019-08-30 | 2024-02-27 | 宁波中淳高科股份有限公司 | Drilling pile machine with double guide rails and double drilling machines |
| CN110513052A (en) * | 2019-09-20 | 2019-11-29 | 胡建兴 | A kind of construction equipment and construction method of full-casing bored soil grouting pile with pipe |
| CN114264492B (en) * | 2021-12-02 | 2023-11-21 | 中煤科工集团西安研究院有限公司 | Drilling machine pulling and turning composite testing system and method |
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