Coal field exploration drilling equipment

Abstract

The invention discloses drilling equipment for coal field exploration. The drilling equipment comprises a mounting frame and a lifting frame. According to the drill bit, the standard drill pipe and the drill bit pipe which can be spliced are adopted, the outer surfaces of the standard drill pipe and the drill bit pipe are each provided with a chip groove and an internal thread groove, the chip grooves are used for discharging chips generated during drilling in the drilling process, and the internal thread grooves increase the friction force with soil layers located in the standard drill pipe and the drill bit pipe; a worker can reasonably increase or decrease the length of the standard drill pipe according to the drilling depth, the application range is wider, use is more convenient, the protruding points arranged on the bottom face of the drill pipe smash the soil layer in the rotating process of the drill pipe, continuous soil breaking and drilling are facilitated, and the drilling efficiency is improved. The drill bit is simple in structure and convenient to operate, has high crushing capacity especially for a hard coal seam, improves the drilling and sampling efficiency, soil layer samples are located in the standard drill pipe and the drill bit pipe, the distribution state of the soil layer samples is not changed, exploration and analysis of workers are greatly facilitated, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coalfield exploration, and in particular to a coalfield exploration drilling device. Background Art

[0002] During coalfield exploration, it is necessary to drill holes in the soil layer for sampling, and determine the direction of the coalfield by the distribution of the soil layer to provide data for subsequent coal mining. After searching, it was found that the patent with application number CN202322067292.8 proposed that the current sampling device for coalfield exploration needs to lift the sampling barrel back to the ground when exploring the coalfield. After the soil in the sampling barrel is cleaned out, the sampling barrel is drilled into the ground again. Through reciprocating operation, the sampling barrel is drilled to a predetermined depth. However, in the above process, the sampling barrel needs to repeatedly enter the underground and move to the ground, which has the disadvantages of low sampling efficiency and cumbersome sampling steps. The application can drive the drilling part to drill holes in the ground through the provided driving mechanism, and can pass the crushed soil or coal mine samples to the outside through the export channel.

[0003] The existing technology has the following problems:

[0004] 1. Even if the crushed soil is exported to the outside through the channel, it is difficult for the staff to directly or indirectly distinguish the distribution characteristics of the soil layer because its soil layer distribution is destroyed, which affects the accuracy of the exploration results.

[0005] 2. The sleeve and auger are difficult to lengthen and cannot adapt to drilling work of different depths. The adaptability range is small and further improvements can be made.

[0006] 3. When the drilling depth is large, the traditional sampling tube needs to be disassembled and pulled out in sections, and manual assistance is required. Since the sampling tube is heavy when it is long, manual assistance is very troublesome to pull it out, and further improvements can be made.

[0007] To this end, we proposed a coalfield exploration drilling equipment to solve the above-mentioned drawbacks. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a coalfield exploration drilling device.

[0009] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a coalfield exploration drilling equipment, including a mounting frame and a lifting frame, the surface of the mounting frame is slidably sleeved with a sliding sleeve, and the lifting frame is fixedly connected between the sliding sleeves, and a first electric cylinder is fixedly installed on the top surface of the lifting frame, a motor box is fixedly installed on the bottom surface of the moving rod of the first electric cylinder, and the motor box is fixedly connected to the top surface of the lifting frame, and a driving motor is fixedly installed inside the motor box, a connector is installed at the output end of the driving motor, and the connector is fixedly connected to a standard drill pipe by a fixing bolt, and the standard drill pipe is fixedly connected to a drill pipe by a fixing bolt, a convex point is opened on the bottom surface of the drill pipe, and a chip removal groove is opened on the outer surface of the drill pipe and the standard drill pipe, and an internal thread groove is opened on the inner surface of the drill pipe and the standard drill pipe, the lifting frame and the mounting frame are respectively opened with a first through hole and a second through hole, and a clamp is fixedly installed below the first through hole and above the second through hole respectively on the bottom surface of the mounting frame and the top surface of the lifting frame, and a second electric cylinder is fixedly installed on the surface of the clamp, and a clamp block is fixedly installed on the other end of the moving rod of the second electric cylinder.

[0010] Preferably, a first slider is fixedly installed on the bottom surface of one end of the mounting frame, and a second slider is fixedly installed on the bottom surface of the other end of the mounting frame, the surfaces of the first slider and the second slider are respectively penetrated by a first guide rod and a second guide rod for sliding connection, and the first end block and the second end block are respectively fixedly installed at both ends of the first slider and the second slider, and the first base and the second base are respectively fixedly installed on the bottom surfaces of the first end block and the second end block, a screw rod is penetrated and rotatably connected on the surface of the second end block, and the screw rod penetrates the second slider and is threadedly connected to the second slider, and one end of the screw rod is fixedly connected to a handwheel.

[0011] Preferably, a bolt hole is provided on the surface of the plug block, a bolt groove is provided on the outer side of the plug hole corresponding to the bolt hole on the surface of the standard drill pipe and the drill bit tube, and a fixing bolt is installed inside the bolt groove, and the fixing bolt passes through the bolt hole and is threadedly connected to the bolt hole.

[0012] Preferably, the bottom surface of the first sliding block is in sliding contact with the top surface of the first base.

[0013] Preferably, the bottom surface of the second sliding block is in sliding contact with the top surface of the second base.

[0014] Preferably, the clamp block is an arc-shaped structure, and the inner wall of the clamp block is roughened.

[0015] Preferably, the surface of the motor box is provided with heat dissipation holes, and the heat dissipation holes are densely distributed.

[0016] Preferably, the convex points are of pyramidal structure, and the convex points are evenly and densely distributed.

[0017] Preferably, the first through hole and the second through hole have the same diameter, and the diameter of the first through hole is larger than the outer diameter of a standard drill pipe.

[0018] Preferably, the first electric cylinder and the second electric cylinder are both used in conjunction with a controller, and an output terminal of the controller is electrically connected to the first electric cylinder and the second electric cylinder respectively.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) The present invention adopts a splicable standard drill pipe and drill bit pipe. The standard drill pipe is fixedly connected to the connecting head by a fixing bolt, and the standard drill pipe is fixedly connected to the drill bit pipe by a fixing bolt. The outer surfaces of the standard drill pipe and the drill bit pipe are respectively provided with a chip removal groove and an internal thread groove. The chip removal groove is used to discharge the debris during drilling. The internal thread groove increases the friction with the soil layer inside the standard drill pipe and the drill bit pipe, which is convenient for later removal of the soil layer samples inside the standard drill pipe and the drill bit pipe. The staff can reasonably increase or decrease the length of the standard drill pipe according to the drilling depth, which has a wider range of use and is more convenient to use. At the same time, the convex points provided on the bottom surface of the drill bit pipe crush the soil layer during the rotation of the drill bit pipe, which is convenient for continuous ground breaking and drilling. In particular, it has a higher crushing ability for harder coal seams, thereby improving the drilling sampling efficiency. The soil layer samples are located inside the standard drill pipe and the drill bit pipe, and the distribution state of the soil layer samples is not changed, which greatly facilitates the exploration and analysis of the staff and improves the work efficiency.

[0021] (2) The present invention adopts two groups of chucks, one of which is installed on the bottom surface of the lifting frame, and the other group of chucks is installed on the top surface of the mounting frame. After drilling is completed, the staff can remove the connection between the connector and the standard drill pipe, and then drive the screw to rotate by turning the hand wheel, thereby driving the mounting frame to move, and move the chuck to the top of the standard drill pipe. Then, the lifting frame can be pushed down by extending the first electric cylinder, so that the standard drill pipe passes through the chuck. Then, the second electric cylinders on both sides of the chuck at the bottom extend to push the clamping block at the bottom to clamp the standard drill pipe. Then, the first electric cylinder is shortened. The standard drill pipe can be pulled up, and after the lifting frame is lifted to the limit, the second electric cylinders on both sides of the upper clamping barrel extend, pushing the clamping block at the top to clamp the standard drill pipe, and the second electric cylinder at the bottom shortens, and the lifting frame moves down for the second time. After the clamping block at the bottom clamps the outer wall of the standard drill pipe, the clamping block at the top can release the clamping, and continue to complete the standard drill pipe pulling-up operation until the standard drill pipe and drill bit pipe are completely pulled out. The device can easily pull out the standard drill pipe and drill bit pipe, facilitates the removal of internal soil layer samples, saves the trouble of manual pipe pulling, and improves the convenience of use and work efficiency.

[0022] (3) The present invention adopts an insert block and a socket. The insert block is provided on the bottom surface of the standard drill pipe and the connector, and the socket is provided on the top surface of the standard drill pipe and the drill bit tube. When connecting, the staff can insert the insert block into the socket and screw the fixing bolt into the bolt groove to connect the insert block and the socket. Since the positions of the insert block and the socket correspond to each other, the continuity of the chip groove and the internal thread groove is guaranteed after docking, which is convenient for positioning and assembly, and further improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.

[0024] Figure 1 A schematic diagram of the internal structure of a coalfield exploration drilling device proposed by the present invention;

[0025] Figure 2 A front view of a coalfield exploration drilling device proposed by the present invention;

[0026] Figure 3 A schematic diagram of the external structure of a coalfield exploration drilling device proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the lifting frame proposed by the present invention;

[0028] Figure 5 This is an enlarged view of the A node of a coalfield exploration drilling device proposed by the present invention;

[0029] Figure 6 This is an enlarged view of the B node of a coalfield exploration drilling device proposed by the present invention;

[0030] Figure 7 A schematic diagram of the structure of the drill bit tube proposed by the present invention;

[0031] Figure 8 This is a schematic structural diagram of the clamping block proposed in the present invention.

[0032] Legend:

[0033] 1. Mounting frame; 2. Sliding sleeve; 3. Lifting frame; 4. First base; 5. First slider; 6. First end block; 7. First guide rod; 8. Second base; 9. Second slider; 10. Second end block; 11. Second guide rod; 12. Screw; 13. Handwheel; 14. First electric cylinder; 15. Motor box; 16. Drive motor; 17. Connector; 18. Standard drill pipe; 19. Drill pipe; 20. Chip groove; 21. Internal thread groove; 22. Clamp; 23. Second electric cylinder; 24. Clamp; 25. First through hole; 26. Second through hole; 27. Heat dissipation hole; 28. Bump; 29. ​​Insert; 30. Bolt groove; 31. Socket; 32. Fixing bolt. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0035] Please refer to Figure 1-8 A coalfield exploration drilling device comprises a mounting frame 1 and a lifting frame 3, wherein a sliding sleeve 2 is slidably sleeved on the surface of the mounting frame 1, one end of the mounting frame 1 is bent outward, and the lifting frame 3 is fixedly connected between the sliding sleeves 2, and a first electric cylinder 14 is fixedly mounted on the top surface of the lifting frame 3, a motor box 15 is fixedly mounted on the bottom surface of the moving rod of the first electric cylinder 14, and the motor box 15 is fixedly connected to the top surface of the lifting frame 3, and a driving motor 16 is fixedly mounted inside the motor box 15, a connector 17 is mounted on the output end of the driving motor 16, and the connector 17 is fixedly connected to a standard drill pipe 18 through a fixing bolt 32, and the standard drill pipe 18 is fixed by the fixing bolt 32 A drill tube 19 is connected, and the standard drill tube 18 is determined according to the drilling depth. A convex point 28 is provided on the bottom surface of the drill tube 19, and a chip groove 20 is provided on the outer surfaces of the drill tube 19 and the standard drill tube 18, and an internal thread groove 21 is provided on the inner surfaces of the drill tube 19 and the standard drill tube 18. The surfaces of the lifting frame 3 and the mounting frame 1 are respectively provided with a first through hole 25 and a second through hole 26, and a clamp 22 is fixedly installed below the first through hole 25 and above the second through hole 26 on the bottom surface of the mounting frame 1 and the top surface of the lifting frame 3, respectively, and a second electric cylinder 23 is fixedly installed on the surface of the clamp 22, and a clamp block 24 is fixedly installed on the other end of the moving rod of the second electric cylinder 23.

[0036] In this embodiment, the standard drill pipe 18 is fixedly connected to the connector 17 by a fixing bolt 32, and the standard drill pipe 18 is fixedly connected to the drill pipe 19 by a fixing bolt 32. The outer surfaces of the standard drill pipe 18 and the drill pipe 19 are respectively provided with a chip groove 20 and an internal thread groove 21. The chip groove 20 is used to discharge the debris during drilling, and the internal thread groove 21 increases the friction with the soil layer inside the standard drill pipe 18 and the drill pipe 19, so as to facilitate the later removal of the soil layer samples inside the standard drill pipe 18 and the drill pipe 19. The staff can reasonably increase or decrease the standard according to the drilling depth. The length of the drill pipe 18 has a wider range of uses and is more convenient to use. At the same time, the convex point 28 on the bottom surface of the drill pipe 19 crushes the soil layer during the rotation of the drill pipe 19, which is convenient for continuous soil breaking and drilling, especially for harder coal seams. It has a higher crushing ability and improves the efficiency of drilling sampling. The soil layer samples are located inside the standard drill pipe 18 and the drill pipe 19, and the distribution state of the soil layer samples is not changed, which greatly facilitates the exploration and analysis of the staff and improves the work efficiency. At the same time, one group of the clamps 22 is installed on the bottom surface of the lifting frame 3, and the other group of the clamps 22 is installed on the top surface of the mounting frame 1. The drilling is completed. After that, the staff can remove the connection between the connector 17 and the standard drill pipe 18, and then drive the screw 12 to rotate by turning the hand wheel 13, thereby driving the mounting frame 1 to move, and move the clamp 22 to just above the standard drill pipe 18. Then, the first electric cylinder 14 can be extended to push the lifting frame 3 downward, so that the standard drill pipe 18 passes through the clamp 22. Then, the second electric cylinders 23 on both sides of the clamp 22 below are extended to push the clamp block 24 below to clamp the standard drill pipe 18. Then, the first electric cylinder 14 is shortened to pull the standard drill pipe 18 upward. After the lifting frame 3 is lifted to the limit, the standard drill pipe 18 is pulled upward. The second electric cylinders 23 on both sides of the upper clamping tube 22 extend, pushing the clamping block 24 located at the top to clamp the standard drill pipe 18, and the second electric cylinder 23 located at the bottom shortens, and the lifting frame 3 moves down for the second time. After the clamping block 24 located at the bottom clamps the outer wall of the standard drill pipe 18, the clamping block 24 located at the top can release the clamping, and continue to complete the pulling-up operation of the standard drill pipe 18 until the standard drill pipe 18 and the drill bit tube 19 are completely pulled out. The device can easily pull out the standard drill pipe 18 and the drill bit tube 19, which is convenient for taking out the internal soil layer samples, eliminating the trouble of manual pulling out, and improving the convenience of use and work efficiency.

[0037] Specifically, a first slider 5 is fixedly installed on the bottom surface of one end of the mounting frame 1, and a second slider 9 is fixedly installed on the bottom surface of the other end of the mounting frame 1, and a first guide rod 7 and a second guide rod 11 are respectively penetrated and slidably connected on the surfaces of the first slider 5 and the second slider 9, and a first end block 6 and a second end block 10 are respectively fixedly installed on both ends of the first slider 5 and the second slider 9, and a first base 4 and a second base 8 are respectively fixedly installed on the bottom surfaces of the first end block 6 and the second end block 10, a screw rod 12 is penetrated and rotatably connected on the surface of the second end block 10, and the screw rod 12 penetrates the second slider 9 and is threadedly connected to the second slider 9, and a hand wheel 13 is fixedly connected at one end of the screw rod 12.

[0038] In this embodiment, the staff can rotate the hand wheel 13 to drive the screw rod 12 to rotate, thereby driving the first slider 5 and the second slider 9 to move, thereby changing the position of the mounting frame 1.

[0039] Specifically, a bolt hole is opened on the surface of the plug block 29, and a bolt groove 30 is opened on the outside of the plug hole 31 and on the surface of the standard drill pipe 18 and the drill bit pipe 19 corresponding to the bolt hole, and a fixing bolt 32 is installed inside the bolt groove 30, and the fixing bolt 32 passes through the bolt hole and is threadedly connected to the bolt hole.

[0040] In this embodiment: the bolt groove 30 is convenient for accommodating the end cap of the fixing bolt 32, the plug block 29 is opened on the bottom surface of the standard drill pipe 18 and the connecting head 17, and the socket 31 is opened on the top surface of the standard drill pipe 18 and the drill bit tube 19. When connecting, the staff can insert the plug block 29 into the socket 31, and screw the fixing bolt 32 into the bolt groove 30 to connect the plug block 29 and the socket 31. Since the distribution positions of the plug block 29 and the socket 31 correspond to each other up and down, the continuity of the chip groove 20 and the internal thread groove 21 is guaranteed after docking, which is convenient for positioning and assembly, and further improves the convenience of use.

[0041] Specifically, the bottom surface of the first sliding block 5 is in sliding contact with the top surface of the first base 4 .

[0042] In this embodiment, the first base 4 plays a supporting role, and the first sliding block 5 abuts against the first base 4 and also plays a supporting role.

[0043] Specifically, the bottom surface of the second sliding block 9 is in sliding contact with the top surface of the second base 8 .

[0044] In this embodiment, the second sliding block 9 plays an adjusting role to facilitate the movement of the mounting frame 1 .

[0045] Specifically, the clamp block 24 is an arc-shaped structure, and the inner wall of the clamp block 24 is roughened.

[0046] In this embodiment, the clamping block 24 with a rough inner wall improves the friction force of clamping, thereby improving the stability of clamping.

[0047] Specifically, heat dissipation holes 27 are formed on the surface of the motor box 15 , and the heat dissipation holes 27 are densely distributed.

[0048] In this embodiment, the heat dissipation holes 27 facilitate heat dissipation of the drive motor 16 .

[0049] Specifically, the protrusions 28 are of a pyramidal structure, and the protrusions 28 are evenly and densely distributed.

[0050] In this embodiment, the protrusion 28 is a common structure of a drilling drill, which is convenient for breaking the coating by rotation.

[0051] Specifically, the first through hole 25 and the second through hole 26 have the same diameter, and the diameter of the first through hole 25 is larger than the outer diameter of the standard drill pipe 18 .

[0052] In this embodiment, the first through hole 25 and the second through hole 26 facilitate the movement of the standard drill tube 18 and the drill bit tube 19 .

[0053] Specifically, the first electric cylinder 14 and the second electric cylinder 23 are both used in conjunction with a controller, and the output end of the controller is electrically connected to the first electric cylinder 14 and the second electric cylinder 23 respectively.

[0054] In this embodiment: the controller is a common control structure in the art, which is convenient for staff to operate.

[0055] Working principle: During operation, the standard drill pipe 18 is fixedly connected to the connector 17 by means of fixing bolts 32, and the standard drill pipe 18 is fixedly connected to the drill pipe 19 by means of fixing bolts 32. The outer surfaces of the standard drill pipe 18 and the drill pipe 19 are respectively provided with a chip groove 20 and an internal thread groove 21. The chip groove 20 is used to discharge the debris during drilling, and the internal thread groove 21 increases the friction with the soil layer inside the standard drill pipe 18 and the drill pipe 19, so as to facilitate the later removal of the soil layer samples inside the standard drill pipe 18 and the drill pipe 19. The staff can The length of the standard drill pipe 18 is reasonably increased or decreased according to the drilling depth, and the use range is wider and more convenient. At the same time, the convex point 28 on the bottom surface of the drill pipe 19 crushes the soil layer during the rotation of the drill pipe 19, which is convenient for continuous soil breaking and drilling, especially for harder coal seams. It has a higher crushing ability and improves the drilling sampling efficiency. The soil layer samples are located inside the standard drill pipe 18 and the drill pipe 19, and the distribution state of the soil layer samples is not changed, which greatly facilitates the exploration and analysis of the staff and improves the work efficiency. At the same time, after the drilling is completed, the staff can remove the connector 17 and the standard The drill pipe 18 is connected, and then the screw rod 12 is driven to rotate by turning the hand wheel 13, thereby driving the mounting frame 1 to move, and the clamping barrel 22 is moved to the top of the standard drill pipe 18. Then, the first electric cylinder 14 is extended to push the lifting frame 3 downward, so that the standard drill pipe 18 passes through the clamping barrel 22. Then, the second electric cylinders 23 on both sides of the clamping barrel 22 at the bottom are extended to push the clamping block 24 at the bottom to clamp the standard drill pipe 18. Then, the first electric cylinder 14 is shortened to pull the standard drill pipe 18 upward. After the lifting frame 3 is lifted to the limit, the clamping barrel 22 at the top is The second electric cylinder 23 on the side is extended, pushing the clamping block 24 located above to clamp the standard drill pipe 18, and the second electric cylinder 23 located below is shortened, and the lifting frame 3 moves down for the second time. After the clamping block 24 located below clamps the outer wall of the standard drill pipe 18, the clamping block 24 located above can release the clamping, and continue to complete the pulling-up operation of the standard drill pipe 18 until the standard drill pipe 18 and the drill bit tube 19 are completely pulled out. The device can easily pull out the standard drill pipe 18 and the drill bit tube 19, which is convenient for taking out the internal soil layer samples, eliminating the trouble of manual pulling out of the pipe, and improving the convenience of use and work efficiency.

[0056] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A coalfield exploration drilling device, comprising a mounting frame (1) and a lifting frame (3), characterized in that: The surface of the mounting frame (1) is slidably sleeved with a sliding sleeve (2), and a lifting frame (3) is fixedly connected between the sliding sleeves (2), and a first electric cylinder (14) is fixedly installed on the top surface of the lifting frame (3), and a motor box (15) is fixedly installed on the bottom surface of the moving rod of the first electric cylinder (14), and the motor box (15) is fixedly connected to the top surface of the lifting frame (3), and a driving motor (16) is fixedly installed inside the motor box (15), and a connector (17) is installed at the output end of the driving motor (16), and the connector (17) is fixedly connected to a standard drill pipe (18) through a fixing bolt (32), and the standard drill pipe (18) is fixedly connected to a drill pipe (19) through a fixing bolt (32), and the The bottom surface of the drill tube (19) is provided with a convex point (28), and the outer surfaces of the drill tube (19) and the standard drill tube (18) are provided with a chip removal groove (20), and the inner surfaces of the drill tube (19) and the standard drill tube (18) are provided with an internal thread groove (21), the surfaces of the lifting frame (3) and the mounting frame (1) are respectively provided with a first through hole (25) and a second through hole (26), and a clamping cylinder (22) is fixedly installed below the first through hole (25) and above the second through hole (26) on the bottom surface of the mounting frame (1) and the top surface of the lifting frame (3), respectively, and a second electric cylinder (23) is fixedly installed on the surface of the clamping cylinder (22), and a clamping block (24) is fixedly installed on the other end of the moving rod of the second electric cylinder (23).

2. A coalfield exploration drilling equipment according to claim 1, characterized in that: A first slider (5) is fixedly mounted on the bottom surface of one end of the mounting frame (1), and a second slider (9) is fixedly mounted on the bottom surface of the other end of the mounting frame (1); a first guide rod (7) and a second guide rod (11) are respectively slidably connected through the surfaces of the first slider (5) and the second slider (9); a first end block (6) and a second end block (10) are respectively fixedly mounted on both ends of the first slider (5) and the second slider (9); a first base (4) and a second base (8) are respectively fixedly mounted on the bottom surfaces of the first end block (6) and the second end block (10); a screw rod (12) is rotatably connected through the surface of the second end block (10); the screw rod (12) passes through the second slider (9) and is threadedly connected to the second slider (9); and a hand wheel (13) is fixedly connected to one end of the screw rod (12).

3. A coalfield exploration drilling equipment according to claim 1, characterized in that: The insert block (29) has a bolt hole on its surface, and a bolt groove (30) is formed on the outside of the insert hole (31) and on the surface of the standard drill pipe (18) and the drill bit pipe (19) corresponding to the bolt hole, and a fixing bolt (32) is installed inside the bolt groove (30), and the fixing bolt (32) passes through the bolt hole and is threadedly connected to the bolt hole.

4. A coalfield exploration drilling equipment according to claim 1, characterized in that: The bottom surface of the first sliding block (5) is in sliding contact with the top surface of the first base (4).

5. The coalfield exploration drilling equipment according to claim 1, characterized in that: The bottom surface of the second sliding block (9) is in sliding contact with the top surface of the second base (8).

6. The coalfield exploration drilling equipment according to claim 1, characterized in that: The clamping block (24) is an arc-shaped structure, and the inner wall of the clamping block (24) is roughened.

7. The coalfield exploration drilling equipment according to claim 1, characterized in that: The surface of the motor box (15) is provided with heat dissipation holes (27), and the heat dissipation holes (27) are densely distributed.

8. The coalfield exploration drilling equipment according to claim 1, characterized in that: The convex points (28) are of pyramidal structure, and the convex points (28) are evenly and densely distributed.

9. The coalfield exploration drilling equipment according to claim 1, characterized in that: The first through hole (25) and the second through hole (26) have the same diameter, and the diameter of the first through hole (25) is larger than the outer diameter of the standard drill pipe (18).

10. The coalfield exploration drilling equipment according to claim 1, characterized in that: The first electric cylinder (14) and the second electric cylinder (23) are both used in conjunction with a controller, and the output end of the controller is electrically connected to the first electric cylinder (14) and the second electric cylinder (23) respectively.

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