Drilling rig

Abstract

The utility model provides a drilling rig, which relates to the field of rock-soil exploration and comprises a drilling motor, a transmission gear, a handrail rotating stand, a connecting pipe, a clamping block and a fixed clamping sleeve, a driven gear is welded to the outer side face of a threaded column. The connecting pipe is fixedly connected with the drill pipe; a drilling motor is connected to the upper side face of the movable plate through a bolt, and a motor shaft of the drilling motor is fixedly connected with a drilling shaft through a key; the fixed jacket is hinged with the drill spindle; the transmission gear is welded to the front end of the threaded rod; through the arrangement of a threaded column, a movable plate, a threaded rod, a clamping block, a drilling motor, a drilling pipe and a connecting pipe, pitching turnover angle adjustment of the backrest plate and the seat plate is achieved, the drilling process of the drilling pipe is more stable, and the drilling pipe can be prevented from falling back; the problems that in traditional rock-soil drilling exploration, hammering type drilling vibration is large, a drill pipe is inconvenient to disassemble and assemble, and the drill pipe falls back and is lost are solved.

Description

Technical Field

[0001] The utility model belongs to the field of rock and soil exploration, and more specifically, particularly relates to a drilling device. Background Art

[0002] At present, rock and soil drilling exploration mostly uses hammer drilling equipment for drilling work, that is, the drill pipe is struck by a gravity hammer to force the drill pipe into the soil layer. It can be seen that the hammer drilling method is relatively extensive. The vibration of the hammer on the drill pipe can easily destroy the stratum structure and cause the borehole to collapse, resulting in the failure of drilling exploration. In addition, when the drill pipe is extended or separated and disassembled, it is necessary to manually use a wrench tool to twist, install and dismantle it. The operation process is time-consuming and labor-intensive. During the dismantling process, due to the collapse of the hole in the hole, the drill pipe remaining in the hole in the soil layer will fall back, and even cause the drill pipe to be lost. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a drilling device to solve the problems of large vibration of hammer drilling, inconvenient assembly and disassembly of drill pipe and loss of drill pipe when falling back in traditional rock and soil drilling exploration.

[0004] The utility model provides a drilling device, comprising a top plate and a supporting inclined rod; the top plate and the ladder are welded; the supporting inclined rod is welded to the vertical rod, and the bottom end of the supporting inclined rod is welded to the upper side surface of the bottom frame; the top of the vertical rod is welded to the lower side surface of the top plate, and the bottom end of the vertical rod is welded to the upper side surface of the bottom frame; the top of the vertical rod is welded to the lower side surface of the top plate, and the bottom end of the vertical rod is welded to the upper side surface of the bottom frame; it also includes a lifting motor, a hydraulic cylinder, a ground anchor, a universal wheel, a guide column, a drilling motor, a transmission gear, a handrail rotating frame, a pipe, a clamping block, a bottom plate, a support rod and a fixing sleeve; the lifting motor is connected to the upper side surface of the top plate by bolts, and the motor shaft of the lifting motor is fixedly connected to the driving gear by a key; the driving gear is meshed with the driven gear; the driven gear is welded to the outer side surface of the threaded column; the guide column is in two groups, the top end of the guide column is welded to the lower side surface of the top plate, and the bottom end of the guide column is welded to the upper side surface of the bottom frame; the left and right ends of the bottom plate are welded to the bottom frame; the pipe and the drill pipe are fixed The cam is connected to the bottom surface of the base frame by bolts; the telescopic rod of the hydraulic cylinder is connected to the top of the anchor seat by bolts, and the hydraulic cylinder is fixedly connected to the base frame by bolts; the drilling motor is connected to the upper side of the movable plate by bolts, and the motor shaft of the drilling motor is fixedly connected to the drill shaft by keys; the fixed sleeve is hinged to the drill shaft; the number of the support rods is two groups, and the support rods are symmetrically distributed front and back, and the left and right ends of each group of support rods are respectively welded to the two groups of vertical rods, and a through hole is provided in the center part of the upper side surface of the support rod on the rear side, and the bottom end of the threaded rod is rotatably connected in the through hole of the support rod on the rear side, and a through hole is provided in the center part of the front side surface of the support rod on the front side, and the rotating shaft is rotatably connected in the through hole of the support rod on the front side; the handrail rotating frame is welded and connected to the front end of the rotating shaft; the number of the transmission gears is two groups, and the transmission gear is meshed and connected with the driving gear, and the rear side surface of the transmission gear is welded and connected to the front end of the threaded rod; the driving gear is nested on the outside of the rotating shaft and welded to the rotating shaft.

[0005] In at least some embodiments, there are two groups of fixed jackets, which are symmetrically distributed on the left and right. Each group of fixed jackets is a semi-cylindrical structure with a convex key on the inner side. Each group of fixed jackets has two groups of ear plates symmetrically arranged on the edge of the outer side surface, and each group of ear plates has a through hole.

[0006] In at least some embodiments, the outer side surface of the connecting pipe near the upper end is a flared structure, and the inner side and outer side surface of the flared structure of the connecting pipe near the bottom end are both provided with a threaded structure, and the outer side surface of the flared structure is symmetrically provided with two groups of grooves, and two groups of convex keys of the fixed sleeve can be embedded in the grooves of the connecting pipe.

[0007] In at least some embodiments, the outer side of the drill pipe near the upper end is a flared structure, the inner side of the drill pipe flared structure is provided with threads, the drill pipe and the connecting pipe are screwed together through threaded sealing, and drill teeth are provided at the edge of the bottom end of the drill pipe.

[0008] In at least some embodiments, there are two groups of clamps, each group of clamps is provided with an arc-shaped groove structure, the two groups of clamps are symmetrically distributed front to back, the arc-shaped grooves are attached to the outer side of the drill pipe or the connecting pipe, and each group of clamps is symmetrically provided with two groups of threaded through holes passing through front to back.

[0009] In at least some embodiments, there are two groups of threaded rods, which are symmetrically distributed on the left and right. One end of each group of threaded rods is a forward thread, and the other end is a reverse thread. The forward threaded end of the outer side of the threaded rod is meshed and connected to the threaded through hole of the front clamping block, and the reverse threaded end of the outer side of the threaded rod is meshed and connected to the threaded through hole of the rear clamping block.

[0010] In at least some embodiments, a through hole and a threaded through hole are provided on the side surface of the movable plate, the drill shaft is rotatably connected in the through hole of the movable plate, the threaded column is meshedly connected in the threaded through hole of the movable plate, ear plates are symmetrically provided on the left and right sides of the movable plate, each set of ear plates is provided with a through hole, and the guide column is inserted into the ear plate through hole of the movable plate.

[0011] In at least some embodiments, two groups of through holes are provided on the side surface of the top plate, and the non-threaded surface at the top end of the threaded column and the motor shaft of the lifting motor are respectively inserted into the two groups of through holes of the top plate.

[0012] In at least some embodiments, the base frame is a frame structure, and two sets of foot plates are provided on the front and rear sides of the base frame. Each set of foot plates is provided with a through hole. The hydraulic cylinder is connected to the upper side of the foot plate of the base frame by bolts, and the telescopic rod of the hydraulic cylinder is inserted into the through hole of the foot plate of the base frame.

[0013] In at least some embodiments, the upper side of the anchor seat is provided with two groups of through holes, and the ground fixing rivets can be inserted into the through holes of the anchor seat.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, the lifting motor drives the threaded engagement mechanism composed of the threaded column and the movable plate to operate, so that the movable plate carries the drilling motor and performs a smooth vertical lifting movement along the guide column. The drilling motor drives the drill pipe to advance into the stratum through the fixed jacket hinged on the drill shaft, replacing the original hammer-type drilling exploration, avoiding the loosening of the soil structure in the hole caused by the hammer vibration and causing the hole to collapse, and the drilling process of the drill pipe is smoother.

[0016] 2. In the utility model, the handrail rotating frame drives the gear meshing structure composed of two groups of threaded rods and two groups of clamping blocks through the driving gear and two groups of transmission gears, and drives the threaded meshing mechanism composed of two groups of threaded rods and two groups of clamping blocks to operate, so that the two groups of clamping blocks can clamp and fix the drill pipe or the connecting pipe, thereby reducing the manpower loss during the installation, disassembly and separation process of the drill pipe and the connecting pipe.

[0017] 3. In the utility model, a hydraulic cylinder, an anchor seat and a universal wheel are provided. By utilizing the telescopic action of the telescopic rod of the hydraulic cylinder, the four sets of universal wheels at the bottom end of the frame can be lifted and lowered under the fixed support of the anchor seat, thereby realizing the rapid conversion of the two states of positioning and fixing and transportation and movement of the drilling device, and improving the drilling stability and transportation flexibility of the drilling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the utility model in an upward and side view.

[0020] Figure 3 It is a right-side structural schematic diagram of the utility model.

[0021] Figure 4 It is a front view structural schematic diagram of the utility model.

[0022] Figure 5 It is a schematic diagram of the rear structure of the utility model.

[0023] Figure 6 It is a top view structural schematic diagram of the utility model.

[0024] Figure 7 The utility model Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0025] Figure numerals: 1. top plate; 2. lifting motor; 3. supporting diagonal rod; 4. base frame; 5. hydraulic cylinder; 6. anchor seat; 7. universal wheel; 8. ladder; 9. guide column; 10. threaded column; 11. movable plate; 12. drilling motor; 13. vertical pole; 14. transmission gear; 15. driven gear; 16. driving gear; 17. handrail rotating frame; 18. driving gear; 19. drill pipe; 20. connecting pipe; 21. drill shaft; 22. clamping block; 23. threaded rod; 24. base plate; 25. rotating shaft; 26. support rod; 27. fixed sleeve. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] like Figure 1-7As shown, the utility model provides a drilling device, including a top plate 1 and a supporting diagonal rod 3; the top plate 1 and the ladder 8 are welded and connected; the supporting diagonal rod 3 is welded and connected to the vertical rod 13, and the bottom end of the supporting diagonal rod 3 is welded and connected to the upper side of the bottom frame 4; the top end of the vertical rod 13 is welded and connected to the lower side of the top plate 1, and the bottom end of the vertical rod 13 is welded and connected to the upper side of the bottom frame 4; it also includes a lifting motor 2, a hydraulic cylinder 5, a ground anchor 6, a universal wheel 7, a guide column 9, a drilling motor 12, a transmission gear 14, a handrail rotating frame 17, a pipe 20, a clamping block 22, a bottom The plate 24, the support rod 26 and the fixed jacket 27; the lifting motor 2 is connected to the upper side of the top plate 1 by bolts, and the motor shaft of the lifting motor 2 is fixedly connected to the driving gear 18 by a key; the driving gear 18 is meshed and connected with the driven gear 15; the driven gear 15 is welded and connected to the outer side of the threaded column 10; the guide column 9 is in two groups, and the top end of the guide column 9 is welded and connected to the lower side of the top plate 1; the bottom end of the guide column 9 is welded and connected to the upper side of the bottom frame 4; the left and right ends of the bottom plate 24 are welded and connected to the bottom frame 4; the pipe 20 is fixedly connected to the drill pipe 19; The universal wheel 7 is connected to the lower side of the base frame 4 by bolts; the telescopic rod of the hydraulic cylinder 5 is connected to the top of the anchor seat 6 by bolts, and the hydraulic cylinder 5 is fixedly connected to the base frame 4 by bolts; the drilling motor 12 is connected to the upper side of the movable plate 11 by bolts, and the motor shaft of the drilling motor 12 is fixedly connected to the drill shaft 21 by keys; the fixed jacket 27 is hinged to the drill shaft 21; the number of support rods 26 is two groups, and the support rods 26 are symmetrically distributed front and back. The left and right ends of each group of support rods 26 are respectively welded to the two groups of vertical poles 13, and the center part of the upper side of the rear support rod 26 A through hole is provided, and the bottom end of the threaded rod 23 is rotatably connected in the through hole of the rear support rod 26; a through hole is provided in the center of the front side surface of the front support rod 26, and the rotating shaft 25 is rotatably connected in the through hole of the front support rod 26; the armrest rotating frame 17 is welded and connected to the front end of the rotating shaft 25; specifically, there are two groups of transmission gears 14, the transmission gear 14 is meshed and connected with the driving gear 16, and the rear side surface of the transmission gear 14 is welded and connected to the front end of the threaded rod 23; the driving gear 16 is nested on the outside of the rotating shaft 25, and the driving gear 16 is welded and connected to the rotating shaft 25.

[0028] When the utility model is used for rock drilling exploration, the flared structure of the drill pipe 19 is first placed between the two groups of clamping blocks 22, and the handrail rotating frame 17 is manually rotated, and the handrail rotating frame 17 drives the driving gear 16 welded to the outer side of the rotating shaft 25 to rotate. Since the driving gear 16 and the two groups of transmission gears 14 are meshed with each other, the driving gear 16 drives the two groups of threaded rods 23 welded to the transmission gears 14 to rotate synchronously, and the threaded rods 23 drive the two groups of clamping blocks 22 to move relative to each other through the outer positive threads and reverse threads, so that the drill pipe 19 is clamped between the two groups of clamping blocks 22. At this time, the flared end of the pipe 20 is placed between the fixed jackets 27. When the fixed jackets 27 are clamped and closed by bolts and nuts, the convex key structure of the fixed jackets 27 is docked in the groove on the outer side of the flared end of the pipe 20. At this time, the drilling motor 12 drives the two sets of fixed jackets 27 hinged to the drill shaft 21 to rotate, and the fixed jackets 27 drive the clamped pipe 20 to rotate synchronously. At this time, the lifting motor 2 drives the threaded column 10 welded to the driven gear 15 to rotate through the driving gear 18, and the threaded column 10 drives the movable plate 11 to cooperate with the drilling motor 12 to make the pipe 2 The threaded end of the drill pipe 19 is screwed to the threaded structure on the inner side of the expanded end of the drill pipe 19 to complete the docking installation of the drill pipe 19 and the pipe 20. Then the handrail rotating frame 17 is reversed to loosen the two sets of clamping blocks 22 to loosen the drill pipe 19. At this time, the lifting motor 2 continues to drive the movable plate 11 to move downward. The drill teeth at the bottom of the drill pipe 19 start the ground drilling work under the high-speed rotation of the drilling motor 12. When the expanded end of the pipe 20 reaches between the two sets of clamping blocks 22, if it is necessary to continue to install the pipe 20, the clamping block 22 clamps the pipe 20, and the fixed jacket 27 is disengaged. The connecting pipe 20 is lifted up along with the movable plate 11, and then the new connecting pipe 20 is installed between the fixed jackets 27 and connected. If it is no longer necessary to install the connecting pipe 20 and the drilling work is completed, the lifting motor 2 drives the movable plate 11 to lift, and the connecting pipe 20 and the drill pipe 19 are lifted up synchronously along with the movable plate 11 and carry the soil layer samples back to the surface. When the flared end of the drill pipe 19 returns to between the two groups of clamps 22, the two groups of clamps 22 clamp the drill pipe 19 again, and the drilling motor 12 drives the connecting pipe 20 to reverse, completing the separation of the connecting pipe 20 and the drill pipe 19.

[0029] In the disclosed embodiment, there are two groups of fixing sleeves 27, which are symmetrically distributed on the left and right sides. Each group of fixing sleeves 27 is a semi-cylindrical structure with a convex key on the inner side. Each group of fixing sleeves 27 is symmetrically provided with two groups of ear plates at the edge position of the outer side surface. Each group of ear plates is provided with through holes. The two groups of fixing sleeves 27 are connected and closed by nuts and bolts through the through hole structure to complete the clamping and fixing work of the two groups of fixing sleeves 27 on the butt pipe 20 or the drill pipe 19.

[0030] In the disclosed embodiment, the outer side surface of the connecting pipe 20 near the upper end is a flared structure, and the inner side and the outer side surface near the bottom end of the flared structure of the connecting pipe 20 are both provided with a threaded structure, and the outer side surface of the flared structure is symmetrically provided with two groups of grooves, and the convex keys of the two groups of fixed sleeves 27 can be embedded in the grooves of the connecting pipe 20, and the fixed sleeve 27 drives the connecting pipe 20 to rotate through the convex keys.

[0031] In the disclosed embodiment, the outer side surface of the drill pipe 19 near the upper end is a flared structure, and a thread is provided on the inner side of the flared structure of the drill pipe 19. The drill pipe 19 and the connecting pipe 20 are screwed together through a threaded seal to achieve an extended combination of the drill pipe 19 and the connecting pipe 20. Drill teeth are provided at the edge of the bottom end of the drill pipe 19 to facilitate the drill pipe 19 to perform crushing drilling on rock and soil.

[0032] In the disclosed embodiment, there are two groups of clamping blocks 22, each group of clamping blocks 22 is provided with an arc-shaped groove structure, the two groups of clamping blocks 22 are symmetrically distributed front to back, the arc-shaped grooves are fitted on the outer side of the drill pipe 19 or the connecting pipe 20, and each group of clamping blocks 22 is symmetrically provided with two groups of threaded through holes that pass through front to back.

[0033] In the embodiment of the present disclosure, there are two groups of threaded rods 23, and the two groups of threaded rods 23 are symmetrically distributed on the left and right. One end of each group of threaded rods 23 is a forward thread, and the other end is a reverse thread. The forward threaded end of the outer side of the threaded rod 23 is meshed and connected to the threaded through hole of the front clamp 22, and the reverse threaded end of the outer side of the threaded rod 23 is meshed and connected to the threaded through hole of the rear clamp 22. The threaded rods 23 can simultaneously drive the two groups of clamps 22 to move in opposite directions, so that the two groups of clamps 22 clamp and fix the drill pipe 19 and the connecting pipe 20.

[0034] In the disclosed embodiment, a through hole and a threaded through hole are provided on the upper side surface of the movable plate 11, the drill shaft 21 is rotatably connected in the through hole of the movable plate 11, the threaded column 10 is meshedly connected in the threaded through hole of the movable plate 11, and ear plates are symmetrically provided on the left and right sides of the movable plate 11. Each group of ear plates is provided with a through hole, and the guide column 9 is inserted into the ear plate through hole of the movable plate 11. The threaded column 10 drives the drill shaft 21 carried by the movable plate 11 to move vertically up and down, so that the drill pipe 19 and the connecting pipe 20 can stably penetrate into the formation.

[0035] In the disclosed embodiment, two groups of through holes are provided on the upper side of the top plate 1, and the unthreaded surface at the top of the threaded column 10 and the motor shaft of the lifting motor 2 are respectively inserted into the two groups of through holes of the top plate 1. The top plate 1 uses the through holes to cooperate with the central through hole of the support rod 26 to rotatably support the threaded column 10.

[0036] In the disclosed embodiment, the base frame 4 is a frame structure, and two groups of foot plates are provided on the front and rear sides of the base frame 4. Each group of foot plates is provided with a through hole. The hydraulic cylinder 5 is connected to the upper side of the foot plate of the base frame 4 by bolts, and the telescopic rod of the hydraulic cylinder 5 is inserted into the through hole of the foot plate of the base frame 4. The telescopic rod of the hydraulic cylinder 5 is extended and retracted up and down in the through hole of the foot plate of the base frame 4, so that the universal wheel 7 can be separated from or contacted with the ground, thereby realizing the conversion of the mobile state and the static fixed state of the drilling device.

[0037] In the disclosed embodiment, two groups of through holes are provided on the upper side of the anchor seat 6, and ground fixing rivets can be inserted into the through holes of the anchor seat 6 to fix the drilling device on the ground and prevent the drilling device from being displaced during the drilling process.

[0038] The installation, connection or setting methods of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc., and the specific structures, models and coefficient indicators of all its components are its own technology, as long as it can achieve its beneficial effects, it can be implemented. The lifting motor 2, hydraulic cylinder 5, universal wheel 7, and drilling motor 12 used above are all common components on the market. When you buy them back and use them, you only need to connect them according to the instruction manual purchased together, so I will not repeat them here.

[0039] The technical solution of the present invention is not limited to the scope of the embodiments of the present invention, and the technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. A drilling device, comprising a top plate and a supporting inclined rod; the top plate is welded to a ladder; the supporting inclined rod is welded to a vertical rod, and the bottom end of the supporting inclined rod is welded to the upper side of a bottom frame; the top end of the vertical rod is welded to the lower side of the top plate, and the bottom end of the vertical rod is welded to the upper side of the bottom frame; characterized in that: It also includes a lifting motor, a hydraulic cylinder, an anchor seat, a universal wheel, a guide column, a drilling motor, a transmission gear, a handrail rotating frame, a pipe, a clamping block, a base plate, a support rod and a fixed jacket; the motor shaft of the lifting motor is fixedly connected to the driving gear through a key; the driving gear is meshed with the driven gear; the driven gear is welded to the outer side of the threaded column; the guide columns are in two groups, the top ends of the guide columns are welded to the lower side of the top plate, and the bottom ends of the guide columns are welded to the upper side of the base frame; the left and right ends of the base plate are welded to the base frame; the pipe is fixedly connected to the drill pipe; the telescopic rod of the hydraulic cylinder is connected to the top of the anchor seat by bolts, and the drilling motor is connected to the movable plate by bolts. On the upper side, the motor shaft of the drilling motor is fixedly connected to the drill shaft by a key; the fixed sleeve is hinged to the drill shaft; there are two groups of support rods, which are symmetrically distributed front and back, and the left and right ends of each group of support rods are respectively welded and connected to the two groups of vertical poles, and a through hole is provided at the center of the upper side of the rear support rod, and the bottom end of the threaded rod is rotatably connected in the through hole of the rear support rod, and a through hole is provided at the center of the front side of the front support rod, and the rotating shaft is rotatably connected in the through hole of the front support rod; the handrail rotating frame is welded and connected to the front end of the rotating shaft; there are two groups of transmission gears, which are meshed and connected with the driving gear, and the rear side of the transmission gear is welded and connected to the front end of the threaded rod; the driving gear is nested on the outside of the rotating shaft.

2. A drilling device as claimed in claim 1, characterized in that: There are two groups of fixed jackets, each group of fixed jackets is a semi-cylindrical structure, a convex key is arranged on the inner side of the semi-cylindrical structure, and two groups of ear plates are symmetrically arranged on the edge position of the outer side surface of each group of fixed jackets.

3. A drilling device as claimed in claim 2, characterized in that: The outer side surface of the pipe is a flared structure near the upper end, and the inner side and outer side surface of the flared structure of the pipe near the bottom end are both provided with threaded structures. The outer side surface of the flared structure is symmetrically provided with two groups of grooves, and two groups of convex keys for fixing the jacket are embedded in the grooves of the pipe.

4. A drilling device as claimed in claim 1, characterized in that: The outer side of the drill pipe near the upper end is a flared structure, the inner side of the drill pipe flared structure is provided with threads, the drill pipe and the connecting pipe are screwed together through thread sealing, and drill teeth are provided at the edge of the bottom end of the drill pipe.

5. A drilling device as claimed in claim 1, characterized in that: There are two groups of clamping blocks, each group of which is provided with an arc-shaped groove structure. The two groups of clamping blocks are symmetrically distributed front to back, and the arc-shaped grooves are fitted on the outer side of the drill pipe or the connecting pipe. Each group of clamping blocks is symmetrically provided with two groups of threaded through holes that penetrate front to back.

6. A drilling device according to claim 1, characterized in that: There are two groups of threaded rods, which are symmetrically distributed on the left and right. One end of each group of threaded rods is a forward thread, and the other end is a reverse thread. The forward threaded end on the outer side of the threaded rod is meshed and connected to the threaded through hole of the front clamping block, and the reverse threaded end on the outer side of the threaded rod is meshed and connected to the threaded through hole of the rear clamping block.

7. A drilling device according to claim 1, characterized in that: The movable plate has a through hole and a threaded through hole on the side surface, the drill shaft is rotatably connected in the through hole of the movable plate, the threaded column is meshed and connected in the threaded through hole of the movable plate, ear plates are symmetrically arranged on the left and right sides of the movable plate, each set of ear plates is provided with a through hole, and the guide column is inserted in the ear plate through hole of the movable plate.

8. A drilling device as claimed in claim 1, characterized in that: The top plate is provided with two groups of through holes on the side surface, and the non-threaded surface at the top end of the threaded column and the motor shaft of the lifting motor are respectively inserted into the two groups of through holes of the top plate.

9. A drilling device as claimed in claim 1, characterized in that: The upper side of the anchor seat is provided with two groups of through holes, and the ground fixing rivets can be inserted into the through holes of the anchor seat.

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