Portable small drilling device for geological exploration

Abstract

The invention relates to the technical field of drilling, and discloses a portable small drilling device for geological exploration, which comprises a supporting assembly and a drilling assembly mounted on the supporting assembly, two supporting seats are fixedly mounted at the lower end of the supporting assembly, a circular shell is rotatably mounted on one side of each supporting seat, a plurality of openings are formed in the peripheral side of each circular shell, and the openings are communicated with the supporting assemblies. A group of straight toothed plates and a group of L-shaped toothed plates are slidably arranged in the circular shell on one side of the supporting seat in a penetrating manner, rotating rollers and walking gears are correspondingly arranged on rotating shafts on one sides of the L-shaped toothed plates and the straight toothed plates respectively, and the circular shell can rotate; according to the punching machine, the rotating rollers and the walking gears are switched to adapt to different walking environments, meanwhile, the rotating rollers and the walking gears are stored through movement of the L-shaped toothed plate and the straight toothed plate, and during punching, the supporting seat touches the ground, so that the supporting contact area with the ground is increased, and the stability of the whole equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling, and specifically to a portable small drilling device for geological exploration. Background Art

[0002] When conducting hydrological, geological, and environmental explorations, it is necessary to drill geological holes in the designated area and extract soil samples through the drilling holes, so as to quickly collect geological information, facilitate subsequent environmental transformation, oil and gas exploration, and ground construction. Existing small drilling devices for geological exploration, such as a small drilling device for hydrogeological exploration disclosed in the authorized publication number CN221799684U, through the combined use of a solar panel and a storage battery, enables the device to quickly complete energy conversion, so that the staff can carry out drilling work through the starting device of the storage battery, avoiding the problem that the device cannot be used in more environments due to the limitation of the pull wire start. At the same time, by adjusting the use angle of the solar panel, it is ensured that the solar panel can fully contact with sunlight, so as to convert more light energy into electrical energy for storage and use, achieving the effect of energy conservation.

[0003] For existing small drilling devices for geological exploration, in order to facilitate portability, walking wheels are generally installed on the support base at the lower end. Similar to the above-mentioned prior art, by setting universal wheels, the handling work is reduced. However, the drilling environment is outdoors, and the ground may be muddy. When ordinary walking wheels are walking, a large amount of mud will adhere to the surface of the rollers, which is difficult to clean, resulting in the inability of the walking wheels to move. If anti-slip wheels that are convenient for walking on muddy roads are installed, when the anti-slip wheels are walking on normal roads, they will damage the road surface, and at the same time, they will also cause damage to the anti-slip wheels themselves on cement roads and the like. At the same time, when drilling, only the wheels are on the ground, and by setting a plug rod to be vertically inserted into the ground for reinforcement, but the contact support surface with the ground is small, and the support is relatively unstable. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a portable small drilling device for geological exploration that has stable support during drilling and can also walk normally on muddy roads.

[0005] To achieve the above object, the present invention provides the following technical solution: A portable small drilling device for geological exploration, comprising a support assembly and a drilling assembly mounted on the support assembly. Two support seats are fixedly installed at the lower end of the support assembly. A circular shell is rotatably installed on one side of the support seat. A plurality of openings are provided on the circumferential side of the circular shell. A telescopic assembly passing through the openings is slidably arranged in the circular shell. A set of rotating rollers and a set of walking gears are rotatably installed on the telescopic assembly. An installation member for controlling the telescopic movement of the telescopic assembly is arranged between the two support seats. A limiting member connected to the support seat is arranged on the circular shell. The movement of the telescopic assembly is used to control the storage of the rotating rollers and the walking gears, and is also used to control the movement of the limiting member. An inclined groove is provided in the support seat, and a stabilizing member is slidably arranged in the inclined groove. The installation member is also used to control the movement of the stabilizing member.

[0006] Preferably, the installation member is a double-shaft motor fixedly installed on one of the support seats. A rotating rod is fixedly installed at the output end of the double-shaft motor. A circular groove is provided in the support seat. One end of the rotating rod is located in the circular groove and fixedly connected with a rotating gear. A through hole communicating with the circular groove is provided on one side of the circular shell. One end of the rotating gear passes through the through hole and is located inside the circular shell.

[0007] Preferably, the telescopic assembly includes a set of straight tooth plates meshing with the rotating gear and a set of L-shaped tooth plates meshing with the rotating gear. The L-shaped tooth plates and the straight tooth plates are both slidably connected to the corresponding openings. One end of each of the L-shaped tooth plates and the straight tooth plates is fixedly installed with a rotating shaft. The rotating rollers and the walking gears are rotatably connected to the corresponding rotating shafts.

[0008] Preferably, the stabilizing member includes a plugging plate slidably connected to the inclined groove. The inclined groove communicates with the circular groove. A connecting tooth plate meshing with the rotating gear is fixedly installed at the upper end of the plugging plate.

[0009] Preferably, the limiting member includes a pressing member fixedly installed on one side of one of the L-shaped tooth plates. An installation hole is provided on one side wall of the circular shell. A limiting rod is slidably arranged in the installation hole. A spring is fixedly arranged between the limiting rod and the installation hole. Two limiting holes communicating with the installation hole are provided on one side of the support seat. The limiting rod is slidably connected to the limiting holes. The limiting rod is in sliding contact with the pressing member. A plurality of limiting elastic rings in sliding contact with the rotating gear are provided in the through hole.

[0010] Preferably, the pressing member includes a thick plate fixedly connected to the L-shaped tooth plate. An arc-shaped plate is fixedly installed at one end of the thick plate. A thin plate is fixedly installed at one end of the arc-shaped plate. The thick plate, the arc-shaped plate and the thin plate are all in sliding contact with the limiting rod.

[0011] Preferably, the support assembly includes a U-shaped frame, both ends of the U-shaped frame are fixedly connected to two support seats respectively, and the two side rods of the U-shaped frame are threaded rods.

[0012] Preferably, the drilling assembly includes a mounting housing sleeved outside the U-shaped frame. Threaded sleeves are sleeved on both side rods of the U-shaped frame. The threaded sleeves are rotatably connected to the mounting housing. A motor is fixedly installed at the upper end of the mounting housing. A drill rod is fixedly installed at the output end of the motor. A first pulley is sleeved on the output end of the motor. A second pulley is sleeved outside the threaded sleeve. A transmission belt is sleeved between the first pulley and the second pulley.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the present invention, a set of straight tooth plates and a set of L-shaped tooth plates are slidably penetrated and arranged in a circular housing on one side of the support seat. A rotating roller and a walking gear are respectively arranged on the rotating shafts on one side of the L-shaped tooth plate and the straight tooth plate. The circular housing can rotate to switch the rotating roller and the walking gear to adapt to different walking environments. At the same time, the movement of the L-shaped tooth plate and the straight tooth plate stores the rotating roller and the walking gear. When drilling, the support seat touches the ground, increasing the support contact area with the ground and enhancing the stability of the entire device.

[0015] 2. In the present invention, a plug-in plate is slidably connected to the inclined groove of the support seat. The connecting tooth plate at the upper end of the plug-in plate meshes with the rotating gear. When drilling, when the rotating gear rotates to control the movement of the L-shaped tooth plate and the straight tooth plate to store the rotating roller and the walking gear, after the support seat touches the ground, it will also drive the plug-in plate to tilt and insert into the ground. While the support seat stably supports, the inclined plug-in plate is used to reinforce the overall device.

[0016] 3. In the present invention, an extrusion member is arranged on one side of one of the L-shaped tooth plates, and a limiting rod is slidably arranged in the mounting hole of the circular housing. When the rotating gear rotates to control the movement of the L-shaped tooth plate and the straight tooth plate to store the rotating roller and the walking gear, it will also drive the extrusion member to move, causing the limiting rod to disengage from the limiting hole. At this time, if it is necessary to replace the rotating roller and the walking gear, controlling the rotation of the circular housing is sufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present invention;

[0018] Figure 2 is a schematic three-dimensional surface structure diagram of the support seat of the present invention;

[0019] Figure 3 is a schematic three-dimensional sectional structure diagram of the circular housing of the present invention;

[0020] Figure 4 is Figure 3 Schematic enlarged structure diagram of A in

[0021] Figure 5 Schematic three-dimensional sectional structure diagram of the support base and the circular shell of the present invention;

[0022] Figure 6 is Figure 5 Schematic enlarged structure diagram of B in

[0023] Figure 7 is Figure 6 Schematic enlarged structure diagram of C in

[0024] Figure 8 Schematic three-dimensional sectional structure diagram of the support base of the present invention;

[0025] Figure 9 is Figure 8 Schematic enlarged structure diagram of D in

[0026] Figure 10 Schematic three-dimensional structure diagram of the mounting member of the present invention;

[0027] Figure 11 Schematic three-dimensional sectional structure diagram of the mounting shell of the present invention.

[0028] In the figure: 1, drill pipe; 2, support base; 3, mounting shell; 4, motor; 5, U-shaped frame; 6, circular shell; 7, dual-axis motor; 8, rotating rod; 9, walking gear; 10, rotating roller; 11, opening; 12, L-shaped toothed plate; 13, rotating gear; 14, straight toothed plate; 15, thick plate; 16, rotating shaft; 17, mounting hole; 18, spring; 19, limiting rod; 20, limiting hole; 21, through hole; 22, limiting spring ring; 23, arc plate; 24, thin plate; 25, plugging plate; 26, connecting toothed plate; 27, conveyor belt; 28, threaded sleeve; 29, first pulley; 30, second pulley; 31, circular groove; 32, inclined groove. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] Embodiment

[0031] Please refer to Figures 1-11, a portable small drilling device for geological exploration, comprising a support assembly and a drilling assembly installed on the support assembly. Two support seats 2 are fixedly installed at the lower end of the support assembly. The support assembly includes a U-shaped frame 5. Both ends of the U-shaped frame 5 are fixedly connected to the two support seats 2 respectively. The two side rods of the U-shaped frame 5 are threaded rods. The drilling assembly includes a mounting housing 3 sleeved outside the U-shaped frame 5. Threaded sleeves 28 are threadedly sleeved on both side rods of the U-shaped frame 5. The threaded sleeves 28 are rotatably connected to the mounting housing 3. A motor 4 is fixedly installed at the upper end of the mounting housing 3. A drill rod 1 is fixedly installed at the output end of the motor 4. A first pulley 29 is sleeved at the output end of the motor 4. A second pulley 30 is sleeved outside the threaded sleeve 28 (the diameter of the second pulley 30 is larger than that of the first pulley 29). A transmission belt 27 is sleeved between the first pulley 29 and the second pulley 30. For the existing portable small drilling equipment of this kind, most of them control the downward movement of the drill rod 1 by rotating a winch by the operator and through the cooperation of a chain. The chain is prone to loosening and may fall off the sprocket. Through the cooperation of the threaded sleeve 28 and the threaded rod, the situation that the motor 4 and the drill rod 1 fall or cannot move upward will not occur. At the same time, when the motor 4 works, it provides its own power for it to rise or fall. Because it works outdoors, the power source carried is reduced;

[0032] A circular housing 6 is rotatably mounted on one side of a support base 2. A plurality of openings 11 are formed on the circumferential side of the circular housing 6. A telescopic assembly passing through the openings 11 is slidably arranged inside the circular housing 6. A set of rotating rollers 10 and a set of traveling gears 9 are rotatably mounted on the telescopic assembly. An installation member for controlling the telescopic movement of the telescopic assembly is arranged between the two support bases 2. A double-shaft motor 7 fixedly mounted on one of the support bases 2 is provided on the installation member. A rotating rod 8 is fixedly mounted on the output end of the double-shaft motor 7. A circular groove 31 is formed inside the support base 2. One end of the rotating rod 8 is located inside the circular groove 31 and fixedly connected with a rotating gear 13. A through hole 21 communicating with the circular groove 31 is formed on one side of the circular housing 6. One end of the rotating gear 13 passes through the through hole 21 and is located inside the circular housing 6. The telescopic assembly includes a set of straight tooth plates 14 meshing with the rotating gear 13 and a set of L-shaped tooth plates 12 meshing with the rotating gear 13. The L-shaped tooth plates 12 and the straight tooth plates 14 are both slidably connected with the corresponding openings 11. One end of each of the L-shaped tooth plates 12 and the straight tooth plates 14 is fixedly mounted with a rotating shaft 16 (a plurality of L-shaped tooth plates 12 and straight tooth plates 14 are in a staggered state). The rotating rollers 10 and the traveling gears 9 are rotatably connected with the corresponding rotating shafts 16. When the double-shaft motor 7 works and the circular housing 6 does not rotate, the double-shaft motor 7 drives the rotating gear 13 to rotate. The rotating gear 13 drives the L-shaped tooth plates 12 and the straight tooth plates 14 to move, so as to accommodate the rotating rollers 10 and the traveling gears 9. The support base 2 touches the ground. When drilling, by making the support base 2 touch the ground, the support contact area with the ground is increased, and the stability of the whole device is increased. The circular housing 6 can rotate, and its synchronous rotation with the rotating gear 13 can be controlled (at this time, the L-shaped tooth plates 12 and the straight tooth plates 14 also move synchronously, and the rotating gear 13 and the circular housing 6 are in a relatively static state, and the rotating rollers 10 and the traveling gears 9 are still in the accommodated state), so as to switch the rotating rollers 10 and the traveling gears 9 to adapt to different walking environments;

[0033] A limiting member connected with the support base 2 is arranged on the circular housing 6. The movement of the telescopic assembly is used to control the accommodation of the rotating rollers 10 and the traveling gears 9, and is also used to control the movement of the limiting member. An inclined groove 32 is formed inside the support base 2. A stabilizing member is slidably arranged inside the inclined groove 32. The installation member is also used to control the movement of the stabilizing member.

[0034] As a further technical solution of the present invention, the stabilizing member includes a plugging plate 25 slidably connected to the inclined groove 32. The inclined groove 32 communicates with the circular groove 31. A connecting tooth plate 26 meshing with the rotating gear 13 is fixedly installed at the upper end of the plugging plate 25. There is a distance between the lower end of the plugging plate 25 and the bottom of the support seat 2. At this time, when the rotating gear 13 is rotated to store the rotating roller 10 and the traveling gear 9, the rotating gear 13 will drive the connecting tooth plate 26 to move. The connecting tooth plate 26 first drives the plugging plate 25 to slide in the inclined groove 32. Until the support seat 2 touches the ground, the plugging plate 25 continues to move and inserts into the ground. The length of the plugging plate 25 in this application can be set according to requirements, and the size of the rotating gear 13 (the size of the part of the rotating gear 13 meshing with the plugging plate 25) is synchronously modified. While the support seat 2 stably supports, the inclined plugging plate 25 is used to reinforce the overall equipment.

[0035] As a further technical solution of the present invention, the limiting member includes a pressing member fixedly installed on one side of one of the L-shaped tooth plates 12. An installation hole 17 is opened on one side wall of the circular housing 6. A limiting rod 19 is slidably arranged in the installation hole 17. A spring 18 is fixedly arranged between the limiting rod 19 and the installation hole 17. Two limiting holes 20 communicating with the installation hole 17 are opened on one side of the support seat 2. The limiting rod 19 is slidably connected with the limiting holes 20. The limiting rod 19 is in sliding contact with the pressing member. A plurality of limiting spring rings 22 in sliding contact with the rotating gear 13 are arranged in the through hole 21. The pressing member includes a thick plate 15 fixedly connected to the L-shaped tooth plate 12 (this L-shaped tooth plate 12 is close to the inner side of the circular housing 6 and is in sliding contact with its inner side wall). One end of the thick plate 15 is fixedly installed with an arc-shaped plate 23. One end of the arc-shaped plate 23 is fixedly installed with a thin plate 24. The thick plate 15, the arc-shaped plate 23 and the thin plate 24 are all in sliding contact with the limiting rod 19. When the whole equipment is moving, one end of the limiting rod 19 is located in the limiting hole 20, and the spring 18 is compressed. When drilling is required, the rotating roller 10 and the traveling gear 9 are stored, and the support seat 2 is controlled to touch the ground. During the movement of the L-shaped tooth plate 12, it will drive the thick plate 15, the arc-shaped plate 23 and the thin plate 24 to move. Until the rotating roller 10 and the traveling gear 9 are stored and both are off the ground, the thick plate 15 still abuts against the limiting rod 19, and it can be switched repeatedly. When it is necessary to switch the rotating roller 10 and the traveling gear 9, continue to store the rotating roller 10 and the traveling gear 9 until the thin plate 24 abuts against the limiting rod 19. Through the cooperation of the spring 18, the limiting rod 19 can be controlled to disengage from the limiting hole 20. At this time, the circular housing 6 can be controlled to rotate.

[0036] Working principle:

[0037] When drilling is required, at this time, one end of the limiting rod 19 is located in the limiting hole 20, and the spring 18 is compressed to limit the circular housing 6.

[0038] Move the entire device to the punching position, start the operation of the double-shaft motor 7 to drive the rotating rod 8 to rotate. The rotating rod 8 drives the rotating gear 13 to rotate, and the rotating gear 13 drives the L-shaped tooth plate 12 and the straight tooth plate 14 to slide within the opening 11. The L-shaped tooth plate 12 and the straight tooth plate 14 drive the corresponding rotating rollers 10 and the traveling gears 9 to move for storage. For example, at this time, two rotating rollers 10 are on the ground. At this time, the two rotating rollers 10 move upward, and the two traveling gears 9 move downward. As the rotating rollers 10 move upward, the support base 2 touches the ground for support. During this process, the rotating gear 13 drives the connecting tooth plate 26 to move, and the connecting tooth plate 26 drives the plug-in plate 25 to only slide within the inclined slot 32. At the same time, the movement of the L-shaped tooth plate 12 will also drive the thick plate 15, the arc-shaped plate 23, and the thin plate 24 to move. During the above process, the thick plate 15 still limits the position of the limiting rod 19;

[0039] Continue to start the double-shaft motor 7. The L-shaped tooth plate 12 and the straight tooth plate 14 continue to drive the rotating rollers 10 and the traveling gears 9 to move away from the ground. At this time, the plug-in plate 25 continues to move and inserts into the ground. While the support base 2 stably supports, the inclined plug-in plate 25 is used to reinforce the overall device. The L-shaped tooth plate 12 continues to drive the thick plate 15, the arc-shaped plate 23, and the thin plate 24 to move until the rotating rollers 10 and the traveling gears 9 are stored and all move away from the ground. The thick plate 15 still abuts against the limiting rod 19, which is convenient for repeated switching between walking and punching;

[0040] Then start the motor 4 to move downward for punching, and then reverse the control to move it upward for sampling;

[0041] If it is necessary to switch between the rotating rollers 10 and the traveling gears 9, first control the support base 2 to touch the ground according to the above steps, and continue to store the rotating rollers 10 and the traveling gears 9 until the thin plate 24 abuts against the limiting rod 19. Through the cooperation of the spring 18, the limiting rod 19 can be controlled to disengage from the limiting hole 20. Then start the double-shaft motor 7. In the case where the circular housing 6 is not limited, through the cooperation of the rotating gear 13 and the limiting spring ring 22, the rotating gear 13 drives the circular housing 6 to rotate, and the rotating rollers 10 and the traveling gears 9 move synchronously until the limiting rod 19 moves to another limiting hole 20 to complete the switching. At this time, hold the circular housing 6 and control the double-shaft motor 7 to reverse, and the rotating rollers 10 and the traveling gears 9 can be pushed out, the support base 2 is separated from the ground, and the limiting rod 19 is inserted into another limiting hole 20 for limiting.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable small drilling device for geological exploration, comprising a support assembly and a drilling assembly mounted on the support assembly, characterized in that: Two support seats (2) are fixedly installed at the lower end of the support assembly, a circular shell (6) is rotatably installed on one side of the support seat (2), a plurality of openings (11) are provided on the circumference of the circular shell (6), a telescopic assembly penetrating the opening (11) is slidably arranged in the circular shell (6), a group of rotating rollers (10) and a group of traveling gears (9) are rotatably installed on the telescopic assembly, a mounting member for controlling the telescopic movement of the telescopic assembly is arranged between the two support seats (2), a limiting member connected to the support seat (2) is arranged on the circular shell (6), the movement of the telescopic assembly is used to control the storage of the rotating roller (10) and the traveling gear (9), and is also used to control the movement of the limiting member, an inclined groove (32) is provided in the support seat (2), a stabilizing member is slidably arranged in the inclined groove (32), and the mounting member is also used to control the movement of the stabilizing member.

2. A portable small drilling device for geological exploration according to claim 1, characterized in that: The mounting member is fixedly mounted on a dual-axis motor (7) on one of the support seats (2); a rotating rod (8) is fixedly mounted on the output end of the dual-axis motor (7); a circular groove (31) is provided in the support seat (2); one end of the rotating rod (8) is located in the circular groove (31) and is fixedly connected to a rotating gear (13); a through hole (21) communicating with the circular groove (31) is provided on one side of the circular shell (6); one end of the rotating gear (13) passes through the through hole (21) and is located in the circular shell (6).

3. A portable small drilling device for geological exploration according to claim 2, characterized in that: The telescopic assembly comprises a group of spur plates (14) meshed with a rotating gear (13) and a group of L-shaped tooth plates (12) meshed with the rotating gear (13); the L-shaped tooth plates (12) and the spur plates (14) are both slidably connected to openings (11) at corresponding positions; one end of the L-shaped tooth plates (12) and the spur plates (14) are fixedly mounted with a rotating shaft (16); the rotating roller (10) and the traveling gear (9) are rotatably connected to the rotating shaft (16) at corresponding positions.

4. A portable small drilling device for geological exploration according to claim 3, characterized in that: The stabilizing member comprises a plug-in plate (25) slidably connected to the inclined groove (32), the inclined groove (32) is communicated with the circular groove (31), and a connecting tooth plate (26) meshing with the rotating gear (13) is fixedly mounted on the upper end of the plug-in plate (25).

5. A portable small drilling device for geological exploration according to claim 4, characterized in that: The limiting member comprises an extrusion member fixedly mounted on one side of one of the L-shaped tooth plates (12); a mounting hole (17) is provided on one side wall of the circular shell (6); a limiting rod (19) is slidably arranged in the mounting hole (17); a spring (18) is fixedly arranged between the limiting rod (19) and the mounting hole (17); two limiting holes (20) connected to the mounting hole (17) are provided on one side of the support seat (2); the limiting rod (19) is slidably connected to the limiting holes (20); the limiting rod (19) is in sliding contact with the extrusion member; and the through hole (21) is provided with a plurality of limiting elastic rings (22) in sliding contact with the rotating gear (13).

6. A portable small drilling device for geological exploration according to claim 5, characterized in that: The extrusion component comprises a thick plate (15) fixedly connected to the L-shaped tooth plate (12), an arc-shaped plate (23) being fixedly mounted on one end of the thick plate (15), a thin plate (24) being fixedly mounted on one end of the arc-shaped plate (23), and the thick plate (15), the arc-shaped plate (23) and the thin plate (24) are all in sliding contact with the limiting rod (19).

7. A portable small drilling device for geological exploration according to claim 1, characterized in that: The support assembly comprises a U-shaped frame (5), two ends of the U-shaped frame (5) are respectively fixedly connected to two support seats (2), and two side rods of the U-shaped frame (5) are threaded rods.

8. A portable small drilling device for geological exploration according to claim 7, characterized in that: The drilling assembly comprises a mounting shell (3) sleeved on the outside of a U-shaped frame (5), a threaded sleeve (28) is threadedly sleeved on both side rods of the U-shaped frame (5), the threaded sleeve (28) is rotatably connected to the mounting shell (3), a motor (4) is fixedly mounted on the upper end of the mounting shell (3), a drill rod (1) is fixedly mounted on the output end of the motor (4), a first pulley (29) is sleeved on the output end of the motor (4), a second pulley (30) is sleeved on the outside of the threaded sleeve (28), and a transmission belt (27) is sleeved between the first pulley (29) and the second pulley (30).

Images