Energy-saving type drill-pulling-out-assisted drill jumbo

Abstract

The present application relates to rock drilling jumbo technical field, disclose a kind of energy-saving rock drilling jumbo of stuck drill pipe assisted pulling out, including jumbo body, hydraulic rod and guide rail are installed on the drill arm of jumbo body, drill rig is slidably installed on the guide rail, the telescopic end of hydraulic rod is fixedly installed with drill rig, the output end of drill rig is installed with drill pipe, further comprising: connecting mechanism, for connecting drill rig and drill pipe, the connecting mechanism includes the connecting sleeve fixedly installed in the output end of drill rig, connecting barrel is movably installed in the inside of connecting sleeve, the end of connecting barrel away from drill rig is closed structure, the drill pipe is connected with connecting barrel, recoil mechanism, transmission cooperation is formed between the recoil mechanism and connecting mechanism.The present application generates intermittent reverse impact on the end of connecting barrel by impact column, and by mechanical energy storage impact mode of side vibration side retreat, hard pull can be changed into shake loose, and the success rate and efficiency of pulling out stuck drill pipe are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of rock drilling rig technology, and in particular to an energy-saving rock drilling rig with assisted drill bit extraction. Background Technology

[0002] Rock drilling rigs are core equipment in underground mining, tunnel engineering, and rock excavation operations. Their drilling efficiency and reliability directly affect project progress and construction costs. During rock drilling operations, drill pipe jamming accidents are highly likely to occur when drilling through fractured rock layers, fissure zones, or water-swellable strata. Drill pipe jamming not only interrupts drilling operations but can also cause drill pipe breakage, drill bit damage, or even overload of the rig's power system, resulting in high maintenance costs and project delays.

[0003] Currently, existing rock drilling rigs mainly rely on two methods to deal with stuck drill bits: One method is simple mechanical reversal and retraction, which involves using a hydraulic motor to drive the drill rod to rotate in the opposite direction while simultaneously retracting the feed cylinder, attempting to forcibly pull the drill rod out of the hole. This method may be effective in cases of minor jamming, but in severe jamming situations such as borehole wall collapse, rock wedging, or rock powder agglomeration, continuous rotational torque and axial tension alone are often insufficient to overcome the resistance at the jamming point. Instead, it can easily lead to the drill rod being stretched, threaded connections being damaged, or even fatigue fracture.

[0004] Secondly, manual tapping by operators involves experienced workers using hammers or other tools to manually tap the drill rod or drill bit shank, attempting to loosen the jamming point through impact and vibration. This method is not only inefficient and poses safety hazards, but the impact force is also difficult to control. Insufficient force will not loosen the jamming point, while excessive force may damage the drill rod or bearing components. Furthermore, it cannot coordinate with the reverse rotation of the drill rod. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an energy-saving rock drilling rig for assisted drill bit extraction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An energy-saving rock drilling rig with assisted drill bit extraction includes a rig body, a hydraulic rod and a guide rail mounted on the drill arm of the rig body, a drill rig slidably mounted on the guide rail, a telescopic end of the hydraulic rod fixedly mounted to the drill rig, and a drill rod mounted on the output end of the drill rig. The rig also includes: A connecting mechanism for connecting a drilling rig and a drill rod, the connecting mechanism including a connecting sleeve fixedly installed at the output end of the drilling rig, a connecting cylinder movably installed inside the connecting sleeve, the end of the connecting cylinder away from the drilling rig being a closed structure, and the drill rod being connected to the connecting cylinder; The anti-impact mechanism, which is connected to the connecting mechanism, is used to impact the end of the connecting cylinder, so that the drill rod generates an anti-impact force when it is pulled out.

[0007] As a further embodiment of the present invention, the anti-impact mechanism includes a U-shaped plate slidably mounted on a guide rail. A groove is provided at the bottom of the U-shaped plate, and a slider is slidably mounted on the inner wall of the groove. A fixing ring is fixedly mounted at the top of the slider. A rotating ring that can rotate in one direction is mounted on the outer surface of the fixing ring near the connecting sleeve. A plurality of impact pillars are fixedly mounted on the outer surface of the rotating ring. The ends of the impact pillars can abut against the closed end of the connecting cylinder. A one-way bearing is installed between the rotating ring and the fixing ring. A pushing assembly is installed between the connecting sleeve and the rotating ring.

[0008] As a further embodiment of the present invention, the pushing component includes a plurality of trapezoidal grooves uniformly opened on the outer periphery of the connecting sleeve near the fixed ring end, and a plurality of guide plates are fixedly installed at equal intervals on the outer periphery of the rotating ring. The guide plates are correspondingly inserted into the trapezoidal grooves, and the inner walls on opposite sides of the trapezoidal grooves are respectively provided as a plane on one side and an inclined plane on the other side.

[0009] As a further embodiment of the present invention, a storage spring is fixedly installed between the side of the fixing ring away from the connecting sleeve and the outer surface of the U-shaped plate.

[0010] As a further embodiment of the present invention, a connecting component is installed between the connecting sleeve and the connecting cylinder. The connecting component includes an opening that extends through the outer periphery of the connecting cylinder. The inner wall of the connecting sleeve corresponding to the opening is provided with an installation groove. A locking block is slidably installed inside the installation groove. A clearance groove is provided through the end of the connecting sleeve that is offset from the opening.

[0011] As a further embodiment of the present invention, a spring rod is fixedly installed on the inner wall of the mounting groove at the end away from the connecting cylinder. The telescopic end of the spring rod is fixedly installed on the outer surface of the locking block. One side of the locking block is set as an inclined surface. A receiving groove is opened on the outer periphery of the connecting cylinder corresponding to the spring rod. The receiving groove is used to store the locking block.

[0012] As a further embodiment of the present invention, a limiting ring is fixedly installed on the inner wall of the connecting sleeve at the end away from the drilling rig, and the connecting cylinder is installed between the limiting ring and the end wall of the connecting sleeve.

[0013] As a further embodiment of the present invention, a return spring is installed inside the connecting cylinder, and the return spring is disposed between the end wall of the connecting cylinder and the connecting sleeve.

[0014] As a further embodiment of the present invention, a limiting groove is formed on the outer periphery of the connecting sleeve, and the U-shaped plate is rotatably installed on the inner wall of the limiting groove.

[0015] As a further embodiment of the present invention, a connecting hole is provided at the closed end of the connecting cylinder, and the drill rod is installed on the connecting cylinder through the connecting hole.

[0016] The beneficial effects of this invention are as follows: 1. Through the cooperation of one-way bearings, trapezoidal grooves, and guide plates, the automatic separation of functions during forward and reverse rotation of the drill rod is achieved. When the drill rig rotates forward for drilling, the rotating ring rotates synchronously with the connecting sleeve, and the impact column will not impact the connecting cylinder, ensuring the stability and efficiency of drilling operations. When the drill rig reverses to pull out, the rotating ring is locked, and the reverse movement of the connecting sleeve will force the guide plate to slide along the inclined surface of the trapezoidal groove, thereby compressing the energy storage spring and releasing it instantly, causing the impact column to generate intermittent reverse impacts on the end of the connecting cylinder. Through the mechanical energy storage impact method of simultaneous vibration and retraction, the hard pull can be transformed into vibration loosening, significantly improving the success rate and efficiency of pulling out stuck drill rods. 2. By setting up a connecting assembly with a beveled locking block and a spring rod, an effective overload protection function is achieved. When the drill bit is severely stuck and the reversing resistance is too high, the beveled surface of the locking block will overcome the thrust of the spring rod and automatically retract into the receiving groove on the outer periphery of the connecting cylinder, so that the transmission between the connecting sleeve and the connecting cylinder is disengaged. This can prevent the drill bit from being damaged due to torque overload when reversing, and protect the safety of the power components and transmission system. 3. After an overload protection event occurs and the drill pipe stops rotating, the connecting sleeve can continue to reverse, driving the counter-impact mechanism to continuously impact the stuck drill pipe, maintaining the freeing force and increasing the feasibility of handling stubborn stuck drill bits. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an energy-saving rock drilling rig with assisted drill bit extraction proposed in this invention; Figure 2 This is a schematic diagram of the right side structure of the U-shaped plate of an energy-saving rock drilling rig with assisted drill pull-out proposed in this invention; Figure 3 This is a schematic diagram of the left side structure of the U-shaped plate of an energy-saving rock drilling rig with assisted drill pull-out proposed in this invention; Figure 4 This is a schematic diagram of the connecting sleeve structure of an energy-saving rock drilling rig with assisted drill bit extraction proposed in this invention; Figure 5 This is a schematic diagram of the connecting sleeve and connecting cylinder installation structure of an energy-saving rock drilling rig with assisted drill pull-out proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the connecting sleeve of an energy-saving rock drilling rig with assisted drill pull-out proposed in this invention. Figure 7 This is a schematic diagram of the connecting cylinder structure of an energy-saving rock drilling rig with assisted drill bit extraction proposed in this invention; Figure 8 This is a schematic diagram of the disassembled structure of the fixed ring and rotating ring of an energy-saving rock drilling rig with assisted drill pull-out proposed in this invention; Figure 9 This is a schematic diagram of the locking block structure of an energy-saving rock drilling rig with assisted drill extraction proposed in this invention.

[0018] In the diagram: 1. Trolley body; 2. Hydraulic rod; 3. Guide rail; 4. Drilling rig; 5. Drill rod; 6. Connecting sleeve; 7. U-shaped plate; 8. Fixing ring; 9. Rotary ring; 10. One-way bearing; 11. Impact column; 12. Connecting cylinder; 13. Connecting hole; 14. Trapezoidal groove; 15. Guide plate; 16. Storage spring; 17. Limiting ring; 18. Mounting groove; 19. Spring rod; 20. Locking block; 21. Return spring; 22. Opening; 23. Receiving groove; 24. Leaving groove; 25. Limiting groove; 26. Slide groove; 27. Slider. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] See attached document Figure 1 - Appendix Figure 9 An energy-saving rock drilling rig with assisted drill bit extraction includes a rig body 1, a hydraulic rod 2 and a guide rail 3 mounted on the drill arm of the rig body 1, a drill rig 4 slidably mounted on the guide rail 3, the telescopic end of the hydraulic rod 2 being fixedly mounted to the drill rig 4, and a drill rod 5 mounted on the output end of the drill rig 4. It also includes: A connecting mechanism is used to connect the drill rig 4 and the drill rod 5. The connecting mechanism includes a connecting sleeve 6 fixedly installed at the output end of the drill rig 4. A connecting cylinder 12 is movably installed inside the connecting sleeve 6. The end of the connecting cylinder 12 away from the drill rig 4 is a closed structure. The drill rod 5 is connected to the connecting cylinder 12. A connecting hole 13 is opened at the closed end of the connecting cylinder 12. The drill rod 5 is installed on the connecting cylinder 12 through the connecting hole 13. The anti-impact mechanism, which is connected to the connecting mechanism, is used to impact the end of the connecting cylinder 12, so that the drill rod 5 generates an anti-impact force when it is pulled out.

[0022] In this embodiment, the anti-impact mechanism includes a U-shaped plate 7 slidably mounted on the guide rail 3. A groove 26 is provided at the bottom of the U-shaped plate 7. A slider 27 is slidably mounted on the inner wall of the groove 26. A fixing ring 8 is fixedly mounted at the top of the slider 27. A rotating ring 9 that can rotate in one direction is mounted on the outer surface of the fixing ring 8 near the connecting sleeve 6. A plurality of impact pillars 11 are fixedly mounted on the outer surface of the rotating ring 9. The ends of the impact pillars 11 can abut against the closed end of the connecting cylinder 12. A one-way bearing 10 is installed between the rotating ring 9 and the fixing ring 8. A pushing assembly is installed between the connecting sleeve 6 and the rotating ring 9. The pushing assembly includes a plurality of trapezoidal grooves 14 evenly opened on the outer periphery of the connecting sleeve 6 near the fixing ring 8. A plurality of guide plates 15 are fixedly mounted at equal intervals on the outer periphery of the rotating ring 9. The guide plates 15 are correspondingly inserted into the trapezoidal grooves 14. The inner walls of the trapezoidal grooves 14 on opposite sides are respectively set as a flat side and a sloping side. A storage spring 16 is fixedly mounted between the side of the fixing ring 8 away from the connecting sleeve 6 and the outer surface of the U-shaped plate 7.

[0023] When the connecting sleeve 6 rotates forward, the side of the guide plate 15 contacts the plane side of the trapezoidal groove 14. Since the rotating ring 9 is rotatably installed with the fixed ring 8 through the one-way bearing 10, the rotating ring 9 can be driven to rotate synchronously through the guide plate 15 when the connecting sleeve 6 rotates forward, avoiding the impact column 11 from impacting the end of the connecting cylinder 12 and ensuring the stability of the drill rod 5 during drilling. When the connecting sleeve 6 rotates in reverse, the rotating ring 9 will stop rotating under the action of the one-way bearing 10, so that the guide plate 15 is pushed towards the fixed ring 8 under the pressure of the inclined surface of the trapezoidal groove 14 until it moves out of the trapezoidal groove 14, so that the energy storage spring 16 is compressed. As the connecting sleeve 6 continues to rotate, when the guide plate 15 reaches the plane side of the trapezoidal groove 14 again, the energy storage spring 16 will release its elastic force and quickly push the fixed ring 8 towards the connecting sleeve 6 as a whole, so that the impact column 11 installed on the outside of the rotating ring 9 can impact the end of the connecting cylinder 12, so that the connecting cylinder 12 is subjected to a reverse impact force, so that the connecting cylinder 12 pulls the drill rod 5 outward.

[0024] In this embodiment, a connecting assembly is installed between the connecting sleeve 6 and the connecting cylinder 12. The connecting assembly includes an opening 22 extending through the outer periphery of the connecting cylinder 12. A mounting groove 18 is provided on the inner wall of the connecting sleeve 6 corresponding to the opening 22. A locking block 20 is slidably installed inside the mounting groove 18. A clearance groove 24 is provided through the end of the connecting sleeve 6 that is offset from the opening 22, allowing the opening end of the connecting cylinder 12 to enter the clearance groove 24 after an impact, ensuring that the connecting cylinder 12 has a certain amount of room to move. The end of the mounting groove 18 furthest from the connecting cylinder 12... A spring rod 19 is fixedly installed on the inner wall. The telescopic end of the spring rod 19 is fixedly installed on the outer surface of the locking block 20. One side of the locking block 20 is set with a slope. Since the torque required to pull out the drill rod 5 in reverse is reduced, the slope of the locking block 20 will abut against the side of the opening 22. The transmission of the connecting sleeve 6 to the connecting cylinder 12 is realized by the pushing force of the spring rod 19 on the locking block 20 and the squeezing force of the locking block 20 against the side of the opening 22. The connecting cylinder 12 has a receiving groove 23 on the outer periphery corresponding to the spring rod 19. The receiving groove 23 is used to store the locking block 20.

[0025] When drill rod 5 gets stuck during extraction, the inclined surface of the clamping block 20 allows the torque exerted by the drill rig 4 on the connecting sleeve 6 to overcome the thrust of the spring rod 19 on the clamping block 20. This causes the clamping block 20 to be forced into the receiving groove 23 on the outer periphery of the connecting cylinder 12 under the action of the inclined surface. This prevents the connecting sleeve 6 from rotating the clamping block 20 and thus the connecting cylinder 12 from rotating, avoiding damage due to overload when the drill rig 4 reverses. When drill rod 5 gets stuck, the connecting sleeve 6 continues to reverse, allowing the counter-impact mechanism to continuously impact the end of the connecting cylinder 12, maintaining the counter-impact effect of drill rod 5 to overcome the stuck drill.

[0026] In this embodiment, a limiting ring 17 is fixedly installed on the inner wall of the end of the connecting sleeve 6 away from the drilling rig 4. The connecting cylinder 12 is installed between the limiting ring 17 and the end wall of the connecting sleeve 6. A return spring 21 is installed inside the connecting cylinder 12. The return spring 21 is located between the connecting cylinder 12 and the end wall of the connecting sleeve 6.

[0027] When the drill rod 5 is pulled out, the connecting sleeve 6 applies a pulling force to the connecting cylinder 12 through the limiting ring 17; the return spring 21 is used to ensure that the connecting cylinder 12 returns to its original position after being impacted.

[0028] In this embodiment, a limiting groove 25 is provided on the outer periphery of the connecting sleeve 6, and the U-shaped plate 7 is rotatably installed on the inner wall of the limiting groove 25. The connecting sleeve 6 and the U-shaped plate 7 are connected through the limiting groove 25 to ensure that the U-shaped plate 7 moves synchronously when the connecting sleeve 6 moves.

[0029] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: when using the trolley body 1 to perform rock drilling operations, the drill rod 5 is rotated by the output end of the drill rig 4, and at the same time, the drill rod 5 is slowly pushed by the hydraulic rod 2 to perform drilling operations on the rock strata. During drilling operations, the output end of the drill rig 4 will drive the connecting sleeve 6 to rotate clockwise, causing the flat side of the locking block 20 installed on the inner wall of the connecting sleeve 6 to abut against one side wall of the opening 22. This allows the connecting sleeve 6 to rotate through the locking block 20, thereby driving the connecting cylinder 12 to rotate. The connecting cylinder 12 can then drive the drill rod 5 to rotate. At the same time, the clearance groove 24 opened on the end wall of the connecting sleeve 6 is offset from the opening end of the connecting cylinder 12, causing the inner wall of the connecting sleeve 6 to abut against the end of the connecting cylinder 12, so that the connecting sleeve 6 can push the drill rod 5 to drill through the connecting cylinder 12. When it is necessary to pull out the drill rod 5, the output end of the drill rig 4 will drive the connecting sleeve 6 to reverse, thereby driving the drill rod 5 to reverse through the locking block 20 and the connecting cylinder 12. At the same time, in conjunction with the contraction of the extension end of the hydraulic rod 2, the drill rod 5 will be pulled out of the borehole. When the connecting sleeve 6 rotates forward, the side of the guide plate 15 contacts the plane side of the trapezoidal groove 14. Since the rotating ring 9 is rotatably installed with the fixed ring 8 through the one-way bearing 10, the rotating ring 9 can be driven to rotate synchronously through the guide plate 15 when the connecting sleeve 6 rotates forward, so as to avoid the impact column 11 from impacting the end of the connecting cylinder 12 and ensure the stability of the drill rod 5 drilling. When the connecting sleeve 6 reverses, the rotating ring 9 will stop rotating under the action of the one-way bearing 10, so that the guide plate 15 is pushed towards the fixed ring 8 under the pressure of the inclined surface of the trapezoidal groove 14 until it moves out of the trapezoidal groove 14, so that the energy storage spring 16 is compressed. As the connecting sleeve 6 continues to rotate, when the guide plate 15 reaches the plane side of the trapezoidal groove 14 again, the energy storage spring 16 will release the elastic force and quickly push the fixed ring 8 towards the connecting sleeve 6 as a whole, so that the impact column 11 installed on the outside of the rotating ring 9 can impact the end of the connecting cylinder 12, so that the connecting cylinder 12 is subjected to the reverse impact force, so that the connecting cylinder 12 pulls the drill rod 5 outward. When the drill rod 5 gets stuck and cannot rotate during the extraction process, since one side of the clamping block 20 is set with an inclined surface, the torque of the drill 4 driving the connecting sleeve 6 to rotate will overcome the pushing force of the spring rod 19 on the clamping block 20. Under the action of the inclined surface, the clamping block 20 is squeezed into the receiving groove 23 opened on the outer periphery of the connecting cylinder 12, so that when the connecting sleeve 6 drives the clamping block 20 to rotate, it will no longer drive the connecting cylinder 12 to rotate, thus avoiding damage due to overload when the drill 4 reverses. When drill pipe 5 gets stuck, connecting sleeve 6 will continue to rotate in reverse, so that the anti-impact mechanism can continuously impact the end of connecting sleeve 12, maintaining the anti-impact effect of drill pipe 5 in order to overcome the stuck drill.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy-saving rock drilling rig with assisted drill bit extraction, comprising a rig body (1), wherein a hydraulic rod (2) and a guide rail (3) are mounted on the drill arm of the rig body (1), a drill rig (4) is slidably mounted on the guide rail (3), the telescopic end of the hydraulic rod (2) is fixedly mounted to the drill rig (4), and a drill rod (5) is mounted on the output end of the drill rig (4), characterized in that, Also includes: A connecting mechanism is used to connect the drill (4) and the drill rod (5). The connecting mechanism includes a connecting sleeve (6) fixedly installed at the output end of the drill (4). A connecting cylinder (12) is movably installed inside the connecting sleeve (6). The end of the connecting cylinder (12) away from the drill (4) is a closed structure. The drill rod (5) is connected to the connecting cylinder (12). The anti-impact mechanism, which is connected to the connecting mechanism, is used to impact the end of the connecting cylinder (12) to generate an anti-impact force when the drill rod (5) is pulled out. The anti-impact mechanism includes a U-shaped plate (7) slidably mounted on the guide rail (3). A groove (26) is provided at the bottom of the U-shaped plate (7). A slider (27) is slidably mounted on the inner wall of the groove (26). A fixing ring (8) is fixedly mounted on the top of the slider (27). A unidirectional ring is mounted on the outer surface of the fixing ring (8) near the connecting sleeve (6). A rotating ring (9) has multiple impact pillars (11) fixedly installed on its outer surface. The ends of the impact pillars (11) can abut against the closed end of the connecting cylinder (12). A one-way bearing (10) is installed between the rotating ring (9) and the fixed ring (8). A pushing assembly is installed between the connecting sleeve (6) and the rotating ring (9). The pushing assembly includes multiple trapezoidal grooves (14) evenly opened on the outer periphery of the connecting sleeve (6) near the fixed ring (8). Multiple guide plates (15) are fixedly installed at equal intervals on the outer periphery of the rotating ring (9). The plate (15) is inserted into the trapezoidal groove (14). The inner walls of the trapezoidal groove (14) on both sides are respectively a flat side and an inclined side. A storage spring (16) is fixedly installed between the side of the fixing ring (8) away from the connecting sleeve (6) and the outer surface of the U-shaped plate (7). A connecting assembly is installed between the connecting sleeve (6) and the connecting cylinder (12). The connecting assembly includes an opening (22) that passes through the outer periphery of the connecting cylinder (12). The inner wall of the connecting sleeve (6) corresponding to the opening (22) is provided with an installation groove (18). A locking block (20) is slidably installed inside the mounting groove (18). A clearance groove (24) is provided at the end of the connecting sleeve (6) without an opening. A spring rod (19) is fixedly installed on the inner wall of the end of the mounting groove (18) away from the connecting cylinder (12). The telescopic end of the spring rod (19) is fixedly installed on the outer surface of the locking block (20). One side of the locking block (20) is set with an inclined surface. A receiving groove (23) is provided on the outer periphery of the connecting cylinder (12) corresponding to the spring rod (19). The receiving groove (23) is used to store the locking block (20).

2. The energy-saving rock drilling rig with assisted drill bit extraction according to claim 1, characterized in that, A limiting ring (17) is fixedly installed on the inner wall of the connecting sleeve (6) away from the drilling rig (4), and the connecting cylinder (12) is installed between the limiting ring (17) and the end wall of the connecting sleeve (6).

3. The energy-saving rock drilling rig with assisted drill bit extraction according to claim 1, characterized in that, A reset spring (21) is installed inside the connecting cylinder (12), and the reset spring (21) is located between the end wall of the connecting cylinder (12) and the connecting sleeve (6).

4. The energy-saving rock drilling rig with assisted drill bit extraction according to claim 1, characterized in that, The outer periphery of the connecting sleeve (6) is provided with a limiting groove (25), and the U-shaped plate (7) is rotatably installed on the inner wall of the limiting groove (25).

5. The energy-saving rock drilling rig with assisted drill bit extraction according to claim 1, characterized in that, The end of the closed end of the connecting cylinder (12) is provided with a connecting hole (13), and the drill rod (5) is installed on the connecting cylinder (12) through the connecting hole (13).

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