A hole pulling drive structure for pipeline drilling

Abstract

The present invention is applicable to the technical field of pipe processing, and provides a hole pulling driving structure for pipe drilling, including a base plate, a moving plate, and a moving driving mechanism for driving the moving plate to move on the front surface of the base plate; a hollow driving shaft is rotatably arranged on the front surface of the mounting plate along its length direction, and an adjusting shaft is arranged in the inner cavity of the driving shaft along its length direction, and the adjusting shaft can rotate in the inner cavity of the driving shaft along the axis of the adjusting shaft. This hole pulling driving structure for pipe drilling changes the existing hole pulling driving structure, simplifies components such as the cylinder top cover, outer cover, elastic sheet, distance limiting column, and distance limiting groove sheet, the whole structure is simpler, the actions during drilling and hole pulling are more convenient, and it also avoids the costs of maintenance and replacement caused by component damage. By controlling the rotation angle of the adjusting shaft, the length of the rotary pulling needle extending out of the drill bit can be adjusted. When rotary pulling non-equal-diameter holes, the driving spindle of the rotary pulling needle extending out of the drill bit does not need to stop, and the processing efficiency is higher.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe processing, and particularly relates to a hole-pulling driving structure for pipe drilling. Background Art

[0002] The pipe systems of aerospace, automobiles, air conditioners, refrigerators, and solar water heaters are composed of a main pipe and branch pipes. In order to improve the stability after welding the main pipe and branch pipes, the main pipe needs to be flanged after drilling. The existing automatic hole-pulling equipment on the market clamps a drill bit on the driving spindle to drill holes. After drilling is completed, a conical rotating seat assembly with double helical lines is driven by a servo motor to rotate, and then two rotating pulling pins are pushed out a certain size from the drill bit. Then the spindle rotates upwards to turn out a shoulder shape for welding the branch pipe.

[0003] There are some deficiencies in the existing hole-pulling technology. After each drilling is completed, the main spindle needs to stop, and the cylinder pulls up the top cover to disengage the distance-limiting column from the first distance-limiting groove. The servo motor drives the conical rotating seat to rotate to the second distance-limiting groove, and then the cylinder moves downwards to make the distance-limiting column fall into the second distance-limiting groove. Repeated actions are required after each drilling is completed, resulting in low processing efficiency. Due to the adjustment error of the rotation angle and the friction between the distance-limiting column and the side wall of the distance-limiting groove, the distance-limiting column cannot accurately fall into the distance-limiting groove each time, resulting in abnormal hole diameter size and broken rotating pulling pins, and the hole-pulling effect is not good. Moreover, after the cylinder is pushed and pulled a certain number of times, the snap ring and the elastic piece will fatigue and fail, resulting in stuck and damaged hole-pulling heads, and the maintenance cost is relatively high. Summary of the Invention

[0004] The present invention provides a hole-pulling driving structure for pipe drilling, aiming to solve the problems that the existing automatic hole-pulling equipment needs to repeat actions after each drilling is completed, resulting in low processing efficiency, poor hole-pulling effect, and relatively high maintenance cost.

[0005] The present invention is implemented as follows. A hole-pulling driving structure for pipe drilling includes a base plate, a moving plate, and a moving driving mechanism for driving the moving plate to move on the front surface of the base plate.

[0006] A hollow driving shaft is rotatably arranged on the front surface of the moving plate along its length direction. An adjusting shaft is arranged in the inner cavity of the driving shaft along its length direction. The adjusting shaft can rotate in the inner cavity of the driving shaft along the axis of the adjusting shaft. A spiral groove is formed on the surface of the adjusting shaft. An annular shaft sleeve that slides along the length direction of the driving shaft is sleeved on the surface of the driving shaft. An adjusting pin is fixedly connected to the inner wall surface of the annular shaft sleeve. The inner end of the adjusting pin can movably penetrate into the inner cavity of the driving shaft and extend into the spiral groove. A through groove for the movement of the adjusting pin is formed on the side wall of the driving shaft along its length direction. When the adjusting pin moves along the length direction of the driving shaft, it pushes the adjusting shaft to rotate.

[0007] A outer shaft sleeve is sleeved on the surface of the annular shaft sleeve. A rotating bearing is arranged between the outer shaft sleeve and the annular shaft sleeve. The inner wall surface of the outer shaft sleeve is fixedly connected to the outer ring of the rotating bearing, and the outer wall surface of the annular shaft sleeve is fixedly connected to the inner ring of the rotating bearing;

[0008] One end of the drive shaft is provided with a drilling mechanism;

[0009] A sliding driving mechanism for driving the outer shaft sleeve to slide in the length direction of the drive shaft is arranged on the moving plate;

[0010] A rotating driving mechanism for driving the drive shaft to rotate is arranged on the surface of the moving plate.

[0011] Preferably, the drilling mechanism includes a rotating seat fixedly connected to the end of the drive shaft. The rotating seat is frustum-shaped. A drill bit is rotatably penetrated through the center of the rotating seat. One end of the drill bit penetrates into the inner cavity of the drive shaft and is pin-connected to the end of the adjusting shaft. The other end of the drill bit extends to the outside of the rotating seat. Two inclined holes extending from the side wall to the end are formed on the drill bit. A hole-pulling needle assembly is arranged in each inclined hole. Two spiral guiding grooves are arranged on the surface of the rotating seat. The other end of the hole-pulling needle assembly is slidably clamped into the inside of one of the spiral guiding grooves. When the adjusting shaft drives the drill bit to rotate forward relative to the rotating seat, one end of the hole-pulling needle assembly extends out of the drill bit. When the adjusting shaft drives the drill bit to rotate reversely relative to the rotating seat, one end of the hole-pulling needle assembly retracts into the drill bit.

[0012] Preferably, the hole-pulling needle assembly includes a moving block slidably arranged in the spiral guiding groove. A rotating pulling needle is fixedly connected to the surface of the moving block. One end of the rotating pulling needle extends into the inclined hole inside the drill bit.

[0013] Preferably, the moving driving mechanism includes a support frame arranged at one end of the substrate. A first driving motor is arranged on one side of the support frame. A first lead screw is rotatably arranged on the surface of the substrate along its length direction. The first driving motor is fixedly connected to one end of the first lead screw. A first lead screw sleeve is threadedly connected to the surface of the first lead screw. The top of the first lead screw sleeve is fixedly connected to the back surface of the moving plate.

[0014] Preferably, sliding blocks are fixedly connected to both sides of the back surface of the moving plate. Slide rails distributed along the length direction of the substrate are arranged on both sides of the front surface of the substrate. The sliding blocks are slidably connected to the slide rails.

[0015] Preferably, the sliding drive mechanism includes a second lead screw rotatably arranged on the front surface of the moving plate along the length direction of the drive shaft. A second lead screw sleeve is threadedly connected to the surface of the second lead screw. A regulating rod is fixedly connected to the surface of the second lead screw sleeve. The other end of the regulating rod is fixedly connected to the surface of the outer shaft sleeve. A second drive motor for driving the second lead screw to rotate is arranged on the surface of the moving plate.

[0016] Preferably, the rotational drive mechanism includes a third drive motor fixedly connected to the surface of the moving plate. A first transmission wheel is fixedly connected to the output shaft of the third drive motor. A second transmission wheel is fixedly sleeved on the surface of the drive shaft. The first transmission wheel and the second transmission wheel are connected by a transmission belt for transmission.

[0017] Preferably, support seats are fixedly connected to both ends of the front surface of the moving plate. The drive shaft is rotatably arranged inside the two support seats.

[0018] Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: A hole pulling drive structure for pipe drilling in the present invention changes the existing hole pulling drive structure, simplifies components such as the cylinder top cover, outer cover, elastic sheet, distance limiting column, and distance limiting groove sheet. The whole structure is simpler, the actions during drilling and hole pulling are more convenient, and it also avoids the costs of maintenance and replacement caused by component damage, reduces the time cost, and improves the work efficiency. By controlling the rotation angle of the adjusting shaft, the length of the rotary pulling needle extending out of the drill bit can be adjusted. When rotary pulling non-uniform diameter holes, the drive spindle of the rotary pulling needle extending out of the drill bit does not need to stop, and the processing efficiency is higher. It avoids problems such as abnormal hole diameter, broken needle, broken drill bit, and jamming during the operation of the existing hole pulling machine in the market, greatly shortens the time interval between drilling and hole pulling, improves the work efficiency, and creates higher value for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the moving drive mechanism in the present invention;

[0022] Figure 3 is a schematic structural diagram of the sliding drive mechanism and the rotational drive mechanism in the present invention;

[0023] Figure 4 is a cross-sectional view of the side view of the drive shaft in the present invention;

[0024] Figure 5 is a schematic structural diagram of the drilling mechanism in the present utility model;

[0025] Figure 6This is a schematic structural diagram of the hole-pulling needle assembly in this utility model.

[0026] In the figure: 1. Substrate; 2. First lead screw; 3. First lead screw sleeve; 4. Moving plate; 5. Support frame; 6. First driving motor; 7. Support seat; 8. Driving shaft; 9. Adjusting shaft; 10. Spiral groove; 11. Annular shaft sleeve; 12. Adjusting pin; 13. Adjusting rod; 14. Through groove; 15. Drilling mechanism; 151. Rotary seat; 152. Spiral guiding groove; 153. Drill bit; 154. Hole-pulling needle assembly; 1541. Moving block; 1542. Rotary hole-pulling needle; 16. Second lead screw; 17. Second lead screw sleeve; 18. Second driving motor; 19. Third driving motor; 20. First transmission wheel; 21. Second transmission wheel; 22. Sliding block; 23. Slide rail; 24. Outer shaft sleeve. Specific embodiments

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Please refer to Figures 1-6 , the present invention provides a technical solution: a hole-pulling driving structure for pipeline drilling, including a substrate 1, a moving plate 4, and a moving driving mechanism for driving the moving plate 4 to move on the front surface of the substrate 1;

[0029] The substrate 1 is fixedly installed on the equipment, and the whole hole-pulling driving structure can be installed in the vertical direction.

[0030] A hollow driving shaft 8 is rotatably arranged on the front surface of the moving plate 4 along its length direction. An adjusting shaft 9 is arranged in the inner cavity of the driving shaft 8 along its length direction. The adjusting shaft 9 can rotate in the inner cavity of the driving shaft 8 along the axis of the adjusting shaft 9. A spiral groove 10 is formed on the surface of the adjusting shaft 9. An annular shaft sleeve 11 that slides along the length direction of the driving shaft 8 is sleeved on the surface of the driving shaft 8. An adjusting pin 12 is fixedly connected to the inner wall surface of the annular shaft sleeve 11. The inner end of the adjusting pin 12 can movably penetrate into the inner cavity of the driving shaft 8 and extend into the inside of the spiral groove 10. A through groove 14 for the movement of the adjusting pin 12 is formed on the side wall of the driving shaft 8 along its length direction. When the adjusting pin 12 moves along the length direction of the driving shaft 8, it pushes the adjusting shaft 9 to rotate.

[0031] A bearing is arranged between the surface of the adjusting shaft 9 and the inner wall of the driving shaft 8, so that the adjusting shaft 9 can rotate relative to the driving shaft 8.

[0032] A surface of the annular shaft sleeve 11 is sleeved with an outer shaft sleeve 24. A rotating bearing is arranged between the outer shaft sleeve 24 and the annular shaft sleeve 11. An inner wall surface of the outer shaft sleeve 24 is fixedly connected to an outer ring of the rotating bearing, and an outer wall surface of the annular shaft sleeve 11 is fixedly connected to an inner ring of the rotating bearing. This enables the annular shaft sleeve 11 to rotate synchronously with the drive shaft 8 inside the outer shaft sleeve 24. Also, when the adjusting rod 13 drives the outer shaft sleeve 24 to move, the annular shaft sleeve 11 can move along the length direction of the drive shaft 8 together with the outer shaft sleeve 24, while the outer shaft sleeve 24 does not rotate and only moves along the length direction of the drive shaft 8.

[0033] There can be two adjusting pins 12, which are respectively arranged on both sides of the inner wall of the annular shaft sleeve 11 and inserted into the spiral groove 10 from both sides of the side wall of the drive shaft 8. There are also two through grooves 14.

[0034] The annular shaft sleeve 11 is slidably connected to the surface of the drive shaft 8. The annular shaft sleeve 11 can slide along the length direction of the drive shaft 8 but cannot rotate in the circumferential direction of the drive shaft 8 and can only rotate synchronously with the drive shaft 8.

[0035] A drilling mechanism 15 is arranged at one end of the drive shaft 8. The drilling mechanism 15 includes a rotating base 151 fixedly connected to the end of the drive shaft 8. The rotating base 151 is frustum-shaped. A drill bit 153 is rotatably penetrated through the center of the rotating base 151. One end of the drill bit 153 penetrates into the inner cavity of the drive shaft 8 and is pin-connected to the end of the adjusting shaft 9. The other end of the drill bit 153 extends outside the rotating base 151. Two inclined holes extending from the side wall to the end are formed on the drill bit 153. A hole-pulling needle assembly 154 is arranged in each inclined hole. Two spiral guide grooves 152 are arranged on the surface of the rotating base 151. The other end of the hole-pulling needle assembly 154 is slidably clamped inside one spiral guide groove 152. When the adjusting shaft 9 drives the drill bit 153 to rotate forward relative to the rotating base 151, one end of the hole-pulling needle assembly 154 extends outside the drill bit 153. When the adjusting shaft 9 drives the drill bit 153 to rotate backward relative to the rotating base 151, one end of the hole-pulling needle assembly 154 retracts into the drill bit 153.

[0036] The hole-pulling needle assembly 154 includes a moving block 1541. The moving block 1541 is slidably arranged inside the spiral guide groove 152. A rotary pulling needle 1542 is fixedly connected to the surface of the moving block 1541. One end of the rotary pulling needle 1542 extends into the inclined hole inside the drill bit 153.

[0037] During the working process, one end of the rotary pulling needle 1542 away from the moving block 1541 is inserted into the drill bit 153. According to the rotation direction of the drill bit 153, the relative position with the drill bit 153 is changed, and the moving block 1541 slides inside the spiral guide groove 152.

[0038] The width of the adjusting pin 12 is adapted to the spiral groove 10. When the adjusting pin 12 slides along the length direction of the adjusting shaft 9 in the spiral groove 10, the adjusting shaft 9 is driven to rotate.

[0039] During drilling, since the position of the adjusting pin 12 remains unchanged, the adjusting shaft 9 cannot rotate relative to the driving shaft 8. The driving shaft 8 rotates to drive the annular shaft sleeve 11 and the inner ring of the rotating bearing to rotate synchronously with the adjusting shaft 9. At the same time, the adjusting shaft 9 drives the drilling mechanism 15 to rotate. At this time, the rotary pulling needle 1542 of the hole pulling needle assembly 154 retracts into the drill bit 153, so that a regular drill bit is formed at the end of the drill bit 153 for drilling. When the drill bit 153 rotates, the moving plate 4 is driven by the moving driving mechanism to drive all the above structures to move downward, so that the drill bit 153 continuously penetrates downward during rotation, realizing drilling.

[0040] When the side wall of the pipeline is drilled through and the drill bit 153 extends into the pipeline, the outer shaft sleeve 24 is driven to slide along the length direction of the driving shaft 8. The annular shaft sleeve 11 is driven to slide upward along the driving shaft 8 while rotating with the driving shaft 8, thereby driving the adjusting pin 12 to slide upward. Since the adjusting pin 12 slides in the spiral groove 10, the adjusting shaft 9 is driven to rotate forward. The adjusting shaft 9 drives the drill bit 153 to rotate. The drill bit 153 rotates relative to the rotating base 151. Since the rotary pulling needle 1542 of the hole pulling needle assembly 154 is located inside the drill bit 153, the rotary pulling needle 1542 rotates synchronously with the drill bit 153, driving the moving block 1541 to slide in the spiral guiding groove 152. During the movement, under the guiding action of the spiral guiding groove 152, the moving block 1541 gradually moves toward the front end of the rotating base 151. The moving block 1541 gradually approaches the drill bit 153, so that one end of the rotary pulling needle 1542 located inside the drill bit 153 gradually extends out of the drill bit 153. After extending to an appropriate length, the annular shaft sleeve 11 stops moving. The moving plate 4 is driven by the moving driving mechanism to drive all the above structures to move upward, so that the drill bit 153 continuously pulls out upward during rotation. The part of the hole pulling needle assembly 154 protruding from the drill bit 153 pulls up the inner wall of the hole during the upward movement, realizing the effects of hole pulling and hole turning.

[0041] When the hole pulling is completed and the drilling mechanism 15 moves to the outside of the pipeline, the annular shaft sleeve 11 is driven to move downward, so that the adjusting shaft 9 rotates reversely, thereby driving the drill bit 153 to rotate reversely, and then driving the hole pulling needle assembly 154 to rotate reversely. Under the guiding action of the spiral guiding groove 152, the hole pulling needle assembly 154 gradually moves toward the rear end of the rotating base 151, gradually moving away from the drill bit 153, so that one end of the rotary pulling needle 1542 gradually retracts into the drill bit 153, restoring the shape of the drill bit 153 for the next drilling.

[0042] When the adjusting pin 12 moves to the uppermost position, the adjusting shaft 9 rotates forward to the limit position, and the length of one end of the rotary pulling needle 1542 extending out of the drill bit 153 reaches the longest. When the adjusting pin 12 moves downward, the adjusting shaft 9 rotates reversely, causing one end of the rotary pulling needle 1542 to retract into the interior of the drill bit 153. When the adjusting pin 12 moves to the lowermost position, the adjusting shaft 9 rotates reversely to the limit position, and the moving block 1541 moves to the upper end on the surface of the rotary base 151 and cannot move further. At this time, one end of the rotary pulling needle 1542 is still located inside the drill bit 153 and will not separate from the drill bit 153, resulting in the inability to extend out during the next operation.

[0043] During the entire adjustment process, the drive shaft 8 does not need to stop rotating and can always maintain a rotating state.

[0044] A sliding drive mechanism for driving the outer drive sleeve 24 to slide in the length direction of the drive shaft 8 is provided on the moving plate 4;

[0045] A rotary drive mechanism for driving the drive shaft 8 to rotate is provided on the surface of the moving plate 4.

[0046] Furthermore, the moving drive mechanism includes a support frame 5 provided at one end of the base plate 1. A first drive motor 6 is provided on one side of the support frame 5. A first lead screw 2 is rotatably provided on the surface of the base plate 1 along its length direction. The first drive motor 6 is fixedly connected to one end of the first lead screw 2. A first lead screw sleeve 3 is threadedly connected to the surface of the first lead screw 2. The top of the first lead screw sleeve 3 is fixedly connected to the back surface of the moving plate 4.

[0047] In this embodiment, the first drive motor 6 can rotate forward and backward. When the first drive motor 6 works, it drives the first lead screw 2 to rotate, thereby driving the first lead screw sleeve 3 to move up and down, and further driving the entire moving plate 4 to move, thus driving the drive shaft 8 and the drilling mechanism 15 and other devices to move downward as a whole to perform operations such as drilling and pulling out.

[0048] Furthermore, sliding blocks 22 are fixedly connected to both sides of the back surface of the moving plate 4. Slide rails 23 distributed along the length direction of the base plate 1 are provided on both sides of the front surface of the base plate 1. The sliding blocks 22 are slidably connected to the slide rails 23.

[0049] In this embodiment, during the movement of the moving plate 4, the sliding blocks 22 slide on the slide rails 23 to guide and support the moving plate 4, improving the stability during the movement process.

[0050] Furthermore, the sliding drive mechanism includes a second lead screw 16 rotatably provided on the front surface of the moving plate 4 along the length direction of the drive shaft 8. A second lead screw sleeve 17 is threadedly connected to the surface of the second lead screw 16. An adjusting rod 13 is fixedly connected to the surface of the second lead screw sleeve 17. The other end of the adjusting rod 13 is fixedly connected to the surface of the outer sleeve 24. A second drive motor 18 for driving the second lead screw 16 to rotate is provided on the surface of the moving plate 4.

[0051] The second driving motor 18 can rotate forward and backward. When the second driving motor 18 works, it drives the second lead screw 16 to rotate, thereby driving the second lead screw sleeve 17 to move upward or downward. Furthermore, it drives the outer shaft sleeve 24 to move upward or downward through the adjusting rod 13, thereby driving the annular shaft sleeve 11 to move, driving the adjusting pin 12 to move, and driving the adjusting shaft 9 to rotate forward or backward.

[0052] The rotation driving mechanism includes a third driving motor 19 fixedly connected to the surface of the moving plate 4. A first transmission wheel 20 is fixedly connected to the output shaft of the third driving motor 19. A second transmission wheel 21 is fixedly sleeved on the surface of the driving shaft 8. The first transmission wheel 20 and the second transmission wheel 21 are connected by a transmission belt.

[0053] The second transmission wheel 21 is annular and sleeved on the surface of the driving shaft 8.

[0054] When the third driving motor 19 works, it drives the first transmission wheel 20 to rotate, thereby driving the second transmission wheel 21 to rotate, and driving the driving shaft 8 to rotate, realizing the rotational drilling of the drilling mechanism 15.

[0055] Support seats 7 are fixedly connected to both ends of the front surface of the moving plate 4. The driving shaft 8 is rotatably arranged inside the two support seats 7. The inside of the support seat 7 is circular. A bearing is arranged between the driving shaft 8 and the inner wall surface of the support seat 7, enabling the driving shaft 8 to rotate normally.

[0056] Working principle and usage process of the present invention: After the present invention is installed, the third driving motor 19 works to drive the first transmission wheel 20 to rotate, thereby driving the second transmission wheel 21 to rotate, driving the drive shaft 8 to rotate, and further driving the adjustment shaft 9 and the drilling mechanism 15 to rotate synchronously. The second driving motor 18 works to drive the second lead screw 16 to rotate, thereby driving the second lead screw sleeve 17 to move downward, driving the outer shaft sleeve 24 to move upward or downward through the adjusting rod 13, thereby driving the annular shaft sleeve 11 to move. While the annular shaft sleeve 11 rotates with the drive shaft 8, it slides downward along the lower end of the drive shaft 8, thereby driving the adjusting pin 12 to slide downward, driving the adjusting pin 12 to move downward to drive the adjustment shaft 9 to reverse, so that one end of the rotary extraction needle 1542 retracts into the drill bit 153. Then the first driving motor 6 works to drive the first lead screw 2 to rotate, thereby driving the first lead screw sleeve 3 to move downward, and further driving the entire moving plate 4 to move downward, driving the structures on the moving plate 4 to move downward as a whole, so that the drill bit 153 moves downward during rotation to drill a hole; when the pipe side wall is drilled through and the drill bit extends into the pipe interior, the second driving motor 18 rotates forward to drive the second lead screw 16 to rotate, thereby driving the second lead screw sleeve 17 to move upward, driving the outer shaft sleeve 24 to move through the adjusting rod 13, and further driving the annular shaft sleeve 11 to move, driving the adjusting pin 12 to move upward to drive the adjustment shaft 9 to rotate forward, the adjustment shaft 9 drives the drill bit 153 to rotate, and the drill bit 153 rotates relative to the rotary base 151, so that the rotary extraction needle 1542 extends out of the drill bit 153 by a certain length and then stops. The third driving motor 19 works to drive the moving plate 4 and all the structures installed on the moving plate 4 to move upward again, realizing hole extraction and hole turning.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hole-pulling driving structure for pipe drilling, characterized in that: It includes a substrate (1), a moving plate (4), and a moving driving mechanism for driving the moving plate (4) to move on the front surface of the substrate (1); On the front surface of the moving plate (4), a hollow driving shaft (8) is rotatably arranged along its length direction. Inside the cavity of the driving shaft (8), an adjusting shaft (9) is arranged along its length direction. The adjusting shaft (9) can rotate in the cavity of the driving shaft (8) along the axis line of the adjusting shaft (9). A spiral groove (10) is formed on the surface of the adjusting shaft (9). A ring-shaped shaft sleeve (11) that slides along the length direction of the driving shaft (8) is sleeved on the surface of the driving shaft (8). An adjusting pin (12) is fixedly connected to the inner wall surface of the ring-shaped shaft sleeve (11). The inner end of the adjusting pin (12) can movably penetrate into the cavity of the driving shaft (8) and extend into the inside of the spiral groove (10). A through groove (14) for the movement of the adjusting pin (12) is formed on the side wall of the driving shaft (8) along its length direction. When the adjusting pin (12) moves along the length direction of the driving shaft (8), it pushes the adjusting shaft (9) to rotate; An outer shaft sleeve (24) is sleeved on the surface of the ring-shaped shaft sleeve (11). A rotating bearing is arranged between the outer shaft sleeve (24) and the ring-shaped shaft sleeve (11). The inner wall surface of the outer shaft sleeve (24) is fixedly connected to the outer ring of the rotating bearing, and the outer wall surface of the ring-shaped shaft sleeve (11) is fixedly connected to the inner ring of the rotating bearing; One end of the driving shaft (8) is provided with a drilling mechanism (15); On the moving plate (4), a sliding driving mechanism for driving the outer shaft sleeve (24) to slide along the length direction of the driving shaft (8) is provided; On the surface of the moving plate (4), a rotating driving mechanism for driving the driving shaft (8) to rotate is provided; The drilling mechanism (15) includes a rotating base (151) fixedly connected to the end of the driving shaft (8). The rotating base (151) is frustum-shaped. A drill bit (153) is rotatably penetrated through the axis of the rotating base (151). One end of the drill bit (153) penetrates into the cavity of the driving shaft (8) and is pin-connected to the end of the adjusting shaft (9). The other end of the drill bit (153) extends to the outside of the rotating base (151). Two inclined holes extending from the side wall to the end are formed on the drill bit (153). A hole-pulling needle assembly (154) is arranged in each inclined hole. Two spiral guiding grooves (152) are formed on the surface of the rotating base (151). The other end of the hole-pulling needle assembly (154) can be slidably clamped into the inside of one of the spiral guiding grooves (152). When the adjusting shaft (9) drives the drill bit (153) to rotate forward relative to the rotating base (151), one end of the hole-pulling needle assembly (154) extends out of the drill bit (153). When the adjusting shaft (9) drives the drill bit (153) to rotate reversely relative to the rotating base (151), one end of the hole-pulling needle assembly (154) retracts into the drill bit (153); Both ends of the front surface of the moving plate (4) are fixedly connected with support seats (7), and the driving shaft (8) is rotatably arranged inside the two support seats (7).

2. The hole extraction driving structure for pipe drilling according to claim 1, characterized in that: The hole-pulling needle assembly (154) includes a moving block (1541) which is slidably arranged inside the spiral guide groove (152). A rotary pulling needle (1542) is fixedly connected to the surface of the moving block (1541), and one end of the rotary pulling needle (1542) extends into the inclined hole inside the drill bit (153).

3. A hole extraction driving structure for pipeline drilling as described in claim 1, characterized in that: The moving driving mechanism includes a support frame (5) arranged at one end of the substrate (1). A first driving motor (6) is arranged on one side of the support frame (5). A first lead screw (2) is rotatably arranged on the surface of the substrate (1) along its length direction. The first driving motor (6) is fixedly connected to one end of the first lead screw (2). A first lead screw sleeve (3) is threadedly connected to the surface of the first lead screw (2), and the top of the first lead screw sleeve (3) is fixedly connected to the back surface of the moving plate (4).

4. The hole extraction driving structure for pipeline drilling according to claim 1, characterized in that: Sliding blocks (22) are fixedly connected to both sides of the back surface of the moving plate (4). Slide rails (23) distributed along the length direction of the substrate (1) are arranged on both sides of the front surface of the substrate (1), and the sliding blocks (22) are slidably connected to the slide rails (23).

5. A hole pulling driving structure for pipeline drilling according to claim 1, characterized in that: The sliding driving mechanism includes a second lead screw (16) rotatably arranged on the front surface of the moving plate (4) along the length direction of the driving shaft (8). A second lead screw sleeve (17) is threadedly connected to the surface of the second lead screw (16). An adjusting rod (13) is fixedly connected to the surface of the second lead screw sleeve (17), and the other end of the adjusting rod (13) is fixedly connected to the surface of the outer shaft sleeve (24). A second driving motor (18) for driving the second lead screw (16) to rotate is arranged on the surface of the moving plate (4).

6. The hole extraction driving structure for pipeline drilling according to claim 1, characterized in that: The rotating driving mechanism includes a third driving motor (19) fixedly connected to the surface of the moving plate (4). A first transmission wheel (20) is fixedly connected to the output shaft of the third driving motor (19). A second transmission wheel (21) is fixedly sleeved on the surface of the driving shaft (8), and the first transmission wheel (20) and the second transmission wheel (21) are connected by a transmission belt for transmission.

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