Pipe threading dredging device with detection function

Abstract

This invention discloses a pipe threading and unblocking device with detection function, belonging to the field of pipe threading technology. It includes a threading machine body, a variable diameter moving component on the outer wall of the machine body, an impact unblocking component inside the machine body, a camera with integrated lighting at the front end of the machine body, and a pneumatic stabilizing anchor and cable pulling frame at the rear end. By setting up the impact unblocking component, when the trigger ring touches the blockage, the striking pin is precisely released through the action of the sliding rod, compensation block, and the anti-sloping surface of the clamp, instantly opening the constant pressure piston and releasing a high-pressure pulse airflow along the jet pipe, achieving rapid impact removal of the blockage. After the unblocking action is completed, the device continues to move forward, simultaneously completing cable laying, significantly improving overall construction efficiency. The pneumatic stabilizing anchor effectively counteracts the recoil force generated by the high-pressure airflow at the moment the impact unblocking component is fired, ensuring the stability of the threading machine body during the impact process.

Description

Technical Field

[0001] This invention relates to the field of pipe threading technology, and in particular to a pipe threading and unblocking device with detection function. Background Technology

[0002] Cable conduits are the core channels for laying cables in various construction projects. After the conduits are laid, cables need to be installed inside using a cable pulling device. However, it is inevitable that gravel or concrete fragments will enter the cable conduits after installation, which means that workers need to clear the conduits before the cable pulling operation. In terms of wire threading operations, existing technologies mostly use steel wire or fiberglass conduit for manual guidance. When there is a blockage inside the pipe, the threader head is blocked and cannot move forward. Operators cannot visually understand the blockage inside the pipe, and it is often necessary to clear the blockage before threading, with the two processes being carried out separately. Even if there are a few devices that combine clearing and threading functions, their clearing method is mostly mechanical drilling, which has limited capacity to handle blockages, and may damage the inner wall of the pipe during the drilling process. Therefore, there is an urgent need for a pipe threading and dredging device that can integrate dredging and threading operations. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art by proposing a pipe threading and unblocking device with detection function.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A pipe threading and unblocking device with detection function includes a threading machine body, a variable diameter moving component on the outer wall of the threading machine body, an impact unblocking component inside the threading machine body, a camera with integrated lighting at the front end of the threading machine body, and a pneumatic stabilizing anchor and cable pulling frame at the rear end of the threading machine body. The variable diameter moving assembly includes a hinge seat, with two adaptive variable diameter brackets hinged to both ends of the hinge seat. A tension spring is installed between the two adaptive variable diameter brackets, which can swing around the hinge seat under the action of the tension spring, so that the drive wheel and the driven wheel always press against the inner wall of the pipe. The drive wheel and the driven wheel are respectively installed on the two adaptive variable diameter brackets. The impact unblocking component includes a mounting ring located at the center of the front end of the threading machine body. The center of the mounting ring is provided with a jet pipe for guiding high-pressure airflow. The front end of the mounting ring is provided with a trigger ring for directly contacting the blockage in the pipe to trigger the subsequent firing process. Above the rear end of the jet pipe is an actuating cylinder for releasing high-pressure airflow to impact the blockage. Above the actuating cylinder is an energy storage pusher. The actuating cylinder is provided with an air inlet pipe, a constant pressure chamber and an actuating chamber in sequence from the front end to the rear end. The constant pressure chamber is provided with a constant pressure piston and the actuating chamber is provided with a striking pin. The air inlet pipe is connected to an external high-pressure air source and continuously inputs compressed air into the constant pressure chamber. The pneumatic stabilizing anchor includes a ring-shaped frame with an annular air cavity inside. Multiple anchoring holes are formed along the outer periphery of the frame in the annular air cavity, and an anchoring piston rod is slidably disposed in the anchoring holes.

[0005] As a preferred embodiment, the trigger ring is provided with three limiting slide rods and one actuating slide rod arranged in a ring, wherein the actuating slide rod is located at the bottom, and a trigger reset spring is sleeved on the outer wall of the limiting slide rod and the actuating slide rod.

[0006] As a preferred embodiment, the front end of the constant pressure chamber is connected to the output end of the intake pipe, and an outlet valve is provided below the rear end of the constant pressure chamber, which is connected to the injection pipe.

[0007] As a preferred embodiment, the constant pressure piston is provided with an impact reset spring at one end near the intake pipe, and a trigger rod is provided at one end near the outlet valve, the trigger rod passing through the rear end of the constant pressure chamber.

[0008] As a preferred embodiment, a compensation block is installed at the rear end of the trigger rod, the compensation block is slidably connected to the action chamber, and the end of the compensation block is provided with an inclined surface.

[0009] As a preferred embodiment, the top of the action chamber is provided with a sliding groove, and a locking block is rotatably installed at the bottom of the action chamber. The front end of the locking block is provided with a firing reset spring, and the rear end of the locking block is provided with a reverse inclined surface that matches the compensation block.

[0010] As a preferred embodiment, the firing pin is provided with a head, a constricted neck, and a tail along the axial direction. The radial dimensions of the head and tail are both greater than the radial dimension of the constricted neck. The constricted neck is used to cooperate with the locking block to form a locking structure, so that the locking block can lock the firing pin. An energy storage spring is provided at the end of the firing pin away from the constant pressure chamber, and an actuating lug is provided at the top of the firing pin.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting up an impact unblocking component, when the trigger ring touches the blockage, the impact pin is precisely released through the cooperation of the sliding rod, the compensation block and the reverse inclined surface of the clamp, instantly opening the constant pressure piston and releasing high-pressure pulse airflow in a directional manner along the spray pipe, thereby achieving rapid impact and removal of the blockage. After the unblocking action is completed, the device continues to move forward, simultaneously completing the cable laying, significantly improving the overall construction efficiency.

[0012] 2. This invention sets a pneumatic stabilizing anchor at the rear end of the threading machine body. The annular air chamber is instantly inflated to drive the anchoring piston rod to extend radially and press against the inner wall of the pipe. At the moment the impact unblocking component is fired, it effectively counteracts the recoil force generated by the high-pressure air jet, ensuring the stability of the threading machine body during the impact process. It prevents the threading machine body from retreating or tilting due to recoil force, ensuring the consistency of the impact direction and the success rate of unblocking. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the back structure of a pipe threading and unblocking device with detection function proposed in this invention; Figure 2 This is a front structural schematic diagram of a pipe threading and unblocking device with detection function proposed in this invention. Figure 3 This is a schematic diagram of the internal structure of a pipe threading and unblocking device with detection function proposed in this invention. Figure 4 This is a cross-sectional view of the internal structure of the actuating cylinder in a pipe threading and unblocking device with detection function proposed in this invention; Figure 5 This is a cross-sectional view of the impact unblocking component in the energy storage state of a pipe threading and unblocking device with detection function proposed in this invention. Figure 6 This is a cross-sectional view of the impact unblocking component in a pipe threading and unblocking device with detection function proposed in this invention under impact conditions. Figure 7 This is a structural assembly diagram of the mounting ring and trigger ring in a pipe threading and unblocking device with detection function proposed in this invention; Figure 8 This is a cross-sectional view of the pneumatic stabilizing anchor in a pipe threading and unblocking device with detection function proposed in this invention.

[0014] In the diagram: 1. Cable threading machine body; 2. Camera; 3. Cable pulling frame; 4. Hinge seat; 5. Adaptive variable diameter frame; 6. Tension spring; 7. Drive wheel; 8. Driven wheel; 9. Mounting ring; 10. Injection pipe; 11. Trigger ring; 1101. Trigger return spring; 12. Actuating cylinder; 1201. Constant pressure chamber; 1202. Actuating chamber; 13. Energy storage cylinder; 14. Inlet pipe; 15. Constant pressure piston; 16. Strike pin; 17. Frame; 18. Annular air chamber; 19. Anchoring hole; 20. Anchoring piston rod; 21. Limiting slide rod; 22. Actuating slide rod; 23. Outlet valve; 24. Impact return spring; 25. Trigger rod; 26. Compensating block; 27. Locking iron; 28. Firing return spring; 29. ​​Actuating ear; 30. Energy storage spring. Detailed Implementation

[0015] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] Example, refer to Figures 1 to 8 A pipe threading and unblocking device with detection function includes a threading body 1, a variable diameter moving component on the outer wall of the threading body 1, an impact unblocking component inside the threading body 1, a camera 2 with an integrated lighting lamp at the front end of the threading body 1, and a pneumatic stabilizing anchor and a cable pulling frame 3 at the rear end of the threading body 1. The camera 2 is used to collect images of the inner wall of the pipe in real time and transmit them to an external control terminal to assist operators in identifying the type of blockage and the condition of pipe damage, providing visual reference. The cable pulling frame 3 is used to fix and drag the cable, realizing the integrated operation of unblocking and threading. The variable diameter moving assembly includes a hinge seat 4, with two adaptive variable diameter brackets 5 hinged to both ends of the hinge seat 4. A tension spring 6 is installed between the two adaptive variable diameter brackets 5. The preload of the tension spring 6 can be automatically adjusted according to the actual pipe diameter, so that the assembly can adapt to pipe diameter changes within a certain range and adaptively deflect when encountering bends to enhance passability. A drive wheel 7 and a driven wheel 8 are respectively installed on the two adaptive variable diameter brackets 5. The impact unblocking component includes a mounting ring 9 located at the center of the front end of the threading machine body 1. The center of the mounting ring 9 is provided with a jet pipe 10 for guiding high-pressure airflow. The front end of the mounting ring 9 is provided with a trigger ring 11 for directly contacting the blockage in the pipe to trigger the subsequent firing process. Above the rear end of the jet pipe 10 is an actuating cylinder 12 for releasing high-pressure airflow to impact the blockage. Above the actuating cylinder 12 is an energy storage pusher cylinder 13. The front opening of the jet pipe 10 is aligned with the direction of the blockage to ensure that the high-pressure airflow is concentrated and directionally sprayed. The advantage of using the above-mentioned impact unblocking component is that when the threading machine 1 moves to the blockage point and the trigger ring 11 touches the blockage, the impact unblocking component immediately starts mechanical linkage triggering, the constant pressure piston 15 opens the outlet valve 23, and the high pressure gas in the constant pressure chamber 1201 is concentrated and directionally sprayed out through the spray pipe 10 to perform instantaneous pulse impact to clear the blockage. The threading is completed at the same time as the unblocking action, realizing the one-time completion of the two processes of unblocking and threading. This can significantly shorten the overall operation time of pipeline maintenance, reduce the labor intensity and operation difficulty of manual repeated pipe laying, and greatly improve the overall efficiency and safety of pipeline construction operations. The actuator 12 is equipped with an air inlet pipe 14, a constant pressure chamber 1201, and an actuator chamber 1202, arranged sequentially from the front end to the rear end. The constant pressure chamber 1201 contains a constant pressure piston 15, and the actuator chamber 1202 contains a firing pin 16. The air inlet pipe 14 is connected to an external high-pressure air source and continuously supplies compressed air into the constant pressure chamber 1201. The constant pressure piston 15 can slide back and forth under air pressure to maintain the pressure stability of the constant pressure chamber 1201 and ensure consistent firing energy for each shot. The firing pin 16 is locked at the rear end of the actuator chamber 1202 in the ready-to-fire state. When the stored energy is released, it strikes the constant pressure piston 15 to open the airflow channel and achieve instantaneous jet ejection. It should be noted that the outer diameter of the constant pressure piston 15 is smaller than the inner diameter of the constant pressure chamber 1201, which can significantly reduce the frictional resistance when the piston moves backward, so that the constant pressure piston 15 moves instantaneously after the impact of the firing pin 16, allowing the outlet valve 23 to open quickly and ensuring the timely release of high-pressure gas pulses.

[0019] The pneumatic stabilizing anchor includes a ring-shaped frame 17 with an annular air chamber 18 inside. Multiple anchoring holes 19 are formed along the outer periphery of the frame 17 within the annular air chamber 18, and anchoring piston rods 20 are slidably disposed within the anchoring holes 19. The frame 17 is fixed to the rear end of the threading machine body 1. The annular air chamber 18 is connected to an external air source or a bypass air port of the constant pressure piston 15 via a pipe. When the impact unblocking component is about to fire, the annular air chamber 18 is instantly inflated, pushing each anchoring piston rod 20 to extend radially synchronously and press against the inner wall of the pipe to counteract the recoil force generated by the high-pressure air jet, ensuring that the threading machine body 1 remains stable at the moment of impact and preventing backward movement or tilting. Furthermore, the trigger ring 11 is provided with three limiting slide rods 21 and one actuating slide rod 22 arranged in a ring. The actuating slide rod 22 is located at the bottom. Trigger reset springs 1101 are sleeved on the outer walls of the limiting slide rods 21 and the actuating slide rod 22. The three limiting slide rods 21 are evenly distributed around the trigger ring 11 to ensure that the trigger ring 11 will not tilt or jam when subjected to axial pressure, and can only move in a direction parallel to the axis of the threading machine body 1. The actuating slide rod 22 is located at the bottom alone, and can push the subsequent mechanical triggering mechanism as the trigger ring 11 moves backward. After the obstacle is cleared or the trigger ring 11 is disengaged, the trigger reset spring 1101 drives the trigger ring 11 to automatically reset to the initial extended position, ready for the next trigger. The further advantages of the above-mentioned approach are that the three limiting slide bars 21 are evenly arranged in the circumferential direction, which can ensure that the trigger ring 11 only moves along the axis of the threading machine body 1 when subjected to the axial reaction force of the blockage, avoiding jamming or jamming due to skewed force, and greatly improving the reliability and consistency of the triggering action; the action slide bar 22 is independently located at the bottom, and its displacement can directly act on the mechanical triggering mechanism, which facilitates the accurate transmission and adjustment of the action stroke; the trigger return spring 1101 can automatically push the trigger ring 11 back to the initial extended position after the blockage is cleared, without manual intervention, and prepare for the next triggering, ensuring the continuous operation capability of the device.

[0020] Furthermore, a compensation block 26 is installed at the rear end of the actuating slide bar 22. The compensation block 26 is slidably connected to the actuating chamber 1202. The end of the compensation block 26 is provided with an inclined surface. The compensation block 26 is used to transmit the displacement of the actuating slide bar 22. Its end inclined surface cooperates with the reverse inclined surface of the locking iron 27 in the actuating chamber 1202, which can convert the axial movement of the actuating slide bar 22 into a component force that drives the locking iron 27 to rotate, thereby triggering the locking iron 27 to release the striking pin 16. Furthermore, the front end of the constant pressure chamber 1201 is connected to the output end of the intake pipe 14, and an outlet valve 23 is provided below the rear end of the constant pressure chamber 1201. The outlet valve 23 is connected to the injection pipe 10, and the outlet valve 23 is normally closed. Furthermore, the constant pressure piston 15 is provided with an impact return spring 24 at one end near the intake pipe 14, and a trigger rod 25 is provided at one end near the outlet valve 23. The trigger rod 25 passes through the rear end of the constant pressure chamber 1201. In the energy storage state, the constant pressure piston 15 is compressed by gas pressure and stores mechanical energy. When the firing pin 16 strikes the trigger rod 25, the constant pressure piston 15 moves instantaneously to open the outlet valve 23. The high pressure gas in the constant pressure chamber 1201 is released in a pulse through the injection pipe 10 in a very short time, forming a powerful impact airflow to realize the conversion of air pressure to mechanical energy. It should be noted that the constant pressure piston 15 also serves as the valve for the outlet valve 23.

[0021] The further advantage of adopting the above is that the constant pressure piston 15 also serves as the valve of the outlet valve 23, eliminating the need for an independent valve core structure, shortening the length of the airflow channel, reducing the pressure loss of high-pressure gas during transmission, and making the peak pressure of the impact airflow higher and the rising edge steeper; the trigger rod 25 passes through the rear end of the constant pressure chamber 1201 and is directly linked to the striker 16, shortening the response time from mechanical triggering to valve opening, realizing the rapid conversion of air pressure energy into mechanical energy, and enhancing the instantaneous impact and destructive force against blockages.

[0022] Furthermore, a sliding groove is provided on the top of the action chamber 1202, and a locking block 27 is rotatably installed at the bottom of the action chamber 1202. The front end of the locking block 27 is provided with a firing return spring 28, and the rear end of the locking block 27 is provided with a reverse inclined surface that matches the compensation block 26. The sliding groove is used to restrict the linear movement of the firing pin 16 along the axial direction and prevent deflection. The locking block 27 can swing up and down around its bottom pivot. In the ready-to-fire state, the front end of the locking block 27 is raised under the action of the firing return spring 28 and locks the firing pin 16 into the neck to achieve locking. When the compensation block 26 moves backward and pushes the rear end of the locking block 27 through the reverse inclined surface, the front end of the locking block 27 presses down to release the firing pin 16. After firing, the firing return spring 28 makes the locking block 27 automatically return to its position, preparing for the next locking. Furthermore, the firing pin 16 is provided with a head, a constricted neck and a tail along the axial direction. The radial dimensions of the head and the tail are both greater than the radial dimension of the constricted neck. The constricted neck is used to cooperate with the locking block 27 to form a locking structure, so that the locking block 27 can lock the firing pin 16. An energy storage spring 30 is provided at the end of the firing pin 16 away from the constant pressure chamber 1201, and an actuating ear 29 is provided at the top of the firing pin 16.

[0023] When using this invention, the operator first places the threading machine 1 at the inlet end of the pipe to be cleared, activates the camera 2 through the external control terminal and establishes an image transmission link, and simultaneously connects the external high-pressure air source to the air inlet pipe 14 of the actuating cylinder 12, so that compressed air is continuously input into the constant pressure chamber 1201. Under the action of air pressure, the constant pressure piston 15 closes the outlet valve 23, so that the pressure in the constant pressure chamber 1201 is maintained at a preset stable value to complete energy storage and close the outlet valve 23. The energy storage push cylinder 13 extends and pushes the firing pin 16 through the actuating ear 29 until the firing pin 16 is locked at the rear end of the actuating chamber 1202 by the front end of the locking iron 27 and the neck is retracted. The entire device enters the ready-to-fire state.

[0024] Subsequently, the operator controls the drive wheel 7 to rotate, driving the threading machine body 1 forward along the pipe axis. During the movement, the tension spring 6 automatically adjusts the preload according to the actual pipe diameter, ensuring that the adaptive diameter reducer 5 always maintains good contact between the drive wheel 7 and the driven wheel 8 and the inner wall of the pipe; When encountering a bend, the adaptive diameter reducer 5 adaptively deflects at the hinge seat 4 to ensure the threading machine body 1 passes smoothly. At the same time, the camera 2 at the front end of the threading machine body 1 collects real-time images of the inner wall of the pipe and transmits them back to the external control terminal. The operator monitors the internal condition of the pipe based on the transmitted images. When a blockage is detected, the pneumatic stabilizing anchor is activated. The annular air chamber 18 is instantly inflated through an external air source or the bypass air port of the constant pressure piston 15, pushing each anchoring piston rod 20 to extend radially synchronously and press against the inner wall of the pipe, increasing the friction between the threading machine body 1 and the pipe. Then, the threading machine body 1 continues to move forward until the trigger ring 11 touches the blockage.

[0025] After the trigger ring 11 contacts the blockage, it moves backward relative to the mounting ring 9 under the action of axial resistance. The three limit slides 21 ensure that the trigger ring 11 only moves along the axis of the threading machine body 1 without deflection. The actuating slide 22 then moves backward and pushes the compensation block 26 to slide along the actuating chamber 1202. The inclined surface at the end of the compensation block 26 cooperates with the reverse inclined surface at the rear end of the locking block 27, converting the axial displacement into a component force that drives the locking block 27 to rotate. The front end of the locking block 27 swings downward against the force of the firing reset spring 28, disengaging from the neck of the firing pin 16 and releasing the firing pin 16. Driven by the energy storage spring 30, the firing pin 16 moves forward at high speed along the slide groove and strikes the trigger rod 25 at the end of the constant pressure piston 15.

[0026] After the firing pin 16 strikes the trigger rod 25, the constant pressure piston 15 moves backward instantaneously, opening the outlet valve 23. The high-pressure gas pre-stored in the constant pressure chamber 1201 enters the injection pipe 10 through the outlet valve 23 and is concentrated and directionally ejected from the front opening of the injection pipe 10 to clear the blockage with an instantaneous pulse impact. After the impact is completed, the firing reset spring 28 pushes the front end of the locking iron 27 to lift and reset. The firing pin 16 retracts under the action of the energy storage spring 30 and is locked again by the locking iron 27. The impact reset spring 24 pushes the constant pressure piston 15 to reset and re-close the outlet valve 23. The constant pressure chamber 1201 continues to replenish gas, allowing the device to enter the ready-to-fire state again. After the blockage is cleared, the trigger reset spring 1101 drives the trigger ring 11 to automatically reset to the initial extended position, ready for the next trigger.

[0027] After the blockage is cleared, the operator continues to control the cable threading machine 1 to move forward along the pipeline. The cable on the cable traction frame 3 at the rear of the cable threading machine 1 naturally enters the pipeline as the machine moves forward, achieving simultaneous completion of unblocking and threading. When the cable threading machine 1 reaches the pipeline outlet or completes the predetermined threading length, the operator stops the drive wheel 7 via the control terminal, cuts off the external high-pressure air source, and depressurizes the annular air chamber 18, causing the anchor piston rod 20 to retract, thus removing the cable threading machine 1 from the end of the pipeline or pulling it back in the opposite direction, completing the integrated unblocking and threading operation for that section of the pipeline.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pipe threading and unblocking device with detection function, comprising a threading body (1), characterized in that, The outer wall of the threading machine body (1) is provided with a variable diameter moving component, the inside of the threading machine body (1) is provided with an impact unblocking component, the front end of the threading machine body (1) is provided with a camera (2) with integrated lighting, and the rear end of the threading machine body (1) is provided with a pneumatic stabilizing anchor and a cable pulling frame (3). The variable diameter moving assembly includes a hinge seat (4), with two adaptive variable diameter brackets (5) hinged at both ends of the hinge seat (4). A tension spring (6) is installed between the two adaptive variable diameter brackets (5). Under the action of the tension spring (6), the assembly can swing around the hinge seat (4) so ​​that the drive wheel (7) and the driven wheel (8) always press against the inner wall of the pipe. The drive wheel (7) and the driven wheel (8) are respectively installed on the two adaptive variable diameter brackets (5). The impact unblocking component includes an installation ring (9) located at the center of the front end of the threading machine body (1). The center of the installation ring (9) is provided with a jet pipe (10) for guiding high-pressure airflow. The front end of the installation ring (9) is provided with a trigger ring (11) for directly touching the blockage in the pipe to trigger the subsequent firing process. Above the rear end of the jet pipe (10) is an actuating cylinder (12) for releasing high-pressure airflow to impact the blockage. Above the actuating cylinder (12) is an energy storage pusher cylinder (13). The actuating cylinder (12) is provided with an air inlet pipe (14), a constant pressure chamber (1201) and an actuating chamber (1202) in sequence from the front end to the rear end. The constant pressure chamber (1201) is provided with a constant pressure piston (15), and the actuating chamber (1202) is provided with a striking pin (16). The air inlet pipe (14) is connected to an external high-pressure air source and continuously inputs compressed air into the constant pressure chamber (1201). The pneumatic stabilizing anchor includes a frame (17) arranged in a ring shape, an annular air cavity (18) is provided in the frame (17), and multiple anchoring holes (19) are opened on the annular air cavity (18) along the outer periphery of the frame (17), and an anchoring piston rod (20) is slidably arranged in the anchoring hole (19).

2. The pipe threading and unblocking device with detection function according to claim 1, characterized in that, The trigger ring (11) is provided with three limiting slide rods (21) and one action slide rod (22) arranged in a ring. The action slide rod (22) is located at the bottom. The outer walls of the limiting slide rods (21) and the action slide rod (22) are fitted with trigger reset springs (1101).

3. A pipe threading and unblocking device with detection function according to claim 2, characterized in that, The rear end of the actuation slide bar (22) is equipped with a compensation block (26), which is slidably connected to the actuation chamber (1202). The end of the compensation block (26) is provided with an inclined surface.

4. A pipe threading and unblocking device with detection function according to claim 1, characterized in that, The front end of the constant pressure chamber (1201) is connected to the output end of the air intake pipe (14), and an outlet valve (23) is provided below the rear end of the constant pressure chamber (1201). The outlet valve (23) is connected to the injection pipe (10).

5. A pipe threading and unblocking device with detection function according to claim 4, characterized in that, The constant pressure piston (15) is provided with an impact return spring (24) at one end near the intake pipe (14), and a trigger rod (25) is provided at one end near the outlet valve (23). The trigger rod (25) passes through the rear end of the constant pressure chamber (1201).

6. A pipe threading and unblocking device with detection function according to claim 3, characterized in that, The top of the action chamber (1202) is provided with a sliding groove, and a locking block (27) is rotatably installed at the bottom of the action chamber (1202). The front end of the locking block (27) is provided with a firing reset spring (28), and the rear end of the locking block (27) is provided with a reverse inclined surface that matches the compensation block (26).

7. A pipe threading and unblocking device with detection function according to claim 6, characterized in that, The striker (16) is provided with a head, a constricted neck and a tail along the axial direction. The radial dimensions of the head and the tail are both greater than the radial dimension of the constricted neck. The constricted neck is used to cooperate with the locking block (27) to form a locking structure, so that the locking block (27) can lock the striker (16). The end of the striker (16) away from the constant pressure chamber (1201) is provided with an energy storage spring (30). The top of the striker (16) is provided with an actuating ear (29).

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