A marine surveying detector pin extractor

Abstract

The application discloses a marine exploration detector pin pulling device, which solves the technical problem of difficult disassembly of the detector pin. The device comprises a support frame, a limiting cylinder for inserting the detector is arranged on the support frame, a gap is arranged on the limiting cylinder, a support block is slidably connected to the support frame, the sliding direction of the support block is perpendicular to the axial direction of the limiting cylinder, a driving element for controlling the sliding of the support frame is arranged on the support frame, a pin pulling cylinder is arranged on the support block, the axial direction of the pin pulling cylinder is perpendicular to the axial direction of the limiting cylinder, the pin pulling cylinder is aligned with the gap, a pin pulling rod is coaxially movably arranged in the pin pulling cylinder, a limiting ring is arranged at the end of the pin pulling cylinder to block the movement of the pin pulling rod towards the limiting cylinder, and a pin pulling screw for threadedly connecting with a pin pulling groove is coaxially arranged on the pin pulling rod. The application can make the disassembly process of the detector more convenient and fast, improve the operation efficiency, and reduce the risk of damage of the pin and the protective shell.

Description

Technical Field

[0001] This invention belongs to the field of detector maintenance technology, specifically relating to a pin-pulling device for marine exploration detectors. Background Technology

[0002] Currently, marine seismic exploration typically involves artificially generating seismic waves, which are then reflected by the strata and received by submarine cables. The MEMS detectors in these submarine cable acquisition systems frequently require maintenance due to malfunctions. A typical MEMS detector consists of a detector body and a protective casing. The detector body is riveted to the protective casing on both sides by one long pin and three short pins, with the long pin and short pins spaced 90° apart. Each pin also has a pull-out groove at its end for threaded engagement with external tools.

[0003] Currently, when disassembling a detector, an external tool is usually screwed into the pin pull slot, and then the operator pulls the external screw to pull out the pin. Once all the pins have been pulled out, the detector body can be pulled out of the protective casing.

[0004] However, manually removing the pins by hand is extremely laborious, increasing the workload for workers and affecting work efficiency. Furthermore, when removing the pins by hand, the pulling force is often not parallel to the pin's axis, easily causing the pin to bend and potentially damaging the protective casing. This makes the pins and casings unusable, increasing maintenance costs and requiring improvement. Summary of the Invention

[0005] In order to solve all or part of the above problems, the purpose of this invention is to provide a device for removing pins from marine exploration detectors, which makes the disassembly process of the detectors more convenient and faster, reduces the burden on workers, improves work efficiency, reduces the risk of damage to pins and protective shells, and ensures that pins and protective shells can be recycled and reused, thereby reducing maintenance costs.

[0006] This invention provides a device for pulling out pins of a marine exploration detector, comprising:

[0007] The support frame serves a supporting function;

[0008] A limiting cylinder is provided on the support frame, and the detector can be inserted into the limiting cylinder;

[0009] A clearance opening is provided on the limiting cylinder. When the detector is inserted into the limiting cylinder, one or more of the long pins or short pins of the detector can be aligned with the clearance opening.

[0010] A support block is slidably connected to the support frame, and the sliding direction of the support block is perpendicular to the axial direction of the limiting cylinder;

[0011] A driving component is mounted on the support frame and is used to control the sliding of the support block;

[0012] A pin-pulling cylinder is disposed on the support block, the axis of the pin-pulling cylinder is perpendicular to the axis of the limiting cylinder, and the pin-pulling cylinder is aligned with the clearance opening;

[0013] A pin rod is movably inserted into the pin-pulling cylinder, and the pin rod and the pin-pulling cylinder are coaxially arranged.

[0014] A limiting ring is provided at one end of the pin-pulling cylinder facing the limiting cylinder, and the limiting ring is used to prevent the pin-pulling rod from moving toward the limiting cylinder;

[0015] A pull pin screw is coaxially disposed at one end of the pull pin rod facing the limiting cylinder. The pull pin screw passes through the limiting ring and is used for threaded connection with the pull pin grooves on the long pin and the short pin.

[0016] Optionally, the limiting cylinder is provided with a guide port, the length direction of the guide port is parallel to the axial direction of the limiting cylinder, and the guide port is connected to the relief port so that the long pin can slide along the guide port and enter the relief port.

[0017] Optionally, the clearance opening is elongated, and the length direction of the clearance opening is perpendicular to the axial direction of the limiting cylinder. When the long pin enters the clearance opening, the detector can rotate along its own axial direction and make the long pin slide along the clearance opening.

[0018] The relief opening has an arc of 90°, and the relief opening forms a first limiting surface and a second limiting surface on the two inner sidewalls parallel to the axial direction of the limiting cylinder. When the long pin abuts against the first limiting surface, the pin pull groove on the long pin and the pin pull screw are aligned. When the long pin abuts against the second limiting surface, the pin pull groove on the short pin adjacent to the long pin and the pin pull screw are aligned.

[0019] Optionally, the support frame includes two support bases, the limiting cylinder is fixed on one of the support bases, the two support bases are connected by a pair of parallel guide rods, the axial direction of the guide rods is perpendicular to the axial direction of the limiting cylinder, and the support block is slidably engaged with the pair of guide rods.

[0020] Optionally, the driving component includes a drive screw and a drive handwheel. The drive screw is located between a pair of guide rods and passes through the support block and is threadedly engaged with the support block. One end of the drive screw is rotatably connected to one of the support bases, and the other end is threadedly connected to the other support base. The drive handwheel is fixed to the drive screw.

[0021] Optionally, the support block is provided with a limiting block and a clamping block, the pin-pulling cylinder is movably disposed between the limiting block and the clamping block, the limiting block is fixedly connected to the support block, the clamping block is slidably connected to the support block, and the sliding direction of the clamping block is perpendicular to the axial direction of the pin-pulling cylinder. The support block is provided with a control element for controlling the sliding of the clamping block, so that the clamping block and the limiting block can jointly clamp the pin-pulling cylinder.

[0022] Optionally, the control component includes a control screw and a control handwheel. The control screw is threadedly connected to the support block, and one end of the control screw is rotatably connected to the clamping block, while the other end is fixedly connected to the control handwheel.

[0023] Optionally, the limiting block and the clamping block are respectively provided with arc-shaped positioning grooves on their sides that are close to each other, and the outer side wall of the limiting cylinder matches the inner side wall of the positioning groove, so that the inner side walls of the two positioning grooves can clamp the pin-pulling cylinder together.

[0024] Optionally, a positioning ring is provided at the end of the pin-pulling cylinder away from the limiting cylinder, and the side of the positioning ring facing the limiting cylinder can abut against and limit the limiting block and the clamping block.

[0025] Optionally, the pull rod includes a pull rod and a limiting nut. The screw of the pull screw passes through the limiting nut. The end of the limiting nut is provided with a stepped groove for the nut of the pull screw to be engaged. The pull rod is prismatic and the end of the pull rod is provided with a mounting groove. The limiting nut is threadedly connected to the mounting groove and presses the nut of the pull screw against the bottom of the mounting groove.

[0026] As can be seen from the above technical solution, the marine exploration detector pin-pulling device provided by the present invention has the following advantages:

[0027] This makes the disassembly process of the detector more convenient and faster, reduces the burden on the staff, improves work efficiency, reduces the risk of damage to the pins and protective shell, and ensures that the pins and protective shell can be recycled and reused, thereby reducing maintenance costs.

[0028] Other features and advantages of the present invention will be set forth in the following description. Attached Figure Description

[0029] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0030] Figure 1 This is a schematic diagram of the overall structure of the pin-pulling device in an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of the pin-pulling cylinder in an embodiment of the present invention;

[0032] Figure 3 This is a cross-sectional view of the limiting cylinder in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the detector and the limiting cylinder in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the support frame in an embodiment of the present invention;

[0035] Figure 6 This is an exploded view of the pull pin in an embodiment of the present invention;

[0036] Figure 7 This is a cross-sectional view of the pull pin in an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Support frame; 101. Support base; 102. Guide rod; 2. Limiting cylinder; 3. Clearance opening; 4. Support block; 5. Driving component; 51. Drive screw; 52. Drive handwheel; 6. Pull pin cylinder; 7. Pull pin rod; 71. Pull rod; 72. Limiting nut; 73. Step groove; 74. Mounting groove; 8. Limiting ring; 9. Pull pin screw; 10. Guide opening; 11. First limiting surface; 12. Second limiting surface; 13. Limiting block; 14. Clamping block; 15. Control component; 151. Control screw; 152. Control handwheel; 16. Positioning groove; 17. Positioning ring;

[0039] 100. Detector; 200. Long pin; 300. Short pin; 400. Pin puller slot. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be arbitrarily combined with each other.

[0041] like Figures 1-7 The illustration shows an embodiment of the present invention, which discloses a device for removing pins from a marine exploration detector. The device includes a support frame 1, on which a cylindrical limiting cylinder 2 is fixedly connected. The inner diameter of the limiting cylinder 2 is slightly larger than the outer diameter of the detector 100, allowing the detector 100 to be inserted into the limiting cylinder 2. Simultaneously, the limiting cylinder 2 is provided with a clearance opening 3, so that when the detector 100 is inserted into the limiting cylinder 2, one or more of the long pins 200 and short pins 300 of the detector 100 can align with the clearance opening 3.

[0042] In one embodiment, such as Figure 1 As shown, a support block 4 is slidably connected to the support frame 1, and the sliding direction of the support block 4 is perpendicular to the axial direction of the limiting cylinder 2. At the same time, a driving component 5 is provided on the support frame 1, and the driving component 5 is used to control the sliding of the support block 4.

[0043] In one embodiment, such as Figure 1 , Figure 2 As shown, a cylindrical pin-pulling cylinder 6 is provided on the support block 4. The axial direction of the pin-pulling cylinder 6 is perpendicular to the axial direction of the limiting cylinder 2, and the pin-pulling cylinder 6 is aligned with the relief opening 3. A pin-pulling rod 7 is coaxially and movably arranged inside the pin-pulling cylinder 6, that is, the pin-pulling rod 7 can slide and rotate inside the pin-pulling cylinder 6.

[0044] In one embodiment, such as Figure 1 , Figure 2 As shown, a limiting ring 8 is provided at one end of the pin-pulling cylinder 6 facing the limiting cylinder 2, and the limiting ring 8 is used to prevent the pin-pulling rod 7 from moving toward the limiting cylinder 2. A pin-pulling screw 9 is coaxially provided at one end of the pin-pulling rod 7 facing the limiting cylinder 2. The pin-pulling screw 9 passes through the limiting ring 8 and is used to be threadedly connected to the pin-pulling groove 400 on the long pin 200 or the short pin 300.

[0045] When it is necessary to remove the long pin 200 or the short pin 300, insert the detector 100 into the limiting cylinder 2, align the long pin 200 or the short pin 300 with the relief opening 3, and ensure that the pin removal groove 400 on the long pin 200 or the short pin 300 is aligned with the pin removal screw 9. Then, rotate the pin removal rod 7 to make the pin removal screw 9 threadedly connected to the pin removal groove 400. Immediately afterwards, the drive component 5 controls the support block 4 to move the pin removal cylinder 6 away from the limiting cylinder 2. At this time, the limiting ring 8 abuts against the pin removal rod 7 to limit the movement, so that the pin removal rod 7 and the pin removal screw 9 can move synchronously with the pin removal cylinder 6, that is, the pin removal screw 9 can pull out the long pin 200 or the short pin 300.

[0046] The marine exploration detector pin-pulling device in this embodiment makes the disassembly of the detector more convenient and faster. Compared with manual pin-pulling by workers, this design reduces the burden on workers and improves work efficiency. Simultaneously, the pin is pulled out using the pin-pulling screw 9. Since the axis of the pin-pulling screw 9 is parallel to the axis of the pin, it can provide a force parallel to the pin's axis, allowing the pin to be pulled out without damage. This reduces the risk of damage to the pin and protective shell, ensuring that the pin and protective shell can be recycled and reused, thereby reducing maintenance costs.

[0047] In one embodiment, such as Figure 1 , Figure 3As shown, the limiting cylinder 2 is provided with a guide port 10. The length direction of the guide port 10 is parallel to the axial direction of the limiting cylinder 2. The guide port 10 is connected to the relief port 3 so that the long pin 200 can slide along the guide port 10 and enter the relief port 3. This design allows the worker to align the long pin 200 with the guide port 10 when performing the pin removal operation, making it easier for the worker to observe the position of the long pin 200 and thus facilitating the pin removal operation.

[0048] In one embodiment, such as Figure 1 , Figure 3 As shown, the relief port 3 is elongated, and the length direction of the relief port 3 is perpendicular to the axial direction of the limiting cylinder 2. When the long pin 200 enters the relief port 3, the detector 100 can rotate along its own axial direction and make the long pin 200 slide along the relief port 3.

[0049] In one embodiment, such as Figure 3 , Figure 4 As shown, the arc of the relief opening 3 is 90°, and the relief opening 3 forms a first limiting surface 11 and a second limiting surface 12 on the two inner sidewalls parallel to the axis of the limiting cylinder 2. When the long pin 200 abuts against the first limiting surface 11, the pin pull groove 400 and the pin pull screw 9 on the long pin 200 are aligned. When the long pin 200 abuts against the second limiting surface 12, the pin pull groove 400 and the pin pull screw 9 on the short pin 300 adjacent to the long pin 200 are aligned.

[0050] Reference Figure 4 To more clearly demonstrate the pin-pulling device, the pin-pulling operation of the detector is as follows:

[0051] The three short pins on the detector are named the first short pin, the second short pin, and the third short pin in a counter-clockwise direction, with the long pin located between the first and third short pins. When removing the pins from the detector, align the long pin with the guide port 10 and insert the detector into the limiting cylinder 2 until the long pin enters the clearance port 3. Then, rotate the detector clockwise until the long pin abuts against the second limiting surface 12. At this point, the pin-removing groove on the second short pin aligns with the pin-removing screw 9. Next, thread the pin-removing screw 9 onto the pin-removing groove on the second short pin to remove it. Then, remove the second short pin from the pin-removing screw 9 and reinstall the pin-removing screw 9 and other components.

[0052] Next, rotate the detector counterclockwise until the long pin abuts against the first limiting surface 11. At this point, the pin-pulling groove on the long pin aligns with the pin-pulling screw 9. Then, repeat the above pin-pulling and resetting operation. Subsequently, rotate the detector clockwise until the pin-pulling groove on the third short pin aligns with the pin-pulling screw 9. Then, repeat the above pin-pulling operation to partially pull out the third short pin.

[0053] Then, rotate the detector clockwise until the third short pin abuts against the second limiting surface 12. At this point, the pin-pulling groove on the fourth short pin aligns with the pin-pulling screw 9. Repeat the pin-pulling and resetting operation. Finally, rotate the detector counterclockwise until the third short pin abuts against the first limiting surface 11. At this point, the pin-pulling groove on the third short pin aligns with the pin-pulling screw 9. Repeat the pin-pulling and resetting operation to remove the long and short pins on one side of the detector. Then, insert the other end of the detector into the limiting cylinder 2 and repeat the above operation to remove the pins from the detector.

[0054] By setting a unique clearance opening 3, the clearance opening 3 can realize the positioning of the detector 100. The long pin 200 and its adjacent short pin 300 form a group, and the remaining two short pins 300 form a group. The two pins in each group can be positioned with each other through the first limiting surface 11 and the second limiting surface 12, so that the pin pulling groove 400 on the pin is automatically aligned with the pin pulling screw 9, which facilitates the pin pulling operation of the staff and improves the work efficiency.

[0055] In one embodiment, such as Figure 1 , Figure 5 As shown, the support frame 1 includes two support bases 101. The limiting cylinder 2 is welded and fixed to one of the support bases 101. The two support bases 101 are connected by a pair of parallel guide rods 102. The axial direction of the guide rods 102 is perpendicular to the axial direction of the limiting cylinder 2. The support block 4 is slidably engaged with the pair of guide rods 102 so that the support block 4 can drive the pin-pulling cylinder 6 and the pin-pulling rod 7 and other components to slide smoothly.

[0056] In one embodiment, such as Figure 1 , Figure 5 As shown, the driving component 5 includes a driving screw 51 disposed between a pair of guide rods 102. The driving screw 51 passes through the support block 4 and is threadedly engaged with the support block 4. Simultaneously, one end of the driving screw 51 is rotatably connected to one of the support bases 101, and the other end passes through the other support base 101 and is threadedly connected to it. A driving handwheel 52 is fixedly connected to the end of the handwheel. Rotating the driving handwheel 52 causes the driving screw 51 to rotate, and the driving screw 51 then controls the support block 4 to slide smoothly, thereby providing a uniform force to components such as the pull pin 7.

[0057] In one embodiment, such as Figure 1 , Figure 5As shown, the support block 4 is provided with a limiting block 13 and a clamping block 14. The pin-pulling cylinder 6 is movably disposed between the limiting block 13 and the clamping block 14, meaning the pin-pulling cylinder 6 can be disassembled. The limiting block 13 is fixedly connected to the support block 4, and the clamping block 14 is slidably connected to the support block 4, with the sliding direction of the clamping block 14 perpendicular to the axial direction of the pin-pulling cylinder 6. Simultaneously, the support block 4 is provided with a control element 15 for controlling the sliding of the clamping block 14, so that the clamping block 14 and the limiting block 13 can jointly clamp the pin-pulling cylinder 6.

[0058] In one embodiment, such as Figure 1 , Figure 5 As shown, the control component 15 includes a control screw 151 and a control handwheel 152. The control screw 151 is threadedly connected to the support block 4, and one end of the control screw 151 is rotatably connected to the clamping block 14, while the other end is fixedly connected to the control handwheel 152. Rotating the control handwheel 152 drives the control screw 151 to rotate, which in turn drives the clamping block 14 to move toward the limiting block 13, causing the clamping block 14 and the limiting block 13 to clamp the pin-pulling cylinder 6 together.

[0059] In one embodiment, such as Figure 1 , Figure 5 As shown, the limiting block 13 and the clamping block 14 are respectively provided with arc-shaped positioning grooves 16 on their adjacent sides, and the outer wall of the limiting cylinder 2 matches the inner wall of the positioning groove 16, so that the inner walls of the two positioning grooves 16 can jointly clamp the pin-pulling cylinder 6. This design can limit the installation position of the limiting cylinder 2, and at the same time improve the clamping and limiting effect of the limiting cylinder 2, reducing the risk of displacement of the limiting cylinder 2.

[0060] In one embodiment, such as Figure 1 , Figure 5 As shown, a positioning ring 17 is provided at the end of the pin-pulling cylinder 6 away from the limiting cylinder 2. The side of the positioning ring 17 facing the limiting cylinder 2 can abut against the limiting block 13 and the clamping block 14 to limit the position, so as to facilitate the workers to quickly determine the installation position of the limiting cylinder 2 and improve the work efficiency.

[0061] In one embodiment, such as Figure 6 , Figure 7 As shown, the pin-pulling rod 7 includes a pulling rod 71 and a limiting nut 72. The screw of the pin-pulling screw 9 passes through the limiting nut 72, and the end of the limiting nut 72 is provided with a stepped groove 73 for the nut of the pin-pulling screw 9 to be engaged.

[0062] In one embodiment, such as Figure 6 , Figure 7 As shown, the pull rod 71 is prismatic, and the edge of the pull rod abuts against the inner wall of the pull pin cylinder 6. The end of the pull rod 71 is provided with a mounting groove 74. The limiting nut 72 is threadedly connected to the mounting groove 74 and presses the nut of the pull pin screw 9 into the bottom of the mounting groove 74.

[0063] In one embodiment, such as Figure 1 , Figure 2 As shown, the limiting nut 72 can abut against the limiting ring 8 to limit the movement, so that when the pin-pulling cylinder 6 moves away from the limiting cylinder 2, the pin-pulling rod 7, the limiting nut 72, and the pin-pulling screw 9 can move synchronously with the pin-pulling cylinder 6.

[0064] This design allows for the removal of the pin screw 9, enabling workers to replace it individually when it is damaged, thus reducing maintenance costs. The prismatic pull rod 71 increases friction with the worker's hand, ensuring rapid rotation of the pull rod 71. Simultaneously, the edge of the pull rod abuts against the inner wall of the pin-pulling cylinder 6, limiting the position of the pull rod 71. The pull rod 71 remains coaxial with the pin-pulling cylinder 6, providing a stable pulling force for the pin screw 9.

[0065] As can be seen from the above process, the use of this pin-pulling device has the following advantages:

[0066] (1) The pin-pulling device can provide a force parallel to the pin axis, and the pulling force provided by the drive screw 51 is relatively uniform, which can realize the pin-pulling without damage.

[0067] (2) Quick disassembly and assembly, specially designed for MEMS detectors. When the detector is installed in the limiting cylinder 2, the pin pull slot on the pin can be aligned with the pin pull screw 9, so as to quickly disassemble the pin and reduce maintenance time.

[0068] (3) Save manpower. The use of the lead screw 51 is more labor-saving and reduces the burden on the staff.

[0069] (4) Provides clamping and positioning effect. The clamping force can be adjusted by using the control screw 151. The limiting grooves on the limiting block 13 and the pressing block 14 match the pin pulling cylinder 6 to achieve automatic centering of the pin pulling cylinder 6.

[0070] (5) The prism design of the pull rod 71 can provide greater friction, making it easier to screw the pull pin 7 in.

[0071] It should be noted that, unless otherwise stated, the technical or scientific terms used in this invention should have the ordinary meaning as understood by one of ordinary skill in the art.

[0072] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for pulling out pins of a marine exploration detector, characterized in that, include: The support frame (1) serves a supporting function; A limiting cylinder (2) is provided on the support frame (1), and the detector (100) can be inserted into the limiting cylinder (2); A clearance opening (3) is provided on the limiting cylinder (2). When the detector (100) is inserted into the limiting cylinder (2), one or more of the long pin (200) or short pin (300) of the detector (100) can be aligned with the clearance opening (3). The support block (4) is slidably connected to the support frame (1), and the sliding direction of the support block (4) is perpendicular to the axial direction of the limiting cylinder (2); A driving component (5) is disposed on the support frame (1) and is used to control the sliding of the support block (4); A pin-pulling cylinder (6) is disposed on the support block (4). The axial direction of the pin-pulling cylinder (6) is perpendicular to the axial direction of the limiting cylinder (2), and the pin-pulling cylinder (6) is aligned with the relief port (3). A pull pin rod (7) is movably inserted into the pull pin cylinder (6), and the pull pin rod (7) and the pull pin cylinder (6) are coaxially arranged. A limiting ring (8) is provided at one end of the pin-pulling cylinder (6) facing the limiting cylinder (2), and the limiting ring (8) is used to prevent the pin-pulling rod (7) from moving towards the limiting cylinder (2); A pull pin screw (9) is coaxially disposed at one end of the pull pin rod (7) facing the limiting cylinder (2). The pull pin screw (9) passes through the limiting ring (8) and is used for threaded connection with the pull pin groove (400) on the long pin (200) or the short pin (300).

2. The pin-pulling device according to claim 1, characterized in that, The limiting cylinder (2) is provided with a guide port (10), the length direction of the guide port (10) is parallel to the axial direction of the limiting cylinder (2), and the guide port (10) is connected to the relief port (3) so that the long pin (200) can slide along the guide port (10) and enter the relief port (3).

3. The pin-pulling device according to claim 2, characterized in that, The clearance opening (3) is elongated, and the length direction of the clearance opening (3) is perpendicular to the axial direction of the limiting cylinder (2). When the long pin (200) enters the clearance opening (3), the detector (100) can rotate along its own axial direction and make the long pin (200) slide along the clearance opening (3). The arc corresponding to the relief opening (3) is 90°, and the relief opening (3) forms a first limiting surface (11) and a second limiting surface (12) on two inner sidewalls parallel to the axial direction of the limiting cylinder (2). When the long pin (200) abuts against the first limiting surface (11), the pin pull groove (400) on the long pin (200) and the pin pull screw (9) are aligned. When the long pin (200) abuts against the second limiting surface (12), the pin pull groove (400) on the short pin (300) adjacent to the long pin (200) and the pin pull screw (9) are aligned.

4. The pin-pulling device according to claim 1, characterized in that, The support frame (1) includes two support bases (101), and the limiting cylinder (2) is fixed on one of the support bases (101). The two support bases (101) are connected by a pair of parallel guide rods (102). The axial direction of the guide rods (102) is perpendicular to the axial direction of the limiting cylinder (2), and the support block (4) slides with the pair of guide rods (102).

5. The pin-pulling device according to claim 4, characterized in that, The drive component (5) includes a drive screw (51) and a drive handwheel (52). The drive screw (51) is located between a pair of guide rods (102) and passes through the support block (4) and is threadedly engaged with the support block (4). One end of the drive screw (51) is rotatably connected to one of the support bases (101) and the other end is threadedly connected to the other support base (101). The drive handwheel (52) is fixed on the drive screw (51).

6. The pin-pulling device according to claim 1, characterized in that, The support block (4) is provided with a limiting block (13) and a clamping block (14). The pin-pulling cylinder (6) is movably disposed between the limiting block (13) and the clamping block (14). The limiting block (13) is fixedly connected to the support block (4). The clamping block (14) is slidably connected to the support block (4). The sliding direction of the clamping block (14) is perpendicular to the axial direction of the pin-pulling cylinder (6). The support block (4) is provided with a control element (15) for controlling the sliding of the clamping block (14) so ​​that the clamping block (14) and the limiting block (13) can clamp the pin-pulling cylinder (6) together.

7. The pin-pulling device according to claim 6, characterized in that, The control component (15) includes a control screw (151) and a control handwheel (152). The control screw (151) is threadedly connected to the support block (4), and one end of the control screw (151) is rotatably connected to the clamping block (14), while the other end is fixedly connected to the control handwheel (152).

8. The pin-pulling device according to claim 6, characterized in that, The limiting block (13) and the clamping block (14) are respectively provided with arc-shaped positioning grooves (16) on their sides that are close to each other, and the outer side wall of the limiting cylinder (2) matches the inner side wall of the positioning groove (16) so that the inner side walls of the two positioning grooves (16) can clamp the pin-pulling cylinder (6) together.

9. The pin-pulling device according to claim 6, characterized in that, A positioning ring (17) is provided at one end of the pin-pulling cylinder (6) away from the limiting cylinder (2). The side of the positioning ring (17) facing the limiting cylinder (2) can abut against the limiting block (13) and the pressing block (14) for limiting.

10. The pin-pulling device according to claim 1, characterized in that, The pull rod (7) includes a pull rod (71) and a limiting nut (72). The screw of the pull screw (9) passes through the limiting nut (72). The end of the limiting nut (72) is provided with a stepped groove (73) for the nut of the pull screw (9) to be inserted. The pull rod (71) is prismatic and the end of the pull rod (71) is provided with a mounting groove (74). The limiting nut (72) is threadedly connected to the mounting groove (74) and presses the nut of the pull screw (9) against the bottom of the mounting groove (74).

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