High-efficiency pulling-in and thread detection assembly and device for shock absorber piston rod limiting ring

Abstract

The utility model discloses shock absorber piston rod limit ring high -efficient pull in and thread detection subassembly and device, wherein, device includes pneumatic riveter, pull in mechanism and thread detection pipe, and pull in mechanism and thread detection pipe are installed respectively on pneumatic riveter. When using, the end of shock absorber piston rod is inserted from the opening of pull in mechanism and inserts into thread detection pipe, then starts pneumatic riveter, drives thread detection pipe rotation, makes it with piston rod end portion engagement, if the thread quality of piston rod end portion is qualified at this moment, piston rod will spin into thread detection pipe, and whole device then moves downward relative to piston rod, extrudes limit ring, and rivets pressure in proper position, if the thread quality of piston rod end portion is unqualified, then piston rod can not spin into thread detection pipe, thereby realized the synchronous work of limit ring pull in and thread detection, and installation efficiency and detection accuracy rate are high, and still can reduce the security hidden danger brought about by manual operation, improve production safety.

Description

Technical Field

[0001] This utility model relates to the field of piston rod manufacturing technology, specifically to a component and device for efficient pull-in and thread detection of piston rod limiting rings in shock absorbers. Background Technology

[0002] Shock absorbers are an important component of a car's suspension system, primarily used to suppress spring vibrations and convert the energy of bumps during vehicle movement into heat, thereby improving driving stability and comfort. Their core principle involves the reciprocating motion of a piston rod within the shock absorber, which drives the flow of hydraulic fluid to generate damping force, thus controlling the compression and rebound speed of the spring. To prevent damage to internal components (such as the piston and oil seals) due to over-travel caused by excessive compression or extension of the piston rod, and to ensure the shock absorber operates within its designed maximum travel range, a limiting ring is typically installed at the end or middle of the piston rod.

[0003] The assembly of the piston rod retaining ring and the inspection of the quality of the piston rod end thread are crucial steps in the vibration damper production process. However, traditional assembly and inspection methods suffer from inefficiency, low precision, and complex operation: ① When pulling in the retaining ring, manual hammering is often required, which is not only labor-intensive but also prone to improper installation or deformation of the retaining ring due to excessive hammering force; ② For thread inspection, manual visual inspection or simple measuring tools are usually used, which makes it difficult to guarantee the accuracy and comprehensiveness of the inspection. Utility Model Content

[0004] To overcome the aforementioned problems in the prior art, this utility model provides a high-efficiency pull-in and thread detection assembly for a shock absorber piston rod limiting ring, including a pull-in mechanism and a thread detection tube. In use, the pull-in mechanism and the thread detection tube are assembled onto a drive mechanism. Then, the end of the shock absorber piston rod is inserted through the opening of the pull-in mechanism and into the thread detection tube. The drive mechanism is activated, driving the thread detection tube to rotate and engage with the end of the piston rod. If the thread quality at the end of the piston rod is acceptable, the piston rod will screw into the thread detection tube, and the entire device will move downwards relative to the piston rod, compressing the limiting ring and riveting it to the appropriate position. If the thread quality at the end of the piston rod is unacceptable, the piston rod cannot screw into the thread detection tube, thus achieving synchronous operation of the limiting ring pull-in and thread detection. This results in high installation efficiency and detection accuracy, reduces safety hazards associated with manual operation, and improves production safety. Correspondingly, this application also provides a high-efficiency pull-in and thread detection device for a shock absorber piston rod limiting ring.

[0005] For the components, the technical solution of this application is as follows:

[0006] A high-efficiency pull-in and thread detection assembly for a shock absorber piston rod limiting ring includes a pull-in mechanism and a thread detection tube. The pull-in mechanism includes a hollow gun head shell. One end of the gun head shell is open for insertion of the end of the shock absorber piston rod. One end of the thread detection tube is also open for insertion of the end of the shock absorber piston rod, and the inner wall of the thread detection tube has an internal thread that matches the external thread of the end of the shock absorber piston rod. In use, the other ends of the gun head shell and the thread detection tube are connected to a drive mechanism, and the thread detection tube is located inside the gun head shell.

[0007] Compared with existing technologies, the shock absorber piston rod limiting ring high-efficiency pull-in and thread detection assembly of this application includes a pull-in mechanism and a thread detection tube. The pull-in mechanism includes a gun head housing with one open end. In use, the gun head housing and thread detection tube are assembled onto a drive mechanism (e.g., a pneumatic riveting gun, electric wrench, etc.). The end of the shock absorber piston rod is then inserted through the opening of the gun head housing into the thread detection tube. The drive mechanism is then activated to rotate the thread detection tube, causing it to engage with the end of the piston rod. If the thread quality at the end of the piston rod is acceptable, the piston rod will screw into the thread detection tube, and the entire device will move downwards relative to the piston rod, compressing the limiting ring and riveting it to the appropriate position. If the thread quality at the end of the piston rod is unacceptable, the piston rod cannot screw into the thread detection tube. This achieves synchronous operation of the limiting ring pull-in and thread detection, resulting in high installation efficiency and detection accuracy. Furthermore, it reduces safety hazards associated with manual operation and improves production safety.

[0008] As an optimization, in the aforementioned shock absorber piston rod limiting ring high-efficiency pull-in and thread detection assembly, the pull-in mechanism further includes a gun head located at the end of the gun head housing; the gun head and the gun head housing are connected by threads, and a locking nut is provided at the connection between the gun head and the gun head housing. Therefore, the length of the pull-in mechanism can be adjusted by rotating the gun head, making it suitable for pulling in limiting rings with different installation heights (different piston rod specifications result in different distances between the riveting position of the limiting ring and the end of the piston rod), offering good versatility. Furthermore, one end of the gun head housing has an external thread for engaging with the internal thread on the drive mechanism, and the other end has an internal thread for engaging with the external thread on the gun head. This makes assembly convenient and easy to implement. Furthermore, the gun head housing, gun head, and thread detection tube are all cylindrical. This results in a simple structure and facilitates mass production.

[0009] For the device, the technical solution of this application is as follows:

[0010] A high-efficiency pull-in and thread detection device for a shock absorber piston rod limiting ring includes a pneumatic riveting gun, a pull-in mechanism, and a thread detection tube. The pull-in mechanism includes a hollow gun head shell. One end of the gun head shell is open for insertion of the end of the shock absorber piston rod, and the other end is connected to the housing of the pneumatic riveting gun. The thread detection tube is located inside the gun head shell, with one end open for insertion of the end of the shock absorber piston rod and the other end connected to the rotating shaft of the pneumatic riveting gun. The inner wall of the thread detection tube is provided with an internal thread, which matches the external thread of the end of the shock absorber piston rod.

[0011] Compared with the prior art, the riveting device for fixing the piston rod limiting ring of this application has a reasonable structural design, is easy to assemble, and has low manufacturing cost; it includes a pneumatic riveting gun, a pull-in mechanism, and a thread detection tube; wherein, the pull-in mechanism includes a gun head shell with one end open, and both the gun head shell and the thread detection tube are installed on the pneumatic riveting gun. In use, the end of the shock absorber piston rod is inserted through the opening of the gun head housing and into the thread detection tube. Then, the air riveting gun is activated to drive the thread detection tube to rotate, making it engage with the end of the piston rod. If the thread quality at the end of the piston rod is qualified, the piston rod will screw into the thread detection tube, and the entire device will move downward relative to the piston rod, squeezing the limiting ring and riveting it into the appropriate position. If the thread quality at the end of the piston rod is unqualified, the piston rod cannot screw into the thread detection tube. This achieves synchronous operation of the limiting ring pull-in and thread detection, resulting in high installation efficiency and detection accuracy. Moreover, the automatic pull-in and detection of the piston rod through the cooperation of the air riveting gun, gun head housing, and thread detection tube ensures high stability and avoids damage to the piston rod and limiting ring, guaranteeing product quality. It also reduces safety hazards caused by manual operation and improves production safety.

[0012] As an optimization, in the aforementioned high-efficiency pull-in and thread detection device for the piston rod limiting ring of the shock absorber, the pull-in mechanism further includes a gun head located at the end of the gun head housing; the gun head and the gun head housing are connected by threads, and a locking nut is provided at the connection between the gun head and the gun head housing. Therefore, the length of the pull-in mechanism can be adjusted by rotating the gun head, making it suitable for pulling in limiting rings with different installation heights (the distance between the riveting position of the limiting ring and the end of the piston rod will vary depending on the piston rod specification), thus offering good versatility. Furthermore, the gun head housing, gun head, and thread detection tube are all cylindrical. This results in a simple structure and ease of manufacturing. Further, the end of the gun head housing is inserted into the housing of the air riveting gun and fixed to the housing by a threaded connection. This facilitates assembly and implementation.

[0013] As an optimization, in the aforementioned high-efficiency pull-in and thread detection device for the damper piston rod limiting ring, the end of the rotating shaft is provided with a stud, and the stud is fixed to the thread detection tube by a threaded connection. This results in a simple structure that is easy to assemble. Furthermore, two heat dissipation holes are symmetrically provided on the outer circumferential surface of the gun head housing. During use, heat dissipation holes allow for cooling, preventing excessively high temperatures at the connection point between the stud and the thread detection tube after prolonged rotation of the air riveting gun's rotating shaft. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the shock absorber piston rod limiting ring high-efficiency pull-in and thread detection device in the embodiments of this application;

[0015] Figure 2 This is a schematic diagram of the assembly of the thread detection tube and the air riveting gun in an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the structure of the air rivet gun in the embodiments of this application;

[0017] Figure 4 This is a schematic diagram of the pull-in mechanism in the embodiments of this application.

[0018] The markings in the attached diagram are as follows: 1-Pneumatic riveting gun, 11-House, 12-Shaft, 13-Stud; 2-Pull-in mechanism, 21-Gun head shell, 211-Heat dissipation hole, 22-Gun head, 23-Locking nut; 3-Thread detection tube. Detailed Implementation

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the scope of the present application.

[0020] Example:

[0021] See Figure 1 and Figure 2 The high-efficiency pull-in and thread detection device for the damper piston rod limiting ring of this embodiment includes a pneumatic riveting gun 1, a pull-in mechanism 2, and a thread detection tube 3. The pull-in mechanism 2 includes a hollow gun head shell 21. One end of the gun head shell 21 is open for the insertion of the end of the damper piston rod, and the other end is connected to the housing 11 of the pneumatic riveting gun 1. The thread detection tube 3 is located inside the gun head shell 21 (the thread detection tube 3 is coaxially arranged with the gun head shell 21 and can rotate relative to the gun head shell 21), and one end of the thread detection tube 3 is open for the insertion of the end of the damper piston rod, and the other end is connected to the rotating shaft 12 of the pneumatic riveting gun 1. The inner wall of the thread detection tube 3 is provided with an internal thread, which matches the external thread of the end of the damper piston rod.

[0022] See Figure 4In this embodiment, the pull-in mechanism 2 further includes a gun head 22 located at the end of the gun head housing 21; the gun head 22 and the gun head housing 21 are connected by threads (the inner wall of the end of the gun head housing 21 has internal threads, and the end of the gun head 22 has corresponding external threads), and a locking nut 23 is provided at the connection between the gun head 22 and the gun head housing 21. Therefore, the length of the pull-in mechanism 2 can be adjusted by rotating the gun head 22, making it suitable for pulling in limit rings at different installation heights, thus offering good versatility. Furthermore, the gun head housing 21, the gun head 22, and the thread detection tube 3 are all cylindrical.

[0023] In this embodiment, the end of the gun head shell 21 is inserted into the housing 11 of the air riveting gun 1 and fixed to the housing 11 by a threaded connection (i.e., the end of the gun head shell 21 is provided with an external thread, and the inner wall of the housing 11 is provided with a corresponding internal thread). At this time, the assembly is convenient and easy to implement.

[0024] See Figure 3 In this embodiment, the end of the rotating shaft 12 is provided with a stud 13, which is inserted into the end of the threaded detection tube 3 and fixed to the threaded detection tube 3 by thread. After installation, the stud 13 is completely located inside the threaded detection tube 3, and the end of the threaded detection tube 3 abuts against the end of the rotating shaft 11.

[0025] In this embodiment, two heat dissipation holes 211 are symmetrically provided on the outer peripheral surface of the gun head housing 21. During use, heat dissipation can be achieved through the heat dissipation holes 211 to prevent the temperature at the connection position between the stud 13 and the thread detection tube 3 from becoming too high after the rotating shaft 12 of the air riveting gun 1 has been rotating for a long time.

[0026] In use, depending on the installation position of the limiting ring on the piston rod, rotate the gun head 22 to adjust the pull-in mechanism 2 to a suitable length, insert the end of the shock absorber piston rod through the opening of the gun head 22, and insert it into the thread detection tube 3; then start the air riveting gun 1 to drive the thread detection tube 3 to rotate, so that it engages with the end of the piston rod; at this time, if the thread quality of the piston rod end is qualified, the piston rod will be screwed into the thread detection tube 3, and the entire device will move downward relative to the piston rod, squeezing the limiting ring (the outer end face of the gun head 22 will contact the limiting ring), and riveting it to a suitable position (this can be achieved by controlling the number of rotations of the air riveting gun 1; after riveting to the desired position, the air riveting gun 1 will automatically rotate back, causing the thread detection tube 3 to exit the end of the piston rod). If the thread quality of the piston rod end is unqualified, the piston rod cannot be screwed into the thread detection tube 3, thus realizing the synchronous operation of the limiting ring pull-in (that is, pressing the limiting ring to a specified position) and thread detection.

[0027] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. A high-efficiency pull-in and thread detection assembly for the piston rod limiting ring of a shock absorber, characterized in that: It includes a pull-in mechanism (2) and a thread detection tube (3); the pull-in mechanism (2) includes a hollow gun head shell (21); one end of the gun head shell (21) is open for the insertion of the end of the shock absorber piston rod; one end of the thread detection tube (3) is open for the insertion of the end of the shock absorber piston rod, and the inner wall of the thread detection tube (3) is provided with an internal thread, which matches the external thread of the end of the shock absorber piston rod; in use, the other ends of the gun head shell (21) and the thread detection tube (3) are respectively connected to the drive mechanism, and the thread detection tube (3) is located inside the gun head shell (21).

2. The shock absorber piston rod limiting ring high-efficiency pull-in and thread detection assembly according to claim 1, characterized in that: The pull-in mechanism (2) also includes a gun head (22) located at the end of the gun head housing (21); the gun head (22) is connected to the gun head housing (21) by a thread, and a locking nut (23) is provided at the connection between the gun head (22) and the gun head housing (21).

3. The shock absorber piston rod limiting ring high-efficiency pull-in and thread detection assembly according to claim 2, characterized in that: One end of the gun head shell (21) is provided with an external thread for engaging with the internal thread on the drive mechanism, and the other end is provided with an internal thread for engaging with the external thread on the gun head (22).

4. The shock absorber piston rod limiting ring high-efficiency pull-in and thread detection assembly according to claim 3, characterized in that: The gun head shell (21), gun head (22) and threaded detection tube (3) are all cylindrical.

5. A device for efficient pull-in and thread detection of the piston rod limiting ring of a shock absorber, characterized in that: The device includes a pneumatic riveting gun (1), a pull-in mechanism (2), and a thread detection tube (3). The pull-in mechanism (2) includes a hollow gun head shell (21). One end of the gun head shell (21) is open for the insertion of the end of the shock absorber piston rod, and the other end is connected to the housing (11) of the pneumatic riveting gun (1). The thread detection tube (3) is located inside the gun head shell (21), and one end of the thread detection tube (3) is open for the insertion of the end of the shock absorber piston rod, and the other end is connected to the rotating shaft (12) of the pneumatic riveting gun (1). The inner wall of the thread detection tube (3) is provided with an internal thread, which matches the external thread at the end of the shock absorber piston rod.

6. The high-efficiency pull-in and thread detection device for the piston rod limiting ring of the shock absorber according to claim 5, characterized in that: The pull-in mechanism (2) also includes a gun head (22) located at the end of the gun head housing (21); the gun head (22) is connected to the gun head housing (21) by a thread, and a locking nut (23) is provided at the connection between the gun head (22) and the gun head housing (21).

7. The high-efficiency pull-in and thread detection device for the piston rod limiting ring of the shock absorber according to claim 6, characterized in that: The gun head shell (21), gun head (22) and threaded detection tube (3) are all cylindrical.

8. The high-efficiency pull-in and thread detection device for the piston rod limiting ring of the shock absorber according to claim 7, characterized in that: The end of the gun head shell (21) is inserted into the housing (11) of the air rivet gun (1) and fixed to the housing (11) by a threaded connection.

9. The high-efficiency pull-in and thread detection device for the piston rod limiting ring of the shock absorber according to claim 7, characterized in that: The end of the rotating shaft (12) is provided with a stud (13), and the stud (13) is fixed to the threaded detection tube (3) by a threaded connection.

10. The high-efficiency pull-in and thread detection device for the piston rod limiting ring of the shock absorber according to claim 9, characterized in that: Two heat dissipation holes (211) are symmetrically provided on the outer peripheral surface of the gun head shell (21).

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