Tapping device for machining inner cylinder of shock absorber

Abstract

The invention relates to the technical field of shock absorber inner cylinder machining, in particular to a tapping device for shock absorber inner cylinder machining, which comprises a base, a rotary worktable, a positioning and clamping mechanism and a tapping mechanism, the rotary worktable is rotatably mounted on the base through a bearing, a driving device is mounted on the base, and the driving device comprises a driving motor and a driving gear; a transmission gear sleeves the outer side of the rotary worktable, the driving gear is in meshed connection with the transmission gear, through accurate mechanical movement and automatic control, the device achieves efficient tapping machining of the inner cylinder of the shock absorber, the production efficiency is remarkably improved, the rotary worktable rotates stably through cooperation of the driving motor and the driving gear, and the production efficiency is improved. Stability and continuity of the machining process are guaranteed, the tapping mechanism stably moves through the sliding rail and the driving assembly, meanwhile, the height of the tapping head can be adjusted through the lifting device, and the machining requirements of shock absorber inner cylinders of different specifications are met.

Description

Technical Field

[0001] The invention relates to the technical field of processing an inner cylinder of a shock absorber, in particular to a tapping device used for processing an inner cylinder of a shock absorber. Background Art

[0002] In modern machinery manufacturing and automobile industry, shock absorber is one of the key components, and its quality and performance directly affect the stability and safety of the whole system. The machining accuracy of shock absorber inner tube is particularly important, because it is directly related to the working efficiency and life of shock absorber. The traditional tapping method of shock absorber inner tube has many shortcomings, such as low machining accuracy, low production efficiency, large manual operation error and other problems.

[0003] Insufficient processing accuracy:

[0004] Traditional manual or semi-automatic equipment cannot ensure the consistency and accuracy of each tapping process of the shock absorber inner tube. Especially in the case of continuous production of multiple batches, dimensional deviation is prone to occur, resulting in inconsistent dimensions of the shock absorber inner tube, which in turn affects its fit and working performance. At the same time, uneven surface roughness will also affect the service life and efficiency of the shock absorber.

[0005] Low production efficiency:

[0006] Traditional manual or semi-automatic tapping processes require a long time to clamp the workpiece, adjust the processing position, and replace the tool. These cumbersome operation steps greatly reduce the overall production efficiency. Under the demand for large-scale production, this inefficient processing method is difficult to meet the market's requirements for rapid response and delivery.

[0007] Large manual operation errors:

[0008] The processing quality of traditional equipment that relies on manual operation depends largely on the operator's skill level and experience. However, manual operation is easily affected by factors such as fatigue and lack of concentration. Especially after long-term continuous work, the probability of operating errors will increase significantly, thus affecting the processing quality and consistency of the shock absorber inner tube.

[0009] Lack of real-time monitoring and feedback mechanism:

[0010] Some existing shock absorber inner tube processing equipment lacks an effective monitoring system and cannot monitor key parameters and abnormal conditions in the processing process in real time. This means that deviations or problems that occur during the processing process are often not discovered and corrected in time, resulting in unstable quality of the final product and even batch quality problems. Summary of the invention

[0011] 1. Technical issues to be resolved

[0012] In view of the deficiencies in the prior art, the present invention provides a tapping device for machining an inner cylinder of a shock absorber.

[0013] (II) Technical solution

[0014] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A tapping device for processing the inner cylinder of a shock absorber of the present invention comprises a base, a rotary table, a positioning clamping mechanism and a tapping mechanism, the rotary table is rotatably mounted on the base through a bearing, a driving device is mounted on the base, the driving device comprises a driving motor and a driving gear, a transmission gear is sleeved on the outer side of the rotary table, the driving gear is meshed and connected with the transmission gear, a plurality of slide rails are mounted around the rotary table, a driving assembly is mounted on the slide rail, the clamping mechanism is slidably mounted on the slide rail through the driving assembly, and the clamping mechanism comprises a base. The base is provided with a positioning groove, the limiting clamp includes a limiting frame and a clamping plate, the limiting frame is installed at the top of the base, the inner side of the limiting frame is slidably installed with the clamping plate through the driving component 2, and the clamping plate is symmetrically installed at both ends of the driving component 2, the tapping mechanism includes a frame, a tapping motor and a tapping head, a slide rail 2 is installed on the side of the base, a driving component 3 is installed on the slide rail 2, the bottom of the frame is slidably installed on the slide rail 2 through the driving component 3, a lifting slot is provided on the frame, a lifting device is installed in the lifting slot, the lifting motor is installed on the lifting device, and the tapping head is installed at the output end of the tapping motor.

[0015] Preferably, the lifting device includes a lifting motor, a lifting screw and an equipment frame, the lifting motor is installed in a lifting slot, the lifting screw is installed at the output end of the lifting motor, and the lifting screw is rotatably installed in the lifting slot, the equipment frame is mounted on the lifting screw, and the tapping motor is installed on the equipment frame.

[0016] Further preferably, an infrared transmitter is installed on the side of the rotary workbench, and the infrared transmitter is horizontal with the slide rail, an infrared receiver is installed on the frame, the infrared receiver is perpendicular to the tapping motor, and the infrared receiver is adapted to the infrared transmitter.

[0017] Preferably again, a hinged frame is provided at the top of the frame, and an image collector is hinged on the hinged frame via a pin shaft, and both ends of the pin shaft are threadedly fitted with limit nuts.

[0018] Preferably, the drive component 1 and the drive component 3 have the same structure, both including an adjusting motor 1 and a threaded screw, the slide rail 1 and the slide rail 2 are provided with a track groove, the adjusting motor 1 is fixedly installed in the track groove, the threaded screw is installed at the output end of the adjusting motor 1, and the threaded screw is rotatably installed in the track groove.

[0019] Further preferably, the drive component 2 includes an adjusting motor 2 and a bidirectional adjusting screw, an adjusting slot is provided on the inner side of the limit frame, the adjusting motor 2 is fixedly installed in the adjusting slot, the bidirectional adjusting screw is installed at the output end of the adjusting motor 2, and the bidirectional adjusting screw is rotatably installed in the adjusting slot.

[0020] Again preferably, it also includes a locking mechanism, which is installed on the side of the base, and the locking mechanism includes a bracket, a support block and an electromagnetic controller. The bracket is fixedly installed on the base, the support block is fixedly installed on the top of the bracket, and the support block is located below the rotating workbench. An electromagnet is provided on the support block, and the electromagnetic controller is installed on the support block, and the electromagnet is electrically connected to the electromagnetic controller.

[0021] Preferably, an arc groove is provided on the support block, and the bottom of the rotary workbench is adapted to the arc groove via an annular rod.

[0022] Further preferably, a limiting plate is provided at the rear of the base.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the present invention provides a tapping device for processing the inner cylinder of a shock absorber, which has the following beneficial effects:

[0025] Efficient automated processing:

[0026] Through precise mechanical movement and automated control, the device achieves efficient tapping of the shock absorber inner tube, significantly improving production efficiency.

[0027] The cooperation of the driving motor and the driving gear enables the rotary table to rotate smoothly, ensuring the stability and continuity of the machining process.

[0028] Precise positioning and clamping:

[0029] The positioning and clamping mechanism adopts the design of slide rails and drive components, which can realize the precise positioning and clamping of the shock absorber inner tube and avoid deviation during the processing.

[0030] The symmetrical design of the limit clamp and the clamping plate further enhances the stability and reliability of the clamping.

[0031] Flexible and adjustable tapping mechanism:

[0032] The tapping mechanism achieves smooth movement through the slide rail and drive assembly, and the lifting device can adjust the height of the tapping head to meet the processing requirements of shock absorber inner tubes of different specifications.

[0033] This design improves processing flexibility and adaptability and reduces the cost of equipment replacement and debugging.

[0034] High-precision alignment system:

[0035] The introduction of the infrared alignment system ensures the precise positioning between the tapping mechanism and the clamping mechanism, avoids processing deviations caused by manual operation errors, and improves processing accuracy and consistency.

[0036] Real-time monitoring and quality control:

[0037] The setting of the image collector enables the operator to monitor the situation during the processing in real time, discover and correct problems in time, and ensure the processing quality.

[0038] Stable and reliable drive system:

[0039] The driving assembly adopts the design of adjusting motor and threaded screw, which realizes the smooth movement of clamping mechanism and tapping mechanism, and ensures the stability and accuracy of processing.

[0040] The setting of the locking mechanism ensures that the rotary table can remain stable when needed, further enhancing the stability and safety of the equipment.

[0041] Enhanced Structural Stability:

[0042] The coordination of the arc groove and the annular rod, as well as the setting of the limit plate, jointly enhance the stability of the rotary table and the clamping mechanism, and avoid shaking and dislocation during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall top view structure of the present invention;

[0044] Figure 2 It is a schematic diagram of the overall bottom-up structure of the present invention;

[0045] Figure 3 This is a schematic diagram of the structure of a mounting base for a track according to the present invention;

[0046] Figure 4 It is a schematic diagram of the limit clamp structure of the present invention;

[0047] Figure 5 It is a structural schematic diagram of the tapping mechanism of the present invention;

[0048] Figure 6 This is a schematic diagram of the positioning and clamping mechanism structure of the present invention;

[0049] In the figure: 1. base; 2. rotating workbench; 3. transmission gear; 4. driving motor; 5. driving gear; 6. slide rail 1; 7. slide rail 2; 8. base; 9. positioning slot; 10. limit frame; 11. frame; 12. adjusting motor 1; 13. screw rod; 14. limit plate; 15. infrared transmitter; 16. infrared receiver; 17. adjusting slot; 18. adjusting motor 2; 19. two-way adjusting screw rod; 20. clamping plate; 21. lifting slot; 22. lifting screw rod; 23. lifting motor; 24. equipment frame; 25. tapping motor; 26. tapping head; 27. articulated frame; 28. image collector; 29. ​​pin shaft; 30. limit nut; 31. bracket; 32. support block; 33. electromagnetic controller; 34. annular rod; 35. arc slot; 36. electromagnet. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-6 A tapping device for processing the inner tube of a shock absorber of the present invention comprises a base 1, a rotating worktable 2, a positioning clamping mechanism and a tapping mechanism. The rotating worktable 2 is rotatably mounted on the base 1 through a bearing. A driving device is installed on the base 1. The driving device comprises a driving motor 4 and a driving gear 5. A transmission gear 3 is sleeved on the outer side of the rotating worktable 2. The driving gear 5 is meshed and connected with the transmission gear 3. A plurality of slide rails 6 are installed around the rotating worktable 2. A driving component 1 is installed on the slide rail 6. The clamping mechanism is slidably mounted on the slide rail 6 through the driving component 1. The clamping mechanism comprises a base 8 and a limit clamp. A positioning groove 9 is provided on the base 8. The limit clamp includes a limit frame 10 and a clamping plate 20. The limit frame 10 is installed on the top of the base 8. The inner side of the limit frame 10 is slidably installed with the clamping plate 20 through the driving component 2, and the clamping plate 20 is symmetrically installed at both ends of the driving component 2. The tapping mechanism includes a frame 11, a tapping motor 25 and a tapping head 26. A slide rail 27 is installed on the side of the base 1, and a driving component 3 is installed on the slide rail 27. The bottom of the frame 11 is slidably installed on the slide rail 27 through the driving component 3. A lifting groove 21 is provided on the frame 11, and a lifting device is installed in the lifting groove 21. The lifting motor 23 is installed on the lifting device, and the tapping head 26 is installed at the output end of the tapping motor 25.

[0052] The tapping device for processing the inner cylinder of the shock absorber mainly comprises a base 1, a rotary table 2, a positioning clamping mechanism and a tapping mechanism. The device realizes efficient tapping processing of the inner cylinder of the shock absorber through precise mechanical movement and automatic control.

[0053] Base 1 and rotary table 2:

[0054] Structural design: The rotating table 2 is rotatably mounted on the base 1 through a bearing, and a driving device (including a driving motor 4 and a driving gear 5) is installed on the base 1. A transmission gear 3 is sleeved on the outer side of the rotating table 2, and the driving gear 5 is meshed and connected with the transmission gear 3.

[0055] Working principle: After the driving motor 4 is started, the driving gear 5 drives the transmission gear 3 to rotate, so that the rotary table 2 rotates smoothly, ensuring that the workpiece remains stable during the processing.

[0056] Positioning clamping mechanism:

[0057] Slide rails and drive assembly: A plurality of slide rails 6 are mounted around the rotary table 2, and a drive assembly 1 is mounted on the slide rail 6. The clamping mechanism is slidably mounted on the slide rail 6 through the drive assembly 1.

[0058] Clamping structure: The clamping mechanism includes a base 8 and a limit clamp. A positioning groove 9 is provided on the base 8, and the limit clamp includes a limit frame 10 and a clamping plate 20. The limit frame 10 is installed on the top of the base 8, and the clamping plate 20 is slidably installed on the inner side of the limit frame 10 through the driving component 2, and the clamping plate 20 is symmetrically installed at both ends of the driving component 2.

[0059] Working principle: driving component 1 drives the clamping mechanism to move smoothly along the slide rail 1 6, and driving component 2 controls the clamping plate 20 to slide inside the limit frame 10 to achieve accurate positioning and clamping of the shock absorber inner tube.

[0060] Tapping mechanism:

[0061] Structural design: The tapping mechanism includes a frame 11, a tapping motor 25 and a tapping head 26. A slide rail 27 is installed on the side of the base 1, and a drive component 3 is installed on the slide rail 27. The bottom of the frame 11 is slidably installed on the slide rail 27 through the drive component 3, and a lifting groove 21 is provided on the frame 11. A lifting device is installed in the lifting groove 21, and a lifting motor 23 is installed on the lifting device. The tapping head 26 is installed at the output end of the tapping motor 25.

[0062] The lifting device includes a lifting motor 23, a lifting screw rod 22 and an equipment frame 24. The lifting motor 23 is installed in the lifting slot 21, the lifting screw rod 22 is installed at the output end of the lifting motor 23 and is rotatably installed in the lifting slot 21, the equipment frame 24 is sleeved on the lifting screw rod 22, and the tapping motor 25 is installed on the equipment frame 24.

[0063] Working principle: the driving component 3 drives the frame 11 to move smoothly along the slide rail 2 7. After the lifting motor 23 is started, the equipment frame 24 is moved up and down through the lifting screw rod 22 to adjust the height of the tapping head 26. Finally, the tapping motor 25 drives the tapping head 26 to perform the tapping operation.

[0064] 2. Working Principles of Each Optimal Technical Solution

[0065] Infrared Alignment System:

[0066] Structural design: An infrared transmitter 15 is installed on the side of the rotating workbench 2 and horizontally aligned with the slide rail 6; an infrared receiver 16 is installed on the frame 11, perpendicular to the tapping motor 25 and corresponding to the infrared transmitter 15.

[0067] Working principle: Through the signal transmission between the infrared transmitter 15 and the receiver, the precise positioning between the tapping mechanism and the clamping mechanism is ensured to avoid processing deviations caused by manual operation errors.

[0068] Image collector 28:

[0069] Structural design: A hinged frame 27 is provided at the top of the frame 11, and an image collector 28 is hingedly connected to the hinged frame 27 through a pin shaft 29, and limit nuts 30 are threadedly sleeved on both ends of the pin shaft 29.

[0070] Working principle: The image collector 28 can capture the situation during the processing in real time, helping the operator to monitor the processing quality and find and correct problems in time. The limit nut 30 is used to fix the angle of the image collector 28 to ensure its shooting effect.

[0071] Drive component 1 and drive component 3:

[0072] Structural design: both include an adjusting motor 12 and a threaded screw 13. A track groove is provided on the slide rail 1 6 and the slide rail 2 7. The adjusting motor 12 is fixedly installed in the track groove. The threaded screw 13 is installed at the output end of the adjusting motor 12 and rotatably installed in the track groove.

[0073] Working principle: After the adjusting motor 12 is started, the threaded screw 13 drives the clamping mechanism or the frame 11 to move along the slide rail to realize the tapping process of the inner tube of the shock absorber.

[0074] Drive component 2:

[0075] Structural design: including an adjusting motor 18 and a bidirectional adjusting screw 19, an adjusting slot 17 is provided on the inner side of the limit frame 10, the adjusting motor 18 is fixedly installed in the adjusting slot 17, and the bidirectional adjusting screw 19 is installed at the output end of the adjusting motor 18 and rotatably installed in the adjusting slot 17.

[0076] Working principle: After the adjusting motor 18 is started, the clamping plate 20 is slid inside the limit frame 10 through the bidirectional adjusting screw rod 19 to realize the clamping and releasing operation of the workpiece.

[0077] Locking mechanism:

[0078] Structural design: Installed on the side of the base 1, including a bracket 31, a support block 32 and an electromagnetic controller 33. The bracket 31 is fixedly installed on the base 1, the support block 32 is fixedly installed on the top of the bracket 31, located below the rotating worktable 2, the support block 32 is provided with an electromagnet 36, and the electromagnetic controller 33 is installed on the support block 32 and electrically connected to the electromagnet 36.

[0079] Working principle: When the rotary table 2 needs to stop, the electromagnetic controller 33 is energized to make the electromagnet 36 adsorb the bottom of the rotary table 2 to ensure that it is stable and motionless; when it needs to rotate, the power is turned off to release the lock.

[0080] Auxiliary structures:

[0081] Arc groove 35 and annular rod 34: An arc groove 35 is provided on the support block 32, and the bottom of the rotary table 2 is adapted to the arc groove 35 through the annular rod 34 to ensure the stability of the rotation of the rotary table 2 on the support block 32.

[0082] Limiting plate 14: A limiting plate 14 is provided at the rear of the base 8 to limit the rear end of the shock absorber inner tube to prevent the shock absorber inner tube from being dislocated during the tapping process.

[0083] In the technical solution, a programmable controller can be configured to access various motor components, image collector 28, infrared transmitter 15, infrared receiver 16 and electromagnetic controller 33, and access their data for control and use.

[0084] Detailed workflow

[0085] Preparation:

[0086] The inner cylinder of the shock absorber to be processed is placed on the positioning grass of the base 8, and the clamping mechanism is driven by the driving component 1 to move along the slide rail 6, thereby driving the inner cylinder of the shock absorber to move smoothly for tapping.

[0087] Start the second driving assembly to slide the clamping plate 20 to a clamping state to ensure that the workpiece is firmly clamped.

[0088] Positioning and calibration:

[0089] The precise positioning between the tapping mechanism and the clamping mechanism is ensured by the cooperation of the infrared transmitter 15 and the receiver.

[0090] The image collector 28 monitors the processing position in real time to ensure accuracy.

[0091] Tapping operation:

[0092] The driving assembly 3 drives the frame 11 to move along the slide rail 2 7 to the processing position. After the lifting motor 23 is started, the height of the tapping head 26 is adjusted through the lifting screw rod 22.

[0093] The tapping motor 25 is started to drive the tapping head 26 to perform the tapping operation to complete the predetermined processing task.

[0094] End and reset:

[0095] After the processing is completed, the second driving assembly releases the clamping plate 20 to release the workpiece.

[0096] The drive assembly drives the clamping mechanism back to the initial position to prepare for the next round of processing.

[0097] The locking mechanism locks or unlocks the rotary table 2 as required to ensure safe operation.

[0098] In summary, the shock absorber inner tube processing tapping device provided by the present invention not only realizes efficient automated processing, but also ensures processing accuracy and stability through a variety of preferred technical solutions, and has significant technical advantages and practical value.

[0099] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tapping device for processing the inner cylinder of a shock absorber, characterized in that: The invention comprises a base (1), a rotating worktable (2), a positioning clamping mechanism and a tapping mechanism. The rotating worktable (2) is rotatably mounted on the base (1) via a bearing. A driving device is mounted on the base (1). The driving device comprises a driving motor (4) and a driving gear (5). A transmission gear (3) is sleeved on the outer side of the rotating worktable (2). The driving gear (5) is meshedly connected with the transmission gear (3). A plurality of slide rails (6) are mounted around the rotating worktable (2). A driving component (6) is mounted on the slide rail (6). The clamping mechanism is slidably mounted on the slide rail (6) via the driving component (6). The clamping mechanism comprises a base (8) and a limiting clamp. A positioning groove (9) is provided on the base (8). The limiting clamp comprises a limiting frame (10) and a positioning groove (11). and a clamping plate (20), the limiting frame (10) is installed at the top of the base (8), the inner side of the limiting frame (10) is slidably installed with the clamping plate (20) through the driving component 2, and the clamping plate (20) is symmetrically installed at both ends of the driving component 2, the tapping mechanism comprises a frame (11), a tapping motor (25) and a tapping head (26), the side of the base (1) is installed with a slide rail 2 (7), the driving component 3 is installed on the slide rail 2 (7), the bottom of the frame (11) is slidably installed on the slide rail 2 (7) through the driving component 3, the frame (11) is provided with a lifting groove (21), the lifting device is installed in the lifting groove (21), the lifting motor (23) is installed on the lifting device, and the tapping head (26) is installed at the output end of the tapping motor (25).

2. A tapping device for processing the inner cylinder of a shock absorber according to claim 1, characterized in that: The lifting device comprises a lifting motor (23), a lifting screw rod (22) and an equipment frame (24); the lifting motor (23) is installed in a lifting slot (21); the lifting screw rod (22) is installed at the output end of the lifting motor (23); and the lifting screw rod (22) is rotatably installed in the lifting slot (21); the equipment frame (24) is sleeved on the lifting screw rod (22); and the tapping motor (25) is installed on the equipment frame (24).

3. A tapping device for processing the inner cylinder of a shock absorber according to claim 2, characterized in that: An infrared transmitter (15) is installed on the side of the rotary workbench (2), and the infrared transmitter (15) is horizontal with the slide rail (6). An infrared receiver (16) is installed on the frame (11), and the infrared receiver (16) is perpendicular to the tapping motor (25), and the infrared receiver (16) is adapted to the infrared transmitter (15).

4. A tapping device for processing the inner cylinder of a shock absorber according to claim 3, characterized in that: An articulated frame (27) is provided at the top end of the frame (11), an image collector (28) is hingedly connected to the articulated frame (27) via a pin shaft (29), and both ends of the pin shaft (29) are threadedly sleeved with limit nuts (30).

5. A tapping device for processing the inner cylinder of a shock absorber according to claim 4, characterized in that: The drive assembly 1 and the drive assembly 3 have the same structure and both include an adjusting motor 1 (12) and a threaded screw (13). The slide rail 1 (6) and the slide rail 2 (7) are provided with a track groove. The adjusting motor 1 (12) is fixedly installed in the track groove. The threaded screw (13) is installed at the output end of the adjusting motor 1 (12). The threaded screw (13) is rotatably installed in the track groove.

6. A tapping device for processing the inner cylinder of a shock absorber according to claim 5, characterized in that: The second driving component comprises a second adjusting motor (18) and a bidirectional adjusting screw (19); an adjusting slot (17) is provided on the inner side of the limiting frame (10); the second adjusting motor (18) is fixedly mounted in the adjusting slot (17); the bidirectional adjusting screw (19) is mounted at the output end of the second adjusting motor (18); and the bidirectional adjusting screw (19) is rotatably mounted in the adjusting slot (17).

7. A tapping device for processing the inner cylinder of a shock absorber according to claim 6, characterized in that: The invention also comprises a locking mechanism, which is mounted on the side of the base (1), and comprises a bracket (31), a support block (32) and an electromagnetic controller (33). The bracket (31) is fixedly mounted on the base (1), the support block (32) is fixedly mounted on the top of the bracket (31), and the support block (32) is located below the rotating worktable (2). An electromagnet (36) is provided on the support block (32), and the electromagnetic controller (33) is mounted on the support block (32). The electromagnet (36) is electrically connected to the electromagnetic controller (33).

8. A tapping device for processing the inner cylinder of a shock absorber according to claim 7, characterized in that: The support block (32) is provided with an arc groove (35), and the bottom of the rotary worktable (2) is adapted to the arc groove (35) via an annular rod (34).

9. A tapping device for processing the inner cylinder of a shock absorber according to claim 8, characterized in that: A limiting plate (14) is provided at the rear of the base (8).

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