A shock absorber screw cap screwing apparatus

By designing a slide and screw-operated structure that is compatible with the positional errors of the housing and screw cap, the screw cap can be screwed smoothly even when there are positional errors, thus solving the problem of insufficient adaptability of existing equipment.

CN224390420UActive Publication Date: 2026-06-23WUHAN CRRC SIFANGWU RAIL TRANSIT TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN CRRC SIFANGWU RAIL TRANSIT TECHNOLOGY CO LTD
Filing Date
2025-07-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing screw cap tightening equipment is difficult to adapt to positional errors between the housing and the screw cap, making it difficult for the tightening unit to align with the screw cap and thus difficult to tighten smoothly.

Method used

A damper cap screw-screwing device was designed, comprising a base frame, a caliper disc, and a screw-screwing assembly. Through the clearance fit between the slide and the screw-screwing assembly, the device can accommodate positional errors of the housing and the cap, allowing the screw-screwing assembly to smoothly engage with the caliper disc, and using a rotary drive to rotate the cap.

Benefits of technology

Even with significant positional errors, the screw cap can be screwed on smoothly, solving the screwing problem of existing equipment under positional errors.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a device for tightening a shock absorber cap, comprising a base frame, a caliper disc, and a tightening assembly. The base frame has a machining position for placing the housing. The caliper disc has a jaw for engaging the cap at its center. The tightening assembly includes a slide, a tightening component, and a rotary drive. The tightening component is rotatably mounted on the slide. The rotary drive is connected to the tightening component to drive its rotation. The slide is slidably mounted on the base frame, and its sliding trajectory has a first position where the tightening component engages with the caliper disc, and a second position where it disengages from the caliper disc. When the slide is in the first position, the tightening component and the caliper disc are in clearance fit. Due to the clearance fit between the tightening component and the caliper disc, positional errors of the housing and the cap can be accommodated, allowing the tightening component and the caliper disc to engage smoothly. The rotary drive drives the tightening component to rotate, which in turn drives the caliper disc and the cap to rotate, thus smoothly tightening the cap.
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Description

Technical Field

[0001] This utility model relates to the field of vibration damper assembly technology, specifically to a vibration damper screw cap screw tightening device. Background Technology

[0002] Vibration dampers are a common type of cushioning component. They consist of a housing and a screw cap, which are connected by threads. Since vibration dampers require regular maintenance, the housing and screw cap need to be loosened and disassembled periodically.

[0003] Existing cap tightening devices can be found in patent application number CN202120575641.5, which includes a tightening unit and a moving unit. The tightening unit is used to tighten the cap, while the moving unit drives the tightening unit to move up or down synchronously with the cap. However, during use, the housing and cap of the damper will experience some wear, which often results in a large positional error between the housing and the cap placed on the cap tightening device. This makes it difficult for the tightening unit to align with the cap, thus hindering the smooth tightening of the cap.

[0004] Therefore, how to make the screw cap tightening equipment compatible with the positional errors of the housing and screw cap is a technical problem that urgently needs to be solved. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a damper screw cap screwing device to solve the technical problem of positional error of the shell and screw cap that is difficult to adapt to in the existing screw cap screwing device.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a device for tightening a shock absorber screw cap, which includes:

[0008] The base frame has a machining area for placing the housing;

[0009] The caliper disc has a jaw with a locking screw cap in the center; and

[0010] A screwing assembly includes a slide, a screwing component, and a rotary drive component. The screwing component is rotatably mounted on the slide, and the rotary drive component is connected to the screwing component to drive the screwing component to rotate. The slide is slidably disposed on the base frame, and its sliding trajectory has a first position where the screwing component engages with the caliper disc, and a second position where it disengages from the caliper disc.

[0011] When the slide is in the first position, the screwing component is in clearance fit with the caliper disc.

[0012] In some embodiments, the caliper disc has a plurality of locking holes on its outer periphery, and the screwing member has a plurality of pins corresponding to the plurality of locking holes. When the slide is in the first position, the pins are inserted through the plurality of locking holes in a corresponding manner, and the pins are in clearance fit with the locking holes.

[0013] In some embodiments, a plurality of the snap-fit ​​holes are arranged circumferentially along the caliper disc.

[0014] In some embodiments, the screwing member has a slot, which is fitted around the outer periphery of the caliper disc so that the screwing member drives the caliper disc to rotate, and the slot is in clearance fit with the outer periphery of the caliper disc.

[0015] In some embodiments, the slide has an installation port, the screwing component has a rotating shaft, the screwing assembly further includes a bearing, the outer periphery of the bearing is embedded in the installation port, and the inner ring of the bearing is sleeved on the outer periphery of the rotating shaft.

[0016] In some embodiments, the rotary drive further includes a rotary hydraulic cylinder mounted on the slide and throttle connected to the rotating shaft.

[0017] In some embodiments, the processing station is provided with a positioning groove.

[0018] In some embodiments, the base frame is provided with slide rails, and the slide block is slidably disposed on the slide rails.

[0019] In some embodiments, the screwing assembly further includes a sliding drive member that is kinetically connected to the slide block to switch the slide block between the first position and the second position.

[0020] In some embodiments, one end of the jaws extends radially through the caliper disc, and the end of the jaws extending through the caliper disc forms a guide wedge surface.

[0021] Compared with the prior art, the shock absorber screw cap tightening device provided by this utility model has the following advantages:

[0022] First, the housing is placed and fixed in the machining position, and the screw cap is placed on the housing. Then, the caliper disc is placed on the screw cap, and the jaws are used to engage the screw cap. The slide can then be adjusted from the second position to the first position. Due to the clearance fit between the screwing component and the caliper disc, positional errors of the housing and screw cap can be accommodated, allowing the screwing component and caliper disc to smoothly engage. At this point, a rotary drive can be used to drive the screwing component to rotate, thereby rotating the caliper disc and screw cap, thus smoothly screwing the screw cap. The damper screw cap screwing device of this application can accommodate positional errors of the housing and screw cap, and can smoothly screw the screw cap even with large positional errors. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the shock absorber screw cap tightening device provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the caliper disc structure provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a caliper disc structure provided in another embodiment of the present invention;

[0026] Explanation of reference numerals in the attached drawings: base frame 100, positioning groove 110, slide rail 120, caliper disc 200, jaws 210, snap-fit ​​hole 220, screwing assembly 300, slide block 310, mounting port 311, screwing component 320, pin 321, slot 322, rotating shaft 323, rotary drive component 330, rotary hydraulic cylinder 331, sliding drive component 340, bearing 350. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] To address the technical problem of the inability of screw cap screwing equipment to adapt to positional errors of the housing and screw cap, this utility model provides a damper screw cap screwing equipment that can accommodate positional errors of the housing and screw cap, thus enabling the screw cap to be screwed smoothly even with large positional errors.

[0029] It should be noted that the shock absorber screw cap tightening device of this utility model is used for, but not limited to, shock absorber maintenance. For ease of explanation, this utility model only uses the application of the shock absorber screw cap tightening device to shock absorber maintenance as an example. The principle of the shock absorber screw cap tightening device in other types of equipment is essentially the same as that in shock absorber maintenance, and will not be elaborated here.

[0030] Please see Figure 1 , Figure 1This is a schematic diagram of the structure of a damper screw cap tightening device according to an embodiment of the present invention. The damper screw cap tightening device includes a base frame 100, a caliper disc 200, and a tightening assembly 300. The base frame 100 has a processing position for placing the housing. The caliper disc 200 has a jaw 210 for engaging the screw cap at its center. The tightening assembly 300 includes a slide 310, a tightening component 320, and a rotary drive component 330. The tightening component 320 is rotatably mounted on the slide 310. The rotary drive component 330 is connected to the tightening component 320 to drive the tightening component 320 to rotate. The slide 310 is slidably disposed on the base frame 100. Its sliding trajectory has a first position where the tightening component 320 engages with the caliper disc 200, and a second position where it disengages from the caliper disc 200. When the slide 310 is in the first position, the tightening component 320 and the caliper disc 200 are in clearance fit.

[0031] In this embodiment, the housing is first fixed in the machining position, and the screw cap is placed on the housing. Then, the caliper disc 200 is placed on the screw cap, and the jaws 210 engage the screw cap. The slide block 310 can then be adjusted from the second position to the first position. Due to the clearance fit between the screwing component 320 and the caliper disc 200, the positional errors of the housing and screw cap can be accommodated, allowing the screwing component 320 and the caliper disc 200 to smoothly engage. At this point, the rotary drive component 330 can be used to drive the screwing component 320 to rotate, thereby causing the caliper disc 200 and the screw cap to rotate, thus smoothly screwing the screw cap. The damper screw cap screwing device of this application can accommodate positional errors of the housing and screw cap, and can smoothly screw the screw cap even with large positional errors.

[0032] See also Figure 1 and Figure 2 In some embodiments, the caliper disc 200 has a plurality of engaging holes 220 on its outer periphery. The screwing component 320 has a plurality of pins 321 corresponding to the engaging holes 220. When the slide 310 is in the first position, the pins 321 are inserted through the engaging holes 220, and the pins 321 and the engaging holes 220 are in clearance fit. When the slide 310 is adjusted to the first position, the pins 321 are inserted through the engaging holes 220. Due to the clearance fit between the engaging holes 220 and the pins 321, even if there is a positional error between the housing and the screw cap, the pins 321 can still pass smoothly through the engaging holes 220. At this time, the screwing component 320 can rotate to drive the caliper disc 200 to rotate using the pins 321.

[0033] Based on the above embodiments, in some embodiments, a plurality of locking holes 220 are arranged along the circumference of the caliper disc 200, thereby making the caliper disc 200 subjected to uniform force.

[0034] See also Figure 3In some other embodiments, the screwing member 320 has a slot 322, which is fitted around the outer periphery of the caliper disc 200 so that the screwing member 320 drives the caliper disc 200 to rotate. The slot 322 and the outer periphery of the caliper disc 200 are in clearance fit. Due to the clearance fit between the slot 322 and the outer periphery of the caliper disc 200, the slot 322 and the caliper disc 200 can smoothly engage with each other even if there is a positional error between the housing and the screw cap.

[0035] In some embodiments, the slide 310 has an installation port 311, the screwing component 320 has a rotating shaft 323, and the screwing assembly 300 also includes a bearing 350. The outer periphery of the bearing is embedded in the installation port 311, and the inner ring of the bearing 350 is sleeved on the outer periphery of the rotating shaft 323. Under the action of the bearing 350, the resistance of the screwing component 320 to rotate relative to the slide 310 is reduced.

[0036] In some embodiments, the rotary drive 330 further includes a rotary hydraulic cylinder 331, which is mounted on the slide 310 and is drively connected to the rotating shaft 323. The rotary hydraulic cylinder 331 has a sufficiently large torque, enabling it to smoothly drive the screwing component 320 and the screw cap to rotate.

[0037] In some embodiments, the processing position is provided with a positioning groove 110. The positioning groove 110 can limit the housing and maintain the stability of the housing during the tightening of the screw cap.

[0038] In some embodiments, the base frame 100 is provided with a slide rail 120, and the slide block 310 is slidably disposed on the slide rail 120. The slide rail 120 serves as a guide, enabling the slide block 310 to have a stable sliding trajectory, ensuring that the screw-on component 320 can accurately engage with the screw cap.

[0039] Based on the above embodiments, in some embodiments, the screwing assembly 300 further includes a sliding drive 340, which is connected to the slide block 310. The sliding drive 340 drives the slide block 310 to move along the slide rail 120, thereby switching the slide block 310 between a first position and a second position.

[0040] In some embodiments, one end of the jaws 210 radially penetrates the caliper disc 200, and the end of the jaws 210 penetrating the caliper disc 200 forms a guide wedge surface. In actual use, the operator can move the caliper disc 200 radially so that the guide wedge surface is close to the screw cap. Under the guidance of the guide wedge surface, the screw cap is easily engaged with the jaws 210, reducing the difficulty of the caliper disc 200 engaging the screw cap.

[0041] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail below:

[0042] First, the housing is fixed in the machining position, and the screw cap is placed on the housing. Then, the caliper disc 200 is placed on the screw cap, and the jaws 210 engage the screw cap. Next, the slide block 310 is adjusted from the second position to the first position, with the pins 321 correspondingly inserted into the locking holes 220. Due to the clearance fit between the locking holes 220 and the pins 321, even with positional errors in the housing and screw cap, the pins 321 can still smoothly pass through the locking holes 220. At this point, rotating the screwing component 320 will use the pins 321 to drive the caliper disc 200 to rotate, thus smoothly screwing the screw cap. The damper screw cap screwing device of this application can accommodate positional errors in the housing and screw cap, and can smoothly screw the screw cap even with large positional errors.

[0043] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0044] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A shock absorber screw cap screwing apparatus characterized by, include: The base frame has a machining area for placing the housing; The caliper disc has a jaw with a locking screw cap in the center; as well as A screwing assembly includes a slide, a screwing component, and a rotary drive component. The screwing component is rotatably mounted on the slide, and the rotary drive component is connected to the screwing component to drive the screwing component to rotate. The slide is slidably disposed on the base frame, and its sliding trajectory has a first position where the screwing component engages with the caliper disc, and a second position where it disengages from the caliper disc. When the slide is in the first position, the screwing component is in clearance fit with the caliper disc.

2. The shock absorber screw cap screwing apparatus according to claim 1, characterized by, The caliper disc has a plurality of locking holes on its outer periphery. The screwing component has a plurality of pins corresponding to the plurality of locking holes. When the slide is in the first position, the pins are inserted into the plurality of locking holes one by one, and the pins are in clearance fit with the locking holes.

3. The shock absorber screw cap screwing apparatus according to claim 2, characterized by Several of the aforementioned locking holes are arranged circumferentially along the caliper disc.

4. The shock absorver cover screwing apparatus according to claim 1, wherein The screwing component has a slot, which is fitted around the outer periphery of the caliper disc so that the screwing component drives the caliper disc to rotate, and the slot is in clearance fit with the outer periphery of the caliper disc.

5. The shock absorver cover screwing apparatus according to claim 1, wherein The slide block has an installation port, the screwing component has a rotating shaft, the screwing assembly also includes a bearing, the outer circumference of the bearing is embedded in the installation port, and the inner ring of the bearing is sleeved on the outer circumference of the rotating shaft.

6. The shock absorber screw cap screwing apparatus according to claim 5, characterized by The rotary drive component further includes a rotary hydraulic cylinder, which is mounted on the slide and is connected to the rotating shaft.

7. The shock absorver cover screwing apparatus according to claim 1, wherein The processing station is provided with a positioning groove.

8. The shock absorver cover screwing apparatus according to claim 1, wherein The base frame is provided with slide rails, and the slide block is slidably mounted on the slide rails.

9. The damper cap screw tightening device according to claim 8, characterized in that, The screwing assembly further includes a sliding drive component, which is kinetically connected to the slide block to switch the slide block between the first position and the second position.

10. The damper screw cap tightening device according to claim 1, characterized in that, One end of the jaws extends radially through the caliper disc, and the end of the jaws extending through the caliper disc forms a guide wedge surface.