Air spring dust cover and installation method thereof

Abstract

The present application relates to the technical field of vehicle shock absorbers, and in particular to an air spring dust cover and its installation method. The air spring dust cover includes a dust cover body, which is sleeved on the outside of the air spring, and the first end of the dust cover body is connected to the casing; the second end of the dust cover body forms a clamping groove, and a tray is provided on the outer wall of the shock absorber, and the tray is clamped in the clamping groove. A reinforcing flange is provided on the circumferential outer wall of the clamping groove. When the dust cover body undergoes a large degree of stretching or compression, the reinforcing flange reinforces the side wall of the clamping groove, so that the clamping groove is not easily deformed, thereby preventing the tray from falling out of the clamping groove, ensuring the stability of the clamping between the clamping groove and the tray, and ensuring the stability of the clamping between the dust cover body and the shock absorber; similarly, the side wall of the clamping groove will not be broken due to excessive force, so that the dust cover body can normally protect the air spring.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle shock absorbers, and in particular to an air spring dust cover and a method for installing the same. Background Art

[0002] Air springs are usually installed on the chassis of automobiles to improve the driving comfort of the vehicle; the outside of the air spring is usually covered with a dust cover to prevent mud and sand from entering the inside of the air spring and causing wear on the air spring bladder. When installed, the dust cover is generally connected to the casing of the air spring at one end and to the shock absorber at the other end. However, the existing installation structure of the dust cover and the shock absorber is not firm. The dust cover is often separated from the shock absorber when stretched or compressed, causing external mud and sand to enter the inside of the air spring, resulting in increased wear of the air spring bladder, and in severe cases, causing the air spring to fail. Summary of the invention

[0003] The object of the present invention is to provide an air spring dust cover and an installation method thereof, so as to improve the strength and stability of the connection between the dust cover and the shock absorber to a certain extent.

[0004] The present invention provides an air spring dust cover, comprising a dust cover body; the dust cover body is used to be sleeved on the outside of the air spring; the first end of the dust cover body in the length direction is used to connect with the protective sleeve of the air spring, and the second end of the dust cover body is used to connect with the shock absorber; the second end of the dust cover is formed with a clamping groove, and the outer side wall of the shock absorber is provided with a tray, and the tray is clamped in the clamping groove; a reinforcing flange is provided on the circumferential outer side wall of the clamping groove, and the reinforcing flange is arranged around the circumference of the clamping groove.

[0005] Further, the reinforcing flange is an integral ring; or,

[0006] The reinforcing flange includes a plurality of flange portions, and the plurality of flange portions are distributed at intervals in the circumferential direction around the clamping groove.

[0007] Furthermore, the clamping groove is elastic, and a diameter of the clamping groove is smaller than a diameter of the tray.

[0008] Furthermore, the reinforcing flange is used to be connected to a clamping mechanism, and the clamping mechanism can clamp the reinforcing flange; the clamping mechanism can pull the reinforcing flange toward the outside of the snap-in groove, so that the snap-in groove is elastically deformed until the diameter of the snap-in groove is larger than the diameter of the tray; the clamping mechanism can drive the reinforcing flange to move toward the tray, so that the second end of the dust cover body moves toward the tray until the snap-in groove is opposite to the tray.

[0009] Furthermore, the first end of the dust cover body is clamped on the casing by a clamp; an installation groove is formed on the outer side wall of the first end of the dust cover body along its circumference, and the clamp is installed in the installation groove.

[0010] Furthermore, a vent hole is provided on the dust cover body; the vent hole is located at one end of the dust cover body close to the clamping groove.

[0011] Furthermore, there are a plurality of ventilation holes, and the plurality of ventilation holes are distributed at intervals along the circumference of the dust cover body.

[0012] Furthermore, the dust cover body is in a bellows shape; the corrugations on the dust cover are U-shaped or V-shaped.

[0013] Furthermore, the corrugations on the dust cover are a plurality of large corrugations and a plurality of small corrugations arranged alternately in sequence.

[0014] The present invention also provides an air spring dust cover installation method, comprising the following steps:

[0015] Step 100: sleeve the dust cover body on the outside of the air spring, and fix the first end of the dust cover body on the sleeve of the air spring by using a clamp;

[0016] Step 200: sleeve the air spring onto the shock absorber;

[0017] Step 300: Clamp the reinforcing flange on the clamping groove by using a clamping mechanism and pull it outward to expand the clamping groove;

[0018] Step 400, inflate the air spring so that the air spring can move until the piston of the air spring abuts against the tray of the shock absorber;

[0019] Step 500: The dust cover body is driven to move toward the tray through the clamping mechanism, so that the tray enters the clamping slot;

[0020] Step 600: The clamping mechanism releases the reinforcing flange, and the clamping groove recovers its deformation and clamps on the pallet, and the pallet is clamped in the clamping groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The air spring dust cover provided by the present invention comprises a dust cover body, the dust cover body is used to be sleeved on the outside of the air spring, and the first end of the dust cover body in the length direction is connected to the sleeve of the air spring; when the air spring is sleeved and installed on the shock absorber, the second end of the dust cover body in the length direction is connected to the shock absorber. For the connection between the dust cover body and the shock absorber, a tray is provided on the outer wall of the shock absorber, and a clamping groove is formed at the second end of the dust cover body, and the tray can extend into the interior of the second end of the dust cover body and be clamped in the clamping groove. A reinforcing flange is provided on the circumferential outer wall of the clamping groove, and the reinforcing flange is arranged on the outer wall of the clamping groove along the circumference of the clamping groove, so as to reinforce the strength of the outer wall of the clamping groove through the reinforcing flange, so that the clamping groove is less likely to be broken and deformed than when there is no reinforcing flange; therefore, when the dust cover body is stretched or compressed to a large extent due to the operation of the air spring and the shock absorber, the reinforcing flange can reinforce the side wall of the clamping groove, so that the clamping groove is less likely to be deformed, thereby avoiding The tray is prevented from escaping from the snap-in slot, thereby ensuring the stability of the snap-in connection between the snap-in slot and the tray, and ensuring the stability of the snap-in connection between the dust cover body and the shock absorber; similarly, when the dust cover body is stretched or compressed to a large extent due to the operation of the air spring and the shock absorber, the reinforcement of the side wall of the snap-in slot by the reinforcing flange can prevent the side wall of the snap-in slot from breaking due to excessive force, thereby ensuring the integrity of the dust cover body, and then enabling the dust cover body to normally protect the air spring.

[0023] The present invention also provides an air spring dust cover installation method, comprising the following steps: first, the dust cover body is sleeved on the outside of the air spring, and the first end of the dust cover body is fixed to the casing of the air spring by using a clamp; next, the air spring is sleeved on the shock absorber; next, the reinforcing flange on the clamping groove is clamped by a clamping mechanism and pulled outward to expand the clamping groove; next, the air spring is inflated so that the air spring can move to the point where the piston of the air spring abuts against the tray of the shock absorber; next, the dust cover body is driven toward the tray by the clamping mechanism to allow the tray to enter the clamping groove; next, the clamping mechanism releases the reinforcing flange, the clamping groove recovers its deformation and is clamped on the tray, and the tray is clamped in the clamping groove; thereby the installation of the dust cover body is completed conveniently and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1A schematic structural diagram of a dust cover body provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the structure after the two ends of the dust cover body, the casing and the tray are installed according to an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of an intermediate state of the installation process of the dust cover body and the tray provided in an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1-dust cover body, 11-clamping groove, 12-reinforcement flange, 13-installation groove, 14-vent, 2-casing, 3-shock absorber, 31-tray, 4-clamping mechanism. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0032] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Refer to the following Figures 1 to 3 An air spring dust cover and an installation method thereof according to some embodiments of the present application are described.

[0036] The present application provides an air spring dust cover, such as Figure 1 and Figure 2 As shown, the air spring dust cover includes a dust cover body 1, which is used to be mounted on the outside of the air spring, and the first end of the dust cover body 1 in the length direction is connected to the casing 2 of the air spring; when the air spring is mounted on the shock absorber 3, the second end of the dust cover body 1 in the length direction is connected to the shock absorber 3, so that a closed space is formed between the casing 2 and the shock absorber 3 through the dust cover to prevent mud, sand and gravel outside the air spring from entering the interior of the air spring and aggravating the wear of the bladder skin of the air spring.

[0037] For the connection between the dust cover body 1 and the shock absorber 3, a tray 31 is provided on the outer wall of the shock absorber 3 so as to protrude around the circumference of the shock absorber 3. For example, the tray 31 is an annular protrusion formed on the outer wall of the shock absorber 3. A snap-fit ​​groove 11 is formed at the second end of the dust cover body 1. When the dust cover body 1 and the shock absorber 3 are installed, the tray 31 can extend into the interior of the second end of the dust cover body 1 and snap-fit ​​into the snap-fit ​​groove 11, thereby completing the snap-fit ​​connection between the dust cover body 1 and the shock absorber 3.

[0038] A reinforcing flange 12 is provided on the circumferential outer wall of the clamping groove 11, and the reinforcing flange 12 is arranged on the outer wall of the clamping groove 11 along the circumference of the clamping groove 11, so as to reinforce the strength of the outer wall of the clamping groove 11 through the reinforcing flange 12, so that the clamping groove 11 is less likely to be broken and deformed (for example, elastically deformed) than when there is no reinforcing flange 12; thus, when the dust cover body 1 is stretched or compressed to a large extent due to the operation of the air spring and the shock absorber 3, the reinforcing flange 12 can reinforce the side wall of the clamping groove 11, so that the clamping groove 11 is less likely to be broken and deformed (for example, elastically deformed). Deformation is produced, thereby preventing the tray 31 from escaping from the snap-in groove 11, ensuring the stability of the snap-in connection between the snap-in groove 11 and the tray 31, and ensuring the stability of the snap-in connection between the dust cover body 1 and the shock absorber 3; similarly, when the dust cover body 1 is stretched or compressed to a large extent due to the operation of the air spring and the shock absorber 3, the reinforcement of the side wall of the snap-in groove 11 by the reinforcing flange 12 can prevent the side wall of the snap-in groove 11 from breaking due to excessive force, thereby ensuring the integrity of the dust cover body 1, and enabling the dust cover body 1 to normally protect the air spring.

[0039] In this embodiment, preferably, the reinforcing flange 12 can be an integral ring-shaped one, so that the reinforcing flange 12 is arranged around the circumferential outer wall of the snap-in groove 11 to reinforce the strength of the outer wall of the snap-in groove 11 through the annular reinforcing flange 12.

[0040] In this embodiment, preferably, the reinforcing flange 12 may include a plurality of flange portions, and the plurality of flange portions are distributed on the circumferential outer wall of the snap-in groove 11 at intervals along the circumference of the snap-in groove 11, so as to reinforce the strength of the outer wall of the snap-in groove 11 by the plurality of flange portions arranged at intervals.

[0041] In one embodiment of the present application, preferably, the snap-in slot 11 is elastic, so that the snap-in slot 11 can be elastically deformed when subjected to external force; for example, pulling the side wall of the snap-in slot 11 outward can increase the diameter of the snap-in slot 11 due to elastic deformation.

[0042] When the snap-in slot 11 is in a natural state without being subjected to external force, the diameter of the snap-in slot 11 (here, the inner diameter of the snap-in slot 11) is smaller than the diameter of the tray 31 (here, the outer diameter of the snap-in slot 11); thus, when the snap-in slot 11 is sleeved on the tray 31, the side wall of the snap-in slot 11 can be pulled by external force to increase the diameter of the snap-in slot 11, so that the snap-in slot 11 can be sleeved on the outside of the tray 31, and then the external force applied to the snap-in slot 11 is removed, and the snap-in slot 11 will restore its deformation and be tightly clamped on the tray 31, so that the tray 31 is stably and firmly clamped in the snap-in slot 11.

[0043] At the same time, by providing a reinforcing flange 12 on the outer wall of the snap-in groove 11, the snap-in groove 11 can withstand greater external force, thereby preventing the snap-in groove 11 from deforming and separating from the tray 31 due to greater stretching or compression when the dust cover body 1 protects the air spring.

[0044] Preferably, the snap-in groove 11 is integrally formed at the second end of the dust cover body 1 , and the dust cover body 1 and the snap-in groove 11 are both made of EPDM (Ethylene Propylene Diene Monomer).

[0045] In one embodiment of the present application, preferably, Figure 3 As shown, the reinforcing flange 12 can be used to connect with the clamping mechanism 4; the clamping mechanism 4 can clamp the reinforcing flange 12 and drive the reinforcing flange 12 to move.

[0046] For example, the clamping mechanism 4 can apply a pulling force along the radial direction of the clamping groove 11 and toward the outside of the clamping groove 11 to the reinforcing flange 12, so that the reinforcing flange 12 moves toward the outside of the clamping groove 11, thereby causing the clamping groove 11 to undergo elastic deformation and increase the diameter of the clamping groove 11. At the same time, the clamping mechanism 4 can also drive the reinforcing flange 12 to move along the axial direction of the shock absorber 3 toward the tray 31, so that the second end of the dust cover body 1 and the clamping groove 11 move toward the direction close to the tray 31.

[0047] When the coupling groove 11 is coupled to the tray 31 on the shock absorber 3, since the diameter of the coupling groove 11 is relatively small, the reinforcing flange 12 on the side wall of the coupling groove 11 can be clamped by the clamping mechanism 4 and pulled outward to cause elastic deformation of the coupling groove 11, so that the diameter of the coupling groove 11 becomes larger than the diameter of the tray 31, thereby ensuring that the tray 31 can enter the coupling groove 11.

[0048] Then, the reinforcing flange 12 is driven by the clamping mechanism 4 to move toward the direction of the tray 31, so that the second end of the dust cover body 1 moves toward the tray 31 until it is sleeved on the outside of the tray 31, and the tray 31 is opposite to the snap-in groove 11; thereafter, the clamping mechanism 4 loosens the reinforcing flange 12, and the snap-in groove 11 can restore its deformation, tighten and snap-in to the outside of the tray 31, thereby conveniently and quickly completing the snap-in connection between the snap-in groove 11 and the tray 31.

[0049] In one embodiment of the present application, preferably, Figure 3 As shown, the clamping mechanism 4 may include a plurality of clamping claws, which are disposed around the outside of the clamping groove 11 to clamp the reinforcing flange 12 through the plurality of clamping claws and apply a uniform pulling force to the side wall of the clamping groove 11 .

[0050] When the reinforcing flange 12 is a plurality of flange portions arranged at intervals, the plurality of clamping jaws correspond to the plurality of flange portions one by one, and the plurality of clamping jaws can clamp the corresponding flange portions respectively.

[0051] Preferably, the clamping mechanism 4 further includes a first driving assembly (not shown in the figure), the first driving assembly includes a plurality of driving ends, the plurality of driving ends are circumferentially spaced around the axis of the clamping groove 11, and the plurality of clamping claws are mounted on the plurality of driving ends in a one-to-one correspondence. The plurality of driving ends can reciprocate along the radial direction of the position, thereby driving the plurality of clamping claws and the flanged portion clamped by the clamping claws to move along the radial direction of the clamping groove 11.

[0052] Preferably, the clamping mechanism 4 further includes a second driving assembly (not shown in the figure), the first driving assembly is installed at the driving end of the second driving assembly, and the second driving assembly can drive the first driving assembly to move along the axial direction of the shock absorber 3.

[0053] In one embodiment of the present application, preferably, a sleeve portion is also formed at the edge of the snap-in groove 11. When the snap-in groove 11 is snap-fitted with the tray 31, the sleeve portion is sleeved on the shock absorber 3 and is clamped to the shock absorber 3 through a clamping member, thereby further ensuring the firmness and stability of the connection between the dust cover body 1 and the shock absorber 3.

[0054] Regarding the connection between the first end of the dust cover body 1 and the sleeve 2 of the air spring, in one embodiment of the present application, preferably, as Figure 2 As shown, the first end of the dust cover body 1 is sleeved on the outside of the casing 2 and is tightly clamped on the casing 2 by a clamp, thereby ensuring the stability of the connection between the dust cover body 1 and the casing 2, so that the dust cover body 1 will not be detached from the casing 2 when the dust cover body 1 is stretched or compressed to a large extent.

[0055] Preferably, if Figure 1 As shown, a mounting groove 13 is provided on the outer side wall of the first end of the dust cover body 1, and the mounting groove 13 is annular and is arranged on the outer side wall of the first end of the dust cover body 1 along the circumferential direction of the dust cover body 1; when the first end of the dust cover body 1 is sleeved on the outside of the protective tube 2, the mounting groove 13 is opposite to the protective tube 2, and when the protective tube 2 and the dust cover body 1 are clamped by the clamp, the clamp is embedded in the mounting groove 13, so that the clamp is not easy to detach from the dust cover body 1, and then the first end of the dust cover body 1 can be stably and firmly clamped on the protective tube 2 through the clamp.

[0056] In one embodiment of the present application, preferably, Figure 1As shown, a vent hole 14 is provided on the dust cover body 1, and the vent hole 14 is located at one end of the dust cover body 1 close to the snap-in groove 11. The interior of the dust cover body 1 can be connected to the external environment through the vent hole 14, so that the dust cover body 1 can be stretched or contracted smoothly.

[0057] Preferably, there are a plurality of vent holes 14 , and the plurality of vent holes 14 are spaced apart and distributed along the circumferential direction of the dust cover body 1 .

[0058] In one embodiment of the present application, preferably, Figure 1 As shown, the dust cover body 1 is in the shape of a bellows, and the waveforms thereon enable the dust cover to be stretched or compressed when the air spring and the shock absorber 3 are working.

[0059] Preferably, the waveform on the dust cover body 1 is U-shaped or V-shaped.

[0060] Preferably, the waveform on the dust cover main body 1 includes multiple large waveforms and multiple small waveforms, the large waveform is a waveform with larger peaks and troughs, and the small waveform is a waveform with smaller peaks and troughs, and the multiple large waveforms and the multiple small waveforms are distributed alternately in sequence, so as to meet the telescopic working conditions and make the dust cover main body 1 have a stronger recovery ability.

[0061] The present application also provides an air spring dust cover installation method, comprising the following steps:

[0062] Step 100: sleeve the dust cover body on the outside of the air spring, and fix the first end of the dust cover body on the sleeve of the air spring by using a clamp;

[0063] Step 200: sleeve the air spring onto the shock absorber;

[0064] Step 300: Clamp the reinforcing flange on the clamping groove by using a clamping mechanism and pull it outward to expand the diameter of the clamping groove;

[0065] Step 400, inflate the air spring so that the air spring can move until the piston of the air spring abuts against the tray of the shock absorber;

[0066] Step 500: The dust cover body is driven to move toward the tray through the clamping mechanism, so that the tray enters the clamping slot;

[0067] Step 600, the clamping mechanism releases the reinforcing flange, the snap-in groove recovers its deformation and is clamped on the pallet, the pallet and the snap-in groove are snapped together, and the dust cover body and the shock absorber are snapped together.

[0068] Through this installation method, the connection between the two ends of the dust cover body and the protective sleeve of the air spring and the tray of the shock absorber can be quickly and conveniently completed, and by providing the outer wall of the snap-in groove with a reinforced flange, the stability of the snap-in connection between the dust cover body and the tray can be ensured, so that the snap-in groove is not easily deformed to cause the tray to fall out of the snap-in groove, and the snap-in groove is not easily broken.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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.

Claims

1. An air spring dust cover, It is characterized in that Including a dust cover body; The dust cover body is used to be sleeved on the outside of the air spring; The first end of the dust cover body in the length direction is used to connect with the sleeve of the air spring, and the second end of the dust cover body is used to connect with the shock absorber; A clamping groove is formed at the second end of the dust cover, and a tray is provided on the outer side wall of the shock absorber, and the tray is clamped in the clamping groove; A reinforcing flange is arranged on the outer circumferential side wall of the clamping groove, and the reinforcing flange is arranged around the circumference of the clamping groove.

2. The air spring dust cover according to claim 1, It is characterized in that The reinforcing flange is an integral ring; or The reinforcing flange includes a plurality of flange portions, and the plurality of flange portions are distributed at intervals in the circumferential direction around the clamping groove.

3. The air spring dust cover according to claim 1, It is characterized in that The clamping slot is elastic, and a diameter of the clamping slot is smaller than a diameter of the tray.

4. The air spring dust cover according to claim 3, It is characterized in that The reinforcing flange is used to be connected to a clamping mechanism, and the clamping mechanism can clamp the reinforcing flange; The clamping mechanism can pull the reinforcing flange toward the outside of the clamping slot, so that the clamping slot is elastically deformed until the diameter of the clamping slot is larger than the diameter of the tray; The clamping mechanism can drive the reinforcing flange to move toward the tray, so that the second end of the dust cover body moves toward the tray until the clamping groove is opposite to the tray.

5. The air spring dust cover according to claim 1, It is characterized in that The first end of the dust cover body is clamped on the casing by a clamp; An installation groove is formed on the outer side wall of the first end of the dust cover body along its circumference, and the clamp is installed in the installation groove.

6. The air spring dust cover according to claim 1, It is characterized in that The dust cover body is provided with a vent hole; The vent hole is located at one end of the dust cover body close to the clamping groove.

7. The air spring dust cover according to claim 6, It is characterized in that The number of the vent holes is multiple, and the multiple vent holes are distributed at intervals along the circumference of the dust cover body.

8. The air spring dust cover according to claim 1, It is characterized in that The dust cover body is in the shape of a bellows; The corrugations on the dust cover are U-shaped or V-shaped.

9. The air spring dust cover according to claim 8, It is characterized in that The corrugations on the dust cover are a plurality of large corrugations and a plurality of small corrugations which are arranged alternately in sequence.

10. A method for installing an air spring dust cover. It is characterized in that The following steps are involved: Step 100: sleeve the dust cover body on the outside of the air spring, and fix the first end of the dust cover body on the sleeve of the air spring by using a clamp; Step 200, sleeve the air spring on the shock absorber; Step 300: Clamp the reinforcing flange on the clamping slot with a clamping mechanism and pull it outward to expand the clamping slot; Step 400, inflate the air spring so that the air spring can move until the piston of the air spring abuts against the tray of the shock absorber; Step 500: The dust cover body is driven to move toward the tray through the clamping mechanism, so that the tray enters the clamping slot; Step 600: The clamping mechanism releases the reinforcing flange, and the clamping groove recovers its deformation and clamps on the pallet, and the pallet is clamped in the clamping groove.

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