Mounting structure for an air spring slide post assembly

Abstract

The utility model relates to an installation structure of air spring sliding column subassembly, including air spring and shock absorber, shock absorber includes shock absorber pipe and the piston rod of setting in shock absorber pipe, piston rod end and air spring are connected, and air spring includes the uncoiling piston of setting in the outer periphery of shock absorber pipe, and the outer periphery fixed of shock absorber pipe is provided with the installation tray, and the installation sleeve is set up between the piston rod and air spring, and the bearing is equipped between the installation sleeve and installation tray, and the bearing sleeve is equipped in shock absorber pipe, and the installation sleeve is placed between shock absorber pipe and uncoiling piston and promotes the installation sleeve to be able to with the bearing of installation tray tight pressure, realizes the relative rotation between uncoiling piston and shock absorber pipe, avoided the rigid connection between uncoiling piston and shock absorber pipe, and the stable rotation support provided by bearing reduces the relative slack between uncoiling piston and shock absorber pipe, avoided the risk that metal parts collide and produce the abnormal sound.

Description

Technical Field

[0001] This utility model relates to the field of air spring technology, and specifically to an installation structure for an air spring slide assembly. Background Technology

[0002] The air spring strut assembly for motor vehicles is a core suspension component integrating air springs and shock absorbers. It mainly consists of an air spring bladder, shock absorber, outer guide section, and bellows. The air spring cover and piston clamp the elastic body bladder to form a pressure chamber, using compressed air to achieve elastic support. At the same time, the shock absorber dampens vibrations. When it is working, the bladder rolls on the piston to form a rolled fold section, and the outer guide section provides structural support. The bellows protects the rolled fold section from contamination and is equipped with a ventilation device to promote air circulation. This assembly is clamped between the vehicle body and chassis and can dynamically adjust the air pressure to adapt to changes in load and road conditions. It has both elastic support and vibration damping functions and is widely used in passenger cars and commercial vehicles to improve comfort and handling.

[0003] Publication number CN222798015U discloses an installation structure for an air spring slide assembly, including an air spring and an integrated shock absorber. The shock absorber includes a shock absorber tube and a piston rod. One end of the piston rod is connected to a top rubber assembly via an installation mechanism. The top rubber assembly is housed within an upper air chamber component. The top rubber assembly includes a support member, a top rubber, and an outer frame. One end of the top rubber engages with the support member, and the other end engages with the outer frame. The outer frame has a radially outward-flaring flange at the end facing the upper top cover. The upper top cover is detachably connected to the upper air chamber component. The lower end face abuts against the upper part of the upper air chamber, and there is a gap between the lower end of the outer frame and the bottom space of the upper part of the upper air chamber. The lower end is suspended to ensure that the flanged part is pressed tightly against the upper part of the upper air chamber, and the outer frame will not contact the plastic air chamber and damage the plastic parts. However, when the torsion angle is large, it is difficult to balance the connection strength between the piston and the shock absorber. If the connection is too weak, it will easily lead to relative loosening and abnormal noise. If the connection is too strong, it will restrict the torsional freedom, forcing the bladder to bear too much torque and causing durability failure. Therefore, there is still some room for improvement in this technology. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an installation structure for an air spring slide assembly, addressing the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an installation structure for an air spring slide assembly, comprising an air spring and a vibration damper. The vibration damper includes a vibration damper tube and a piston rod disposed within the vibration damper tube. The end of the piston rod is connected to the air spring. The air spring includes an unwinding piston disposed on the outer periphery of the vibration damper tube. The characteristic feature is that an installation tray is fixedly disposed on the outer periphery of the vibration damper tube. An installation sleeve is disposed on the upper end of the vibration damper tube on the installation tray. A bearing is disposed between the installation sleeve and the installation tray. The bearing is sleeved on the vibration damper tube. The installation sleeve is positioned between the vibration damper tube and the unwinding piston to ensure that the installation sleeve can press the bearing tightly against the installation tray.

[0006] In the above technical solution, a bearing is installed between the mounting tray fixed to the outer periphery of the shock absorber tube and the mounting sleeve located at its upper end. The bearing is sleeved on the shock absorber tube, and the mounting sleeve is placed between the shock absorber tube and the unwinding piston, pressing the bearing tightly against the mounting tray. The mounting tray serves as a fixed base, and the mounting sleeve rotates around its axis relative to the mounting tray through the tightly pressed bearing. Since the mounting sleeve is located between the shock absorber tube and the unwinding piston, the torsional motion of the unwinding piston can be transmitted to the bearing through the mounting sleeve, thereby achieving relative rotation between the unwinding piston and the shock absorber tube. The relative rotation achieved through the bearing connection avoids a rigid connection between the unwinding piston and the shock absorber tube. When the torsional angle is large, the torque transmitted to the bladder can be reduced, avoiding durability failure caused by excessive deformation of the bladder due to excessively strong connection. On the other hand, the stable rotational support provided by the bearing reduces the relative looseness between the unwinding piston and the shock absorber tube, avoiding the risk of abnormal noise caused by collision of metal parts.

[0007] The aforementioned air spring slide assembly mounting structure can be further configured such that: the bearing includes an inner bearing ring and an outer bearing ring, the inner bearing ring is fitted onto the damper tube with an interference fit, and the outer bearing ring is fitted with the lower end of the unwinding piston with a clearance fit.

[0008] Using the above technical solution, the inner ring of the bearing and the damper tube are fitted with an interference fit. The interference between the inner ring and the damper tube creates a radial clamping force after assembly, making the inner ring and the damper tube fit tightly as a rigid whole. This ensures that there is no relative rotation or axial movement between the two during operation, thereby stably transmitting torque and supporting force. The outer ring of the bearing and the lower end of the uncoiling piston are fitted with a clearance fit. The technical principle is that a certain radial or axial clearance is reserved between the outer ring and the uncoiling piston, allowing the uncoiling piston to drive the outer ring to rotate around the axis relative to the inner ring, that is, relative to the damper tube.

[0009] The above-mentioned air spring slide assembly mounting structure can be further configured as follows: the lower end of the unwinding piston is provided with a mounting groove for the inner ring of the bearing to be embedded in the mounting groove, the outer ring of the bearing is placed in the mounting groove and is clearance-fitted with the mounting groove, a sealing element is provided between the unwinding piston and the top of the mounting sleeve, and the inner ring of the bearing abuts against the bottom of the mounting sleeve to enable the mounting sleeve to press tightly against the sealing element.

[0010] The above technical solution involves setting an installation groove at the lower end of the uncoiling piston, embedding the bearing outer ring into the groove, and reserving a radial or axial clearance. This allows the bearing outer ring to generate a small relative displacement or rotation within the installation groove. When the air spring is subjected to a large torsional angle, the torsional motion of the uncoiling piston can be transmitted to the bearing through the gap between the installation groove and the bearing outer ring, allowing a certain degree of relative motion freedom between the uncoiling piston and the bearing outer ring. This avoids a rigid connection between the uncoiling piston and the bearing outer ring. A seal is installed between the uncoiling piston and the installation sleeve, using the compression deformation of the seal to fill the fit gap. The effect of this design is that it effectively prevents the leakage of gas inside the air spring through the gap between the uncoiling piston and the installation sleeve, while preventing external dust, moisture, and other impurities from entering the bearing, avoiding impurities that could cause bearing jamming or wear, ensuring the smooth rotation of the bearing under torsional conditions, and indirectly improving the stability of the connection structure.

[0011] The installation structure of the aforementioned air spring slide assembly can be further configured as follows: the mounting tray includes a support portion that abuts against the inner ring of the bearing, a flange portion is fixedly installed at the bottom of the support portion, a dust cover is sleeved on the outer periphery of the unwinding piston, and a groove is provided at the end of the dust cover to engage with the flange portion.

[0012] Using the above technical solution, the support part serves as the axial load-bearing structure of the mounting tray. Its upper end face directly contacts the lower end face of the bearing inner ring, and it forms a "clamping" fit with the bottom of the mounting sleeve against the upper end face of the bearing inner ring. Through the interference fit between the bearing inner ring and the damper tube, the bearing inner ring is axially fixed between the support part and the mounting sleeve. The flange part serves as the basic fixing structure of the mounting tray and is fixed to the bottom of the support part by means of bolt connection, welding, or integral molding. The dust cover is made of flexible or semi-rigid material and is sleeved on the outer periphery of the uncoiling piston. An annular groove is provided at its lower end, and a corresponding locking protrusion or annular locking edge is provided on the outer periphery of the flange part. Through the elastic engagement of the groove and the locking protrusion, the dust cover covers the gap between the uncoiling piston and the mounting tray.

[0013] The mounting structure of the aforementioned air spring slide assembly can be further configured such that: a plurality of rotating balls are provided between the inner ring and the outer ring of the bearing, and the rotating balls are connected to each other by a retainer.

[0014] Using the above technical solution, the rotating ball is the rolling element between the inner and outer rings of the bearing, which transforms the relative sliding friction between the inner and outer rings into rolling friction between the ball and the raceway. The cage separates the rotating balls at intervals to prevent the balls from squeezing or colliding with each other due to centrifugal force or torsional force during rolling, thus avoiding dents or debris on the surface of the balls.

[0015] The mounting structure of the aforementioned air spring slide assembly can be further configured such that the lower end of the unwinding piston is an arc surface, and the mounting groove is placed within the arc surface.

[0016] Using the above technical solution, the mounting groove is set inside the arc surface, rather than outside the arc surface or on an independent plane. The groove body and the arc surface are structurally integrated, ensuring that the mounting center of the bearing outer ring, the curvature center of the arc surface, and the torsion center of the uncoiling piston are coaxial, thus realizing the "concentric rotation" of the bearing outer ring when it rotates with the uncoiling piston.

[0017] The installation structure of the above-mentioned air spring slide assembly can be further configured as follows: the air spring further includes an upper air chamber disposed on the outer periphery of the piston rod, the piston rod is provided with a buffer block at the bottom of the upper air chamber, the buffer block is sleeved on the piston rod, the upper air chamber is provided with an air bladder on the side facing the unwinding piston, and the end of the air bladder is engaged with a dust cover.

[0018] By adopting the above technical solution, the upper air chamber is sleeved on the outer periphery of the piston rod, achieving a coaxial arrangement between the upper air chamber and the piston rod. This effectively avoids dynamic swaying caused by eccentricity. The buffer block on the piston rod located at the bottom of the upper air chamber is made of elastic material. When the air spring is compressed to its limit, it can absorb impact energy through elastic deformation, avoiding rigid collision between the bottom of the upper air chamber and the piston rod, absorbing some high-frequency vibrations, and reducing fatigue wear of the components. The snap-fit ​​structure between the airbag end and the dust cover not only restricts the radial displacement of the airbag end and prevents the airbag from excessively rubbing against the outer periphery of the unwinding piston due to centrifugal force under large torsional angles, but also ensures the shape stability of the airbag when it is inflated and under pressure.

[0019] The above-mentioned air spring slide assembly installation structure can be further configured as follows: the airbag includes an outer cover and an inner liner, the outer cover is disposed on the outer periphery of the inner liner, one end of the inner liner is connected to the upper air chamber, the other end of the inner liner is connected to the unwinding piston, the unwinding piston and the inner liner are connected by a lower buckling ring, and the inner liner and the upper air chamber are connected by an upper buckling ring.

[0020] Using the above technical solution, the outer cover is set on the outer periphery of the inner liner to form an outer layer of sealing and protection. The inner liner is placed between the upper air chamber and the outer cover, and one end is connected to the unwinding piston through the lower buckling ring. The inner liner and the upper air chamber are connected by the upper buckling ring. The rigid connection between the upper buckling ring and the lower buckling ring ensures the connection strength between the airbag and the upper air chamber and the unwinding piston, preventing gas leakage. At the same time, the direct connection between the inner liner and the unwinding piston can transfer some of the torque to the unwinding piston through the lower buckling ring, reducing the torsional force on the outer cover and alleviating the durability failure of the outer cover due to excessive deformation.

[0021] The beneficial effects of this utility model are as follows: A bearing is set between the mounting tray fixed to the outer periphery of the shock absorber tube and the mounting sleeve located at its upper end, so as to realize the relative rotation between the unwinding piston and the shock absorber tube. The relative rotation achieved by the bearing connection avoids the rigid connection between the unwinding piston and the shock absorber tube. The stable rotation support provided by the bearing reduces the relative loosening between the unwinding piston and the shock absorber tube, and avoids the risk of abnormal noise caused by the collision of metal parts. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an enlarged view of the structure at point A of this utility model; Label annotations: 1-Air spring, 2-Shock absorber, 3-Shock absorber tube, 4-Piston rod, 5-Unwinding piston, 6-Mounting tray, 7-Mounting sleeve, 8-Bearing, 9-Bearing inner ring, 10-Bearing outer ring, 11-Mounting groove, 12-Seal, 13-Support, 14-Flange, 15-Dust cover, 16-Rotating ball, 17-Cage, 18-Arc surface, 19-Upper air chamber, 20-Buffer block, 21-Air bladder, 22-Outer cover, 23-Inner liner, 24-Lower retaining ring, 25-Upper retaining ring. Detailed Implementation

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0024] like Figure 1-2The present invention provides the following technical solution: an installation structure for an air spring slide assembly, comprising an air spring 1 and a shock absorber 2. The shock absorber 2 includes a shock absorber tube 3 and a piston rod 4 disposed within the shock absorber tube 3. The end of the piston rod 4 is connected to the air spring 1. The air spring 1 includes an unwinding piston 5 disposed on the outer periphery of the shock absorber tube 3. An installation tray 6 is fixedly disposed on the outer periphery of the shock absorber tube 3. An installation sleeve 7 is disposed on the upper end of the shock absorber tube 3 on the installation tray 6. A bearing 8 is disposed between the installation sleeve 7 and the installation tray 6. The bearing 8 is sleeved on the shock absorber. The damper tube 3 and the mounting sleeve 7 are positioned between the damper tube 3 and the unwinding piston 5, enabling the mounting sleeve 7 to press tightly against the bearing 8 on the mounting tray 6. The bearing 8 is positioned between the mounting tray 6, which is fixed to the outer periphery of the damper tube 3, and the mounting sleeve 7 located at its upper end. The bearing 8 is sleeved on the damper tube 3. The mounting sleeve 7 is positioned between the damper tube 3 and the unwinding piston 5, and presses tightly against the bearing 8 on the mounting tray 6. The mounting tray 6 serves as a fixed base, and the tightly pressed bearing 8 allows the mounting sleeve 7 to rotate around its axis relative to the mounting tray 6. The mounting sleeve 7 is located between the damper tube 3 and the unwinding piston 5. Between the uncoiling piston 5 and the damper tube 3, the torsional motion of the uncoiling piston 5 can be transmitted to the bearing 8 through the mounting sleeve 7, thereby realizing the relative rotation between the uncoiling piston 5 and the damper tube 3. The relative rotation achieved through the connection of the bearing 8 avoids the rigid connection between the uncoiling piston 5 and the damper tube 3. When the torsional angle is large, it can reduce the torque transmitted to the bladder skin and avoid the durability failure problem caused by excessive deformation of the bladder skin due to excessive connection. On the other hand, the stable rotation support provided by the bearing 8 reduces the relative looseness between the uncoiling piston 5 and the damper tube 3. This avoids the risk of abnormal noise caused by collision of metal parts. The bearing 8 includes an inner ring 9 and an outer ring 10. The inner ring 9 is fitted with the damper tube 3 with an interference fit. The outer ring 10 is fitted with the lower end of the unwinding piston 5 with a clearance fit. The inner ring 9 and the damper tube 3 are fitted with an interference fit. The radial clamping force after assembly is formed by the dimensional interference between the inner ring and the damper tube 3, so that the inner ring and the damper tube 3 are tightly fitted into a rigid whole, ensuring that there is no relative rotation or axial movement between the two during operation, thereby stably transmitting torque and support force.The outer ring 10 of the bearing and the lower end of the uncoiling piston 5 are fitted with a clearance. The technical principle is that a certain radial or axial clearance is reserved between the outer ring and the uncoiling piston 5, allowing the uncoiling piston 5 to drive the outer ring to rotate relative to the inner ring, i.e., relative to the damper tube 3, around its axis. The lower end of the uncoiling piston 5 is provided with a mounting groove 11 for the bearing outer ring 10 to be embedded in it. The bearing outer ring 10 is placed in the mounting groove 11 with a clearance fit. A seal 12 is provided between the uncoiling piston 5 and the top of the mounting sleeve 7. The inner ring 9 of the bearing abuts against the bottom of the mounting sleeve 7, causing the mounting sleeve 7 to tightly press against the seal 12. The lower end of the uncoiling piston 5... An installation groove 11 is provided, and the outer ring 10 of the bearing is embedded in the groove with a radial or axial gap reserved, so that the outer ring 10 of the bearing can generate a small relative displacement or rotation in the installation groove 11. When the air spring 1 is subjected to a large torsional angle, the torsional motion of the uncoiling piston 5 can be transmitted to the bearing 8 through the gap between the installation groove 11 and the outer ring 10 of the bearing, allowing a certain degree of relative motion freedom between the uncoiling piston 5 and the outer ring 10 of the bearing, avoiding the uncoiling piston 5 and the outer ring 10 of the bearing from forming a rigid connection. A seal 12 is provided between the uncoiling piston 5 and the installation sleeve 7, and the compression deformation of the seal 12 is used to fill the fit gap.The effect of this design is to effectively prevent the gas inside the air spring 1 from leaking through the gap between the uncoiling piston 5 and the mounting sleeve 7, while preventing external dust, moisture and other impurities from entering the bearing 8, avoiding impurities from causing the bearing 8 to jam or wear, ensuring the smooth rotation of the bearing 8 under torsional conditions, and indirectly improving the stability of the connection structure. The mounting tray 6 includes a support part 13 that abuts against the inner ring 9 of the bearing. A flange part 14 is fixedly installed at the bottom of the support part 13. A dust cover 15 is fitted around the outer periphery of the uncoiling piston 5, and the end of the dust cover 15 is provided with a snap-fitting function with the flange part 14. The support part 13 serves as the axial load-bearing structure of the mounting tray 6. Its upper end face directly contacts the lower end face of the bearing inner ring 9, and forms a "clamping" fit with the bottom of the mounting sleeve 7 against the upper end face of the bearing inner ring 9. Through the interference fit between the bearing inner ring 9 and the damper tube 3, the bearing inner ring 9 is axially fixed between the support part 13 and the mounting sleeve 7. The flange part 14 serves as the basic fixing structure of the mounting tray 6 and is fixed to the bottom of the support part 13 by bolt connection, welding or integral molding. The dust cover 15 is made of flexible or semi-rigid material and is sleeved on the opening. The outer periphery of the unwinding piston 5 has an annular groove at its lower end, and the outer periphery of the flange 14 has a corresponding locking protrusion or annular locking edge. Through the elastic engagement of the groove and the locking protrusion, the dust cover 15 covers the gap between the unwinding piston 5 and the mounting tray 6. Several rotating balls 16 are provided between the inner ring 9 and the outer ring 10 of the bearing. The rotating balls 16 are connected by a cage 17. The rotating balls 16 are rolling elements between the inner and outer rings of the bearing, converting the relative sliding friction between the inner and outer rings into rolling friction between the balls and the raceway. The cage 17 holds the rotating balls... The 16-slot separation prevents the balls from squeezing and colliding with each other due to centrifugal or torsional forces during rolling, avoiding dents or debris on the ball surface. The lower end of the uncoiling piston 5 is an arc surface 18, and the mounting groove 11 is placed inside the arc surface 18, not on the outside of the arc surface 18 or on an independent plane. The groove and the arc surface 18 are structurally integrated, ensuring that the mounting center of the bearing outer ring 10, the curvature center of the arc surface 18, and the torsion center of the uncoiling piston 5 are coaxial, realizing the "concentric rotation" of the bearing outer ring 10 when it rotates with the uncoiling piston 5.

[0025] like Figure 1-2The present invention provides the following technical solution: an installation structure for an air spring sliding column assembly. The air spring 1 further includes an upper air chamber 19 disposed on the outer periphery of the piston rod 4. A buffer block 20 is provided at the bottom of the upper air chamber 19, and the buffer block 20 is sleeved on the piston rod 4. An air bladder 21 is provided on the side of the upper air chamber 19 facing the unwinding piston 5. The end of the air bladder 21 is engaged with a dust cover 15. By sleeved the upper air chamber 19 on the outer periphery of the piston rod 4, the upper air chamber 19 and the piston rod 4 are coaxially arranged, effectively avoiding the influence of the two on each other. The dynamic oscillation caused by eccentricity is mitigated by a buffer block 20 made of elastic material located at the bottom of the upper air chamber 19 on the piston rod 4. When the air spring 1 is compressed to its limit, the buffer block 20 absorbs the impact energy through elastic deformation, preventing a rigid collision between the bottom of the upper air chamber 19 and the piston rod 4, absorbing some high-frequency vibrations, and reducing fatigue wear of the components. The snap-fit ​​structure between the end of the airbag 21 and the dust cover 15 restricts the radial displacement of the end of the airbag 21 and prevents the airbag 21 from excessively contacting the outer periphery of the unwinding piston 5 due to centrifugal force during large torsional angles. Friction ensures the shape stability of the airbag 21 during inflation and pressure bearing. The airbag 21 includes an outer cover 22 and an inner liner 23. The outer cover 22 is disposed on the outer periphery of the inner liner 23. One end of the inner liner 23 is connected to the upper air chamber 19, and the other end of the inner liner 23 is connected to the unwinding piston 5. The unwinding piston 5 and the inner liner 23 are connected by a lower buckling ring 24, and the inner liner 23 is connected to the upper air chamber 19 by an upper buckling ring 25. The outer cover 22 is disposed on the outer periphery of the inner liner 23 to form an outer layer of seal and protection. The inner liner 23 is placed between the upper air chamber 19 and the outer cover. The inner liner 23 is connected to the upper air chamber 19 via a lower retaining ring 24 and an upper retaining ring 25. The rigid connection between the upper retaining ring 25 and the lower retaining ring 24 ensures the connection strength between the airbag 21 and the upper air chamber 19 and the unwinding piston 5, preventing gas leakage. At the same time, the direct connection between the inner liner 23 and the unwinding piston 5 can transmit some torque to the unwinding piston 5 through the lower retaining ring 24, reducing the torsional force on the outer cover 22 and alleviating the durability failure of the outer cover 22 due to excessive deformation.

[0026] The beneficial effects of this utility model are as follows: A bearing 8 is provided between the mounting tray 6 fixed to the outer periphery of the damper tube 3 and the mounting sleeve 7 located at its upper end, so as to realize the relative rotation between the unwinding piston 5 and the damper tube 3. The relative rotation achieved by the connection through the bearing 8 avoids the rigid connection between the unwinding piston 5 and the damper tube 3. The stable rotation support provided by the bearing 8 reduces the relative loosening between the unwinding piston 5 and the damper tube 3, and avoids the risk of abnormal noise caused by the collision of metal parts.

Claims

1. An installation structure for an air spring slide assembly, comprising an air spring and a damper, the damper comprising a damper tube and a piston rod disposed within the damper tube, the end of the piston rod being connected to the air spring, the air spring comprising an unwinding piston disposed on the outer periphery of the damper tube, characterized in that: An installation tray is fixedly installed on the outer periphery of the shock absorber tube. An installation sleeve is installed on the upper end of the installation tray. A bearing is provided between the installation sleeve and the installation tray. The bearing is sleeved on the shock absorber tube. The installation sleeve is placed between the shock absorber tube and the unwinding piston to enable the installation sleeve to press the bearing tightly against the installation tray.

2. The mounting structure of an air spring slide assembly according to claim 1, characterized in that: The bearing includes an inner ring and an outer ring. The inner ring is fitted onto the damper tube with an interference fit, and the outer ring is fitted with the lower end of the unwinding piston with a clearance fit.

3. The mounting structure of an air spring slide assembly according to claim 2, characterized in that: The lower end of the uncoiling piston is provided with an installation groove for the inner ring of the bearing to be embedded. The outer ring of the bearing is placed in the installation groove and is in clearance fit with the installation groove. A sealing element is provided between the uncoiling piston and the top of the installation sleeve. The inner ring of the bearing abuts against the bottom of the installation sleeve to enable the installation sleeve to press tightly against the sealing element.

4. The mounting structure of an air spring slide assembly according to claim 3, characterized in that: The mounting tray includes a support portion that abuts against the inner ring of the bearing. A flange portion is fixedly installed at the bottom of the support portion. A dust cover is fitted around the outer periphery of the unwinding piston. The end of the dust cover is provided with a groove that engages with the flange portion.

5. The mounting structure of an air spring slide assembly according to claim 3, characterized in that: A plurality of rotating balls are provided between the inner ring and the outer ring of the bearing, and the rotating balls are connected by a cage.

6. The mounting structure of an air spring slide assembly according to any one of claims 3-5, characterized in that: The lower end of the unwinding piston is an arc surface, and the mounting groove is placed inside the arc surface.

7. The mounting structure of an air spring slide assembly according to claim 1, characterized in that: The air spring also includes an upper air chamber disposed on the outer periphery of the piston rod. A buffer block is provided at the bottom of the upper air chamber on the piston rod. The buffer block is sleeved on the piston rod. An air bladder is provided on the side of the upper air chamber facing the unwinding piston. The end of the air bladder is engaged with a dust cover.

8. The mounting structure of an air spring slide assembly according to claim 7, characterized in that: The airbag includes an outer cover and an inner liner. The outer cover is disposed on the outer periphery of the inner liner. One end of the inner liner is connected to the upper air chamber, and the other end of the inner liner is connected to the unwinding piston. The unwinding piston and the inner liner are connected by a lower buckle ring, and the inner liner and the upper air chamber are connected by an upper buckle ring.

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