Air spring limiting device

Abstract

The air spring limiting device disclosed by the application is used for limiting the compression limit and the stretching limit of the air spring by limiting the distance between the swing bolster and the air spring support beam, and comprises a limiting connecting rope, an upper limiting block assembly and a lower limiting block assembly. The limiting connecting rope comprises a steel wire rope, a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are respectively arranged at two ends of the steel wire rope, and the first connecting piece is used for being connected with a swing bolster mounting portion of the swing bolster. The upper limiting block assembly is sleeved on the steel wire rope, and the air spring support beam has a support beam limiting portion for supporting the upper limiting block assembly. The lower limiting block assembly is sleeved on the steel wire rope and is limited by the second connecting piece, and the lower limiting block assembly is located on the side of the support beam limiting portion which is opposite to the swing bolster mounting portion. The air spring limiting device provided by the application has strong displacement adaptability to the air spring, simple structure and installation, and is convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of magnetic levitation vehicle technology, and more specifically, to a spring-loaded limiting device. Background Technology

[0002] An air spring, also known as an air spring, is a non-metallic elastic element that operates by filling a retractable, sealed container with compressed air and utilizing the elastic properties of air. It can be used to dampen vibrations and impacts. Air springs are widely used in the suspension systems of transportation vehicles to achieve functions such as cushioning, shock absorption, and vibration isolation.

[0003] In maglev trains, air springs are used as secondary suspensions installed between the train's cars and bogies. They serve as vibration isolation devices between the cars and the running gear, providing decoupling between them and transmitting vertical and lateral forces. Due to the need to transmit lateral forces, the lateral stability of the air springs in the maglev train suspension is a significant issue. The suspension frame, including electromagnet modules, suspension frames, bolsters, and various suspension components, is used to achieve the functions of maglev train levitation, guidance, braking, and traction. The bolster is the connecting device between the car body and the suspension frame, a component of the secondary suspension, providing an installation interface for the air springs. It connects to the upper part of the air springs and rises as the air springs rise and falls as they fall. The air spring support beam is installed on the suspension frame crossbeam, and the lower part of the air spring is installed on the air spring support beam.

[0004] Combination Figure 1 and Figure 2 Although conventional high-speed maglev vehicles use air springs 300 as the main suspension component of the secondary suspension, just like traditional rail vehicles, and are set between the bolster 100 and the air spring support beam 200, their special arrangement makes the installation space for the air spring limiting device insufficient. In existing conventional high-speed maglev vehicles, the upper and lower limit stops of the air spring are constrained by threaded rods 103 and fixed nuts 101 set on the bolster 100, and cotter pins 102 are used to constrain the air spring. This limiting device is difficult to disassemble and assemble, has insufficient adaptability to the displacement of the air spring, and the threaded rods 103 are prone to radial deformation under stress.

[0005] Therefore, how to limit the compression and tension limits of air springs and reduce the deformation of limiting devices has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the object of the present invention is to provide an air spring limiting device to limit the compression limit and tension limit of the air spring and reduce the deformation of the limiting device.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An air spring limiting device is used to limit the compression limit and extension limit of the air spring by limiting the distance between the bolster and the air spring support beam, comprising:

[0009] The limiting connecting rope includes a steel wire rope, a first connector and a second connector, the first connector and the second connector are respectively disposed at both ends of the steel wire rope, and the first connector is used to connect to the rocker mounting part of the rocker bolster;

[0010] An upper limit stop assembly is sleeved on the steel wire rope. The air spring support beam has a support beam limiting part that supports the upper limit stop assembly. There is a first limiting gap between the upper limit stop assembly and the rocker arm mounting part that limits the compression limit of the air spring.

[0011] The lower limit stop assembly is sleeved on the wire rope and is limited by the second connector. The lower limit stop assembly is located on the side of the support beam limiting part opposite to the bolster mounting part, and there is a second limiting gap between the lower limit stop assembly and the support beam limiting part to limit the tensile limit of the air spring.

[0012] Preferably, in the above-described air spring limiting device, the first connecting member includes a first threaded connection portion for connecting with the rocker arm and a first crimping portion for connecting with the wire rope;

[0013] The second connector includes a second threaded connection portion and a second crimping portion for connecting with the wire rope. The end of the second threaded connection portion is fixed with a limiting support portion for supporting the lower limit stop assembly.

[0014] Preferably, in the above-mentioned air spring limiting device, the first connecting member further includes a first profile mating part for cooperating with the tool to rotate the first threaded connecting part;

[0015] The second connector also includes a second profile mating part for cooperating with the tool to rotate the second threaded connection part.

[0016] Preferably, in the above-mentioned air spring limiting device, both the first surface mating part and the second surface mating part are external hexagonal structures.

[0017] Preferably, in the above-mentioned air spring limiting device, the limiting support part is a fastener that is threadedly engaged with the second threaded connection part.

[0018] Preferably, in the above-described air spring limiting device, the upper limit stop assembly includes:

[0019] An upper limit stop is provided, and the wire rope is threaded through the upper limit stop.

[0020] An assembly pad is disposed between the upper limit stop and the supporting beam limiting part. The assembly pad has a pad hole for the steel wire rope to pass through, and the assembly pad has a rope embedding channel communicating with the pad hole to embed the steel wire rope.

[0021] Preferably, in the above-mentioned air spring limiting device, the assembly pad includes:

[0022] The first mounting pad has a first pad half-hole and a first snap-fit ​​part;

[0023] The second mounting pad has a second pad half-hole and a second snap-fit ​​portion, wherein the first snap-fit ​​portion snaps into the second snap-fit ​​portion so that the first pad half-hole and the second pad half-hole form the pad through hole.

[0024] Preferably, in the above-mentioned air spring limiting device, the first locking part includes a first locking groove and a first locking protrusion located on both sides of the first pad half hole;

[0025] The second locking part includes a second locking groove and a second locking protrusion located on both sides of the half hole of the second pad. The first locking protrusion engages with the second locking groove, and the second locking protrusion engages with the first locking groove, so as to restrict the first mounting pad and the second mounting pad from moving away from each other.

[0026] Preferably, in the above-described air spring limiting device, the lower limit stop assembly includes:

[0027] The lower limit stop is through which the wire rope is threaded.

[0028] The lower stop plate is located at the end of the lower limit stop away from the upper limit stop assembly and is limited by the second connector.

[0029] Preferably, in the above-mentioned air spring limiting device, the upper limit stop block assembly further includes a wear-resistant stop block disposed at one end of the upper limit stop near the bolster mounting portion and an adhesive stop block disposed between the upper limit stop and the assembly pad block.

[0030] The air spring limiting device provided by this invention is used to limit the compression and tension limits of the air spring by limiting the distance between the bolster and the air spring support beam. The air spring limiting device includes a limiting connecting rope, an upper limiting block assembly, and a lower limiting block assembly. The limiting connecting rope includes a steel wire rope, a first connecting member, and a second connecting member, which are respectively disposed at both ends of the steel wire rope. The first connecting member is used to connect to the bolster mounting part of the bolster, and the steel wire rope provides a certain buffering effect on the displacement movement between the bolster and the air spring support beam. The upper limiting block assembly is sleeved on the steel wire rope, and the air spring support beam has a support beam limiting part that supports the upper limiting block assembly. A first limiting gap restricting the compression limit of the air spring is formed between the upper limiting block assembly and the bolster mounting part. The lower limiting block assembly is sleeved on the steel wire rope and is limited by the second connecting member. The lower limiting block assembly is located on the side of the support beam limiting part opposite to the bolster mounting part, and a second limiting gap restricting the tension limit of the air spring is formed between the lower limiting block assembly and the support beam limiting part.

[0031] When the air spring is in a failure condition or subjected to excessive load, it is compressed until the support beam limiter abuts against the upper limit stop assembly, limiting the compression limit of the air spring. When the air spring is overcharged or the suspension frame is in a lifting condition, it is stretched until the lower limit stop assembly abuts against the support beam limiter, limiting the stretching limit of the air spring. Compared to the existing technology that uses a threaded rod and cotter pin to constrain the upper and lower limit stops of the air spring, the steel wire rope of the air spring limiting device provided by this invention is a flexible component, which can adapt to the positional deviation of the bolster and the air spring support beam along the radial direction of the steel wire rope, and has strong adaptability to the displacement of the air spring. The structure is simple to install and easy to maintain. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a hollow spring limiting device in the prior art;

[0034] Figure 2 for Figure 1 Enlarged view at point K;

[0035] Figure 3 This is a schematic diagram of the air spring limiting device provided in an embodiment of the present invention;

[0036] Figure 4 for Figure 3 Enlarged view of point A;

[0037] Figure 5 An isometric view of the exploded structure of the air spring limiting device provided in an embodiment of the present invention;

[0038] Figure 6 This is a front view of the exploded structure of the air spring limiting device provided in an embodiment of the present invention;

[0039] Figure 7 This is a structural diagram of the second mounting pad provided in an embodiment of the present invention.

[0040] Among them, 100 is the bolster, 101 is the fixing nut, 102 is the cotter pin, 103 is the threaded rod, 104 is the bolster mounting part, 200 is the air spring support beam, and 201 is the support beam limiting part;

[0041] 300 is an air spring, 301 is an upper washer, 310 is a limiting connecting rope, 311 is a first threaded connector, 312 is a first profile mating part, 313 is a first crimping part, 314 is a second threaded connector, 315 is a second profile mating part, 316 is a second crimping part, 317 is a wire rope, 320 is an upper limit stop assembly, 321 is a wear-resistant stop, 322 is an upper limit stop, 323 is an adhesive stop, 324 is a first mounting pad, 325 is a second mounting pad, 330 is a lower limit stop assembly, 331 is a lower limit stop, 332 is a lower stop support plate, 333 is a fastening washer, and 334 is a fastener. Detailed Implementation

[0042] The core of this invention is to disclose an air spring limiting device to limit the compression limit and extension limit of the air spring and reduce the deformation of the limiting device.

[0043] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the configurations represented in the embodiments below are not limited to those necessary for the solution of the invention described in the claims.

[0044] Combination Figures 3-5 The air spring limiting device disclosed in this embodiment of the invention is used to limit the compression limit and tension limit of the air spring 300 by limiting the distance between the rocker arm 100 and the air spring support beam 200. The air spring limiting device includes a limiting connecting rope 310, an upper limit stop assembly 320 and a lower limit stop assembly 330.

[0045] The limiting connecting rope 310 includes a steel wire rope 317, a first connector and a second connector. The first connector and the second connector are respectively disposed at both ends of the steel wire rope 317. The first connector is used to connect with the rocker mounting part 104 of the rocker 100. The steel wire rope 317 has a certain buffering effect on the displacement movement between the rocker 100 and the air spring support beam 200.

[0046] The upper limit stop assembly 320 is sleeved on the wire rope 317. The air spring support beam 200 has a support beam limiting part 201 that supports the upper limit stop assembly 320. There is a first limiting gap between the upper limit stop assembly 320 and the bolster mounting part 104 to limit the compression limit of the air spring 300. When the air spring 300 is in a failure condition or is subjected to excessive load, the air spring 300 is compressed until the support beam limiting part 201 abuts against the upper limit stop assembly 320, thus limiting the compression limit of the air spring 300.

[0047] The lower limit stop assembly 330 is sleeved on the wire rope 317 and is limited by the second connector. The lower limit stop assembly 330 is located on the side of the support beam limiting part 201 opposite to the bolster mounting part 104, and there is a second limiting gap between it and the support beam limiting part 201 to limit the tensile limit of the air spring 300. When the air spring 300 is overcharged or the suspension frame is in the lifting condition, the air spring 300 is stretched until the lower limit stop assembly 330 abuts against the support beam limiting part 201, limiting the tensile limit of the air spring 300.

[0048] It should be noted that operators can control the size of the first and second limit gaps and the extension limit position of the air spring 300 by controlling the length of the wire rope 317, the thickness of the upper limit stop assembly 320 and the lower limit stop assembly 330, according to actual needs.

[0049] The air spring limiting device disclosed in this embodiment of the invention can prevent the excessive increase in height of the maglev vehicle by tightening the limiting connecting rope 310 when the air spring 300 is overcharged. It can also support the weight of the maglev vehicle under abnormal loads or when the air spring 300 is de-inflated.

[0050] Compared to existing technologies that use threaded rods and cotter pins to constrain the upper and lower limit stops of the air spring, the steel wire rope of the air spring limiting device disclosed in this embodiment of the invention is a flexible component that can adapt to the positional deviation of the bolster and the air spring support beam along the radial direction of the steel wire rope. It also has strong adaptability to the displacement of the air spring, simple structure and installation, and is easy to maintain.

[0051] The rocker 100 has a fixing hole for fixing the air spring limiting device. A fixing nut 101 is provided in the fixing hole. The first connector is used to thread into the fixing nut 101. In order to realize the fixing function of the first connector, the first connector includes a first threaded connection part 311 for connecting with the rocker 100 and a first crimping part 313 for connecting with the wire rope 317.

[0052] The second connector includes a second threaded connection portion 316 and a second crimping portion 314 for connecting with the wire rope 317. The end of the second threaded connection portion 316 is fixed with a limiting support portion for supporting the lower limit stop assembly 330. The limiting support portion supports the lower limit stop assembly 330 and cooperates with the lower limit stop assembly 330 to limit the tensile limit of the air spring 300.

[0053] To facilitate the connection between the first connector and the rocker mounting portion 104 of the rocker 100, the first connector further includes a first profile mating portion 312 for engaging with a tool to rotate the first threaded connection portion 311. By rotating the first profile mating portion 312, the first connector can be threadedly engaged with the fixing nut 101 provided on the rocker 100. The second connector further includes a second profile mating portion 315 for engaging with a tool to rotate the second threaded connection portion 316. By rotating the second profile mating portion 315, the second connector is tightened with the limiting support portion.

[0054] Both the first surface mating part 312 and the second surface mating part 315 can be hexagonal structures. Those skilled in the art will understand that as long as the outer surface of the first surface mating part 312 and the second surface mating part 315 is not a circular cross-section, they can be rotated by the disassembly and assembly tools. The hexagonal structure is only a commonly used surface structure form, but not the only one.

[0055] In a specific embodiment of the present invention, the limiting support is a fastener 334 that is threadedly engaged with the second threaded connection 316. The fastener 334 may be a nut for threaded connection with the second connector. The limiting support is used to block the lower limiting block assembly 330 to prevent the lower limiting block assembly 330 from disengaging downwards along the axial direction of the wire rope 317. It also allows the lower limiting block assembly 330 to limit the air spring 300 along with the limiting connecting rope 310.

[0056] Combination Figure 6 To limit the compression limit of the air spring 300, the upper limit stop assembly 320 includes an upper limit stop 322 and an assembly pad. A steel wire rope 317 is threaded through the upper limit stop 322, which is used to limit the first limiting gap of the compression limit of the air spring 300.

[0057] Because the limiting connecting rope 310 is equipped with a flexible steel wire rope 317, it is impossible to lock one end of the first connecting member by applying torque to one end of the second connecting member during installation. Therefore, sufficient torque tightening space is obtained for the installation of the first connecting member by reducing the size of the upper limit stop 322 and adding an assembly pad. Specifically, the assembly pad is disposed between the upper limit stop 322 and the beam limiting part 201. The assembly pad has a pad hole for the steel wire rope 317 to pass through, and the assembly pad has a rope embedding channel communicating with the pad hole to embed the steel wire rope 317.

[0058] When fixing the first connector of the limiting connecting rope 310 to the rocker 100, the end of the limiting connecting rope 310 with the first connector can be passed through the beam limiting part 201 (the beam limiting part 201 has a beam through hole for the steel wire rope 317 to pass through) and the upper limit stop assembly 320 in sequence. At this time, the assembly pad is not installed first, so as to reserve more rotation space for the first surface mating part 312. The first surface mating part 312 is rotated to tighten with the fixing nut 101. Finally, the assembly pad is installed between the upper limit stop 322 and the beam limiting part 201, and the steel wire rope 317 is embedded into the pad through hole from the rope embedding channel, so that there is a first limiting gap between the upper limit stop assembly 320 and the rocker mounting part 104 to limit the compression limit of the air spring 300. Furthermore, the assembly pad is installed last, which provides a larger installation space for the fastening of the first connector. During disassembly and assembly, the assembly pad can be removed first, and then the limit connecting rope 310 can be disassembled and assembled.

[0059] Those skilled in the art will understand that the rope-embedding channel of the assembly pad can be a channel that is directly connected to the through hole of the pad, as long as the wire rope 317 can pass through the through hole of the pad from the outer surface of the assembly pad.

[0060] Combination Figure 7 In a specific embodiment of the present invention, the assembly pad includes a first mounting sub-pad 324 and a second mounting sub-pad 325. The first mounting sub-pad 324 has a first pad half-hole and a first snap-fit ​​portion, and the second mounting sub-pad 325 has a second pad half-hole and a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion snap together, so that the first pad half-hole and the second pad half-hole form a pad through hole. When the first mounting sub-pad 324 and the second mounting sub-pad 325 are snapped together, a first limiting gap is provided between the upper limit stop 322 and the support beam limiting portion 201, which together with the upper limit stop 322 limits the compression limit of the air spring 300. When the first mounting sub-pad 324 and the second mounting sub-pad 325 are separated, the gap between the first mounting sub-pad 324 and the second mounting sub-pad 325 is a rope embedding channel, so that the wire rope 317 can be embedded between the first mounting sub-pad 324 and the second mounting sub-pad 325.

[0061] To achieve the engagement between the first mounting pad 324 and the second mounting pad 325, the first engagement portion includes a first engagement groove and a first engagement protrusion located on both sides of the half-hole of the first pad, and the second engagement portion includes a second engagement groove and a second engagement protrusion located on both sides of the half-hole of the second pad. The first engagement protrusion engages with the second engagement groove, and the second engagement protrusion engages with the first engagement groove, thereby restricting the first mounting pad 324 and the second mounting pad 325 from moving away from each other.

[0062] Specifically, the first mounting pad 324 and the second mounting pad 325 can be elastically snapped together. That is, when the first mounting pad 324 and the second mounting pad 325 are close to each other, the snap-fit ​​protrusions (the first snap-fit ​​protrusion and the second snap-fit ​​protrusion) deform themselves when they are embedded in the snap-fit ​​grooves (the first snap-fit ​​groove and the second snap-fit ​​groove) so that they can pass through the narrow opening of the snap-fit ​​groove. After being fully inserted into the snap-fit ​​groove, they restore their shape to form a snap-fit ​​structure.

[0063] The first mounting pad 324 and the second mounting pad 325 can also be inserted for installation. That is, the first mounting pad 324 moves axially from above or below the second mounting pad 325 towards the second mounting pad 325, so that the snap-fit ​​protrusions (the first snap-fit ​​protrusion and the second snap-fit ​​protrusion) are gradually inserted into the snap-fit ​​grooves (the first snap-fit ​​groove and the second snap-fit ​​groove) from the end face. Installation can be completed without deforming the snap-fit ​​protrusions, thus forming a snap-fit ​​structure.

[0064] In a specific embodiment of the present invention, the lower limit stop assembly 330 includes a lower limit stop 331 and a lower stop support plate 332. A steel wire rope 317 passes through the lower limit stop 331. The lower stop support plate 332 is disposed at the end of the lower limit stop 331 away from the upper limit stop assembly 320 and is limited by the second connecting member.

[0065] The upper limit stop assembly 320 also includes a wear-resistant stop 321 disposed at one end of the upper limit stop 322 near the bolster mounting portion 104, and an adhesive stop 323 disposed between the upper limit stop 322 and the assembly pad. The wear-resistant stop 321 can be made of rubber with strong wear resistance, the upper limit stop 322 can be made of rubber with strong cushioning performance, and the adhesive stop 323 can be made of aluminum for bonding with the support beam limiting portion 201.

[0066] During installation, the air spring limiting device disclosed in this embodiment of the invention first installs the fixing nut 101 into the fixing hole of the rocker 100. The upper limit stop 322 is set between the support beam limiting part 201 and the rocker mounting part 104. The lower limit stop 331 and the lower stop plate 332 are set in the limiting stop mounting hole of the air spring support beam 200. After the second connecting member of the limiting connecting rope 310 is fastened to the fastener 334, the end of the limiting connecting rope 310 with the first connecting member is passed through the lower stop plate 332, the lower limit stop 331 and the upper limit stop 322 in sequence. The first connecting member is locked to the fixing nut 101 by using the space between the rocker mounting part 104 and the upper limit stop 322. Finally, the assembly pad is installed between the upper limit stop 322 and the support beam limiting part 201.

[0067] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed.

[0068] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A spring seat limiting device for limiting the compression limit and the extension limit of an air spring by limiting the distance between a spring seat and a spring bolster, characterized by, The application relates to a limiting connecting rope, which comprises a steel wire rope, a first connecting piece and a second connecting piece. The first connecting piece is arranged at one end of the steel wire rope and is used for connecting with a seat mounting part of a seat. The second connecting piece is arranged at the other end of the steel wire rope and is used for connecting with the second limiting block assembly. The first connecting piece comprises a first threaded connecting part used for connecting with the seat and a first pressure connecting part used for connecting with the steel wire rope. The second connecting piece comprises a second threaded connecting part and a second pressure connecting part used for connecting with the steel wire rope. The end of the second threaded connecting part is fixed with a limiting support part used for supporting the second limiting block assembly.

2. The spring limiter of claim 1, wherein The first type surface matching part and the second type surface matching part are both hexagonal structures. The limiting support part is a fastener matched with the second threaded connecting part in a threaded mode.

3. The spring limiter of claim 2, wherein the spring limiter is configured to be mounted to the spring plate by a plurality of fasteners. The first installation split pad and the second installation split pad are elastically matched and installed. When the first installation split pad and the second installation split pad are close to each other, the first clamping protrusion and the second clamping protrusion are deformed when being embedded into the second clamping groove and the first clamping groove.

4. The spring limiter of claim 3, wherein the spring limiter is configured to be mounted to the spring plate by a plurality of fasteners. After the first clamping protrusion and the second clamping protrusion completely enter the second clamping groove and the first clamping groove, the first clamping protrusion and the second clamping protrusion restore the shapes to form the clamping structure.

5. The spring limiter of claim 2, wherein the spring limiter is configured to be mounted to a spring anchor of the air spring. ​ 6. The spring limiter of claim 1, wherein ​ 7. The spring limiter of claim 1, wherein the spring limiter is configured to be mounted to a spring seat of the air spring. The first installation sub-pad and the second installation sub-pad are inserted and installed, the first installation sub-pad is moved in the direction of approaching the second installation sub-pad from above or below of the second installation sub-pad in the axial direction, so that the first clamping protrusion and the second clamping protrusion are gradually inserted into the second clamping groove and the first clamping groove from the end face, and a clamping structure is formed.

8. The spring limiter of claim 1, wherein the spring limiter is configured to be mounted to a spring seat of the air spring. The lower limit stop block assembly comprises: A lower limit stop block, through which the steel wire rope passes; A lower stop block supporting plate arranged at one end of the lower limit stop block away from the upper limit stop block assembly and limited by the second connecting piece.

9. The spring limiter of claim 1, wherein the spring limiter is configured to be mounted to a spring seat of the air spring. The upper limit stop block assembly further comprises a wear-resistant block arranged at one end of the upper limit stop block close to the rocker mounting portion and a bonding block arranged between the upper limit stop block and the assembled pad.

10. The spring limiter of claim 9, wherein the spring limiter is configured to be mounted to a spring anchor of the air spring. The wear-resistant block is made of rubber material with strong wear resistance, the upper limit stop block is made of rubber material with strong buffering performance, and the bonding block is made of aluminum material.

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