Pre-pressing type emergency air spring assembly

Abstract

The utility model discloses a pre-pressing type emergency air spring assembly which comprises an upper cover plate, an air inlet is formed in one side of the top of the upper cover plate, first push blocks are symmetrically arranged in the middle of the bottom of the upper cover plate, an air bag is connected to the outer side of the bottom of the upper cover plate, a carrying cup is connected to the inner side of the air bag, and a second push block is symmetrically arranged in the middle of the bottom of the upper cover plate. A rigidity buffering assembly is arranged in the carrying cup, an emergency spring is arranged at the bottom of the carrying cup, the bottom of the emergency spring is connected with a lower cover plate, and the connecting and installing functions of the emergency air spring assembly are conveniently achieved. Through the structural design of the first push block and the second push block, oblique sliding friction of the wearing plate can be achieved, then through mutual cooperation of the first buffer spring, the sleeve rod, the connecting plate, the second buffer spring and the containing groove, the rigidity requirement in the transverse direction during air leakage can be improved, and the soft stop requirement can be achieved; the practicability and comfort of the air spring assembly in later use are improved, and the safety during later air leakage is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency air springs, in particular to a pre-compression emergency air spring assembly. Background Art

[0002] Air spring assemblies are widely used, such as railway carriages, heavy-duty vehicles and other applications where cushioning or shock absorption is important. Generally, such spring assemblies include an elastomer located between a pair of rigid end plates. The elastomer is made of rubber and is compressed by the load acting on the spring assembly.

[0003] In the prior art, rubber emergency springs will creep during their service life due to the characteristics of rubber. At the same time, due to the nonlinearity of rubber, the vertical stiffness will increase when the load increases. When the air spring is deflated, most of them will have a hard stop in the vertical direction. At the same time, lateral sliding friction will occur between the cover plate and the wear plate, which cannot meet the lateral stiffness requirements and soft stop requirements of some high-speed vehicle projects in the deflated state. Utility Model Content

[0004] The utility model aims to provide a pre-compression emergency air spring assembly, which cannot meet the height requirements and soft stop requirements in the lateral direction of some high-speed vehicle projects in a deflated state.

[0005] To achieve the above-mentioned purpose, a pre-stressed emergency air spring assembly is provided, comprising an upper cover plate, an air inlet is provided on one side of the top of the upper cover plate, a push block is symmetrically provided at the middle position of the bottom of the upper cover plate, an air bag is connected to the outer side of the bottom of the upper cover plate, a load cup is connected to the inner side of the air bag, a stiffness buffer assembly is provided inside the load cup, an emergency spring is provided at the bottom of the load cup, and the bottom of the emergency spring is connected to a lower cover plate, so as to facilitate the connection and installation function of the emergency air spring assembly.

[0006] According to the preloaded emergency air spring assembly, the stiffness buffer assembly includes a buffer spring 1, a sleeve rod, a connecting plate, a buffer spring 2, a receiving groove, a push block 2 and a wear plate, and the receiving grooves are provided with two groups, and the two groups of receiving grooves are opened on both sides of the inside of the carrier cup, and the two groups of receiving grooves are provided with sleeve rods extending into the inside of the carrier cup on the sides close to each other;

[0007] A buffer spring 1 connected to the sleeve rod is provided on the side away from the inside of the two groups of storage grooves, a connecting plate extending to the inside of the airbag is provided on the side close to the two groups of sleeve rods, a buffer spring 2 is provided on the side close to the two groups of connecting plates, a push block 2 matched with the push block 1 is provided on the top of the side away from the two groups of connecting plates, and a wear plate is provided on the top of the two groups of push blocks 2 and the side close to the bottom of the two groups of push blocks 1, so as to improve the stiffness requirements and soft stop requirements in the lateral direction inside the air spring assembly.

[0008] According to the pre-stressed emergency air spring assembly, the sides of the two groups of push blocks 2 that are away from the tops and the sides of the two groups of push blocks 1 that are close to the bottoms are both provided with guide slopes connected to the wear plate, and the two groups of guide slopes cooperate with each other to facilitate the push block 1 to push the push block 2 to move closer through the guide slopes in the later stage.

[0009] According to the pre-stressed emergency air spring assembly, a pre-stressed cavity cooperating with the load cup is provided on the top of the lower cover plate, and the pre-stressed cavity cooperates with the emergency spring to facilitate the installation of the emergency spring.

[0010] According to the preloaded emergency air spring assembly, the exteriors of the buffer spring 1 and the buffer spring 2 are sprayed with an anti-rust coating to prevent rust from affecting the subsequent use effect.

[0011] The above scheme has the beneficial effect: through the structural design of push block one and push block two, the oblique sliding friction of the wear plate can be achieved, and then through the mutual cooperation of buffer spring one, sleeve rod, connecting plate, buffer spring two and storage groove, the lateral stiffness requirement during deflation can be improved, and the soft stop requirement can also be achieved, thereby improving the practicality and comfort of the air spring assembly in the later use and ensuring safety during later deflation.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a three-dimensional structural diagram of a pre-compression emergency air spring assembly connecting plate of the utility model;

[0015] Figure 2 It is a three-dimensional structural diagram of a push block 1 of a pre-compression emergency air spring assembly of the utility model;

[0016] Figure 3 This is a front sectional view of a pre-compression emergency air spring assembly of the utility model;

[0017] Figure 4 It is a front sectional view of a carrier cup of a pre-compression emergency air spring assembly according to the utility model.

[0018] Legend:

[0019] 1. Upper cover; 2. Push block 1; 3. Air inlet; 4. Airbag; 5. Carrying cup; 6. Lower cover; 7. Emergency spring; 8. Buffer spring 1; 9. Sleeve rod; 10. Connecting plate; 11. Buffer spring 2; 12. Storage groove; 13. Push block 2; 14. Wear plate. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-4 The utility model embodiment is a pre-stressed emergency air spring assembly, which includes an upper cover plate 1, an air inlet 3 is provided on one side of the top of the upper cover plate 1, a push block 2 is symmetrically provided at the middle position of the bottom of the upper cover plate 1, an air bag 4 is connected to the outer side of the bottom of the upper cover plate 1, and a carrier cup 5 is connected to the inner side of the air bag 4. A stiffness buffer component is provided inside the carrier cup 5, an emergency spring 7 is provided at the bottom of the carrier cup 5, and the bottom of the emergency spring 7 is connected to the lower cover plate 6.

[0022] Reference Figure 1-4 The stiffness buffer assembly includes a buffer spring 1 8, a sleeve rod 9, a connecting plate 10, a buffer spring 2 11, a receiving groove 12, a push block 2 13 and a wear plate 14. The receiving grooves 12 are provided with two groups, and the two groups of receiving grooves 12 are opened on both sides of the inside of the carrier cup 5. The sleeve rod 9 extending to the inside of the carrier cup 5 is provided on the side close to the inside of the two groups of receiving grooves 12;

[0023] A buffer spring 8 connected to the sleeve rod 9 is provided on the side away from the two sets of storage grooves 12, a connecting plate 10 extending to the inside of the airbag 4 is provided on the side close to the two sets of sleeve rods 9, a buffer spring 2 11 is provided on the side close to the two sets of connecting plates 10, a push block 2 13 matched with the push block 2 is provided on the top of the side away from the two sets of connecting plates 10, and a wear plate 14 is provided on the top of the two sets of push blocks 2 13 and the side close to the bottom of the two sets of push blocks 2.

[0024] The sides of the two groups of push blocks 13 that are away from the top and the sides of the two groups of push blocks 1 that are close to the bottom are both provided with guiding inclined surfaces connected to the wear plate 14, and the two groups of guiding inclined surfaces cooperate with each other.

[0025] A pre-compression cavity cooperating with the carrier cup 5 is provided on the top of the lower cover plate 6 , and the pre-compression cavity cooperates with the emergency spring 7 .

[0026] The exteriors of the buffer spring 1 8 and the buffer spring 2 11 are sprayed with an anti-rust coating.

[0027] Working principle: During operation, the upper cover plate 1 can be moved downward by the leakage of the gas inside the airbag 4 to realize the compression operation of the emergency spring 7. At the same time, the upper cover plate 1 can also drive the push block 1 2 to move downward. At this time, the two sets of wear plates 14 can be realized by the guide inclined surface design of the push block 1 2 and the push block 2 13 and the close working to each other, and the push block 2 13 can also be pushed to drive the connecting plate 10 to approach each other inside the carrier cup 5 to realize the compression operation of the buffer spring 2 11;

[0028] At this time, the auxiliary buffering operation can be realized through the elastic buffering force of the buffer spring 11. At the same time, through the structural design of the component, the stiffness and soft stop requirements of the lateral movement of the spring assembly can also be improved. Finally, the movement of the connecting plate 10 can also drive the sleeve rod 9 to move inside the storage groove 12 to realize the stretching of the buffer spring 8. At this time, the elastic buffering force of the buffer spring 8 can again realize the auxiliary buffering function of the spring assembly in the later stage, which prompts its practicality and comfort of use and ensures the requirements for later use.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pre-stressed emergency air spring assembly, comprising an upper cover plate (1), characterized in that: An air inlet (3) is provided on one side of the top of the upper cover plate (1), a push block (2) is symmetrically provided at the middle position of the bottom of the upper cover plate (1), an air bag (4) is connected to the outer side of the bottom of the upper cover plate (1), a carrier cup (5) is connected to the inner side of the air bag (4), a rigidity buffer component is provided inside the carrier cup (5), an emergency spring (7) is provided at the bottom of the carrier cup (5), and the bottom of the emergency spring (7) is connected to the lower cover plate (6).

2. A preloaded emergency air spring assembly according to claim 1, characterized in that: The stiffness buffer assembly comprises a buffer spring (8), a sleeve rod (9), a connecting plate (10), a buffer spring (11), a receiving groove (12), a push block (13) and a wear plate (14); the receiving groove (12) is provided with two groups, the two groups of receiving grooves (12) are opened on two sides inside the carrier cup (5), and the two groups of receiving grooves (12) are provided with sleeve rods (9) extending into the inside of the carrier cup (5) on the adjacent sides inside. A buffer spring (8) connected to the sleeve rod (9) is provided on the side away from the inside of the two groups of the receiving grooves (12); a connecting plate (10) extending into the inside of the airbag (4) is provided on the side close to the two groups of the sleeve rods (9); a buffer spring (11) is provided on the side close to the two groups of the connecting plates (10); a push block (13) matching with the push block (2) is provided on the top of the side away from the two groups of the connecting plates (10); and a wear plate (14) is provided on the side close to the bottom of the two groups of the push blocks (2) and the top of the two groups of the push blocks (13).

3. A pre-compressed emergency air spring assembly according to claim 2, characterized in that: The sides of the two groups of push blocks 2 (13) that are away from the top and the sides of the two groups of push blocks 1 (2) that are close to the bottom are both provided with guiding inclined surfaces connected to the wear plate (14), and the two groups of guiding inclined surfaces cooperate with each other.

4. A preloaded emergency air spring assembly according to claim 1, characterized in that: The top of the lower cover plate (6) is provided with a pre-compression chamber that cooperates with the carrier cup (5), and the pre-compression chamber cooperates with the emergency spring (7).

5. The preloaded emergency air spring assembly according to claim 2, characterized in that: The exteriors of the buffer spring 1 (8) and the buffer spring 2 (11) are both sprayed with an anti-rust coating.

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