An adaptive initial force coupler buffer device

Abstract

This invention discloses an adaptive initial force coupler buffer device, comprising a base for connection to the vehicle body and a buffer assembly for buffering and load transfer. A linear elastic element is disposed between the base and the buffer assembly, which can adjust the initial force of the coupler buffer device by providing a linear force. One end of the linear elastic element is connected to the buffer assembly, and the other end is connected to the base. This invention can maintain the overall initial force of the coupler within a certain range, avoiding large fluctuations and improving the comfort of the coupler buffer device.

Description

Technical Field

[0001] This invention relates to the field of vehicle traction technology, and more specifically to a coupler buffer device for rail transit vehicles. Background Technology

[0002] Couplers are one of the important components of rail transit vehicles, connecting the cars together. To prevent hard collisions between cars during acceleration or deceleration, rail transit vehicles are also equipped with coupler buffer devices. Coupler buffers are vehicle components that connect the cars to each other, transmitting traction and braking forces and mitigating impact forces.

[0003] The initial force of a coupler buffer refers to the pre-installation force generated by the compression of the elastomer after the coupler buffer is installed. In practice, the initial force of the coupler buffer is affected by external conditions such as elastomer creep and temperature. If the initial force of the coupler buffer fluctuates significantly, it will affect wheel comfort and running stability.

[0004] Traditional couplers use tandem elastomers for preloading to provide initial force. This method leads to the following problems: because the elastomers are non-metallic materials, creep occurs after preloading, causing a decrease in initial force; during operation, high and low temperatures affect the couplers, causing the material to soften at high temperatures, resulting in a decrease in initial force, while the material to harden at low temperatures, resulting in an increase in initial force. Therefore, the initial force of traditional couplers fluctuates significantly due to external environmental influences and cannot be maintained within a certain range. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an adaptive initial force coupler buffer device that can keep the initial force of the coupler as a whole within a certain range and avoid its large-scale fluctuation.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows:

[0007] An adaptive initial force coupler buffer device includes a base for connecting to a vehicle body and a buffer assembly for buffering and transmitting loads. A linear elastic element is provided between the base and the buffer assembly, which can adjust the initial force of the coupler buffer device by providing a linear force. One end of the linear elastic element is connected to the buffer assembly, and the other end of the linear elastic element is connected to the base.

[0008] Preferably, in the above-mentioned adaptive initial force coupler buffer device, a limiting component for limiting the displacement range of the linear elastic element is further provided between the base and the buffer assembly.

[0009] Preferably, in the aforementioned adaptive initial force coupler buffer device, the limiting component includes a support base and a base plate. The support base is connected to the base, and the base plate is connected to the buffer component. The support base and the base plate are connected in a relatively movable manner. The limiting component also includes a limiting part for limiting the relative movement range between the support base and the base plate.

[0010] Preferably, in the above-mentioned adaptive initial force coupler buffer device, the limiting part includes a first boss, a second boss and a third boss. The first boss and the third boss are spaced apart on the support base. A groove is provided between the first boss and the third boss for the second boss to move. The second boss is disposed on the base plate and can move on the groove between the first boss and the third boss.

[0011] In the aforementioned adaptive initial force coupler buffer device, preferably, the gap between the first boss and the second boss is C, the gap between the second boss and the third boss is B, and the gap between the base plate and the third boss is A, where gap A ≥ C.

[0012] Preferably, in the above-mentioned adaptive initial force coupler buffer device, the support base includes a bottom seat and side protective walls, the side protective walls enclosing a cavity, and the linear elastic element is disposed in the cavity inside the support base.

[0013] Preferably, in the aforementioned adaptive initial force coupler buffer device, the first boss and the third boss are disposed on the outer side of the side guard wall, the bottom plate is provided with a bent portion extending toward the support seat, and the second boss is disposed on the inner side of the bent portion.

[0014] Preferably, in the above-mentioned adaptive initial force coupler buffer device, the buffer assembly includes a buffer plate, one side of which is provided with a cylindrical wall, the cylindrical wall enclosing a cavity, and a plurality of elastic bodies are provided in the cavity, with partitions provided between adjacent elastic bodies.

[0015] Preferably, in the above-mentioned adaptive initial force coupler buffer device, the chamber is provided with an intermediate rod, and the elastic body is arranged around the intermediate rod.

[0016] In the aforementioned adaptive initial force coupler buffer device, preferably, the linear elastic element is a spring or a shock absorber.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] 1. The adaptive initial force coupler buffer device of the present invention has a base for connecting to the vehicle body, and a buffer assembly that can dock with another buffer to buffer and transfer loads. A linear elastic element is set between the base and the buffer assembly. The linear force of the linear elastic element is used to control the initial force to be kept within a certain range, reducing the influence of elastomer creep, high and low temperatures, etc. on the initial force. The initial force will not fluctuate in a large range, so as to achieve the effect of adaptive adjustment of the initial force of the coupler within a certain range, thereby improving the comfort of the coupler buffer device. With the coupler buffer device of the present invention, since the initial force change is minimal, the vehicle load during starting or braking is close to the design load, which can ensure the comfort of the vehicle body during starting and braking.

[0019] 2. The adaptive initial force coupler buffer device of the present invention can effectively adjust the displacement range of the linear elastic element by setting a limiting component with concave and convex structure on the support and base. Through this structure, the initial force of the coupler as a whole is kept within a certain range, while ensuring that the product is not entirely borne by the linear elastic element in the early stage due to the presence of the linear elastic element during the pressure process of the coupler. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the adaptive initial force coupler buffer device of the embodiment.

[0021] Figure 2 yes Figure 1 A magnified view of part I.

[0022] Figure 3 This is a schematic diagram of the adaptive initial force coupler buffer device in the embodiment when the initial force rises.

[0023] Figure 4 yes Figure 3 A magnified view of part M.

[0024] Figure 5 This is a schematic diagram of the adaptive initial force coupler buffer device in the embodiment when the initial force decreases.

[0025] Figure 6 yes Figure 5 A magnified view of N in the middle.

[0026] Legend:

[0027] 1. Buffer plate; 11. Cylinder wall; 2. Base; 3. Partition plate; 4. Intermediate rod; 5. Elastic body; 6. Support seat; 61. Bottom seat; 62. Side wall; 7. Base plate; 71. Bending part; 8. Linear elastic element; a. First boss; b. Second boss; c. Third boss. Detailed Implementation

[0028] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0029] like Figure 1 and Figure 2 As shown, the adaptive initial force coupler buffer device of this embodiment includes a base 2 for connecting to the car body and a buffer assembly for buffering and transmitting load. A linear elastic element 8 is provided between the base 2 and the buffer assembly, which can adjust the initial force of the coupler buffer device by providing a linear force. One end of the linear elastic element 8 is connected to the buffer assembly, and the other end is connected to the base 2. Specifically, the linear elastic element 8 is a rigid spring. In this embodiment, a spring is connected in series at the end of the buffer assembly, and a preset initial force is provided by spring compression. The linear force of the spring is used to control the initial force within a certain range.

[0030] In this embodiment, a limiting component is also provided between the base 2 and the buffer assembly to limit the displacement range of the linear elastic element 8. The limiting component can effectively adjust the displacement range of the spring and achieve adaptive adjustment, solving the problem that the spring displacement range cannot be controlled when the base plate 7 and the support 6 are connected by a planar contact.

[0031] In this embodiment, the limiting component includes a support base 6 and a base plate 7. The support base 6 is connected to the base 2, and the base plate 7 is connected to the buffer component. The support base 6 and the base plate 7 are connected in a relatively movable manner. The limiting component also includes a limiting part for limiting the relative movement range between the support base 6 and the base plate 7. The limiting part includes a first boss a, a second boss b, and a third boss c. The first boss a and the third boss c are spaced apart on the support base 6. A groove is provided between the first boss a and the third boss c for the second boss b to move. The second boss b is disposed on the base plate 7, and the second boss b can move on the groove between the first boss a and the third boss c. Specifically, base 2 is used to connect with the vehicle body. Base 2 includes a base plate and a base cylinder. Support 6 is disposed in the base cylinder and connected to the base plate. Base plate 7 is fixed to the end of the elastic body in the buffer assembly, and both the end of base plate 7 and the end of the buffer assembly are partially inserted into the base cylinder. Due to the presence of the limiting part, support 6 and base plate 7 can move relative to each other within a certain range. The limiting part specifically includes three boss structures, wherein the first boss a and the third boss c are arranged at intervals, and a groove structure for the second boss b to be inserted is formed between them. The second boss b is stuck between the first boss a and the third boss c. Base plate 7 can drive the second boss b to move between the first boss a and the third boss c of support 6. The first boss a and the third boss c are equivalent to limiting the two extreme movement positions of the second boss b of base plate 7. Through such a concave-convex structure, the displacement range of the spring can be effectively adjusted, and the structure is simple and easy to process.

[0032] In this embodiment, the gap between the first boss a and the second boss b is C, the gap between the second boss b and the third boss c is B, and the gap between the base plate 7 and the third boss c is A, where gap A ≥ C. Specifically, the initial design values ​​of each gap are adjusted according to the initial force of the overall coupler.

[0033] In this embodiment, the support base 6 includes a bottom seat 61 and side protective walls 62, which enclose a cavity. The linear elastic element 8 is disposed in the cavity inside the support base 6. Specifically, a spring is disposed inside the support base 6, with one end connected to the base plate and the other end connected to the base 2 via the support base 6. The support base 6 can guide the spring's deformation direction, preventing radial deformation of the spring under force and thus avoiding affecting the control and adjustment effect of the initial force, effectively preventing spring deflection.

[0034] In this embodiment, the first boss a and the third boss c are disposed on the outer side of the side wall 62, and the bottom plate 7 is provided with a bent portion 71 extending toward the support seat 6. The second boss b is disposed on the inner side of the bent portion 71. Specifically, the height of the first boss a is higher than the height of the third boss c, and the heights of the second boss b and the third boss c are the same, that is, the third boss c can slide on the groove, and the second boss b can also slide on the inner wall surface of the bent portion 71.

[0035] In this embodiment, the buffer assembly includes a buffer plate 1. A cylindrical wall 11 is provided on one side of the buffer plate 1, forming a chamber. A plurality of elastic bodies 5 are disposed within the chamber, and partitions 3 are provided between adjacent elastic bodies 5. Specifically, the buffer plate 1 is a front buffer plate used to connect with other buffers to transfer loads. The elastic bodies 5 are non-metallic elastic bodies. The cylindrical wall 11 connects with the base cylinder, and a portion of the cylindrical wall 11 is inserted into the base cylinder. The partitions 3 are positioned between the elastic bodies 5 to isolate them. This structure prevents the elastic bodies 5 from shifting.

[0036] In this embodiment, a central rod 4 is provided in the chamber, and the elastic body 5 is arranged around the central rod 4. Specifically, one end of the central rod 4 is fixed to the buffer plate 1, and the other end passes through the base plate 7 and is inserted into the cavity of the support base 6. The central rod 4 can prevent the elastic body 5 from shifting due to the influence of gravity load after it is stacked up.

[0037] The working process of the adaptive initial force coupler buffer device in this embodiment is as follows:

[0038] like Figure 3 and Figure 4 As shown, when the coupler buffer device is subjected to force, the buffer plate 1, partition plate 3, intermediate rod 4, elastic body 5 and base plate 7 move forward as a whole (to the right in the figure), and the spring is compressed. When the first boss a and the second boss b come into contact, the elastic body 5 is compressed, which plays a buffering role.

[0039] like Figure 3 and Figure 4 As shown, when the initial force of the elastic body 5 of the coupler buffer device increases due to low temperature or other factors, the buffer plate 1, partition plate 3, intermediate rod 4, elastic body 5 and base plate 7 move forward as a whole (to the right in the figure), the spring is compressed, the compression force increases within a certain range, the elastic body 5 is released, the initial force decreases, and the spring compression force and the preload of the elastic body 5 are rebalanced.

[0040] like Figure 5 and Figure 6 As shown, when the initial force of the elastic body 5 of the coupler buffer device decreases due to creep or other factors, the buffer plate 1, partition plate 3, intermediate rod 4, elastic body 5 and base plate 7 move backward as a whole (to the left in the figure), the spring is released, the compression force decreases within a certain range, the elastic body 5 is compressed, the initial force increases, and the spring compression force and the preload of the elastic body 5 reach equilibrium again.

[0041] The adaptive initial force coupler buffer device of this embodiment can fully meet the requirements of coupler buffer use. By connecting a spring in series at the end of the non-metallic elastomer 5, the linear force of the spring is used to control the initial force within a certain range. At the same time, the spring displacement range is effectively adjusted by the limiting part of the concave and convex structure on the support seat 6 and the base plate 7, so as to achieve the effect of adaptive adjustment of the initial force of the coupler within a certain range.

[0042] In other embodiments, the linear elastic element 8 may also be a vibration damper.

[0043] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A coupler buffer device with adaptive initial force, comprising a base (2) for connection to a vehicle body and a buffer assembly for buffering and transmitting loads, characterized in that: A linear elastic element (8) is provided between the base (2) and the buffer assembly, which can adjust the initial force of the coupler buffer device by providing a linear force. One end of the linear elastic element (8) is connected to the buffer assembly, and the other end of the linear elastic element (8) is connected to the base (2). The buffer assembly includes a buffer plate (1), a cylindrical wall (11) is provided on one side of the buffer plate (1), the cylindrical wall (11) encloses to form a cavity, a plurality of elastic bodies (5) are provided in the cavity, and a partition (3) is provided between adjacent elastic bodies (5). The elastomer (5) is a non-metallic elastomer; A limiting component for limiting the displacement range of the linear elastic element (8) is also provided between the base (2) and the buffer assembly; The limiting component includes a support base (6) and a base plate (7). The support base (6) is connected to the base (2), and the base plate (7) is connected to the buffer component. The support base (6) and the base plate (7) are connected in a relatively movable manner. The limiting component also includes a limiting part for limiting the relative movement range between the support base (6) and the base plate (7). The limiting part includes a first boss (a), a second boss (b) and a third boss (c). The first boss (a) and the third boss (c) are spaced apart on the support base (6). A groove is provided between the first boss (a) and the third boss (c) for the second boss (b) to move. The second boss (b) is disposed on the base plate (7) and can move on the groove between the first boss (a) and the third boss (c).

2. A self-adapting initial force coupler damper arrangement according to claim 1, characterized in that: The gap between the first boss (a) and the second boss (b) is C, the gap between the second boss (b) and the third boss (c) is B, and the gap between the base plate (7) and the third boss (c) is A, where gap A ≥ C.

3. The adaptive initial force coupler buffer device according to claim 1, characterized in that: The support base (6) includes a bottom seat (61) and a side wall (62), the side wall (62) enclosing to form a cavity, and the linear elastic element (8) is disposed in the cavity inside the support base (6).

4. The adaptive initial force coupler buffer device according to claim 3, characterized in that: The first boss (a) and the third boss (c) are located on the outer side of the side wall (62), and the bottom plate (7) is provided with a bent portion (71) extending toward the support seat (6), and the second boss (b) is located on the inner side of the bent portion (71).

5. The adaptive initial force coupler buffer device according to claim 1, characterized in that: The chamber is provided with an intermediate rod (4), and the elastic body (5) is arranged around the intermediate rod (4).

6. The adaptive initial force coupler buffer device according to any one of claims 1 to 5, characterized in that: The linear elastic element (8) is a spring or a shock absorber.

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