CN217705812U - Rubber spring and suspension system - Google Patents

Abstract

The application provides a rubber spring and suspension, this rubber spring includes: the inner core is positioned on the elastic groups at two opposite sides of the inner core; each elastic group comprises two elastic bodies which are respectively fixedly connected with the inner core, and each elastic body comprises a plurality of rubber layers and a spacer bush connected with the rubber layers. In the technical scheme, two elastic groups are arranged on two opposite sides of the inner core, each elastic group comprises two elastic bodies which are arranged oppositely, and a secondary rubber spring which is large in deformation in the horizontal direction and large in horizontal positioning rigidity is formed; and has the advantages of simple structure, convenient assembly and disassembly, maintenance-free, low replacement cost and the like.

Description

Rubber spring and suspension system

Technical Field

The application relates to the technical field of transportation, in particular to a rubber spring and a suspension system.

Background

In a secondary suspension system of a locomotive bogie, two typical load bearing modes are adopted, wherein one mode adopts a secondary rubber spring, and the other mode adopts a high-circle spring. The secondary rubber spring mainly acts on bearing the mass of the vehicle body vertically; longitudinally buffering impact load during traction and braking; when the vehicle passes through a curve, the relative motion between the vehicle body and the bogie is met by means of shearing deformation; when the vehicle runs in a straight line, the turning moment is provided, the snake-shaped motion stability of the locomotive is improved, and the vehicle is prevented from turning over.

The two-series rubber spring is a damping rubber product made by alternately stacking multiple rubber layers and steel plates and performing compression vulcanization. The high-rigidity vertical-direction shear-type steel pipe has the performance characteristics of higher vertical compression rigidity, lower shear rigidity, higher vertical bearing capacity and higher horizontal shear displacement capacity.

The vertical compression stiffness of the common secondary rubber spring is 10-20 kN/mm, and the transverse shear stiffness is less than 0.2kN/mm. However, in some special rail vehicles, the requirement for the motion stability of the vehicle operation is difficult to meet due to the requirement for large transverse flexibility and large transverse shear stiffness.

SUMMERY OF THE UTILITY MODEL

In view of the above, one or more embodiments of the present disclosure are directed to a rubber spring and a suspension system for improving the stability of a vehicle.

In a first aspect, there is provided a rubber spring comprising: the inner core is provided with elastic groups positioned on two opposite sides of the inner core; each elastic group comprises two elastic bodies which are respectively fixedly connected with the inner core, and each elastic body comprises a plurality of rubber layers and a spacer bush connected with the rubber layers.

In the technical scheme, two elastic groups are arranged on two opposite sides of the inner core, each elastic group comprises two elastic bodies which are arranged oppositely, and a secondary rubber spring which is large in deformation in the horizontal direction and large in horizontal positioning rigidity is formed; and has the advantages of simple structure, convenient assembly and disassembly, no maintenance, low replacement cost and the like.

In a specific embodiment, the rubber layer, the spacer and the inner core are vulcanized into a unitary structure. The structural strength of the rubber spring is improved.

In a specific possible embodiment, the side of the rubber layer, which is the most distant from the inner core, of the plurality of rubber layers facing away from the inner core is provided with an end plate. And is convenient to be connected with other structures.

In a specific embodiment, the number of the rubber layers is at least three. Has good elastic performance.

In a particular embodiment, the elastomer tapers in size in a direction away from the inner core. A tapered elastomer is formed.

In a particular embodiment, two of the elastic groups are arranged symmetrically with respect to the center of the inner core. Providing good elastic properties.

In a specific embodiment, the two elastomers in each elastic group are symmetrically disposed. Providing good elastic properties.

In a specific embodiment, four of the elastomers are arranged in an X-shape. Providing good elastic properties.

In a second aspect, there is provided a suspension system comprising a rubber spring as described in any one of the above. In the technical scheme, the two opposite sides of the inner core are provided with the elastic groups, each elastic group comprises two elastic bodies which are arranged oppositely, and a secondary rubber spring with large deformation in the horizontal direction and large horizontal positioning rigidity is formed; and has the advantages of simple structure, convenient assembly and disassembly, maintenance-free, low replacement cost and the like.

Drawings

In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.

FIG. 1 is a schematic structural diagram of a rubber spring provided in an embodiment of the present application;

fig. 2 is a top view of a rubber spring provided in an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail below with reference to specific embodiments and the accompanying drawings.

It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In order to facilitate understanding of the rubber spring provided in the embodiments of the present application, an application scenario thereof is first described. The rubber spring is used in a suspension system, and is particularly applied to a secondary suspension system of a locomotive bogie. The two-series rubber spring is a damping rubber product made by alternately stacking a plurality of rubber layers 21 and steel plates and press-vulcanizing them. The high-rigidity vertical-direction shear-type steel pipe has the performance characteristics of higher vertical compression rigidity, lower shear rigidity, higher vertical bearing capacity and higher horizontal shear displacement capacity. However, in some special rail vehicles, the requirement for the motion stability of the vehicle operation is difficult to meet due to the requirement for large transverse flexibility and large transverse shear stiffness. To this end, the embodiment of the application provides a rubber spring to improve the effect of a suspension system. The details of which are set forth in the accompanying drawings and the examples below.

Referring to fig. 1 and 2, fig. 1 shows a rubber spring provided in an embodiment of the present application, and fig. 2 shows a top view of the rubber spring. The main structure of the rubber spring comprises an inner core 10 and an elastic assembly, wherein the inner core 10 is used as a supporting structure of the rubber spring to support the elastic assembly. The elastic group is a functional structure of the rubber spring and is used for realizing the elastic deformation of the rubber spring so as to provide elastic potential energy. The above-described structures are described below with reference to the accompanying drawings, respectively.

With continued reference to fig. 1, the core 10 is a plate-like structure, which may be embodied as a rectangular structure or other shaped plate. As shown in fig. 1, the core 10 has an octagonal configuration. In the octagonal structure, four side edges arranged at intervals are side edge structures for arranging the elastic groups. It will be appreciated that other types of structures than the octagonal structure described above may be used, but whatever type is used, it is desirable to have the structure on the core 10 for providing the elastomeric groups spaced apart.

With continued reference to fig. 1, the number of the elastic groups provided in the embodiment of the present application is two, and the two elastic groups are located on two opposite sides of the inner core 10. Illustratively, the position of the core 10 in fig. 1 is taken as a reference position. When the elastic groups are arranged, the two elastic groups are respectively arranged on two opposite sides of the inner core 10 along the height direction, and the two elastic groups are arranged in a symmetrical mode. I.e. the two elastic groups are symmetrically arranged with respect to the centre of the core 10.

Each elastic group comprises two elastic bodies 20 which are oppositely arranged, and the two elastic bodies 20 are fixedly connected with the inner core 10 respectively. As shown in fig. 1, the two elastic bodies 20 in each elastic group are symmetrically arranged, and the two elastic bodies 20 are oppositely and obliquely arranged, so that a V-shaped arrangement is formed. When fixedly connected with the inner core 10, one end of the elastic body 20 is fixedly connected with the inner core 10, and the other end is a free end for connecting with an external component. And when two elastic groups are used, the four elastic bodies 20 are arranged in an X shape.

Each elastic body 20 is composed of a rubber layer 21 and a spacer 22. Illustratively, each elastomer 20 includes a plurality of rubber layers 21 and spacers 22 connecting adjacent rubber layers 21. For example, the number of the rubber layers 21 is at least three. Specifically, the number of the rubber layers 21 may be three, four, five, or the like. It should be understood that, although 3 rubber layers 21 and 2 spacers 22 are illustrated in fig. 1, when connected, the rubber layer 21 closest to the inner core 10 is fixedly connected to the inner core 10, and the three rubber layers 21 are fixedly connected to each other by two spacers 22, thereby forming the elastic body 20 that expands and contracts in a direction away from the inner core 10. However, the number of the rubber layers 21 of the elastic body 20 provided in the embodiment of the present application is not limited to 3 layers shown in fig. 1, and other numbers of layers may be used.

As an alternative, the elastomer 20 may have a tapered shape, with a wider end fixedly connected to the core 10 and a narrower end being a free end. I.e., in a direction away from the core 10, the elastomer 20 gradually decreases in size. When the structure is adopted, the rubber layer 21 is gradually reduced along the direction of the source capacity inner core 10, and the bearing capacity of the elastic body 20 in the longitudinal direction and the transverse direction is improved, so that the rubber spring is large in deformation in the horizontal direction and large in horizontal positioning rigidity.

As an alternative, in order to facilitate the connection with the external component, an end plate 30 is provided in the rubber layer 21, which is farthest from the inner core 10, on the side of the rubber layer 21 facing away from the inner core 10, among the plurality of rubber layers 21. Illustratively, the end plate 30 is fixedly connected to two elastic bodies 20 in an elastic group. As shown in fig. 1, the number of the end plates 30 is two, and one of the end plates 30 is located above the inner core 10 and is fixedly connected with the two elastic bodies 20 located above for connecting with an external component; the other end plate 30 is located below the inner core 10, and the two end plates 30 are located at both sides of the inner core 10 in the height direction, and the end plate 30 located below the inner core 10 is fixedly connected with the two elastic bodies 20 located below for connection with an external component.

With the above-described structural arrangement, the head between each end plate 30 and the core 10 is 1/2 of the vertical stroke.

It can be seen from the above description that, by arranging the elastic groups on the two opposite sides of the inner core 10, and each elastic group includes two elastic bodies 20 arranged oppositely, a secondary rubber spring with large horizontal deformation and large horizontal positioning stiffness is formed; and has the advantages of simple structure, convenient assembly and disassembly, no maintenance, low replacement cost and the like.

In addition, in order to improve the strength of the decoupling strand of the whole rubber spring, the rubber layer 21, the spacer 22 and the inner core 10 are vulcanized into an integral structure. That is, when four elastic bodies 20 are provided, the rubber layer 21, the spacer 22, and the core 10 of the four elastic bodies 20 are integrally vulcanized. Alternatively, the end plate 30, the rubber layer 21, the spacer 22 and the inner core 10 may be vulcanized together, thereby improving the structural strength of the entire rubber spring.

Embodiments of the present application also provide a suspension system that includes any one of the rubber springs described above. In the technical scheme, the two opposite sides of the inner core 10 are provided with the elastic groups, each elastic group comprises two elastic bodies 20 which are arranged oppositely, and a secondary rubber spring with large deformation in the horizontal direction and large horizontal positioning rigidity is formed; and has the advantages of simple structure, convenient assembly and disassembly, no maintenance, low replacement cost and the like.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.

In addition, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown in the provided figures, for simplicity of illustration and discussion, and so as not to obscure one or more embodiments of the disclosure. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the understanding of one or more embodiments of the present description, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the one or more embodiments of the present description are to be implemented (i.e., specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that one or more embodiments of the disclosure can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.

While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.

Claims (9)

1. A rubber spring, comprising: the inner core is positioned on the elastic groups at two opposite sides of the inner core; each elastic group comprises two elastic bodies which are respectively fixedly connected with the inner core, and each elastic body comprises a plurality of rubber layers and a spacer bush connected with the rubber layers.

2. A rubber spring according to claim 1, wherein said rubber layer, spacer and said inner core are vulcanized as a unitary structure.

3. A rubber spring according to claim 2, wherein the side of the rubber layer furthest from the inner core of the plurality of rubber layers facing away from the inner core is provided with an end plate.

4. A rubber spring according to claim 2, characterized in that said number of rubber layers is at least three.

5. The rubber spring of claim 4, wherein said elastomeric body tapers in size in a direction away from said inner core.

6. A rubber spring according to any one of claims 1 to 5, wherein two said elastic groups are symmetrically disposed about the center of said inner core.

7. A rubber spring according to claim 5, wherein the two resilient bodies in each resilient group are arranged symmetrically.

8. A rubber spring according to claim 7, wherein four of said elastic bodies are arranged in an X-shape.

9. A suspension system comprising a rubber spring according to any one of claims 1 to 8.

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