Wear-resistant vibration-damping sleeper pad

Abstract

The wear-resisting and vibration-reducing type sleeper pad comprises a connecting layer and an elastic layer, a plurality of protrusions are evenly distributed on the upper end face of the elastic layer, the protrusions are embedded into grooves in the corresponding positions of the bottom face of the connecting layer, and the connecting layer and the elastic layer are combined to form the composite sleeper pad. A plurality of protruding columns protruding upwards are arranged on the upper end face of the connecting layer, and the connecting layer embedded into the bottom face of the concrete sleeper achieves firm combination of the composite sleeper cushion and the concrete sleeper under the combination of the protruding columns and the concrete sleeper. According to the composite sleeper pad, the structure of the composite sleeper pad is optimized, the elastic layer and the connecting layer are connected into a whole in an embedded mode through the structure that the protrusions and the grooves are matched with each other, the connecting reliability of the composite sleeper pad is improved, and the protruding columns are arranged on the upper end face of the connecting layer to be combined with the bottom of a concrete sleeper. Firm combination of the concrete sleeper and the composite sleeper pad is ensured, the vibration reduction effect of the sleeper is improved, and the wear resistance and the service life of the sleeper pad are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway laying equipment, and in particular relates to a wear-resistant and vibration-damping type sleeper pad. Background Art

[0002] Ballasted track is a traditional railway track structure characterized by a bed of crushed stone (called ballast) laid on the roadbed. Ballast plays a vital role in ballasted track, but frequent train traffic generates constant vibration and impact forces that gradually break down the ballast particles, weakening the vibration-damping effect of the roadbed and potentially damaging sleepers, fasteners, and rails.

[0003] Currently, most of the sleeper pad products on the market are composed of polyurethane and wire mesh composites or polyurethane and reinforced fiber composites. The common disadvantages of these two types are high cost and unreasonable structural design resulting in poor wear resistance and vibration reduction performance. Therefore, it is necessary to make improvements to the above problems. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a wear-resistant and vibration-damping type sleeper pad, which improves the connection reliability of the composite sleeper pad by optimizing the structure of the composite sleeper pad and adopting a structure in which the elastic layer and the connecting layer are embedded and connected as one through a plurality of protrusions and grooves. In addition, a plurality of protrusions are provided on the upper end surface of the connecting layer to be combined with the bottom of the concrete sleeper, so as to ensure that the concrete sleeper and the composite sleeper pad are firmly combined, thereby improving the vibration-damping effect of the sleeper and ensuring the wear resistance and service life of the sleeper pad.

[0005] The technical solution adopted by the utility model is as follows: a wear-resistant and vibration-damping rail sleeper pad, comprising a connecting layer and an elastic layer, the upper end surface of the elastic layer is evenly distributed with a plurality of protrusions, and the plurality of protrusions are embedded in grooves at corresponding positions on the bottom surface of the connecting layer, and the connecting layer and the elastic layer are combined to form a composite rail sleeper pad; the upper end surface of the connecting layer is provided with a plurality of upwardly protruding protrusions, and the connecting layer embedded in the bottom surface of the concrete sleeper realizes a firm combination of the composite rail sleeper pad and the concrete sleeper under the combination of the plurality of protrusions and the concrete sleeper.

[0006] The convex column is an integrated columnar structure with an inverted cone at the upper end and a column of equal diameter at the lower end.

[0007] Furthermore, the connecting layer and the plurality of protruding columns are an integrated structure made of ethylene-vinyl acetate copolymer material.

[0008] Furthermore, the protrusions and grooves are both square structures.

[0009] Furthermore, the elastic layer and the plurality of protrusions are an integrated structure made of vulcanized rubber particles.

[0010] The advantages of this utility model compared with the prior art are:

[0011] 1. This technical solution optimizes the structure of the composite sleeper pad and adopts a structure in which the elastic layer and the connecting layer are embedded and connected as one through a plurality of protrusions and grooves. This improves the connection reliability of the composite sleeper pad and provides conditions for effective vibration reduction and resistance.

[0012] 2. This technical solution ensures that the concrete sleeper and the composite sleeper pad are firmly connected by setting a number of protruding columns on the upper end surface of the connecting layer to connect with the bottom of the concrete sleeper, thereby ensuring the wear resistance and service life of the sleeper pad;

[0013] 3. This technical solution uses ethylene-vinyl acetate copolymer material to make a connecting layer with several protruding columns, which improves the elasticity and impact resistance of the composite sleeper pad from the material point of view, thereby improving the vibration reduction and impact resistance performance of the sleeper pad;

[0014] 4. This technical solution uses rubber particles to make an elastic layer with several protrusions, so that the elastic layer has the advantages of environmental protection, wear resistance and high vibration reduction performance, low cost, and the sleeper pad made has good vibration reduction effect and wear resistance, simple structure, reasonable design, reliable connection and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the utility model in use;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model;

[0017] Figure 3 for Figure 2 Middle AA section view;

[0018] Figure 4 This is a schematic diagram of the elastic layer structure of the utility model;

[0019] Figure 5 Figure 4 Middle BB cross-section;

[0020] Figure 6 This is a schematic diagram of the connecting layer structure of the utility model;

[0021] Figure 7 for Figure 6 Middle CC section view. DETAILED DESCRIPTION

[0022] The following is a combination of the embodiments of the present invention Figure 1-7The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0023] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0025] Wear-resistant and vibration-damping sleeper pads, such as Figure 1-7 As shown, it includes a connecting layer 1 and an elastic layer 2, the upper end surface of the elastic layer 2 is evenly distributed with a plurality of protrusions 6, and the plurality of protrusions 6 are embedded in the grooves 5 at corresponding positions on the bottom surface of the connecting layer 1, and the connecting layer 1 and the elastic layer 2 are combined to form a composite sleeper pad, wherein the protrusions 6 and the grooves 5 are both square structures; the upper end surface of the connecting layer 1 is provided with a plurality of upwardly protruding protrusions 3, and the connecting layer 1 embedded in the bottom surface of the concrete sleeper 4 realizes a firm combination of the composite sleeper pad and the concrete sleeper 4 under the combination of the plurality of protrusions 3 and the concrete sleeper 4; in the above structure, by optimizing the structure of the composite sleeper pad, the elastic layer 2 and the connecting layer 1 are embedded and connected as a whole through a structure that is adapted to the plurality of protrusions 6 and the grooves 5, thereby improving the connection reliability of the composite sleeper pad and providing conditions for effective vibration reduction and vibration resistance; by arranging a plurality of protrusions 3 on the upper end surface of the connecting layer 1 and combining with the bottom of the concrete sleeper 4, it is ensured that the concrete sleeper 4 is firmly combined with the composite sleeper pad, thereby ensuring the wear resistance and service life of the sleeper pad;

[0026] like Figure 3-4As shown in Figures 6-7, the specific structure of the boss 3 is as follows: the boss 3 is an integrated columnar structure with an inverted cone at the upper end and an equal-diameter column at the lower end, so that the boss 3 has good anti-slip performance after being combined with the concrete sleeper 4, and the connection stability and reliability are high; specifically, the connecting layer 1 and several bosses 3 are an integrated structure made of ethylene-vinyl acetate copolymer material, which has good elasticity and impact resistance, thereby improving the vibration reduction and impact resistance of the sleeper pad.

[0027] Among them, the elastic layer 2 and several protrusions 6 are an integrated structure made of vulcanized rubber particle material. The rubber particles are small particles made from waste tires and other rubber products through crushing, screening and other processes. They have the advantages of environmental protection (waste recycling), wear resistance and high vibration reduction performance, low cost, and the sleeper pads made from them have good vibration reduction effect and are wear-resistant.

[0028] The connecting layer 1 is made of ethylene-vinyl acetate copolymer material, which has good elasticity and impact resistance. The bottom surface of the connecting layer 1 is evenly distributed with grooves 5. Under the action of the mold, the rubber particles are vulcanized and embedded in the grooves 5, perfectly combined with them, and form an elastic layer 2 of rubber material. The top surface of the connecting layer 1 is evenly distributed with inverted cone-shaped protrusions 3. During the sleeper production process, the composite sleeper pad is pressed into the concrete rail 4 in the initial setting state to ensure that the composite sleeper pad is firmly combined with the concrete rail 4.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Wear-resistant and vibration-damping sleeper pad, characterized by: The invention comprises a connecting layer (1) and an elastic layer (2); the upper end surface of the elastic layer (2) is uniformly distributed with a plurality of protrusions (6), and the plurality of protrusions (6) are embedded in grooves (5) at corresponding positions on the bottom surface of the connecting layer (1), so that the connecting layer (1) and the elastic layer (2) are combined to form a composite rail sleeper pad; the upper end surface of the connecting layer (1) is provided with a plurality of upwardly protruding protrusions (3), and the connecting layer (1) embedded in the bottom surface of a concrete sleeper (4) realizes a firm combination of the composite rail sleeper pad and the concrete sleeper (4) under the combination of the plurality of protrusions (3) and the concrete sleeper (4).

2. The wear-resistant and vibration-damping sleeper pad according to claim 1, characterized in that: The convex column (3) is an integrated columnar structure with an inverted cone at the upper end and a column of equal diameter at the lower end.

3. The wear-resistant and vibration-damping sleeper pad according to claim 2, characterized in that: The connecting layer (1) and the plurality of protruding columns (3) are an integrated structure made of ethylene-vinyl acetate copolymer material.

4. The wear-resistant and vibration-damping sleeper pad according to claim 1, characterized in that: The protrusion (6) and the groove (5) are both square structures.

5. The wear-resistant and vibration-damping sleeper pad according to any one of claims 1 to 4, characterized in that: The elastic layer (2) and the plurality of protrusions (6) are an integrated structure made of vulcanized rubber particles.

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