Thermoplastic high-modulus polyester elastomer base plate for heavy haul railway

Abstract

The utility model relates to the technical field of railway tracks, and provides a thermoplastic high-modulus polyester elastomer base plate for a heavy haul railway, which comprises an elastomer base plate body, shoulders are arranged on two sides of the bottom of the elastomer base plate body, and a plurality of heat dissipation grooves are arranged in the two shoulders. When the elastic cushion plate is used, a person can select a polyester elastomer material and manufacture the elastic cushion plate body through injection molding, mould pressing and extrusion processes, and the injection molding, mould pressing and extrusion processes are the prior art, so that excessive details are not needed any more; the elastomer base plate body is made of a polyester elastomer material, so that the strength, modulus and comprehensiveness of the elastomer base plate body are higher than those of a rubber material, meanwhile, the static rigidity of the elastomer base plate body is larger than or equal to 700, the high-load operation environment is met, and when the elastomer base plate body is manufactured, the height of the shoulder is increased to 17 mm from 11; the width of the retaining shoulder is increased from 5 to 10 mm, so that the strength of the retaining shoulder is enhanced, and the phenomena of damage and sliding-out are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of railway tracks, in particular to a high-modulus polyester elastomer pad for thermoplastic heavy-load railways. Background Art

[0002] Track pads, commonly used in railway construction and maintenance, are structural members placed between railway tracks and sleepers, and on existing heavy-load lines, pads are usually made of rubber.

[0003] However, the existing rubber pads show insufficient strength when subjected to large loads and large axle weights. The height and thickness of the current rubber pad shoulder design are relatively small, which makes the shoulder part of the rubber pad easily damaged during use. Specifically, the rubber pad slips out under the action of load, resulting in it not being effectively fixed in the predetermined position. This situation will cause a direct head-on collision between the steel rails and the concrete sleepers, thereby causing damage to the sleepers and track components. This damage not only affects the stability of the line, but may also pose a serious threat to driving safety. Therefore, a high modulus polyester elastomer pad for thermoplastic heavy-duty railways is needed. Utility Model Content

[0004] The purpose of this utility model is to solve the problem in the prior art that rubber pads show insufficient strength when subjected to large loads and large axle weights. The height and thickness of the current shoulder design of the rubber pads are relatively small, which leads to the problem that the shoulder part of the rubber pads is easily damaged during use.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a thermoplastic high-modulus polyester elastomer pad for heavy-duty railways, comprising an elastomer pad body, with shoulders provided on both sides of the bottom of the elastomer pad body, a plurality of heat dissipation slots being provided inside the two shoulders, and two anti-sliding blocks being provided on opposite sides of the two shoulders;

[0006] Two first shears are provided on both sides of the bottom of the elastic pad body;

[0007] Four second shears are arranged on both sides of the bottom of the two shoulder guards;

[0008] a plurality of transverse reinforcing ribs, all disposed on the bottom of the elastic pad body;

[0009] a plurality of longitudinal reinforcing ribs, all disposed on the bottom of the elastic pad body;

[0010] A plurality of buffer grooves are all provided on the top of the elastic pad body.

[0011] As a preferred embodiment, the material of the elastomeric pad body is polyester elastomer, and the material of the two shoulder blocks is polyester elastomer.

[0012] As a preferred embodiment, the four second shears are used for injection demoulding during the production of the pad, and the multiple buffer grooves are used to absorb and disperse impact energy.

[0013] As a preferred embodiment, a plurality of heat dissipation grooves are used for heat dissipation of the elastomer pad body, and a plurality of the longitudinal reinforcing ribs are used for longitudinal stiffness of the elastomer pad body.

[0014] As a preferred embodiment, the four anti-sliding blocks are used to prevent the elastic pad body from slipping, and the material of the multiple longitudinal reinforcing ribs and the multiple transverse reinforcing ribs is high-strength low-alloy steel.

[0015] As a preferred embodiment, the material of the four anti-sliding blocks is natural rubber.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. In the present invention, when in use, personnel can select polyester elastomer material and make the elastomer pad body through injection molding, molding, and extrusion processes. Injection molding, molding, and extrusion processes are already existing technologies, so they will not be described in detail. The material of the elastomer pad body is polyester elastomer material, so that its strength, modulus and comprehensiveness can be higher than rubber materials. At the same time, the static stiffness is ≥700, which meets the high-load operating environment. When the elastomer pad body is made, the shoulder height is increased from 11 to 17 mm; the shoulder width is increased from 5 to 10 mm, which strengthens the shoulder strength and prevents damage and sliding out. At the same time, the elastomer pad body The flat design is adopted to prevent the sleepers from being pressed and to extend the service life of the sleepers. The raw material of the elastomeric pad body is thermoplastic material, which can be recycled and reused, which is conducive to environmental protection. At the same time, the first shear setting can reduce the sliding of the elastomeric pad body on the cement sleeper. The second shear setting is to make the elastomeric pad body easier to demold during injection molding, which solves the problem of insufficient strength of rubber pads in the prior art when bearing large loads and large axle weights. The height and thickness of the current shoulder design of the rubber pad are relatively small, which leads to the problem that the shoulder part of the rubber pad is easily damaged during use.

[0018] 2. When the utility model is in use, the buffer grooves made on the elastomer pad body can make the elastomer pad body absorb and disperse the impact energy step by step and the pressure when the train passes, effectively reducing the dynamic stress of the train on the track. At the same time, longitudinal reinforcement ribs made of high-strength low-alloy steel are arranged at the bottom of the elastomer pad body to improve the longitudinal stiffness of the elastomer pad body, so that it is not easy to bend and deform excessively when under pressure. Transverse reinforcement ribs made of material are arranged at the bottom of the elastomer pad body to enhance the lateral stability of the elastomer pad body, so that it can better resist lateral shear force and impact force, and prevent it from lateral displacement or distortion. The heat dissipation grooves arranged on the shoulder can improve the heat dissipation of the elastomer pad body, and prevent it from performance degradation or accelerated aging due to excessive temperature. At the same time, the anti-sliding block made of natural rubber material arranged on the inner side of the shoulder can further increase the friction between the elastomer pad body and the track, and prevent the train from slipping during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a rear perspective structural diagram of a high modulus polyester elastomer pad for thermoplastic heavy-haul railways provided by the utility model;

[0020] Figure 2 This is a bottom-view schematic diagram of a high-modulus polyester elastomer pad for a thermoplastic heavy-haul railway provided by the utility model;

[0021] Figure 3 This is a schematic diagram of the partial three-dimensional structure of a high modulus polyester elastomer pad for thermoplastic heavy-duty railway provided by the utility model. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the partial three-dimensional structure of a high modulus polyester elastomer pad for thermoplastic heavy-duty railway provided by the utility model. Figure 2 .

[0023] Legend:

[0024] 1. Elastomer pad body; 101. Shoulder block; 102. First shear; 103. Second shear; 104. Buffer groove; 105. Heat dissipation slot; 106. Transverse reinforcement rib; 107. Longitudinal reinforcement rib; 108. Anti-sliding block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1, please refer to Figures 1 to 4 The utility model provides a technical solution: a high modulus polyester elastomer pad for thermoplastic heavy-load railway, comprising an elastomer pad body 1, with shoulders 101 provided on both sides of the bottom of the elastomer pad body 1, a plurality of heat dissipation slots 105 being provided inside the two shoulders 101, and two anti-sliding blocks 108 being provided on opposite sides of the two shoulders 101;

[0027] Two first shears 102 are provided on both sides of the bottom of the elastic pad body 1;

[0028] Four second shears 103 are arranged on both sides of the bottom of the two shoulder blocks 101;

[0029] A plurality of transverse reinforcing ribs 106 are provided at the bottom of the elastic pad body 1;

[0030] A plurality of longitudinal reinforcing ribs 107 are provided at the bottom of the elastic pad body 1;

[0031] A plurality of buffer grooves 104 are all formed on the top of the elastic pad body 1 .

[0032] Further, such as Figures 1 to 4 As shown, the material of the elastomer pad body 1 is polyester elastomer, and the material of the two shoulder blocks 101 is polyester elastomer. The elastomer pad body 1 can be made of polyester elastomer material, so that its strength, modulus and comprehensiveness can be higher than that of rubber material, and the static stiffness is ≥700, which meets the high-load operating environment.

[0033] Further, such as Figures 1 to 4 As shown, the four second shears 103 are used for injection demolding during pad production, and the multiple buffer grooves 104 are used to absorb and disperse impact energy. By setting the buffer grooves 104, the elastomeric pad body 1 can gradually absorb and disperse the pressure of the impact energy when the train passes, effectively reducing the dynamic stress of the train on the track.

[0034] Further, such as Figures 1 to 4 As shown, multiple heat dissipation grooves 105 are used for heat dissipation of the elastomer pad body 1, and multiple longitudinal reinforcing ribs 107 are used for the longitudinal stiffness of the elastomer pad body 1. The longitudinal stiffness of the elastomer pad body 1 can be improved by setting the longitudinal reinforcing ribs 107.

[0035] Further, such as Figures 1 to 4 As shown, four anti-slip blocks 108 are used to prevent the elastomer pad body 1 from slipping. The materials of the multiple longitudinal reinforcing ribs 107 and the multiple transverse reinforcing ribs 106 are high-strength low-alloy steel. The transverse reinforcing ribs 106 can be set to enhance the lateral stability of the elastomer pad body 1.

[0036] Further, such as Figures 1 to 4 As shown, the material of the four anti-sliding blocks 108 is natural rubber. The anti-sliding blocks 108 made of rubber material arranged on the inner side of the shoulder 101 can further increase the friction between the elastomer pad body 1 and the track to prevent the train from slipping during driving.

[0037] Working principle: When in use, personnel can choose polyester elastomer material and make the elastomer pad body 1 through injection molding, molding, and extrusion processes. The injection molding, molding, and extrusion processes are already existing technologies, so they will not be described in detail. The material of the elastomer pad body 1 is polyester elastomer material, so its strength, modulus and comprehensiveness can be higher than rubber materials. At the same time, the static stiffness is ≥700, which meets the high-load operating environment. When the elastomer pad body 1 is made, the height of the shoulder 101 increases from 11 to 17 mm; the shoulder 1 01 The width is increased from 5 to 10 mm, which strengthens the strength of the shoulder guard 101 and prevents damage and sliding out. At the same time, the elastomer pad body 1 adopts a flat design to prevent pressure on the sleeper and extend the service life of the sleeper. The raw material of the elastomer pad body 1 is a thermoplastic material, which can be recycled and reused, which is conducive to environmental protection. At the same time, through the setting of the first shear 102, the sliding of the elastomer pad body 1 on the cement sleeper can be reduced, and the setting of the second shear 103 is to make it easier for the elastomer pad body 1 to be demolded during injection molding. During use, the buffer groove 104 formed on the elastomeric pad body 1 can enable the elastomeric pad body 1 to gradually absorb and disperse the impact energy and pressure when the train passes, effectively reducing the dynamic stress of the train on the track. At the same time, longitudinal reinforcement ribs 107 made of high-strength low-alloy steel are provided at the bottom of the elastomeric pad body 1 to improve the longitudinal stiffness of the elastomeric pad body 1, so that it is not easy to cause excessive bending and deformation when under pressure. Transverse reinforcement ribs 106 made of material are provided at the bottom of the elastomeric pad body 1 to enhance the lateral stability of the elastomeric pad body 1, so that it can better resist lateral shear force and impact force, and prevent it from lateral displacement or distortion. The heat dissipation groove 105 provided on the shoulder 101 can improve the heat dissipation of the elastomeric pad body 1, and prevent its performance degradation or accelerated aging due to excessive temperature. At the same time, the anti-slip block 108 made of natural rubber material provided on the inner side of the shoulder 101 can further increase the friction between the elastomeric pad body 1 and the track, and prevent the train from slipping during driving.

Claims

1. A thermoplastic high modulus polyester elastomer pad for heavy-duty railway, comprising an elastomer pad body (1), characterized in that: Both sides of the bottom of the elastic pad body (1) are provided with shoulder blocks (101), a plurality of heat dissipation slots (105) are provided inside the two shoulder blocks (101), and two anti-sliding blocks (108) are provided on opposite sides of the two shoulder blocks (101); Two first shears (102) are both arranged on both sides of the bottom of the elastic pad body (1); Four second shears (103) are arranged on both sides of the bottom of the two shoulder blocks (101); A plurality of transverse reinforcing ribs (106) are arranged at the bottom of the elastic pad body (1); A plurality of longitudinal reinforcing ribs (107) are arranged at the bottom of the elastic pad body (1); A plurality of buffer grooves (104) are all provided on the top of the elastic pad body (1).

2. The thermoplastic high modulus polyester elastomer pad for heavy-haul railway according to claim 1, characterized in that: The material of the elastomer pad body (1) is polyester elastomer, and the material of the two shoulder blocks (101) is polyester elastomer.

3. The thermoplastic high modulus polyester elastomer pad for heavy-duty railway according to claim 1, characterized in that: The four second shears (103) are used for injection demoulding during the production of the pad, and the plurality of buffer grooves (104) are used for absorbing and dispersing impact energy.

4. The thermoplastic high modulus polyester elastomer pad for heavy-duty railway according to claim 1, characterized in that: The plurality of heat dissipation grooves (105) are used for heat dissipation of the elastic pad body (1), and the plurality of longitudinal reinforcing ribs (107) are used for longitudinal rigidity of the elastic pad body (1).

5. The thermoplastic high modulus polyester elastomer pad for heavy-duty railway according to claim 4, characterized in that: The four anti-sliding blocks (108) are used to prevent the elastic pad body (1) from slipping, and the material of the plurality of longitudinal reinforcing ribs (107) and the plurality of transverse reinforcing ribs (106) is high-strength low-alloy steel.

6. The thermoplastic high modulus polyester elastomer pad for heavy-haul railway according to claim 1, characterized in that: The material of the four anti-sliding blocks (108) is natural rubber.

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