CN218756783U

CN218756783U - Heavy-duty CPU rail lower backing plate

Info

Publication number: CN218756783U
Application number: CN202122537299.2U
Authority: CN
Inventors: 何翠; 单晓方; 孙昕; 李凯
Original assignee: Beijing Zhongke Yongtong Technology Co ltd
Current assignee: Beijing Zhongke Yongtong Technology Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2023-03-28
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a heavy load CPU rail lower bolster, including the backing plate body, the backing plate body comprises upper padding face and lower padding face, the backing plate body adopts polyurethane (CPU) material to make, the lower padding face of backing plate body is concave surface shape, the both ends of the lower padding face of backing plate body are provided with the CPU backing plate of protruding this material and have outstanding wearability, higher modulus has, and excellent compression performance, higher tear strength simultaneously, it strengthens to make it to prevent the destructive power, and this CPU backing plate has good resistance to the influence of multiple environment, and stability in oils and solvent is better with ordinary rubber comparatively speaking, and resistant radiation and ray.

Description

Heavy-duty CPU rail lower backing plate

Technical Field

The utility model relates to a lower bolster field specifically is heavy load CPU rail lower bolster.

Background

The heavy haul railway is a railway with heavy total weight and large axle weight for carrying bulk cargo, and the running or running density and the transportation capacity of the trucks are extremely large, the total weight can reach 1-2 ten thousand tons, the axle weight can reach 30 tons, and the running density can reach 1 ten thousand tons per kilometer. The main characteristics of heavy haul railways are large transportation capacity and large axle weight. The two characteristics inevitably cause the track structure to bear larger load, thereby causing the damage speed of the track structure and parts thereof to be faster than that of a common line, and the deformation of the line to be increased greatly. Therefore, the maintenance workload and the maintenance cost of the line are increased compared with those of the common line, and the common rail base plate of the heavy haul railway at present is a rubber base plate and a thermoplastic polyester elastomer (TPEE) base plate. The rubber cushion plate is seriously damaged and crushed under the action of high-frequency heavy load, and the rubber cushion plate is poor in ageing resistance, oil resistance and environment resistance, and the ageing of the rubber is accelerated under the action of the high-frequency heavy load, so that the cushion plate fails prematurely. Although the TPEE backing plate has excellent bearing capacity, high strength and good environmental resistance, the TPEE backing plate generates indentation on the surface of a cement sleeper under the action of high-frequency heavy load due to overhigh hardness, and the service life of the sleeper is influenced. The use of TPEE tie plates is also limited due to the troublesome replacement of ties.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heavy load CPU rail lower bolster to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: heavy load CPU rail lower bolster, including the backing plate body, the backing plate body comprises upper padding face and lower padding face, the backing plate body adopts polyurethane (CPU) material to make, the lower padding face of backing plate body is concave surface shape, the both ends of the lower padding face of backing plate body are provided with the arch.

Preferably, the surface shape of the upper cushion surface and the lower cushion surface of the cushion plate body are different, the surface of the upper cushion surface is designed in a 45-degree twill mode, and the surface of the lower cushion surface is of a smooth surface structure.

Preferably, the polyurethane material has a wide hardness range of Shore A0-Shore D70.

Compared with the prior art, the beneficial effects of the utility model are that: the CPU pad of the material has the advantages of excellent wear resistance, higher modulus, excellent compression performance and higher tear strength, so that the anti-damage force is enhanced, the CPU pad has good resistance to various environmental influences, the stability in oil and solvent is better compared with that of common rubber, and the CPU pad is resistant to radiation and rays.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

fig. 2 is a schematic diagram of the internal structure of the workbench of the present invention.

The reference numbers illustrate: 1. a backing plate body; 2. putting the cushion on the surface; 3. and (5) laying a cushion surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: heavy load CPU rail lower bolster, including backing plate body 1, backing plate body 1 comprises upper padding face 2 and underlying surface 3, and backing plate body 1 adopts polyurethane (CPU) material to make, and underlying surface 3 of backing plate body 1 is the concave surface shape, and the both ends of underlying surface 3 of backing plate body 1 are provided with the arch.

In this embodiment, the surface shape of the upper cushion surface 2 and the lower cushion surface 3 of the cushion plate body 1 is different, the surface of the upper cushion surface 2 is designed to be 45-degree twill, and the surface of the lower cushion surface 3 is of a smooth surface structure.

Meanwhile, the hardness range of the polyurethane material is Shore A0-Shore D70.

When in use, the heavy-load CPU base plate of the utility model adopts different shapes of the upper surface and the lower surface. The upper surface is designed into 45-degree twill, and the purpose is to increase the friction force between the base plate and the bottom of the steel rail and ensure the fastening force of the fastener and the driving safety; the lower surface is of a smooth surface structure, the purpose is to prevent the tie plate from generating indentation on the surface of the cement sleeper under the action of high-frequency heavy load, the service life of the sleeper is influenced, and different use lines meeting the requirements of 50, 60 and 75 heavy loads can be obtained by adjusting the width of the CPU tie plate; through the interval width of adjustment 45 degrees twills, can obtain the requirement that satisfies different rail longitudinal resistance, and because this CPU backing plate possess good wearability, thereby make the wearing and tearing problem of backing plate and rail and sleeper solve, and high tensile strength and high tensile rate make the backing plate have good toughness and durability, excellent compression performance simultaneously, make the CPU backing plate compare with the equivalent rubber tie plate of hardness, have much higher bearing capacity, this kind of high bearing capacity combines together with wearability and toughness, make the backing plate have higher life, because heavy load backing plate is open-air operation, it is very high to the production of backing plate crack resistance and crack resistance growth requirement, high tear resistance is important.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Heavy load CPU rail lower bolster, its characterized in that includes backing plate body (1), backing plate body (1) comprises upper padding face (2) and underlying surface (3), backing plate body (1) adopts the polyurethane CPU material to make, underlying surface (3) of backing plate body (1) are the concave surface shape, the both ends of underlying surface (3) of backing plate body (1) are provided with the arch.

2. The heavy-duty CPU rail lower pad plate of claim 1, wherein the surface shapes of the upper pad surface (2) and the lower pad surface (3) of the pad plate body (1) are different, the surface of the upper pad surface (2) is in 45-degree twill design, and the surface of the lower pad surface (3) is in smooth surface structure.

3. The heavy-duty CPU rail pad of claim 1, wherein said polyurethane CPU material has a hardness range of shore A0-shore D70.