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Method for improving fatigue reliability of axle box positioning node and axle box positioning node

A technology for positioning nodes and reliability, applied in axlebox installation, transportation and packaging, railway car body parts, etc., can solve the problem that the free surface of rubber layer is small, the internal stress of rubber cannot be released in time, and the unfavorable fatigue and reliability of axlebox positioning nodes Sex and other issues to achieve the effect of prolonging the service life and ensuring the overall performance

Pending Publication Date: 2018-03-16
ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the free surface of the rubber layer of the current axle box positioning node is very small, the internal stress of the rubber cannot be released in time, which is not conducive to the fatigue reliability of the axle box positioning node, and a method for improving the fatigue reliability of the axle box positioning node is proposed. The method and the axle box positioning node, while ensuring the performance of the axle box positioning node, increase the free surface of the rubber layer, and greatly release the internal stress of the rubber when it is loaded, thereby improving the fatigue reliability of the axle box positioning node

Method used

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  • Method for improving fatigue reliability of axle box positioning node and axle box positioning node
  • Method for improving fatigue reliability of axle box positioning node and axle box positioning node
  • Method for improving fatigue reliability of axle box positioning node and axle box positioning node

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An axle box positioning node, including a mandrel 1, a rubber layer 2, a split casing 3, and an overall casing 4, the rubber layer 2 is vulcanized and bonded to the outside of the mandrel 1, and a part of the split casing 3 is vulcanized and bonded to the rubber layer 2 The outer side and the other part are assembled on the outer side of the rubber layer 2, the fixed surface is between the rubber layer 2 and the mandrel 1, and the vulcanized part of the split casing 3, and there is a free surface between the rubber layer 2 and the assembled part of the split casing 3 ; The integral body formed by mandrel 1, rubber layer 2 and split casing 3 is pressed into the overall casing 4. The fixed surface between the rubber layer 2 and the vulcanized part of the mandrel 1 and the split casing 3 ensures the overall performance of the axle box positioning node, and the free surface between the rubber layer 2 and the assembled part of the split casing 3 makes the axle box positioning...

Embodiment 2

[0034] This embodiment is basically the same as Embodiment 1, the difference is that the outer surface of the split casing 3 of this embodiment is cylindrical as a whole, and is divided into four pieces S1-S4 in the radial direction, and S1 and S3 have the same specifications and are vulcanization components 31 and S2. The same specification as S4, it is an assembled component 32, and S1 and S3 are symmetrically vulcanized on the outside of rubber layer 2, and S2 and S4 are symmetrically assembled on the outside of rubber layer 2, that is, S1-S4 are symmetrically arranged on the outside of rubber layer 2 to ensure the positioning nodes of the axle box stability and overall performance.

[0035] The overall casing 4 is a hollow cylinder. First, vulcanize the rubber layer 2 between S1, S3 and the mandrel 1, then assemble S2 and S4 to the outside of the rubber layer 2, and finally press the assembled whole into the overall casing 4 to form a Complete axlebox positioning node.

[0...

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Abstract

The invention provides a method for improving the fatigue reliability of an axle box positioning node and the axle box positioning node. The axle box positioning node is designed to comprise a mandrel, a rubber layer, a sectioning cover and an integral cover; by means of vulcanized adhesion between the rubber layer and the mandrel, partial vulcanized adhesion between the rubber layer and the sectioning cover and pressing of the positioning node in the integrated cover after partial assembly, the free surface of the rubber layer is increased on the basis that the adhesive strength between the rubber layer and the mandrel and between the rubber layer and the sectioning cover, so that the internal stress of the rubber layer is conveniently and greatly released in time when the axle box positioning node is loaded, the situation that cracks occur due to rubber stress concentration is avoided, and the service life of the product is prolonged.

Description

technical field [0001] The invention relates to a method for improving the fatigue reliability of an axle box positioning node and an axle box positioning node, belonging to the technical field of rail vehicle component manufacturing. Background technique [0002] The axle box structure is the movable joint connecting the frame and the wheel set on the rail vehicle. In addition to transmitting forces and vibrations in various directions, the axle box structure must also ensure that the wheel set can jump up and down and move side to side relative to the frame to adapt to the track conditions. Axle box positioning is also wheel set positioning, that is, constraining the mutual position between the wheel set axle box and the frame. The load is transmitted and distributed to the wheelset; the wheelset rotates flexibly, and the bogie passes the curve smoothly; the stable inertia of the car body is used to contain and reduce the lateral swing of the axle box. Therefore, the posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61F5/30
CPCB61F5/305Y02T10/86
Inventor 肖祥龙张玉祥曾先会罗俊冯万盛蒋仲三
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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