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A Method for Improving the Anti-fatigue Performance of Rotary Arm Nodes of High-speed EMUs

An anti-fatigue technology for high-speed EMUs, which is applied in the field of improving the performance of vehicle system components, bogie primary vibration reduction system, and improving the anti-fatigue performance of high-speed EMU jib joints. Axial movement of the arm joints and aggravated wear of the wheel set, etc., to achieve the effects of protection from damage, prolonging life and reducing friction

Active Publication Date: 2019-11-08
ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the problem that the longitudinal stiffness and deflection stiffness of the existing pivot arm nodes are too large, and the pivot arm nodes are prone to loosening under normal working conditions, resulting in fatigue of the rubber body, and the axial movement of the pivot arm nodes, which makes the wear of the wheelset aggravated To solve the problem, a new method to improve the overall fatigue performance of the jib joint is proposed. The new method of the overall fatigue resistance of the jib joint improves the overall performance of the jib joint by changing the structure and adjustment method of the jib joint. In the case of ensuring the variable stiffness of the jib joints, the overall anti-fatigue performance of the jib joints can be effectively improved, so that the jib joints can meet the dynamic performance requirements of the standard EMU bogie

Method used

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  • A Method for Improving the Anti-fatigue Performance of Rotary Arm Nodes of High-speed EMUs
  • A Method for Improving the Anti-fatigue Performance of Rotary Arm Nodes of High-speed EMUs
  • A Method for Improving the Anti-fatigue Performance of Rotary Arm Nodes of High-speed EMUs

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Embodiment 1

[0038] Accompanying drawing has provided an embodiment of the present invention, as can be seen from the accompanying drawing, the present invention relates to a kind of method for improving the anti-fatigue performance of the pivoting arm joint of high-speed EMU, according to the position of the pivoting arm joint, the pivoting arm joint 1 It is divided into two vulcanized bodies 2 and 3 and the mandrel 4 press-fit combined structure, in which the two vulcanized bodies 2 and 3 are mounted on the mandrel 4 opposite to each other, and the rotating arm is realized by the relative position of the outer sleeve 5 and the inner sleeve 6 The rubber body 7 of the vulcanized body of the joint is pre-compressed, and its characteristic is that the joint of the rotating arm can effectively improve the fatigue life of the product and adjust the joint diameter, Axial rigidity matching; at the same time, an axial limit device 9 and an overload protection device 10 are set in the pivot arm nod...

Embodiment 2

[0054]The structure of the second embodiment is basically the same as that of the first embodiment, except that the controlled radial and axial stiffness ratios and the settings of the overload protection device are different. It is a method to improve the anti-fatigue performance of the rotating arm joints of high-speed EMUs. In the position, the pivot arm node is divided into two vulcanized bodies and the mandrel press-fit combined structure, in which the two vulcanized bodies are mounted on the mandrel opposite to each other, and the vulcanization of the pivot arm node is realized through the relative position of the outer sleeve and the inner sleeve The pre-compression of rubber parts of the body is characterized in that the pivot arm node can effectively improve the fatigue life of the product by implementing radial precompression and axial precompression on the vulcanized body of the pivot arm node at the same time, and adjust the diameter and axial stiffness of the pivot ...

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Abstract

Provided is a method for improving the anti-fatigue performance of a high-speed electric multiple unit rotary arm joint. According to the position of the rotary arm joint, the rotary arm joint is divided into two vulcanizates and a mandrel which are press-fitted into a combined structure, the two vulcanizates are oppositely mounted on the mandrel, and pre-compression of rubber bodies of the vulcanizates of the rotary arm joint is achieved through the relative position of an outer sleeve and an inner sleeve; radial pre-compression and axial pre-compression are performed simultaneously on the vulcanizates of the rotary arm joint to avoid the situation that when the rotary arm joint bears longitudinal and lateral forces, the rubber bodies are in a tension state, so that the anti-fatigue performance of a product is effectively improved; at the same time, through the method, the radial and axial stiffness of the rotary arm joint is adjusted, and meanwhile, an axial limiting device and an overload protection device are arranged in the rotary arm joint, so that the rotary arm joint can be prevented from axial moving during the operation process through the axial limiting device, and the overload protection device prevents overloading of the rotary arm joint .

Description

technical field [0001] The invention relates to a method for improving the performance of system components of a vehicle, in particular to a method for improving the anti-fatigue performance of a pivoting arm node of a high-speed EMU, which is mainly used in the primary vibration reduction system of the bogie of a standard EMU in my country. The invention belongs to the technical field of manufacturing key components of rail transit vehicles. Background technique [0002] In order to truly form our country's own unified high-speed rail standard technology, our country has proposed to establish China's own standard EMU since 2012. The so-called Chinese standard EMUs: referred to as standard, refers to the EMUs dominated by the Chinese standard system (among the 254 important standards, various Chinese standards account for 84%), and its functional standards and construction standards for supporting tracks are higher than those in Europe Standards and Japanese standards have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/30
CPCB61F5/30
Inventor 陈俊辉张玉祥罗俊蒋仲三冯万盛刘畅
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD