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A Method for Preventing Axial Movement of Rotary Arm Nodes of High-speed EMUs

A technology of axial movement and arm rotation, which is applied in the direction of bogie, axle box installation, railway car body parts, etc., and can solve problems such as axial movement, wheel set wear, and easy loosening

Active Publication Date: 2020-10-27
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 address the requirement that the existing pivoting arm nodes are not well applicable to the power bogie of high-speed EMUs, and the product has too large longitudinal stiffness and deflection stiffness under normal working conditions, which is prone to loosening, resulting in axial jumping. To solve the problem of wheel set wear, a new method for preventing the axial movement of the arm node is proposed. The new method for preventing the axial movement of the arm node improves the axis of the arm node by changing the structure of the arm node. In the case of ensuring the variable stiffness of the jib joints, the axial movement of the jib joints can be effectively prevented, 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 Preventing Axial Movement of Rotary Arm Nodes of High-speed EMUs
  • A Method for Preventing Axial Movement of Rotary Arm Nodes of High-speed EMUs
  • A Method for Preventing Axial Movement of Rotary Arm Nodes of High-speed EMUs

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Embodiment 1

[0036] The accompanying drawings show an embodiment of the present invention, as can be seen from the accompanying drawings, the present invention relates to a method for preventing the axial movement of the pivoted arm node, according to the position of the pivoted arm node, the pivoted arm node is divided into two The vulcanized rubber body and the mandrel are press-fitted combined structure, in which the two vulcanized rubber bodies are installed on the mandrel opposite to each other, and the relative position of the outer sleeve and the inner sleeve realizes the pre-compression of the vulcanized rubber body of the arm node. An axial limit device is arranged in the arm node, and the axial movement of the rotary arm node during operation is prevented by the axial limit device. The pivoting arm node includes a pivoting arm node outer casing 1, a pivoting arm node inner casing 2, a vulcanized rubber body 3 and a mandrel 4, wherein the pivoting arm node outer casing 1 of the piv...

Embodiment 2

[0048] 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 are different. A method to prevent the axial movement of the pivot arm node is to place the pivot arm node according to the position of the pivot arm node. It is divided into two vulcanized bodies and a mandrel press-fit combined structure, in which the two vulcanized bodies are installed on the mandrel opposite to each other, and the rubber part of the vulcanized body at the pivot arm node is pre-compressed through the relative position of the outer sleeve and the inner sleeve. An axial limit device is arranged in the arm node, and the axial movement of the rotary arm node during operation is prevented by the axial limit device.

[0049] The axial limit includes the combined definition of the four aspects of the outer casing of the arm node, the vulcanized rubber body, the inner sleeve and / or the mandrel. The combine...

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Abstract

Provided is a method for preventing rotary arm joint of a high speed train against axial endplay. According to the position where the rotary arm joint is located, the rotary arm joint is divided intotwo press-fitting combined structures for vulcanization bodies and a mandrel. The two vulcanization bodies are installed oppositely on the mandrel. Vulcanization body rubber parts for the rotary arm joint are pre-compressed through relative positions between outer sleeves and inner sleeves. Axial limiting devices are arranged in the rotary arm joint and help prevent the rotary arm joint against axial endplay during operation. The axial limiting comprises combined limiting in four aspects including limiting of the outer sleeves of the rotary arm joint, limiting of the vulcanization body rubberparts, limiting of inner sleeves and / or limiting of the mandrel. Due to the combined limiting in four aspects including limiting of the outer sleeves of the rotary arm joint, limiting of the vulcanization body rubber parts, limiting of inner sleeves and / or limiting of the mandrel, the rotary arm joint is prevented against axial endplay during operation.

Description

technical field [0001] The invention relates to a vibration reduction method for system components of a vehicle, in particular to a method for preventing the pivoting arm nodes of a high-speed EMU from moving axially during operation, and is mainly used for the primary and secondary bogies of standard EMUs in my country. Department of vibration damping system. 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 Japan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/30
CPCB61F5/305
Inventor 罗俊黄江彪蒋仲三张玉祥雷军玉谢彦飞
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD