A jib node to prevent axial movement of the jib node of a high-speed EMU

Abstract

The invention discloses a rotating arm pitch point free of axial movement of high-speed-train rotating arm pitch points. The rotating arm pitch point comprises a rotating-arm-pitch-point outer sleeve,a rotating-arm-pitch-point inner sleeve, a vulcanization rubber body and a core shaft, wherein the rotating-arm-pitch-point outer sleeve, the rotating-arm-pitch-point inner sleeve and the vulcanization rubber body of the rotating arm pitch point are divided into two vulcanization combined bodies, and then are combined with the core shaft in a pressed mode, the two vulcanization combined bodies are oppositely installed on the core shaft, and precompression of the vulcanization rubber body of the rotating arm pitch point is achieved through the relative position between the rotating-arm-pitch-point outer sleeve and the rotating-arm-pitch-point inner sleeve; the rotating arm pitch point is characterized in that axial limiting devices are arranged in the rotating arm pitch point, and axial moving of the rotating arm pitch point in the running process is prevented through the axial limiting devices; the axial limiting devices include four combination limits of the rotating-arm-pitch-pointouter sleeve limit, the vulcanization rubber body limit, the inner sleeve limit and / or the core shaft limit, and it is achieved that axial moving of the rotating arm pitch point in the running processis prevented through the four combination limits of the rotating-arm-pitch-point outer sleeve limit, the vulcanization rubber body limit, the inner sleeve limit and / or the core shaft limit.

Description

technical field [0001] The invention relates to a system component of a vehicle, in particular to a pivoting arm node for preventing axial movement of the pivoting arm node of a high-speed EMU, and is mainly used for the first-series and second-series vibration damping systems of bogies of standard EMUs 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 distinct and comprehens...

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 arm node that can prevent axial movement is proposed. The new arm node that can prevent axial movement can improve the performance of the arm node by changing the structure of the arm node , to prevent axial movement, so that the jib joints can meet the dynamic performance requirements of standard EMU bogies

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