EMU axle end grounding device wear test bench

Abstract

The invention discloses a wear test bench for a shaft end grounding device of an EMU. The test bench includes a driving motor assembly fixed on a basic frame and a test shaft assembly symmetrically arranged on both sides of the driving motor assembly and having the same structure; The test shaft assembly is fixed on the basic frame through the installation ring assembly symmetrically arranged at both ends of the same structure; the drive motor assembly is connected with the test shaft assembly on both sides through the transmission belt to form the structure of the test bench. Power train components; the test shaft assembly consists of the test shaft, the test shaft pulley fixed on the test shaft and the ground connection flange fixed on the end of the test shaft. The invention can simulate the wear of the EMU under actual working conditions, and analyze the main cause of the wear of the grounding device of the EMU through the comparison data of the presence or absence of current. The test bench adopts a reasonable mechanical structure speed adjustment system to ensure Accuracy of grounding device loss test data.

Description

technical field [0001] The invention relates to a grounding drainage test device for a rail vehicle, more specifically, the invention relates to a wear test bench for a shaft end grounding device of an EMU. Background technique [0002] As the main artery of the national economy, the railway is an important symbol to measure a country's infrastructure level and transportation capacity. High-speed EMUs are one of the core technologies of high-speed railways. Under the premise of ensuring operational safety, in order to further improve the operation quality of my country's high-speed railways, it is imperative to improve the overall technical level of EMUs, and optimizing the shaft end grounding device of EMUs is one of them. very important technical issue. [0003] The grounding device is an important part of the EMU grounding system. Its main function is to prevent the current from passing through the EMU bearings to cause electric corrosion and endanger the driving safety. ...

AI Technical Summary

Problems solved by technology

However, the wear test of the grounding device is a destructive test, and only when the grounding device of the EMU is under high-speed conditions can the damage and its cause be diagnosed

However, the existing test device cannot realize the test of the wear condition of the grounding device during the actual operation of the EMU.

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