Motor train unit shaft end grounding apparatus wear test bench

Abstract

The invention discloses a motor train unit shaft end grounding apparatus wear test bench. The test bench comprises a driving motor assembly fixed on a base framework and test shaft assemblies which are symmetrically arranged at the two sides of the driving motor assembly and have the same structure; each test shaft assembly is fixed on the base framework through mounting ring assemblies which are symmetrically arranged at the two ends and have the same structure; the driving motor assembly is in transmission connection with the test shaft assemblies at the two ends through a conveyor belt to form a power transmission system part of the test bench; and each test shaft assembly is composed of a test shaft, a test shaft belt pulley fixed on the test shaft and a grounding connection flange fixed at the shaft end of the test shaft. According to the invention, wear of a motor train unit in an actual working condition can be simulated, major causes of wear of a motor train unit grounding apparatus are analyzed through comparison data in case of currents and in case of no currents, and the test bench employs a reasonable mechanical structure rotating speed adjusting system and guarantees the accuracy of loss test data of the motor train unit shaft end grounding apparatus.

Description

technical field [0001] The invention relates to a grounding and drainage test device for rail vehicles, and more particularly, the invention relates to a wear test bench for the grounding device of an EMU axle end. Background technique [0002] As the main artery of the national economy, 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 operational 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 grounding system of the EMU. Its main function is to prevent the electric current from passing through the bearing of the EMU and endangering the driving safet...

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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