Wheel-rail wear simulation experiment device in alpine wind and sand environment

Abstract

The invention discloses a wheel-rail wear simulation experiment device in an alpine wind-sand environment, which is composed of a wheel-rail rolling wear test bench and an auxiliary system thereof. The low-temperature chamber sandstorm environment chamber (4) communicates with the sandstorm simulation control unit through the sand delivery pipe (16); the low-temperature chamber sandstorm environment chamber (4) is a double-layer chamber made of copper alloy, with upper and lower parts , that is, the upper chamber (401) and the lower chamber (402); the refrigerant connecting pipe (501) is connected to the upper chamber (401) and the lower chamber (402); the upper refrigerant pipe (5) connects the low-temperature chamber The obtained refrigerant is input into the upper chamber (401), and the lower refrigerant pipe (6) transports the refrigerant in the lower chamber (402) back to the low-temperature chamber unit. The device of the invention can simulate the alpine wind and sand environment, thereby accurately and reliably analyzing the relationship between factors such as temperature, wind and sand conditions, applied load, rotational speed of the test piece, slip, angle of attack, friction torque, experiment time, and shape after the experiment. The interaction relationship, and provide reliable experimental data for the study of the wheel-rail wear mechanism and the measures to reduce wear.

Description

technical field [0001] The invention relates to a wheel-rail wear simulation experiment device in an alpine wind-sand environment, in particular capable of realizing the simulation of rolling wear of wheel-rail materials in a railway transportation system in a low-temperature environment in an alpine region. Background technique [0002] Railway transportation has the advantages of safety, high speed, large volume and low energy consumption. As an important infrastructure, an artery of economic development and a popular means of transportation, railways are playing an increasingly important role in the existing transportation system and have become the mainstay of the transportation industry and economic construction. The wheel-rail friction pair is a key part of the railway transportation tool, and the operation, traction and braking of the train all need the action of the wheel-rail to realize. Moreover, the wheel-rail friction pair plays a key role in the safety, comfort...

AI Technical Summary

Problems solved by technology

[0004] The mechanism of wheel and rail wear is very complex, involving many fields such as tribology, materials science, mechanics, etc. It is difficult to simulate it theoretically based on existing knowledge

Although the reliability of the field experiment is high, it is expensive and time-consuming, especially for the research of extreme cold environment, it is difficult to artificially control the temperature and sandstorm environment of the wheel-rail wear system on the line site

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