High-cold wind-sand environment wheel rail abrasion simulation experimental device

Abstract

The invention discloses a high cold wind sand environment wheel rail abrasion simulation experimental device. The high cold wind sand environment wheel rail abrasion simulation experimental device consists of a wheel rail rolling abrasion test rack and a wheel rail rolling abrasion simulation auxiliary system. A low-temperature cavity wind-sand environmental cavity (4) is communicated with a wind-sand simulation control unit by virtue of a sand conveying pipe (16); the low-temperature cavity wind-sand environmental cavity (4) is a double-layer cavity which is made of a copper alloy and is provided with an upper part and a lower part, namely an upper cavity (401) and a lower cavity (402); a refrigerant connecting pipe (501) is connected to the upper cavity (401) and the lower cavity (402); an upper refrigerant pipe (5) is used for inputting refrigerant prepared by a low-temperature cavity unit into the upper cavity (401), and a lower refrigerant pipe (6) is used for conveying the refrigerant of the lower cavity (402) back to the low-temperature cavity unit. By adopting the high-cold wind-sand environment wheel rail abrasion simulation experimental device, a high-cold wind-sand environment can be simulated, the interactive relationship of factors such as temperature, wind-sand conditions, applied load, rotation speed of a test piece, slide difference, an impact angle, friction torque, experiment time, post experiment forms and the like can be accurately and reliably analyzed, and reliable experimental data can be provided for researching a wheel rail abrasion mechanism and building a measure for alleviating the abrasion.

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

Images