Three-degree-of-freedom wheel rail relation test stand for high-speed track

Abstract

The invention relates to a three-degree-of-freedom wheel rail relation test stand for a high-speed track. The test stand comprises dual three-degree-of-freedom track wheel system devices (1) and a weight vehicle and six-degree-of-freedom pose control system device (2); the weight vehicle and six-degree-of-freedom pose control system device (2) is mounted on a No. 1 T-shaped groove platform (5) and a No. 2 T-shaped groove platform (6) through 2 No. 1 vertical actuator and connecting rod assemblies and 2 No. 2 vertical actuator and connecting rod assemblies. The test stand can be used to accurately simulate the vibration of opposite wheel sets on the track when a high-speed bullet train runs on an actual track; two track wheels are not directly connected and achieve three-degree-of-freedom movement respectively through six actuators, namely transverse movement, vertical movement and rotational movement around a longitudinal axis; and the simulation of unsmooth phenomenon on the high-speed train track can be realized. Therefore, the problem that wheeltrack reliability tests cannot be directly conducted in an actually running train is solved.

Description

technical field [0001] The invention relates to a wheel-rail interaction test platform based on wheel-rail contact, more specifically, the invention relates to a new three-degree-of-freedom wheel-rail relationship test platform for a high-speed track. Background technique [0002] At present, under the premise that our country implements the principle and policy of greatly increasing the speed of railways, the running speed of rail vehicles in our country has been greatly improved. This has also led to the rapid development of EMU technology. At present, the maximum speed of EMUs in operation has reached 350km / h, and the maximum speed of EMUs under development is close to 500km / h. By 2020, the national railway network will be basically completed, the operating mileage will reach more than 100,000 kilometers, the passenger dedicated line and high-speed railway will reach 10,000 kilometers, and the urban rail transit will reach about 4,000 kilometers. Due to the increase of v...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the wheel-rail reliability test cannot be done directly on the train in actual operation, thereby providing a high-speed track three-degree-of-freedom wheel-rail relationship test bench

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