Movable model experiment system for high-speed train

Abstract

The invention discloses a system for testing a dynamic model of a high-speed train. The testing system comprises a train dynamic model unit and an air gun drive unit; the train dynamic model unit comprises a train model and a guide rail; the train model can slide along the guide rail under the drive of the air gun drive unit; the air gun drive unit comprises a high-pressure gas generation device, a gun barrel and a moving part; the moving part is arranged inside the gun barrel; and the high-pressure gas generation device is connected with the rear end of the gun barrel directly or by a pipeline, drives the moving part to move through the input of high-pressure gas to the gun barrel and moves with the train model outside of the gun barrel together by the moving part. The testing system can carry out air dynamics research of the tunnel and can be also made into a bidirectional testing device for convergence of the high-speed trains and other air dynamics research.

Description

technical field [0001] The invention relates to a high-speed train dynamic model test system. Background technique [0002] In the high-speed train dynamic model test, it is necessary to launch the model at high speed and make the model slide on the track. At present, the model launch method successfully applied to orbital glide is to use rubber band ejection. For example, the British Train Research Center’s scaled 1 / 25 model with a mass of 10kg has a maximum speed of 55m / s; my country’s Central South University of Technology High-speed Train Aerodynamics Research Center uses a scaled 1 / 20 model with a mass of 30kg, with a maximum sliding speed of up to 61m / s. With the development of high-speed trains, the speed continues to increase. In the study of aerodynamics of high-speed trains, the test speed of the dynamic model is required to reach more than 100m / s, the model reduction ratio reaches 1 / 10, and the model weight is generally required to be more than 100kg. If it is s...

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Problems solved by technology

But so far, air-powered models gliding at high speeds on rails have not been reported

my country's Southwest Jiaotong University and Japan's high-speed rail center slide on ropes through air-driven models. Although the sliding speed is high (up to 100m / s), the quality of the model is small, and the maximum reduction ratio is only 1 / 80, and it is only used in Investigate the aerodynamics of trains passing through tunnels

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