Simulation test device for pneumatic load of vehicle body

Abstract

The invention provides a simulation test device for a pneumatic load of a vehicle body. The simulation test device is used for a simulation test of the pneumatic load of the vehicle body. The simulation test device consists of a test bed, a fixing mechanism for fixing two ends of the vehicle body to be tested onto the test bed as well as a transverse pressurizing mechanism for applying the pressure on two sides of the vehicle body to be tested, wherein a track for allowing the vehicle body to be tested to move is arranged on the test bed; the transverse pressurizing mechanism comprises a plurality of pressurizing assemblies; each pressurizing assembly consists of an upright post, a wind pressure plate and a hydraulic actuator; the bottom of each upright post is fixedly arranged on the test bed; one end of the hydraulic actuator is hinged with each upright post; and the other end of the hydraulic actuator is hinged with one lateral surface of the wind pressure plate. According to the simulation test device disclosed by the invention, an air pressure load test carried out in the wind pressure plate is replaced by a mechanical device in normal-temperature and normal-pressure environments, and the technical problems that the cost is high and no generality is obtained due to the fact that a pressure container with ultralarge volume is required to be manufactured in the prior art are solved.

Description

technical field [0001] The invention relates to an aerodynamic load simulation test device, which is especially suitable for the aerodynamic load simulation test of a car body of a high-speed EMU. Background technique [0002] With the high speed of railway vehicles, railway vehicles, especially high-speed EMU vehicles, will cause large pressure fluctuations outside the trains when they meet. When trains frequently meet on the line, alternating airtight pressure loads will be formed on the trains. The influence of aerodynamic loads on the strength of EMUs is usually simulated by using an aerodynamic load simulation test device for high-speed EMUs. [0003] The prior art usually adopts a cylindrical tank body, the bottom of which is provided with guide rails, and the car body to be tested is sent into the tank body by means of a process bogie, and then the car body to be tested is sealed in the tank body, and passed to the sealed tank body. Gas is introduced into the body to...

AI Technical Summary

Problems solved by technology

[0003] The prior art usually adopts a cylindrical tank body, the bottom of which is provided with guide rails, and the car body to be tested is sent into the tank body by means of a process bogie, and then the car body to be tested is sealed in the tank body, and passed to the sealed tank body. Gas is introduced into the body to carry out the pressure test on the car body. During the test, the airtightness of the tank body is very high, and it is very difficult to process the tank body that can accommodate the entire car body. The existing tank body Usually only part of the car body (maximum 1 / 3 of the car body) can be pressure tested. During the test, it is necessary to connect the car body to be tested and the tank body through the end cover to ensure that the car body part placed inside the tank body is in a In order to carry out effective pressure tests in the sealed space, due to the differences in the dimensions and structures of different types of car bodies, different end covers are usually required to seal the tank body, which has poor versatility. In addition, the tank body is a pressure vessel, and the processing cost high

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