Rail vehicle tunnel pressure wave test bench and method

Abstract

The invention discloses a rail vehicle tunnel pressure wave test bench, comprising: a test model car as an experimental object; a tunnel system for the test model car to run through; a traction mechanism detachably connected with the test model car; a power device for driving traction Mechanism; guiding mechanism, guiding the running route of the test model car; detection system, used to detect the running speed of the test model car at the entrance and exit of the tunnel system and the pressure of the test model car when running in the tunnel system; the control system, and the detection system The system and the motor are connected separately, and the motor is controlled to switch between the acceleration state and the deceleration state of the traction mechanism; the buffer structure is used for deceleration and buffering after the test model car collides. Prevent the test model car from hitting the track support after driving out of the tunnel, so as to better achieve the purpose of repeated tests. Also disclosed is a test method for the above-mentioned test bench. The invention reduces the acceleration time of the test model car, reduces the deceleration time of the test model car and simplifies the structure of the device.

Description

technical field [0001] The patent of the present invention relates to the technical field of rail vehicle testing, in particular to a rail vehicle tunnel pressure wave test bench and method. Background technique [0002] When the subway train runs in the underground space, when the train speed exceeds 100km / h, many problems that can be ignored at low speeds become very obvious at high speeds. The aerodynamic effect of the interaction between the high-speed subway train and the air (Including pressure changes inside and outside the train, tunnel pressure waves, micro-pressure waves at tunnel openings, train air resistance, train wind, aerodynamic noise, etc.) are the key issues that must be faced and solved in the construction of high-speed subways. [0003] At present, Central South University has established a 350km / h dynamic model test system based on the dynamic model test system of the British AEA Railway Technology Research Institute. The test model car of this system u...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a rail vehicle tunnel pressure wave test bench to solve the technical problems in the prior art that the rail vehicle tunnel test bench has a complex structure and poor deceleration effect

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