Pressure wave test bed and method for railway vehicle tunnel

Abstract

The invention discloses a pressure wave test bench of a railway vehicle tunnel, and the test bench comprises a test model vehicle used as an experimental object; a tunnel system which allows the test model vehicle to pass; a traction mechanism which is detachably connected with the test model vehicle; a power device which is used for driving the traction mechanism to operate; a guide mechanism which is used for guiding the running route of the test model vehicle; a detection system which is used for detecting the running speed of the test model vehicle at the entrance and exit of the tunnel system and the pressure of the test model vehicle running in the tunnel system; a control system which is connected with the detection system and the motor and controls the motor to realize switching between an acceleration state and a deceleration state of the traction mechanism; and a buffer structure which is used for decelerating and buffering the test model vehicle after collision. The test model vehicle is prevented from colliding with a track bracket after driving out of the tunnel, so that the purpose of repeated test is better achieved. The invention further discloses a test method for the test bench, the acceleration time of the test model vehicle is shortened, the deceleration time of the test model vehicle is shortened, and the structure of the device is simplified.

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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