A high-pressure gas ejection collision device

Abstract

The invention provides a high-pressure gas ejection collision device, and belongs to the technical field of rail vehicle collision tests. The high-pressure gas ejection collision device comprises an air compressor, a collision vehicle body and a rigid wall at the front end of a rail, and is characterized in that an air cylinder is fixed with the ground foundation, an output pipeline of the air compressor is connected with a gas one-way valve and a gas dryer in series and is connected with the tail end of a back cavity a of the air cylinder through an inlet pipe joint, the air cylinder is provided with the back cavity a, a middle cavity b and an ejection cavity c, the cavities are internally provided with a duplex piston and a piston connecting rod, the bottom of the back cavity a is provided with an emergency release valve, a gas flow control valve is arranged between the back cavity a and the middle cavity b, the upper part of the ejection cavity c is provided with a release valve, and the lower part is provided with a water flow control valve; and the ejection cavity c is internally provided with a high-strength cloth bag, two ends of the cloth bag form closed spaces respectivelywith a high-pressure ejection piston and a right-end plate, and the right end of the ejection cavity c is provided with three uniformly distributed buffer springs. The high-pressure gas ejection collision device is mainly applied to rail vehicle collision tests.

Description

technical field [0001] The invention belongs to the technical field of rail vehicle collision test. Background technique [0002] The collision accident of rolling stock is one of the most serious accidents in the safe operation of rolling stock. In order to improve the safety and crashworthiness of rolling stock and protect the safety of passengers and property, Western countries have carried out research on the crash and test of the whole vehicle earlier. The passive safety protection of rolling stock started relatively late, and collision systems and devices under laboratory conditions are even rarer. Due to the high cost, long cycle, non-repeatability and unbearable cost of the vehicle collision test, finite element simulation is mostly used in China instead Experimental research, however, finite element simulation simplifies the model, reduces constraints, and there are still some gaps with the real collision conditions. In order to conduct in-depth research on the pass...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-pressure gas ejection collision device, which can effectively solve the problems of vehicle high-speed collision scene restoration and parameter collection

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