Pressure-controllable gas impact test bench

Abstract

The invention discloses a pressure-controllable gas impact test bench. The test bench comprises a stretching device and an air guide device, the stretching device comprises a stretching table bracket;a stretching motor is installed at the top of the stretching table bracket, an output shaft of the stretching motor is connected with a lead screw, the thread turning directions of the upper sectionand the lower section of the lead screw are opposite, an upper sliding table and a lower sliding table are in threaded connection outside the upper section and the lower section of the lead screw respectively, and a test piece clamp for clamping a test piece is arranged between the upper sliding table and the lower sliding table. The air guide device comprises an air storage tank, a horizontal airguide cylinder is fixedly connected to an air outlet of the air storage tank, a screw is fixedly connected to an output shaft of the piston motor, a piston is in threaded connection with the outsideof the screw and extends into the air guide cylinder and can slide in the air guide cylinder, and a flow stabilizing pipe is connected to the bottom of the middle section of the air guide cylinder. The test bench has the advantages that stable impact air pressure can be output, and mechanical response data of a material under fixed impact pressure can be conveniently obtained; the safety is high.

Description

technical field [0001] The invention relates to a test device, in particular to a pressure-controllable gas impact test bench. Background technique [0002] For some combustible viscoelastic materials, they will be impacted by gas under actual working conditions and cause damage or cracks, so it is very necessary to evaluate their mechanical properties under such working conditions. However, the traditional cold air impact test bench cannot control the pressure, and the output pressure changes greatly with time, which is not conducive to the data acquisition of the pressure sensor and the post-processing of the test data. At the same time, due to the closed structure of the traditional cold air impact test bench, when the impact test is performed on combustible materials, if the test material is ignited, the pressure of the impact channel will increase sharply, and an explosion may occur, so that the safety of the test personnel cannot be guaranteed. . Contents of the inv...

AI Technical Summary

Problems solved by technology

However, the traditional cold air impact test bench cannot control the pressure, and the output pressure changes greatly with time, which is not conducive to the data acquisition of the pressure sensor and the post-processing of the test data

At the same time, due to the closed structure of the traditional cold air impact test bench, when the impact test is performed on combustible materials, if the test material is ignited, the pressure of the impact channel will increase sharply, and an explosion may occur, so that the safety of the test personnel cannot be guaranteed.

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