TEST BENCH FOR TESTING IMPACT DEVICES Russian patent published in 2011 - IPC G01M7/08 

FIELD: machine building.

SUBSTANCE: test bench consists of rigid base with stop, and of bed with tested impact device stationary mounted on it and with energy absorber containing hollow step-like piston moving along axis. Two sealed chambers located one above the other are installed in the case of the power absorber. An upper one is partially filled with liquid and compressed gas through channels in the case; it is connected with a lower chamber fully filled with liquid through a circular throttle split - continuously and through a back valve - periodically. The step-like piston moves in this chamber along axis. One end of the piston is constantly inside the chamber, while another one projects outside through a bore in a bottom of the chamber and is directed into a side of a tested device. A needle is secured in a threaded hole of an opposite bottom. Together with this bottom it forms the said throttle split.

EFFECT: simplified design and reduced weight of device.

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