Drop hammer impact experiment device and method

Abstract

The invention relates to the technical field of drop hammer impact experiments, in particular to a drop hammer impact experiment device and method.The drop hammer impact experiment device comprises a hammer body and a speed measuring assembly, the speed measuring assembly comprises a signal transmitter and a signal receiver, the signal receiver extends in the moving direction of the hammer body, the signal transmitter is arranged on the hammer body, and the signal receiver is arranged on the hammer body. And the signal receiver is arranged opposite to the signal receiver. The accurate impact rate and energy of the hammer body impacting the test piece can be obtained, and inaccurate energy calculation caused by the fact that other energy losses generated in the falling process of the hammer body cannot be calculated is avoided. The invention aims to more accurately measure the instant speed of a drop hammer in contact with a test piece, ensure that an accurate speed value can be obtained in each experiment, reduce the failure rate of the experiment and improve the accuracy and efficiency of the experiment. The impact energy detection device is simple in structure and convenient to install, operate and use, and the accuracy of impact energy detection and the testability of the instant speed are improved.

Description

technical field [0001] The invention relates to the technical field of drop weight impact test, in particular to a drop weight impact test device and method. Background technique [0002] The study of impact energy is very important to the mining industry. If the accurate value of impact energy can be obtained, energy can be absorbed by energy buffering and absorbing devices to avoid mine disasters. In the research process of impact experiment, energy is the most important reference data in the experiment. In the drop hammer impact experiment, the calculation of energy is usually calculated by mass and height; the acquisition of impact velocity is mainly obtained by the speed measuring instrument, which mainly transmits signals at one end and receives signals at the other end. When the hammer body passes through the signal area, it receives The signal section will not receive the signal temporarily, and the impact rate can be obtained according to the length of the hammer b...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a drop hammer impact test device and method, which are used to solve the defect of poor accuracy of the instantaneous velocity and energy detection and calculation of the drop hammer impact test piece in the drop hammer impact test in the prior art, and realize the acquisition of the hammer body impact test. Accurate impact velocity and energy of the parts, to avoid inaccurate energy calculations caused by other energy losses during the falling process of the hammer body cannot be calculated

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