How to use the quick release device

Abstract

The invention provides a pneumatic quick-releasing device. The pneumatic quick-releasing device comprises a main body; a connection part is connected to one end of the main body; the main body is internally provided with a driving mechanism moving in the perpendicular direction; the connecting part is internally provided with a locking piece; the driving mechanism moves in a conical hole in one end of the locking piece downwards or upwards so as to drive the diameter of the other end of the locking piece to be increased or decreased; and the other end of the locking piece locks or releases an inverted conical hole of a lower lifting lug. According to the pneumatic quick-releasing device, when the driving mechanism moves downwards or upwards in the conical hole of the locking piece, the diameter of the other end of the locking piece is made to be increased or decreased, accordingly, the purpose of quickly locking or releasing the lower lifting lug is achieved; the pneumatic quick-releasing device is quick in action response, precise in operation and small in size, and the efficiency of the lifted weight is large; compared with a falling impact test device provided by the prior art, the impact accelerated speed is higher; and the structural design is simple, and using is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of high-acceleration drop impact test, in particular to a method for using a quick-release device. Background technique [0002] At present, in the field of high-acceleration drop impact test technology, the test is usually carried out with the help of existing lifting devices such as bridge cranes for relatively heavy and relatively large test pieces. [0003] During the test, the bridge crane is connected to a quick-release mechanism, and the hook of the mechanism is connected to the rope binding the test piece. After the crane is started to lift to the set height, the quick-release mechanism is operated to let go of the rope and release the test piece. The test piece is made to collide with the anvil table directly below to realize the drop high-acceleration impact test. In addition, the high-acceleration drop impact test can also be performed directly using special drop impact test equipment. [0004] ...

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a pneumatic quick-release device, which has the advantages of compact structure, small size, light weight, simple and convenient operation, safety and reliability, and low cost, and is especially suitable for large size and heavy weight. The high-acceleration drop impact test of the test piece solves the existing problems in the prior art. When the hook of the common quick release mechanism is used to connect the rope of the test piece, the lifting height is low, the test load is low, the center of gravity of the test piece is unstable, The problem of inconvenient hoisting of large-volume test pieces, and overcoming the shortcomings of expensive equipment, high cost, limited lifting height, limited test load, and effective drop impact acceleration level when using special drop impact test equipment for testing

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