One end of the self-weight drop weight testing machine is fixed and the other end is simply supported boundary condition constraint device

Abstract

The invention discloses a constraint device for realizing the boundary conditions of one end fixed and one end simply supported of a self-weight drop weight testing machine, comprising a fixed-end pressure beam member 1, a long screw rod 2 for the fixed-end pressure beam, a hinged end base member 3, a hinged end Plywood bottom plate member 4I, hinge end splint top plate 4II, bearing 5, splint screw 6, rotating shaft 7, hinge end base anchor screw 8, hexagonal bolt 9, nut 10, test piece 11. The fixed boundary condition is the fixed-end pressure beam member, and the specimen is clamped and fixed by the two fixed-end pressure beam members, so as to realize the fixed-end constraint; The top plate, the rotating shaft, the bearing, and the shaft cap form a complete hinge-supported restraint system, so as to better realize the solid-simplified boundary conditions during the impact process. This device is suitable for components of different sizes, can be fixed at any height through bolts and screws, and has a large width range, and can be applied to most test components.

Description

technical field [0001] The invention belongs to the field of component disaster simulation devices, and specifically relates to a restraint device for realizing the boundary condition of one end of a self-weight drop weight tester and one end simply supported, which is applied to a self-weight drop weight tester. Background technique [0002] In recent years, accidental events such as traffic accidents and terrorist attacks have occurred frequently, and the occurrence of such accidents can usually generate huge impact loads on the structure in a short period of time, and the maximum pressure of the impact load on the structure may far exceed the conventional The design bearing capacity, the failure characteristics and mechanical performance of the structure or components at this time are usually different from those under conventional loads, which is undoubtedly a great test for the structure itself. In the process of crane operation in industrial workshops, it is inevitable...

AI Technical Summary

Problems solved by technology

However, in the traditional drop-weight impact test, the moment the specimen is impacted by the drop-weight, it usually causes the specimen to be lifted and detached from the support, making it difficult to better realize the simply supported condition during the impact test.

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