Device for measuring mechanical property of test piece

Abstract

The invention provides a device for measuring the mechanical property of a test piece. The device comprises a base, a first supporting member and a second supporting member, wherein the first supporting member and the second supporting member are connected to the base and are separated transversely; the first supporting member comprises a first swing rod and a first fixture; the first swing rod is rotationally connected to the base through a first swing rod rotating shaft and is restrained to only rotate in a rotating plane perpendicular to the first swing rod rotating shaft; the first fixture is used for clamping the test piece in a first clamping position of the test piece, is rotationally connected to the first swing rod through a first fixture rotating shaft parallel to the first swing rod rotating shaft, and is restrained to only rotate in a plane parallel to the rotating plane or coplanar with the rotating plane; the second supporting member has the same structure with the first supporting member. According to the device, displacement between the test piece and two supporting points of a fixing device can be avoided in an impacting process, the measurement process is more stable and more accurate and is closer to the deformation rate and the real stressed condition of the test piece in practice, and the state stability of the whole measurement system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of mechanical property measuring equipment, in particular to a device for measuring the mechanical properties of a test piece. Background technique [0002] Three-point bending test equipment is commonly used in some professional laboratories of mechanical parts and engineering structures. This equipment has the advantages of convenient installation and debugging, simple operation and high accuracy of test data, which can greatly improve the accuracy and reliability of the test. . In the three-point bending test, the test device and test method are an important guarantee for obtaining accurate measurement data of the specimen. [0003] At present, there are many mechanical testing methods and devices for three-point bending, but different test devices are often required for test pieces of different shapes, or test pieces of the same shape and different sizes. And for different tests, there is no correspond...

AI Technical Summary

Problems solved by technology

[0006] An object of the present invention is to provide a device for measuring the mechanical properties of the test piece, which solves the problem that the relative movement between the test piece and the support point is easy to occur during the measurement of the test piece by the three-point bending method in the prior art, so that the stability Poor, resulting in the fact that the force of the test piece does not match the actual problem

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