Graphite material static Poisson's ratio measuring equipment

Abstract

The invention relates to graphite material static Poisson's ratio measuring equipment which comprises a tensile testing machine, a rotating assembly, a feeding assembly, a fixing assembly and a clamping assembly. The rotating assembly comprises a rotating frame; the cleaning assembly comprises two groups of sliding seats symmetrically arranged on the rotating frame in a sliding manner, a driving assembly a for driving the sliding seats to move, two groups of clamping blocks arranged on the sliding seats in a sliding manner, positioning assemblies and cleaning assemblies arranged on the clamping blocks in a staggered manner, and limiting assemblies for driving the positioning assemblies and the cleaning assemblies to alternately protrude out of the planes of the clamping blocks; the fixing assembly comprises two sets of sliding frames arranged on the rotating frame in a sliding mode, two sets of clamping jaws elastically hinged to the ends of the sliding frames and a driving assembly c which drives the two sets of clamping jaws to rotate synchronously and is in power connection with the clamping blocks. And the clamping assembly comprises a mounting seat which can be in butt joint with the two groups of clamping blocks, a fixing plate which is matched with the mounting frame to fix the two groups of clamping blocks, and a fastening assembly for fastening the mounting seat and the fixing plate. The graphite test piece can be quickly mounted.

Description

technical field [0001] The invention relates to the field of graphite material detection equipment, in particular to a graphite material static Poisson's ratio measurement equipment. Background technique [0002] The various properties exhibited by graphite materials under the action of force are also called mechanical properties. The graphite body deforms under the action of external force. If the deformation does not exceed the elastic limit, the deformation can be restored to its original shape after the external force is removed. This property is called elasticity, and the parameters indicating the elasticity of graphite include elastic modulus and Poisson's ratio. [0003] The Chinese patent application number is CN201810896206.5, a dynamic tensile test fixture and test method for a countersunk sheet-shaped test piece, including two fixtures with the same structure that respectively fix the two ends of the test piece and are arranged symmetrically up and down; the fixtu...

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Problems solved by technology

[0005] In view of the above problems, the present invention provides a static Poisson's ratio measuring device for graphite materials, which places the graphite specimen in the clamping area formed by the clamping block, and then cleans the components during the movement of the turret rotating the clamping block. Clean the graphite specimen, and then the clamping block drives two sets of jaws to clamp the graphite specimen through the driving component b, and then under the action of the limit component, the positioning component contacts the end of the graphite specimen, and finally rotates The frame rotates to make the two groups of clamping blocks cooperate with the clamping components, which solves the technical problems of low clamping efficiency and low clamping accuracy of the test piece in the prior art

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