Desk-type small Twin-shaft machinery loading device

Abstract

A table type small size two-axle mechanical loading unit refers to mechanical bidirectional loading unit to anisotropic material. Said unit includes assembling frame and loading transmission system, wherein said loading kinematic system including horizontal direction and vertical direction loading unit. Said unit utilizes inner and intermediate suspend framed self-balancing feedback system to realize homogeneous bidirectional field of load in cross specimen, avoiding specimen centre offset and got back to loading unit central undulation in experiment process, thereby obtaining material physical mechanics property in bidirectional field of load affect, reducing consistency requirement to sensing device and hardness to specimen held regulation, raising work efficiency. Said invention has miniaturization property, simple and convenient processing, low cost and easy to realize.

Description

technical field [0001] The invention relates to an experimental loading device, in particular to a mechanical loading device for applying bidirectional loads to anisotropic materials, and belongs to the technical fields of engineering materials, physical properties, structural deformation and mechanical experiments. Background technique [0002] For anisotropic materials, the general uniaxial tensile test can no longer truly reflect the physical and mechanical properties of the material. It is necessary to study the mechanical behavior of the material when it is subjected to a uniform load field in two directions perpendicular to each other. The obtained double The axial physical properties are of great significance for the processing and application of materials and the development of new materials. [0003] At present, from the perspective of the realization of the bidirectional load field, there are mainly two methods. One is to create a bidirectional stress field inside...

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Problems solved by technology

[0005] However, in order to ensure that the specimen is always in a pure double-pull state, there are high requirements for the sensitivity of the feedback system of the sensing device, performance consistency and the loading rate of the stepper motor, and there must be a gap between the signal feedback and the adjustment of the loading rate. The time error makes it easy for the center of the test piece to deviate and return to the center of the loading device during the whole experiment, which also increases the difficulty of clamping and adjusting the test piece.

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