Rigidity measuring device for large-size shaft-shaped part under bending and twisting synchronous loading condition

Abstract

The invention provides a rigidity measuring device for a large-size shaft-shaped part under a bending and twisting synchronous loading condition, and belongs to the technical field of mechanical equipment. The device comprises a pedestal, a square steel tube, a T-shaped beam, a torque loading arm and a bending moment loading arm, and the device can be applied to measure the rigidity of the large-size shaft-shaped part, a thin walled tube and an irregular part. The bending moment and torque load can be applied at the same time, so that the bending rigidity of the part can be measured more accurately under a torque effect and the torsion rigidity of the part can be measured more accurately under a bending moment effect.

Description

technical field [0001] The invention relates to a stiffness measuring device under the condition of synchronous bending and torsion loading of a large-size shaft-shaped part, which belongs to the technical field of mechanical equipment. Background technique [0002] The combined load of bending and torsion is the most common loading situation of parts or components in the fields of aerospace, bridge construction, petrochemical industry, construction machinery and so on. Once the materials and components under service conditions fail, it will cause great harm. The prediction of material properties under torsional and bending loads cannot be solely based on its performance test under single torsional or bending loads, but more needs to be tested on its performance under bending and torsion interaction conditions. [0003] Through the search of the existing technical literature, it is found that the stiffness test of parts and components under complex service conditions is sti...

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Problems solved by technology

[0004] In order to solve the problem that the stiffness measurement device in the prior art cannot jointly apply bending load and torsional load, and cannot realize the stiffness measurement of large-size shaft-shaped parts under the condition of combined bending-torsion load, the present invention proposes a large-size shaft-shaped part bending The technical scheme adopted for the stiffness measurement device under the condition of torsional synchronous loading is as follows:

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