Structure bending moment measuring device under pure bending condition

Abstract

The invention discloses a structure bending moment measuring device under a pure bending condition, and the structure bending moment measuring device is suitable for pure bending loading and bending moment measuring of mechanical parts. The structure bending moment measuring device is mainly composed of two sets of same torque measuring devices, a guide rail and a base, wherein the two sets of torque measuring device are the same in assemblies, and each torque measuring device comprises a rotating shaft, a driving motor, a speed reducer, a torque sensor, an adjustable clamp, a fixing frame, abase, an angle control panel, a jackscrew and a buckle. And the driving motor provides power with controllable size and stable operation for the rotating shaft. The speed reducer, the torque sensor and the adjustable clamp transmit motor power to the two ends of a to-be-tested piece, and pure bending is achieved. According to the device, a loading system and a measuring system are integrated together, so that bending moment at two ends of the test piece is continuously and accurately acquired while pure bending loading of the test piece is realized. Meanwhile, the device is simple to operate and suitable for test pieces of any configuration. The device has certain theoretical significance and practical application value.

Description

Technical field [0001] The invention belongs to the field of mechanical performance experimental devices of mechanical structures. Suitable for space deployable structures in aerospace vehicles. Background technique [0002] The space expandable structure is a brand-new aerospace structure product, which has the characteristics of high reliability and long life, and is the core device for the deployment of solar panels. Including a flexible hinge with spring structure, it is a new type of deployable structure, the core component is a spring unit, a thin-walled cylindrical shell structure, it can use the elastic strain energy accumulated during folding to realize the automatic expansion of the structure. No other power devices are needed. Because of its light weight, high deployment reliability and automatic locking, spring hinges are widely used in spatial deployment structures. [0003] For the space-expandable structure of the hinge with spring, it is very important to study t...

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Problems solved by technology

[0004] This invention mainly aims at the problems of inaccurate load application, discontinuous measurement of bending moment and single measurable structure in the process of measuring bending moment of pure bending structure, and designs a new type of measuring device for bending moment of structure. Continuous bending moment measurement under bending conditions

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