Device for measuring flexural rigidity of structural member in high-low temperature environments

Abstract

A device for measuring the flexural rigidity of a structural member in the high-low temperature environments comprises a laser measuring set, air floating devices, a lifting device, a moving beam, high-low temperature resistant pulling ropes and the like. The moving beam is arranged on the lifting device in a sleeved mode. The two sets of air floating devices are arranged. Each air floating shaft is fixed to the moving beam through an air floating bearing seat. Each air floating shaft is sleeved with an air floating sleeve. The member to be measured is installed on an installation base of the member to be measured in a high-low temperature box. Each high-low temperature resistant pulling rope vertically penetrates through a through hole in the top of the high-low temperature box and is connected with one air floating sleeve and the member to be measured. The laser measuring set is fixed to the outer side of the high-low temperature box and opposite to an observation window in the side face of the high-low temperature box in position. According to the device for measuring the flexural rigidity of the structural member in the high-low temperature environments, force is exerted through the high-low temperature resistant pulling ropes, the arm of force is obtained through the air floating devices, the direction of the acting force is guaranteed through the air floating devices, the tension of each rope is measured through a force sensor, angular deformation is obtained through the laser measuring set, all data are transmitted through a wireless data transmission module, and therefore a bending moment-angular deformation curve of the flexural rigidity of the member to be measured is accurately obtained.

Description

technical field [0001] The invention relates to the field of bending stiffness testing of components under high and low temperature environmental conditions. Background technique [0002] Stiffness tests on structural parts are usually carried out at room temperature unless there are special requirements. Existing stiffness tests have many methods and structures according to different test requirements and application fields, but for components in high and low temperature environments Stiffness test, due to the deformation of test fixtures and loading mechanisms in high and low temperature environments, which will affect the loading of force, the measurement of moments and angles, and because of the overheating and cooling of the environment, most precision instruments or equipment for testing will It cannot be used normally and affects the testing work. [0003] At present, the bending stiffness test under high and low temperature is carried out in a high and low temperatu...

AI Technical Summary

Problems solved by technology

However, for the stiffness test at high and low temperatures, the laser emitter cannot be located on the component, and the deformation of the machine base must also be taken into account during the test

The patent application number is 201110370253.4 for "three-dimensional deformation measurement device of the tested part in the high and low temperature box" and the patent application number is 201110370271.2 for the "high precision measurement system for three-dimensional small deformation of the mechanical device in the high and low temperature box" to provide a high and low temperature box The measurement method of three-dimensional deformation of components, but this kind of method can only follow the three-dimensional displacement of a certain point, and the stiffness test needs to obtain accurate loading force and the size of the moment arm

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