A kind of thin rod two-way internal force measurement sensor and calibration method

Abstract

The invention discloses a thin-rod two-way internal force measuring sensor, which comprises two same symmetrically arranged splints, the two splints are fixed together back to back, the distance between the two splints is adjustable, and a gap is left between the two splints; The back of each splint is provided with a draw-in groove and a groove, the draw-in groove and the groove are in a straight line, the draw-in groove is adapted to a thin rod, and the thin rod is stuck in the draw-in groove and passes through the groove but not in contact with the groove; the front of each splint is provided with a pressure measurement unit, and the position of the pressure measurement unit is opposite to the slot; each splint is also provided with a tension and pressure measurement hole at the position opposite to the groove. A tension pressure measurement device is arranged on the inner wall of the tension pressure measurement hole. By ensuring that the clamping force of the thin rod remains unchanged, the pressure and tension on the thin rod in the axial direction are measured from multiple angles, and finally reacted into the relationship between force and voltage. After the actual use, just read The corresponding voltage can reflect the size of the internal force of the thin rod under test.

Description

technical field [0001] The invention relates to the field of non-destructive testing of force, in particular to a sensor and a calibration method suitable for testing internal force of thin rods. Background technique [0002] In modern engineering, it is necessary to use a large number of rods to form the frame of the equipment. This structure has the advantages of stability and light weight. The tension and pressure received are detected to determine the force value of the rod in the equipment. In order to accurately understand the actual state of the rod in the equipment, it is necessary to select appropriate measuring equipment and measuring methods. [0003] Today, the internal force measurement methods used in engineering mainly include (1) strain gauge method; (2) magnetic flux method; (3) frequency method. In the strain gauge method, strain gauges are pasted on the rods to be measured. This method needs to paste strain gauges on each rod, which requires a lot of man...

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved: Aiming at the deficiencies of the existing technology, the present invention proposes a thin-rod bidirectional internal force detection sensor and a calibration method to solve the problem that various rod internal force measurement methods in the prior art cannot simultaneously meet the requirements of non-destructive measurement, high precision and Technical issues with high stability and wide versatility

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