Column force sensor multi-piece strain gauge patch fixture

Abstract

The invention discloses a multi-sheet strain gauge patching clamp of a column type force sensor. The column type force sensor comprises an elastic body, wherein a plurality of sheets of strain gauges are uniformly arranged on a cylindrical surface of an elastic section of the elastic body; the multi-sheet strain gauge patching clamp of the column type force sensor comprises a first inner clamping block, a second inner clamping block, a first outer clamping block and a second outer clamping block which are in an approximately semi-circular arc shape; convex edges on the two sides of the first inner clamping block are correspondingly connected with convex edges on the two sides of the second inner clamping block; convex edges on the two sides of the first outer clamping block are correspondingly connected with convex edges on the two sides of the second outer clamping block, and the outer clamping blocks are mounted outside the first inner clamping block and the second inner clamping block; notches are formed in the middle parts of the two sides of the first inner clamping block and the middle parts of the two sides of the second inner clamping block respectively. According to the multi-sheet strain gauge patching clamp of the column type force sensor, the inner clamping blocks and the outer clamping blocks are matched with one another, so that the strain gauge on the elastic body can be simultaneously patched, simultaneously clamped and simultaneously cured at a high temperature; the production efficiency is remarkably improved and the patching quality and the precision of the column type force sensor are guaranteed.

Description

technical field [0001] The invention relates to a patch fixture for a column force sensor, in particular to a patch fixture for a column force sensor with multiple strain gauges. Background technique [0002] Column force sensor is a commonly used structural form in force sensors, and is widely used in aerospace industry, electric power industry, civil construction and water conservancy engineering industry, metallurgy and chemical industry, bridge and road engineering industry and other high-precision stress testing fields. The requirement for accuracy is getting higher and higher, so strain gauges need to be installed in the four directions of the cylindrical surface of the elastic body of the sensor. [0003] After the strain gauge is pasted on the elastic body with adhesive, a certain positive pressure must be given to the strain gauge with the help of a patch fixture, and the direction of the pressure should be as perpendicular as possible to the plane where the strain ...

AI Technical Summary

Problems solved by technology

Based on the above reasons, two pairs of strain gauges cannot be pressurized at the same time using the traditional patch fixture, so the efficiency of pressurizing the strain gauges and curing at high temperature is low, and it is not conducive to maintaining the consistency of the four strain gauges, reducing the column The accuracy of the force sensor

Images