Strain-gauge connecting fixing device for test-piece elasticity modulus test

Abstract

The invention discloses a strain-gauge connecting fixing device for a test-piece elasticity modulus test. Multiple wiring terminals are fixedly arranged at fixed positions of a collet, and the signaloutput ends of all wiring terminals are connected with the signal input ends of external testers through wires. According to the strain-gauge connecting fixing device for the test-piece elasticity modulus test, a connecting mode adopts pressure-embedded wires, and compared with welding wires, the pressure-embedded wires are simpler and more convenient and capable of saving more time, and connection can be completed in one minute; the problem that the wires are arranged disorderly and pull strain gauges is completely solved; 8 wires are fixedly arranged in pairs, and convenience is provided forfinishing of later instrument-test output numerical values. Connection operation time is greatly shortened, the strain gauges can be connected with the wires only by pressing buckles through one step, the whole process can be completed in one minute, and testers do not need the welding technology and can complete the whole process. The problem that mutual interference exists between the strain gauges and the connecting wires is solved, and it is avoided that due to the dead-weight problem of the wires, the test process is interfered, and the strain gauges are pulled bad. According to the strain-gauge connecting fixing device for the test-piece elasticity modulus test, it can be completely guaranteed that the test process is not influenced by external factors.

Description

technical field [0001] The invention belongs to the field of civil engineering, in particular to a strain gauge connecting and fixing device for elastic modulus testing of specimens. Background technique [0002] The key link in the elastic modulus test of rock, concrete and other specimens is to measure the transverse and vertical stress and strain values ​​of the specimen. The most tedious process in the test preparation stage is attaching strain gauges to the test piece, then connecting the strain gauges with wires, and then connecting the wires to the tester. The traditional way of connecting strain gauges and wires is welding. Since the strain gauge connecting wires are very thin, at least 8 wires must be connected to each specimen. Using welding to operate is time-consuming and inefficient. Welding wires often requires more than 2 wires. hours to complete. In addition, the welding operation also requires certain technology. The more important problem is that there i...

AI Technical Summary

Problems solved by technology

It solves many problems such as the long time-consuming connection of strain gauges and wires in the existing test device, the high requirements for welding technology of test personnel, and the strain gauges being easily torn if the wires are not fixed during the test.

Images