Overload protection device for tension and pressure sensor

Abstract

The invention discloses an overload protection device for a tension and pressure sensor. Compressed spacing rods are connected with a lower action plate to form a rack; an upper spacing plate and the two compressed spacing rods are in clearance fit; the lower end of the upper spacing plate is provided with the tension and pressure sensor; the lower end of the tension and pressure sensor is provided with a tension support; the upper surface of a middle plate of a lower action plate and the lower end surface of the tension and pressure sensor form elastic connection by an upper overload deformation device; the upper surface of the middle plate of the lower action plate and the upper surface of the tension support form elastic connection by a lower overload deformation device; a stretching overload switch is installed on an upper wiring block fixed by stretching spacing nuts; a compressing overload switch is installed on a lower wiring block fixed by the compered spacing rods; and the stretching overload switch, a stretching overload warning light, the compressing overload switch, a compressing overload warning light and a power supply are connected into a ground line. The overload protection device for the tension and pressure sensor has the advantages of simple structure, good mechanical property and long service life.

Description

technical field The invention relates to an overload protection device for a tension and pressure sensor. Background technique At present, strain-type tensile and pressure sensors are widely used in mechanical performance testing systems. The sensor has the characteristics of simple structure, low cost and mature test system technology, so it can be widely used. Each tension pressure sensor is marked with a range when it leaves the factory. During the process of applying a load, if the load exceeds the range of the tension pressure sensor, the elastic body inside the tension pressure sensor will be permanently deformed and damaged, resulting in failure of the test system. Therefore, the load on the tension-pressure sensor must be strictly controlled during use to ensure that the load is within the allowable range of the tension-pressure sensor. However, in actual use, due to reasons such as design and misoperation, it is easy to overload the tension and pressure sensor, re...

AI Technical Summary

Problems solved by technology

However, in actual use, due to design and misoperation, etc., it is easy to overload the tension and pressure sensor, resulting in its damage

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