System and method for monitoring stress on bolts

Abstract

The invention discloses a system and a method for monitoring stress on bolts, and relates to the field of data monitoring. The system for monitoring the stress on the bolts comprises a strain sensor assembly, a temperature sensor, a testing unit and a processing unit. The strain sensor assembly and the temperature sensor can be arranged on the bolts; the testing unit is connected with the strain sensor assembly and the temperature sensor, can acquire strain parameters of the bolts by the aid of the strain sensor assembly and can acquire environmental temperatures of the bolts by the aid of the temperature sensor; strain errors due to temperature variation can be corrected by the processing unit on the basis of the environmental temperatures, so that actual strain parameters of the bolts can be obtained. The system and the method have the advantage that the bolt stress monitoring accuracy can be improved.

Description

technical field [0001] The invention relates to the field of data monitoring, in particular to a bolt force monitoring system and a monitoring method. Background technique [0002] A bolt is a connector applied to a mechanical device, often used to connect two parts with through holes. Bolts play an indispensable role in daily life and industrial production. In some large mechanical devices, many structural parts need to be connected by bolts. [0003] The working environment of some mechanical devices is often complex and harsh. The bolts in these mechanical devices working in harsh working environments have to bear both alternating loads and environmental corrosion stress, especially the bolts used to connect large parts. Under the repeated action of variable load and environmental stress, fatigue will occur, and even cracks will occur. The continuous expansion of cracks will cause the bolts to break, which will bring serious safety risks to the bolted components and the ...

AI Technical Summary

Problems solved by technology

[0003] Among them, the working environment of some mechanical devices is often complicated and harsh. The bolts in these mechanical devices working in harsh working environments must bear both alternating loads and environmental corrosion stress, especially for bolts used to connect large parts in alternating loads. Under the repeated action of variable load and environmental stress, fatigue will occur, and even cracks will appear. The continuous expansion of cracks will cause the bolt to break, which will bring serious safety risks to the bolted parts and the entire mechanical device.

At this stage, the stress parameters of the bolts can be collected, but when the temperature of the working environment of the mechanical device using the bolts changes greatly, the collected stress parameters will have a large deviation, which reduces the accuracy of monitoring the bolt force Spend

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