Bolt axial force measuring method self-adaptive to cable length

By integrating an ultrasonic transducer and a temperature-sensing resistor into an adaptive cable length method, the problems of manual cable length measurement error and synchronous temperature acquisition in existing technologies are solved, achieving high-precision and efficient bolt axial force measurement, which is suitable for complex environments such as wind turbines.

CN121521337APending Publication Date: 2026-02-13BEIJING BOYANG HUIYUAN POWER TECH CO LTD
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Patent Information

Application Number
CN202610035551.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-12
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

In existing ultrasonic bolt axial force measurement technology, the cable length needs to be measured and manually entered, which is prone to errors. Furthermore, it is difficult to collect bolt temperature simultaneously, resulting in insufficient measurement accuracy and efficiency, which cannot meet the monitoring needs of complex environments such as wind turbines.

Method used

The bolt axial force measurement method adopts an adaptive cable length. By integrating an ultrasonic transducer, a temperature sensing resistor, and a ceramic resonator, it realizes the integrated function of ultrasonic transduction and reception, temperature sensing and enhancement amplification. It uses a three-core cable and a measurement terminal to perform time-division multiplexing of cable length, temperature and ultrasonic data acquisition, automatically acquire data and calculate bolt axial force value.

Benefits of technology

It reduces the workload and errors caused by manual cable length measurement, simultaneously collects bolt temperature, improves the accuracy and efficiency of bolt axial force measurement, adapts to the measurement needs of different cable lengths, and meets the monitoring requirements in complex environments.

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Abstract

The invention discloses a cable length self-adaptive bolt axial force measurement method, and relates to the technical field of bolt axial force measurement, and a system comprises a target ultrasonic transducer, a measurement terminal and an upper computer, the target ultrasonic transducer comprises an ultrasonic transduction sheet used for transmitting and receiving ultrasonic waves, a temperature measuring resistor used for sensing the temperature of a target bolt to be measured, and a ceramic resonance sheet used for enhancing and amplifying ultrasonic signals; the measurement terminal performs time-sharing execution by switching the connection combination of each core wire in the target three-core cable: measuring the resistance of the target three-core cable to obtain cable length data; measuring the loop resistance including the temperature measuring resistor to obtain current bolt temperature data; the ultrasonic transduction piece is excited with low energy, and returned echo signals are collected to obtain ultrasonic data; and the upper computer obtains the current axial force value of the target to-be-measured bolt according to the cable length data, the current bolt temperature data and the ultrasonic data. By implementing the technical scheme, the effect of improving the measurement precision and efficiency is achieved.
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