Magnetoelastic cable force sensor and steel cable force measuring system

Abstract

The invention discloses a magnetoelastic cable force sensor and a steel cable force measuring system. The magnetoelastic cable force sensor comprises a fixed support and a sensor module, and is characterized in that the sensor module is composed of two portions; when the two portions form the sensor module, the sensor module is coated at the external part of a steel cable; the sensor module comprises a shell, a copper piece coil and a detection coil; the internal part of the shell is a hollow cavity, and the copper piece coil and the detection coil are installed in the hollow cavity; the detection coil surrounds the external part of the steel cable, and the copper piece coil surrounds the external part of the detection coil; and the fixed support is installed on the steel cable and located at two sides of the sensor module so as to fix the sensor module on the steel cable. The magnetoelastic cable force sensor and the steel cable force measuring system disclosed by the invention have the advantages of simple and convenient installation and ability of applicable to steel cables with various shapes while ensuring high-precision measurement.

Description

technical field [0001] The invention relates to the field of non-destructive testing, in particular to a magnetic elastic cable force sensor and a steel cable force measuring system. Background technique [0002] Due to the outstanding advantages of high flexibility, high tensile strength, and long load transmission distance, steel cables have been widely used in fields such as long-span bridges, large-scale building structures, and traction machinery, including cable-stayed cables, passenger ropeways, steel wire ropes for elevators, and All kinds of lifting equipment slings and other forms. During the use of the steel cable, damage will accumulate due to the influence of atmospheric environment corrosion, mechanical friction or fatigue damage; at the same time, due to the uncertainty of the load, the steel cable will inevitably suffer various damages, resulting in the actual load of the steel cable. The capacity is reduced, so that the steel cable may suddenly break due to...

AI Technical Summary

Problems solved by technology

For the steel cables of the built bridges, if the sleeve structure is adopted, it can only be wound on site, but it is difficult to ensure the consistency of the coils wound in this way, and it is difficult to carry out accurate calibration, resulting in large measurement results At the same time, the on-site winding workload is large and the operation is inconvenient, which not only increases the difficulty of the operation, but also requires high technical requirements for the workers.

[0006] The magnetic elastic cable force sensor with a bypass structure uses a U-shaped magnetic yoke. The excitation coil does not need to be wound on site. The magnetic flux passes through the magnetic yoke and enters the steel cable, which can realize the magnetization of the steel cable. However, the detection coil of this sensor still needs to be wound. on steel cables

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