Device and system for measuring strand spacing based on internet of things

Abstract

The invention discloses a device for measuring strand spacing based on the internet of things. The device comprises: a guide rod, a reference rod, a moving test rod, a rope displacement sensor and a wireless communication unit. The reference rod is fixed at one end of the guide rod. The moving test rod is mounted on the guide rod and movable along the axial direction of the guide rod. The body ofthe rope displacement sensor is fixedly mounted on the reference rod. The reference rod is provided with a small hole at a position corresponding to the rope exit of the rope displacement sensor. Theend of the rope of the rope displacement sensor can pass through the small hole and reach the measurement position of the moving test rod. The measurement position is opposite to the small hole to make the rope vertical. The signal output of the rope displacement sensor is connected to the wireless communication unit. The device for measuring strand spacing based on internet of things can automatically read the measurement data and transmit the measurement data back to the background data processing system for record storage. The measurement efficiency is high, the measurement data is accurate, and the operation can be performed at night.

Description

technical field [0001] The invention relates to the technical field of main cable erection of suspension bridges, in particular to a device and system for measuring distance between cable strands based on the Internet of Things. Background technique [0002] The main cable is the main load-bearing structure of the suspension bridge. Each main cable is composed of hundreds of parallel steel wire strands. These high-strength steel wires are arranged in a regular hexagonal order according to the design. In order to ensure that the relative positional relationship of each steel strand is consistent with the design, it is necessary to measure the relative position between each strand of steel cable and the reference steel cable, and since the plane position of each cable can be fixed by the cable groove of the cable saddle, it is only necessary to measure the position of each strand The height difference between the steel cable and the reference steel cable, and then adjust the r...

AI Technical Summary

Problems solved by technology

Although this method is cheap in cost, it has many disadvantages: first, it cannot ensure that the cross bar of the caliper is in a horizontal position, resulting in the measured relative sag of the two steel cables being larger than the actual value; second, this method requires manual reading, which increases the For the difficulty of high-altitude operation, and the introduction of reading errors; moreover, this method hardly meets the nature of day and night continuous work in engineering, and artificial lighting readings are required when working at night, which is very inconvenient to operate

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