Wire rope lay pitch on-line detection device and method

Abstract

The invention relates to a wire rope lay pitch on-line detection device and method. The wire rope lay pitch on-line detection device comprises a wire rope lay pitch detection sensor and a data collector. The wire rope lay pitch detection sensor comprises eddy current displacement sensors, a signal conditioning circuit board, a housing and a handle, wherein the number of the eddy current displacement sensors is two, and the two eddy current displacement sensors are arranged on two ends in the housing; the signal conditioning circuit board is arranged on the middle part in the housing; and the handle is arranged on the housing. The data collector is connected with the wire rope lay pitch detection sensor through a data cable. The front surface of the data collector is provided with a display screen and buttons. The display screen is arranged above the buttons. The data collector is internally provided with a CPU microprocessor, a power supply and an A / D conversion circuit. The CPU microprocessor is connected with the A / D conversion circuit. The wire rope lay pitch on-line detection device and method realize non-contact dynamic on-line measurement of a wire rope lay pitch, the detection requirements are met, and the wire rope lay pitch on-line detection device can be conveniently carried to a site for usage.

Description

technical field [0001] The invention relates to an on-line detection device and method for the lay length of a steel wire rope, which is especially suitable for real-time detection of the change of the lay length of a steel wire rope when equipment such as a hoist or winch is hoisted or pulled, and belongs to the technical field of equipment detection and safety. Background technique [0002] The main load-bearing element of the mine hoist is the steel wire rope, which will bear various loads during the working process, such as tension, bending, contact stress and dynamic load. Studies have shown that as the well depth increases, the torsional stress increases. When the well depth exceeds 800-900 meters, torsion is the main cause of wire rope damage. The twisting of the wire rope causes the lay length to vary along the length of the wire rope. By measuring the lay length of the wire rope, you can know the size of the torsional stress in the wire rope. [0003] A method fo...

AI Technical Summary

Problems solved by technology

[0005] However, the current detection methods for wire rope lay length cannot realize non-contact real-time detection of wire rope lay length, and cannot meet the requirements of torsional stress analysis

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