Inspection method for diameter of steel wire rope

The diameter of the steel wire rope shall be measured with the corresponding caliper, and the jaw distance of the caliper shall be sufficient to span two adjacent rope strands. At present, vernier caliper is used to measure the diameter of steel wire rope at home and abroad.

The diameter of steel wire rope shall be measured on a section of linear unloaded steel wire rope. The methods for measuring the diameter of steel wire rope at home and abroad can be roughly summarized as follows:

The diameter of steel wire rope shall be measured vertically in different directions at two points at least 1m away from each other at a proper distance (usually m) from the rope end without tension. The average value of four measurements shall be taken as the measured diameter of the steel wire rope, and the difference between any two values of four measurements shall be taken as the ellipticity of the steel wire rope In case of dispute, the diameter measurement can be carried out when 5% of its small breaking force is applied to the steel wire rope (10% of the breaking force can be applied to the elevator steel wire rope if necessary).

At present, a new type of steel wire rope diameter measuring instrument has been developed, which can measure the diameter without contacting the measured object. The detection range of the laser beam detector is 1-80mm; Using halogen beam detector, the detection range is 0-25mm, and both of them can display the detection results with electronic display.