Inspection method of wire rope diameter

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

The diameter of steel wire rope shall be measured on a straight section of no-load steel rope. The methods for measuring the diameter of steel wire rope at home and abroad can be summarized as follows:

When measuring the diameter of the steel wire rope, under the condition of no tension, two diameters shall be measured vertically in different directions at two points at least 1m apart from each other at an appropriate distance (usually m) from the end of the rope. The average value of four measurements shall be taken as the measured diameter of the steel wire rope, and the difference of any two values of four measurements shall be taken as the ellipticity of the steel wire rope In case of dispute, diameter measurement can be carried out when 5% of the 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; The detection range of halogen beam detector is 0-25mm. Both of them can display the detection results with electronic display.