DEVICE FOR DETECTING THE REPLACEMENT STATE OF WEAR OF A HIGH-STRENGTH FIBER ROPE DURING USE IN LIFTING GEAR

摘要

The present invention relates generally to hoists such as cranes which instead of steel wire ropes use high-strength fibre ropes. The invention relates in particular to an arrangement for detecting the discard state of a high-strength fibre rope when used on such hoists, with a means for detecting at least one rope parameter and an evaluation unit for evaluating the rope parameter, and providing a discard signal depending upon the evaluation of the rope parameters. According to the invention, the detection means comprises torsional stiffness detection means to determine the torsional stiffness of the rope, whereby the evaluation unit provides the discard signal depending on the determined torsional stiffness of the rope.

主权项

1. An arrangement for detecting a discard state of a high-strength fiber rope used on hoists, comprising:
detecting device to detect at least one rope parameter and an evaluation unit for evaluating the at least one rope parameter and providing a discard signal depending on the evaluation of the rope parameter, wherein the evaluation unit comprises a torsional stiffness determination device for determining the torsional stiffness of the rope, and that the evaluation unit provides the discard signal depending on the determined torsional stiffness of the rope.