Patent ID: 9335318
Filing Date: 2016-05-10
CPC Classification: B66C,B66D,G01N

Claim Text:
1. An apparatus for recognizing the replacement state of a high-strength fiber rope in use at lifting gear, in particular a crane, comprising: a detection device for detecting at least one rope parameter; and an evaluation device for evaluating the rope parameter and for providing a discard signal in dependence on the rope parameter evaluation, wherein the detection device has a transverse compressive stiffness determiner and/or a cross-sectional determiner for determining the transverse compressive stiffness and/or cross-sectional area and/or cross-sectional shape of the rope, and wherein the evaluation device evaluates the discard signal in dependence on the determined transverse compressive stiffness and/or cross-sectional area and/or cross-sectional area of the rope; wherein the evaluation device monitors the transverse compressive stiffness and/or the cross-sectional area and/or cross-sectional shape of the rope for changes and also provides the discard signal on an exceeding of a predefined change and/or compares the determined transverse compressive stiffness and/or the cross-sectional area with a predefined limit value for the transverse compressive stiffness and/or cross sectional area and provides the discard signal on an exceeding/falling below the limit value; and wherein the transverse compressive stiffness determiner and/or the cross-section determiner comprises a detector that comprises at least one elastically preloadable clamper pair, wherein the clamper pair comprises clamping jaws or rope rollers configured to be pressed against the fiber rope and movably suspended transversely to the longitudinal direction of the rope and a distance measurer for measuring the distance of the clamper pair from one another.