公开(公告)号：US11732410B2

公开(公告)日：2023-08-22

申请号：US17133174

申请日：2020-12-23

Applicant: Liebherr-Components Biberach GmbH

Inventor： Ilaka Mupende ,  Ulrich Hamme ,  Felix Lukasch

IPC: D07B1/14 ,  D07B1/02 ,  B66C15/00 ,  D07B1/16

CPC classification number: D07B1/145 ,  B66C15/00 ,  D07B1/025 ,  D07B1/162 ,  D07B2201/102 ,  D07B2205/2014

Abstract: The present invention generally relates to the detection of the discard state of high-strength fiber ropes. The invention relates to a device for detecting the discard state of high-strength fiber ropes for various operating conditions, wherein a rope core of the fiber rope is sheathed with a rope sheath which is intended to wear more quickly than the rope core, comprising an optical detection device for detecting the rope surface and/or a load spectrum counter for detecting the load cycles to which the fiber rope is subjected, and on the other hand to a lifting gear such as a crane comprising such a device. According to the invention, there is provided a detection device for detecting the light absorption coefficient and/or the degree of reflection of the rope sheath and an adaptation device for adapting the algorithm, by means of which the discard state is determined, in dependence on the detected light absorption coefficient and/or the detected degree of reflection.

公开(公告)号：US10822742B2

公开(公告)日：2020-11-03

申请号：US15957459

申请日：2018-04-19

Applicant: Liebherr-Components Biberach GmbH

Inventor： Ilaka Mupende ,  Ulrich Hamme ,  Hans-Dieter Willim

IPC: G01N21/27 ,  G01N21/47 ,  D07B1/14 ,  B66C15/00 ,  B66D1/54 ,  B66B7/12 ,  D07B1/04 ,  G01N21/952 ,  D07B1/02 ,  B66C23/16

Abstract: The present invention relates to an apparatus for recognizing the replacement state of a high-strength fiber rope for lifting gear such as cranes as well as to a lifting gear such as a crane in which such a high-strength fiber rope is installed. It is the underlying object of the present invention to provide an improved apparatus for determining the replacement state of a high-strength fiber rope and to provide improved lifting gear having such a fiber rope that avoid the disadvantages of the prior art and further develop the latter in an advantageous manner. To be able to more easily determine the respective degree of damage of the jacket and thus the closeness to the imminent replacement state of the rope, the apparatus is provided with a reference damage memory in which reference representations of the rope with different degrees of damage to the jacket of the rope are contained to allow for an optical comparison of an actual image of the rope with the stored reference representations and thus, determination of the replacement state.