US 11,732,410 B2
Device for adjusting the discard state detection of high-strength fiber ropes and lifting gear comprising such a device
Ilaka Mupende, Neu-Ulm (DE); Ulrich Hamme, Ehingen (DE); and Felix Lukasch, Biberach an der Riss (DE)
Assigned to Liebherr-Components Biberach GmbH, Biberach an der Riss (DE)
Filed by Liebherr-Components Biberach GmbH, Biberach an der Riss (DE)
Filed on Dec. 23, 2020, as Appl. No. 17/133,174.
Application 17/133,174 is a continuation of application No. PCT/EP2019/067356, filed on Jun. 28, 2019.
Claims priority of application No. 10 2018 115 662.6 (DE), filed on Jun. 28, 2018; and application No. 10 2018 123 758.8 (DE), filed on Aug. 26, 2018.
Prior Publication US 2021/0189645 A1, Jun. 24, 2021
Int. Cl. D07B 1/14 (2006.01); D07B 1/02 (2006.01); B66C 15/00 (2006.01); D07B 1/16 (2006.01)
CPC D07B 1/145 (2013.01) [B66C 15/00 (2013.01); D07B 1/025 (2013.01); D07B 1/162 (2013.01); D07B 2201/102 (2013.01); D07B 2205/2014 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A device for determining a discard state of a high-strength fiber rope having a rope core comprising high-strength plastic fibers or strands and a rope sheath surrounding the rope core, comprising:
an optical detector and/or a load spectrum counter, wherein a damage image of the rope sheath is detectable by the optical detector, wherein load cycles associated with the high-strength fiber rope are countable by the load spectrum counter;
a detector, wherein a light absorption coefficient and/or a degree of reflection of the rope sheath is detectable by the detector; and
an adaptor, wherein the discard state is determinable by an algorithm, wherein the algorithm is adaptable by the adapter based on a detected light absorption coefficient and/or a detected degree of reflection, wherein a critical number of load cycles at which a discard state signal is output is adjustable by the adaptor in dependence on the detected light absorption coefficient and/or the detected degree of reflection such that at a higher degree of light absorption the critical number of load cycles is set lower than at a comparatively lower light absorption coefficient.