US 12,264,048 B2
Cable drum for a cable winch and method for production thereof
Ilaka Mupende, Neu-Ulm (DE); Norbert Hausladen, Biberach an der Riss (DE); and Bernd Hemel, 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 Jul. 16, 2021, as Appl. No. 17/378,500.
Application 17/378,500 is a continuation of application No. PCT/EP2019/085385, filed on Dec. 16, 2019.
Claims priority of application No. 10 2019 101 046.2 (DE), filed on Jan. 16, 2019.
Prior Publication US 2021/0380378 A1, Dec. 9, 2021
Int. Cl. B66D 1/30 (2006.01)
CPC B66D 1/30 (2013.01) 27 Claims
OG exemplary drawing
 
1. A hoist drum for a hoist winch of a rope drive comprising:
a drum jacket; and
two guard plates adjacent to the drum jacket at end sides,
wherein the drum jacket and the two guard plates comprise a fiber reinforced composite material,
wherein the drum jacket comprises two jacket walls and a longitudinal axis, wherein the drum jacket is reinforced by stiffening ribs, a foam core between the two jacket walls, and the fiber reinforced composite material, wherein the stiffening ribs extend between the two jacket walls and connect the two jacket walls to one another, wherein the stiffening ribs are formed in the foam core between the two jacket walls, wherein the stiffening ribs extend axially parallel to the longitudinal axis and/or are concentric and mutually spaced apart from the longitudinal axis, wherein at least one of the two jacket walls comprises the fiber reinforced composite material such that a main fiber direction of the fiber reinforced composite material of the at least one of the two jacket walls extends helically around the longitudinal axis,
wherein each of the two guard plates comprises a multi-shell structure comprising two guard plate walls, wherein each of the two guard plates is reinforced by spiral stiffening ribs, a foam core between the two guard plate walls, and the fiber reinforced composite material, wherein the spiral stiffening ribs extend between the two guard plate walls of each of the two guard plates and connect the two guard plate walls of each of the two guard plates to one another, wherein the spiral stiffening ribs between the two guard plate walls of each of the two guard plates are integrally formed with the two guard plate walls of each of the two guard plates in a wet-on-wet manner, wherein the two guard plate walls of each of the two guard plates and the spiral stiffening ribs comprise the fiber reinforced composite material,
wherein the two guard plates are formed separately from the drum jacket and are fastened to the drum jacket by pull rods that extend through the total length of the drum jacket and through the two guard plates, wherein the pull rods extend through the drum jacket and penetrate the foam core of the drum jacket,
wherein the pull rods penetrate the foam core of at least one of the two guard plates.