Line guiding system for at least one supply line which can be coiled and uncoiled and rotary guide therefor

Patent metadata

Field	Value
Publication number	US-11235947-B2
Application number	US-201716095331-A
Country	US
Kind code	B2
Filing date	Apr 20, 2017
Priority date	Apr 20, 2016
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

The proposed line guiding system for at least one heavy and/or rigid line, for example a power cable for shore-side power supply for a ship (alternative maritime power), has a winding device which is rotatable about an axis of rotation for coiling and uncoiling the line and a rotary guide for the line from a first point to a relatively rotatable second point. The rotary guide has a helical guiding course having first helical layers, in which the line is wound about the axis of rotation, and second helical layers, in which the line is wound in the opposite direction. A return curve connects the two helical layers. According to the invention, the rotary guide has a tubular support sleeve which is coaxial with respect to the axis of rotation and serves to support the helical layers radially outwards or radially inwards. Furthermore, a rotary decoupling structure is provided, by which helical layers supported on the support sleeve are decoupled from the winding device.

First claim

What is claimed is:

1. A line guiding system, comprising:
a drum-like winding device to coil and uncoil at least one line which is rotatable about an axis of rotation through a shaft; and
a rotary guide to guide the at least one line from a first point to a second point, the rotary guide connected to the winding device in a rotationally fixed manner and which is rotatable relative to the first point, wherein the rotary guide has a helical guiding course with one or more first helical layers, in which the at least one line is wound about the axis of rotation in a first direction, one or more second helical layers, in which the at least one line is wound about the axis of rotation in a second direction opposite the first direction, and a return curve which connects the first and second helical layers and in which the at least one line is turned;
wherein the rotary guide has an outer tubular support sleeve and/or an inner tubular support sleeve arranged coaxially with the axis of rotation, which support the first and second helical layers radially outwards and/or radially inwards, respectively, and a rotary decoupling structure, based on which the first and second helical layers supported on the support sleeve are rotatable about the axis of rotation such that the first and second helical layers are decoupled from the winding device.

2. The line guiding system according to claim 1 , including the inner tubular support sleeve, which for rotary decoupling, is rotatable relative to the winding device and about the axis of rotation by a rotational mounting.

3. The line guiding system according to claim 1 , including the outer tubular support sleeve, which for rotary decoupling, is rotatable relative to the winding device and about the axis of rotation by a rotational mounting.

4. The line guiding system according to claim 1 , wherein the at least one line is guided in the rotary guide without a line guiding device accommodating the at least one line and is supported directly on the outer tubular support sleeve or the inner tubular support sleeve, depending on rotation in the first direction or the second direction.

5. The line guiding system according to claim 1 , wherein the rotary guide comprises a support body for the return curve, the support body being bent about the axis of rotation, with a return region pointing in a circumferential direction, which is adapted to the return curve, wherein the support body is freely rotatable relative to the outer tubular support sleeve and/or the inner tubular support sleeve.

6. The line guiding system according to claim 5 , including the outer tubular support sleeve and the inner tubular support sleeve, and wherein the support body is guided between the outer tubular support sleeve and the inner tubular support sleeve in an axially displaceable manner of a sliding bearing.

7. The line guiding system according to claim 5 , wherein the support body has a continuous sliding surface or guide rolls at least on the return region to reduce friction.

8. The line guiding system according to claim 1 , wherein the rotary guide comprises a line guiding device in which the line is guided according to the helical guiding course, and the line guiding device comprises support rolls for rotary decoupling.

9. The line guiding system according to claim 8 , wherein the line guiding device comprises an energy chain with a plurality of pivotally connected chain links, which each chain link of the plurality of chain links comprising at least an inner side link, an outer side link and a cross-piece connecting the inner side link and the outer side link, and wherein for rotary decoupling
a radially inwardly oriented support roll is provided on at least some of each of the inner side links; and/or
a radially outwardly oriented support roll is provided on at least some of each of the outer side links.

10. The line guiding system according to claim 9 , wherein the energy chain has a longer outer link strand and a shorter inner link strand to form the helical guiding course, wherein the outer link strand has at least one intermediate piece between every two pairs of pivotally connected side link parts.

11. The line guiding system according to claim 1 , wherein the rotary guide is provided at end regions with a first disc-shaped flange, on which the first point is arranged in a stationary manner, and a second disc-shaped flange, which is connected in a rotationally fixed manner to the drum-like winding device and on which the second point is arranged, wherein the outer tubular support sleeve and/or the inner tubular support sleeve is/are freely rotatable relative to both flanges.

12. The line guiding system according to claim 1 , including the shaft for driving the winding device, wherein the outer tubular support sleeve and/or the inner tubular support sleeve is/are mounted on the shaft in a freely rotatable manner by a rotational mounting.

13. The line guiding system according to claim 1 , including the at least one line as a multi-phase power cable, wherein the at least one line comprises a first section wound on the drum-like winding device, with a coilable and uncoilable free end, and a second section accommodated in the rotary guide with the helical guiding course and an end that is attachable in a stationary manner to the first point, wherein the at least one line is continuous and uninterrupted from the first point via the second point to the coilable and uncoilable free end.

14. The line guiding system according to claim 1 , wherein the rotary guide is arranged at least partly within the drum-like winding device in an axial direction or is entirely accommodated therein.

15. The line guiding system according to claim 1 , wherein the line guiding system is for supplying shore-side electricity to a sea-going vessel.

16. The line guiding system according to claim 1 , wherein the at least one line comprises multiple supply lines which are guided continuously from the first point to the second point.

17. A rotary guide for a line guiding system, comprising:
at least one line, which is guided in the rotary guide from a first point to a second point which is relatively rotatable about an axis of rotation relative to the first point, wherein the at least one line has a helical guiding course in the rotary guide with one or more first helical layers, in which the at least one line is wound about the axis of rotation in a first direction, one or more second helical layers, in which the at least one line is wound about the axis of rotation in a second direction opposite the first direction, and a return curve which connects the first and second helical layers and in which the at least one line is turned;
wherein the rotary guide has an outer tubular support sleeve for supporting the first and second helical layers radially outwards and an inner tubular support sleeve for supporting the first and second helical layers radially inwards, and
wherein the outer tubular support sleeve and the inner tubular support sleeve are rotatable such that the outer tubular support sleeve and the inner tubular support sleeve are decoupled from the rotation of the second point.

18. A rotary guide for a line guiding system, comprising:
at least one line, which is guided in the rotary guide from a first point to a second point which is rotatable relative to the first point about an axis of rotation, wherein the at least one line has a helical guiding course in the rotary guide with one or more first helical layers, in which the at least one line is wound about the axis of rotation in a

Assignees

• Igus Gmbh

Inventors

• Theiss Georg

Classifications

• B65H2701/34

  electric cords or electric power cables · CPC title

• F16G13/16

  with arrangements for holding electric cables, hoses, or the like · CPC title

• B65H2701/33

  Hollow or hose-like material · CPC title

• H02G11/02

  using take-up reel or drum · CPC title

• B65H75/4449 Primary

  Arrangements or adaptations to avoid movable contacts or rotary couplings, e.g. by the use of an expansion chamber for a lenght of the cord or hose · CPC title