WO2004035455A2 - Appareil - Google Patents

Appareil Download PDF

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Publication number
WO2004035455A2
WO2004035455A2 PCT/GB2003/004348 GB0304348W WO2004035455A2 WO 2004035455 A2 WO2004035455 A2 WO 2004035455A2 GB 0304348 W GB0304348 W GB 0304348W WO 2004035455 A2 WO2004035455 A2 WO 2004035455A2
Authority
WO
WIPO (PCT)
Prior art keywords
rope
cable
bearing
service cable
service
Prior art date
Application number
PCT/GB2003/004348
Other languages
English (en)
Other versions
WO2004035455A3 (fr
Inventor
Alexander Charles Crawford
Original Assignee
Deep Tek Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deep Tek Limited filed Critical Deep Tek Limited
Priority to AU2003274309A priority Critical patent/AU2003274309A1/en
Publication of WO2004035455A2 publication Critical patent/WO2004035455A2/fr
Publication of WO2004035455A3 publication Critical patent/WO2004035455A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • B66C13/14—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices to load-engaging elements or motors associated therewith

Definitions

  • This invention relates to apparatus for use in handling a load which is capable of raising and lowering, or of towing, a load and also handling service cables and/or hoses connected to the load.
  • the invention is particularly, but not exclusively, applicable to the handling of subsea equipment such as grabs .
  • the service cable is generally wound around the rope from a winder drum on a rotatable arm.
  • the arm is typically powered by a motor, and winding the arm around the rope as the rope is lowered twists the service cable around the rope.
  • Rollers/sheaves or other guides at the lowest part of the winding apparatus position the twisted service cable and rope and prevent it from bearing directly on other parts of the apparatus.
  • the rollers/sheaves/guides are typically in the form of a cage enclosing the rope and are typically attached to and rotate with the winder arm or drum.
  • apparatus for use in handling a load comprising a load-bearing rope, a mechanism for paying out and recovering the rope, a service cable and a service cable holder for holding the service cable, a wrapping device for rotating one of the service cable and the rope around the other as they are paid out to wrap the two together, and to unwrap them as they are recovered, a guide means for guiding the rope, and a bearing device for the guide means .
  • Certain embodiments of the invention facilitate the movement of the winder arm or drum, reduce tension on the service cable, and reduce complications with self-tensioning devices commonly used on the cable winch drum to tension the service cable on the rope.
  • service cable is used herein to denote a flexible elongate member used for conveying power or data, such as an electrical cable, a fibre optic cable, or a pneumatic or hydraulic hose.
  • the guide means comprises at least one roller or sheave.
  • more than one roller or sheave is provided.
  • four rollers are provided around the circumference of the rope forming a roller cage which encloses the rope.
  • the rollers can form an arcuate inner surface for bearing against the rope in preferred embodiments.
  • the wrapping device comprises a service cable drum being arranged for rotation about a drum axis which coincides with the axis of the rope.
  • the cable may be guided by sheaves or pulleys from the drum. Instead of rotating on its axis, cable drum may be static and may have a winding device rotating around it to pay out the service cable.
  • the service cable drum has a central aperture through which the load-bearing rope passes.
  • the service cable drum may be rotatably mounted on a structural member so that its axis is not co- incident with the axis of the rope, and so that it is moved in a circular path around the axis of the rope as the cable is being paid out or recovered. Sheaves and/or pulleys may again guide the cable as it is being paid out or recovered.
  • the axis of the service cable drum in such embodiments can be vertical so that it is parallel to the axis of the rope, or horizontal, so that it is perpendicular to the axis of the rope.
  • the cable drum has an axis which coincides with the axis of the rope, the cable drum typically having a central aperture through which the rope passes, with the service cable passing over a cable sheave which is mounted for movement in a circular path around the axis of the rope.
  • the mechanism for paying out and recovering the rope includes a rope winch, from which the rope passes over a rope sheave and thereafter extends to the load along a substantially straight axis.
  • the service cable is paid out close to the axis of the rope.
  • the apparatus also includes a mechanism for holding and paying out a second or further cable, and a second wrapping device for wrapping the second or further cable around the rope and the first cable as the second cable is paid out, to wrap the second cable around the entwined first cable and rope, and to unwrap the second cable from the first cable-hoist rope combination as they are recovered.
  • a mechanism for holding and paying out a second or further cable and a second wrapping device for wrapping the second or further cable around the rope and the first cable as the second cable is paid out, to wrap the second cable around the entwined first cable and rope, and to unwrap the second cable from the first cable-hoist rope combination as they are recovered.
  • the service cable comprises an electrical cable, a fibre optic cable, a pneumatic cable or a hydraulic hose.
  • the load-bearing rope is a hoist rope used for raising and lowering a load.
  • the load-bearing rope is a rope adapted for paying out, towing and recovering a load.
  • more than one service cable is provided, each extending from a respective drum.
  • FIG. 1 is a schematic perspective view illustrating the principle of operation of a first example of the invention
  • Fig 2 is a more detailed side view, partly in section, of an apparatus used in the example of Fig. 1 having a guide means in the form of a roller cage and a cable drum with its axis vertically aligned
  • Fig. 3 is a side view of the embodiment of Fig. 2, also showing a second arm and second cable
  • Fig. 4 is a side view of an embodiment similar to Fig. 3, having guide means in the form of guide sheaves
  • Fig. 1 is a schematic perspective view illustrating the principle of operation of a first example of the invention
  • Fig 2 is a more detailed side view, partly in section, of an apparatus used in the example of Fig. 1 having a guide means in the form of a roller cage and a cable drum with its axis vertically aligned
  • Fig. 3 is a side view of the embodiment of Fig. 2, also showing a second arm and second cable
  • FIG. 5 is a schematic perspective view of the embodiment of Fig 3 ;
  • FIG. 6 is a schematic perspective view illustrating an alternative embodiment of the invention;
  • Fig. 7 is a side view of the invention having a guide means in the form of a roller cage and a cable drum with its axis horizontally aligned;
  • Fig. 8 is a side view similar to that of Fig 7, having a guide means in the form of sheave guides;
  • Fig. 9 is a schematic perspective view illustrating an embodiment similar to that of Fig. 1 but modified for towing rather than lifting;
  • Fig. 10 is a schematic perspective view illustrating an embodiment similar to that of Fig. 6 but modified for towing rather than lifting. Referring to Fig.
  • a hoist rope 1 extends from a hoist rope winch' 13 over a hoist rope sheave 4 to support a load (not shown) for raising and lowering.
  • the hoist rope 1 may be any suitable form of hoist rope such as flexible steel wire rope or preferably a synthetic fibre rope, for example of "Kevlar" .
  • a service cable 2 is reeled on a service cable drum 3 and extends to the load via a service cable sheave 5.
  • the hoist rope 1 passes through a central aperture of the service cable drum 3, and the service cable sheave 5 is arranged to be driven circumferentially around the axis of the service cable 1.
  • the service cable drum 3 and the service cable sheave 5 By co- ordinating the movements of the hoist rope winch 13, the service cable drum 3 and the service cable sheave 5, the service cable 2 can be wrapped helically around the hoist rope 1 as the load is lowered, and unwrapped as the load is raised. In this way, a hoist rope of any desired properties can be used in combination with any required service connection.
  • Fig. 2 shows the service cable drum 3 and associated parts in greater detail .
  • the cable sheave 4 is journalled to a fixed frame 20 that is secured to any suitable supporting structure such as an A frame (not shown) .
  • the service cable drum 3 is rotatably mounted on the lower part of the frame 20 and driven in rotation by a motor 6.
  • the inner end of the service cable 2 can be connected to any appropriate service if needed by any convenient means (not shown) but is otherwise connected to the cable drum 3.
  • the service cable sheave 5 is journalled on a mounting frame 9 that is rotatable about the fixed frame 20 by means of a motor 7.
  • the rope 1 extends downwards through the apparatus through a roller cage 30.
  • the roller cage 30 is typically composed of four rollers, positioned at right angles to each other, defining a square central hole, through which the rope 1 passes.
  • a bearing 32 Between the roller cage 30 and the drum 3 is a bearing 32, which allows the frame 9 and the cable drum 3 to rotate independently of the roller cage 30.
  • the bearing 32 could consist of bearings in a bearing race, or it could simply be two plain bearing surfaces.
  • Fig 3 shows an embodiment similar to that of Fig. 2, but also having a second service cable 17, which is wound around the hoist rope 1.
  • This second service cable is stored in a second drum 44, which is located on top of a L-shaped arm 34 mounted for rotation about the hoist xope 1.
  • the second cable 17 is guided over the end of the arm 34 by rollers/guide sheaves 14.
  • the arm 34 may be rotated in the same, or a contrary direction to the frame 9.
  • Fig 4 shows an embodiment similar to that of fig 3.
  • the roller cage 30 is replaced by guide sheaves 42.
  • the second drum 44 holding the second service cable 17 is coaxial with the axis of the rope 1 and is positioned directly on top of the cable drum 3.
  • the sheaves 42 are mounted on the bearing which allow the sheaves 42 to rotate independently of the drum 3 to follow the rope 1 if it pulls to one side.
  • Fig 5 shows a modification in which a second service cable 17 is wrapped around the hoist rope 1 along with the service cable 2.
  • the service cables 2, 17 are each provided with a respective storage drum 15, 16 and a respective sheave 5, 50 which may suitably be carried on a common supporting frame for rotation in unison.
  • the apparatus may be further modified by adding further drums and sheaves to handle more services.
  • the second sheave 50 could be rotatable independently of (and optionally in the opposite direction to) the first sheave 5.
  • the second cable 17 could be an additional service cable to wind around the rope 1.
  • Fig. 6 illustrates a second example in which the service cable 2 is reeled on a drum 3 and the drum 3 is itself rotated about the hoist rope 1 to achieve a helical wrap and unwrap.
  • the example shown in Fig. 6 could be modified by adding further service cable drums to be rotated by the motor 10.
  • Fig. 7 shows a more detailed view of part of Fig. 6.
  • the service cable drum 3 is rotatably mounted on a first arm 18 for rotation around the rope 1. Rotation of the arm 18 is powered by the motor 10.
  • the rope 1 extends downwards through the apparatus through a roller cage 30, typically composed of four rollers set at right angles to each other.
  • the roller cage 30 has a square hole in the centre, through which the rope 1 passes.
  • a bearing 32 Above the roller cage 30 is a bearing 32, which allows the first arm 18 to rotate independently of the roller cage 30.
  • the bearing 32 could be bearings in a bearing race, or simply two bearing surfaces. Ball bearings are used in this example, but roller bearings could be used instead.
  • a second cable 36 is supported by a second drum 38 mounted on the end of a rotatable second arm 35.
  • the second arm 35 may be rotatable independently of (and optionally in the opposite direction to) the first arm 18.
  • the second cable 36 could be an additional service cable to wind around the rope 1.
  • Fig. 8 shows an alternative embodiment of part of Fig. 6, having guide sheaves 42 instead of the roller cage 30 of Fig. 7.
  • the sheave block is connected to the drum by means of the bearing.
  • the second drum 38 is mounted on the end of arm 35, in this embodiment it is mounted on the top of arm 35 and the second cable 36 is guided over the outer edge of the arm by guides 49, typically rollers or guide sheaves, so that the second cable 36 leaves the apparatus radially outward of the service cable 2.
  • Fig. 9 illustrates the example of Fig. 1 modified for use in a marine towing application, for example in paying out, towing and recovering a sensor array such as a sonar sensor or seismographic surveying sensor, the sensor array being towed underwater or on the surface.
  • the service cable drum 3 is hinged to the main structure of the towing vessel (not shown) and can be tilted to a desired towing angle by hydraulic or other mechanisms.
  • Fig. 10 illustrates the modification of the example of Fig. 6 for the same use, the frame carrying the mounting arm for the service cable drum 3 being hinged to the vessel and tilted to the desired angle by hydraulic or other mechanisms.
  • Embodiments of the invention may be applied to a system in which one or more service cables is applied to a load-bearing rope which itself carries a service channel in addition to fulfilling its load-bearing function.
  • the load- bearing rope could be a steel wire rope carrying electrical signals, or a rope comprising "Kevlar" load-bearing strands in combination with optical fibre cable.
  • the bearing 32 does not have to be mounted above the roller cage 32; the bearing could be radially outward of the roller cage 30, or in another position.
  • Fig. 1 Many cable drums could be provided: in Fig. 1, they could be stacked on top of each other; in Fig. 6 there could be many arms extending radially outwards from the rope axis, each with a respective cable sheave. Further rollers and/or guide sheaves could be used to conveniently position the cable relative to the rope, e.g. to deflect one away from the axis of the other, or to pass the cable around the lip of an arm to align the cable with the rope.
  • the guide means may comprise both rollers and guide sheaves.
  • the roller cage 30 shown in Figs. 3 and 7 could be provided in conjunction with guide sheaves 42 (shown in Figs. 4 and 8).
  • combinations such as two rollers and two guide sheaves could be used.

Abstract

L'invention concerne un procédé et un appareil pour manipuler une charge, permettant de soulever et baisser une charge, ou la tracter, et de manipuler des tuyaux et/ou des câbles de service reliés à la charge. L'appareil selon l'invention comprend un moyen de guidage servant à guider le câble de traction, ainsi qu'un dispositif support pour le moyen de guidage en vue de faciliter le mouvement du bras ou du tambour d'enroulement et réduire ainsi la tension exercée sur la câble de service et les problèmes liés aux dispositifs à réglage automatique de tension utilisés habituellement sur le tambour d'enroulement du câble de service pour tendre ce dernier sur le câble de traction. Le dispositif support est situé généralement entre le dispositif d'enroulage et le moyen de guidage de façon à isoler le dispositif d'enroulage du couple appliqué par le câble de traction au moyen de guidage.
PCT/GB2003/004348 2002-10-15 2003-10-07 Appareil WO2004035455A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003274309A AU2003274309A1 (en) 2002-10-15 2003-10-07 Apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0223965A GB0223965D0 (en) 2002-10-15 2002-10-15 Apparatus
GB0223965.5 2002-10-15

Publications (2)

Publication Number Publication Date
WO2004035455A2 true WO2004035455A2 (fr) 2004-04-29
WO2004035455A3 WO2004035455A3 (fr) 2004-06-03

Family

ID=9945946

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/004348 WO2004035455A2 (fr) 2002-10-15 2003-10-07 Appareil

Country Status (3)

Country Link
AU (1) AU2003274309A1 (fr)
GB (1) GB0223965D0 (fr)
WO (1) WO2004035455A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010023160A2 (fr) 2008-08-29 2010-03-04 Vestas Wind Systems A/S Agencement de guidage de câble et éolienne utilisant un tel agencement
WO2011015856A1 (fr) * 2009-08-07 2011-02-10 Deep Tek Ip Limited Appareil et procédé destinés à être utilisés dans la manutention d’une charge
CN107147043A (zh) * 2017-05-27 2017-09-08 广船国际有限公司 一种电缆延伸方法
US10364124B2 (en) 2016-05-24 2019-07-30 Tobe's Llc Rope dispensing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US16992A (en) * 1857-04-07 Hawse-hole for vessels
WO2000056654A1 (fr) * 1999-03-22 2000-09-28 Deep Tek Limited Procede applicable a la manipulation d'une charge et appareil a cet effet
WO2001025130A1 (fr) * 1999-10-05 2001-04-12 Deep Tek Limited Appareil et procede de manipulation d'une charge
US20010042857A1 (en) * 1995-01-25 2001-11-22 Crawford Alexander Charles Apparatus and a method for use in handling a load

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US16992A (en) * 1857-04-07 Hawse-hole for vessels
US20010042857A1 (en) * 1995-01-25 2001-11-22 Crawford Alexander Charles Apparatus and a method for use in handling a load
WO2000056654A1 (fr) * 1999-03-22 2000-09-28 Deep Tek Limited Procede applicable a la manipulation d'une charge et appareil a cet effet
WO2001025130A1 (fr) * 1999-10-05 2001-04-12 Deep Tek Limited Appareil et procede de manipulation d'une charge

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010023160A2 (fr) 2008-08-29 2010-03-04 Vestas Wind Systems A/S Agencement de guidage de câble et éolienne utilisant un tel agencement
WO2010023160A3 (fr) * 2008-08-29 2011-02-17 Vestas Wind Systems A/S Agencement de guidage de câble et éolienne utilisant un tel agencement
CN102164841A (zh) * 2008-08-29 2011-08-24 维斯塔斯风力系统集团公司 用于线缆导引的装置以及使用这种装置的风力涡轮机
US8747073B2 (en) 2008-08-29 2014-06-10 Vestas Wind Systems A/S Arrangement for cable guiding and a wind turbine using such arrangement
WO2011015856A1 (fr) * 2009-08-07 2011-02-10 Deep Tek Ip Limited Appareil et procédé destinés à être utilisés dans la manutention d’une charge
US8960646B2 (en) 2009-08-07 2015-02-24 Deep Tek Ip Limited Apparatus and method for use in handling a load
US10364124B2 (en) 2016-05-24 2019-07-30 Tobe's Llc Rope dispensing device
CN107147043A (zh) * 2017-05-27 2017-09-08 广船国际有限公司 一种电缆延伸方法

Also Published As

Publication number Publication date
GB0223965D0 (en) 2002-11-20
WO2004035455A3 (fr) 2004-06-03
AU2003274309A1 (en) 2004-05-04

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