EP0233726A1 - Zuwasserlassungs-Vorrichtung - Google Patents

Zuwasserlassungs-Vorrichtung Download PDF

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Publication number
EP0233726A1
EP0233726A1 EP87300917A EP87300917A EP0233726A1 EP 0233726 A1 EP0233726 A1 EP 0233726A1 EP 87300917 A EP87300917 A EP 87300917A EP 87300917 A EP87300917 A EP 87300917A EP 0233726 A1 EP0233726 A1 EP 0233726A1
Authority
EP
European Patent Office
Prior art keywords
deck
support
frame
rig
edge
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP87300917A
Other languages
English (en)
French (fr)
Inventor
Robert George Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anchortech Ltd
Original Assignee
Anchortech Ltd
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 Anchortech Ltd filed Critical Anchortech Ltd
Publication of EP0233726A1 publication Critical patent/EP0233726A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/36—Arrangement of ship-based loading or unloading equipment for floating cargo
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/52—Floating cranes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving

Definitions

  • This invention relates to launching apparatus for an elongate structure such for example as a piling rig.
  • piling rigs for use on the sea bed are normally transported to the area of use by ship, launched from the ship and lowered to the sea bed.
  • a large A-frame pivotally mounted on the deck of the ship is generally used.
  • the piling rig is supported by the A-frame which is then pivoted from a position inboard of the ship's deck to a position where the upper portion of the frame extends over the side of the ship, long-stroke hydraulic rams being used to move the frame between the two positions.
  • the piling rig passes through the A-frame as it pivots, so the A-frame must be sufficiently large to allow a clear passage for the rig and to lift the rig clear of the deck.
  • apparatus for use in launching a structure from a deck, comprising a support for receiving a structure, said support being linearly moveable across a deck between a storage position and a launch position, stop means on the deck at said launch position, the support being pivotal at said stop means to hold the structure clear of the deck, and suspension means for lowering the structure from the support.
  • the support may be in the form of an A-frame. In the storage position the structure may lie upon the A-frame.
  • Runners a slideway or other guide means, which may be removable, may be provided on the deck for the linear movement of the support.
  • the structure is preferably held on the support in the storage position so that the structure is substantially inboard of the deck edge.
  • the linear movement of the support to its position adjacent the deck edge causes a portion of the structure to project beyond the deck edge; the weight of said portion then assists in pivoting the support.
  • the winch means may include a cable or other flexible connector which extends from a winch on the deck to the support and thence to the structure.
  • the cable may pass over a pulley on the support.
  • the linear and pivotal movement of the support may also be provided by one or more winches which may include the said winch means.
  • the winches may allow the structure to be lifted back to the support, and the support to be pivoted back onto the deck, after use. The support and structure may then be moved linearly to the storage position.
  • the structure is held on the support by a releasable lock so that the structure and the support are locked together during linear and pivotal movement.
  • the lock is preferably released when the support has been pivoted into the position where the structure is held beyond the deck edge.
  • the releasable lock may be for example a pin which passes through corresponding apertures or formations on the structure and support.
  • a method of launching a structure from a deck comprising locating the structure on a support on the deck, moving the support with the structure linearly across the deck to a position adjacent the edge of the deck, pivoting the support at said position until the structure is held by the support beyond the edge of the deck, and lowering the structure from the support.
  • apparatus of this embodiment of the invention includes an A-frame 1 whose side arms 3 lie horizontally along a flat deck 2 of an anchor handler ship.
  • the side arms 3 have rollers 4 to facilitate movement along the deck 2.
  • a piling rig 5 for use in driving piles on the sea bed is mounted horizontally on the A-frame 1 and cantilevered from it.
  • a framework 6 of the rig 5 is supported on the side arms 3 of the A-frame 1 and the top of a hammer at an end portion 11 of the rig 5 is secured to the apex 7 of the A-frame by a locking pin (not shown).
  • a 12 tonne main winch (not shown) is secured to the deck 2 and a cable 8 runs from it round a pulley 9 on the deck 2 to pulleys 10, 23 on one side of the A-frame 1 and rig 5. From there the cable runs across the A-frame and returns along the opposite side of the A-frame around pulleys corresponding to the pulleys 10, 23 and thence to a padeye on the deck 2.
  • a 5 tonne tugger winch (not shown) is also secured to the deck 2 and a tugger cable 12 runs from it round a pulley 13 at an e3ge of the deck 2, to a pulley 14 at the apex 7 of the A--frame, from there to a pulley 15 at an opposite end of the rig 5, across the rig to a corresponding pulley (not shown) at the other side edge of the rig 5 and from there between pulleys on said other side edge of the rig and A-frame which correspond to the pulleys 15, 14, 13, after which the tugger cable runs to a fixed padeye (not shown) secured to the deck in the vicinity of the tugger winch.
  • the pulleys 13 are mounted on brackets 16 secured at the edge of the deck 2, each bracket 16 having an inclined face 17 and a recess 18 capable of receiving a cylindrical stub 19 at the free end of the side arm 3 of the A-frame 1.
  • Static chains 20 extend between padeyes 21 on the deck 2 and fixed mountings 22 on the apex 7 of the A-frame 1.
  • the apparatus When the anchor handler transports the piling rig to the desired location the apparatus is in the position shown in Fig. 1, with the A-frame 1 held fast by means of tension in both the main cable 8 and the tugger cable 12.
  • the tugger winch On arrival at the location, the tugger winch is actuated to provide maximum tension in the tugger cable 12, and with only nominal tension in the main cable 8 the A-frame 1 with the rig 5 moves on its rollers 4 towards the edge of the deck until it reaches the position shown in Fig. 2.
  • the leading end of the A-frame then engages the brackets 16, preventing further linear movement towards the deck edge. In this position the leading end of the piling rig 5 extends well over the side edge of the deck, tending to tip the A-frame 1.
  • the tension in the main cable 8 prevents rotation of the A-frame 1 and rig 5.
  • the main cable 8 is then paid out gradually to allow controlled rotation of the A-frame 1 and rig 5 about the brackets 16, and with tension being maintained in the tugger cable 12 the position shown in Fig. 3 is reached.
  • the pulleys 13 can be positioned such that tension in the tugger cable 12 initiates or assists this controlled rotation.
  • the stubs 19 have entered the recesses 18 of the brackets, forming a hinge connection for easy and smooth rotation of the A-frame 1.
  • the rig 5 has pivoted on the outer nose of the brackets 16 until almost upright, and is suspended by the cables 8, 12 and, through the locking pin at the hammer of the rig, from the A-frame 1.
  • the A-frame 1 is at its maximum rotation determined by the static chains 20.
  • the side arms 3 are then secured to the brackets 16 by shackles or similar means.
  • the static chains 20 take the weight of the A-frame.
  • the main cable 8 then pays out, lowering the rig 5 through the position shown in Fig. 5 until the rig rests on the sea bed for use in its piling operations. During lowering of the rig 5 the tugger cable is maintained in nominal tension to prevent fouling.
  • the apparatus o-P this embodiment of the invention allows a variety of flat-decked ships to be converted into pile barges by simple fixing of winches, brackets and padeyes to the deck.
  • the linear travel of the A-frame to the deck edge from its storage position allows the A-frame to be of light, cross-braced construction, and the position of the rig on top of the A-frame removes the need for the A-frame to be large enough to allow the rig to pass thorugh it on rotation.
  • Heavy-duty hydraulic rams are unnecessary as the weight of the A-frame and rig can be taken by the cables 8, 12 and static chains 20.
  • the construction of the A-frame and rig is such that the overall width and height are reduced as compared with conventional apparatus, thus facilitating transport of the apparatus on land from one port to another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jib Cranes (AREA)
EP87300917A 1986-02-01 1987-02-02 Zuwasserlassungs-Vorrichtung Withdrawn EP0233726A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8602513 1986-02-01
GB868602513A GB8602513D0 (en) 1986-02-01 1986-02-01 Launching apparatus

Publications (1)

Publication Number Publication Date
EP0233726A1 true EP0233726A1 (de) 1987-08-26

Family

ID=10592378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87300917A Withdrawn EP0233726A1 (de) 1986-02-01 1987-02-02 Zuwasserlassungs-Vorrichtung

Country Status (2)

Country Link
EP (1) EP0233726A1 (de)
GB (1) GB8602513D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060133A (zh) * 2015-07-14 2015-11-18 中国船舶重工集团公司第七一〇研究所 一种水下探测设备的布放与回收装置及其布放、回收方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840133A1 (de) * 1977-11-14 1979-05-17 Hollandsche Betongroep Nv Pfahleintreibvorrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840133A1 (de) * 1977-11-14 1979-05-17 Hollandsche Betongroep Nv Pfahleintreibvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060133A (zh) * 2015-07-14 2015-11-18 中国船舶重工集团公司第七一〇研究所 一种水下探测设备的布放与回收装置及其布放、回收方法

Also Published As

Publication number Publication date
GB8602513D0 (en) 1986-03-05

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: MARTIN, ROBERT GEORGE