Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
  • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
  • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02B—HYDRAULIC ENGINEERING
  • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
  • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02B—HYDRAULIC ENGINEERING
  • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
  • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
  • E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02B—HYDRAULIC ENGINEERING
  • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
  • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
  • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
  • E02B17/0809—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering the equipment being hydraulically actuated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
  • B63B35/003—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting very large loads, e.g. offshore structure modules

Definitions

• the invention relates to a lifting system for a watercraft, in particular feeder-lifting ship, according to the preamble of claim 1.
• Hubsysteme comparable type are for example from the publications DE 100 21 163 A1, DE 2 041 925 A1. EP 1 795 443 A1, EP 094 434 A1 or US Pat. No. 6,808,337 B1, US Pat. No. 4,456,404.
• DE 2 041 925 A1 shows a floating, self-lifting platform which, however, is equipped with relatively complicated rack-and-pinion drives, so that lowering and raising of support legs by means of this positive-locking device takes place relatively slowly.
• the invention is therefore an object of the invention to provide a lifting system for watercraft, especially for transport vessels in the manner of feeder helicopters, which can be temporarily supported by means of support legs on the sea or seabed, the lifting system should be designed cost-effective and from Timing a relatively quick positioning at the corresponding sea position as well as a relatively rapid lifting support legs used to allow.
• a transport ship equipped with such a lifting system also makes it possible to cancel the temporary stationary positioning by means of support legs on the seabed relatively quickly.
• the lifting system also allows a vessel equipped therewith to be largely independent of and unaffected by the sea, especially during the transfer or takeover of assemblies to and from the stationary offshore facilities.
• the locking device After the support of the watercraft on the corresponding support legs on the seabed, it allows the locking device to fix the vessel to the support legs at the appropriate height, so that subsequently by means of the lifting device, which is suitably equipped with lifting cylinders, the vessel further raised relative to the support legs can be, so that floating in waves is prevented.
• the lifting system For temporary stationary positioning of the ship or watercraft on the seabed, the lifting system provides lowerable and liftable support legs, which cooperate with a lowering device and a lifting device.
• An essential idea of the invention lies in the arrangement of a locking and braking device, which is designed for a frictional engagement with the respective support leg. This is made possible on the one hand via extending in the longitudinal direction of the support leg wings or brake rails.
• a lifting device is functionally connected with this locking and braking device, which is fixed on the other hand on the hull of the ship. With lowered support legs, this height allows tion, which is conveniently based on the hydraulic principle, a further lifting of the hull of the ship, so that floating in a wave is prevented.
• the locking and braking device is advantageously equipped with brake calipers or brake shoes, which are non-positively engageable with the wings, which are flat iron in a simple manner and mounted offset by 180 ° on opposite sides of the hollow cylindrical support leg, are engageable.
• the frictional engagement can optionally be improved by positive contours in the wing or brake rails.
• Another essential feature of the invention can be seen in the connection of the hollow cylindrical and watertight support legs with a provided in the lower region of the support leg float, which can also be referred to as flooding and buoyancy.
• This makes it possible, by simply flooding the support leg and the flood and buoyancy body to allow at the same time controlled braking device, a relatively rapid and largely continuous lowering of the support legs on the destination position.
• the hollow, watertight support legs with floating bodies can be regarded, which can be flooded and dehydrated by compressed air.
• the locking and Braking device with which the relative movement of the floating support legs relative to the hull of the ship can be slowed defined until the ship is firmly on the seabed with his support legs.
• the weight of the support legs is to be such that flooding of the float, which acts as flooding and buoyancy body, in connection with the filling state of the support leg, this floats or drops.
• the upper area of the float should float in waterless condition just at the water surface.
• a cone-shaped tip is suitably provided, which allows a better engagement in the seabed.
• air outlet holes are provided which prevent in the manner of a pressure relief valve that an excessive internal pressure is built up in the float. When emptying the float by means of compressed air these exit holes also ensure that the lower end of the support leg with a conical tip can be relatively easily detached from the seabed.
• the locking device having an annular body is fixed by means of frictional engagement between brake calipers or brake shoes on the wings or brake rails of the support legs.
• the hull of the ship thus depends on the lifting device on the corresponding ring bodies.
• the appropriately equipped with hydraulic cylinders lifting device can then lift the ship from this position further out of the water until the desired working position for the transfer or takeover of assemblies can be performed regardless of the sea state.
• the way the hydraulic cylinders have to travel depends on the penetration depth of the support leg into the seabed and on the wave height.
• the ship must be pulled up so that it does not float in a wave even when discharged, but not so high that the underside of the ship can be damaged by waves.
• the number of provided on a support leg wings or brake rails can be different and be selected depending on the carrying capacity. In the In view of a simple arrangement and cost savings, two wings and two braking systems, which are designed for example as a double-caliper brakes, should be sufficient per support leg.
• the support legs After reaching the operational position of the ship, the support legs are flooded and lowered to the seabed.
• the locking and braking device is tightened, so that the ship is set at this height relative to the support legs.
• the ship is raised via the lifting device with, for example, hydraulic function further up to its working height.
• the forces of the hydraulic system for example, by lashing chains, rigid hawsers or the like can be taken in this working position.
• the lashing chains are first released and taken over by the forces of the lifting device.
• the ship is then slowly lowered by means of the lifting device and let into the water.
• the support legs are then released hydraulically or by blowing from the ground, for example.
• the braking device is released, so that the support legs can float largely continuously and completely. In this position, the braking devices are tightened and fixed and the float out in Arretiersrelitel, where they can be hydraulically locked with bolts, for example. This measure secures the support legs with float in a rest position and especially when the ship.
• An improvement of the braking device can be achieved in that the brake shoes have, for example, about wedge shape, so that with an increase in the load and a greater holding force is generated.
• the corresponding lifting system therefore allows the combination of hydraulic and hydromechanical lifting mechanism, without the transition from one to the other method of sea state influences is prevented.
• the lift System fast and inexpensive, since it uses the buoyancy forces of the hollow cylindrical support legs with floating body, so that even with larger water depths a relatively fast retraction of the support legs is possible in their locked position.
• Fig. 1 is a schematic side view of one with such
• Fig. 2 is a plan view of the foredeck according to Fig. 1;
• Fig. 3 is a schematic view in the longitudinal direction of the ship on a
• Fig. 4 is a side view of the lifting system of FIG. 3 with a view against the ship's side wall and
• Fig. 5 shows the lifting system of Fig. 3 in the lowered position of the corresponding support leg on the seabed.
• a ship 1 is shown in side view with lifting systems 5. It is shown in the length of the ship shortened representation without the central longitudinal region of the ship 1, since in the example, the lifting systems 5 are arranged in the front and aft of the ship 1.
• the lifting system 5 has a support leg 10 with wings 13 provided on the outside or brake rails.
• This support leg 10 has integrated in the lower region a float 11, which continues down the lower part of the support leg 10 with a cone-shaped tip 35 (see also Fig. 4).
• the lifting system 5 is further characterized by an annular body 23 about the support leg 10, which receives brake calipers 24 and brake shoes in the opposite region. On this annular body 23 is still on both sides, in the example parallel to the midships axis, a lifting device with two lifting cylinders 16 vorgese- hen. These lifting cylinders 16 are fixed in the example (FIG. 4) to the hull 20.
• two lifting systems 5 are provided on the starboard side in the example, one being arranged in the fore section 2 and another in the aft section 3 of the ship.
• FIG. 2 shows a plan view of the foredeck area 2 with lifting systems 5 arranged on the starboard side and on the port side. These lifting systems 5 are connected to one another by way of cross bracing 42 for further stabilization (FIG. 5).
• U-shaped transverse arms 17 are fixed, in particular welded, to the hull 20. These U-shaped, outwardly open transverse arm 17 take on the lifting systems 5, so to speak. In this case, the lower ends of the lifting cylinders 16 are supported against these transverse arms 17, so they are articulated or rigidly fixed thereto.
• FIG. 3 fragmentary a section in the longitudinal direction of the vessel 1 of a lifting system 5 is shown.
• FIG. 4 which shows a lateral plan view of a lifting system 5 in fragmentary representation
• wings or brake rails 13 can be seen on both sides of the hollow-cylindrical support leg 10.
• An annular body 23 shown in the upper area of FIGS. 3 and 4 accommodates the locking and braking device 15, which has brake calipers or brake shoes 24 in the interior.
• the piston rod of a lifting cylinder 16 and on the other hand a lashing 26 is attached in the example.
• Lifting cylinder 16 and lashing 26 are provided on both sides of the ring body 23.
• the drop-shaped float 11 Fixed to the hull 20 is in the lower region on both sides of the support leg 10 each have a hook for fixing the lashing 26 is provided. In the resting position or driving position, the drop-shaped float 11 is placed in locking saddles 31 fixed to the hull 20, for example via bolts.
• the floating body 11 has a larger diameter than the cylindrical support leg 10. Towards the outboard wall of the ship 1, this floating body 11 is slightly flattened so that a smaller distance between the vertical longitudinal axis of the lifting system 5 and the hull 1 is achieved.
• FIG. 5 a position arrangement is shown, comparable to FIG. 3, in which the support leg 10 of a lifting system 5 is lowered onto or into the seabed 45. In this position, the corresponding bolts 32 are unlocked. Depending on the depth of the vessel 1, this can be lifted from this position on the hydraulic cylinder 16 of the lifting device even further from the water, so that a floating of the ship 1 can be avoided even when the sea is moving. In such a position, the lashing chains 26 can then be fixed relative to the hooks 27 and thus the hull 20, so that the lifting device can be relieved of load.
• the lifting device Upon completion of a supply process between the ship 1 and an offshore device, not shown, the lifting device is first put into operation with their lifting cylinders, so that the lashing chains 26 can be solved. Subsequently, in the fixed position of the locking and braking device 15 relative to the support legs 10, the lifting cylinder 16 is relieved of power, so that the ship 1 slowly sinks down and is guided. This takes place up to the immersion depth of the hull 20 due to the weight present.
• the ship 1 thus already floats, but is still supported in and on the seabed 45 by means of its four lifting systems 5, for example.
• the locking and braking device 15 is fixed relative to the respective support leg 10 and the entire lifting system is secured in the locking saddles 31.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Ocean & Marine Engineering (AREA)
• Architecture (AREA)
• Earth Drilling (AREA)
• Ship Loading And Unloading (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
• Paper (AREA)
• Eye Examination Apparatus (AREA)
• Vehicle Body Suspensions (AREA)
• Jib Cranes (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=40121955

Family Applications (1)

Country Status (11)

Families Citing this family (6)

Family Cites Families (21)

• 2008
  • 2008-09-17 DE DE202008012355U patent/DE202008012355U1/de not_active Expired - Lifetime
• 2009
  • 2009-07-28 US US13/061,923 patent/US8596907B2/en not_active Expired - Fee Related
  • 2009-07-28 PL PL09777497T patent/PL2331395T3/pl unknown
  • 2009-07-28 CN CN200980136590.8A patent/CN102271993B/zh not_active Expired - Fee Related
  • 2009-07-28 EP EP09777497A patent/EP2331395B1/fr not_active Not-in-force
  • 2009-07-28 KR KR1020117006143A patent/KR101323207B1/ko not_active IP Right Cessation
  • 2009-07-28 AT AT09777497T patent/ATE544665T1/de active
  • 2009-07-28 DK DK09777497.0T patent/DK2331395T3/da active
  • 2009-07-28 WO PCT/EP2009/005469 patent/WO2010031462A2/fr active Application Filing
• 2012
  • 2012-03-29 HR HR20120282T patent/HRP20120282T1/hr unknown
  • 2012-04-02 HK HK12103268.5A patent/HK1162421A1/xx not_active IP Right Cessation

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events