Classifications

• • 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
  • E02B17/0034—Maintenance, repair or inspection of offshore constructions
• • 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
  • B66C13/02—Devices for facilitating retrieval of floating objects, e.g. for recovering crafts from water
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
  • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
  • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02B—HYDRAULIC ENGINEERING
  • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
  • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
  • E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
  • E02B3/068—Landing stages for vessels
• • 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
  • E02B2017/0091—Offshore structures for wind turbines

Definitions

• the invention relates to a device for attaching at least one watercraft to a hydraulic structure, in particular to a tower-shaped section of a hydraulic structure, preferably a wind turbine, with a preferably platform-like application device.
• a berthing device can be realized on the tower-shaped hydraulic structures, the berthing station being protected from the sea by moving into the second position.
• the application device is not permanently exposed to waves and salt water, which protects the material and thus the life of such an application device can be extended considerably.
• the surface roughness of the wall of the hydraulic structure is not influenced in an undesirable manner, since neither Docking station there are other components in the diving area. This is because the second position forms, in particular, a stowage or rest position in which the docking station is when it is not in use but is out of operation.
• a lifting device for moving the application device on the hydraulic structure is provided.
• the application station hangs on the lifting device, the lifting device preferably having a cable pull on which the application station hangs.
• the lifting device usually has a deflection device to be provided on the hydraulic structure, which preferably has at least one deflection roller for deflecting the cable, and a drive device to be arranged below the deflection device within the hydraulic structure for winding and unwinding the cable, which is particularly advantageous for structural and structural considerations is, the drive device for arrangement in the floor area, ie to be provided in the foot or on the foundation of the hydraulic structure.
• the application device is in sliding engagement with a wall of the hydraulic structure and is supported on the wall, preferably by means of a sliding and / or roller bearing.
• at least one, preferably rail-shaped, sliding element extending approximately in the direction of movement of the docking station, with which the docking station is in sliding engagement, can expediently be present on the wall of the hydraulic structure.
• a plurality of such sliding elements should preferably be provided, which are designed and arranged such that their sliding surfaces, with which the application station is in sliding engagement, are arranged equidistantly from one another over their entire length in the direction of movement of the application station.
• the sliding elements can serve as spacers in order to compensate for the change in the shape of the hydraulic structure accordingly; this applies in particular in the case of a conical shape of the hydraulic structure in order to compensate for the decreasing diameter accordingly.
• the sliding surfaces preferably lie essentially in a cylindrical plane or are oriented tangentially to this.
• the placement station is preferably freely pivotable about an axis of rotation, which extends approximately in the direction of movement of the placement station, at least in a limited angular range, which can be realized in a simple manner in particular if the The docking station, as mentioned before, hangs on a cable. Due to this rotatable arrangement of the docking station, there is a resilient mounting, so that in the event of impacts, in particular caused by the mooring of a ship, at least some of the energy that occurs is converted into rotational energy and thus the hydraulic structure is not burdened by additional torsional moments.
• a guide device can be provided for guiding the application device during its travel movement, preferably with respect to the hydraulic engineering structure.
• the guide device has at least one guide rail to be provided on the hydraulic engineering structure, with which the application device is in sliding engagement. If the guide is designed so that it does not have a rotationally fixed effect, it is also conceivable to provide such a non-rotationally fixed guide in combination, for example, with the arrangement of sliding elements described above.
• the lay-on station has a truss structure.
• the impact forces that are brought in by a mooring ship are absorbed and distributed by a truss structure. Since the impact forces are distributed at the individual nodes of the truss rods and thus act on the hydraulic structure at several points, the individual loads for the hydraulic structure are significantly lower than if they struck at points.
• a truss structure has a resilient effect. Because due to the elasticity of the lattice structure formed by the truss structure and the resulting relatively long deformation path, the hydraulic structure is also protected in the event of an impact.
• a truss structure has a relatively low weight and offers less contact surface than continuous plating at sea impact.
• the truss structure has at least one rod which extends past the wall of the hydraulic structure, preferably tangentially to it.
• the at least one rod should extend approximately from the jetty.
• at least one pair of rods should expediently be provided, of which one rod extends from the jetty to one side of the wall and the other rod extends from the jetty to the other side of the wall of the hydraulic structure.
• Such an arrangement of rods is particularly advantageous for absorbing impact forces in order to then dissipate them in a manner that is particularly gentle on the hydraulic engineering structure.
• the application device has a fender.
• the body of the fender is made of cell-closed plastic, the hardness of which increases from the outside to the inside.
• the fender as a body of revolution, preferably a cylindrical body, the axis of rotation preferably being approximately vertical.
• a rotatable mounting of a fender converts part of the energy generated thereby into rotational energy when a ship is moored at the docking station, which also prevents excessive stress on the hydraulic engineering structure by torsional moments.
• the mooring ship turns in the right direction as it continues, and the friction that occurs when the ship is moved forward or backward relative to the docking station is minimized.
• Figure 1 in side view of the lower part of a tower standing on the sea floor with a height-adjustable platform, which is shown completely in its lower position and in part in its upper position, and with two ships attached to it;
• Figure 2 is a plan view of the arrangement of Figure 1, the tower being shown in sectional view.
• Tower 2 In Figure 1, the lower part of a tower 2 is shown, which is anchored to the seabed 6 via a foundation 4.
• Tower 2 can be, for example, the tower of an offshore wind turbine.
• a platform 10 is provided which, in the exemplary embodiment shown, surrounds the tower 2, as can be seen in particular in FIG. 2.
• the platform 10 can have different basic shapes. For example, it is conceivable for the platform 10 to be circular or polygonal.
• FIG. 2 two different designs are each shown in half with regard to the basic shape, wherein the upper half according to FIG. 2 represents a platform with a rectangular basic shape and is identified by the reference symbol "10-1" and the lower half according to FIG.
• the platform 10 represents a platform with an octagonal basic shape and is identified by the reference symbol "10-2".
• the platform 10 is between a lower first position, which is denoted by “I” in FIG. 1, and an upper second position, which is denoted by “II” in FIG. 1, in the vertical direction along the Tower 2 movably mounted, with the aid of a lifting device described in more detail below.
• the lower first position I is the docking position in which at least one ship can dock on the platform 10; in the figures two ships 12 are shown by way of example, have fastened diametrically opposite to the platform.
• the platform 10 has a welded tubular construction which forms a framework in order to take off the ramming impacts that occur against the tower 2 due to mooring ships.
• the pairs of bars 14, 15 which can be seen in FIG. 2, of which the one bar 14 extends from a point adjacent to the center of the outside of the platform 10 tangentially to one side of the wall 2a of the tower 2 and the other rod 15 extends from a location opposite the center of the outside of the platform 10 tangentially to the other side of the wall 2a of the tower 2, as can be seen in FIG.
• the platform 10 spans the tower 2 in several levels, which are designed in a truss.
• the individual levels are connected to each other by vertical pipe supports, not specified.
• additional pipe supports are additionally drawn in diagonally from level to level.
• the top of the platform 10 is provided with support grids, not specified, in order to make the platform 10 accessible.
• the platform 10 is designed with a railing 16 toward the sea side.
• a plurality of guide or slide rails 18 are attached along the tower 2 and extend in the vertical direction, as can be seen in FIG. 1.
• Each quadrant of the tower 2 is provided with two slide rails 18 in the exemplary embodiment shown.
• the sliding rails 18 form sliding surfaces on their outside, the sliding rails 18 in the exemplary embodiment shown being arranged on the tower 2 in such a way that the sliding surfaces lie in a cylindrical plane in order in an upper conical section 2b of the tower 2 to correspond to the diameter, which decreases in height compensate.
• each level of the platform 10 is closed off by a circumferential support ring 20 (see FIG. 2).
• This carrier ring is recessed only in the area of an emergency ladder (not shown) on the tower 2 and, moreover, serves as an abutment with respect to the slide rails 18. Accordingly, the inner surface of the carrier rings 20 bears against the slide rails 18 and is thus in sliding engagement with them. For better sliding, the carrier rings 20 are coated on their inner surfaces with a suitable sliding material.
• the platform 10 in the exemplary embodiment shown is suspended from four traction cables 22, each of which is guided into the interior of the tower 2 via deflection rollers 24 be redirected.
• the deflection rollers 24 are arranged in the wall 2a of the tower 2 above the upper position II.
• a traction cable 22 and an associated deflection roller 24 are provided on the tower 2 in each quadrant.
• sleeve bushings are arranged on the tower for the four traction cables 22.
• the traction cables 22 are deflected to a drum winch 26, which is set up inside the tower 2, as indicated in FIG.
• the winch 26 expediently sits in the foot of the tower 2 above the foundation 4.
• the winch 26 is driven by a first electric motor (not shown).
• a second electric motor also not shown, is also provided, in order to be able to drive the winch in the event of a fault in the first electric motor.
• the winch 26 should be designed so that in the event of a power failure, the winch 26 can also be mechanically, e.g. can be operated by means of a hand crank.
• the winch 26 is also provided with a brake, not shown, in order to be able to fix the platform 10 at any desired height between the lower position I and the upper position II.
• limit switches (not shown) can be provided in the winch 26 in order to switch off the winch 26 when the platform 10 reaches one of the two positions I or II.
• the platform 10 is freely pivotable about the vertical longitudinal axis of the tower 2 over a limited angular range on both sides. Therefore, the pull cables 22 are rotatably mounted on the platform 10, so that even when the platform 10 is pivoted, caused by the mooring of a ship 12, the pull cables 22 do not twist. For this purpose, low-twist ropes should also be used as pull ropes 22.
• the winch 26 can be operated using a remote control from the ship 12 or from the platform 10. Furthermore, a third operating option can be provided on the tower 2.
• stops can also be arranged in the region of the lower position I, on which the platform 10 comes to rest in its lower position I.
• the platform 10 In the upper position II, the platform 10 can be locked mechanically, specifically by a locking device (not shown), which relieves the tension on the traction cables 22 and the winch 26.
• the platform 10 is equipped with several fenders 30 of different sizes for safe application.
• larger fenders are provided at the corners of the platform 10-1 or 10-2 than at intermediate locations.
• the individual fenders 30 are cylindrical and rotatably mounted about vertical axes of rotation, so that when a ship 10 is moored, part of the energy generated by impact forces is converted into rotational energy and thus the tower 2 is not additionally loaded by torsional moments.
• the ship 12 berthing in this way turns away in the correct direction and the friction occurring when the ship 12 is moved forward and backward is minimized.
• the fenders preferably consist of a body made of cell-closed plastic material, the hardness of which increases from the outside inwards.
• the hardness of the Fender 30 should be relatively soft, i.e. with a low Shore hardness, in order to achieve the highest possible degree of compressibility. In this way, as much energy as possible of the elastic shock is to be absorbed in the fenders 30 in order to keep the load in the platform 10 and on the tower 2 as low as possible.
• a vertical ladder 32 (see FIG. 1) is arranged centrally between the fenders 30, which extends from the lower to the upper level of the platform 10 and is laterally delimited by vertical protective strips (not shown).
• Such a climbing ladder 32 is intended to prevent people from getting caught when climbing from the ship 12 to the platform 10.
• the carrier rings 20 are left in the area of an emergency ladder arranged on the tower 2, which is not shown in the figures, however.
• a ship picks up 12 service personnel in the port or from a larger work ship and moves it to the place of use.
• platform 10 On site at tower 2, platform 10 is moved downward from upper position II, which generally also forms the rest or stowed position, to a height adapted to the tide and the sea state.
• the skipper then maneuvers the ship 12 towards the platform 10 from the optimal direction.
• the service staff then adjusts a swell and climbs over the ladder 32 on the platform 10 or directly onto the platform 10 as shown schematically in FIG.
• the height of the platform 10 can of course be adjusted accordingly during the work on the tower 2, the second position II forming the upper position.
• the tower 2 it is also conceivable for the tower 2 to have an entrance door in the area of the upper position II in order to carry out further maintenance work there and also to be able to get inside the tower 2.
• the platform 10 is in any case moved back into the upper position II, which, as already mentioned, also forms the rest or stowed position.
• the upper position II is so far above the water surface that the platform 10 cannot be reached by the waves and the sea.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Civil Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Geology (AREA)
• Environmental & Geological Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Prevention Of Electric Corrosion (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
• Jib Cranes (AREA)
• Control Of Metal Rolling (AREA)
• Devices For Checking Fares Or Tickets At Control Points (AREA)
• Wind Motors (AREA)
• Ship Loading And Unloading (AREA)
• Harvesting Machines For Specific Crops (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=32404480

Family Applications (1)

Country Status (6)

Families Citing this family (5)

Family Cites Families (6)

• 2003
  • 2003-11-28 DE DE50310262T patent/DE50310262D1/de not_active Expired - Lifetime
  • 2003-11-28 AU AU2003293740A patent/AU2003293740A1/en not_active Abandoned
  • 2003-11-28 EP EP03789101A patent/EP1565619B1/fr not_active Expired - Lifetime
  • 2003-11-28 DK DK03789101T patent/DK1565619T3/da active
  • 2003-11-28 AT AT03789101T patent/ATE403040T1/de not_active IP Right Cessation
  • 2003-11-28 WO PCT/EP2003/013404 patent/WO2004051002A2/fr not_active Ceased

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events