Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B81/00—Repairing or maintaining vessels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
  • B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
  • B63B73/60—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by the use of specific tools or equipment; characterised by automation, e.g. use of robots
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
  • B63C5/00—Equipment usable both on slipways and in dry docks
  • B63C5/02—Stagings; Scaffolding; Shores or struts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
  • B63C5/00—Equipment usable both on slipways and in dry docks
  • B63C5/02—Stagings; Scaffolding; Shores or struts
  • B63C2005/022—Shores or struts, e.g. individual oblique support elements for stabilizing hulls in dry-docks

Definitions

• the present invention relates to a handling system, that is to say, for example, for laying and removing a shaft line from a ship, the system comprising at least one beam.
• the propulsion of a ship is provided by a thruster mounted at the end of a shaft line.
• the shaft line is supported by one or more bearings. These bearings wrap around the shaft line and are connected to the hull of the ship.
• the shaft line is a very long part connecting a thruster on one side and a geared motor on the other.
• the operations of laying and removing the shaft line are highly technical and require, for example, a very large clearance space at the rear of the vessel, also called the skidding length, allowing the shaft line to be taken out of its way. housing and gradually bring it down horizontally on the ground.
• the devices of the state of the art are bulky, that is to say that the devices are very wide and take up a lot of space under the aft of the ship's hull, thus limiting traffic around the vessel. ship for example in a hull basin.
• One of the aims of the invention thus consists in providing a system for handling a shaft line of a ship offering an improvement in the alignment of the shaft line and its bearings during the removal and removal operations. installation as well as a reduction in system installation operations while improving operator safety.
• the handling system of the invention is also easier to use, thus improving the reproducibility of handling.
• the invention relates to a system for handling a shaft line of a ship, characterized in that it comprises: at least one beam intended to be positioned below the shaft line ; and
• At least one carriage mounted movable in translation on said at least one beam, said at least one carriage being configured to pass from a deployed state in which said at least one carriage supports all or part of the shaft line and a state retracted wherein said at least one carriage is decoupled from the shaft line.
• the invented handling system improves alignment of the shaft line with its support bearings while increasing operator safety with the use of a guided rail cart.
• the width of the system is very small and significantly reduces the bulk of the invention.
• the installation and removal system comprises one or more of the following characteristics, taken in isolation or in any technically possible combination:
• Said at least one beam has a length of between 6 and 14 m.
• the system being intended for use in a hull basin, said hull basin comprising a plurality of tins, said at least one beam is configured to be mounted on this plurality of tins.
• the invention does not use anchor points welded to the hull of the ship. This has the advantage of reducing the number of operations during the installation of the system of the invention, thus improving the safety of operators.
• It includes lifting means configured to dispose and / or configured to remove the shaft line of the at least one cart in the deployed position.
• the lifting means are connected to the ship by second suspension means.
• Figure 1 is a side view of a ship equipped with the system of the invention
• Figure 2 is a side view of a carriage arranged on a beam of the system of the invention
• Figure 3 is a longitudinal view of a carriage arranged on a beam of the system of the invention.
• longitudinal direction denotes an axis or direction extending, in operation, parallel to the longitudinal axis of the vessel.
• Such a longitudinal direction is designated by the reference X in FIG. 1.
• transverse direction is meant an axis or a direction extending, in operation, parallel to the transverse axis of the vessel. Such a transverse direction is designated by the reference Y in FIG. 1.
• vertical is meant an axis or a direction extending orthogonally to the longitudinal and transverse axes, that is to say parallel to the vertical axis of the vessel. Such a vertical direction is designated by the reference Z in FIG. 1.
• Figure 1 shows the rear part of a ship 1.
• the vessel has a hull 2.
• a thruster (not shown) is attached to a first end of a shaft line 3.
• the shaft line 3 passes through the hull 2 and is attached at its second end to an assembly.
• geared motor (not shown).
• the shaft line 3 is supported by at least one bearing 4, 5. In the embodiment of Figure 1, there are two bearings 4 and 5.
• the shaft line 3 is partly on the outside of the hull 1 and partly on the inside thereof, these two parts being separated by a stuffing box 6 ensuring the tightness of the hull passage.
• the shaft line 3 is positioned below the hull 2. That is to say that, along a vertical axis, the ship is oriented as shown in Figure 1. Thus, the hull overlooks tree line 3.
• the device of the invention is used, a system for laying and removing a shaft line from a ship.
• the system comprises two beams 7 and 8 positioned below the tree line 3, according to the previous convention.
• the system includes one or two beams depending on the size of the vessel and the configuration of the bearings of the shaft line.
• the vessel 1 is in a hull basin 9.
• the hull basin 9 allows the vessel to be received afloat and then, once closed, the basin to be emptied so that the vessel is dry. .
• Tins are blocks, usually made of wood, which are placed under the central part of the ship 1, also called the keel, stacked in columns at regular intervals.
• the tins can also be used to support equipment disposed in the hull basin 9 such as the handling system of the invention.
• each beam 7, 8 is placed on tins for example 10, 11 and 12, which facilitates the installation of the system for laying and removing the shaft line while avoiding adding to the hull of the ship additional attachment points.
• each beam is connected to the hull by first suspension means in the form of stays.
• the beams 7 and 8 are positioned between each of the bearings 4 and 5 and between the shell passage and the bearing closest to the latter.
• the system further comprises at least one carriage and for example four designated by 13, 14, 15, 16 in this figure, mounted movable in translation along the axis of the beam on each beam.
• each carriage 13, 14, 15, 16 comprises wheels, for example 17 illustrated in Figures 2 and 3, which are in contact with the beam 7, 8, which allows a translational movement between the carriage and the beam .
• Each carriage 13, 14, 15, 16 can take at least two states and switch from one to the other: a deployed state and a retracted state.
• the carriage 13, 14, 15, 16 is coupled to the shaft line 3 so as to support the weight of the shaft line 3, and more particularly to bring the shaft line into a position where it is coaxial with its bearings 4, 5.
• connection between the carriage 13, 14, 15, 16 and the shaft line 3 can be made by interface means 18, illustrated in Figures 2 and 3, for example a cradle providing the friction coupling with the line tree.
• the cradle can be made of wood.
• Said interface means 18 can be arranged at the end of a cylinder 19 illustrated in Figures 2 and 3, attached to the carriage and the action of this cylinder 19 allows to switch from one state to the other.
• the interface means 18 are arranged so as to be in contact with the shaft line.
• the handling system then supports the weight of the shaft line 3 in place of the bearings 4, 5.
• each beam also comprises transverse, longitudinal and / or vertical adjustment means 20, 21, 22, 23 illustrated in FIG. 1.
• These means 20, 21, 22, 23 can take the form of slides. between the interface means and the carriage or else adjustment screws.
• These adjustment means 20, 21, 22, 23 make it possible to finely adjust the position of the beams 7, 8 with respect to the tins 10, 11, 12 on which they rest and thus to adapt to any type of vessel and to improve alignment of the shaft line with its bearings.
• the carriage may further include means in the form of a brake.
• brake-shaped means make it possible to block the relative movement between the carriage 13, 14, 15, 16 and the beam 7, 8, thus making it possible to avoid an unwanted movement of the carriage 13, 14, 15, 16 during the maneuvering the shaft line 3 or when the carriage 13, 14, 15, 16 is moved empty to put it back into position.
• each beam may have a length of between 6 and 14 m, so as to be able to position itself between the landings while ensuring a sufficient guide length for any type of ship such as a frigate or an aircraft carrier. .
• the beams 7, 8 are substantially parallel to the axis defined by the alignment of the centers of the bearings 4, 5 and the hull passage.
• the system also comprises, for example, a lifting means 24 illustrated in FIG. 1.
• This lifting means 24 is arranged above the shaft line, according to the previously established convention, and between the transom of the ship and the landing. furthest from the hull passage.
• This lifting means 24 allows vertical movement of the shaft line 3 and is arranged so as to dispose and / or remove the shaft line 3 from the carriage 13, 14, 15, 16 in the deployed position.
• the lifting means 24 is connected to the shaft line 3 in order to perform the last maneuvers, respectively the first, to lengthen the shaft line 3 to the ground in a vertical movement, respectively lift the tree line 3 from the ground.
• the lifting means 24 comprises for example a cross member 25 on which are fixed two hoists 26, 27.
• these hoists 26, 27 can be associated with slides allowing translation along the cross member, giving a degree additional freedom to maneuver the shaft line 3.
• the lifting means 24 is for example suspended by second suspension means in the form of guy ropes 28, 29 connected to the hull 2 of the ship 1.
• the line handling system of a ship's shaft is operated according to the following steps for the removal of the shaft line.
• At least one carriage 13, 14, 15, 16 per beam 7, 8 is brought as close as possible to the hull passage and then passed to the deployed state so as to be coupled to the shaft line 3 .
• This movement is controlled by retaining tree line 3.
• the shaft line 3 is braked in position, either by an independent device, or by means of brake form of at least one of the coupled carriages 13, 14, 15, 16.
• the non-braking carriages 13, 14, 15, 16 are decoupled from the shaft line 3 by entering a retracted state.
• the lifting means 24 disposed is fixed on the shaft line 3. This allows the shaft line 3 to be placed horizontally at the bottom of the basin once it is disengaged from the last level 4, 5.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Architecture (AREA)
• Structural Engineering (AREA)
• Robotics (AREA)
• Ship Loading And Unloading (AREA)
• Jib Cranes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=72801593

Family Applications (1)

Country Status (3)

Citations (1)

Family Cites Families (2)

• 2020
  • 2020-06-08 FR FR2005947A patent/FR3111114B1/fr active Active
• 2021
  • 2021-06-07 EP EP21731127.3A patent/EP4161831A1/de active Pending
  • 2021-06-07 WO PCT/EP2021/065116 patent/WO2021249911A1/fr not_active Ceased

Patent Citations (1)

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