KR810001197B1 - Ship's docking plant - Google Patents

Abstract

The floating dock adjoins a permanent quayside and is joined to it by a bridge(12). The dock forms a caisson which is anchored at the outer end(18). The end nearest the quayside supports a building containing the necessary equipment for the work to be carried out. The dock(14) is at the seaward end off the floating platform. An overhead gantry crane spans the dock which can be closed by means of a dock gate. The dock has a base which may be raised or lowered to accommodate ships brought in for repair, without interfering with other repair facilities.

Description

Ship docking plant

1 is a perspective view of a ship docking plant according to the present invention.

2 is a cross sectional view of the docking plant upon entry of a remarkably transverse ship.

3 shows a nearly completed docking operation beginning with FIG.

4 is a longitudinal sectional view of the docking plant when docking a ship inclined forward and backward from the stern.

5 is an enlarged view showing details of the guide means at the inner end of the docking portion.

6 is a cross-sectional view taken along line IV-IV of FIG. 1, with the docking member submerged in water.

FIG. 7 is a sectional view along line VII-VII of FIG. 1.

8 is a deformation of the chain original forming portion of FIG.

9 is a view showing the guide for the eighth conductor, seen from outside the platform.

10 is a reduced view of a docking plant with two docking members.

11 is an enlarged cross-sectional view of a modification of the plant of the present invention, in which one longitudinal side is designed as a pier and a crane is installed therein.

The present invention relates to a ship docking plant.

Repair and maintenance work of the hull is usually carried out in a sub-election. The election shall have the capacity to float the ship on which the cargo has been loaded and shall have a bottom and two long side walls, dimensioned by the largest ship to be handled.

The sidewalls become a major obstacle when working in the dock, making it difficult to move the hull to or from the workplace below, and the brick also hinders the use of machines, for example to clean and paint the floor.

Instead of these obstructive sidewalls, around the member forming the dockable dockable base, it has a sufficient area to provide the required stability and provides a large workplace immediately adjacent to the lifted vessel and facilitates access from at least three sides. It has been proposed that a horizontal platform deck be installed.

The ship docking plant according to the present invention is provided with a floating platform for providing a workplace that surrounds a rectangular docking member having a drain tank and a flat deck on three sides (two longitudinal sides and one transverse side). The docking member is characterized in that it is adapted to be raised from its working position so that its deck is flush with the workshop and lowered to a position that allows entry and exit of the vessel at the fourth side.

The platform is a structure that supports the docking member and its hull so as not to lose their stability when vertically moved.

In many cases, some damage requires attention in the handling of ships that are markedly transversely slanted or trimmed back and forth at the stern or bow. In order to avoid harmful local stresses on the ship or docking member, it is desirable to keep the docking member in a position consistent with the bottom of the ship, thus preliminary step of keeping the ship in an even keel. Prior to the start of the phosphorous ascent operation, a large area between the docking member and the bottom is brought into contact with each other.

Such work presupposes some mobility between the docking member and the platform, and according to the invention, the docking member is arranged to cooperate with the side by side of the platform by guide means at its inner transverse side. The guide means has a guide member having a T-shaped cross section of one of the parallel sides on a vertical guide channel, and the vertical guide channel surrounds the guide member on the other of the sides.

The guide means and channel are adapted to allow the docking member to be positioned at different angular positions with respect to the longitudinal axis and / or the transverse axis through the guide member.

For precise placement of the lowered docking member, the longitudinal side of the docking member is connected to the platform by a number of chain winches. At least some of the winches must be reversible and the chain is formed in an endless loop so that the docking member can be pulled downward for adjustment. Preferably, the docking member is provided with a maintenance tunnel extending in the longitudinal direction from the center, and the tunnel at the inner end of the docking member through the vertical tower structure has a water level when the docking member is completely submerged in water. It's high enough to stay above.

The branch of the platform is designed such that the gravity shift point of each branch is located outside the geometric centerline of the branch when calculated from the docking member, and the pressure upwards when the docking member is fully supported. It is designed in such a way that it has a protrusion extending outwardly below the bottom of the platform branches to exert the pressure.

The platform supports the workplace near the inner end of the docking member and is adapted to be used as a wharf with crane, along at least one of its longitudinal ends.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The plant of FIG. 1 is suitable for ship maintenance but can of course also be used to build new ships.

The plant comprises a U-shaped floating platform 10, the platform consisting of pontoons in a known manner.

In addition, the platform is equipped with a valve and a pump (not shown) so that the platform can be maintained at a level and appropriate level by trimming it with water in a conventional manner.

The base of the U is directed towards the embankment 11, allowing vehicles to travel between the embankment and the platform by a segmented ramp 12 o'clock. The platform may be connected to the embankment 11 at one of the longitudinal sides, as indicated by the dotted line 13. The end of the platform away from the bank is secured by suitable fastening means, two of which are marked 18. A rectangular opening is formed between the U-shaped branches, and a docking member 14 is provided in the opening. In contrast to the conventional manner, the docking member has no sidewalls and is arranged in such a way that it can be raised to a position parallel to the peripheral portions of the platform deck.

Thus, the portions of the platform deck form workshops 15 and 16, respectively, along the longitudinal side of the docking member, and the workshop 17 at the inner end of the docking member. The repair shop 19 is separated from the docking member 14 but is arranged in alignment with the repair shop 19, which has a shop and an office.

Portal crane 20 spans workshops 15 and 16 as well as docking member 14, and can travel the entire platform along track 21 to repair shop 19. The roof of the repair shop consists of laterally active members, which provide an opening for transporting machinery directly from the anchored ship to the repair shop or vice versa.

The docking member 14 is guided by the supports facing down from the platform upon lifting. The supports are of box-like structure, the box-like structure being arranged along the side of opening 3 between the branches of the platform.

As indicated in FIG. 2, it may be necessary to accommodate a severely sloping vessel, and FIG. 4 shows that there may be occasional significant back and forth slopes. Such inclinations in which the ship deviates from its normal position often occur simultaneously, at which point the docking member should be versatile and widely adjustable when in the lowered position. This is achieved according to the invention by connecting the platform with the inner end of the docking member by means of vertical guide means installed in the center. The docking member is guided more freely with respect to the platform along its longitudinal side. In addition, the docking member can be adjusted by a plurality of chain winches, the chain winches being damaged by the docking member to better protect the docking member than by simply trimming the docking member by injection or removal of ball-ast water. It makes it possible to place it in the position for.

In addition to forming workshops 15, 16 and 17, the platform provides support for a number of workshops around the anchored vessel. Thus, the platform has a significant drainage, in which small workshops, washbasins and staff rooms, machinery storage rooms and the like for dock operation can be installed, as well as tool and spare accessory storage and simple repairs.

The platform also has a number of tanks for receiving ballast water, sewage, tree water and oil from the moored vessel. The platform encloses the docking member in a U-shape and has two parallel branches 50, 51 (FIGS. 2 and 3). The docking members shown in FIGS. 4 and 5 are connected to the platform by guide means, the guide means comprising a guide member 52 provided with 53 support structures directed downward from the platform. The guide member has a head 56 attached to the neck portion 55 and is made of a stainless steel alloy having high strength and corrosion resistance. The docking member 14 has a vertical channel 54 at the center of its inner transverse end, the vertical channel enclosing the head 56 of the guiding means and simultaneously with the docking member in the longitudinal and transverse directions with respect to the horizontal plane passing through the guiding means. Allow to move in the direction.

The docking member is composed of a plurality of tanks 57, 58, 59 and 60, and at least two of them are preferably provided at each side of the central maintenance tunnel 61 extending in the longitudinal direction of the docking member. The tanks, in the longitudinal direction of the docking member, are divided into several chambers with means for supplying and discharging ballast water in such a way that a satisfactory distribution of drainage forces is obtained, and the transverse of the vessel to be anchored. It is possible to adapt the docking member to inclined, back-to-back, hogging and sagging positions.

Conduits 63-66 and ballast water discharge pipes 62 for maintenance fluids and electricity such as compressed air, gas, steam, fresh water and brine are located in the maintenance tunnel, and pumps and valves for ballast water are provided in the maintenance tunnel. It is accessible from. When filling and emptying tanks 57-60 it is necessary to vent air from the tanks and to infuse them. In addition, exhaust conduits 67 and 68 are installed in the maintenance tunnel. Maintenance fluid conduits 63-66 are connected to the consumer of the vessel anchored by a watertight man-hole 69.

The inner end of the docking member is provided with a communication tower 70 having a height sufficient to extend above the water surface when the docking member reaches its lowest position, and at the top of the tower, not only the support and launching of the docking member, There is a cockpit 71 that monitors the docking member's adjustment to the horizontal plane. The communication tower makes it possible to access the maintenance tunnel irrespective of the position of the docking member and to supply current to the pump motor by the same method. The tower is also connected to maintenance fluid conduits 63-66.

The guide means 52-54 at the inner end of the docking member 14 ensure axial positioning with respect to the platform, but it is preferable to guide the docking member laterally. For that purpose, transverse guide members 73,74 are provided adjacent to the outer ends of the platform branching portions.

The guide members 73 and 74 are formed in a box-like structure like the support 53 of the inner end of the docking member, and the protrusions 75 are provided on their tops, and the protrusions 75 are inserted into the engaging grooves of the platform branches.

These guide members 73, 74 are held in their respective positions by their inherent buoyancy.

The guide members 73, 74 and the support sleeve 53 have, at their lowermost ends, an inwardly directed projection 76 which prevents the docking member from accidentally sinking far below. The guide members 73 and 74 are connected to each other under the docking member by the side beam 77. Thus, the lower ends of the guide members 73, 74 are held in a constant position with respect to the captive, i.e., the outward force and inward force acting on the guide members are eliminated. The horizontal beam 77 is designed as a box-shaped structure and is coupled to the guide member in the coupling groove and the coupling protrusion.

The connection between the constituent members may be further secured by the chain.

In order to further support the lower ends of the guide members against outward forces, a series of piles 86 are embedded in the seabed just outside of each guide member. As the surface changes, the platform moves in its axial direction because its inner cross section is fixed to the embankment. Thus, the pile 86 has a length sufficient to adjust such axial motion.

Fenders 78 are provided on both sides of the docking member 14 to cooperate with the guide members 73 and 74. These fenders are made of a salt resistant material, the outer surface of which is formed as part of an arc on the longitudinal middle surface of the docking member. Thus, the docking member can be moved upward or downward regardless of the transverse slope or the front and rear slope.

As noted above, the docking member is divided into a plurality of tank chambers, which makes it possible to adjust the position with respect to the horizontal plane. At least two winches 79 are provided along each longitudinal side of the docking member for careful positioning of the docking member. These winches are of the same type as conventional mooring winches and are connected to the docking member by chain 80, which winches are provided with remote control means driven by an electrical or hydraulic device and controlled from the cockpit 71.

As a first step of the docking operation, the winches tighten the lowered docking member in contact with the ship's bottom structure. However, it is an important feature to maintain a stable state by physical force when a vessel including a docking member loses its stability just before the ascending operation is finished.

The platform branches 50, 51 are designed to withstand the high local loads caused by loads and transport vehicles carried from the portal crane 20. At such a branch the center 81 is located outside of the geometric centerline, calculated from the longitudinal inner side of the branch. Such a center of gravity is obtained by designing the bottom plate 82 inclined downward outward. By the shape of such a tank, only a small amount of water or oil will remain when the tank is empty.

Protrusions 83 are provided along the lower edges of the longitudinal and inner transverse side portions of the docking member 14, and the protruding portions 83 extend to the transverse inner side of the platform and below the branches 50 and 51. The protrusion acts on the platform from below when the platform is in a fully raised position due to the excessive movement of the docking member, allowing the platform to remain in a flat position horizontal to the docking member despite the local load.

Lower wall 84 extends along the outer longitudinal end of the platform. The wall is about three meters high and acts as a windshield for workers working on the platform. Several workshops and offices are installed inside the walls and are accessible via door 85 directly from the workshop. Since the rail 21 for the portal crane can be raised above the work deck, the risk of accidents caused by the movement of the crane is reduced.

The platform is anchored by a chain or connected to a levee.

It is possible to install a pile instead of a chain on the outside of each platform branch to prevent the platform from leaving the bank.

At least some of the chain winches installed along each longitudinal end of the docking member can be reversed to prevent the docking member from moving upward uncontrollably due to excessive local drainage, and the chain 80 is 8 degrees and 9 degrees. It is formed of an endless loop 80a as shown in FIG.

The chainroof 80a is guided in a bracket 85 protruding downward from the platform, which loop is usually freely suspended from the lower end of the bracket. The chain winch is provided with a sprocket wheel, like an anchor winch, so that it is possible to pull the docking member downward for adjustment. Relatively little force is required to move the docking member to its proper position.

As shown in FIG. 10, the platform 10a may be designed to be H-shaped, such that the workshop 19 may provide two docking members 14 positioned between the docking members. Portal crane 20 can be used for its docking members.

11 shows an enlarged view of the slightly deformed plant according to FIG. 10. Here, the platform 10a, the docking member 14 and the portal crane 20 are as described above. The longitudinal side of the platform away from Return 13 is designed as a dock for the ship's design and has rails for crane 32. As in the previous embodiment. The outer ends of the platform are reinforced by a box structure 33 deeper than the main part of the platform and the box structures can also be used for warehouses, offices, and the like.

In this example, the portal crane 20 needs to span only one of the branches of the platform and the docking member, and the dock crane 32 has a long jib that occupies at least a portion of the docking member.

When the distance between the outer ends of the branches 50, 51 is large, it is advantageous to install a bridge structure that can be easily disassembled outside the docking member. Such bridge structures may be designed like floating pontoons and may have running tracks for communication between workplaces 15 and 16.

Claims (1)

A floating platform 10 having a flat deck is installed to provide a workplace 15, 16, 17 surrounding the opening along three of its sides with a rectangular opening in between, and docked with a flat deck. The member 14 is housed in the opening so that its deck rises to the same height as the work site and allows the vessel to enter and exit the fourth side of the platform when it is raised, with multiple tanks 57-60 and In addition, a means for injecting and discharging water into the tank for lifting the docking member is installed in the docking member, the maintenance tunnel 61 is installed in the center of the docking member in the longitudinal direction, and through the maintenance tunnel And a top structure (70) having a height sufficient to be on the water surface even when the docking member is at its lowest position is installed on the transverse side of the docking member.

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