BG65385B1 - Floating elevation dock - Google Patents

Abstract

The dock can find application in shipbuilding, ship repairing and the operation of vessels and floating equipment, in particular in the docking of vessels for performing repair works. It ensures docking of vessels at any water level in the water area and high productivity as it can serve several operator positions on the shore. During operation the dock is ôsittingö on the bottom which guarantee sits stability when the vessels are raised. The dock comprises a lower fixed supporting platform (1), on its board side and star board of which pontoons (2) are fixed, and on top of them vertical columns (3, 3.1) are fixed positioned symmetrically on the board side and star board of the dock. Columns (3, 3.1) are connected by bridges (4) in their upper part stretching along the entire length of the dock. Upon the bridges (4), respectively on the board side and starboard, lifting device (5) with ropes (9) are found. For the performance of the lifting operations a mobile load lifting platform (7) is envisaged due to which the dock can operate in ôsittingö position on the bottom of the water area when the vessel is lifted to the level of the operating site on the shore and is transferred to it by means of rail tracks (10) found on them which have trolleys (11) mounted on them onto which the docking vessel (12) is fitted and moved.

Description

(54) FLOATING LOWER DOCK

Technical field

The invention relates to a floating dock and can be applied in the field of shipbuilding, ship repair and operation of ships and floating equipment, especially in the docking of ships for ship repair activities.

BACKGROUND OF THE INVENTION

Traditional floating lifting docks are known, in which the stages of operation are sinking, taking the ship and sailing. Work on the received ship is done on the dock itself, ie there is one job. These docks have low productivity because the dock is busy throughout the repair of the ship. In addition, they are not adapted to transfer the ship to a shore work site and for this purpose are inapplicable in areas where the water level is greatly altered. This way, they cannot serve several jobs ashore.

Also known is the dock, which works on the scheme of sinking, receiving the ship, sailing, standing ashore and delivering the ship to shore [1]. It consists of a pontoon and columns, with a rail road built on the pontoon, with trolleys mounted on the rail to dock the ship. This dock is also built for only one shore workplace, for which it has specially built equipment - columns driven into the bottom and guides to the shore. In addition, the whole dock rises when the ship is lifted.

SUMMARY OF THE INVENTION

It is an object of the invention to provide a floating dock that allows vessels to be docked at different water levels in the water area, while providing high productivity, resulting in the ability to safely serve more jobs, with a lower degree of safety. ship repair facilities and floating facilities.

The task is solved by creating a floating dock that can work like a normal floating dock, but basically it works sitting at the bottom of the water area. The dock includes a lower, fixed, supporting platform, on either side (left and right), on which fixed longitudinal pontoons are mounted, with niches made on the inside. Pump compartments are formed at the back of the platform in the pontoons of the left and right sides, and all other pontoon space is used for ballast tanks. Vertical columns, symmetrically located on the left and right sides of the dock, are fixed to the pontoons. The columns are of the same type, with an open lattice structure, while one of the columns, located on one of the boards in the bow, is completely closed and the control post is located there, as well as stairs for internal communication. For longitudinal stabilization of the columns, they are connected at their upper ends by bridges made of continuous metal beams extending along the entire length of the dock. On the bridges are lifting devices symmetrically on the left and right sides. The bridges, along their entirety, are enclosed by lane fences. For carrying out the lifting operations is provided a movable, lifting platform, located on the lower fixed carrier platform. Thanks to the mobile loading platform, the ship rises to the level of the work platform on the shore and is transferred to it. For this purpose, on the left and right sides, the movable hoisting platform has specially issued and reinforced structures for securing the ropes of lifting devices. Along the loading platform, on the left and right sides, there are railways on which trolleys are mounted to support the docked ship.

The dock according to the invention can be coupled to other similar docks in length, in pairs or threes, allowing the docking of long ships.

The advantages of a floating dock according to the invention are expressed in the following.

Provides docking for ships at any water level in the water area; provides

65385 Bl high performance as it can handle several shore jobs; during operation the dock is seated at the bottom, which provides stability when lifting ships, has no risks of changing the distribution of masses and obtaining a dock trimmer, the leveling of the loading platform with the shore is guaranteed and ensures smooth movement on the ship ashore.

Ship repair can also be carried out on the dock itself, which provides another job.

Explanation of the annexed figures

The invention is explained in more detail with the aid of the accompanying drawings, where:

Figure 1 is an axonometric view of the construction of a floating dock;

Figure 2 is an axonometric view of the lower support platform;

Figure 3 is an axonometric view of the lower platform with pontoons mounted on either side;

FIG. 4 is an axonometric view of the lower platform with pontoons and columns mounted on both sides; FIG.

Figure 5 is an axonometric view of the movable loading platform;

6 is a cross-sectional view of AA from FIG. 1 and depicts a lifting device with a rope for lifting and lowering the upper load platform;

7 shows the positioning of the floating dock, in floating position, ashore;

Figure 8 - sinking the floating dock and getting ready for work;

Figure 9 - positioning of the ship on the floating lift dock and lifting of the loading platform;

Figure 10 - lifting the ship to the level of the work platform;

figure 11 - moving the ship with the carts ashore.

Examples of carrying out the invention

A preferred embodiment of the floating dock according to the invention is shown in FIG. 1, 2, 3, 4, 5, 6. The dock includes a lower stationary, supporting platform 1, on two boards (left and right), on which pontoons 2 are fixed, on the inside of which niches are made 13. On the pontoons 2, a total of eight vertically mounted columns 3, 3.1 are fixed, located four on the left and right sides of the dock respectively. The seven columns 3 are of the same type, with an open lattice structure, while the column 3.1, located on the left side of the bow, is fully enclosed and has a control post and inclined stairs for internal communication. For longitudinal stabilization of columns 3 and 3.1, they are connected at the top by bridges 4 made of continuous metal beams extending along the entire length of the dock. On the bridges 4 are placed twelve pieces of lifting gear 5, made as winches and placed on each side six on the left and right sides. Bridges 4, along their entirety, are enclosed by lane fences 6. For carrying out lifting operations, a movable lifting platform 7 is provided on the lower stationary platform 1. The basic set of the movable lifting platform 7 is transverse and the structure is open ( that is, no lining is provided on the lower and upper sides). On the left and right boards, the platform 7 has specially projected and reinforced structures 8 for securing the ropes 9 of the lifting gear 5. Along the left and right lifting platform 7, there are railways 10 on which carts are mounted. 11 with supports 14 to accommodate the docked ship 12.

Use of the invention

The floating dock according to the invention is used as follows. The dock, when not in use, is in a floating position and is located in an appropriate location in the water area of the repair plant. Where ship 12 is docked, the dock is moored to the appropriate work site A on shore (Fig. 7). Depending on the capabilities and the scheme of operation of the ship repairing plant, this maneuver can be accomplished with the help of a tractor unit or through appropriate mooring operations.

65385 Bl

The dock is positioned and centered on shore A, using special guide structures (not shown in the figures). Mooring to the shore mooring devices. On the mobile loading platform 8 are positioned the trolleys 11 with the supports 14 for docking the ship 12. Shore power supply is provided. Shore communications are being prepared. After the preparatory work is completed, the dock will be submerged (Fig. 8), with the purpose of receiving water ballast into the ballast tanks in the pontoons 2 on the left and right sides with the help of the pumps mounted on the pontoons. After receiving the required amount of ballast, the dock sits at the bottom. The ship 12 to be repaired is then dragged by a tow truck or by means of tow ropes connecting the dock to the ship. Vessel 12 is positioned between columns 3 and 3.1 (Fig. 9). After the final placement of the docked ship 12 at the dock, the lifting of the load-lifting platform 7 begins, whereby the ship 12 rests on the blocks. Lifting is performed with the help of lifting devices 5 located on the bridges 4, the ropes 9 being attached to the protruding and reinforced structures 8 which, when towed, move in the niches 13 of the pontoons 2. The overall control of the platform operation is carried out by control located in column 3.1. During lifting, the proper positioning of the docked ship 12 is controlled. If necessary, at the time of contact of the ship 12 with the supports, the lifting of the lifting platform 7 may be stopped and a normal position of the ship 12 may be carried out on the pre-positioned carts 11 and supports 14. Lifting of the loading platform 7 continues (Fig. 10), while the rails 10 for the trolleys 11 of the lifting platform 7 align in height with the rails (not shown in the figures) on the shore A.

An additional connecting section (not shown in the figures) is then mounted, which is intended to ensure continuity of the track 10. With the aid of a waist or tractor (eg locomotive), the gradual pull of the trolleys 11 together with the ship 12 begins and shifts. from the dock on shore A (Fig. 11) for repair. The movable loading platform 7 is then lowered to the lower stationary platform 1, after which the operation of docking and pulling to its parking lot is performed. The dock is cleared using the ballast system. The water ballast is discarded and the dock is in a floating position. The power cables are unplugged from the shore, the means of communication (similar and similar) are removed, the mooring ropes are rented, and with the help of the tractor the floating dock is moved to its parking lot.

Claims (2)

Claims 1. A floating dock comprising floating pontoons and a rail path on which a ship's loading trolleys are mounted, characterized in that it includes a lower stationary carrier platform (1) on which the pontoons are fixedly mounted on the left and right sides. (2), on the inside of which niches (13) are made, with vertical columns (3, 3.1) fixed on the pontoons (2), located symmetrically on the left and right sides of the dock, respectively, with the columns (3) have an open lattice structure while the column (3.1) is located in the bow and the part of the left side is completely enclosed and there is a control post with mounted ladders for internal communication, the columns (3, 3.1) being connected at the top by extending along the entire length of the dock. bridges (4) on which the lifting devices (5) are symmetrically symmetrically arranged on the left and right boards respectively, with the bridges (4) enclosed by lane fences (6) along their entire length, and for lifting operations being provided. a movable loading platform (7), located on the lower platform female platform (1), the movable hoisting platform (7) having, on the left and right sides, specially projected and reinforced structures (8) for securing the ropes (9) of the hoisting devices (5), and further along the moving one 65385 Bl lifting platform (7), on the left and right sides, rail tracks (10) are mounted on which carts (11) with supports (14) are mounted to accommodate and move the docked ship (12). Dock according to claim 1, characterized in that the bridges (4) are made of continuous metal beams.