RU2310578C1 - Floating transfer dock - Google Patents

Abstract

FIELD: shipbuilding; equipment for raising the ships onto shore slipway and lowering ships from shore slipway.

SUBSTANCE: proposed dock has pontoon or pontoons to be ballasted and additional pontoon-pier which is also ballasted. Additional pontoon-pier has supports projecting from its bottom which enter inter-pontoon gaps or wells during lowering and raising the dock; these supports are secured at required height by means of retainers located in the said inter-pontoon gaps or in wells.

EFFECT: extended operational capabilities of dock.

3 dwg

Description

The invention relates to shipbuilding, and in particular to devices used for lifting vessels from the water to the shore berth or for launching ships from the shore berth.

The devices used for receiving ships from the shore and launching them onto the water, as well as for receiving ships from the water and transferring them to the shore, are lifting devices or floating transfer docks.

One of the known devices used for raising (lowering) ships is a ship elevator, consisting of a platform in the form of two longitudinal beams interconnected and a set of floats connected by frame racks by means of hinges with supports on the bottom of the reservoir (A.S. 1219449, cl. B63C 3/06, publ. 23.03.86).

This boat elevator has a complex structure.

Another well-known device used for launching / raising ships to water (from water) is a floating transfer dock (A. Kurdyumov, Yu.P. Belyavin and others. “Launching of ships”, ed. ., p.101-107, Vakharlovsky G.A., Kucheryavenko P.F., Buzik V.F. “Modern dock structures for large and medium-sized vessels” ed. “Shipbuilding”, Leningrad, 1968, p. 144-155). The transfer of the vessel for launching (lifting) using the transfer dock is carried out when combining the ways of the slipway and dock. If the slipway deck of the dock is below the level of the slipway, then an additional pontoon overpass is installed on the dock, ensuring the combination of the slipway and dock paths.

With a significant elevation of the coastal slipway above the dock slipway-deck, the height of the pontoon-flyover increases accordingly, which leads to an increase in its metal consumption. In addition, the high center of gravity of the vessel leads to a deterioration in the stability of the dock with the vessel during the process of immersion and ascent.

One of the closest analogues, chosen as a prototype, is a transmission boat elevator, consisting of a floating dock, an additional ballastable pontoon-flyover with rail tracks, articulated by means of frame racks with a floating dock-deck (A.S. 1326497, class B63C 1 / 02, publ. 30.07.87).

The disadvantages of this technical solution, the closest in technical essence to the claimed, are:

- the presence of racks to ensure the stability of the pontoon-flyover with the vessel, which are not designed to carry a vertical load; the load from the weight of the vessel and the pontoon-flyover is transferred to the brackets of the towers, therefore, the pontoon-flyover must have significant strength to absorb bending moments from the weight of the vessel and its own weight due to the greater distance between the supports located on the towers of the dock;

- the vessel during ascent moves along the length of the floating dock, which requires predicting its position in the final state for the center of gravity of the vessel to coincide with the midship of the dock;

- if it is necessary to change the position of the additional pontoon-flyover in height in the transfer dock, the operation will lead to complex structural changes, - it will be necessary to change the position of the brackets on the towers in height and at the same time increase or decrease the length of the racks.

In the present invention, to achieve the desired result is quite simple, changing only the height of the support pontoon piers.

The problem solved by the invention is the improvement of the transfer dock, capable of joining the horizontal paths of the dock and the coastal slipway with a relatively high elevation above the water mirror and a relatively low pontoon flyover.

The problem is solved due to the fact that the floating transfer dock consists of a ballastable pontoon (pontoons) and towers, as well as an additional ballastable pontoon-overpass with supports protruding from the bottom. The pontoons of the multi-pontoon dock are installed at intervals between each other, wells are made in the pontoon of the monolithic dock, and latches are fixed in the above-mentioned wells or at the inter-pontoons to secure the pontoon overpass in height.

The technical result from the use of the proposed invention is to expand the operational capabilities of the transfer dock, reducing the height of the dock and pontoon-flyover, reducing metal consumption and improving the stability of the dock during immersion and ascent.

Figure 1 shows a floating transfer dock with a vessel near the coastal slipway, a longitudinal section; figure 2 is the same, a transverse section, figure 3 is a transverse section on the dock pit.

The floating transfer dock contains a ballastable pontoon (pontoons) 1 and towers 2. On the ballastable pontoon (pontoons) 1 of the dock there is an additional ballastable pontoon rack 3 with supports 4 protruding from the bottom and horizontal tracks 5. In the ballastable pontoon (pontoons) 1 latches 6 are placed There are wells 7 in the pontoon of the monolithic dock, and between the pontoons of the multi-pont dock there are inter-pont spaces 8. At the installation site of the dock there is a coastal slipway 9 and underwater supports 10. The vessel 11 stands on slipway carts 12 or ki loblok 13. For the operation of descent (lifting) of the vessel 11 at a certain distance from the coastal slipway 9 is a dock pit 14.

The launching of the vessel as follows.

A floating transfer dock with an additional ballastable pontoon-flyover 3, protruding from the bottom of the support 4, which is secured by latches 6, is installed on the underwater supports 10 at the shore berth 9. The vessel 11 on slipway carts 12 is rolled onto an additional ballastable pontoon-flyover 3 and transplanted to kilblocks 13. Part of the ballast is pumped out of the ballasting pontoon (pontoons) of 1 dock, and the pop-up transfer dock with the vessel 11 is transferred to the dock pit 14. Ballasting pontoon (pontoons) of 1 dock is ballasting, it is submerged to the level in which an additional ballastable pontoon overpass 3 pops up. The load-released latches 6 are removed, and by pumping part of the ballast from the ballastable pontoon (pontoons) 1 dock, the dock pops up before the bottom of the additional ballastable pontoon-flyover 3 is planted on the ballastable pontoon (pontoons) 1 dock, while protruding from the bottom of the additional ballastable pontoon-flyover 3 supports 4 enter the wells 7 or between the pontoons 8. The additional ballastable pontoon flyover 3 is ballasted, then the ballastable pontoon (pontoons) 1 and the towers 2 of the dock are ballasted until the vessel ascends. the vessel 11 is withdrawn.

The vessel is hoisted in the reverse order, while the dock with an additional pontoon-flyover 3 located on the ballastable pontoon (pontoons) 1 of the dock first pops up before landing of the vessel 11 on the keel blocks 13 and then until the bottom of the additional ballasted pontoon-flyover 3 is exposed, then an additional the ballastable pontoon flyover 3 is drained, the dock is loaded for the possibility of fixing the additional ballastable pontoon flyover 3 with clips 6 in the upper position, then the dock floats, it is transferred to the shore ovomu slipway 9, mounted on the support 10 and U-dock horizontal path 5 additional ballastiruemogo pontoon trestle 3 and shore pile 9. A vessel 11 with a keel blocks 13 transplanted on Stacking trolley 12 and are rolled out on a coastal slipway 9.

Supports and clamps can be made of any material (steel, alloys, etc.).

The present invention allows:

- reduce the height of the dock towers and, accordingly, the depth of the dock pit due to the possibility of fixing an additional ballastable pontoon-flyover in the upper and lower positions;

- reduce metal consumption by reducing the height of the towers of the dock and the height of the flyover;

- improve the stability of the dock with the vessel by reducing the applicants of the center of gravity of the vessel and overpass during the critical period of immersion and ascent.

Claims (1)

A floating transfer dock containing a ballastable pontoon or pontoons and towers, as well as an additional ballastable pontoon flyover, characterized in that the additional pontoon flyover is made with supports protruding from the bottom, entering when the dock is dipped and floated into the intercontinent gaps or wells in the dock pontoon with the possibility of fixing them at different heights with the help of clamps located in the aforementioned gaps or wells.

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