Floating transfer dock

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

 

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

The devices used for the reception of ships from the shore and lowering them into the water, and also to receive vessels from the water and transfer them to the shore are ship-lifting devices or floating gear docks.

One of the known devices used for lifting (descent) of the courts, is the ship, consisting of a platform in the form of two interconnected longitudinal beams and a set of floats connected frame columns by means of hinges with the supports on the bottom of the reservoir (A.S. 1219449, CL VS 3/06, publ. 23.03.86).

This ship has a complex structure.

Another known device serving for descent/ascent vessels on the water (from the water) is a floating gear dock (Kurdyumov A.A., Belyavin P. and others "the Descent vessels" ed. "Shipbuilding" Leningrad, 1966, p.101-107, Vakharlovskii GA, Kucheryavenko PF, Buzik SCI "Modern dock facilities for large and medium ships" ed. "Shipbuilding" Leningrad, 1968, s-155). Transfer vessel for tripping) using the transfer dock is made when combining ways shipyard and dock. If the berth-deck of the dock is below a building berth, dock establish further the recreational pontoon pier, providing a combination of ways a building berth and dock.

With a significant elevation coastal berth on ship-deck dock height of pontoon piers correspondingly increases, which leads to the increase of metal. In addition, high centre of gravity of the vessel leads to the deterioration of the stability of the dock with the vessel in the process of diving and surfacing.

One of the closest analogues, selected as a prototype, is the transfer of the ship, consisting of a floating dock, additional ballasting pontoon-rack with rail tracks, United articulated by frame racks with the boat-deck floating dock (A.S. 1326497, CL VS 1/02, publ. GGO 30.07.87).

The disadvantage of this technical solution that is closest to the technical nature of the claimed are:

- the presence of racks to ensure stability of the pontoon piers with the vessel, which are not designed to carry vertical loads; the load of the weight of the vessel and pontoon rack is transmitted to the brackets of the towers, so the pontoon ramp should be of a sufficient strength for the perception of bending moments on the weight of the vessel and its own weight due to the larger distance between the supports located on the towers of the dock;

- vessel when afloat is moved along the length of the floating dock, which requires forecasting the situation in the final state to match the center of gravity of the vessel with the midsection of the dock;

- if necessary, change the position of the additional pontoon rack height in the gear dock, the operation will lead to a complicated structural changes, it will be necessary to change the position of the brackets on the towers height, and simultaneously to increase or decrease the length of the columns.

In the present invention to achieve the desired result simply by changing only the height of the fixing pillars of the pontoon deck.

The problem solved by the invention is the improvement of the transfer dock capable of docking the horizontal ways of the dock and shore building with a relatively large rise over the water and relatively low pontoon deck.

The problem is solved due to the fact that the floating gear dock consists of ballasteros pontoon (pontoons) and towers, as well as additional ballasting of pontoon piers with protruding from the bottom of the supports. Pontoons mnogotomnogo dock installed with gaps between them, pontoon monolithic dock completed wells, and in the aforementioned wells or between bridge boats intervals installed the latches securing the pontoon pier height.

The technical result from the use of the proposed invention is to enhance operational capabilities predation the th dock, the decrease in the height of the dock and pontoon piers, reducing the metal and improving the stability of the dock when diving and surfacing.

Figure 1 shows the floating gear dock with a ship off the coast shipyard, a longitudinal section; figure 2 is the same cross section, figure 3 is a transverse section on the dock pit.

Floating gear dock contains alastruey pontoon (pontoons) 1 and tower 2. On ballasteros the pontoon (pontoons) 1 Doc installed additional alastruey pontoon rack with 3 protruding from the bottom of the supports 4 and horizontal paths 5. In ballasteros the pontoon (pontoons) 1 posted by clamps 6. In pontoon monolithic dock there are wells 7 and between the pontoons mnogotomnogo dock - between bridge boats gaps 8. In the place of installation of the dock is a coastal stocks 9 and are underwater support 10. The vessel 11 is on the stacker cart 12 or keel-blocks 13. For the operation of the tripping of the vessel 11 at a certain distance from shore berth 9 is dock pit 14.

The descent of the vessel on the water is as follows.

Floating gear dock with additional alastruey pontoon-bridge 3 protruding from the bottom of the support 4, which is fixed by the clamps 6, mounted on the underwater support 10 at a coastal building 9. The vessel 11 on the feeder trolleys 12 roll on facilities is hydrated alastruey pontoon pier 3 and transplanted on the keel-blocks 13. From Ballesteros pontoon (pontoons) 1 dock pump out some ballast and surfaced transfer dock with the vessel 11 is transferred to the dock pit 14. Alastruey pontoon (pontoons) 1 dock ballasteros, he sinks to the level at which additional alastruey pontoon pier 3 POPs up. Freed from the load latches 6 is removed, and by pumping a portion of the ballast from Ballesteros pontoon (pontoons) 1 Doc Doc POPs up before boarding the bottom for more Ballesteros pontoon-racks 3 alastruey pontoon (pontoons) 1 dock with speakers from the bottom of the additional ballasting pontoon-racks 3 support 4 is fixed in the wells 7 or between bridge boats gaps 8. Additional alastruey pontoon pier 3 ballasteros, then alastruey pontoon (pontoons) 1 and tower 2 dock Ballesteros before the ascent of the vessel 11. Surfaced vessel 11 output.

Lift the ship is in the reverse order, with dock with additional pontoon bridge 3 at ballasteros the pontoon (pontoons) 1 Doc who first POPs up before boarding the vessel 11 on the keel-blocks 13 and further to the bare bottoms of additional ballasting pontoon-racks 3, then additional alastruey pontoon pier 3 is drained, an priglushaetsya for fixing surfaced with the vessel 11 additional ballasting Pont is it-racks 3 clamps 6 in its upper position, next, dock floats, he was transferred to coastal stocks 9, mounted on the underwater supports 10 and join the horizontal path 5 additional ballasting pontoon-racks 3 and the coastal building 9. The vessel 11 from the keel-blocks 13 transplanted to a stacker truck 12 and rolls out to the onshore stocks 9.

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

The present invention allows to:

- reduce the height of the towers of the dock and accordingly the depth of the dock pit due to the possibility of fixing additional ballasting pontoon-racks in upper and lower positions;

to reduce the intensity by reducing the height of the towers of the dock and the height of the trestle;

to improve the stability of the dock with the vessel by reducing applicati center of gravity of the vessel and flyovers in the critical period of immersion and emersion.

Floating gear dock containing alastruey pontoon or pontoons and towers, as well as additional alastruey pontoon pier, characterized in that the additional pontoon rack made from protruding from the bottom of the supports, the setting when the immersion and emersion of the dock in the intervals between bridge boats or wells in pontoon dock with the ability to secure them at different heights using the tabs located in between bridge boats above the intervals or wells.



 

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