RU2615026C1 - Floating transfer dock - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: floating transfer dock includes a ballastable pontoon (pontoons) with the ballast system and the abutments and towers, as well as additional ballastable pontoon rack. Dock in niches or spaces between pontoons is equipped with limiters and swivel supports and pontoon rack is made with the guide posts. The dock holdback on an even keel during the knurl-transfer of the ship from the shore groundway on the dock is carried out by simultaneous pumping liquid ballast from the ballast tanks with the vessel trolley-transporter movement.

EFFECT: transmission dock higher operating performances.

3 dwg

Description

The invention relates to shipbuilding, and in particular to floating transfer docks used to lift vessels from the water to the coastal slipway or to lower the vessels into the water from the coastal slipway.

One of the known devices used for raising (lowering) ships is a transmission ship-hoist, consisting of a floating dock, an additional ballastable pontoon-flyover with rail tracks, pivotally connected by frame racks to the floating berth of the floating dock. (AC 1326497, class B63C 1/02, publ. 30.07.87).

The disadvantage of this technical solution is the need to use a pontoon-flyover sufficient strength to perceive bending moments from the weight of the vessel and its own weight, while significant structural changes in the design of the dock itself will be required to change the height of the pontoon-flyover.

Another known device for launching (raising) a ship into the water is a transfer dock, consisting of a ballastable pontoon (pontoons) and towers, as well as an additional ballastable pontoon-flyover with supports protruding from the bottom, fixing the pontoon-flyover at various heights and calling into the inter-pont spaces or wells of the dock pontoon when the dock is ascended or submerged (RF patent 2310578, class B63C 1/02, publ. November 20, 2007).

A significant drawback of this technical solution is the presence of underwater supports, which have a high cost and material consumption, the need to perform underwater work during their construction, as well as the complex design of the pontoon pontoon support latches.

One of the known analogues chosen as a prototype is a floating transfer dock, consisting of towers and a main pontoon, made with L-shaped bottom niches, in which pivot bearings are pivotally mounted, as well as an additional pontoon-flyover with rail tracks (AC 1437295, C. B63C 1/02, publ. 15.11.88).

The main disadvantage of this technical solution is that the rotary supports in the niches of the bottom of the dock must withstand significant loads from the mass of the dock itself, the pontoon-flyover and the vessel. Another disadvantage is the inconvenience of servicing these pivot bearings due to their underwater location. Along with this, in order to fully support the rotary supports on the seabed, the dock with the vessel at the coastal slipway should be installed on the prepared flat bottom surface.

The problem solved by the invention is the improvement of the transfer dock, capable of joining the horizontal rail tracks of the dock and the coastal slipway with its relatively high elevation above the water mirror and relatively low pontoon-flyover without bearing on underwater supports.

The problem is solved due to the fact that the floating transfer dock contains a ballastable pontoon (pontoons) with a ballast system and a coastal support and towers, as well as an additional ballastable pontoon flyover, while the dock in niches or inter-pont spaces is equipped with limiters and swing supports, the pontoon the overpass is made with guide racks. The dock is held on an even keel during rolling-transfer of the vessel from the coastal slipway to the dock by synchronously pumping liquid ballast from the ballast compartments as the train moves.

A floating transfer dock can be made without shore support.

The technical result from the use of this invention is to expand the operational capabilities of the transfer dock, reducing the height of the dock and pontoon-flyover, reducing material consumption and reducing construction costs in the manufacture of underwater supports.

In FIG. 1 shows a floating transfer dock, side view, in FIG. 2 - a floating transfer dock with an overpass installed on vertically exposed swivel bearings, cross section, in FIG. 3 - the same, with a flyover installed on the dock dock.

The floating transfer dock consists of a ballastable pontoon (pontoons) 1 with a ballast system (not shown conventionally in Fig.) And a coastal support 2 and towers 3. An additional ballastable pontoon platform 4 with horizontal rail tracks 5 is installed on the ballastable pontoon (pontoons) 1 . In the pontoon of the dock there are niches 6, and between the pontoons of the multi-pont dock there are gaps 7. In niches 6 or gaps 7 there are stops 8 and pivot bearings 9. The additional pontoon rack 4 is equipped n guiding racks 10, and for the possibility of filling (draining) the internal compartments with seawater, it has kingstones 11. At the dock installation site there is a coastal slipway 12. The vessel 13 is on slipway carts 14 or dock-supporting device 15 (balkon chairs, kilblocks) (fig. . 1, 2, 3).

The launching of the vessel as follows.

A dock with an additional ballastable pontoon-overpass 4, mounted on vertically exposed swivel supports 9, the guide racks 10 of which are located between the stops 8 in the niches 6 or in the inter-pont spaces 7, is installed, resting on the shore support 2 on the shore stock 12 along the axis of the slipway so so that the heads of the horizontal rail tracks of the slipway 12 and the additional ballastable pontoon-overpass 4 are at the same level. The vessel 13 on slipway bogies 14 is rolled onto an additional ballastable pontoon overpass 4, while holding the dock on an even keel by synchronously pumping liquid ballast from the ballast compartments of the dock as the train moves to the pontoon overpass 4. After that, the vessel 13 is transferred to the dock supporting device 15. Part of the ballast is pumped out of the pontoon (pontoons) of 1 dock, after which the surfaced transfer dock with the vessel is transferred to the dock pit (not shown conditionally) and unfastened.

Next, the pontoon (pontoons) of 1 dock ballast evenly. The dock plunges to draft, in which the empty additional ballastable pontoon platform 4 with the vessel 13 floats up, and the load on the pivot bearings 9 is reduced to zero. At the same time, the guide racks 10 in the niches 6 or at the inter-pont intervals 7 rise upward, sliding between the stops 8 and not allowing the additional ballasted pontoon-flyover 4 to shift with the vessel 13 relative to the dock.

Freed from the load, the rotary bearings 9 take the ballast and, turning around their axis, are removed in the niches 6 or intercontinental spaces 7, taking a horizontal position. The dock pops up, an additional ballastable pontoon platform 4 rests against the docking berth, while the guide racks 10 slide downward between the stops 8. Further, the ascent is made until the bottom of the additional ballastable pontoon-overpass and slipway deck is exposed. Kingstones 11 are opened in the additional ballasted pontoon-flyover 4. The dock is immersed, while the submerged additional pontoon-flyover 4 is filled with water and remains on the slipway deck. Vessel 13 pops up.

The ship is raised in the reverse order, while the transition of the pivot bearings 9 from horizontal to vertical without load is carried out by blowing them with compressed air.

The alleged invention allows:

- reduce the height of the dock pontoon and, accordingly, the depth of the dock pit due to the possibility of placing the pontoon-flyover in the upper and lower positions and, therefore, reduce material consumption;

- to maintain the position of the pontoon-flyover with the vessel relative to the dock during the launching and lifting of vessels through the use of guide racks and limiters;

- carry out the descent (lifting) of ships from the shore, ensuring the docking of the horizontal rail tracks of the dock and the coastal slipway with its relatively high elevation above the water mirror and relatively low pontoon-flyover without bearing on underwater supports and, accordingly, their construction.

Claims (1)

A floating transfer dock containing a ballastable pontoon (pontoons) with a ballast system and a coastal support and towers, as well as an additional ballastable pontoon flyover, characterized in that the dock in niches or in between the pontoons is equipped with stops and swing supports, the pontoon flyover is made with guides racks, and holding the dock on an even keel when rolling the ship from the coastal slipway to the dock is carried out by synchronously pumping liquid ballast from the ballast compartments as the ship progresses Yes.

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