RU2284277C2 - Ship for raising sunken objects - Google Patents

Abstract

FIELD: raising sunken objects.

SUBSTANCE: proposed ship has two hulls with transversal beams connecting them; these beams are supported by hulls in their CL and are mounted on foundations; beams are secured on hulls by means of flexible couplings; located on beams are cargo-hoisting units. Each beam is made in form of two parallel vertical walls rigidly interconnected together in extremities; each beam is articulated to hull by means of upright secured on foundation and located between walls of beam.

EFFECT: simplified construction; extended operational capabilities.

4 dwg

Description

The present invention relates to shipbuilding and for the design of ships for lifting sunken objects.

A catamaran is known in which a pontoon is located in the inter-hull space having a buoyancy control system (see patent RU No. 2051837, class B 63 C 7/02). The sunken object, the pontoon and the catamaran body are connected by lifting cables. The rise of the sunken object is carried out in stages, by several dives - surfacing the pontoon and fixing the object at each stage at a new level with the help of cables. The process of lifting a sunken object using the described vessel is difficult and unreliable.

Closest to the claimed technical solution is a ship of two hulls, interconnected by transverse beams, in which the ends are fixed using special devices in the towers (supports); the latter are placed on the diametrical plane of each of the buildings (see US patent No. 2272785, CL 144-44). Special devices allow you to adjust the elevation of the beam above the hull and absorb random loads along the beam. It is also possible to move the beam along the width of the body in case it is necessary to change the distance between the bodies.

At the level of the main deck of the hull are interconnected by flexible rods. Hoisting devices for lifting the sunken object are fixed on the beams.

The described vessel of two hulls is characterized by a very complex communication system of beams and the hull of the vessel.

The technical problem to be solved by the claimed invention is directed is to simplify the design and increase the reliability of the vessel for lifting sunken objects.

The task is achieved in that in a two-hulled vessel with transverse beams connecting these hulls and fixed to them by means of detachable ties, resting on the hull along their diametrical plane by means of foundations, and also equipped with lifting devices, each beam is made in the form of two parallel vertical walls, rigidly interconnected at its extremities, connected to the body pivotally by means of a rack fixed to the foundation and located between the walls of this beam, and, chrome of detachable connection are flexible.

The invention is illustrated by drawings.

Figure 1 shows a top view of a two-hull vessel in working condition with a maximum clearance (C ₀ ) between the hulls.

Figure 2 presents a section aa of figure 1.

Figure 3 shows a top view of the vessel in working condition with reduced clearance (C ₁ ).

Figure 4 presents a top view of the vessel inoperative (clearance is absent, C = 0). In this condition, the vessel may be at a sediment or moving to a new place of work.

The vessel for lifting sunken objects includes two hulls 1, which are interconnected by transverse beams 2 (figure 1). The beam 2 on each of the buildings 1 rests on the foundation 3, mounted on the housing 1 along its diametrical plane (DP, figure 1). The beam 2 is made in the form of two vertical parallel walls rigidly connected to each other at the ends of the beam 2.

On the foundation 3 are fixed racks 4 (figure 2), which are pivotally connected to the beams 2. Their articulated connection is created by the walls of the beam 2 and, for example, removable pins 5. The pins 5 are inserted into the holes 6 made in the walls of the beam 2.

The connection of the beam 2 with the housing 1 is provided both by means of the rack 4 and the foundation 3, and by means of flexible connections, for example, cables 7 (Fig. 1, 2, 3). (Figure 4 shows the use of cables 7 as links between the hulls 1 of the vessel).

Each beam 2 is equipped with a lifting device, for example, in the form of a winch 8, equipped with a mechanism (not shown conventionally) for its movement along the beam 2. The lifting of the sunken object is carried out using flexible rods 9 (figure 2).

On the beam 2, at its tip, a lifting-and-release inflatable wheel 10 is fixed (Fig. 2); it serves as a support for the beam 2 in the case (in the process) of its movement relative to the housing 1.

The vessel is used as follows.

Cases 1 are installed with clearance between them (Fig. 1). Each beam 2 is pivotally mounted on the rack 4; in this case, the beam 2 rests on the foundation 3. The hinge connection of the beam 2 and the rack 4 is provided by installing 6 pins 5 in the holes. In the case of maximum clearance between the casings 1 (Figs. 1, 2), one pin 5 is used to create the hinge connection. Each beam 2 is attached to the housing 1 also using cables 7.

After fixing the beams 2 on each of the hulls 1, the relative position of the latter on the water surface (in plan) becomes fixed, and the vessel is considered prepared for work.

Then the vessel is installed, for example, using anchors on the surface of the reservoir in such a way that the sunken object is under the gap between the hulls 1. The object is lifted using winches 8 after fixing their position on the beams 2 (latches are not shown conditionally).

At the final stage, a vessel with an object raised from the ground and held between the hulls 1 is towed, for example, to the place of disposal of the object.

In the practice of using the vessel, a case is possible when, for example, to reduce mechanical stresses in the beam 2, the clearance between the hulls 1 should be reduced.

Reconfiguration of the vessel in order to reduce its clearance is performed before the start of the lifting of the sunken object. The decrease in clearance from the value of C ₀ (figure 1) to C ₁ (figure 3) is as follows.

At the first stage, on one of the buildings 1 (conditionally - the case "A"), the beams 2 are released from the cables 7 and pins 5. In addition, on the case "A" under the tip of each beam 2 as its temporary support the wheel is brought (lowered) 10 and thereby a gap is created between the beam 2 and the foundation 3. Then the building "A" is pulled to another building (conditionally - the building "B") at a distance (C ₀ -C ₁ ) / 2 and each beam 2 from the wheel 10 is lowered ("transplanted") to the foundation 3. In addition, each beam 2 on the housing "A" is fixed on the rack 4 with pins 5 and is attached to the housing "A" by cables 7 (Fig.3).

At the second stage, case "B" is moved. The procedures performed in this case on the building "B" are similar to those described above (first stage). Case "B" is pulled to the case "A" at a distance of (C ₀ -C ₁ ) / 2. As a result, after the completion of the first and second stages, the clearance and width of the vessel are reduced by (C ₀ -C ₁ ) and the vessel is considered ready to lift the sunken object.

When towing a vessel inoperative over significant distances of the hull 1 can be installed without clearance. Figure 4 shows the vessel after its transformation from the state (view) presented in figure 3, by the relative displacement of the hulls 1 in length and width. Such a connection of the hulls 1 is similar to the site of the operating barges during the formation of the train.

The described vessel is characterized by simplicity of design and reliability. Its operation is advisable in conditions of moderate excitement, for example on inland waterways.

Claims (1)

A ship for lifting sunken objects, containing two hulls and transverse beams connecting them, resting on hulls along their diametrical plane by means of a foundation and fixed to the hull by means of detachable ties, as well as lifting devices placed on the beams, characterized in that each beam is made in the form of two parallel vertical walls rigidly connected to each other at its extremities, pivotally connected to the housing by means of a rack fixed to the foundation and located between the walls of this Alki and releasable connection are flexible.

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