RU2043257C1 - Method and system for raising sunken object - Google Patents

Abstract

FIELD: raising sunken objects. SUBSTANCE: rope grips in form of self-tightening loops made on deck and provided with clamps and safety devices are lowered from surface ship. Then these loops are brought under sunken object by means of self-propelled submersible vehicle after which ropes are preliminarily tightened up embracing the sunken object. System has self-propelled submerged vehicle and catamaran-type surface ship with cargo-hoisting drums on each pair of which rope with rope grip is secured. EFFECT: enhanced reliability. 3 cl, 4 dwg

Description

 The invention relates to ship lifting operations.

 There is a method of lifting a sunken object, implemented when the system for lifting a sunken object), which consists in the fact that the cable grips are lowered from the fore and aft parts of the deck of the surface vessel by unwinding each inextricable cable from the corresponding pair of lifting drums, after which each cable grip is started at using an underwater self-propelled vehicle under the sunken object, preload the cables and select the latter. Moreover, the said system comprises an auxiliary underwater self-propelled apparatus and a catamaran type surface vessel with a cargo deck, on the hulls of which load-lifting drums are installed in pairs along the vessel, and an indissoluble cable is stored on each pair of drums with the formation of a grip.

 The disadvantage of the mentioned method of lifting a sunken object and the system for its implementation is low efficiency when lifting a sunken object from a great depth, caused by a large amount of underwater technical work.

 The aim of the invention is to increase the efficiency of lifting work.

 This goal is achieved by the fact that in the method of lifting a sunken object, namely, that the cable grips are lowered from the fore and aft parts of the deck of the surface ship by unwinding each inextricable cable from the corresponding pair of lifting drums, after which each cable grip is started using an underwater self-propelled vehicle under the sunken object, preload the cables and make a selection of the latter, each cable grip is formed on the deck of a surface vessel in the form of a self-tightening rope loop to maintain the desired size which is exercised by the clamp and put fuse for samozatyagivaniya hinges on the casing sunken object, wherein the preload is performed while the cable crimp body sunken object. And in the system for lifting a sunken object, which contains an auxiliary underwater self-propelled vehicle and a catamaran type vessel above the cargo deck, on the hulls of which load-lifting drums are installed in pairs along the vessel, an inextricable cable is stored on each pair of drums to form a grip, and above each pair of drums an additional pair of drums with a cable grip, while the shaft of each drum mounted on one hull of the vessel is parallel in a vertical plane to the shaft above above it and parallel in a horizontal plane to the shaft of the drum located on the other hull of the vessel, and the cable grip of each pair of drums is made in the form of a self-tightening loop with a clamp and a fuse for its self-tightening. In addition, each cable grip can be made of silicate orlon threads.

 In FIG. 1 shows a system for lifting an underwater object, a general view; figure 2 is a transverse section of a surface vessel when drowning a sunken object; in FIG. 3 the same when lifting a sunken object; figure 4 cable grip.

 The method is implemented when the system for lifting a sunken object containing a surface vessel 1, made in the form of a catamaran with a cargo deck 2, lifting drums 3, mounted in pairs on shafts 4 along the hulls, and their drives 5.

 The shaft of each lifting drum mounted on one of the hulls of the vessel is parallel in the vertical plane to the shaft of the upstream lifting drum and is parallel in the horizontal plane to the shaft of the other lifting drum located on the other hull of the vessel. Hoisting drums 3 are made with compartments filled when lifting a sunken object, such as a submarine 6, alternately with water. An inseparable cable 7 is stored on each pair located opposite each other on different hulls of the drum vessel to form a cable grip in the form of a loop with a clamp 8 and a fuse 9 for self-tightening. The cable grip may be made of silicate orlon threads. In addition, the vessel 1 is equipped with sensors 10, measuring the tension of the cables 7.

 This system also includes a self-propelled underwater vehicle 11 with a manipulator 12 and operates as follows.

 Each inextricable cable 7 is laid on the cargo deck 2 with the formation of a self-tightening loop, the size of which is more than the cross section of a sunken object, such as a submarine. To maintain the size of this loop, clamps 8 are put on it, and a removable fuse 9 is installed at the bend point. Cable grips are lowered from the bow and stern of the vessel 1 by unwinding each inextricable load-lifting cable 7 from the corresponding pair of drums 3. After that, each cable grip is started at using the underwater self-propelled apparatus 11 under the sunken submarine 6, preload the cables 7 while crimping the hull of this submarine 6 and select the cables 7 with lifting the boats ki 6.

 When lowering the cable grip, the load-lifting drums are rotated by the drive 5, and when lifting, these drums are rotated by alternately filling their compartments with water.

 After lifting the sunken boat 6 to the surface, it can be sprinkled with ship-lifting pontoons 13.

Claims (3)

 1. A method of lifting a sunken object, namely, that the cable grips are lowered from the fore and aft parts of the deck of the surface vessel by unwinding each inextricable lifting cable from the corresponding pair of lifting drums, after which each cable capture is started using an underwater self-propelled device under the sunken object, preload the cables and make a selection of the latter, characterized in that each cable capture is formed on the deck of a surface vessel in the form of a self-tightening cable loop, to maintain the required size of which it is clamped and a fuse is put on to ensure self-tightening of the loop on the body of the sunken object, while the cable is preloaded with a simultaneous crimp of the body of the sunken object.  2. A system for lifting a sunken object, comprising an auxiliary underwater self-propelled vehicle and a catamaran type surface vessel with a cargo deck, on the hulls of which load-lifting drums are installed in pairs along the vessel, an inextricable cable is stored on each pair of drums with the formation of a grip, characterized in that above each pair of drums has an additional pair of drums with a cable grip, while the shaft of each drum mounted on one hull of the vessel is parallel in a vertical plane in the drum located above it and parallel in the horizontal plane to the shaft of the drum located on the other hull of the vessel, and the cable grip of each pair of drums is made in the form of a self-tightening loop with a clip and a fuse for its self-tightening.  3. The system according to claim 2, characterized in that each cable grip is made of silicate orlon threads.

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