SU885101A1 - Catamaran-type cargo vessel - Google Patents

Description

(54) LOADING SHIP OF THE CATAMARIC TYPE

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This invention relates to shipbuilding, in particular, to lifting vessels.

Known lifting ship catamaran type, containing the hull with mounted on them by the power plant and lifting-lowering device and the main system fl.

However, such a vessel has low stability and operational capabilities.

The purpose of the invention is to increase the stability and operational capabilities of a lifting vessel.

To achieve this goal, the lifting and lowering device of the lifting and lowering device of the lifting vessel contains four columns mounted by the vessel with the ability to move in a vertical plane and fitted with lunettes, four supporting rods on the trunnions located in their upper part, and eight brackets with

At the top of each column, one of the lunettes is mounted for movement along the column, four brackets are fixed one on each of the lunettes, and four other brackets are fixed in pairs from the inner sides of the ship hulls, each carrying rod is connected by a pin to one of the brackets lunettes and mates

10 with its lower part with one of the brackets fixed on board the hull.

In Fig.1 schematically shows a lifting vessel, the view from the stern

$ 1 with an emergency vessel lifted from the seabed and mounted on a removable platform lodgement; figure 2 - the same, with the lowered bearing rod with gripping mechanism; on (игig.Z - then

20, at the moment of the seizure of an emergency (sunken) vessel; on. 4 is a node 1 in figure 1; figure 5 - node P in figure 4; figure 6 - hoisting vessel, view

from the side; 7 - the same in terms of; on Fig - the same, the view from the stern during installation (dismantling) of the underwater drilling rig at the bottom of the sea; Fig.9 node W in Fig.6; Fig. 10 shows a lifting vessel, viewed from the stern, when dismantling (assembling) the support column of the marine drilling platform; Fig.11to, side view, during transportation of the support column offshore drilling platform; on Fig - the same, the view from the stern, when transporting semi-submersible floating drilling rig, ki.

The lifting vessel is an autonomous self-propelled floating craft and contains two bearing bodies 1 and 2 rigidly interconnected by the technological platform 3 with the control room 4. It is equipped with tension winches 5 with flexible connections 6 connecting it with mi Sne are shown). Between cases 1 and 2 are installed HecyiJ e rods equipped with a gripping mechanism and made of locks 7 hollow sections 8 connected to each other with trunnions 9. Sections 8 are connected to an air compressor (not shown), through which the buoyancy of the rods (i.e., sections 8) may vary from negative to positive or neutral. Each of the above-mentioned rods is suspended on movable brackets 10 and 11, the first of which is mounted on housing 1 (2) and the second is mounted on an installed lift 12, lunette 13, enclosing a movable column 14 with rails 15. Lower end the columns 14 are provided with a remotely controlled stopper 16 including a spring-loaded rod with a piston 17 (Fig. 4) of the hydraulic cylinder 18, which fixes the chain 19 of the Mechag-feed. of the low mounted in the housing 1 (2) and made in the form of a feeding sprocket 20 (its drive is not shown), covered by the chain 19 stored in the housing 1 (2), and equipped with an additional controllable stopper 21, which is similar in construction to the stopper 16.

In the off position, the chain 19, provided with a hook 22, passes freely in the stopper and the hook 22 is located at a depth n (Fig. 2) from the bottom of the body 1 (2).

The columns 14 are provided at the bottom with auxiliary hooks 23, and the upper ends of these columns are equipped with tilt-and-turn cranes 24. The lunettes 13 can be connected in pairs by trusses 25. The cradle 26 can be mounted on a removable platform 27, and in it is fixed the transported (emergency) vessel 28.

The gripping mechanism is designed as

: forks 29 driven by hydraulic cylinders 30. The opening (gripping) of the forks 29 is controlled by a remotely controlled hydraulic cylinder 31 placed in connecting the lower ends of the supporting rods on the beam 32 of neutral buoyancy.

The rods of the hydraulic cylinder 3I are pivotally connected to breadcrumbs 33, in which the axles 34 of the forks 29 are hinged. The gripping device is illuminated by spotlights 35 and equipped with television installations 36 for observing its operation. Spring with rods 37 provides the working fluid in the hydraulic cylinder 31 at any position of the forks 29.

An autonomous drilling subsea installation 38 (Fig. 8) is equipped with anchors 39, fastening it with the bottom of the sea, lighting and television equipment 40.

The bearing column (support column 41 of the offshore drilling platform 42 with the drilling platform BOOSTER 43 when lifted (FIG. 10) and transported is held by the pickups 44 and loosened by stretch bars 45. It is equipped with fasteners 46 for mounting on the bottom of the sea. neither is the latter equipped with 47 pontoons.

Tacks 44 are also used when transporting the semi-submersible drill platform 48 together with the supports 49.

The auxiliary technical vessel is equipped with an autonomous observational underwater vehicle 50, for example of the Wasp type, and is equipped with propellers 51.

An auxiliary technical vessel is used to lift sunken or sundered technological operations of large-tonnage objects with

Claims (1)

large depths (Fig.1-3); installation at the bottom and lifting relatively light objects, if necessary, varying their location relatively stationary (for the main auxiliary technical vessel (FIG. dismantling (mounting) of the drill rigs support columns (Fig. 10 |, supports, etc., transport by sea of various technical objects. In the first variant of operation, each rod consisting of section 8 is lowered to the seabed from the position when it is supported by pins 9 on both brackets 10 and 11 (Fig. 2) by lift 12 to raise the column 14 Blown to it by lunet 13 with the bracket 11. Since the bracket 10 does not move vertically, the whole rod, supported by pins 9 on the bracket 11, is removed from the bracket 10, which is retracted from the rod by turning about the axis (.Lig.2) its symmetrically made halves. This retraction can also be carried out by horizontal movement of the bracket 10 in guides, which can be equipped with the bottom of the housing 1. Then the column 14 is lowered down a distance equal to the length of the boom section 8, return the bracket 10 to its original position with subsequent down By using column 14 with a rod, the weight of the latter is transferred to this bracket. As a consequence, the bracket 1 1 is released from the interaction with the rod and is removed from it similarly to the bracket 10. The next section 8 is fed to the bar from the top of the crane 24 and connected to it by means of a lock 7. With the help of the truss 25 several pairs of sections 8 can be fed to the rods at the same time. At this time, the column 14, together with the rest 13, is raised up until it becomes possible to connect the bracket 11 to the upper end of the connected rod section. Further, the procedure for attaching sections 8 and lowering the rods continues in the same order. When approaching the gripping fur “ism” to an object located at the bottom of the sea, for example, the sunken ship 28, based on the information coming into the wheelhouse 4 from television receivers 36, aimed by lenses at the illuminated spotlights 35, the vessel 28 adjusts the gripper width of the gripping mechanism 14 3I and with the help of the hydraulic cylinders 30 rotate the forks 29 on the axles 34, capturing the vessel 28. These operations are also controlled from the observation submersible device 50. Thereafter, by performing the operations inversely described above for Scans down trousers, the latter lifts up together with Judge 28. Pumping or pumping out air (light gas) by compressor in section 8, provide the necessary lifting force and instantaneous tensile stresses in sections 8. Lifting thus the vessel 28 accepts a repair additional vessel ( not shown} or is mounted on a lodgement 26 of the removable platform 27 (Fig. 1) and repaired or transported. Under conditions when special requirements are imposed on the lifting speed and the necessity of maneuvering the object to be lowered (lifted) ositelno vertical axis vessel technical application of the above circuit is not feasible, since the procedure buildup sections 8 and their disassembly requires a relatively time-consuming. Under these conditions, the use of chains (e.g. tracked) is appropriate. However, chain winches are structurally complex and are characterized by considerable size and weight and contain complex polyspast systems. A chain crane for the conditions in question is generally difficult to implement. The proposed design allows the use of chain flexible connections without the use of large and powerful drums. When working according to the second variant, chains 19 with hooks 22- or other hooks are used. Each chain 19 is lowered to the bottom of the sea by means of a drive of sprocket 20 with the stoppers 16 and 21 disconnected. Hooks 22 can be connected to the bottom of the sea by an underwater drilling unit 38 ((Bg.8, which after lowering is fixed to the bottom by anchors 39. Then chains 19 lift up with the same drive mechanism with an asterisk 20. If it is necessary to lift from the bottom of the sea relative to the heavy 7 of the object, which is at a certain displacement relative to the vertical of the vessel underway, use the force developed by the lifts 12 to 14. In this case, chains 19 are fixed to the end of it (end 7 of each column 14 by means of stoppers 16 and then columns 14 synchronously lift up lifts 12 together with chains 19 fixed on them. Unloaded by the weight of the object being lifted, chain 19 between the asterisk 20 and the stopper 16 is lifted by rotating the sprocket 20. After selecting a free stroke | (FIG. 2, columns 14, the chain. 19 with the load lifted is fixed with a stopper 21, the stopper 16 is turned off, and the column 14 is lowered by the amount ti. The stopper 16 fixes the chain 19, and the stopper 21 is disconnected from it. Further, the lifting procedure is performed in the same sequence. When working on the third and fourth variants, the supports 41 lift the support 41 by means of the platform 42 by vertical movements of the columns 14. To reduce the pitching, the supports 41 grip 44 are fixed by stretching 45 (Fig. 1c. The support 41 is provided at the bottom to the pontoons 47 to ensure its buoyancy, by cranes 24, the support 41 is partially or completely detached from the platform 42 and gives it an inclined position (Fig. 1. In this case, being behind the wave and wind, it is safely delivered by the technical vessel to the specified places on a technical vessel and its transportation is shown in Fig. 12. Formula of the invention A load-carrying vessel of catamaran type, comprising hulls with a power plant and lifting device lowered and a root system, characterized in that, in order to increase stability and operational capabilities, the lift -7 bypass device contains four columns installed in pairs from the inner sides of the vessel with the possibility of movement in a vertical plane and equipped with lunettes, four support rods with trunnions located in their upper part, and eight brackets, while in the upper part of each column one of the supports is mounted for movement along the column, four brackets are fixed one on each of the supports, and four other brackets are fixed in pairs the sides of the inner sides of the ship hulls, each carrier rod is connected by means of a pin to the bracket of one of the lunettes and is associated with its lower part with one of the brackets fixed on board the hull of the ship. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 389986, cl. B 63 B 35/44, 1971 (prototype). Phage 2 2 gz (fui.j 20 P . Fy - 50 7 DG Ft.Z d f3 6 "PusJO 11