SU1528861A1 - Floating load-hoisting platform - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering. The purpose of the invention is to increase the reliability of operation by preventing overloading of the support columns. Guides 2 are mounted on pontoon 1 with racks 3. Support legs 4 are fixed at the lower ends of racks 3. The platform is equipped with a cable block extension system, the flexible body 5 of which is fixed at the ends of the pontoon 1 and stored alternately along the upper sections of each rack 3 to the leading driver and then alternately along the lower portions of each pillar 3. The extension of the pillars 3 is carried out by turning on the drum, which rewinds the flexible member 5 from the upper portions of the pillars 3 to the lower ones. The presence of a single flexible body 5 equalizes the forces in the uprights 3, thereby eliminating their overload. At the end of the extension, the pillars 3 are fixed by a ratchet mechanism. 4 hp f-ly, 5 ill.

Description

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The invention relates to hydraulic construction and can be used in drilling exploration wells on the shelf of seas and oceans, as well as in the construction and installation works at sea.

The purpose of the invention is to increase the reliability of the platform by preventing the overload of its individual racks.

FIG. 1 shows the proposed platform, a general view; in fig. 2 - plan; in fig. 3 - kinematic layout of racks; in fig. 4 - ratchet locking mechanism; in fig. 5 - the performance of the proposed platform with: movement elements on an air cushion,

The floating load-carrying platform contains a pontoon 1 with guides 2 mounted on it. In which the supports 3 are mounted with the possibility of axial movement of the rack 3. At the ends of the supports 3 are articulated support shoes 4.

The platform is equipped with a rack extension cable system comprising flexible body 5, guide rollers 6 and 7, located respectively on the upper and lower ends of the posts 3, as well as outgoing rollers 8. located on the guides 2. Extension system The racks are equipped with a driven traverser 9. The flexible member 5 is fixed at one end in the assembly 10 and is alternately stored along the upper portions of each rack 3 through their guide rollers 6 and the diverting rollers 8, and then covering the drum 9 through the diverting rollers 8 and guiding roles Pic 7 is along the lower portions of each pillar 3 to the attachment 11 of its second end. For fixing the extreme positions of the pillars 3 when extending, they are provided with limiters 12.

In order to relieve the extension drive of the racks 3 from overloading after installing the pontoon 1 at a predetermined level, the racks are equipped with a ratchet mechanism fixing their position, which contains the paws 13, kinematically connected through a system of hinged links to the piston 14 of the hydraulic cylinder 15, the piston 14 is compressed in the closing direction of the ratchet spring sixteen.

To put the platform into a submerged position, the pontoon 1 is ocHanj.eH with ballast tanks 17 with Kingston flooded 18 and purge valves 19. The remote control 20 Kingston controls 18 and purge valves 19 is placed on a special buoy.

To translate the pillars 3 into the marching position, the guides 2 are fixed to the pontoon I with the possibility of turning on the axles 21 The turning mechanism includes shafts 22 and hinged links 23, as well as a hydraulic | 1 cylinder 24 coupled with a lever axis 21 of one of the two directions. 2. To fix the directions

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They are provided with sleeves 25, with hydraulic cylinders 26 in the traveling or working position of scientific research institutes. In the stowed position, the posts 3 are protected by a fence 27.

For convenience of working in the coastal zone, the platform is equipped with devices for re-M (swings on an air bed, including fans 28 supplying compressed air through the platforms under the bottom of the pontoon 1, as well as a flexible curtain 29 fixed along its perimeter. On the pontoon I, also mounted propulsion fan installation 31., behind which the steering plane 31 is rotatable on the vertical axis.

The floating loading platform operates as follows.

Upon arrival at the point of production, guides 2 with posts 3 are transferred from the traveling to the working position. For this purpose, the hydraulic cylinder 26 produces the spacing of the guides 2, after which they turn the hydraulic cylinder 24 to receive the uprights 3 of the vertical position. In this position, the guides 2 are again fixed by means of a latching mechanism.

The ratchet mechanism is opened to lower racks. For this purpose, the supply of the working fluid to the hydro, pindra 15 is turned on. The spring 16 is pressed in; 1 through the articulated link system on the pawl 13. 13. The latter releases the pillar 2, after which it turns out to be the extension to the extension.

The extension of the pillars is ensured by the inclusion of the traversing drum 9, which, rotating (clockwise in Fig. 3), rewinds the flexible organ 5. At the same time, the length of the branch of the flexible organ encompassing the upper sections of the uprights 3 is reduced, and their lower portions increase, as a result, as the racks are lowered.

When the supporting batch.makom reaches one of the posts of the ground, its lowering will stop. After that, the flexible member 5 is rewound through its guide roller 7 without changing the length of its section, which covers the lower part of this stand. A further increase in the length of the lower branch of the flexible organ 5, which occurs as a result of its washing off the drum 9, leads to an accelerated lowering of the posts that have not yet reached the ground. After the rune has reached all of the uprights 3, further rewinding of the flexible organ 5 by the drum 9 and the reduction of its upper branch, the envelope of the rollers 6, will stretch the latter, and then raise the pontoon 1, while maintaining its horizontal position. through the flexible body 5 and the rollers 6 on the rack 3, and from them through the shoes 4 to the ground. Since, at this point, the sections of the load-carrying upper branch of the flexible organ 5 between the uprights 3 can flow through the rollers 6, 8, the forces in them will be the same. As a result, all racks 3 will have the same load.

After the pontoon I reaches the required level above the surface of the water, the drive of the trailing drum 9 is switched off, and the relative position of the pontoon 1 and the pillars 3 is fixed by the ratchet mechanism by turning off the hydraulic actuator of its opening.

In case of need 1. During the submerged position of the platform, the pontoon 1 is immersed by filling the ballast tanks 17 with water. When controlling the Kingston 18 and the purge valves 19, it is operated from the remote control 20 located on the buoy. The drive of the traction drum 9 and the ratchet fixing mechanism of the struts is controlled by the same driver, which allows the pontoon I to be supported on the supports 3 in a submerged position after ballasting.

Claims (5)

1. A floating load-carrying platform containing a pontoon and racks installed with the possibility of axial movement in guides fixed either to the pontoon, as well as a cable-blocking system of the Bizheni racks, whose flexible organ is connected to the driving drum and stock 0 five van along racks through rollers mounted on their ends, characterized in that, in order to increase reliability by preventing overloading of individual racks, support shoes are hinged at their lower ends, the cable-block system is equipped with discharge rollers, while the flexible member is fixed by ends on the pontoon and stocking with the help of diverting rollers alternately through the upper ends of all the uprights to the drum, and from it alternately through the lower ends of all the uprights - to the attachment point on the pontoon. 2. The platform according to claim 1, characterized in that it is provided with a ratchet mechanism for fixing the racks, as well as a hydraulic drive for switching it off. 3. The platform according to claim 1, characterized in that the guide posts are rotatable in the vertical plane, the platform is equipped with a drive for turning the tracks along with the posts, and the discharge rollers of the cable block system are installed. rotation plane symmetrically. 4. The platform according to claim 1, characterized in that the pontoon contains a bootable system with a remote control panel located on a special buoy. 5. Platform no. 1, characterized in that it contains elements of holding and moving on the air cushion. Yug 2 ZJ Z6.2S kAA / V  // X .g. Alha five