SU1181936A1 - Arrangement for laying and raising underwater cable - Google Patents

Abstract

A device for laying and lifting a submarine cable containing a cable drum mounted on the deck of a floating craft, a movable guide mechanism with a drive for moving the cable along it and a supporting-limiting mechanism. / fPf / is characterized in that, in order to increase reliability, it is equipped with a tension assembly mounted on the deck between the cable drum and the support limiting mechanism, including caged and spring-loaded rollers for winding between the front cables, the axes of rotation having inertial blockers rotation, clips are installed with the possibility of movement in the transverse plane of the vessel and rotation around the vertical axis, the support-limiting mechanism is made in the form of a closed frame, formed It is two verso tical and two horizontal with rolls. eo so 00 od

Description

This invention relates to shipbuilding, in particular to devices for laying and lifting a submarine cable.

The aim of the invention is to improve the reliability of the device.

FIG. 1 shows the device, a general view; in fig. 2 - the same, top view; in fig. 3. —the traveling guide mechanism; FIG. 4 view A in FIG. 3; in fig. 5 - major mechanism; in FIG. 6, section BB, in FIG. five; in fig. 7 tensioning mechanism; in fig. 8 - the same, top view; in fig. 9 - inertia rotation lock.

The device contains a guide pulley 1 mounted on the horizontal axis 2 of the movable foundation 3 with an individual drive 4 and a limit switch 5, a support-limiting mechanism 6 in the form of a frame formed by two vertical 7 and two horizontal rouses 8, the upper horizontal rolls being folding and provided pin bolt 9; tension unit 10, made in the form of two rollers 11 and 12, equipped with springs 13 and connected with axes of rotation 14 through inertial interlocks of rotation 15. The holder 16 of rollers 11 and 12 moves along the main 17 and additional 18 guides. On the floating tool 19 is installed drum 20 with the wound cable 21.

The inertia lock is a movable roller 12 associated with a fixed lock 15 mounted on an axle 14. The lock 15 is designed as a figured sprocket with a set of spring-loaded rollers 22 and springs 23.

The principle of operation of the inertial blocker is based on the jamming of the rollers 22 between the fixed blocker 15 and the roller 12.

Jamming is ensured when the free rotation condition of / 3 is violated (PC Pti, where / 3 is the wedging angle; Pc Friction friction ANGLE; p) is the rolling friction angle.

The design of the interlock 15, which provides a constant angle / 3 between the interlock 15 and the roller 12, allows the selection of the compression force of the spring 23 Fpp depending on the wedging angle / 3 Fnp-f O) to reduce

jamming conditions only from change of / 3, i.e. from a change in the circumferential speed of rotation of roller 12 relative to interlock 15, which excludes the possibility of cable jerks.

The device works as follows.

Before starting the cable-laying operation, the cable pulley must occupy the working position (shown in Fig. 1 by a dashed line), in which it goes beyond the small size of the floating means, thereby preventing the cable from sharp bending when it is

meeting the water and eliminating cable friction on the protruding parts of the craft. The movement of the pulley is carried out on the movable foundation 3, when the working position is reached

Which drive 4 is automatically shut off by the track identifier 5. The horizontal position of the cable when it leaves the reel 20 is provided with a support-limiting mechanism 6, which limits the movement of the cable 21 in the vertical and horizontal planes and, perceiving the force from the horizontal movements of the cable, prevents

his bend. The presence of the folding roller 8 ensures the passage of all types of laid or lifted cables together with amplifiers and couplings without removing the cable from the process line. The cable tension and protection of the cable drum drive mechanism against dynamic overloads during cable jerking are carried out by two horizontally arranged spring-loaded rollers 11, 12.

The springs 13 in combination with the movable rollers 11, 12 provide a constant force of the rollers against the cable, regardless of the cable being laid or lifted and the presence of coupling sleeves or amplifiers on the cable route .1

The inertia blockers 15, mounted on the axis of rotation of the rollers, are triggered when sudden accelerations of cable movement occur. The tensioning mechanism assembly is also capable of

to keep the cable under static load during the splicing process by its couplings, installation of amplifiers, as well as in the case. The cable drive of the drive is in the process of v.rav.ara.a.i or ne :: g:; ak to:; ate. .ee., installation of the tension knot eliminates bagar 181936 the possibility of its moving in the chapel :::::::: the vertical axis along the direction of 1, 5, under the action of cable tension

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Claims (1)

GASKET DEVICE AND LIFTING OF THE UNDERWATER CABLE, comprising a cable drum mounted on a deck of a floating means, a movable guide mechanism with a cable moving drive along it, and a support and limiting mechanism, characterized in that, in order to increase reliability, it is provided with a cable installed on the deck between the cable drum and the support and limiting mechanism a tension unit, including rollers located in the cages and spring-loaded relative to them, for winding a cable between them, the axis of rotation of which have inertial blockers Clamps, clips are installed with the ability to move in the transverse plane of the vessel and rotate around a vertical axis, the supporting-limiting mechanism is made in the form of a closed frame formed by two vertical and two horizontal rollers.