RU2339536C1 - Pulling-and-running device for towed line - Google Patents

Abstract

FIELD: transportation, shipbuilding.

SUBSTANCE: pulling-and-running device for towed line contains turning slipway with depressor of towed line installed on it in cruising order and hauling winch with horizontally mounted drum for multi-circuit single-row winding of towing line. Before the drum of hauling winch the rotating support made in the form of bobbin with lower bearing rib and the stand on which rotating drum is installed are mounted and spaced apart in the sector of 50-60° relative to axis of drum rotation. This drum has a channel for laying the tension strip embracing towed line with possibility to move in the channel of hauling winch drum while towed line coils are stripped/winded on, and a channel for laying the cable linked via pulley tackle with variable load traveling inside the stand. On the platform of turning slipway limiters are installed which are made as supports. Clearance between supports is widening in direction of towed line exit from slipway forming arc-shaped leaves.

EFFECT: tow line damage prevention during its positioning/hauling.

5 dwg

Description

The invention relates to shipbuilding, in particular to hoisting devices for staging and hauling towed lines.

It is known to use underwater towed systems equipped with measuring equipment for examining various horizons in the water column. Depending on the design of the research equipment carrier, various tripping devices are also used.

So, for example, a ship device [1] for towing underwater vehicles contains a support pulley mounted rotatably in the aft end of the vessel, on the clip of which a guide assembly is located, located behind the pulley, and a towing winch with an etching-selecting mechanism for the load-carrying cable passed through the support pulley and guide assembly.

In a towed system [2], which uses, along with the underwater vehicle, measuring devices distributed along the length of the towing line towed reinforced with fairings, the hoisting device comprises a swing frame with a grip for the underwater vehicle, a towing winch with a cable-laying device and a guide tray, the ends of which are pivotally connected to guide roller yoke and winch cable paver. Due to the fact that the guide roller is installed with the possibility of self-installation in the direction of descent of the towed line, which changes due to the maneuvering of the vessel, and also due to the fact that the guide tray moves along the winch drum as the cable turns are winded / winded, the fairing ribbon is twisted and their breakdown and, thus, increases the operational reliability of the lifting device.

The disadvantage of this device is the dependence of the design of the hoisting device on the length of the transition cable (without fairings), with an increase in which the height of the swing frame should also be increased, since otherwise, the descent and raising of the underwater vehicle is not possible.

Also known is the design of an underwater tugboat (towed line) [3] used for research in the near-surface water layer. This system contains a recess and a load-carrying cable, reinforced with fairings, interconnected by means of communication nodes. The towing line hoisting device includes a towing winch, aft roller and a movable gripping device, in the paws of which the towed line extender is clamped. To fix the tape of the fairings of the towed line, a movable and fixed rollers are installed on the gripper, which provide a recess to the legs of the gripper when hauling the towed line.

The disadvantage of this device is the deterioration of the operating characteristics of the lifting device with an increase in the length of the towed line.

This is due to the fact that in order to maintain the integrity of the towed line, which is a tape of fairings 10-15 cm wide, reinforcing the load-carrying cable, with measuring sensor units built into the line at regular intervals, layered single-row laying of turns of the towed line on the towing winch drum is required. When using a towed line of large length (200-300 m), the diameter of the winch drum increases significantly (more than 2 m in diameter). In the vertical setting of the drum, as in the above analogues, it becomes unstable, due to the large weight of the line sags, it twists, bites the fairings when laying on the drum and breaks them.

Known hoisting devices towed lines using towing winches with horizontally mounted drums [4, 5].

In the hoisting device [4], a hydraulic winch is used for staging and hauling the towed line, providing a pulling force of 3-3.5 t · s and an etching speed of 5-15 m / min, as well as a stationary inclined slip installed between the platform on the upper deck of the vessel to accommodate the tow line deepener and lower deck. At the base of the slip, the hatch of the inclined shaft-clus is made, through which the recess falls out overboard. In order to conduct the tape of the fairings of the towed line to the inclined slip between the towing winch and the location of the recess, two vertical guide bearings in the form of rolls with flanges are installed.

This hoisting device has limited use due to the fact that it occupies a large area and requires special retrofitting of the vessel.

The towing line launching device [4, FIG. 2], adopted as the prototype of the present invention, is located in a room located in the central part of the catamaran type vessel and occupies a much smaller area due to the use of a rotary slip on which the tow line extension is mounted.

The disadvantage of the prototype is the lack of tools that protect the towed line from twisting and biting fairings, which reduces the operational reliability of the hoisting device.

The problem to be solved is the prevention of damage to the towed line in the process of setting it up and selecting, with the possibility of using the towed line on ships of various designs and displacement without special additional equipment for the vessel.

The essence of the invention lies in the fact that a towing line containing a rotary slip with a towing line extender mounted on it and a towing winch with a horizontally mounted drum for multilayer single-row winding of the towed line is inserted into the towing line towing device and spaced into sector 50-60 ° relative to the axis of rotation of the rotating support, made in the form of a roll with a lower flange, and a stand on which a rotating drum having a brook for laying a stretch tape covering the towed line with the possibility of moving the towing winch in the drum stream as the lines are drained / winding, and a brook for laying the cable connected through a system of blocks with adjustable load moving inside the rack, while on the platform of the rotary slip limiters are installed, made in the form of supports, the gap between which widens towards the descent from the slip of the towed line, forming arched flaps.

In addition, a lifting device with a towed line is placed in a container in which there is also an instrument compartment for accommodating equipment for collecting and processing measurement information.

The invention is illustrated by drawings, on which:

figure 1 - tripping device towed lines, General view;

figure 2 is a towed line;

figure 3, 4 - layout of the hoisting device, side and top views;

5 is a rack device fixation.

As shown in figure 1 of the General view of the lifting device of the towed line, it includes a towing winch with a horizontally mounted drum 1, as well as a rotary slip with a vertically mounted walking platform 2, which cover the intermediate section 3 of the recess and the grille 4 of the recess, pivotally connected by brackets 5. In addition, in front of the drum 1 of the winch there are mounted, in the angular sector α = 50-60 ° relative to the axis of rotation of the drum 1, a rotating support 6, made in the form of a roll with a lower flange, otorrhea mounted on a fixed base 7, 8 and the front fixing devices towed line on the winch drum (hereinafter - the fixing device).

The lattice 4 of the recesser is a frame with jumpers of an arcuate cross-section, performing the function of a burrowing wing. The buoyancy section is pivotally connected to the lattice 4 with a wing-shaped float 9 made of high-strength foam.

A leash 10 is pivotally fixed at the bottom of the intermediate section 3 of the recess, on the fork of which, equipped with a connector 11 for the towing line of the towed line, a large measuring device 12 is installed.

In the tubular frames of the lateral sides of the platform 2 of the slip, levers 13 are installed, which are deployed around a horizontal axis installed in the sides of the crossbar 14.

The towed line 15 (see Fig. 2) contains a load-carrying cable 16 reinforced with plastic (caprolon) fairings 17 installed with gaps to ensure the flexibility of the towed line 15 in both longitudinal and transverse planes.

For the convenience of assembling the towed line 15 and, if necessary, replacing the damaged fairings 17, each of them is made of two pivotally connected parts with fixing elements forming the latches. Symmetrical recesses are made on the inside of both parts of the fairing, forming cavities for laying the load-carrying cable 16, electrical cables 18 connecting the measuring sensors and devices installed on the towed line 15 with the equipment installed on the vessel and the water intake hose 19.

In order to avoid damage to the cables 18 and the hose 19, which are stretched under the influence of their own weight when setting and towing the line 15, bushings 20 with clamped cowls 21 are mounted (pressed) on the load-carrying cable 16, which are rigidly fastened with screws. Clamping fairings 21 are installed at intervals of 1 m.

Blocks of measuring sensors (not shown in FIG. 2) are installed at certain intervals along the length of line 15 in accordance with the specified trawl horizons in the water column. Cases of blocks in width and thickness correspond to the dimensions of the fairings and do not introduce significant distortions in the hydrodynamic characteristics of the towed line 15.

To ensure the possibility of using the towed line 15 on ships of various designs and displacement without special retrofitting of the vessel, to reduce the occupied space of the deck space and to reduce the time for setting up and hauling the towed line 15, all its equipment is placed in the container 22 (see Figs. 3, 4), in which, in addition to the compartment for placing the hoisting device, there is an instrument compartment 23 for accommodating equipment for collecting and processing measurement information.

In the lower part of the slipway platform 2, on the side of the placement of the intermediate section 3 of the recess, limiters 24 are installed, into the gap between which the tape of the fairings 17 of the towed line 15 is refueled. its descent from the slip, forming arched flaps with an extension of the gap from 5 cm to 50 cm.

Near the platform 2 slip installed electric drive 25 slip, providing a rotation of the levers 13 around a horizontal axis.

The plug of the leash 10 with the connector 11 for securing the pulling end of the cable 16 of the towed line 15 is connected to the rotating support 6 (roll). The roll rib is located at the level of the lower flange (cheek) of the drum 1 of the towing winch, driven into rotation by the electric drive 26.

The device for fixing the towed line 15 contains a rack 8 in the form of a pipe, on which a rotating drum 27 of caprolon is worn, fixed with adjusting rings 28, 29, which are rigidly fixed to the rack 8.

The drum 27 has a baffle 30, between which and the upper flange 31 of the drum there is a narrow stream for laying the cable 32. The cable 32 through the block (pulley) 33, the clip of which is fixed on the upper mounting ring 29, and blocks 34, 35, the clips of which are fixed on the bar 36 at the top of the strut 8, brought into the pipe, where it covers the block 37 with an adjustable load mounted on its clip. The root end (loop) 38 of the cable 32 is fixed to the bar 36.

The adjustable load is made in the form of a set of disks 39, worn on the rod 40, mounted on the lower support disk 41 of the cargo. For ease of installation, stacked disks 39 have side undercuts 42. At the top of the rack there is a hatch 43 for installing disks 39 of an adjustable load. Locking screws 44 are installed under the hatch 43, by means of which the load is held at the top of the rack 8.

To facilitate the sliding of the load inside the rack 8 installed guides 45 of caprolon.

In the wide stream of the drum 27, located between the baffle 30 and the lower flange 46 of the drum, the pulling end of the metal tension tape 47 is fixed, which covers the tape of the towed line 15, moving with it in the creek of the drum 1 of the towing winch as the tow lines 15 are etched / wound The second (root) end of the tension tape 47 is mounted on a bracket rigidly connected to the fixed base 7 of the rotating support.

To use the towed line 15, the container 22 with its equipment is installed at the stern of the vessel.

In the initial state, the towed line 15 with the blocks of the measuring sensors is laid on the drum 1 of the towing winch and fixed with a tension tape 47 of the fixing device. In this case, the tape 47 is completely etched from the rotating drum 27, and the cable 32, which holds the load at the top of the rack, is laid in the upper stream of the drum 27. The position of the load is fixed by the locking screws 44.

Before setting the towed line 15, check whether the crimping force of the tension tape 47 is sufficient. To do this, release the locking screws 44 and, if necessary, add or remove the required number of discs 39.

To set the towed line 15 open the doors in the rear wall of the container 22. Turn on the electric drive 25 slip, turning the levers 13 down, as shown in Fig.3. Slip platform 2 is set to an inclined position and, when turned, carries along the tow line extender. In this case, the pivotally connected parts 3, 4 of the recess open, the grill 4 tilts overboard and carries with it first the intermediate section 3, and then the leash 10 with the load-carrying cable 16 of the towed line fixed to its fork.

At the same time, including at low speeds the electric drive 26 of the towing winch, they begin to etch the towed line 15, bring it to the limiters 24 and tuck into the gap between them.

After immersion in the water of the deepener, the towing winch is put into operation, in which it operates until the tow line 15 is allowed to be etched from the drum 1.

In this case, the freed from the locking screws, pulls the cable, which starts to rotate the drum 27, and the tension tape 47 begins to wrap around it as the turns of towed line 15 off the drum 1 of the towed winch, compressing the fairing belt with constant effort and moving with it in the creek of the drum 1. The lower edge of the fairing tape is rolled along the flange of the rotating support 6 and so, with the vertical position of the fairings, the towed line is drawn through the stops 24. Passing the stops, the turn limiters tape Appears, lies flat on the slipway pad and slides off into the water under the influence of the weight of the recess and its own weight. Thus, in the process of setting the towed line 15, it is prevented from sliding off the drum 1, twisting and breaking of the fairings.

At the end of the towing line, the towing winch is turned off.

While the vessel is conducting a survey of the deeper layers of the body of water. The readings of measuring sensors and devices are transmitted via cables 18 to the equipment installed in the instrument compartment 23 of the container, where they are recorded and processed.

When the ship maneuvers, the towed line is held in the gap between the stoppers 24, which, thanks to the arched shape of their wings, protect the fairings from breaking.

At the end of the measurements, a towing winch is included for hauling a towed line 15. The fairing ribbon, passing through the stops 24, is mounted vertically and supported by the flange of the rotating support 6, is guided into the creek of the drum 1 and wound on it layer by layer, row by row, crimped by the tension tape 47. The constant crimping force is ensured by the tension of the cable 32, which, when the tension is ejected, the tape 47 starts to be wound on the drum 27, lifting the load up the rack 8. This prevents bite fairings and damage to the towed line.

When a leash 10 emerges from the water, the towing winch is switched to low revs. Then, after approaching the slip of the intermediate section 3 of the deepener, the slip drive 25 is turned on, turning the levers 13 upward and setting the platform 2 in the initial vertical position. The position of the deepener on the slip is fixed by installing the brackets 5 on the upper edge of the platform 2.

Thus, the introduction of a rotating support, a device for fixing the towed line 15 and stops allows you to improve the operational characteristics of the lifting device, to prevent damage to the towed line 15 during its immersion in water and hauling on board the vessel.

Industrial applicability of the invention is determined by the fact that the proposed design can be made according to the description and drawings from conventional materials used in instrumentation, and used as a lifting device for the towed line 15.

Bibliography

1. USSR, copyright certificate No. 948756 for invention, IPC B63B 21/66, publication 07.08.1982

2. USSR, copyright certificate No. 1062113 for invention, IPC B63B 21/66, publication December 23, 1983

3. RF patent No. 2035348 for an invention, IPC B63B 21/66, publication 05/20/1995

4. RF, certificate No. 2797 for a utility model, IPC B63B 35/00, publication September 16, 1996.

5. RF, certificate No. 7392 for a utility model, IPC B63B 35/00, publication of August 16, 1998, prototype.

Claims (1)

A towing line launching device comprising a swivel slip with a towing line extender mounted on it and a towing winch with a horizontally mounted drum for multilayer single-row winding of the towing line, characterized in that the towing winch installed in front of the drum and spaced in sector 50- 60 ° relative to the axis of its rotation, a rotating support made in the form of a roll with a lower flange, and a stand on which a rotating drum is installed, having a stream for laying on a heavy tape covering the towed line with the possibility of moving the towing winch in the drum stream as the tow line is pushed / winding, and a cable laying cable connected through a block system with an adjustable load moving inside the rack, with limiters installed on the rotary slip pad, made in the form of supports, the gap between which widens towards the descent from the slip of the towed line, forming arched flaps.

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