RU2351501C1 - Device of tow line fixation in towing winch spool - Google Patents

Abstract

FIELD: shipbuilding.

SUBSTANCE: invention concerns shipbuilding, particularly lifting devices for tow line setting/loosening. Device for tow line fixation on towing winch spool with vertical rotation axis includes tubular strut carrying rotating spool with cable groove. Cable is connected over block system to adjustable load moving inside strut. Spool feature groove for tension band covering tow line and capable of moving in towing winch spool groove in the process of tow line coil winding/unwinding. The other end of tension band is fixated to immobile basement of rotating support distanced from the strut within 50°- 60° sector against rotation axis of towing winch spool.

EFFECT: prevented disorder of single-row multiplayer winding of tow line in the process of winding and unwinding from towing winch spool.

5 dwg

Description

The invention relates to shipbuilding, in particular to hoisting devices for setting / hauling towed lines.

The widespread use of towed lines equipped with measuring equipment for examining various horizons in the water column. The measuring equipment, depending on the tasks to be solved, is installed either in special underwater vehicles with a recess and buoyancy elements, or distributed along the length of the load-carrying cable. For stable movement in the towing plane, the towing line towing cable is equipped with fairings, as a result of which the towed line is a prefabricated belt with limited flexibility.

Therefore, an important task is to ensure the integrity of the towed line during its setting / selection, for the solution of which hoisting devices of various designs are used.

Thus, for example, a ship’s launching device [1] for an underwater vehicle includes a towing winch with a cable-laying device for a cable-cable and a guide tray, the ends of which are pivotally connected to the clip of the guide roller and the cable-laying machine of the winch. For lowering and raising the underwater vehicle, a swinging frame with a grip is used.

In the ship’s device [2] for towing underwater vehicles to accelerate the cable cable setting / retrieval operation, a guide assembly of two blocks and a roller mounted for rotation on two-arm levers that are mounted on the clip of the support pulley located in the aft end of the vessel is proposed.

When using a towed line of large length (200-300 m), for its single-row layered laying, a drum of more than 2 m in diameter is required, and its vertical setting, as in the analogues considered above, is impractical, because due to the large weight of the line, the task of ensuring the required tension when laying without complicating the line is complicated.

Known hoisting devices towed lines using towing winches with horizontally mounted drums [3, 4].

The device [3] uses a hydraulic winch, providing a pulling force of 3-3.5 ton-force 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 the 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 draw the tow line line to an inclined slip between the towing winch and the location of the recess, two vertical guide supports are installed for tensioning the line when etching from the winch.

This hoisting device has limited use due to the fact that it occupies a large area and requires special retrofitting of the vessel. In addition, the device does not provide protection against biting fairings and their breakage when laying the line on the drum.

In the device [4], the room in which the towing line launching device is located is located in the central part of the vessel and occupies a much smaller area due to the use of a rotary slip. However, this device also does not provide protection against twisting and biting the towed line on the drum of the winch when it is set / selected.

No other analogues of the towing line hoisting devices using towing winches with a vertical axis of rotation of the drum were found.

The problem to be solved is the prevention of violation of a single-row multi-layer winding of the towed line during its laying on and off from the towing winch drum.

The essence of the invention lies in the fact that the device for fixing the towed line on the drum of the towing winch, having a vertical axis of rotation, contains a rack in the form of a pipe, on which a rotating drum with a handle for a cable is installed, which is connected through a system of blocks with an adjustable load moving inside the rack, and a brook for a stretch belt that covers the towed line with the possibility of moving the towing winch in the drum’s stream as the coils of the towed line are laid / etched, and secured with its second nets on the fixed base of the rotating support, spaced from the rack in the sector 50 ° -60 ° relative to the axis of rotation of the drum of the towing winch, while the adjustable load is made in the form of a set of removable disks.

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.

The proposed device is part of the lifting equipment of the towed line, which, as shown in figure 1, contains a towing winch with a drum 1 having a vertical axis of rotation, and a swivel slip with a vertically mounted walking platform 2, on which the intermediate section 3 and the lattice 4 of the tow line deepener pivotally connected by means of brackets 5. In addition, in front of the winch drum 1, a rotating support 6 spaced apart in the angular sector α = 50 ° -60 ° relative to the axis of rotation of the drum 1 is installed, you olnennaya a flanged roll, which is 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 slipway 2, levers 13 are installed that are rotated around a horizontal axis, which is installed in the sidewalls 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, both in the longitudinal and transverse planes.

For the convenience of assembling the towed line 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, electric cables 18 connecting the measuring sensors and devices installed on the towed line 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 on the load-carrying cable 16, bushings 20 with clamped cowls 21 are mounted (pressed in), 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 the line in accordance with the specified trailing horizons of the towed line in the water column. Cases of blocks in width and thickness correspond to the dimensions of the fairings and do not introduce significant distortions into the hydrodynamic characteristics of the towed line.

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

As shown in Fig. 4, in the lower part of the slipway 2, from 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 is tucked. The stops 24 are made in the form of supports rounded from the side of the towed line plant and gradually tapering towards its exit from the slipway, forming arched flaps with a gap extension of 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 is brought to a rotating support 6 (roll). The roll ribs are located at the level of the lower flanges (cheeks) of the drum 1 of the towing winch, driven into rotation by an electric drive 26.

The tow line fixation device (see Fig. 5) contains a stand 8 in the form of a pipe, on which a rotating caprolon drum 27 is mounted, fixed by adjusting rings 28, 29, rigidly fixed to the stand 8.

The drum 27 has a fence 30, forming two streams. In a narrow stream located between the partition 30 and the upper flange 31 of the drum, the pulling end of the cable 32 is fixed. Next, the cable 32 passes through the block (pulley) 33, the clip of which is fixed to the upper mounting ring 29, and through the blocks 34, 35, the clips of which are fixed on the bar 36 at the top of the rack 8, it is inserted inside the pipe, where it covers the block 37 with an adjustable load mounted on its holder. 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 creek 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, as shown in Fig. 4, covers the towed line, moving with it in the creek of the drum 1 of the towing winch as it is etched laying turns of the towed line. 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, 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, check whether the crimping force of the tension belt 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 towed line is completely ejected 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 the towed line 15 off the drum 1 of the towed winch, compressing the fairing belt with constant force and moving in place with it in the creek of the drum 1. The lower edge of the fairing tape slides 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. Having passed the stops, the tape unfolds, lies shmya slip and the platform descends from it into the water by the weight of its own weight and uglubitelya. Thus, in the process of setting and selecting the towed line 15, the overturning of its fairings and jamming on the drum 1 of the winch, twisting and breaking of the fairings are prevented.

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 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 stops 24, which, thanks to the arched shape of their wings, protect the fairings from fractures.

At the end of the measurements, a towing winch is included for hauling a towed line. 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 jamming of the fairings and damage to the towed line.

When the leash 10 emerges from the water, the towing winch is switched to low revolutions and after lifting the leash along the slip, the fairing tape is removed from the stopper gap 24. Then, after the intermediate section 3 of the recess has entered the slip, the slip drive 25 is turned on, which levers 13 up and sets platform 2 to the original 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 the device for fixing the towed line of the proposed design allows to improve the operational characteristics of the lifting device as a whole, preventing violations of the single-row multi-layer winding of the towed line during its laying on and off the towing winch drum, eliminating the possibility of damage to the towed line during its immersion in water and sampling aboard the ship.

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 part of hoisting equipment for a towed line.

Bibliography

1. USSR, copyright certificate No. 1062113 for invention, IPC B63B 21/66, publication 23.12. 1983 year

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

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

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

Claims (1)

A device for fixing a towed line on a towing winch drum having a vertical axis of rotation, comprising a pipe stand on which a rotating drum is mounted with a cable handle, which is connected through a system of blocks to an adjustable load moving inside the rack, and a handle for a tension belt, which covers the towed line with the possibility of moving the towing winch drum in the creek as the towing line is laid / etched, and secured with its second end on a fixed rotating base support, spaced from the rack in the sector 50-60 ° relative to the axis of rotation of the drum of the towing winch, the load adjustment is made in the form of a set of removable disks.

Images