SU1147311A1 - Arrangement for lowering,lifting and stowing trawl - Google Patents

Abstract

1. A DEVICE FOR DOWNLOADING, LIFTING AND LAYING THE TRAL on vessels, mainly equipped with working platforms located on the sides, containing a net drum divided into sections, a horizontal roll with outer lateral ribs, a roller guide in front of the drum and a carriage equipped with a drive for returning translational motion along a guide n kinematically associated with a roller, characterized in that, in order to prevent loss of fishing time by ensuring the reliability of directional signals the trawl on the drum, the guide for the roll is located horizontally and parallel to the net drum, the latter is divided into two sections, the horizontal roll is replaced in the carriage body so that its axis is lower than the axis of the guide, and the roll itself is divided by additional internal flanges into sections of which are made in the form of streams, and central - in the form of a gutter. I 2. The apparatus according to claim 1, characterized in that the carriage is connected with a chain drive. 4: from 5

Description

The invention relates to industrial fisheries and can be used ano. for lowering, lifting and stowing net gear, such as trawls.

A device for lowering, lifting and laying a trawl is known, comprising a net drum, a horizontal roll with a drive of vertical movement and installed in the guide carriages 1.

However, this device is unreliable in operation due to the large forces acting on the drive supports of the horizontal roll, moreover, it does not provide a reliable layout of the net part of the trawl on the drum.

Closest to the invention is a device for lowering, lifting and laying a trawl, comprising a net drum divided into sections, a horizontal roll with outer side flanges and mounted on guide carriages. The guides are made with vertical slits for accommodating the carriages. The roll axes are mounted in guides and are hinged to the carriages. The horizontal roll is provided with a vertical movement drive. In addition, one of the ends of the roll axis is made with a groove for accommodating the output member of the actuator 2.

However, such a device does not provide a constant adjustment of the angle of inclination of the roll axis depending on the tension of the netting cloth (trawl harness), therefore, the reliability of laying the netting of the netting on the drum surface when lifting the netting in this device is not ensured, this may cause an accident and loss of fishing time. The device is not reliable in operation due to the complexity and the presence of a large number of drives that ensure the operation of the structure.

The aim of the invention is to prevent loss of fishing time by ensuring the reliability of directional laying of the trawl on the drum.

The goal is achieved by the fact that in a device for lowering, lifting and laying a trawl, comprising a horizontal roll divided into sections, a horizontal roll with external lateral flanges, a roll guide in front of the drum and a carriage equipped with a drive for reciprocating along the guide and kinematically connected to the roll, the roll guide is located horizontally and parallel to the net drum, the latter is divided into two sections, the horizontal roll is placed in the carriage body so that about an axis located below the axis of the guide, and the roll is divided by additional internal flanges into sections, the end of which are in the form of streams and the central - a videzheloba.

The carriage is associated with a chain drive.

FIG. 1 shows schematically the device, the plan; in fig. 2 - the same, located on the deck of the vessel, used in the scheme "double / two trawls / with two net drums; in fig. 3 - the same, side view; in fig. 4 — node 1 in FIG. 3; in fig. 5 is a view A of FIG. 3

The device for lowering, lifting and laying the trawl contains a net drum 1 with external flanges 2. The drum 1 is mounted on axis 3, which is at one end mounted in bearing 4 on support 5, and the second is connected to drive 6. The drum 1 is driven by an electric motor through gear 7. Drum

I is divided into two equal sections by an internal flange 8. The sections are intended for

winding of exhaust cables, the ends of which are permanently fixed on the flanges 2 of the drum 1 (not shown), cables 9 and wings 10 of the trawl 11,

0 When the device is intended for use in the “double take” on large-tonnage fishing vessels equipped with working platforms located on the sides, it contains two net drums 1 located along

5 sides of the ship.

In front of the drums 1 horizontally and parallel to them on the foundations 12 a guide 13 is installed in the form of an I-beam. A guide carriage 14 is mounted on the rail 13, which rests on

 shelves 15 I-beams with two pairs of rollers 16 located on both sides of the I-beam axis. For better fixation of the carriage 14 on the guide 13, two rollers 16 are in contact with the upper flanges 15 of the I-beams, as well as located on either side of the I-beam.

In the lower part of the carriage body 14, a horizontal roll 17 is installed, which is mounted for free rotation in the support bushings (not shown) mounted in the carriage body 14. The axis of symmetry of roller 17 is located below the axis of symmetry of the guide 13 and slightly below the axis 3 of the drum one.

Rol 17 has outer lateral 18 and additional inner 19 flanges and is thus divided into three sections. The diameter of the outer flanges 18 is increased relative to its inner flanges 19. This is necessary to prevent the cable and net parts 11 of the trawl 11 from slipping off from the roll 17 (due to the drift of the trawl in the vessel’s slip, due to sea waves, etc.) and the threads of the net part of the trawl II between the body of the carriage 14 and the flanges 18 of the roll 17.

The separation of roll 17 into sections also contributes to the direction of laying the trawl.

I1 on the drum 1.

The central section of the roll 17 is made in the form of a rectangular gutter. She pre

assigned to a formal harness from the net part of the trawl. Extreme sections of roll are equal to each other and are made in the form of triangular-shaped streams.

The location of the roll 17 below the guide 13 and its installation in the carriage 14 body create a closed loop defined by the lower shelf 15 of the guide 13, the carriage 14 shell and the roller 17 with side flanges 18. Through this loop the trawl 11 is directed to the drum 1. The presence of a closed the contour eliminates, even when rolling, the possibility of the descent of the trawl 11 from the roll 17, and the presence of a profiled roll 17 at the contour from the bottom ensures that the trawl 11 is directed onto the drum 1.

The carriage 14 is driven by an electric motor 20 through a gearbox 21. The gearbox shaft 21 is connected by a chain drive 22 with an asterisk 23 rotatably fixed on the guide 13. The asterisk 23 is aligned with the asterisk 24. The asterisk 24 is connected by a chain 25 with an asterisk 26 mounted on the guide 13.

A tension device (not shown) is provided for tensioning the chain 25. To the chain 25 is attached to the carriage 14.

The device works as follows.

Since the proposed device is used in the fishing scheme “double, which provides alternating operation with two trains, the operation of the device should be considered from the moment of lifting one of the trawls.

The lifting of the trawl begins with a sample of warps, which is carried out using warp winches installed in the stern of the vessel (not shown).

The carriage 14 is driven by the electric motor 20 through the gearbox 21, the chain drive 22, the chain 25 and the stars 23, 24 and 26. The engine is turned on from the bridge of the vessel.

The carriage 14 moves along the guide 13 in the direction of the drum 1 on which the trawl I. will be laid. The movement is carried out until the carriage 14 is installed opposite the drum 1 in such a way that the streams of roll 17 are at equal distance from the flange 8 of the drum 1, i.e., the middle of the roll 17 will be installed opposite the center of the drum 1. Then the exhaust cables (not shown) inside the carriage 14 are passed along the roll of the roll 1.7.

After the wire has been sampled, the cables 9 of the trawl 11 are disconnected from the trawl boards and connected to suction cables.

The motor 6 is turned on, the drum 1 is rotated, and the haul cables are pulled, and then the cables 9 of the trawl 11, which pass through the outer sections of the roll 17. The cables 9 are fed to the drum 1 from the bottom of the drum (winding from the bottom is necessary to ensure tight

the trawl cables fit, and then its net part to the surface of the roll 17). Drum sections 1 are filled with cables 9.

The cables 9 are connected to the wings of the trawl 10, 5 which, after winding the cables 9, will be guided into the drum section 1 through the streams of the outer sections of the roll 17. The inner flange 8 of the drum 1 prevents the right and left cables 9 of the trawl from tangling 11

Q when they are wound on a drum 1.

After sampling the cables 9 and the wings 10 of the trawl 11, winding onto the drum 1 of the upper and lower picking 27 of the trawl 11 begins, i.e., the winding of the net part of the trawl I.

5 When passing through the roller 17, the net part of the trawl 11 is formed by the central section of the roller 17, made in the form of a groove, into a tow. At the same time, the tow of the trawl 11 passes through a closed loop formed by the bottom shelf 15 of the guide 13, the body

0 carriages 14 and rollers 17 with side flanges 18 through which the tow of the trawl 11 and directed to the drum 1.

The increased diameter of the outer flange .18 roll 17 prevents slipping

5 of the cable and net parts of the trawl 11 from the roll 17 and prevents the threads of the net part of the trawl 11 between the carriage body 14 and the flanges 18 of the roll 17 from entering, contributes to the direction of laying the trawl 11 on the drum 1.

0 The toppers 28 (serve to give the net part of the trawl 11 the necessary strength and are attached to the side seams of the trawl 11 along its entire length so that one end of the topenant is connected to cable 9) passes through the streams of the end sections of the roll 17. Because

5, the toppents 28 are under the action of tension, they, when winding the trawl 11, will direct the movement of the entire net part of the trawl 11 along the drum 1 using the carriage 14. The winding of the net part of the trawl 11 onto the drum 1 is performed over the cables 9 along

 the entire length of the drum 1.

If, when the cables 9, wings 10, or the net part of the trawl 11 are wound around the drum 1, they are uneven in their housing, the inclusion of the electric motor 20, the carriage 14 is driven and moves along the guide 13.

The direction of movement is selected Visually. Depending on which part of the drum 1 has more free space,

0 in the wrong direction and the carriage 14 is directed, changing the direction of cable laying or the trawl cable 11 to the drum I.

The net drum I and the carriage 14 are controlled from the bridge of the vessel (i.e., located in the same place).

5 The net part is wound up before the catch of the trawl bag with the catch approaches. In this case, the rotation of the drum 1 stops.

Next, the trawl bag is sampled with the BOB using the means available on the vessel. After sampling the first trawl, the second, laid on the second net drum 1, starts to descend.

The catch is drained from the first trawl during the second trawl descending.

After pouring the catch out of the first trawl, turning on the engine 6, the first net drum 1 is rotated and the remaining part of the net is wound.

After switching on the engine 20, the carriage 14 is moved to the side of the second net drum 1, from which the second trawl is lowered, until the carriage 14 is installed opposite the drum 1 so that the streams of roll 17 are equal distance from the flange 8 of the drum 1. Here, the exhaust cables (non-shown) of the second trawl inside the carriage 14 are passed along the stream of roll 17.

Thus, the second net drum 1 is prepared for winding the second trawl.

20

FIG. 2

The raising of the second trawl and its winding is carried out in the same way as the first.

The invention ensures the reliability of directional laying of the cable and net parts of the trawl on the net drum, i.e. the basic operation when lifting the trawl and, therefore, eliminates the loss of fishing time. Due to its small size, it can be placed on the fishing deck of a large-tonnage fishing vessel for use of the double. The simplicity of the device allows, without significant costs, to modernize the fishing gear on existing vessels and ensure their more efficient operation. The device is reliable in operation and easy to maintain.

The proposed device can be used on vessels that will work both according to the “double” fishing scheme, and according to the traditional trawling scheme.

The annual economic effect from the use of the proposed device is 27 thousand rubles.

25

16 1

GNM1

Vida

FIG. five

Claims (2)

1. DEVICE FOR LAUNCHING, LIFTING AND LAYING OF THE TRAILER on ships, mainly equipped with on-board working platforms, comprising a net drum divided into sections, a horizontal roll with external side ribs, a roll guide installed in front of the drum and a carriage equipped with a drive for return translational movement along the guide and kinematically connected with the roll, characterized in that, in order to prevent the loss of fishing time by ensuring the reliability of directional laying t rails on the drum, the guide for the roll is horizontally and parallel to the net drum, the latter is divided into two sections, the horizontal roll is replaced in the carriage so that its axis is below the axis of the guide, and the roll itself is divided into sections, the outermost of which are made in the form of streams, and the central - in the form of a gutter. 2. The device according to π. 1, characterized in that the carriage is connected to the drive by a chain drive. <Riga 7