RU72674U1 - HYDRAULIC WINCH - Google Patents

Abstract

The inventive hydraulic winch refers to the means of lifting from under the water of ships, surface ships, submarines and other large objects. The hydraulic winch comprises a power shaft with a cable drum and a hydraulic actuator including hydraulic cylinders through connecting rods connected to the drum shaft, characterized in that it also consists of a split reinforced frame, on the side racks of which a power shaft with two drums mounted on splines is mounted, each of the drums along the rim has gear cutouts with the possibility of contact with the ends of the rods of the winch hydraulic cylinders, and the central part of the power shaft is provided with a support in the form of a mounted splines of the wheel, while the winch frame is made of two parts of the side and two parts of the transverse racks, which, after laying the power shaft on the lower side racks of the winch, are connected together by tightening bolts, while the system assembled on the power shaft is made to rotate by means of hydraulic cylinders fixed on the supporting shafts of the lower and upper parts of the frame on both sides of the winch, through a fitting providing hydraulic oil simultaneously to two hydraulic cylinders on one and the other side of the winch, the volume of the nozzle is made with the entrance and exit of hydraulic oils, side plugs, sealing cuffs, a rotating core with transverse transfer channels made at an angle in the upper and lower parts of the core, transverse pipes, a transfer pipe with a rotary handle of the nozzle core, while the hydraulic cylinders of the rotary handle of the nozzle core installed one on either side of the winch, with the possibility of interaction with other winch hydraulic cylinders to switch the direction of flow of hydraulic oil, while days, the nozzle outputs are connected by hoses to the winch hydraulic cylinder inlets, and the other nozzle outputs are connected to the winch hydraulic cylinder outputs, to which the hydraulic cylinder outputs of the rotary handle of the fitting 1 np, 17 ill.

Description

The inventive hydraulic winch refers to the means of lifting from under the water of ships, surface ships, submarines and other large objects.

The need to lift sunken submarines is due to the fact that nuclear submarines (nuclear submarines) have stockpiles of radioactive materials, nuclear missiles, which over time will depressurize strongly affect the ecology of the oceans, there is a need to find out the causes of the disaster in order to prevent them on other submarines , as well as to preserve the secrets associated with the device of the nuclear submarine. Only at the bottom of the Barents Sea is at least 6 nuclear submarines. And one of the main reasons is crew rescue.

Known lifting systems for lifting sunken objects without compensation for their weight. These include devices mounted on catamaran type ships using hydraulic lifting mechanisms [1]. However, these devices are intended mainly for lifting small-sized objects, low efficiency when lifting a sunken object from a great depth, caused by a large amount of underwater technical work.

The aim of the invention is to increase the efficiency of lifting work. A ship-lifting device mounted on a ship is known, comprising arched trusses carrying lifting slings with guards connected to winches.

The device has the following disadvantages. Gini, containing cables passed through tackles, have their own considerable weight, which at large depths reduces the payload. The used construction of the chain hoists has low efficiency, significant wear of the rope, since the movement of the rope when moving from the lower holder to the upper is carried out in different planes [2].

The main disadvantages of the known technical solutions are restrictions on the weight of sunken objects due to the limited carrying capacity of floating cranes (for modern technology, about 12,000 tons), and on the maximum depth of a ship lifting operation. Until recently, this depth was limited, at least for large objects, to the maximum depth of the work of divers (in ordinary equipment - 60 m). For diving to great depths, special diving equipment is required, however, even in this case, the practical work of divers has not been carried out at depths of more than 300 m.Therefore, ship-lifting operations at great depths have been performed using remotely controlled mechanical grips installed on the immersed platform. In the process of a ship lifting operation, one has to deal with a tear-off weight (lifting

force) equal to the sum of lifting weight and tear-off force. For large silted objects, the tear-off weight reaches significant absolute values, even if by preliminary blowing the weight in the water of the sunken object is reduced to zero.

Particularly dangerous are dynamic forces caused by resonance phenomena on crane equipment and load-bearing connections, which often break during the lifting of a sunken object.

To increase the efficiency of the ship-lifting operation, including reducing the dynamic loads on the load-bearing connections, it was proposed to make a rescue vessel in the form of a catamaran, each of the hulls of which is equipped with a lot of low-inertia winches with a hydraulic turbine drive, which are distributed along each hull of the catamaran [3].

The strength of the hotel load-bearing connection is chosen so that it does not collapse under the most adverse circumstances.

By increasing the number of winches and flexible connections, you can almost unlimitedly increase the total carrying capacity of a rescue vessel.

Creating large lifting efforts by increasing the number of winches allows you to abandon bulky crane devices that have a large windage, which significantly reduces the seaworthiness of known life-saving appliances.

In addition, through the use of many flexible connections; evenly distributed along the body of the sunken object, as well as the relatively insignificant tension of each connection, it becomes possible to use even weak structures on the sunken object for their fastening.

The inventive hydraulic winch is a powerful structure that can withstand very large loads from 18,000 tons to 40,000 tons.

This design is designed to lift sunken submarines (ships). It is installed on ships with a carrying capacity of tens of thousands of tons. It can be two connected barges or a giant barge with an open bottom. Depending on the loads to be hoisted on such barges, 8-10 hydraulic winches can be sequentially installed according to the claimed technical solution, of a certain length, width and height (calculated). This technical solution is one of the links in a whole complex of mechanisms necessary for raising sunken submarines.

The hydraulic winch according to the patent of the Russian Federation No. 2038285 [4] is selected as the closest in design analogue, containing a housing with a cable drum and a hydraulic actuator including four hydraulic cylinders kinematically through connecting rods connected to the drum shaft and control valves. Hydraulic cylinders are installed in pairs on both sides of the drum and are connected to its shaft through connecting rods with clips. One of the hydraulic cylinders in each pair is connected to the cage by its body

rigidly, and the rod with the body of the winch is pivotally, and other hydraulic cylinders in pairs to the rods of the connecting rods are pivotally connected by rods, and the bodies (cylinders) are connected to the body of the winch. In a hydraulic winch, the hinges of the hydraulic cylinders on the winch body for each pair are located on one straight line passing through the central axis of rotation of the connecting rods. However, the known winch does not have a device that provides synchronous operation of sequentially installed winches, and does not allow to increase the total lifting capacity of the rescue device.

The technical result of the claimed utility model is to increase operational characteristics by increasing the depth and weight of the lifted object.

The claimed technical result is achieved in that the hydraulic winch containing a power shaft with a cable drum and a hydraulic actuator including hydraulic cylinders, through connecting rods connected to the drum shaft, also consists of a split reinforced frame, on the side racks of which a power shaft with two drums mounted on two is mounted splines, and each of the drums along the rim has gear cutouts with the possibility of contact with the ends of the rods of the winch hydraulic cylinders, and the central part of the power shaft to exclude deflection under load a support provided with a wheel fitted on the splines,

wherein the winch frame is made of two parts of the side and two parts of the transverse racks, which, after laying the power shaft on the lower side racks of the winch, are connected together by tightening bolts, while the system assembled on the power shaft is made to rotate by means of hydraulic cylinders, fixed on the supporting shafts of the lower and upper parts of the frame on both sides of the winch, through a fitting that provides hydraulic oil simultaneously to two hydraulic cylinders on one and the other side of the winch,

the fitting is made with the inlet and outlet of hydraulic oils, side plugs, sealing cuffs, a rotating core with transverse transfer channels made at an angle in the upper and lower parts of the core, transverse pipes, a transfer pipe with a rotary handle of the nozzle core,

while the hydraulic cylinders of the rotary handle of the nozzle core are installed one on each side of the winch, with the possibility of interaction with other hydraulic cylinders of the winch to switch the direction of flow of hydraulic oil,

at the same time, one outlet of the nozzle is connected by hoses to the inlets of the winch hydraulic cylinders, and other outlets of the nozzle are connected to the outputs of the winch hydraulic cylinders, to which the outputs of the hydraulic cylinder of the rotary handle of the nozzle are connected.

The essence of the utility model is illustrated by graphic materials.

The figure 1 schematically shows a General view of the winch assembly.

Figure 2 shows a sketch of a hydraulic winch frame with side posts (a) consisting of two parts (upper and lower), transverse sides (b) consisting of two parts (upper and lower), upper (c) and lower (d) winch parts with support shafts 3.

The figure 3 schematically shows a side view of the wheel of the drum 7 with slots 4 and teeth 5.

The figure 4 shows a schematic illustration of a power shaft 1 containing slots 6 for mounting the wheels of the drum and the middle support of the power shaft 1, which also divides the drum into two parts and separates the winding of the cable for each half of the drum from each other.

Figure 5 schematically shows the assembly of the rotating part of the power shaft 1 with exemplary parameters that allow enough cable to be wound around the drum to lower the gripper to great depths.

The figure 6 schematically shows four hydraulic cylinders 23 of the lower side of the winch with rods 20 and trailer 21 of the rods, drums 7 communicating with hoses 22, nozzles 23a, inputs and outputs 25 for hydraulic oils.

Figure 7 schematically shows similar details as in Figure 6, on the upper side of the winch: four hydraulic cylinders 23 of the upper side of the winch with rods 19 and end rods 21, drums 7 communicating with hoses 22, nozzles 23a, inputs and outputs 25 for hydraulic oils.

Figure 8 schematically shows a fitting 29a with an input for pumping hydraulic oils and their output, side plugs 28, sealing cuffs 30, a rotating core 36, in which transverse transfer channels 31 are made, made at an angle of 60 ° from the vertical in the upper and lower parts of the core, transverse nozzles 27, a rotary handle 35 with a transfer nozzle 33.

The figure 9 schematically shows the device block for palispast (figa), the device of the stopper 56, mounted on the support shaft 3 (figb).

The figure 10 schematically shows the mounting location 41 of the fittings 29a on the base of the winch 18 (Fig.9a), the middle support of the power shaft 1 with rollers (Fig.9b), and the mounting clamp 51 (Fig.9c).

The figure 11 schematically shows a cross section of the power and support shafts 42 (Fig.11a), a cross section of the base for mounting the rollers and the frame of the winch 43 (Fig.11b), side view of the stopper 56 (Fig.11c) and the middle support 11 for the support shafts (Fig.11g).

The figure 12 schematically depicts a hydraulic cylinder 23 with a piston 24, a rod 20 and an end switch 21.

The figure 13 schematically depicts a synchronous switching system of the rotary knobs 35 fittings with hydraulic cylinders 29a switching these knobs, output pipes 46A, springs 46 and valves 47, as well as plugs 48.

The figure 14 schematically shows the shape of the rods 49 for connecting the rotary knobs 35 fittings of a number of consecutively installed winches.

The figure 15 schematically shows the rack 50 for mounting the fittings on the base of the winch.

The figure 16 shows a cross section of the fitting with the inlet and outlet of the hydraulic oils 27, 34, tightening bolts 52, the flange 29, the body of the fitting 29a and the core 36.

The figure 17 schematically shows the counterweight 53, the mounting location and the pusher 55, pressing the upper hydraulic cylinders to the wheel rim of the drum 7.

The hydraulic winch (Fig. 1) consists of: frame 18 (Fig. 2a, b, c, d), the power shaft 1 of the winch, the support shaft 2 of the hydraulic cylinder, the support shaft 3 of the stopper 56, the stop 3a for the stopper 56, the splines of the drum wheel 4 , teeth 5 of the drum wheel (FIG. 3), splines 6 of the power shaft support wheel (FIG. 4), drum 7 wheels, power shaft support part 8, cable winding place 9, power shaft flange 10, middle lower support 11 for the supporting shaft of the hydraulic cylinder and stopper (Fig. 11), fixing bolts 12, saddles 13 for the supporting shafts, braces 14 (Fig. 1), peg 15, coupling bolts 16, side racks 17 of the winch , the frame 18 of the winch 18, the rod 20 of the hydraulic cylinder (Fig. 12), the trailer end 21 of the rod of the hydraulic cylinder, the connecting hose 22, the body of the hydraulic cylinder 23, the pipe 23a, the piston 24 of the hydraulic cylinder, the inlet and outlet of the hydraulic oil 25, the base of the hydraulic cylinder 26. In addition, the claimed hydraulic the winch contains: a nozzle for hydraulic oils 27 (Fig. 8), side plugs 28, a fitting flange 29, a nozzle body 29a, sealing lips 30, internal channels 31 of a fitting, output nozzles 32, a transfer nozzle 33 of a fitting, a nozzle for draining hydraulic oil 34, 35 core rotary knob ka fitting, the core of the fitting 36 with channels, the base of the stopper 36a (Fig.9), the tooth of the stopper 37, the wheel of the block palispast 38, the axis of the block 39, rollers 40 for the wheels of the support of the power shaft (Fig.10), the mounting point of the fitting 41, place fastenings of the end of the cable 41a, a cross section of the shafts 42 (Fig. 11), a cross section of the base for the rollers and the winch frame 43, the cylinder for switching the rotary handle of the core of the fitting 44 (Fig. 13), the piston 45, the rod 45a, the spring 46, the outlet pipe 46a, valve 47, plug on thread 48, rod 49 (FIG. 14), strut for mounting the fitting 50 (FIG. 15), mounting clamp 51, st clamping bolts 52, the counterweight 53 (17), the counterweight support axis 54, the pusher 55 of the counterweight.

The inventive hydraulic winch is a powerful structure capable of withstanding loads from 18,000 tons to 40,000 tons.

Depending on the loads intended for lifting, 8-10 hydraulic winches of the calculated length, width and height can be sequentially installed. The principle of operation of the inventive winch is based on the use of the efforts of hydraulic cylinders, the principles of the lever and gate.

The entire rotating assembly of the winch (figure 5) is arranged on the power shaft 1, which its supporting part 8 is placed on the bed of the lower side rack 17 of the winch. To facilitate the installation of the power shaft 1 with the assembly (Fig. 5), the winch frame is made of two parts of the side and two transverse racks (upper and lower), which, after laying the power shaft 1 on the lower side racks of the winch 17, are connected together using a coupling bolts 16. On the power shaft 1, the wheels of the drum 7 with teeth 5 are mounted, the operative part 8 of the power shaft, the wheel 6a of the power shaft support. All these wheels (7 and 6a) of the hard winch are fixed on the slots 4 and 6 (Figs. 3, 4). Among other things, the wheels 6a of the support of the power shaft 1 act as a dividing boundary between the two wheels of the drums 7, that is, it separates the wound coils of the cables of both drums 7. All this rotating part (figure 5) is brought into rotation of the drum wheel 7 using hydraulic cylinders 23 (Fig. .12), abutting their rods 20 with the ends 21 into teeth 5 specially cut along the rim of the drum 7 (Figs. 1, 5). The distance L1 between the ends of the teeth 5 of the wheel of the drum 7 should be slightly less than the working stroke L2 of the piston 24. This is necessary for the reliable end of the end 21 of the rod 20 of the hydraulic cylinder 23 to mesh with the teeth 5 of the wheel of the drum 7. To prevent the shift of the power shaft 1 from the side posts 17 is provided flange 10 (figure 5).

The operation of the winch depends on the operation of the hydraulic cylinders 23 together with the rods 20 and the ends of the rods 21. They, in turn, are driven by pumps of high capacity and pressure. To transfer pressure to the hydraulic cylinders 23, a nozzle 29a (Fig. 8) with curved internal channels 31 in the core of the nozzle 36 and the body of the nozzle 29a are used.

For the automatic operation of the entire system of rotation and lifting of the load, in this case, on the first of a series of sequentially installed winches on each side, one hydraulic cylinder 44 (rotary handle of the fitting) is installed, which, interacting with other hydraulic cylinders 23 of the first winch, will rhythmically switch the rotary handles 35 fittings (figure 8) of the remaining winches to the left and right 60 ° from the vertical (Figs. 13, 14), which will allow switching the direction of hydraulic oil flow either under one or the other pistons of hydraulic cylinders 23 and 44. and 49 and the stroke of the piston 45 of the hydraulic cylinder 44 should be equal. To create a stop for the hydraulic cylinders 23 and the stopper 36a, support shafts 2 of the hydraulic cylinder and 3 stoppers (Fig. 1) of sufficient strength are used both for the hydraulic cylinders 23 themselves and

stoppers 36a, which will prevent the drums 7 from rotating in the opposite direction, that is, do not allow the cable to unwind. In the initial position, the lower hydraulic cylinders 23 with the rods 20 and the ends 21 will be inclined at an angle to the rim of the drum 7 and will constantly engage with the teeth 5 of the wheel of the drum 7. The upper hydraulic cylinders 23 with the rods 20 and the ends 21 will be counterbalanced via the pusher 55 55 pressed to the rim of the drum 7 for engagement with the teeth 5 (Fig.1, 17). A feature of the operation of the hydraulic cylinders 23 for switching the rotary knobs 35 of the core 36 is that the rotary knobs 35 deviate from each side of the winch in opposite directions 60 ° from the vertical (FIGS. 13, 14), which allows directing the flow of hydraulic oils under different pressures to different pairs of hydraulic cylinders 23 (I and Iv on one side of the winch and II and II on the other side of the winch). In this case, one pair of rods 20 with trailer 21 on one side of the winch will act on the teeth 5 of the drum wheel 7 from the edges of the rim, and another pair of rods 20 with trailer 21 on the other side of the winch will act on the teeth 5 of the rim of the wheel 7 of the drum 7 from the middle.

For the operation of the hydraulic cylinder 44 for switching the rotary knobs_35 in the upper part of the bodies of the hydraulic cylinders 23 of the first winch (Fig. 6, 7), a pipe 23a for the hydraulic hose is welded to the inlets 1 or 2 on a section of the lower edge of the piston 24 located at the upper point of the working stroke the hydraulic cylinder 44 (output 1 of the hydraulic cylinder 23-I to the input 1 of the hydraulic cylinder 44, and the output 2 of the hydraulic cylinder 23-II to the input 2 of the hydraulic cylinder 44, each output 1 or 2 of the hydraulic cylinder_23 (I or II)) is connected to the inputs 1 or 2 of the hydraulic cylinder 44 through a separate valve 47.

The outputs of the nozzle 1 and 2 (6, 8) must be connected by hydraulic hoses to the inputs 1 and 2 of the hydraulic cylinders 23, and the outputs 3 and 4 of the nozzle (Fig. 8) with the outputs 3 and 4 of the hydraulic cylinders 23. To the same outputs (3 and 4) the outputs 3 and 4 of hydraulic cylinder 44 must be connected via tees. So that the hydraulic oil does not pass from the upper part I or II of the hydraulic cylinders 23 to the hydraulic cylinder 44, a plunger valve 47 is provided, which will operate only when the hydraulic oil arrives from the nozzle_29a (output 1 or 2) under high pressure. For synchronous operation of hydraulic cylinders I and II 23 (raising and lowering), a communicating hose 22 is provided, through which the hydraulic oil from one hydraulic cylinder 23 (upper part) will be distilled at lifting one piston 24. the space under the piston 24 of the other hydraulic cylinder 23, lower it and squeeze the hydraulic oil from under the piston 24 into the container.

The calculation of the length of the cable, which can be wound on one of the winch drums with the above parameters (FIG.5):

- drum width - 300 cm

- diameter of a power shaft - 50 cm

- drum height - 10 cm (baht height - 5 m)

- cable diameter - 20 cm.

We get:

- number of turns - 300 cm: 20 cm = 15

- number of rows - (500 cm: 20 cm): 2≈12

The length of one turn according to the formula

PD = Length of a row of PD * 15

Each subsequent row diameter will increase by 40 cm (double cable diameter)

1st row: 3.14 * 50 * 15 = 23 m 55 cm

3rd row: 3.14 * 130 * 15 = 61 m 29 cm

4th row: 3.14 * 170 * 15 = 80 m

5th row: 3.14 * 210 * 15 = 99 m

6th row. 3.14 * 250 * 15 = 117 m

7th row: 3.14 * 290 * 15 = 137 m

8th row: 3.14 * 330 * 15 = 156 m

9th row: 3.14 * 370 * 15 = 180 m

10th row: 3.14 * 410 * 15 = 193 m

11th row: 3.14 * 450 * 15 = 211 m

12th row: 3.14 * 490 * 15 = 230 m.

Total cable length ≈ 1530 m.

Using palispastes, you can lower the grippers to a depth of 1530: 2 = 765 meters.

Hydraulic winch operation

Lowering the entire structure of various gripping devices (for modern and promising submarines) is carried out using cranes, since the proposed hydraulic winch provides lifting only loads. First of all, it is necessary to stop all the hydraulic cylinders 23 with the ends 21 and all the stoppers 37, that is, remove them from engagement with the teeth 5. Under the influence of the weight of the gripping devices, the cables are unwound from the drums 7. Cranes lower the gripping device to the sunken submarine. Capture is in progress. The hydraulic cylinders 23 are introduced by the end-switches 21 into engagement with the teeth of the rim 5. Introduce into engagement of the stopper. To start the work of all winches, it is necessary to translate the rotary handles 35 to one side 60 ° from the vertical. In the initial position, when the rotary knobs _35 are in the neutral position, the channels 31 (Fig. 8) are closed. After translating the rotary handle 35 to one of the extreme positions, include hydraulic pumps of all winches. The hydraulic oil under high pressure enters through the nozzle 27 into the fitting (Fig. 8) to the inlet 1, 2 of the channel 31 and further under the piston 24 (I and Iv) on the one hand, and on the other side of the winch - under the piston 24 (II and III) picking them up. In this case, the rods 20

hydraulic cylinders 23 through the ends 21 will exert pressure on the teeth 5 of the rim of the drum 7 on one side of the winch to the edges of the rim (Fig.6), and on the other side of the winch from the middle of the rim (Fig 7). As the piston 24-I rises to the upper point of the hydraulic cylinders 23, the outlets of the nozzles 23a open, and the hydraulic oil enters the inlet 1 of the hydraulic cylinder 44 through a valve 47, lowers the piston 45 down, thereby pushing the rod 45a down and through the rods 49 act on the rotary handles 35 and deflect them 60 ° from the vertical to the other side. When the hydraulic cylinder 44 is activated, the rotary handles 35 on one side of the winch will deviate to one side, and on the other side of the winch to the other. Therefore, on one side of the winch, channels 1 and 4 of the nozzle and body core will be combined, and on the other side, channels 2 and 3 will be combined. In this case, the pressure of the rods 20 of the hydraulic cylinders 23 on the teeth 5 of the rim will be simultaneously carried out by four hydraulic cylinders 23.

To synchronize the operation of a number of consecutively installed winches, only one hydraulic cylinder is used on each side of the first winch, which automatically connects the rotary handles of all fittings with their rods through the rods, which ensures the simultaneous inclusion of half the hydraulic cylinders of all winches, and after switching the rotary handles of the fittings in the opposite direction to work the hydraulic cylinders of the other half instead of the first, and such work will be carried out continuously.

Thus, the work of sequentially installed winches will be carried out automatically. To stop the winch, turn off the hydraulic pumps.

The advantage of the inventive hydraulic winch is that its design allows using a series of successively installed such winches to increase the total load capacity, which is achieved, first of all, by using a device that ensures the synchronous operation of all winches, a device that distributes hydraulic oil flows through cylinders 23 and 44 (using fittings 29a), which allows you to act on the teeth 5 of the rim of the wheel of the drum 7 at the same time four rods 20 with the ends 21. This technical solution is one of of the whole complex of mechanisms necessary for raising sunken submarines.

INFORMATION SOURCES

1. RF patent No. 2043257. "A method of lifting a sunken object and a system for its implementation."

2. RF patent No. 20133301. "Ship device for lifting a sunken object."

3. RF patent No. 2269448. "The method of lifting a sunken object."

4. RF patent No. 2038285. "Hydraulic winch" is the closest analogue.

Claims (1)

A hydraulic winch comprising a power shaft with a cable drum and a hydraulic actuator including hydraulic cylinders through connecting rods connected to the drum shaft, characterized in that the winch also consists of a split reinforced frame, on the side racks of which a power shaft with two drums mounted on the splines is mounted, moreover, each of the drums along the rim has gear cutouts with the possibility of contact with the ends of the rods of the winch hydraulic cylinders, and the central part of the power shaft is provided with a support in the form of wheel mounted on the splines, while the winch frame is made of two parts of the side and two parts of the transverse racks, which, after laying the power shaft on the lower side racks of the winch, are connected together by means of coupling bolts, while the system assembled on the power shaft is made with the possibility of bringing into rotation by means of hydraulic cylinders mounted on the supporting shafts of the lower and upper parts of the frame on both sides of the winch, through a fitting that provides hydraulic oil to two hydraulic cylinders simultaneously on one side and the other winches, while the nozzle is made with the entrance and exit of hydraulic oils, side plugs, sealing cuffs, a rotating core with transverse transfer channels made at an angle in the upper and lower parts of the core, transverse pipes, a transfer pipe with a rotary handle of the nozzle core, while the hydraulic cylinders are rotary nozzle core handles are installed one on each side of the winch, with the possibility of interaction with other winch hydraulic cylinders to switch the flow direction of the hydraulic In this case, one outlet of the nozzle is connected by hoses to the inlet of the winch hydraulic cylinders, and other outlet of the nozzle is connected to the outlet of the winch hydraulic cylinders, to which the outlets of the rotary handle of the nozzle are connected.