KR102526201B1 - Hydraulic winch with quick release valve - Google Patents

Abstract

Provided is a hydraulic winch equipped with a quick release valve. According to the present invention, the hydraulic winch equipped with a quick release valve comprises: a winch device installed on one side of a ship and equipped with a hydraulic motor to wind up a wire rope connected to a trawl net; and a quick release valve which supplies hydraulic oil to the hydraulic motor and releases it by switching the flow direction of the hydraulic oil when a vacuum occurs inside the hydraulic motor.

Description

Hydraulic winch with quick release valve {Hydraulic winch with quick release valve}

The present invention relates to a hydraulic winch equipped with a quick release valve, which is installed on one side of a hydraulic oil supply line of the hydraulic winch to automatically supply hydraulic oil to a hydraulic motor when the hydraulic winch is abnormally operated, thereby preventing damage to the quick release valve It relates to a hydraulic winch equipped with.

The present invention provides a hydraulic winch equipped with a quick release valve to prevent damage by supplying a certain amount of hydraulic oil to the hydraulic motor to maintain tension when a large load is applied by an external force so that the winch operates in a direction in which an external force is generated. It's about the winch.

The present invention relates to a hydraulic winch equipped with a quick release valve to prevent damage due to friction by supplying a certain amount of hydraulic oil when a vacuum is generated inside a hydraulic motor due to forced operation by an external force.

The present invention relates to a hydraulic winch equipped with a quick release valve configured to have a compact size by integrating a plurality of valves and flow passages therein so that maintenance and management are easy.

The present invention relates to a hydraulic winch equipped with a quick release valve capable of preventing not only the hydraulic winch but also auxiliary facilities such as a clutch from being damaged even if an abnormal situation occurs while the clutch or the like is operating.

In general, a winch is used for lifting or lowering a heavy object from the sea by winding and dissociating a wire rope or chain connected to the winding drum by rotating a winding drum, and such a winch requires relatively strong force to lift a heavy object. As it is required, a motor with a high horsepower is used accordingly.

In addition, the winch uses a motor as a power source and installs a drum on the drive shaft of the motor to rotate the drum forward and backward, thereby winding or unwinding a wire rope or chain connected to a heavy object such as an anchor.

In addition, the winch is configured to transmit power using the pressure of a fluid and is widely used in various technical fields.

1 is a schematic diagram showing a hydraulic element protection device disclosed in Republic of Korea Utility Model Publication No. 20-1998-0031864, and when testing the durability of hydraulic elements such as a hydraulic cylinder and a hydraulic motor, hydraulic lines are damaged and all hydraulic oil is It is configured to prevent the engine from continuing to run and damaging the hydraulic element in case of exposure.

However, the prior art of FIG. 1 is a device for restraining the hydraulic winch from moving in a damaged or malfunctioning state, and does not have a function to protect the hydraulic winch from being damaged when it is abnormally operated by an external force.

Republic of Korea Patent Publication No. 10-2012-0118729 discloses a stable mooring of a floating body floating on the sea as shown in FIG. 2 and rapid control in the event of an emergency so that damage to the hull, peripheral devices and equipment can be minimized Marine An anchoring winch system is disclosed.

However, the prior art of FIG. 2 is a technique in which the rope connected to the floating body is unwound or wound so that the tension applied to the rope can be constantly adjusted. don't have

Republic of Korea Patent Registration No. 10-2073946 discloses a manual overload prevention system for a ship crane that can prevent damage to the hull or other fixed bodies by quickly releasing the hoist line of the crane in case of emergency as shown in FIG. 3.

However, the prior art of FIG. 3 has a problem in that a danger arises when an operator does not grasp the exact situation or does not make a quick decision because the operator must manually operate the device in case of an emergency.

In addition, if an auxiliary facility such as a clutch is in operation when an emergency occurs, damage to the auxiliary facility as well as the hydraulic winch is undesirable.

On the other hand, the winch may be used for mooring according to the purpose of use of the ship, or may be used to raise the trawl when applied to a fishing boat.

Korean Patent Laid-open Publication No. 10-2021-0033244 discloses a driving module for a fishing net so that hydraulic pressure generation and hydraulic pressure control can be simultaneously implemented using electricity in a unit module as shown in FIG. 4.

However, in the case of a winch for fishing, since the range of change in the amount of catch is wide, if the winch is excessively raised when the amount of catch is large, it is not desirable to cause the overturn of the fishing boat.

An object of the present invention is to solve the problems of the prior art as described above, and is installed on one side of the hydraulic oil supply line of the hydraulic winch to prevent damage by automatically supplying hydraulic oil to the hydraulic motor when the hydraulic winch is abnormally operated It is to provide a hydraulic winch equipped with a quick release valve.

Another object of the present invention is to maintain the tension by supplying a certain amount of hydraulic oil to the hydraulic motor when the hydraulic winch is subjected to a large load due to external force, thereby operating in the direction where the external force is generated to prevent breakage. It is to provide a hydraulic winch equipped with.

Another object of the present invention is to provide a hydraulic winch equipped with a quick release valve to prevent damage due to friction by supplying a certain amount of hydraulic oil when a vacuum is generated inside the hydraulic motor due to forced operation by external force. is in providing

Another object of the present invention is to provide a hydraulic winch equipped with a quick release valve that is easy to maintain and manage by having a quick release valve configured to have a compact size by integrating a plurality of valves and flow paths therein.

Another object of the present invention is to provide a hydraulic winch equipped with a quick release valve that can prevent damage to auxiliary facilities such as the clutch as well as the hydraulic winch in advance even if an abnormal situation occurs while the clutch is operating. there is something

The hydraulic winch equipped with a quick release valve according to the present invention for achieving the above object is installed on one side of a ship and has a hydraulic motor to wind a wire rope connected to a trawler. Supplying a winch device and hydraulic oil to the hydraulic motor , It is characterized in that it is configured to include a quick release valve that releases by switching the flow direction of hydraulic oil when a vacuum is generated inside the hydraulic motor.

The quick release valve includes a valve block having a plurality of flow passages formed therein, a first inlet and a second inlet and outlet located on the outer surface of the valve block and communicating with the inside of the control valve, and located on the outer surface of the valve block to obtain the hydraulic pressure A third inlet and a fourth inlet and outlet communicating with the inside of the motor, a counterbalance valve installed at the first inlet and outlet and selectively communicating with the second inlet and outlet to generate back pressure at the first inlet and outlet, and a flow direction of hydraulic oil inside the valve block 1st check valve, 2nd check valve, 3rd check valve and 4th check valve for switching, a release solenoid valve that selectively allows the flow of hydraulic oil when operated by a user, and hydraulic oil from the outside when the release solenoid valve operates. A first release valve for supplying the hydraulic oil introduced into the release port to the inside of the hydraulic winch after passing through any one or more of the first check valve to the fourth check valve,

It is characterized in that it is configured to include a second release valve for maintaining a constant pressure of the hydraulic oil flowing by the first release valve.

A control valve for switching the flow direction of the hydraulic oil supplied into the hydraulic motor, a hydraulic oil storage tank in which hydraulic oil is stored, and a hydraulic pump for pumping hydraulic oil from the hydraulic oil storage tank and supplying the hydraulic oil to the outside. Characterized in that it further comprises.

When a vacuum is generated inside the hydraulic winch when the hydraulic oil flowing into the second inlet and outlet sequentially passes through the fourth inlet, the third inlet, and the first inlet and outlet, the third check valve is opened, and the first release valve is a release valve. It is characterized in that hydraulic oil is introduced into the port.

The first check valve, the second check valve, the third check valve and the fourth check valve are designed to have the same allowable pressure.

The first check valve and the second check valve are disposed in opposite directions on the same flow path, and the third check valve and the fourth check valve are disposed on the same flow path in opposite directions.

A volume control valve is provided at one side of the valve block to adjust a volume ratio of hydraulic oil passing through the hydraulic winch in a state in which hydraulic oil is supplied to the release port.

In the present invention, it is installed on one side of the hydraulic oil supply line of the hydraulic winch and is configured to prevent damage to the hydraulic winch by automatically supplying hydraulic oil to the hydraulic motor when the hydraulic winch is abnormally operated.

In addition, when the hydraulic winch is subjected to a large load by an external force, it is possible to prevent damage by supplying a certain amount of hydraulic oil to the hydraulic motor to maintain tension so that the winch operates in a direction in which an external force is generated.

In addition, when a vacuum is generated inside the hydraulic motor due to forced operation by an external force, a certain amount of hydraulic oil is supplied to prevent damage to the hydraulic winch due to friction or the like.

In addition, it is easy to maintain and manage by providing a quick release valve having a compact size by integrating a plurality of valves and flow paths therein.

In addition, even if the operator does not respond quickly and the clutch is operating in an abnormal situation, damage to auxiliary facilities such as the clutch as well as the hydraulic winch can be prevented in advance.

1 is a schematic diagram showing a hydraulic element protection device disclosed in Korean Utility Model Publication No. 20-1998-0031864;
2 is a schematic view showing the structure of a marine anchoring winch system disclosed in Korean Patent Publication No. 10-2012-0118729.
Figure 3 is a schematic diagram showing a manual overload prevention system of a ship crane disclosed in Korean Patent Registration No. 10-2073946.
4 is a perspective view showing a driving module for a fish net disclosed in Korean Patent Publication No. 10-2021-0033244;
Figure 5 is a schematic structural diagram of a hydraulic winch equipped with a quick release valve according to the present invention.
Figure 6 is a detailed view showing the connection of the quick release valve and the control valve in the hydraulic winch equipped with a quick release valve according to the present invention.
7 is a hydraulic circuit diagram showing the internal structure of a hydraulic winch equipped with a quick release valve according to the present invention.
8 is a top perspective view showing the front appearance of a quick release valve, which is a main part of a hydraulic winch equipped with a quick release valve according to the present invention.
9 is a bottom perspective view showing the rear appearance of the quick release valve, which is a main part in the hydraulic winch equipped with the quick release valve according to the present invention.
10 is a hydraulic circuit diagram showing the internal structure of a quick release valve, which is a main part in a hydraulic winch equipped with a quick release valve according to the present invention.
11 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when the hydraulic winch is operated in a forward direction in a hydraulic winch equipped with a quick release valve according to the present invention.
12 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when the hydraulic winch is operated in the reverse direction in the hydraulic winch equipped with a quick release valve according to the present invention.
Figure 13 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when a vacuum is generated inside the hydraulic winch while the hydraulic winch is operating in the forward direction in the hydraulic winch equipped with a quick release valve according to the present invention.
Figure 14 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when a vacuum is generated inside the hydraulic winch while the hydraulic winch is operating in the reverse direction in the hydraulic winch equipped with a quick release valve according to the present invention.
15 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when a user operates in a quick release mode in a hydraulic winch equipped with a quick release valve according to the present invention.

Hereinafter, the configuration of the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention will be described with reference to attached FIG. 5 .

5 shows a schematic structural diagram of a hydraulic winch 10 equipped with a quick release valve 200 according to the present invention.

Prior to this, the terms or words used in this specification and claims should not be interpreted in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents that can replace them at the time of the present application. It should be understood that there may be waters and variations.

As shown in the drawing, the hydraulic winch 10 is installed on the deck D of the ship and is configured to wind or disengage the wire rope by rotating. In the embodiment of the present invention, the hydraulic winch 10 is a wire connected to a trawl net. It acts to wind up or unwind the rope.

To this end, the hydraulic winch 10 supplies a winch device 100 equipped with a hydraulic motor 110 and hydraulic oil to the hydraulic motor 110, and changes the flow direction of hydraulic oil when a vacuum is generated inside the hydraulic motor 110. It is configured to include a quick release valve 200 to be released.

The winch device 100 has a number of parts connected, and on the upper side of the deck D, a control valve 120 for switching the flow direction of hydraulic oil supplied to the inside of the hydraulic motor 110, and the quick release valve 200 ) and a hydraulic motor 110 are installed, a hydraulic oil storage tank 130 in which hydraulic oil is stored in the machine room below the deck D, and a hydraulic pump 140 for pumping hydraulic oil from the hydraulic oil storage tank 130 and supplying it to the outside. ) is installed.

A brake device 150 is installed on the right side of the winch device 100, and a brake cylinder pump 160 is connected to the machine room.

Therefore, the brake device 150 can operate separately from the winch device 100, and it is possible to ensure safety.

Hereinafter, the connection structure of the hydraulic pump 140, the control valve 120, and the quick release valve 200 will be described with reference to FIGS. 6 and 7 attached thereto.

6 is a detailed view showing the connection of the quick release valve 200 and the control valve 120 in the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention. 7 is a hydraulic circuit diagram showing the internal structure of the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention.

As shown in the drawing, a hydraulic pump 140 is installed above the hydraulic oil storage tank 130, and the inside of the hydraulic pump 140 communicates with the inside of the hydraulic oil storage tank 130 so that hydraulic oil can be supplied.

And, as shown in FIG. 6, a first supply pipe 142 selectively communicating with the control valve 120 and the quick release valve 200 is provided on the left side of the hydraulic pump 140, and the right side of the hydraulic pump 140 A second supply pipe 144 communicating with the control valve 120 is installed.

In addition, a branch pipe 146 is provided on one side of the first supply pipe 142 so that some of the hydraulic oil passing through the first supply pipe 142 can be branched to the control valve 120, and the branch pipe 146 is It is connected to communicate with the inside of the control valve 120.

The end of the first supply pipe 142 is connected to the release port 240, which will be described below, and the hydraulic oil passing through the control valve 120 is connected to the upper side of the control valve 120 to the quick release valve 200 and A first circulation valve 122 and a second circulation valve 124 are provided to be recovered again after passing through the hydraulic motor 110 .

The circulation direction of the first circulation valve 122 and the second circulation valve 124 may change as the control valve 120 switches the flow direction of hydraulic oil. That is, the control valve 120 may guide the hydraulic oil flowing through the first supply pipe 142 and the second supply pipe 144 in an upward direction as shown in FIG.

Hereinafter, the configuration of the quick release valve 200 will be described with reference to FIGS. 8 to 10 attached thereto.

8 is a top perspective view showing the front appearance of the quick release valve 200, which is a main part of the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention, and FIG. In the hydraulic winch 10 equipped with the quick release valve 200, a bottom perspective view showing the rear appearance of the quick release valve 200, which is the main part, is shown, and in FIG. 10, the quick release valve 200 according to the present invention A hydraulic circuit diagram showing the internal structure of the quick release valve 200, which is a main part of the provided hydraulic winch 10, is shown.

As shown in the drawing, the quick release valve 200 is located between the hydraulic winch 10 and the hydraulic oil storage tank 130 and is configured to control the flow direction of hydraulic oil. have

In addition, the quick release valve 200 switches the flow direction of hydraulic oil when a vacuum is generated inside the hydraulic motor 110 to release the vacuum state, thereby preventing friction and damage due to insufficient hydraulic oil inside the hydraulic motor 110 in advance. will be.

To this end, the quick release valve 200 has a valve block (B) formed with a plurality of oil passage holes formed therein, and a first inlet and outlet (202) located on the outer surface of the valve block (B) and communicating with the inside of the hydraulic motor (110) ) And the second inlet and outlet 204, the third inlet and outlet 206 and the fourth inlet and outlet 208 located on the outer surface of the valve block (B) and communicating with the inside of the hydraulic motor 110, and the first inlet and outlet ( 202) and selectively communicating with the second inlet and outlet 204 to generate back pressure in the first inlet and outlet 202, and a counterbalance valve 210 for changing the flow direction of hydraulic oil inside the valve block (B) The first check valve 222, the second check valve 224, the third check valve 226, and the fourth check valve 228, and a release solenoid valve 230 that selectively allows the flow of hydraulic oil when operated by a user And, when the release solenoid valve 230 operates, the release port 240 through which hydraulic oil is selectively introduced from the outside, and the hydraulic oil flowing into the release port 240 is supplied to the first check valve 222 and the second check valve ( 224), the first release valve 250 for guiding to be supplied into the hydraulic winch 10 after passing through any one or more of the third check valve 226 and the fourth check valve 228, and the first It is configured to include a second release valve 260 for maintaining a constant pressure of the hydraulic oil flowing by the release valve 250.

The first inlet and outlet 202 and the second inlet and outlet 204 are located on the lower side of the valve block (B) and communicate with the inside of the hydraulic pump 140, and the third inlet and outlet 206 and the fourth inlet and outlet 208 are It is located on the upper side of the valve block (B) and is configured to communicate with the inside of the hydraulic motor 110.

And the first inlet and outlet 202 and the third inlet and outlet 206 are connected to the first flow path 201 formed inside the valve block (B), and the second inlet and outlet 204 and the fourth inlet and outlet 208 are It is connected to the second flow path 203.

Therefore, the hydraulic motor 110 can generate rotational force in forward or reverse rotation according to the flow of hydraulic oil introduced through the first inlet and outlet 202 or the second inlet and outlet 204 .

A counterbalance valve 210 is installed between the first flow path 201 and the second flow path 203. The caustic balance valve operates to selectively communicate the first flow path 201 and the second flow path 203 to guide the flow of hydraulic oil so that back pressure can be generated at the first inlet and outlet 202.

A first check valve 222 to a fourth check valve 228 are installed between the first flow path 201 and the second flow path 203 .

More specifically, the first check valve 222 and the second check valve 224 are installed in the third flow path 205, both ends of which are connected between the first flow path 201 and the second flow path 203, The third check valve 226 and the fourth check valve 228 are installed in another fourth flow path 207 having both ends connected between the first flow path 201 and the second flow path 203 .

Also, the first check valve 222 and the second check valve 224 are configured to open at the same allowable pressure or higher, and are disposed in opposite directions.

The third check valve 226 and the fourth check valve 228 are also configured to open at the same allowable pressure or higher, and are disposed in opposite directions.

A fifth flow path 209 is connected between the third flow path 205 and the fourth flow path 207 . A first release valve 250 is installed in the fifth flow path 209 to control a direction so that hydraulic oil can flow to any one of the first check valve 222 to the fourth check valve 228.

The first release valve 250 is connected to the release solenoid valve 230 and the second release valve 260.

The release port 240 maintains a shielded state when the hydraulic winch 10 normally operates, and is configured to be opened when an external force is applied to the hydraulic winch 10 and a vacuum is generated therein.

The release port 240 is connected to the sixth flow path 242 formed inside the valve block (B), and the sixth flow path 242 is simultaneously connected to the fourth flow path 207 and the fifth flow path 209. there is.

Accordingly, the hydraulic oil flowing into the release port 240 according to the flow path opening direction of the first release valve 250 can pass through the third check valve 226 or the fourth check valve 228 .

The volume control valve 270 is a configuration that is selectively used only when hydraulic oil is introduced into the release port 240, and is connected to the seventh flow path 272 and the eighth flow path 274 communicating with the hydraulic winch 10. The hydraulic oil volume ratio inside the hydraulic winch 10 is controlled by changing the flow direction for the second flow path 203 and the eighth flow path 274.

Hereinafter, the operation of the quick release valve 200 when the winch device 100 rotates forward and backward will be described with reference to FIGS. 11 and 12 attached thereto.

11 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when the hydraulic winch 10 is operated in the forward direction in the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention, and FIG. In the hydraulic winch 10 equipped with the quick release valve 200 according to the invention, a hydraulic circuit diagram showing the flow direction of hydraulic oil when the hydraulic winch 10 is operated in the reverse direction is shown.

First, as shown in FIG. 11, when the hydraulic winch 10 operates in forward rotation, hydraulic oil flows into the second inlet and outlet 204, and the hydraulic winch 10 passes through the second flow path 203 and the fourth inlet and outlet 208. ) After passing through the inside, it exits through the third inlet and outlet 206 and the first passage 201 to the second inlet and outlet 204.

Conversely, when the hydraulic winch 10 operates in reverse rotation, hydraulic oil flows into the first inlet and outlet 202 as shown in FIG. ) After the hydraulic oil passes through the inside, it passes through the third inlet and outlet 206 and the second flow path 203 and exits through the second inlet and outlet 204.

At this time, since the same pressure acts on the first check valve 222 to the fourth check valve 228, they remain closed without opening.

In addition, in order to rotate the hydraulic winch 10 at a higher speed in the state shown in FIGS. 11 and 12, it is possible by opening the volume control valve 270 to increase the supply amount of hydraulic oil.

Hereinafter, the action of the quick release valve 200 when a vacuum is generated inside the hydraulic winch 10 will be described with reference to FIGS. 13 and 14 attached thereto.

13 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when a vacuum is generated inside the hydraulic winch 10 while the hydraulic winch 10 is operating in the forward direction in the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention 14 shows the flow direction of hydraulic oil when a vacuum is generated inside the hydraulic winch 10 while the hydraulic winch 10 is operating in the reverse direction in the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention A hydraulic circuit diagram showing is shown.

The factor for generating a vacuum inside the hydraulic winch 10 is when an external force (eg, strong tensile force) is applied to the hydraulic winch 10, and the flow rate of hydraulic oil supplied into the hydraulic winch 10 is less than the flow rate coming out It is a state.

When the hydraulic winch 10 is operated in forward rotation, as shown in FIG. 13, hydraulic oil is introduced into the release port 240, and then the vacuum state is released by supplying hydraulic oil to the oil passage through the third check valve 226. can

And when the hydraulic winch 10 operates in reverse rotation, the inflow of hydraulic oil into the release port 240 is the same as in FIG. The vacuum state can be released by supplying hydraulic oil.

Therefore, in the state shown in FIGS. 13 and 14, the vacuum state can be released due to the action of the quick release valve 200 even when the operator does not recognize the vacuum state.

Hereinafter, a process of operating the quick release mode by the operator will be described with reference to attached FIG. 15 .

15 is a hydraulic circuit diagram showing the flow direction of hydraulic oil when the user operates in the quick release mode in the hydraulic winch 10 equipped with the quick release valve 200 according to the present invention.

First, the operator who recognizes that the hydraulic winch 10 exceeds the required speed due to an external force in the forward rotation state releases the solenoid valve 230, the first release valve 250, and the second release valve 260 are simultaneously operated to introduce hydraulic oil into the release port 240.

At this time, the fourth check valve 228 is opened to supply hydraulic oil to the second flow path 203, and the hydraulic oil supplied to the second flow path 203 is supplied to the inside of the hydraulic winch 10 to release the vacuum state. be able to

In addition, the volume control valve 270 reversely controls the flow direction of the hydraulic oil supplied to the seventh flow path 272 and the eighth flow path 274, so that the hydraulic oil volume ratio inside the hydraulic winch 10 can be adjusted to a constant level.

In addition, the second release valve 260 maintains a constant pressure of hydraulic oil passing through the fourth check valve 228 .

The scope of the present invention is not limited to the embodiments exemplified above, and many other modifications based on the present invention will be possible for those skilled in the art within the above technical scope.

10. Hydraulic winch 100. Winch device
110. Hydraulic motor 120. Control valve
122. 1st circulation valve 124. 2nd circulation valve
130. Hydraulic oil storage tank 140. Hydraulic pump
142. First supply pipe 144. Second supply pipe
146. Branch pipe 150. Brake device
160. Brake cylinder pump 200. Quick release valve
201. Euro 1 202. Entrance 1
203. 2nd passage 204. 2nd entrance
205. 3rd passage 206. 3rd entrance
207. Pass 4 208. Entrance 4
209. 5th flow path 210. Counterbalance valve
222. First check valve 224. Second check valve
226. Third check valve 228. Fourth check valve
230. Release solenoid valve 240. Release port
242. 6th flow path 250. 1st release valve
260. Second release valve 270. Volume control valve
272. 7th Euro 274. 8th Euro
B. Valve Block D. Deck

Claims (7)

delete A winch device equipped with a hydraulic motor installed on one side of the ship and winding a wire rope connected to a trawler, and a control valve for switching the flow direction of hydraulic oil supplied to the hydraulic motor; In the hydraulic winch equipped with a quick release valve comprising a quick release valve that supplies hydraulic oil to the hydraulic motor and releases the flow direction by switching the flow direction of the hydraulic oil when a vacuum is generated inside the hydraulic motor,
The quick release valve,
A valve block having a plurality of flow passages formed therein;
A first inlet and a second inlet and outlet located on the outer surface of the valve block and communicating with the inside of the control valve;
A third inlet and a fourth inlet and outlet located on the outer surface of the valve block and communicating with the inside of the hydraulic motor;
A counterbalance valve installed at the first inlet and outlet and selectively communicating with the second inlet and outlet to generate back pressure at the first inlet and outlet;
A first check valve, a second check valve, a third check valve, and a fourth check valve for changing the flow direction of hydraulic oil inside the valve block;
A release solenoid valve that selectively allows the flow of hydraulic oil when operated by a user;
A release port through which hydraulic oil is selectively introduced from the outside when the release solenoid valve operates;
A first release valve for supplying the hydraulic oil flowing into the release port to the inside of the hydraulic winch after passing through one or more of the first to fourth check valves;
A hydraulic winch with a quick release valve, characterized in that it comprises a second release valve that keeps the pressure of the hydraulic oil flowing by the first release valve constant.
The method of claim 2, wherein the control valve for switching the flow direction of the hydraulic oil supplied to the inside of the hydraulic motor;
A hydraulic oil storage tank in which hydraulic oil is stored;
Hydraulic winch with a quick release valve, characterized in that it further comprises a hydraulic pump for pumping hydraulic oil from the hydraulic oil storage tank and supplying it to the outside.
The method of claim 3, wherein the third check valve is opened when a vacuum is generated inside the hydraulic winch when the hydraulic oil introduced through the second inlet and outlet sequentially passes through the fourth inlet, the third inlet and the first inlet and outlet, The first release valve is a hydraulic winch equipped with a quick release valve, characterized in that for inflow of hydraulic oil to the release port.
The hydraulic winch with a quick release valve according to claim 4, wherein the first check valve, the second check valve, the third check valve, and the fourth check valve are designed to have the same allowable pressure.
The method of claim 5, wherein the first check valve and the second check valve are disposed in opposite directions on the same flow path,
The third check valve and the fourth check valve are hydraulic winch equipped with a quick release valve, characterized in that disposed in the opposite direction on the same flow path.
The method of claim 6, wherein on one side of the valve block,
A hydraulic winch with a quick release valve, characterized in that a volume control valve is provided for adjusting the volume ratio of the hydraulic oil passing through the hydraulic winch in a state in which hydraulic oil is supplied to the release port.

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