JPH0956313A - Line-hauling apparatus for long-line fishing boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a line-hauling apparatus for a long-line fishing boat, having a simple structure to facilitate the installation on the boat and the handling of the apparatus, enabling quick and sure hauling work and releasing work of the line with power according to the motion of a fish and capable of safely and efficiently boating a fish without damaging the fish. SOLUTION: This hauling apparatus is provided with an electric motor 1 for generating rotational power, a line-hauling drum 13 connected to and driven by the motor 1 and a clutch mechanism 5 connecting the electric motor 1 with the drum 13. The clutch mechanism 5 is composed of a powder clutch having a drive member 6 connected to the electric motor 1 and a driven member 7 connected to the drum 13, wherein the members 6 and 7 are separated from each other and connected through a magnetic powder 8 to transmit a prescribed transmission torque. The release of the line 14a by the reverse rotation of the drum is allowed when the force caused by the pull of a fish and acting on the driven member 7 in the direction to reversely rotate the drum exceeds the prescribed transmission torque.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope hoisting device which is mounted on a longline fishing boat and used for fishing a large fish such as a tuna, and particularly uses a power for agile hoisting of a rope corresponding to the movement of fish. The present invention relates to a rope hoisting device for a longline fishing boat that can be easily carried out.

[0002]

2. Description of the Related Art Generally, in longline fisheries for catching tuna,
A large number of branch lines are branched from a long trunk line, and when a fish hooks on a hook attached to each branch line, the branch line is wound up by a drum. During this hoisting process, if the rope is hoisted with an excessive force while ignoring movements such as the resistance of the fish, the mouth of the fish may be damaged by the fishing hook and the quality may deteriorate. Subtle adjustments are required, such as stopping the hoisting of the rope, or temporarily loosening it to unwind the rope in the direction of movement of the fish. In this way, when fishing a tuna or the like, it is necessary to gradually wind up the rope while adjusting the looseness according to the movement of the fish.

Conventionally, a skilled worker manually operates the drum rotation in order to swiftly wind a rope in response to such a movement of a fish, but a great deal of labor and experience is required for the work. Was required.

[0004]

In recent years, from the standpoint of labor saving and labor saving, it has been studied to automatically perform hoisting work by mechanization or the like, but it has not been put to practical use.
The reason is that the tuna has a large tensile load of 100 kgf, for example, and it moves violently in water, resulting in a large or complicated device configuration that makes it difficult to install or handle on the hull, or uses rope that uses power. This is because the operation of hoisting and unwinding the fish could not sufficiently follow the movement of the fish and the damage to the fish could not be prevented sufficiently. Therefore, until now, it was the actual situation that the rotation adjustment of the fishing drum had to depend on human power.

The present invention has a simple structure and can be easily installed and handled on a hull, and the operation of hoisting and unwinding a rope using power can be performed reliably and swiftly in response to fish movements. An object of the present invention is to provide a rope hoisting device for a longline fishing boat that can safely and efficiently fish without damaging it.

[0006]

The present invention according to claim 1 is a hoisting device which is mounted on a hull of a longline fishing boat and hoists a rope on which a fish is caught, and an electric motor for generating rotational power. A drum for hoisting a rope, which is connected to the electric motor and driven to rotate, and a clutch mechanism installed between the connecting portions of the electric motor and the drum, the clutch mechanism being connected to the electric motor side. Of the torque converter in which the driven drive member and the driven member connected to the drum side are separated from each other and are connected to each other at a specified transmission torque via a connecting medium, and the drum is inverted according to the pulling of the fish acting on the driven member. When the directional force exceeds the specified transmission torque, the unwinding of the rope by the drum reversal is allowed.

[0007] The present invention described in claim 2 provides the present invention.
In the rope hoisting device for a longline fishing boat, the clutch mechanism uses a magnetic powder as a connecting medium between a drive member and a driven member, and a transmission torque between the two members is set according to an exciting force of the magnetic powder by an electromagnet. As a powder clutch setting means, torque setting means for adjusting the electric power supplied to the electromagnet to set the transmission torque between the two members and setting means for the powder clutch, and both members for supplying or stopping the electric power for excitation. And a switching means for switching between connection and disconnection.

Furthermore, the present invention according to claim 3 is a hoisting device for hoisting a rope on which fish is mounted, which is mounted on a hull of a longline fishing boat, and a hydraulic unit having a hydraulic pump for generating a driving force, An oil motor driven by the hydraulic pressure supplied from the hydraulic pump of the hydraulic unit, a rope hoisting drum connected to the oil motor, and a valve mechanism for switching a hydraulic path between the hydraulic unit and the oil motor. The valve mechanism includes a hoisting setting unit that sets a hydraulic path in a forward rotation direction of the oil motor to perform hoisting of a rope on a drum, and a hydraulic path is set in a reverse rotation direction of the oil motor. Then, the rewind setting section for rewinding the rope from the drum and the pressure rise above the upstream side of the oil motor are detected when the oil motor is rotating forward and the pressure exceeds the specified value. If the oil motor becomes unusable, the upstream and downstream pipes of the oil motor will automatically communicate with each other to form a closed-cycle hydraulic path to allow unwinding of the rope from the drum according to the pulling of the fish. And a part.

In the above-mentioned invention of claim 1, the rotation direction and the rotation speed for hoisting the rope are set in advance in the electric motor before use, and the clutch mechanism has a predetermined connection strength between the drive member and the driven member. That is, the transmission torque corresponding to the fishing load of the fish is set.

When hoisting the rope on which the fish is hooked, the drive member of the clutch mechanism and the driven member are connected to activate the electric motor, and the drum is moved in the hoisting direction under a constant transmission torque. Rotate. This starts the hoisting action of the rope on which the fish is hooked, but during the hoisting, a strong fish pulling force along the anti-hoisting direction of the rope acts, which causes the clutch mechanism to set torque via the drum. When transmitted as the above-mentioned reaction force, both members of the clutch mechanism are in a state of idling, and the drum is rotated in the unwinding direction by the pulling force of the fish to loosen the rope and damage to the fish is prevented.

On the other hand, when the pulling force of the fish weakens and becomes less than the transmission torque set in the clutch mechanism, the connection state force of both members of the clutch mechanism is restored again and the driving force of the electric motor is transmitted through the clutch mechanism. Transmitted to the drum,
The drum rotates in the hoisting direction to hoist the rope. During the repetition of these actions, the fish will not be damaged by excessive force, and will be gradually drawn to the hull side with appropriate force.
Captured efficiently. Therefore, the operation of hoisting and unwinding the rope using the power can be surely performed in a quick response to the movement of the fish, and the fish can be caught safely and efficiently without damaging the fish. However, as described above, the present invention has a simple structure including an electric motor, a drum, a clutch mechanism, and the like, and can be easily installed and handled on a hull.

Further, in the present invention, since the rotational speed of the electric motor or the set torque of the clutch mechanism can be set to various values by the predetermined setting means, it should be set to an appropriate value according to the size of the fish to be caught. You can

In the present invention, when the rope is caught by a foreign matter and needs to be removed from the foreign matter, the switch is turned off to be in a free state and rotated in the opposite direction to wind the rope for a predetermined length. It is possible to deal with it by putting it back.

According to a second aspect of the present invention, the clutch mechanism is a powder clutch as a desirable configuration in the first aspect of the invention. In this case, the transmission torque set in the clutch is easily controlled by the electric power supplied to the electromagnet. In addition, since it can be adjusted over a wide range, it is possible to properly deal with catching fish according to various sizes of fish. Also,
Since the powder clutch is small in size and can transmit a large load by using magnetic powder, it is extremely effective in achieving the compact size required for mounting on ships and still has good operability and an unwinding direction that is suitable for pulling fish. It is possible to smoothly perform the switching operation to, and to perform hoisting of rope and the like very well.

According to the third aspect of the invention, the same hoisting operation as described above can be performed by hydraulically driving. That is, the work of winding the rope with fish on the drum can be performed by setting the oil motor in the normal rotation direction by the winding setting unit of the valve mechanism. When a strong fish pulling force along the anti-winding direction of the rope is applied during the hoisting, the hoisting rotation of the drum, that is, the rotation speed of the oil motor in the forward rotation direction is reduced or stopped. In this case, the oil pressure supplied to the oil motor, that is, the pressure on the upstream side of the oil motor increases.

At this time, a pressure increase is detected in the unwinding permission setting portion of the valve mechanism, and the upstream side pipe and the downstream side pipe of the oil motor communicate with each other, and the hydraulic path in the closed cycle state,
That is, the hydraulic path in the neutral state is formed. As a result, the oil motor is allowed to rotate in both forward and reverse directions, so when the fish has a large pulling force, the drum rotates in the unwinding direction of the rope, loosening the rope and preventing damage to the fish. It On the other hand, if the pulling force of the fish weakens, the communication between the upstream and downstream piping of the oil motor is released, and if the oil motor is normally rotated again, the drum will rotate in the hoisting direction and wind the rope. Fried. By repeating such actions, the fish is not damaged by excessive force, but is gradually attracted to the hull side with appropriate force and is efficiently caught.

Therefore, also in the present invention, the operation of hoisting and unwinding the rope using the power is surely performed in a manner corresponding to the action of the fish, and the fish can be caught safely and efficiently without damaging the fish. . As mentioned above,
INDUSTRIAL APPLICABILITY The present invention has a simple structure including a hydraulic circuit, and can be easily installed and handled on a hull.

Further, when the oil motor is set in the reverse rotation direction by the rewind setting section of the valve mechanism, the rope is positively rewound by reversing the drum, for example, when a long rope is installed or when the rope becomes foreign matter. It is possible to perform an operation in the case where it is necessary to disengage from a foreign object due to being caught.

In the present invention, since the rotation speed or set torque of the oil motor can be adjusted to various values by the oil pump, the appropriate fishing speed and torque can be set according to the size of the fish to be caught. .

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a rope hoisting device according to the present invention will be described below with reference to the drawings.

First Embodiment (FIGS. 1 to 5) The rope hoisting device of this embodiment is an electric one according to the invention of claim 1, and FIG. 1 shows a schematic system configuration. 3 and 4 show a detailed configuration as a front view, a plan view and a side view in a partial cross section, and FIG. 5 shows a configuration of an operation panel for operating the apparatus.

As shown in FIG. 1, the rope hoisting device comprises an electric motor 1 fixedly installed on the hull (not shown) of a longline fishing boat. This electric motor 1 has a structure capable of continuously variable shifting by inverter control. Has been done. This electric motor 1
Is configured as a geared motor in which a gear device 2 which is a reduction mechanism is directly connected, and an output shaft 3 of the motor 1 is provided with a first pulley 4 for power transmission. Although a sprocket can also be applied as the power transmission device, all the pulleys will be described in FIG.

In the rope hoisting device shown in FIG. 1, the output shaft 3 and the shaft center are arranged in parallel with each other, and the clutch mechanism 5 is provided at a fixed distance. The clutch mechanism 5 is a powder clutch that is one of torque converter types in which a drive member and a driven member are connected with a prescribed transmission torque via a connecting medium.

That is, the clutch mechanism 5 has a drive member 6 and a driven member 7 which are a pair of rotating bodies and are coaxially spaced apart from each other with a constant space, and a space between the members 6 and 7. Magnetic powder 8 is dispersed and inserted as a connecting medium. Then, a predetermined exciting force is applied to the magnetic powder by the electromagnet 9 so that the connection strength between both members 6, 7 can be set, that is, the transmission torque can be set.
That is, when the electromagnet 9 is energized and the magnetic powder 8 is excited, the magnetic powder 8 gathers and becomes a fixed state, whereby the drive member 6 and the driven member 7 are caused.
Both rotating bodies constituting the above are connected to rotate integrally. In this case, the larger the electric power supplied to the electromagnet 9, the larger the transmission torque can be set, and the smaller the supplied electric power, the smaller the transmission torque is set. Further, when the energization of the electromagnet 9 is released and the magnetic powder 8 is de-excited, the magnetic powders 8 are in a discrete state and the coupling to the both rotating bodies forming the drive member 6 and the driven member 7 is released. He
When the clutch is disengaged, both rotors are free to rotate relative to each other.

A second pulley 10 is provided on the drive member 6 side of the clutch mechanism 5, and between the second pulley 10 and the first pulley 4 provided on the output shaft 3 of the electric motor 1 described above. The first transmission belt 11 is wound around. Then, the rotational driving force of the electric motor 1 is reduced by the gear device 2 and transmitted from the first pulley 4 to the second pulley 10 via the first transmission belt 11, and the drive member 6 of the clutch mechanism 5 is rotationally driven. It has become so.

On the other hand, the driven member 7 of the clutch mechanism 5
A driven shaft 12 is connected to the driven shaft 12, and a rope hoisting drum 13 is integrally rotatable with the driven shaft 12.

As a result, when both members 6 and 7 of the clutch mechanism 5 are in the connected state, the driving force of the electric motor 1 is transmitted to the drum 13 via the driven shaft 12 of the clutch mechanism 5.
Is designed to rotate. The branch line 14a of the long line 14 is wound around the drum 13, and the branch line 14a on which the fish 15 is hooked can be wound up by the rotating drum 13.

Next, the specific device configuration shown in FIG. 2 will be described. In the rope hoisting device shown in FIG. 2, the electric motor 1, the gear device 2, the clutch mechanism 5, and the drum 13 are used.
Are provided on the same base 16. The output shaft 3 projects in a direction orthogonal to the shaft center of the electric motor 1, and the drive member 6 of the clutch mechanism 5 is directly connected to the output shaft 3 via a second pulley 10.

A driven member 7 is arranged inside the drive member 6, and a driven shaft 12 is connected to the driven member 7. The driven shaft 12 is connected to the drum shaft 12a, and the base 18 is connected by bearings 18 and 19.
6 is supported. A pulley directly connected to the driven shaft 12 rotates the drum 13 via the chain 11.

Next, referring to FIGS. 1 and 3, the electric motor 1
A setting means for setting the operation of the clutch mechanism 5 and a method of operating the rope hoisting device of this embodiment by the setting means will be described. The setting means may be configured as an operation panel for desktop installation, but in the present embodiment, the setting means shown in FIG.
As shown in FIG. 5, the operation boxes 21 and 22 are used by being mounted on a wall surface or a pillar surface.

The operation boxes 21 and 22 are the electric motor 1
Also, it is electrically connected to the clutch mechanism 5 via wires 21a, 21b, 22a, and is configured by housing electric circuit parts (not shown) in the operation boxes 21, 22, and an operation setting unit is provided on the surface of the operation box 21. It has 23 and 24.

The operation box 21 adjusts the rotation speed of the electric motor 1 to set the hoisting speed of the drum 13, and the electric power supplied to the electromagnet 9 of the clutch mechanism 5 to adjust the power supplied to both members 6. , 7 and a torque setting unit 23 as a torque setting means for setting a transmission torque. Each of these setting sections 24 and 23 has a rotary volume structure, and has display sections 27 and 28 for setting, respectively.

The operation box 22 has a push button switch 2 for turning on the electric power of the electric motor 1 and the clutch mechanism 5.
5 and 26. The push button switches 25 and 26 constitute switching means for supplying excitation power to the electromagnet 9 of the clutch mechanism 5 to connect the two members 6 and 7. That is, the operation box 22 drives the electric motor 1 in the normal rotation direction to rotate the drum 13 in the winding direction, the winding switch 26, the electric motor 1 and the clutch mechanism 5.
And a stop switch 25 for turning off the power source. The stop switch 25 constitutes switching means for stopping the electric power for exciting the electromagnet 9 of the clutch mechanism 5 to disconnect the two members 6, 7.

When the fishing line is lifted by using the rope-winding device according to the present embodiment with the above operation boxes 21 and 22, the operation is performed in the following procedure.

The speed setting unit 24 is rotated according to the display unit 27 to set the rotation speed of the electric motor 1, and the torque setting unit 23 is also rotated according to the display unit 28 so that the clutch mechanism 5 is operated. A predetermined coupling strength between the drive member 6 and the driven member 7, that is, a transmission torque corresponding to the fishing load of the fish is set.

When the rope on which the fish is hooked up is to be hoisted, the push button switch 26 is turned on, and the clutch mechanism 5 is turned on.
Excitation power is supplied to the electromagnet 9 to bring the drive member 6 and the driven member 7 into a connected state. At the same time, the electric motor 1 is activated, and the drum 13 rotates in the rope hoisting direction under a constant transmission torque, whereby the hoisting action by the drum 13 of the branch rope 14a on which the fish 15 is caught is started. It During this winding, a strong pulling force of the fish 15 along the anti-winding direction of the branch rope 14a acts, and the reaction force is greater than the torque set by the torque setting unit 23 to the clutch mechanism 5 via the drum 13. Is transmitted, the two members 6 and 7 of the clutch mechanism 5 are idling with respect to each other. Therefore, the drum 13 is rotated in the unwinding direction by the pulling force of the fish 15, and the branch rope 14a is loosened, so that the mouth of the operating fish 15 is prevented from being damaged by the excessive pulling force.

On the other hand, when the pulling force of the fish 15 becomes weak and becomes less than the transmission torque set in the clutch mechanism 5,
The connected state force of both members 6 and 7 of the clutch mechanism 5 is restored again, and the driving force of the electric motor 1 is transmitted to the drum 13 via the clutch mechanism 5. As a result, the drum 13 rotates in the winding direction again to wind the branch rope 14a.

During the repetition of such actions, the fish 15
Will not be damaged by excessive force, and will be gradually attracted to the hull side with proper force and efficiently captured.

Therefore, according to the present embodiment, the operation of hoisting and unwinding the branch line 14a using the power is surely performed in a manner that responds swiftly to the movement of the fish 15, and the fish 15 can be safely protected without being damaged. And you can catch it efficiently.
However, as described above, the present embodiment has a simple configuration including the electric motor 1, the drum 13, the clutch mechanism 5, and the like, and can be easily installed and handled on the hull.

Further, in the rope hoisting device of the present embodiment, since the rotational speed of the electric motor 1 or the set torque of the clutch mechanism 5 can be set to various values by the speed setting unit 24 and the torque setting unit 23, fishing is performed. Power fish 15
It can be set to an appropriate value according to the size of.

When the branch rope 14a is caught by a foreign matter and needs to be released from the foreign matter, the push button switch 25 is operated to create a torque-free state.
This can be dealt with by rewinding 4a by a predetermined length.

In particular, in this embodiment, since the clutch mechanism 5 is a powder clutch, the set transmission torque can be easily adjusted in a wide range by the electric power supplied to the electromagnet 9, and various kinds of fish 15 can be adjusted. It can cope well with fishing according to the size. Further, the powder clutch is small in size and capable of transmitting a large load by using the magnetic powder 8. Therefore, the powder clutch is extremely effective for the compact size required for mounting on a ship, and the operability is good.
The switching action in the unwinding direction corresponding to the pulling of No. 5 can be smoothly performed, and the branch rope 14a can be unwound very well.

Second Embodiment (FIGS. 4 and 5) The rope hoisting device of the present embodiment is a hydraulic system according to the invention of claim 3, and FIG. 4 shows the configuration of a hydraulic system.
The method of use is shown in the flowchart.

As shown in FIG. 4, the rope hoisting device of this embodiment is provided with a hydraulic unit 51 having a hydraulic pump 50 for generating a driving force. A hydraulic pressure supply pipe 52 and a hydraulic pressure return pipe 53 are connected to the hydraulic unit 51, an oil motor 54 is provided at the tip ends of both pipes 52, 53, and the oil motor 54 is rotationally driven by the hydraulic pressure supplied from the hydraulic pump 50. It is supposed to be done. A drum 55 for hoisting a rope is connected to the oil motor 54.

In the hydraulic pressure supply pipe 52 and the hydraulic pressure return pipe 53 between the hydraulic unit 51 and the oil motor 54, a cam operation switching valve 56, which serves as a valve mechanism for switching the hydraulic path,
A manual operation switching valve 57, a pilot operation switching valve 58 and a relief valve 59 are provided.

The cam operation switching valve 56 has a first position A that normally forms a circulation path and a second position that connects a first bypass pipe 60 for releasing pressure from the upstream of the oil motor 54 to the hydraulic pressure supply pipe 52. It is configured to be able to switch to B. This switching operation can be performed manually by operating the cam rod.

The manual operation switching valve 57 includes a first position I that normally forms a circulation path, a second position II that makes the circulation path neutral, and a hydraulic pressure supply pipe 52 that is ahead of the manual operation switching valve 57. The connection with the hydraulic pressure return pipe 53 can be switched to the third position III for switching in the opposite direction. This switching operation can be performed manually by operating the handle.

The pilot operation switching valve 58 includes a first position a which normally constitutes a circulation path and an oil motor 54.
It is configured such that the upstream side pipe and the downstream side pipe can be connected to each other to switch to the second position b which forms the hydraulic path in the closed cycle state. The switching operation from the position a to the position b is performed by the oil pressure supply pipe 52 on the upstream side of the oil motor 54 when the oil motor 54 rotates forward.
It is automatically performed when the pressure rise is detected and the pressure exceeds the specified value. That is, the first bypass pipe 60 is branched to the hydraulic pressure supply pipe 52 on the upstream side of the oil motor 54, and the check valve 61 is connected to the first bypass pipe 60.
Is provided, and the pressure is applied from the downstream side of the check valve 61 to switch from position a to position b. The switching operation from the position b to the position a can be manually performed.

The relief valve 59 is provided in the second bypass pipe 62 branched from the hydraulic pressure supply pipe 52 on the upstream side of the oil motor 54, and the relief valve 59 is set from the position a of the pilot operation switching valve 58 depending on the set value of the relief valve 59. The switching operation to the position b is performed.

Various hydraulic paths are formed by the above valve mechanisms. That is, when the cam operation switching valve 56 is in position A, the manual operation switching valve 57 is in position I, and the pilot operation switching valve 58 is in position a,
The hydraulic path is set in the forward rotation direction of the oil motor 54,
The branch rope 14a is wound around the drum 55, and a winding setting unit is configured by this.

When the manual operation switching valve 57 is set to position III in the above state, the hydraulic path is set in the reverse rotation direction of the oil motor 54, and the branch line 14a is unwound from the drum 55. The rewind setting unit is configured by this.

Further, when the pilot operation switching valve 58 is in the position b, the hydraulic pressure supply pipe 52 on the upstream side of the oil motor 54 and the hydraulic pressure return pipe 53 on the downstream side are in communication with each other to form a closed cycle hydraulic path. Then, the unwinding of the branch rope 14a from the drum 55 according to the pulling of the fish 15 is permitted, and the unwinding permission setting unit is constituted by this.

Next, a method of using the rope hoisting device of the second embodiment will be described with reference to FIG.

The procedure on the left side of FIG. 5 shows a case where the rope hoisting operation is performed manually. In this case, first, it is judged whether or not it is manual (step 101), and YE
If it is S, the cam operation switching valve 56 is first set to the position A (step 102). Since the manual operation switching valve 57 is initially set to the position II in which the circulation path is neutral, the oil motor 54 is stopped in this state (step 103). Therefore, it is determined whether or not the hoisting should be performed (step 104), and if YES, the manual operation switching valve 57 is switched to the position I (step 105).

Since the normal circulation path is constituted by this, the hydraulic path is set in the forward rotation direction of the oil motor 54, the branch rope 14a is wound around the drum 55, and the final fishing is performed (step 106). Thereafter, the manual operation switching valve 57 is switched to the neutral position II (step 10
7) Finish the hoisting operation. Incidentally, in step 104, if the judgment of hoisting is NO, it is judged whether or not rewinding (step 108), and if YES, the manual operation switching valve 57 is switched to position III ( (Step 109), the hydraulic path is set in the reverse rotation direction of the oil motor 54. After continuing this, the final fishing is completed (step 106). Judgment as to whether or not rewinding (step 10
If 8) is NO, the determination of whether or not it is rolled up (step 104) is repeated.

On the other hand, the procedure on the right side of FIG. 5 shows a case where the rope winding operation is performed by an automatic operation. In this case, if the previous determination as to whether it is manual (step 101) is NO, or if it is rewinding (step 108)
If NO is determined in step 110, it is started (step 201).

First, the position B where the cam operation switching valve 56 connects the first bypass pipe 60 for releasing pressure from the upstream of the oil motor 54 to the hydraulic pressure supply pipe 52 is selected (step 202). In this case, the manual operation switching valve 57 is initially set to the position II where the circulation path is neutral (step 203), but from this state, the manual operation switching valve 57 is switched to the position I (step 20).
4). As a result, a normal circulation path is formed, the hydraulic path is set in the forward rotation direction of the oil motor 54, and the drum 5
The branch rope 14a is unwound to the 5th position.

Here, it is judged whether or not the pull of the fish (eg, tuna) is large or small (step 205).
When the pulling is large, a large resistance is generated in the oil motor 54, so that the pressure in the hydraulic pressure supply pipe 52 on the upstream side of the oil motor 54 increases. When this pressure exceeds a specified value, the relief valve 59 opens, and at the same time, the pilot operation switching valve 58 switches from position a to position b, and the hydraulic pressure supply pipe 52 on the upstream side of the oil motor 54 and the hydraulic pressure return on the downstream side. The pipe 53 communicates with each other to form a closed cycle hydraulic path. As a result, the oil motor 54 automatically becomes free (step 2
06), the drum 55 of the branch rope 14a according to the pulling of the fish 15
Unwinding from is allowed.

When it is determined in step 205 that the amount of fish drawn is small, it is not necessary to immediately set the oil motor free state. Therefore, it is visually determined whether the torque is forcibly made free (step 207). If NO (determination not necessary), the process returns to the previous step 205 and Y
If ES (necessary), the cam operation switching valve 56 is once switched to the position B and the manual switching valve is set to the state of II (step 208), and the hydraulic pressure supply pipe 52 on the upstream side of the oil motor 54 is manually forced. The pressure is increased so that the state of step 206 leads to the oil motor free state (step 206).

After the oil motor becomes free in step 206, it is visually confirmed whether or not the pulling of the fish is weakened,
It is judged whether to return to the rolled state (step 20).
9) If NO (pulling is still strong), the process returns to the previous step 205 and YES (pulling is weakened)
If it is determined that the torque-free state is released (step 210), the cam operation switching valve 56 is switched to the position A and the manual switching valve 57 is switched to the position I (step 211). Return to step (110) for manual or automatic hoisting.

As described above, in this embodiment, the pressure increase is detected in the unwinding allowance setting portion of the valve mechanism, the upstream side pipe 52 and the downstream side pipe 53 of the oil motor 54 communicate with each other, and the hydraulic pressure in the closed cycle state is increased. Since the path, that is, the hydraulic path in the neutral state is formed, the oil motor 54 is allowed to rotate in both forward and reverse directions, and when the pulling force of the fish 15 is large, the drum 55 moves in the unwinding direction of the branch line 14a. It rotates to loosen the rope and prevent fish damage.

On the other hand, when the pulling force of the fish 15 is weakened, the upstream pipe 52 and the downstream pipe 5 of the oil motor 54 are
By disconnecting the communication with 3, and rotating the oil motor 54 forward again again, the drum 55 rotates in the winding direction to wind the rope. During the repetition of such actions, the fish 15 is not damaged by an excessive force, but is gradually attracted to the hull side with an appropriate force and is efficiently caught.

Therefore, also in the present embodiment, the operation of hoisting and unwinding the branch rope 14a using power is surely performed in a manner corresponding to the movement of the fish 15, and the fish 15 can be safely and safely without being damaged. You can fish efficiently.
However, as described above, the present invention has a simple structure including a hydraulic circuit, and can be easily installed and handled on the hull. In addition, the rewind setting unit of the valve mechanism controls the oil motor 54.
Is set in the reverse rotation direction, the branch line 14a is positively rewound by reversing the drum 55, and the branch line 14a is rewound.
Can be installed or when the branch rope 14a is caught by a foreign substance and needs to be removed from the foreign substance.

In the present embodiment, since the rotation speed or the set torque of the oil motor 54 can be adjusted to various values by the oil pump 50, the fish 1 to be caught is
An appropriate fishing speed and torque can be set according to the magnitude of 5.

[0065]

As described above, according to the present invention, installation and handling on a hull can be easily performed with a simple structure, and the operation of hoisting and unwinding rope using power can be carried out swiftly on the movement of fish. Correspondingly and surely, it is possible to fish safely and efficiently without damaging the fish.

[Brief description of drawings]

FIG. 1 is a schematic system configuration diagram showing a rope hoisting device according to a first embodiment of the present invention.

FIG. 2 is a front view showing the rope hoisting device of the embodiment in a partial cross section.

FIG. 3 is a perspective view showing a configuration of an operation panel in the rope hoisting device of the embodiment.

FIG. 4 is a piping system diagram showing a rope hoisting device according to a second embodiment of the present invention.

FIG. 5 is a flowchart for explaining the operation of the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric motor 2 Gear device 3 Output shaft 4 1st pulley 5 Clutch mechanism 6 Drive member 7 Driven member 8 Magnetic powder 9 Electromagnet 10 2nd pulley 11 1st transmission chain 12 Driven shaft 12a Drum shaft 13 Drum for hoisting 14 Long line 14a Branch line 15 Fish 16 Base 18, 19 Bearing member 21, 22 Operation box 21a, 21b, 22a Wiring 23 Torque setting part 24 Speed setting part 25 Lifting switch 26 Stop switch 27, 28 Display part 50 Hydraulic pump 51 Hydraulic pressure Unit 52 Hydraulic supply piping 53 Hydraulic return piping 54 Oil motor 55 Drum 56 Cam operation switching valve 57 Manual operation switching valve 58 Pilot operation switching valve 59 Relief valve 60 First bypass piping 61 Check valve 62 Second bypass piping

Claims (3)

[Claims] 1. A hoisting device, which is mounted on a hull of a longline fishing boat and hoists a rope on which fish is caught, wherein an electric motor for generating rotational power and a rope winder that is rotationally driven by being connected to the electric motor. A lifting drum and a clutch mechanism installed between the electric motor and the connecting portion of the drum, wherein the clutch mechanism is a drive member connected to the electric motor side and a driven member connected to the drum side. Is separated from each other by a specified transmission torque via a connecting medium, and when the force acting on the driven member in the drum reversing direction according to the pulling of the fish exceeds the specified transmission torque. A rope unwinding device for a longline fishing boat, which is configured to allow unwinding of the rope by reversing the drum. 2. The rope hoisting device for a longline fishing boat according to claim 1, wherein the clutch mechanism uses magnetic powder as a connecting medium between the drive member and the driven member, and the electromagnetic force is applied to the magnetic powder by an electromagnet. A powder clutch in which a transmission torque between both members is set. As a setting means of the powder clutch, a torque setting means for adjusting a power supply to the electromagnet to set a transmission torque between both members, and an exciting power. A rope hoisting device for a longline fishing boat, which is provided with switching means for switching between connecting and disconnecting both members by supplying or stopping. 3. A hoisting device, which is mounted on a hull of a longline fishing boat and hoists a rope on which fish is caught, and a hydraulic unit having a hydraulic pump for generating a driving force, and a hydraulic pump of the hydraulic unit. An oil motor driven by an oil pressure, a drum for hoisting a rope connected to the oil motor, and a valve mechanism for switching a hydraulic path between the hydraulic unit and the oil motor. A winding setting section that sets the hydraulic path in the normal rotation direction of the oil motor to wind the rope around the drum, and a hydraulic path is set in the reverse rotation direction of the oil motor to rewind the rope from the drum. The rewind setting section to be performed and the oil motor automatically detects when the pressure rises on the upstream side of the oil motor at the time of normal rotation of the oil motor and the pressure exceeds the specified value. The upstream and downstream pipes of the rotor are connected to each other to form a hydraulic path in a closed cycle state, and the unwinding allowance setting unit that allows unwinding of the rope from the drum according to the pulling of the fish is configured. A hoisting device for longline fishing boats, which is characterized in that