JP4418351B2 - Electric propulsion device for tuna longline fishing boat - Google Patents

Description

  The present invention relates to an electric propulsion device for a tuna longline fishing boat used for a tuna longline fishing boat that captures tuna by the tuna longline fishing method, and more specifically, for measures to enable quick transition to tide after finishing a longline. Involved.

Conventionally, as an electric propulsion device used for ships, electricity generated by a plurality of generators is supplied according to a load such as an electric motor or an inboard device, and the propulsion device (propeller) is driven by an electric motor that is rotated by the supplied electric power. And a gear box or the like are known (see, for example, Patent Document 1). In this case, the multiple generators operate only the required number so that the required power is supplied according to the load of the electric motor or inboard device, while the unnecessary generators are stopped and this state is maintained. When a power shortage occurs, a generator that has been stopped is additionally started to control to compensate for the power shortage.
Japanese Patent Laid-Open No. 2004-17805

  By the way, in a tuna longline fishing boat that captures tuna by the tuna longline fishing method in the ocean, it is possible to shift to the tide after completing the hoping after laying and drifting, and the ship speed is high In addition, it is possible to switch to a low speed at the time of lifting, and to a high speed at the time of rising tide.

  In that case, there is a demand for applying the electric propulsion device to such a tuna longline fishing boat.

  However, if an electric propulsion device is applied to a tuna longline fishing boat, it will not be possible to deny power shortage to increase the boat speed at the time of throwing and rising the tide. Therefore, it is necessary to perform control so as to compensate for the power shortage by additionally starting the generator that has been stopped. At this time, since the generator that was in the stopped state at the time of the hoisting is controlled to be additionally started after shifting to the tide and causing power shortage, power supply is started by the generator that has been additionally started later. It takes a long time to complete, and it is not possible to move quickly to the tide after finishing the rope.

  This invention is made in view of this point, The place made into the objective provides the electric propulsion apparatus for tuna longline fishing boats which can perform the transition to a tide rise quickly after finishing a lifting line. There is.

  To achieve the above object, in the present invention, as a tuna longline fishing boat electric propulsion device, tuna longline fishing that catches tuna by tuna longline fishing method, which is then shifted to the tide after the end of the hoping after being anchored and anchored The fishing boat is provided with an electric propulsion device that drives the propulsion device with an electric motor that is rotated by electricity generated by a plurality of generators. Then, at least one of the plurality of generators is controlled so as to be stopped at the time of the hoisting, while at the end of the hoisting, the end signal is received so as to be additionally started from the stopped state. is doing.

  At least one generator among a plurality of generators is controlled so as to be stopped at the time of the hoisting, and according to this specific matter, the end signal is received at the end of the hoisting so as to be additionally started from the stopped state. As a result, at least one generator that was stopped by the end signal at the end of the lifting line is additionally started, and there is a shortage of power necessary to increase the boat speed when shifting to tide. Will be resolved. For this reason, it does not take time to start replenishment with a generator that has been additionally started later, as compared with the case of additionally starting a stopped generator after a shortage of power due to the transition to tide rise. It is possible to quickly shift to the tide after finishing the hoisting.

  In particular, the following configuration is listed as one that makes the end of the hoofing clearer.

  In other words, at least one generator that has been in a stopped state at the time of lifting is controlled so as to be additionally started in response to a stop signal from a line hauler that stops operation at the end of the lifting.

  Because of this specific matter, it is controlled to additionally start at least one generator that was in a stopped state by a stop signal from the line holer that stops operation at the end of the lifting line. It will be understood and it will be possible to make the transition to tide more quickly after finishing the hoping.

  In short, it is necessary to increase the boat speed when shifting to tide by controlling to start at least one generator in the stopped state in response to the end signal at the end of the lifting line It is possible to eliminate a shortage of electric power, shorten the start time of power supply by a generator that has been additionally started later, and to quickly shift to rising after finishing the hoping.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows a tuna longline fishing boat equipped with an electric propulsion device for a tuna longline fishing boat, and this tuna longline fishing boat S is provided with a fish hold (not shown) for storing loads such as harvested fish. This fishhouse is equipped with a freezer (not shown), and harvested fish are stored frozen. In addition, an electric motor room (not shown) partitioned from the fishhouse is provided at the rear of the tuna longline fishing boat S. Above this electric motor room, an engine room (not shown) is similarly partitioned from the fishhouse.

  As shown in FIG. 2, an electric propulsion device 20 is provided in the electric motor room. The electric propulsion device 20 includes first and second propulsion motors 23 and 24 as electric motors that drive propellers 21 and 22 as propulsion devices. The electric motor room is provided with a rudder angle changing device 26 for changing the rudder angle of the rudder. In this case, the propulsion motors 23 and 24 and the rudder angle changing device 26 are driven (rotated) by electricity supplied by the switchboard 4.

  The engine room is provided with first and second engine units 31 and 32. Each engine unit 31, 32 includes a diesel engine 34 and a generator 35 driven by the diesel engine 34. The generators 35 of the engine units 31 and 32 are provided side by side with rotating shafts (not shown) arranged in parallel with each other. The electricity generated by the generator 35 of each of the engine units 31 and 32 is supplied to the propulsion motors 23 and 24 and the rudder angle changing device 26 by the switchboard 4, the drive motor 36 a of the refrigerator 36, the electrical equipment 37, and the like. Electric power is supplied to the inboard load 38. In this case, power is supplied to the inboard loads 38 such as the propulsion motors 23 and 24, the steering angle changing device 26, the drive motor 36 a of the refrigerator 36, and the electric equipment 37, by the control means 41 of the switchboard 4.

  Here, the daily operation pattern in the tuna longline fishing method performed by the tuna longline fishing boat S will be described.

  First, the trunk line 51 is dropped over about five and a half hours from the stern of the tuna longline fishing boat S. At this time, the tuna longline fishing boat S travels at a high speed of about 11 knots, and all the generators 35 are driven by the diesel engines 34 of the first and second engine units 31 and 32.

  Next, it shifts to a drifting that takes place about 3 and a half hours after the completion of the rope. At this time, the tuna longline fishing boat S is stopped, and the first of the first and second engine units 31 and 32 is used to secure only the electric power necessary for the inboard load 38 such as the refrigerator 36 and the electric equipment 37. Only a single generator 35 is driven by the diesel engine 34 of the one engine unit 31.

  After that, as shown in FIG. 3, it takes about 13 hours from the end of the berthing, and the operator operates the line holer 52 to shift to the hoisting line for lifting the trunk line 51. At this time, the tuna longline fishing boat S travels at a low speed of about 5 knots, and in addition to the inboard load 38 such as the refrigerator 36 and the electric equipment 37, in order to secure the power necessary for the low speed navigation of about 5 knots, One generator 35 is continuously driven by the diesel engine 34 of the first engine unit 31 of the first and second engine units 31 and 32. In this case, the second engine unit 32 (diesel engine 34 and generator 35) is in a stopped state.

  Then, after the worker stops the line hauler 52 and finishes the hoping, the tide rises toward the next fishing ground in about 2 hours. At this time, the tuna longline fishing boat S travels at a high speed of about 11 knots, and in addition to the inboard load 38 such as the refrigerator 36 and the electric equipment 37, in order to secure the power necessary for the high-speed navigation of about 11 knots, In addition to the generator 35 of the first engine unit 31, the diesel engine 34 of the second engine unit 32, which was in a stopped state at the time of lifting, is driven to additionally start the generator 35. In this case, a signal due to the operation or stop of the line hauler 52 is input to the control means 41 by an ON operation or OFF operation of the switch 52a by an operator.

  Then, when we arrive at the next fishing ground, as described above, we will repeat the operation pattern in which we shift to the tide after we have finished the lifting line after we anchored and drifted.

  Next, in the operation pattern of the tuna longline fishing method, the flow of control of the generator 35 of the first and second engine units 31 and 32 by the control means 41 when shifting from rising to rising is shown in the flowchart of FIG. This will be described with reference to the drawings. In this case, it is assumed that the tuna longline fishing boat S is in a state in which the tuna longline fishing boat S is anchored and drifted and then shifted to a lifting rope, and only one generator 35 is driven by the diesel engine 34 of the first engine unit 31. .

  First, in step ST1 of the flowchart of FIG. 4, the hoisting line for lifting the trunk line 51 is performed by the line hauler 52, and in step ST2, whether or not the hoisting line is finished is determined by a stop signal of the line holer 52, that is, the switch 52a. This is determined by the input of the OFF operation signal, and waits until the OFF operation signal of the switch 52a of the line hauler 52 is input.

  Then, when an OFF operation signal for the switch 52a of the line hauler 52 is input, in step ST3, a signal for driving the diesel engine 34 to the diesel engine 34 of the second engine unit 32 that is in a stopped state at the time of the hoisting is sent. Output. Thereafter, in step ST4, the generator 35 is additionally started by driving the diesel engine 34 of the second engine unit 32. In step ST5, the generator 35 of the second engine unit 32 is connected to the generator 35 of the first engine unit 31. In parallel operation, in addition to the inboard load 38 such as the refrigerator 36 and the electrical equipment 37 by the two generators 35, 35, in addition to securing the power necessary for high-speed navigation of about 11 knots at the rising tide in advance In step ST6, the tide rises.

  As described above, the generator 35 of the second engine unit 31 among the generators 35 and 35 of the first and second engine units 31 and 32 is controlled so as to be stopped when the line is lifted, and when the line is finished. In response to the OFF operation signal of the switch 52a of the line hauler 52, the control is performed so as to additionally start from the stopped state. When the generator 35 of the engine unit 32 is additionally started and shifted to a tide rise, the power shortage necessary to increase the ship speed to 11 knots is eliminated. Therefore, the generator 35 of the second engine unit 32 that is additionally started later is compared with the case of additionally starting the generator of the second engine unit that is in a stopped state after the shortage of power due to the rising of the tide. No time is required until the start of power supply, and it is possible to quickly shift to rising after finishing the hoisting.

  Moreover, by controlling the generator 35 of the second engine unit 32 in the stopped state to be additionally started by an OFF operation signal from the line holer 52 that stops operation when the rope is finished, the end of the rope is finished. The timing is clearly grasped, and it is very advantageous to make the transition to the tide faster after finishing the hoping.

  In addition, this invention is not limited to the said embodiment, The other various modifications are included. For example, in the above embodiment, the generator of the second engine unit of the generators 35 of the two engine units 31 and 32 is additionally started in response to a stop signal from the line holer 52 at the end of the hoisting. At least one generator among the generators of three or more engine units may be additionally started upon receipt of the end signal at the end of the lifting line, and the number of generators in the engine unit is particularly limited Is not to be done.

  In the above embodiment, the rudder angle changing device 26 that changes the rudder angle of the rudder is provided in the electric motor room. However, the first and second propulsion motors are configured to be rotatable around the vertical axis, and the first and second (2) The course of the ship may be changed by rotating the propulsion motor. In that case, the rudder and the rudder angle changing device can be eliminated to increase the degree of freedom in design.

It is the perspective view which looked at the tuna longline fishing boat provided with the electric propulsion device for tuna longline fishing boat concerning the embodiment of the present invention from the side. It is a block diagram which shows the electric power feeding path | route. It is a perspective view which shows the hoofing process on the deck of a tuna longline fishing boat. It is a flowchart figure which shows the flow of control of the generator of the 1st and 2nd engine unit by the control means at the time of shifting to a tide rise from a lifting line.

Explanation of symbols

20 Electric propulsion device 21 First propeller (propulsion device)
22 Second propeller (propulsion device)
23 First propulsion motor (motor)
24 Second propulsion motor (motor)
35 Generator 52 Line Hora S Tuna Longline Fishing Boat

Claims (2)

A tuna longline fishing boat that captures tuna by the tuna longline fishing method that shifts to the tide after the long line has been lifted after drifting and drifting, is equipped with a propulsion device with an electric motor that rotates with electricity generated by multiple generators An electric propulsion device to drive,
At least one of the plurality of generators is controlled to be in a stopped state at the time of hoisting, while being controlled to receive an end signal at the end of the hoisting and to additionally start from the stopped state. An electric propulsion device for a tuna longline fishing boat. In the tuna longline fishing boat electric propulsion device according to claim 1,
For tuna longline fishing boats, where at least one generator that was in the stopped state at the time of the hopping is controlled to be additionally started in response to a stop signal from the line hauler that stops at the end of the hopping Electric propulsion device.

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