JP3326055B2 - Path control devices for seaweed aquaculture work boats, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a course control device applied to a laver farming work boat for collecting laver grown on a laver net at sea.

[0002]

2. Description of the Related Art Conventionally, as this type of laver cultivation work boat, a laver net guide is mounted on the upper part of the hull, and the front end of this guide is projected forward from the bow and the front end is submerged below the sea surface. It is known that the seaweed net is guided on a ship by advancing toward the seaweed net in a state, and the seaweed is continuously collected on the ship. That is, the laver cultivation work boat is provided with a laver net guide on its hull, and the guide extends to the stern side just above the laver cutting device at the front of the hull and above the bridge. An acid treatment tank is provided along the net guide. Then, by moving the ship forward, the seaweed net is scooped up and moved in the stern direction along the seaweed net guide, while the seaweed adhering to the seaweed net is cut by the seaweed cutting device, and then passed through the acid treatment tank. In this way, the laver net is immersed in a chemical solution for acid treatment to perform acid treatment.

[0003]

In the above-mentioned work boat, it is necessary to accurately adjust the course of the ship along the laver net attached to the sea, and this must be performed together with other operations such as cutting of the laver. In addition, in laver farms, driving such as turning a ship within a narrow range is required. Conventionally, many such operations are performed with separate operation handles, which is very troublesome for the driver.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional drawback, and a laver cultivation work in which various course adjustment operations can be easily performed with a single operation handle. A route control device for a ship or the like is provided.

[0005]

According to the present invention, a bow thruster for generating propulsion only in the width direction of the ship and a stern thruster for generating propulsion in the width and width directions of the ship are installed on the bottom of the ship. In a ship provided with a thruster operation handle that is swung in the front-rear direction and the left-right direction around the base, the stern thruster is provided within a range of a propeller left pointing position, a rear pointing position, and a right pointing position. In the neutral position of the operation handle, the stern thruster is in the rearward-pointing position, and the propellers of the bow thruster and the stern thruster are stopped at the neutral position, and the operation handle is forward or rearward. By the swinging operation in the direction, the stern thruster generates forward or backward propulsion, and the ship is moved forward or backward,
Simultaneously generating a rightward or leftward thrust and a forward thrust on the stern thruster by a leftward or rightward swinging operation with the above-mentioned operating handle tilted forward,
The bow thruster generates a leftward or rightward propulsion force to turn the ship forward or left or rightward, and an operation button that can be operated on either the left or right side is provided at the upper end of the operation handle. At the neutral position of the operating handle, the stern thruster is set to the left or right maximum directivity position by either the left or right operation of the operation button, and only the right or left thrust is generated. At the same time, a propulsive force is generated in the bow thruster in the reverse direction so that the ship turns left or right in a stopped state.

According to the present invention, the driver moves the boat forward or backward by swinging the operation handle forward or backward while holding the single operation handle. The ship is turned forward or left or right by the swinging operation in the right or left direction, and the ship is parked by turning either the left or right of the operation button at the neutral position of the operation handle to turn left or right Since it can be turned, various driving operations such as turning left and right within a narrow range can be easily performed.

According to a second aspect of the present invention, in the above configuration, the bow thruster and the stern thruster are each configured by a propeller which is rotationally driven by a motor.

According to a third aspect of the present invention, in the above configuration, the stern thruster is disposed in a recess formed in the bottom of the hull, and is configured to protrude below the hull during operation.

According to a fourth aspect of the present invention, in the above structure, the stern thrusters are arranged in a pair symmetrically with respect to the hull center line so as to generate a propulsive force in the same direction. Things.

According to the second to fourth aspects, the simplification of the driving operation can be achieved with a simple configuration.

[0011]

[0012]

[0013]

1 and 2, a laver farming work boat 1 is provided with a bridge 3 at the rear of the hull 2 (bridge floor 30), and an engine 10 is installed in front of the bridge 3. The propeller 130 which is rotationally driven via the propeller shaft 110 is disposed on the stern bottom, and the rudder plate 132 is disposed on the rear side. The propeller shaft 110 is rotatably held by a holding bracket 112. Further, a pair of stern thrusters 13 for generating thrust in the stern width direction are provided on the stern stern bottom in the width direction of the stern, and a fore part thruster 131 is provided on the bow bottom.

A laver net guide 4 is provided on the hull 2, and a guide extension 41 is provided at the front end of the laver net guide 4. A flip-up means 40 is provided at the base end of the guide extension 41.
By rotating the guide extension 41 from the state of the solid line to the state of the imaginary line about 0 in FIG. Further, a support portion 42 is formed near the base of the guide extension portion 41, and the support portion 42 contacts the bow deck so as to support the guide extension portion 41 in a flooded state.

The laver net guide 4 extends from the bow end to the rear of the stern end along the sides of both boats, and is supported at each of the sides of the boat by struts 43, and gradually extends from the bow end to the vicinity of the bridge 3. It rises, gradually descends behind the bridge 3, and extends to the rear of the stern end.

A hydraulic laver cutting device 5 is disposed below the laver net guide 4 near the bow, and a laver storage 50 for storing the laver cut by the laver cutting device 5 is provided below the hull. Are formed. An acid treatment tank 7 is provided on the bridge 3, and the acid treatment tank 7 extends to the rear end of the bridge 3 along the laver net guide 4. A chemical tank 70 is provided at the rear end below the acid treatment tank 7 and behind the bridge 3, and a collection pipe (flow passage) for collecting the chemical is supplied from the downstream end of the acid treatment tank 7 to the chemical tank 70. ) 71 are derived. A supply pipe (flow path) 72 for supplying a chemical solution is led out of the chemical tank 70, and the leading end of the supply pipe 72 is guided to the upstream end of the acid treatment tank 7.

As shown in FIGS. 2 and 3, the bridge 3
An operation handle 6 for a thruster operated by the driver 100 is installed in the inside, and the operation handle 6 is swung in the front-rear direction (F direction and B direction) around the base thereof, so as to be attached to the stern thruster 13. The thrusters 13 and 131 are configured to generate a propulsion force in the front-rear direction and swing the operation handle 6 in the left and right directions (FL direction and FR direction) in a forwardly inclined state.
The driving force is generated in the right and left directions. An operation button 6 is provided at the upper end of the operation handle 6.
The thruster 13 and the bow thruster 131 generate thrusts in opposite directions to each other by operating the operation button 60.

As shown in FIGS. 5 and 6, the stern thruster 13 is attached to a recess 12 formed in the transom 2b of the hull 2 so as to penetrate the upper wall 12a of the recess 12. A pair of left and right recesses 12 are arranged at the rear part of the hull 2 at positions symmetrical to each other with respect to the hull center line, and as shown in FIG. It is formed so as to be depressed toward, and is opened downward and backward.

The stern thruster 13 has a propeller rotatably mounted at a lower end thereof, and is rotatable on the upper wall 12a via a cylindrical support member 14 in the axial direction (vertical direction).
A thruster body 15 movably mounted on the hull 2, a vertical movement device 16 for vertically moving the thruster body 15 with respect to the hull 2, a direction changing device 17 for rotating the thruster body 15 about a vertical axis. It is configured.

The thruster main body 15 is formed in a circular cross section and fitted to the cylindrical support member 14 to form the main shaft pipe 1.
5a and a propeller driving hydraulic motor 15b fixed to the lower end of the main shaft pipe 15a.
Are connected so as to be rotatable in a state where the movement in the vertical direction is restricted. Although not shown, a seal member for preventing seawater from entering the hull is provided at a fitting portion between the main shaft pipe 15a and the tubular support member 14.
The oil passage of the hydraulic motor 15b is
The joint 15c at the upper end of the main shaft pipe 15a and the oil hose 15 connected thereto
It is communicated with the hydraulic circuit device via d and the like.

That is, in the thruster body 15,
Hydraulic circuit device drives hydraulic motor 15b for driving propeller
Is driven, and the propeller rotates. And
By switching the rotation direction of the hydraulic motor 15b forward and reverse by the hydraulic circuit device, the rotation direction of the propeller of the stern thruster 13 is also switched forward and reverse.

The vertical moving device 16 is provided with the slider 1
6a, a pair of left and right round bar-shaped guide rods 16b penetrating the slider 16a in the vertical direction, a feed screw 16d screwed to a nut member 16c fixed to the slider 16a and extending vertically, and an upper end of the feed screw 16d And a hydraulic motor 16e for vertical movement which is gear-coupled to the section. The lower end of the guide rod 16b is
a and the upper end is the support plate 1
8 is fixed to the hull 2.

The feed screw 16d has an upper end rotatably supported by the support plate 18 and a lower end rotatably supported by the upper wall 12a. In addition, the feed screw 16d is formed such that its upper end portion penetrates through the support plate 18 and protrudes upward, and the handle lever 19 (FIG. 6) can be attached to the protruding end portion. . That is, the handle lever 19
Is attached to the feed screw 16d and turned, whereby the feed screw 16d can be manually rotated. The hydraulic motor 16e for vertical movement is supported and fixed to the hull 2 via a bracket (not shown). The oil passage of the hydraulic motor 16e for vertical movement is also connected to the hydraulic circuit device via an oil hose (not shown).

That is, according to the vertical movement device 16, the rotation of the hydraulic motor 16e is transmitted to the feed screw 16d by driving the hydraulic motor 16e for vertical movement by the hydraulic circuit device, and the nut screwed to the feed screw 16d. The slider 16a having the member 16c moves up and down along the guide rod 16b together with the thruster main body 15. 5 and 6.
Between the rising position indicated by the solid line and the lowered position where most of the propellers of the stern thruster 13 project below the hull bottom surface 2c as indicated by the imaginary line.
3 can be moved up and down via the thruster main body 15.

It should be noted that the vertical moving device 16 is connected to the stern thruster 13 through the thruster body 15 only when the propeller of the stern thruster 13 is located within a rotation range of about 10 degrees left and right with respect to a position facing rearward. The structure is such that the stern thruster 13 can be lifted from the lowered position. This is because when the propeller of the stern thruster 13 rises,
This is to prevent the right and left side walls 12b from hitting. The thruster body 15 can also be manually moved up and down by rotating the feed screw 16d by the handle lever 19. The imaginary line L shown in FIG. 6 is the sea surface at the time of traveling.

The direction changing device 17 has a structure in which the thruster body 15 is rotated around an axis by a hydraulic cylinder. This hydraulic cylinder is configured by connecting a pair of left and right single-acting cylinder bodies 17a via a common piston rod 17b. The cylinder body 17a is supported and fixed to the slider 16a of the vertical movement device 16, and the piston rod A rack provided integrally with 17b is engaged with a pinion 17c of the main shaft pipe 15a. The cylinder body 17a has a structure in which pressure oil is supplied only to the extension side, and this oil passage is connected to the hydraulic circuit device via an oil hose 17d. Further, the direction changing device 17 is configured such that the thruster main body 15 cannot be turned while the propeller of the stern thruster 13 is housed in the recess 12. This prevents the propeller of the stern thruster 13 from hitting the left and right side walls 12 b of the recess 12. When the stern thruster 13 is lowered and rotated, the stern thruster 13 is configured to start rotating after the lowering of the stern thruster 13 is completed.

That is, according to the direction changing device 17, the left and right cylinder main bodies 17 are moved in a state where the thruster main body 15 is positioned at the lowered position by the vertical moving device 16.
5A, by supplying the hydraulic pressure to the right cylinder body 17a in FIG. 5 from the hydraulic circuit device, the thruster body 15 rotates clockwise as viewed from above in the axial direction. Therefore, the supply destination of the hydraulic pressure is changed to the left and right cylinder bodies 17.
By switching at a, the thruster body 15 rotates clockwise or counterclockwise from the position shown in FIG.

Further, the direction changing device 17 is set so that the maximum rotation angle of the thruster main body 15 is about 180 degrees. More specifically, the position where the propeller of the stern thruster 13 is directed from the position pointing to the right side of the hull as shown by the imaginary line 13R in FIG. It is set so as to be rotated within a rotation range leading to. The operation of the propellers of the stern thruster 13 is performed simultaneously on the left and right propellers, and is configured to always generate a propulsive force in the same direction.

Instead of a pair of stern thrusters, only one stern thruster may be provided.

The bow thruster 131 has a propeller disposed in a water passage penetrating in the width direction of the bow at the bottom of the bow. The propeller is rotated forward and backward by a hydraulic motor (not shown) installed in the ship. It is configured to be possible. Screens are attached to both ends of the water passage to prevent foreign substances in the sea from hitting the propeller.

In the above configuration, during normal traveling, the guide extension portion 40 is positioned on the ship as shown by the imaginary line in FIG. 2, the stern thruster 13 is housed in the recess 12, and the propeller 130 is driven by the engine 10. Rotate to make the ship move forward. At the time of seaweed harvesting at the farm, the guide extension portion 40 is projected forward of the bow to sink the tip portion below the sea surface 90, the propeller 130 is stopped, and the stern thruster 13 is lowered and turned rearward. To move toward the laver net on the sea level 900 while advancing the ship at a very low speed. At this time, the stern thruster 13 and the bow thruster 131 are operated to adjust the course of the ship. As the hull 2 progresses, the seaweed net on the sea surface 900 is scooped up by the guide extension part 40 and moved along the seaweed net guide 4 in the stern direction. In the meantime, the seaweed adhering to the seaweed net is cut by the seaweed cutting device 5 and dropped into the seaweed storage 50 below. The seaweed net from which the seaweed has been cut is subjected to acid treatment by passing through the acid treatment tank 7 on the bridge 3, and is returned to the sea surface 900 behind the stern through the seaweed net guide 4. The cutting of the seaweed increases the weight of the hull 2 and raises the draft as indicated by the sea surface 90.

In order to perform such an operation, it is necessary to accurately set the course of the laver farming work boat 1 or to make a sharp turn in a narrow range. Therefore, the course is adjusted by operating the operation handle 6 shown in FIG. First, when the operation handle 6 is rotated in the direction of arrow F (forward), as shown in FIG.
Only 3 is driven to move forward. When the operation handle 6 is rotated in the direction of the arrow FL in FIG. 3 from this state, the bow thruster 131 is driven to generate a leftward propulsive force, and turns leftward as shown by 1FL in FIG. On the other hand, when the operation handle 6 is turned in the direction of arrow FR in FIG. 3, the bow thruster 131 is driven, and a rightward propulsive force is generated.
Turn right as shown in 1FR.

In this example, the rotation speed of the stern thruster 13 is configured to change in accordance with the amount of tilt of the operation handle 6. However, regardless of the amount of tilt of the operation handle 6, the rotation speed of the stern thruster 13 is changed. May be constant.

When the operation handle 6 is further turned in the direction of arrow B (rearward), only the pair of stern thrusters 13 are driven to move backward as shown in FIG. When the operation handle 6 is released after being operated in the direction of each arrow,
Automatically returns to neutral and both thrusters 1
3, 131 are stopped. When the operation button 60 is pressed in the left or right direction in the neutral state, the bow thruster 131 and the stern thruster 13 generate thrusts in opposite directions to each other as shown in 1R and 1L in FIG. And the ship will turn clockwise or counterclockwise at that position. When the operation button 60 is operated, the rotation of the thruster is started after the direction of each thruster changes to a predetermined direction.

As described above, the driver 1 selects one of the six types of courses: forward, reverse, right turn, left turn, right turn, and left turn.
Since 00 can be performed while holding the single operation handle 6, the driving operation is easy.

In the above embodiment, only the work boat for laver cultivation has been described. However, the present invention can be similarly applied to a boat which requires selection of various routes similarly.

[0037]

According to the present invention, the driver moves the boat forward or backward by swinging the operating handle forward or backward while holding the single operating handle, and the operating handle is tilted forward. Turn the ship forward left or right by swinging left or right, and turn left or right when the ship is stopped by inputting either the left or right of the operation button at the neutral position of the operation handle. Since the vehicle can be turned right, various driving operations such as turning left and right within a narrow range can be easily performed.

According to the second to fourth aspects, the simplification of the driving operation can be achieved with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, in which an upper half shows a rear half of a hull and a lower half shows a front half of a hull.

FIG. 2 is a side view of FIG. 1, showing a rear half of the hull on the upper side and a front half of the hull on the lower side.

FIG. 3 is a perspective view of an operation handle.

FIG. 4 is an explanatory diagram of path selection by an operation handle.

FIG. 5 is a sectional view of the stern thruster on one side as viewed from the front of the hull.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nori cultivation work boat 2 Hull 3 Bridge 4 Nori net guide 5 Nori reaper 6 Operation handle 7 Acid treatment tank 10 Engine 13 Stern thruster 60 Operation button 131 Bow thruster

Claims (4)

(57) [Claims] 1. A bow that generates a propulsive force only in the width direction of a ship.
Propulsion force is generated in the thruster and in the width direction and in the longitudinal direction
The stern thruster to be installed is installed at the bottom of the ship,
A thruster that swings back and forth and left and right about the base
The stern thruster of the ship equipped with a
180 degrees maximum within the range between the horizontal pointing position and the right pointing position
In the neutral position of the operation handle, the stern thruster is
Forward and rearward thrusters and stern thrusters
The propeller is stopped rotating and the operation handle is swung forward or backward.
Forward or rearward thrust on the stern thruster.
Raise the ship, move forward or backward, and turn left or right with the forward tilt of the operation handle.
Swinging the stern thruster to the right or left
To generate directional and forward propulsion,
Produces left or right thrust on bow thruster
Then, the ship is turned leftward or rightward, and either the left or right
Operation buttons are provided for input operation
In the neutral position, either to the left or right of the operating button
Input operation to move the stern thruster to the left maximum pointing position
Right or left as the maximum directivity position
The thruster at the same time
Generates propulsive force in the opposite direction, turning left when the ship is stopped
Or a course control device for a laver farming work boat or the like, characterized in that it is turned right . 2. The course control device for a laver cultivation work boat or the like according to claim 1, wherein the bow thruster and the stern thruster are constituted by propellers that are rotationally driven by a motor. 3. The laver cultivation work according to claim 1, wherein the stern thruster is arranged in a concave portion formed in the bottom of the hull, and is configured to protrude below the hull during operation. Route control device for ships and others. 4. The stern thruster is arranged in a pair of right and left at symmetric positions with respect to the hull center line so as to generate propulsion forces in the same direction. A route control device for the described seaweed culture work boat or the like.