JPH09298929A - Seaweed work boat - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To reduce the resistance of water by a guide extension and to reduce the bending stress acting on the guide extension due to a water flow. SOLUTION: A guide member 4 extending from the bow end to the stern end is provided, and the seaweed net on the sea is passed along the guide member 4 on the ship, while the seaweed attached to the seaweed net is on the ship. In the seaweed cultivation work boat that is cut by the cutting device 5, a guide extension 41 is formed at the front end of the guide member 4 to scoop up the seaweed net on the sea and send it to the guide member 4. Is configured so that it can be switched between a use state extending from above the boat to below the sea level and a stored state in which the whole is located on the boat. The tip end side 416 and 417 of this guide extension portion 41 are members thinner than the base end side 415. A reinforcing plate 82 that is formed and receives bending stress that acts on the guide extension due to the pressure of the water flow is attached to the guide extension 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seaweed work boat for collecting seaweed that has been cultivated on the sea using a seaweed net.

[0002]

2. Description of the Related Art Conventionally, as this type of work boat for seaweed cultivation, a guide member for seaweed net is attached to the upper part of the hull, and the front end of this guide member is projected forward from the bow and the front end is submerged under the sea surface. It is known that by advancing toward the seaweed net in this state, the seaweed net is guided onto the ship and the seaweed is continuously collected on the ship. That is, the seaweed aquaculture work boat is provided with a guide member for seaweed net on its hull, and this guide member extends to the stern side directly above the seaweed cutting device at the front of the hull and above the bridge, An acid treatment tank is provided along the nori net guide member. A guide extension is provided on the bow, and the tip of the guide extension is configured to extend from above the ship to below the sea so as to scoop up the seaweed net on the sea surface. Then, by moving the ship forward, the seaweed net on the sea is scooped at the guide extension and moved in the stern direction along the guide member for the seaweed net, and the seaweed adhering to the seaweed net is cut off by the seaweed cutting device, and then the acid is removed. By passing through the treatment tank, the seaweed net is immersed in the treatment liquid for acid treatment for acid treatment.

[0003]

In the above structure, when the boat advances with the tip end of the guide extension part immersed in the water, the guide extension part receives a pressure due to the relative movement (water flow) of water with respect to the ship. However, there is a problem that the guide extension part receives a large bending stress due to this pressure and the propulsion resistance of the ship also increases.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and the resistance of water by the guide extension is small, so that the bending stress acting on the guide extension by the water flow is also small, and It provides a work vessel for seaweed aquaculture that has low propulsion resistance.

[0005]

According to a first aspect of the present invention, a guide member extending in the lengthwise direction of the hull is provided on the ship, and the seaweed net on the sea is passed along the guide member while the guide member is being passed. In a work vessel for seaweed cultivation in which the seaweed attached to the seaweed is cut on board, a guide extension is formed at the front end of the guide member to scoop up the seaweed net and send it to the guide member. The guide extension is configured to be switchable between a use state that extends from the ship to below the sea level and a stored state where the entire guide is located on the ship.The tip end side of this guide extension is formed of a member thinner than the base end side. It is what

According to the first aspect of the present invention, the pressure received by the water flow during the seaweed cutting work is small, so that the weight of the guide extension can be reduced and the propulsion resistance of the ship during the seaweed cutting work can be reduced. .

According to a second aspect of the present invention, a reinforcing plate, which receives bending stress acting on the guide extension due to the pressure of the water flow, is attached to the guide extension downwardly below the guide extension. is there.

According to the second aspect of the invention, since the reinforcing member of the guide extension portion is oriented in the water flow direction, the resistance of the reinforcing member from the water flow can be reduced.

According to a third aspect of the present invention, the guide extension portion is
A thick pipe on the base end side and a thin pipe on the tip end side are connected by a connecting member, and the connecting member is configured to smoothly connect the base end side and the tip end side. is there.

According to the third aspect of the invention, the movement resistance when the seaweed net passes through can be reduced in the structure in which the guide extension portion is formed to have a smaller diameter toward the tip end portion.

According to a fourth aspect of the invention, the guide extension portion is
A pair of base end members located on both sides of the ship, a front end member that gradually approaches each other toward the front end side and is connected to each other at the front end, and a connecting member in the ship width direction that connects the base end members to each other. The connecting member is configured so as to be located on the ship when the guide extension is in use.

According to the fourth aspect of the present invention, even if the seaweed adhered to the seaweed net hits the connecting member and falls, it will be dropped onto the bow deck, and it is possible to prevent the seaweed from being unnecessarily dropped into the sea. it can.

[0013]

1 to 3, a seaweed cultivation work boat 1 is provided with a seaweed net guide member 4 on its hull, and the seaweed net guide member 4 is attached to the bows of both sides of the ship. From the section to the rear of the stern end, and are supported by columns 43 on both sides of the vessel. An acid treatment tank 7 is formed along the guide member 4 from the center of the hull to the rear side for acid treatment while the seaweed net scooped from the sea is passed over the seaweed net guide member 4. Further, on the ship, a bridge 3 having a driver's seat 30 installed below the acid treatment tank 7 is provided at a position slightly rearward of the center portion, and the roof of the bridge 3 is formed by the acid treatment tank 7. The bridge 3 is formed on one side (starboard side) with respect to the center line of the hull, and the auxiliary engine 6 is arranged on the lower side (ship bottom) of the other side (port side) of the bridge 3. Has been done.

In the bow portion, the guide member 4 extends in the stern direction from the bow end close to the deck, and then rises diagonally rearward toward the acid treatment tank 7, and gradually rises on the bridge 3 and behind it. It descends and extends to the rear of the stern end. A seaweed retrieving device 5 for retrieving the seaweed adhering to the seaweed net is arranged below the nori seaweed guide member 4 in the bow portion. A warehouse 50 is formed.

A guide extension 41 is provided at the front end of the seaweed net guide member 4, and the guide extension 41 is provided.
Sleeves 42 are provided at the base ends of both sides of the sleeve 42. The sleeves 42 are externally fitted to guide bars 48 extending in the front-rear direction on the side deck of the ship, and are moved back and forth along the guide bars 48, By moving from the state of one solid line to the state of an imaginary line, it is possible to move the guide extension portion 41 from a state in which the tip end thereof is immersed in water to a storage state in which the whole is located on the ship. A cover plate 80 that covers both sides of the seaweed reaping device 5 is attached below the guide member 4 in the bow portion. The lower end of the cover plate 80 is in contact with the deck to prevent the cut seaweed from scattering laterally into the sea. A bow thruster 62 for generating thrust in the ship width direction is provided at the bottom of the bow, and a pair of outboard motors 8 is mounted at the stern end.

The guide extension portion 41 is formed of a stainless steel pipe material, and is connected to the pair of base end members 415 located on both side portions of the ship, gradually approaching each other toward the tip end side. End member (medium diameter member 416,
A small diameter member 417), a connecting member 412 in the ship width direction for connecting the base end member 415 to each other, and the connecting member 412
And connecting members 418 and 419 in the front-rear direction that connect the tip members 416 and 417, and the connecting member 412 is configured to be located on the ship as shown in FIG. In addition, a curved portion 413 that is curved so as to be recessed rearward is formed at the central portion in the ship width direction. Further, the guide extension portion 41 is configured so as to become thinner toward the tip end side. That is, the base member 415 is made of a thick pipe, and the tip member is made of a medium diameter pipe 416 having a medium diameter and a small diameter pipe 417 is made of a thin pipe.
And are sequentially connected to each other to form a chevron having a planar shape and a pointed tip. As shown in FIGS. 3 and 4A, the connecting portion between the proximal end member 415 and the medium-diameter member 416 of the distal end member has a connecting member 86 that is a tapered tubular connecting member and has a large-diameter portion 4.
By externally fitting the end portion of 15 and the end portion of the medium diameter portion 416, both members are connected to each other to be continuous with a smooth outer surface. The connecting portion between the medium diameter portion 416 and the small diameter portion 417 may be formed in the same manner. Further, as shown in FIG. 4B, the end portion of the medium diameter portion 416 is fitted into the end portion of the large diameter portion 415 and welded (welding portion 81), and this welding portion 81 is used to form the outer surface of the large diameter portion 415. The finishing may be performed so that the outer surface of the middle diameter portion 416 is smoothly continuous. In this case, the welded portion 81 includes the large diameter portion 415 and the medium diameter portion 41.
A connecting member that connects 6 and 6 is formed.

Further, as shown in FIG. 5, the lower surface portion of the large diameter portion 415 of the guide extension portion 41 is composed of a flat plate portion 83 and an edge member 84 made of a round bar attached along the lower end portion thereof. A reinforcing plate 82 is attached so that the reinforcing plate 82 receives a bending stress acting on the guide extension portion 41 by the pressure of the water flow, and the reinforcing plate 82 is arranged along the base end member 415 so as not to be affected by the water flow. Mounted downwards (almost parallel to the water flow direction). The tip portion of the reinforcing plate 82 is provided over the large diameter portion 415 and the medium diameter portion 416, and is in contact with the lower surface of the connecting member (continuous tool 86). 416
It is possible to improve the connecting strength of the connecting portion with. Further, as shown in FIG. 3, a pair of left and right retaining pins 85 projecting downward are attached to the lower side of the connecting member 412 of the guide extension portion 41. Correspondingly, the locking holes 1 are provided on the bow deck 13.
2 is formed so that the stopper pin 85 is fitted into the locking hole 12 when the guide extension portion 41 is in use. In the fitted state of the stopper pin 85, the stopper pin 85 supports the guide extension portion 41 when the guide extension portion 41 receives a pressing force from the front by the water flow, and the support portion bends the guide extension portion 41. Since it is close to the bending portion where a large amount of stress acts, the bending stress acting on this portion is reduced, which contributes to weight reduction of the guide extension portion 41.

At the upstream end of the acid treatment tank 7, there is installed a treatment liquid jetting section 72 having a plurality of jet outlets formed substantially evenly in the ship width direction. The treatment liquid jetting section 72 is provided with a pump (not shown). By supplying the processing liquid through the supply pipe, the processing liquid is formed to be ejected substantially uniformly in the ship width direction. That is, as shown in FIG. 6, the treatment liquid jetting section 72 is formed with jetting ports 720 that are uniformly distributed in the ship width direction, and the jetting ports 720 spray the treatment liquid onto the seaweed net passing above the jetting port 720. Is formed obliquely upward.

A treatment liquid tank 70 is installed on the lower side of the acid treatment tank 7 and on the rear side of the bridge 3, and a treatment liquid introducing portion 75 is formed on the upper side thereof, and the treatment liquid tank 75 is formed at the downstream end of the acid treatment tank 7. The recovery pipe 71 led out of the processing liquid groove 74 is guided to the processing liquid introducing section 75. This processing liquid introduction part 75
A mesh cylinder 76 is provided therein, and the processing liquid is supplied into the processing liquid tank 70 through the cylinder 76.
As a result, the seaweed and the like in the collected treatment liquid is filtered and the treatment liquid is collected in the treatment liquid tank 70.
Further, the acid treatment tank 7 is integrally formed by FRP, and the acid treatment tank 7 has a cleaning surface 73 on the upper surface through which the seaweed net closely passes, and the treatment liquid is provided on both sides of the cleaning surface 73. A side groove is formed to flow into the processing liquid groove 74 at the downstream end of the acid treatment tank 7, and the cleaning surface 73 constitutes the roof of the bridge 3.

In the above structure, during normal traveling, the guide extension portion 41 is positioned on the ship as indicated by the phantom line in FIG. 1, and the ship travels forward in this state. When the seaweed cutting work is performed at the farm, the sleeve 42 is used as the guide rod 4
By moving the guide extension 41 forward along line 8, the guide extension 41 is projected forward of the bow and the tip end thereof is immersed below the sea level. This operation is performed by the person using the bending portion 41 of the connecting member 412.
3 by grasping and pulling the connecting member 412 on the front side, and sliding the sleeve 42 along the guide rod 48 moves the guide extension portion 41 forward.
When the guide extension portion 41 protrudes from the bow end by a predetermined amount, further movement is stopped by an appropriate stopper, the guide extension portion 41 is lowered at that position, and the stop pin 85 protruding on the lower surface is inserted into the locking hole 12. Insert and fix the position. At this time, since a space 414 is formed in the center of the connecting member 412 on the front side of the curved portion 413, a person who has pulled the connecting member 412 up to the bow end can secure a scaffolding by this space 414, and workability is improved. Is improved. Also, when switching the guide extension portion 41 between the use state and the storage state,
When the guide extension portion 41 is slid on the bullwork upper surface of the bow portion, the edge resistance 84 made of a round bar is in contact with the bullwork upper surface, so that sliding resistance is reduced and the guide extension portion 41 is easily moved. Can be made.

In this manner, with the guide extension portion 41 projecting below the sea surface of the bow, the ship is advanced at a slow speed toward the seaweed net on the sea surface. At this time, the bow thruster 62 is operated to adjust the course of the ship. As the ship progresses, the guide extension 41 scoops up the seaweed net on the sea surface to move the seaweed along the seaweed net guide member 4 in the stern direction. And in the meantime, seaweed reaper 5
The seaweed adhering to the seaweed net is cut off and dropped into the seaweed storage 50 below. At this time, the seaweed adhering to the seaweed net may travel along the guide extension 41 while hanging down from the seaweed net and hit the connecting member 412 before being dropped from the seaweed net before reaching the seaweed reaping device 5. However, since the connecting member 412 is located rearward of the bow end as shown in FIG.
Therefore, it is prevented that nori is dropped into the sea unnecessarily. Further, since the width of the rear portion of the guide extension portion 41 is close to the width of the bow portion of the hull, when passing through the guide extension portion 41 and passing through the bow portion, the seaweed net is caught on both side end portions 14 of the bow portion. Is prevented.

The seaweed net from which the seaweed is cut off is acid-treated by passing through the acid-treating tank 7 on the bridge 3, guided by the seaweed net guide member 4 and returned to the sea surface at the rear of the stern and used. The acid treatment liquid thus obtained is recovered in the acid treatment liquid tank 70 through the recovery pipe 71. During this acid treatment,
The treatment liquid in the treatment liquid tank 70 is jetted from the treatment liquid jetting unit 72 through the supply pipe toward the cleaning surface 73 and the seaweed net passing therethrough. The processing liquid on the cleaning surface 73 is
As the seaweed net moves, it is made to flow to the downstream side, and the treatment liquid remains in contact with the seaweed net. Moreover, since the plurality of ejection ports are formed substantially evenly in the ship width direction and the treatment liquid is formed so as to be ejected substantially uniformly in the ship width direction, it is substantially uniform in the seaweed net passing over the cleaning surface 73. Can be contacted with the treatment liquid.

Further, the guide extension 41 is pushed by the pressure of the water flow due to the forward movement of the ship and receives bending stress, but this bending stress is supported by the reinforcing plate 82, and the rear end of the reinforcing plate 82 is Since it extends to the lower surface of the bent portion of the base member 415, it is possible to reliably prevent the guide extension portion 41 from bending due to the pressure of the water flow. Further, since the guide extension portion 41 is formed so as to be thinner toward the tip end portion thereof, the pushing force is correspondingly reduced, whereby bending stress due to water flow and ship propulsion resistance are also reduced.

The seawater used for cleaning onboard the ship is taken in from the bottom of the ship via a Kingston valve (not shown), but the opening of this Kingston valve to the outside of the ship is set to a large value (for example, if it is connected to the Kingston valve, It is preferable that the opening area is larger than the passage area of the pipe) so as to prevent clogging due to seaweed debris in the sea. That is, when the opening is small, the inflow speed of seawater is high, so floating laver debris is easily sucked from the opening and clogs the filter, but increasing the opening reduces the inflow speed of seawater. Then, it is possible to suppress the suction of the seaweed debris, and thereby to prevent the filter from being clogged with the seaweed debris.

[0025]

According to the first aspect of the present invention, the pressure exerted by the water flow during the seaweed cutting work is small, so that the guide extension can be made lighter and the propulsion resistance of the ship during the seaweed cutting work can be reduced. You can

According to the second aspect of the invention, since the reinforcing member of the guide extension portion is oriented in the water flow direction, the resistance of the reinforcing member from the water flow can be reduced.

According to the third aspect of the invention, the movement resistance when the seaweed net passes through can be reduced in the structure in which the guide extension portion is formed to have a smaller diameter toward the tip end portion.

In the invention of claim 4, even if the seaweed adhered to the seaweed net hits the connecting member and falls, it will be dropped on the bow deck, and it is possible to prevent the seaweed from being unnecessarily dropped into the sea. it can.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged view of the bow portion of FIG. 1.

4A is an enlarged cross-sectional view of a portion A in FIG.
[Fig. 6] is a side view showing another example of (a).

5 is a cross-sectional view taken along line VV of FIG.

FIG. 6 is a cross-sectional view of a treatment liquid injection unit of the acid treatment tank.

[Explanation of symbols]

 1 Nori cultivation work boat 3 Bridge 4 Nori net guide member 5 Nori mower 7 Acid treatment tank 8 Outboard motor 41 Guide extension 42 Sleeve 48 Guide rod 50 Nori warehouse 81 Welding part (connecting member) 82 Reinforcing member 86 Connector (Connecting member) 412 Connecting member 413 Curved part 415 Base end member 416 Medium diameter member 417 Small diameter member

Claims (4)

[Claims] 1. A guide member extending in the length direction of the hull is provided on the ship, and the seaweed net on the sea is passed along the guide member on the ship, while the seaweed attached to the seaweed net is cut off on the ship. In the work vessel for seaweed cultivation as described above, a guide extension is formed at the front end of the guide member to scoop the seaweed net on the sea and send it to the guide member, and the guide extension extends from the ship to below the sea level. State and
A work vessel for seaweed cultivation, characterized in that it is configured so that it can be switched to a retracted state in which the whole is located on a ship, and the tip end side of this guide extension is formed of a member thinner than the base end side. 2. A reinforcing plate, which receives bending stress acting on the guide extension due to pressure of water flow, is attached to the guide extension downwardly below the guide extension. Nori seaweed work boat described in 1. 3. The guide extension comprises a thick pipe on the base end side and a thin pipe on the tip end side connected by a connecting member, and the connecting member smoothes the base end side and the tip end side. The work vessel for seaweed aquaculture according to claim 1 or 2, characterized in that 4. The guide extension portion includes a pair of base end members positioned on both side portions of the ship, a front end member gradually approaching each other toward the front end side and connected to each other at the front end portion, and the base end member. The seaweed according to claim 1, 2 or 3, wherein the seaweed has a connecting member in the ship width direction which is connected to each other, and the connecting member is configured to be located on the ship when the guide extension is in use. Work boat for aquaculture.