JPH0747989A - Work barge for removing hydrophyte - Google Patents

Abstract

PURPOSE:To provide a practical work barge for removing a hydrophyte, which is able to surely cut the root of this hydrophyte along the water bottom and wall of this plant planted on the water bottom and the water wall as well as to convey it to a storage tank and for recovery. CONSTITUTION:Plural pieces of serrated cutters are attached to the surface of a belt 3 of a long conveyor 2 to be reached to each water bottom of sea, lake, pond, swamp, rivers or the like from a catamaran 7 and provided with a roller at the tip at the specified intervals, making the tip of the conveyor 2 into a state of being directed to the traveling direction, and it is attached to an intermediate part of the catamaran 7 free of rotation, a preceding winch 20, winding or loosening a wire attached to the conveyor 2 as a holding means holding the conveyor 2 at the specified angle, is installed in this catamaran 7. In addition, a storage tank 5, housing the cut hydrophyte to be conveyed by the conveyor 2, is installed in this catamaran 7 as well, and in this constitution, a rear part of the conveyor from a turning shaft 8 serving as the turning center of the conveyor 2 rotates separately out of the conveyor front part.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention removes aquatic plants such as aquatic plants and seaweeds vegetated on the water bottom and water walls of the sea, lakes, ponds, swamps, rivers, etc. It concerns work boats.

[0002]

2. Description of the Related Art Conventionally, aquatic plants vegetated on the bottom of a water or a water wall propagate and cause pollution and deterioration of appearance. there were.

For this reason, work boats that merely cut aquatic plants and the aquatic grass cutting device disclosed in Japanese Patent Laid-Open No. 56-18530 are known. However, since this aquatic plant cutting device does not have a long conveyor that reaches the bottom of the water, it is impossible to cut the aquatic plants that vegetate on the water from the roots. Further, when a rotary aquatic plant cutter at the tip of a conveyor is used to cut a soft aquatic plant without a waist, the aquatic plant is made to fall down and comes off from the aquatic plant cutter, which makes it difficult to cut reliably.

[0004]

The problem to be solved by the present invention is to solve these problems of the prior art, and to make aquatic plants vegetated on the water floor or water wall of the aquatic plant along the water floor or water wall. An object of the present invention is to provide a practical aquatic plant removal work ship that can be reliably cut from the root and transported to a storage tank for recovery.

[0005]

[Means for Solving the Problems] The gist of the present invention, which has solved such problems, is as follows: 1) A state in which the tip of a long conveyor reaching the bottom of the sea, lake, pond, swamp, river, etc. It is attached to the hull so that it can rotate freely, and is equipped with a holding means for holding the conveyor at a predetermined angle.A plurality of cutting blades for cutting aquatic plants such as aquatic plants and seaweeds are attached to the conveyor at predetermined intervals, and the conveyor is conveyed by An aquatic plant removing work boat, characterized in that the hull is provided with a storage tank for storing the cut aquatic plants. 2) The aquatic plant removing work boat according to 1), wherein a roller for grounding the water bottom is provided at the tip of the conveyor. 3) The aquatic plant removing work vessel according to any one of 1) and 2) above, wherein the rear part of the conveyor can rotate independently of the front part of the conveyor from the rotation axis that is the center of rotation of the conveyor. Said a bare 1),
2), 3) The aquatic plant removing work vessel according to any one of 5) The aquatic plant according to any one of 1) to 4) above, wherein the hull is a catamaran and a conveyor is rotatably attached in the middle of the catamaran. Removal work vessel 6) The aquatic plant removal work vessel according to any one of 1) to 5) above, wherein the cutting blade has a serrated shape.

[0006]

In the present invention, the conveyor is held by a holding means or a roller to adjust the height of the tip of the conveyor to the height at which the aquatic plant is desired to be cut or the water bottom. If the ship is advanced in this state, the cutting blade attached to the conveyor is rotated by driving the conveyor, and the cutting blade cuts the aquatic plant. In addition, the cutting aquatic plants as they are, the cutting blade itself pushes up along the conveyor to the ship, and collects the aquatic plants in the storage tank provided for the ship. In this way, by moving the ship forward to cut the aquatic plants and collecting them in the storage tank, the aquatic plants can be reliably and continuously removed.

When cutting an aquatic plant vegetated on a vertical water wall or an inclined water wall, a ship is opposed to the water wall, and the tip of the conveyor is set to the water bottom or the height at which the aquatic plant is to be cut as described above. By adjusting and moving the end of the conveyor up and down along the water wall, the aquatic plants can be surely cut and collected in the storage tank in the same manner as described above.

When the aquatic plant removal operation is not performed, the conveyor bottom is lifted completely from the water by lifting the bottom of the water bottom or the conveyor adjusted to the height at which the aquatic plant is to be cut. In this state, it can navigate like a normal ship without being affected by water resistance.

When a roller for grounding the bottom of the water is provided at the tip of the conveyor, the roller rolls up and down along the surface of the bottom of the water even if the bottom of the water is uneven or sloped and is not horizontal. Since the conveyor also moves up and down in conjunction with the vertical movement of the roller, the cutting blade and the bottom of the water can always keep a certain distance to reliably cut the aquatic plant from the root.

In the case where the rear part of the conveyor is rotatable independently of the front part of the conveyor from the rotary shaft, if the rear part of the conveyor located rearward of the rotary shaft is rotated vertically or more than vertically, the rear part of the conveyor is approached. When removing the aquatic plants collected in the storage tank from the storage tank, the rear part of the conveyor does not become an obstacle, and the aquatic plants can be quickly removed from the storage tank.

When the conveyor is a net conveyor, the forward movement of the ship can prevent the flow of water such that the water hitting the conveyor escapes to both ends of the conveyor, and this flow of water pushes the conveyor upward. All aquatic plants on the way can be collected in the storage tank without being washed away. Furthermore, since the belt of the net conveyor has a net shape and many openings, the aquatic plants are pressed against the belt by the water pressure of the flow of water trying to penetrate the belt, and the aquatic plants are pushed up more reliably. It can be collected in the storage tank without fail.

When the hull is a catamaran and the conveyor is rotatably mounted in the middle of the catamaran, the both ends of the conveyor are surely secured even if the weight of the conveyor itself, the water pressure acting on the conveyor, the weight of aquatic plants, etc. are applied. Since the catamaran supports it, you can safely remove aquatic plants without losing the balance.

When the cutting blade has a sawtooth shape, the blade of the aquatic plant is scratched into the groove of the sawtooth, and the groove of the sawtooth bites into the slit, and the cutting blade rotates as if pulled out, so that tension acts on the aquatic plant. The cutting blade that cuts into the aquatic plant will further cut into the aquatic plant to reliably cut the aquatic plant.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, a catamaran equipped with two engines of length 7 m, width 6 m, and 15 ps and equipped with two engines has a roller at its tip and can rotate rearwardly from a rotary shaft to a length of 7.8.
m, 2.1 m wide net conveyor is rotatably attached, and the cutting blade has a saw blade with a cutting edge of 30c.
In this example, 53 pieces are attached at m intervals to cut and collect aquatic plants that vegetate on the uneven bottom of deep water of 5 m. FIG. 1 is a plan view of this embodiment, FIG. 2 is an explanatory view showing a cut state of this embodiment, FIG. 3 is an explanatory view showing a state in which a conveyor of this embodiment is stored, and FIG. 4 is a view of this embodiment. Explanatory view showing a state in which the rear part of the conveyor is vertically rotated, FIG. 5 is a front view of the cutting blade of the present embodiment, FIG. 6 is a right side view of the cutting blade of the present embodiment,
7 is a plan view of the plate of this embodiment, FIG. 8 is a vertical cross-sectional view of the belt of this embodiment with a cutting blade attached, FIG. 9 is an operation explanatory view of the conveyor tip of this embodiment, and FIG. 10 is this embodiment. 11 is an explanatory view showing an essential part of this embodiment, and FIG. 12 is an explanatory view showing an essential part of this embodiment. Conveyor 2
The structure of is a frame 9 having a length of 7.8 m and a width of 2.1 m in which a rotatable shaft 8 is provided at a position 6.2 m from the tip.
Net-shaped belt 3 slightly longer than the outer circumference of the frame 9
The roller chains 12 are integrally attached to the edges of both ends of the belt 3, and the guides 14 each having the same length as the upper surface of the frame 9 are provided on the upper surface of the frame 9 at the outer edges of the both ends of the frame 9, and the lower surface of the frame 9 is attached to the lower surface of the frame 9. 4 having guide plates 28 for guiding the roller chain 12 at both ends
The two guides 29 are attached at predetermined intervals so that the roller chain 12 can flow smoothly. Also, frame 9
The belt 3 longer than the outer circumference is slackened between the guides 29 below the conveyor 2 and between the guides 29. The width of the belt 3 shown in FIGS. 5 and 6 is 2 m, the height is 8.3 cm, the distance between the tips of a plurality of peaks forming a sawtooth shape is 20 mm, and the height of the peaks is equal to that of the grooves formed between the peaks. As shown in FIG. 8, a plate 31 having a sawtooth-shaped L-shaped cutting blade 4 having a depth of 50 mm and a base end having the same shape as that shown in FIG. 3 are integrally connected with each other using screws 33, 53 cutting blades 4 are similarly integrally connected at 30 cm intervals, and 53 cutting blades 4 are provided on the surface of the belt 3, and both ends of the tip of the same frame 9 are provided. A tire is attached as a roller 11 to the roller 1.
1 can be adjusted with a spring 30. Conveyor 2
A drive shaft 27 provided at the rear part is driven by a drive motor 25 via a chain 26. Also, one hull 6 has a length of 7
Two hulls 6 having a size of m, a width of 1.5 m and a height of 0.8 m are juxtaposed by two connecting members 15 and 16 to form a catamaran 7 having a water passage 17 in the middle. Has two 20 kVA generators 18 and two 15 ps engines 19. In the waterway 17 of the catamaran 7, the length is 7.8 m,
A rotary shaft 8 of the conveyor 2 having a width of 2.1 m is rotatably attached slightly rearward of the catamaran 7 and a forward winch 20 for raising and lowering the forward end of the conveyer 2 is attached to the connecting member 15, and a rear portion 13 of the conveyer is raised and lowered. The winch 21 is attached to another connecting member 16. The waterway 17 of the catamaran 7
2.9 m long and 1.
A storage tank 5 for aquatic plants 22 having a height of 4 m and a height of 0.6 m is attached.

In order to cut and collect the aquatic plants 22 on the water bottom 23 in the aquatic plant removing work vessel 1 of the present embodiment having the above-described structure, first, as shown in FIGS. Is driven to lower the roller 11 at the tip 10 of the conveyor until it comes into contact with the water bottom 23, and the drive motor 25 is driven to rotate the conveyor 2 to rotate the cutting blade 4 and advance the catamaran 7. Then, the groove 24 of the sawtooth-shaped cutting blade 4 provided on the conveyor 2 scratches and scratches the root of the aquatic plant 22, and the cutting blade 4 rotates so as to be pulled out, so that tension acts on the aquatic plant 22, The hooked sawtooth groove 24 bites further and cuts the aquatic plant 22. Cut aquatic plants 22
Is pushed upward along the belt 3 by the cutting blade 4 itself, and when reaching the end of the conveyor, the cut aquatic plants 22 are dropped and collected in the storage tank 5 provided below.

When the aquatic plant 22 floating in water is brought into contact with the belt 3 surface of the conveyor 2, the cutting blade 4 itself or the belt 3 itself pushes up and floats in the storage tank 5 in the same manner as described above. It is also possible to recover the aquatic plant 22 that was used.

Since the net conveyor is a conveyor 2 in which the belt 3 has a net shape, it is possible to prevent the flow of water such that the water hitting the conveyor 2 escapes to both ends of the conveyor 2 when the catamaran 7 advances. Due to this flow of water, the aquatic plants 22 being pushed up by the conveyor 2 can be collected in the storage tank 5 without being washed away. Further, the aquatic plant 22 is pressed against the belt 3 by the water pressure of the flow of water that tries to penetrate the belt 3 having a net shape and a large number of openings, so that it can be pushed up more reliably and stored. It can be surely collected also in the tank 5.

When the removal work of the aquatic plant 22 is not carried out, as shown in FIG. 3, the front winch 20 is driven so that the front end of the conveyor 2 can be completely lifted out of the water, and the conveyor 2 is rotated to be parallel to the water surface. Keep In this case, since the belt 3 is slackened between the guides 29 on the lower surface of the frame 9, the belt 3 can be easily rotated without being stretched. In this state, it can navigate like a general ship without being affected by water resistance.

As shown in FIG. 9, even if the water bottom 23 is uneven, the roller 11 provided at the conveyor tip 10 has the water bottom 23.
Since the conveyor 2 is rotated while moving up and down along the unevenness, the aquatic plant 22 vegetated on the uneven water bottom 23 can be surely cut from the root and recovered.

As shown in FIG. 4, since the rear portion 13 of the conveyor is rotatably rotated about the rotary shaft 8, the rear winch 21 is driven when the aquatic plant 22 collected in the storage tank 5 is removed from the storage tank 5. Then, if the conveyor rear part 13 is lifted vertically, the conveyor rear part 13 does not become an obstacle, and the collected aquatic plants 22 can be easily removed from the storage tank 5. In this case, since the belt 3 is slackened between the guides 29 on the lower surface of the frame 9, the belt 3 can be easily rotated without being stretched.

The conveyor rear portion 13 is not limited to the one that rotates independently of the rotary shaft 8.

[0022]

According to the present invention, the tip of the conveyor can be easily adjusted to the water bottom or the height at which the aquatic plants are to be cut by the holding means provided in the conveyor, and the vessel is driven by the conveyor to rotate the cutting blade. The water plants can be reliably cut from the roots and all can be reliably collected in the storage tank just by moving forward. Also, if a roller is attached to the tip of the conveyor, it is possible to quickly and reliably cut from the root of the aquatic plant even on an uneven water bottom.
Furthermore, if the cutting blade is serrated and the conveyor is a net conveyor, it is possible to surely cut even a soft aquatic plant without stiffness, and the cut aquatic plant is surely applied with the water pressure of water trying to penetrate the belt. It can be pushed up along the belt and collected in the storage tank. If the rear part of the conveyor is rotatable about the rotary shaft, the aquatic plants collected from the storage tank can be easily taken out by rotating the rear part of the conveyor vertically or more. In this way, it became a very practical aquatic plant removal work boat.

[Brief description of drawings]

FIG. 1 is a plan view of the present embodiment.

FIG. 2 is an explanatory diagram showing a cut state of the present embodiment.

FIG. 3 is an explanatory diagram showing a state in which the conveyor of this embodiment is stored.

FIG. 4 is an explanatory view showing a state in which the rear portion of the conveyor of this embodiment is vertically rotated.

FIG. 5 is a front view of the cutting blade of this embodiment.

FIG. 6 is a right side view of the cutting blade of this embodiment.

FIG. 7 is a plan view of the plate of this embodiment.

FIG. 8 is a vertical cross-sectional view in which a cutting blade is attached to the belt of this embodiment.

FIG. 9 is an explanatory view of the operation of the leading end of the conveyor of this embodiment.

FIG. 10 is an explanatory diagram showing a main part of the present embodiment.

FIG. 11 is an explanatory diagram showing a main part of the present embodiment.

FIG. 12 is an explanatory diagram showing a main part of the present embodiment.

[Explanation of symbols]

 1 Aquatic Plant Removal Work Vessel 2 Conveyor 3 Belt 4 Cutting Blade 5 Storage Tank 6 Hull 7 Catamaran 8 Rotating Axis 9 Frame 10 Conveyor Tip 11 Roller 12 Roller Chain 13 Conveyor Rear 14 Guide 15 Connecting Member 16 Connecting Member 17 Water Channel 18 Generator 19 Engine 20 Forward winch 21 Rear winch 22 Aquatic plants 23 Water bottom 24 Groove 25 Drive motor 26 Chain 27 Drive shaft 28 Guide plate 29 Guide 30 Spring 31 Plate 32 Screw hole 33 Screw

Claims (6)

[Claims] 1. A long conveyor that reaches the water bottom of a sea, lake, pond, swamp, river, etc. from the hull is rotatably attached to the hull with its tip oriented in the traveling direction, and the conveyor is held at a predetermined angle. Equipped with a holding means, a plurality of cutting blades for cutting aquatic plants such as aquatic plants and seaweeds are attached to the conveyor at predetermined intervals, and the vessel is provided with a storage tank for storing the cut aquatic plants transported by the conveyor. An aquatic plant removal work boat characterized by. 2. The aquatic plant removing work vessel according to claim 1, wherein a roller for grounding to the water bottom is provided at the tip of the conveyor. 3. The aquatic plant removing work vessel according to claim 1, wherein a rear portion of the conveyor can rotate independently of a front portion of the conveyor from a rotation axis which is a rotation center of the conveyor. 4. The aquatic plant removing work vessel according to claim 1, wherein the conveyor is a net conveyor. 5. The aquatic plant removing work vessel according to claim 1, wherein the hull is a catamaran, and a conveyor is rotatably attached in the middle of the catamaran. 6. The cutting blade has a sawtooth shape.
5. An aquatic plant removing work vessel according to any one of 5 above.