JPH0712265B2 - Equipment for removing miscellaneous seaweed in the seabed - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing miscellaneous seaweeds in the seabed, which is suitable for removing shellfish, algae, etc., which hinder the growth of seaweed, especially kelp, from fish reefs and rocks.

[0002]

2. Description of the Related Art Generally, in kelp fishing, the spores that flow along the ocean current adhere to fish reefs and rocks, and the grown kelp is collected after two years. It is necessary to remove existing shells, algae, etc. (hereinafter referred to as miscellaneous seaweeds, etc.) to facilitate the attachment of vesicular species.

Therefore, as a conventional method for removing miscellaneous seaweed, etc., a method of attaching a chain to a self-propelled ship to drag the seabed, a method of blasting rock underwater with gunpowder to form a new rock surface, and a hydraulic excavator as a work table. It is installed on a ship and the claws of a bucket are used to scratch the rock surface.

Further, from the application of Japanese Patent Application No. 1-318638, there is known a fish reef cleaning machine in which a metal brush is radially projected on a pot-bottom drum attached to the tip of a rotating device.

[0005]

In the method of towing a chain among the above-mentioned prior arts, when the towing ship is small, the chain is often caught on a rock and cannot be towed. There is a drawback that the work efficiency is low, and conversely, in the case of a large towing boat, there is a drawback that the range of use is limited in the kelp fish reef with many shallow waters.

[0006] Further, the method using the explosive powder has drawbacks that it is costly for large-scale work and is accompanied by danger.
Further, the method using the claws of the bucket has the drawbacks that the removal work cannot be carried out sufficiently because it is done by groping, and the work efficiency is poor.

Further, in the fish reef cleaner, the metal brush hitting the bedrock is bent, so that a sufficient removing effect cannot be exhibited, and the cleaning is carried out by the same method as the method using the bucket claw. In addition, there is a drawback that it is impossible to surely scrape the uneven rock surface.

The present invention has been made in view of the above-mentioned drawbacks of the prior art. In the seabed, the surface of fish reefs and rocks can be scraped off without being caught and the seaweeds can be reliably removed. An object is to provide a device for removing seaweed and the like.

[0009]

In order to solve the above-mentioned problems, the present invention is rotatably supported by the arm tip of a working machine and a liquid-tight motor chamber is formed inside. A bucket, a drive motor located inside the motor chamber and provided in the bucket, the drive shaft protruding outside the bucket, and a chain attached to the tip of the drive shaft and rotationally driven by the drive motor. The bucket comprises a support body and a chain portion for removing seaweed and the like having a plurality of swivel chains, each base end side of which is spaced apart in the circumferential direction and is attached to the chain support body, and the front end side of which is a free end. The length of the swivel chains is set so that the free end side of each swivel chain is located on the outer peripheral side of the arc-shaped trajectory drawn by the tip of the bucket when the swivel chain is rotated.

[0010]

[Operation] The bucket is rotated, and the tip of the bucket is brought into contact with the fish reef and the rock to position the height of the bucket. In this state, the bucket is rotated to direct the seaweed removal chain portion downward, and the drive motor rotates the seaweed removal chain portion.

The miscellaneous seaweed entangled with the chain portion is unraveled and removed by rotating the chain portion in the reverse direction.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

In the drawings, reference numeral 1 denotes a hydraulic excavator as a working machine. The hydraulic excavator 1 constitutes a shovel main body 2 and a front of the shovel main body 2, and a boom 3 whose base end side is axially supported by the shovel main body 2. And an arm 4 pivotally supported at the tip of the boom 3.

Reference numeral 5 denotes a bucket pivotally supported at the tip of the arm 4. Reference numeral 6 denotes a bucket body that constitutes the bucket 5, and the bucket body 6 has left and right side plates 6A, 6A.
And a bottom plate 6B which is formed in a substantially U shape and whose widthwise ends are fixed to the side plates 6A by welding means, and a plurality of claws 6C, 6C, ... 1 in the figure
(Only one piece is shown), and a shaft insertion hole 7 is formed in the lowermost portion of the bottom plate 6B. Reference numeral 8 indicates a sealing plate provided on the upper side in the bucket body 6, and a liquid-tight motor chamber 9 is formed in the bucket 5 by the sealing plate 8 and the bucket body 6.

The bucket 5 having the above-described structure is pivotally supported by the arm 4 via a mounting bracket 10 fixed to the rear outer surface of the bottom plate 6B, and rotatable by a bucket cylinder 12 via links 11, 11. Has become.

Reference numeral 13 denotes a rotary drive device, which is a hydraulic motor 14 and an output shaft 1 of the hydraulic motor 14.
The drive shaft 15 is splined to the drive shaft 4A and a cylindrical body having an inner flange 16A and an outer flange 16B. The drive shaft 15 is externally fitted to the drive shaft 15 via radial bearings 17 and the hydraulic motor 14 is attached via bolts. The support cylinder 16 is fastened to the support cylinder 16.

Then, the rotary drive unit 13 has an inner flange 16A fastened to a support plate 18 fixed in the bucket body 6 and an outer flange 16B fastened to a bottom plate 6B of the bucket body 6 via a seal member 19. Thus, the hydraulic motor 14 is positioned in the motor chamber 9, and the support cylinder 16 is attached to the bucket 5 in a state in which the tip end side of the support cylinder 16 is projected outward through the shaft insertion hole 7.

Reference numeral 20 denotes a chain mounting portion attached to the tip end side of the drive shaft 15, the chain mounting portion 20 being keyed to the drive shaft 15 and having a nut 20A.
Disc-shaped connecting member 20B fastened to the connection member 2 and the connecting member 2
It is composed of a chain turntable 20C bolted to 0B, and five chain hooks 20D, 20D, ... .

Reference numeral 21 denotes a chain portion for removing marine seaweed or the like suspended from the chain mounting portion 20, and the chain end portion 21 of the chain portion 21 for removing seaweed seaweed or the like has the chain hooks 20 at the base end side.
Five swivel chains 21A, 21A, ...
The intermediate connecting chains 21B, 21B, ... Which connect the intermediate portions in the longitudinal direction of A to each other, and the distal connecting chains which are removably engaged with the distal ends of the swiveling chains 21A and connect the swiveling chains 21B to each other. 21C, 21C, ...
.. and the weight 2 attached to the tip of each turning chain 21A
It is composed of 1D and.

Here, the length L of each turning chain 21A
Is the swing chain 2 which is 400 to 500 mm or more outward from the arc-shaped trajectory drawn by the claw 6C when the bucket 5 is rotated.
It is set so that the free end side of 1A is located. (Fig. 1
reference).

Incidentally, as shown in FIG. 3, the seaweed removal chain portion 22 is formed below the intermediate connecting chain 21B, and each swivel chain 21A is connected with a forked chain 22A instead of the weight 21D. You may.

The apparatus of this embodiment is constructed as described above,
Next, the operation will be described.

At the time of work, the hydraulic excavator 1 in which the embodiment apparatus is mounted on the arm 4 is mounted on the traveling carriage A as shown in FIG. 4 or mounted on the deck of the work carrier B as shown in FIG. And move to the work site.

When starting the work, first, the condition inside the seabed is investigated, and if the rock is smooth, each swing chain 21A
A chain 21 for removing undesired seaweed or the like having the weight 21D and the tip side connecting chain 21C attached thereto is connected to the chain attaching portion 20. On the other hand, if the bedrock is in a state of severe unevenness, the chain 22 for removing miscellaneous seaweed and the like to which the forked chain 22A is attached is connected to the chain attachment portion 20.

After that, the boom 3 and the arm 4 are lifted and lowered, and the bucket cylinder 12 is operated to operate the bucket 5.
Is rotated to make the claw 6C face downward, and the bucket 5 is positioned by abutting on the fish reef or rock.

Next, the bucket 5 is reversed so that the claws 6C face upward, and the chain portion 21 for removing seaweeds and the like is hung as shown in FIG. 4 and FIG. Is driven to rotate the chain portion 21.
As a result, each swivel chain 21A picks up seaweed and catches seashells from the rocks or crushes them.

At this time, by connecting the distal end side connecting chain 21C to each swivel chain 21A and providing the weight 21D, it is possible to prevent the swivel chain 21A from being lifted up by the centrifugal force, and each swivel chain 21A has a rock surface. The surface of the fish reef can be reliably scraped off.

When the chain portion 22 for removing miscellaneous seaweed in which the bifurcating chain 22A is attached to each swivel chain 21A is used, the inside of the recessed portion of the rock can be scraped off.

The seaweeds removing the seaweeds and the like are entangled in the chains 21, 22 by unwinding and removing the seaweeds by rotating the chains 21, 22 in the reverse direction. At this time, it can be easily removed especially by rotating in the reverse direction in the air.

The apparatus of the present embodiment is as described above, and since the hydraulic motor 14 is housed in the motor chamber 9 which is liquid-tightly provided inside the bucket 5, it is possible to prevent contamination of seawater due to leakage of lubricating oil and the like. It is possible to prevent rusting of the hydraulic motor 14 due to seawater.

Further, the tip side of the turning chain 21A is 400 to 5 from the radius R of the arc-shaped locus drawn by the claw 6C of the bucket 5.
Swing chain 2 so that it is positioned on the outer circumference side by more than 00 mm
Since the length L of 1A is set, it is possible to prevent the chain attachment portion 20 from colliding with a fish reef or rock during the work.

[0032]

Since the present invention is constructed as described above in detail, it has the following effects.

(A) Since the bucket is provided with the drive motor and the chain for removing the seaweeds and the like which is driven to rotate by the drive motor, the chain for removing the seaweeds and the like can be positioned by the bucket. The surface can be reliably scraped off to efficiently remove seaweeds and the like.

(B) Since the swivel chain which can be deformed is used, the swivel chain does not get caught on a fish reef or rock, and the removal work can be smoothly performed. .

(C) Removal of miscellaneous seaweed, etc. Since miscellaneous seaweed entangled in the chain part can be easily removed by reversing the chain part, the workability is excellent.

(D) Since the drive motor is arranged in the liquid-tight motor chamber provided in the bucket, it is possible to prevent contamination of seawater by lubricating oil and the like, and conversely to prevent rusting of the drive motor due to seawater, and durability. It can be an effective device.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an apparatus for removing seaweed in the seabed according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a drive device that constitutes an example device.

FIG. 3 is a partial enlarged view of a chain for removing miscellaneous seaweed and the like using a forked chain.

FIG. 4 is an explanatory diagram showing a working state using the apparatus of the embodiment.

FIG. 5 is an explanatory view showing another working state using the apparatus of the embodiment.

[Explanation of symbols]

 4 Arms 5 Bucket 9 Motor Room 14 Hydraulic Motor 15 Drive Shaft 20 Chain Attachment Part 21 Seaweed Removal Chain Part 21A Swing Chain

Claims (1)

[Claims] 1. A bucket in which a liquid-tight motor chamber is formed inside is rotatably supported by the arm tip of a working machine, and the bucket is located inside the motor chamber.
A drive motor having a drive shaft protruding outside the bucket;
A chain support attached to the front end of the drive shaft and rotationally driven by the drive motor, and a plurality of base ends that are spaced apart in the circumferential direction and are attached to the chain support and the front end is a free end. A chain for removing miscellaneous seaweed and the like having two swirling chains, and the swiveling chains are arranged so that the free end side of each swiveling chain is located on the outer peripheral side of the arc-shaped trajectory drawn by the tip of the bucket when the bucket is rotated. A device for removing seaweeds in the seabed with a set length.