JP2533695Y2 - Fishway equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishway device for allowing fish to go up and down.

[0002]

2. Description of the Related Art In recent years, in order to dam rivers, rubber dams which have advantages such as easy installation and easy falling down in floods are often used. And
In this case, a plurality of rubber weirs having different heights may be prepared and arranged in order from the upstream side in order to maintain the natural ecosystem by allowing fish to go up and down.

[0003]

[Problems to be Solved by the Invention] By the way, when fish go up, there is a habit that they gather in places that are easy to ascend, but as mentioned above, it is possible to go up and down fish by preparing a plurality of rubber weirs. In this device, each rubber weir is set to the length of the entire width of the river. For this reason, the cost was high in securing the fishway, which was uneconomical.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fishway device which can be reduced in cost.

[0005]

According to the present invention, in order to achieve the above-mentioned object, the present invention is arranged in a substantially gutter-like shape with an air chamber, which is disposed above the air chamber, and is partially bridged to the opposing side wall. A plurality of rubber fishway block bodies, each having a different height from the bottom of the air chamber to the notch, and a plurality of rubber fishway block bodies each including a passage portion provided with a plate-shaped partition formed with a notch for fish passage. The fishway block body is characterized in that the air chambers communicate with each other, and the fishway block bodies are connected in the same order of height from the bottom of the air chamber to the notch.

[0006]

According to this structure, the fish goes up and down through the fishway according to the habit of the fish without making the width of the fishway to be the entire width of the river.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fishway device according to an embodiment of the present invention; FIG.

In the figure, a bag-shaped rubber weir 2 is laid across a river 1. An air supply / discharge mechanism 3 including a compressor or the like is connected to the inside of the rubber weir 2 to supply air to the inside of the rubber weir 2 or to discharge air from the inside of the rubber weir 2. You can stand and fall.

In the figure, reference numeral 4 denotes a fishway of a predetermined width provided on the rubber weir 2. There are a plurality of fishways 4 (3 in this embodiment).
) Rubber first, second, and third fishway block bodies 5,
6, 7 are connected as described later.

The first, second and third fishway block bodies 5,
6 and 7 are air chambers 5a, 6a and 7a, respectively.
a, 6a, 7a, approximately gutter-shaped passages 5b, 6
b, 7b. At the downstream (in the direction of arrow A in FIG. 3) of the side walls 5c, 6c, 7c provided opposite to the passages 5b, 6b, 7b, plate-like partitions 5d, 6d,
7d is provided cross-linked. Above the partitions 5d, 6d, 7d, notches 5e, 6e, 7e for passing fish are formed. By providing notches 5e, 6e, 7e for fish passage, passages 5b,
6b and 7b can store water up to the fish passage notches 5e, 6e, and 7e, and can easily go up and down through the fish passage notches 5e, 6e, and 7e. .

In this case, the plurality of first, second, and third fishway block bodies 5, 6, 7 are respectively provided with air chambers 5a, 6a, 7a.
The height H from the bottom of the to the fish passage notches 5e, 6e, 7e is different. The plurality of first, second, and third fishway block bodies 5, 6, 7 are arranged in order of the height H, and the side walls 5c, 6c, 7c of the adjacent passage portions 5b, 6b, 7b are arranged.
Are connected to each other by a fastening member 8 such as a button clamp to form an integral structure. The passage portion 5b of the first fishway block 5 having the maximum height H is provided with an overpass portion 9 extending upstream beyond the rubber weir 2. Air chambers adjacent to the first, second, and third fishway block bodies 5, 6, 7
5a, 6a and 7a are connected by an air hose 10 and communicate with each other. The first having the overpass section 9
The air chamber 5a of the fishway block body 5 is communicated with the inside of the rubber weir 2 using an air hose 11, and the air chamber on the fishway 4 side is provided.
5a, 6a, 7a and the inside of the rubber weir 2 are connected.

In the fishway device configured as described above, a fishway 4 having a predetermined width is disposed in a part of the rubber weir 2, and fish goes up and down through the fishway 4. And
The fishway 4 does not have to be set to the length of the entire width of the river 1 for the fish to go up and down. For this reason, the size of the device is reduced as compared with a device provided with a plurality of rubber weirs having a length extending over the entire width of the river, and thus the cost can be reduced.

Further, by operating the air supply / discharge mechanism 3, the rubber weir 2 rises and falls due to the supply and discharge of air, and in conjunction with this, the supply and discharge of air to and from the fish path 4 are performed, and the fish path 4 is discharged. Can stand and fall. Thus, the air supply / discharge mechanism 3 used for standing up and down of the rubber weir 2
Can also be used for standing up and down of the fishway 4, and the cost of the entire apparatus can be reduced accordingly.

Further, with the fishway 4 lying down as described above, the fishway 4 can be detached from the rubber weir 2 and stored in a predetermined storage location. For this reason, the storage property is good. In the above embodiment, the fishway device integrally formed with the rubber weir 2 has been described as an example, but the fishway device may be configured to be used alone. Further, in the above embodiment, the case of using the rubber weir 2 has been described as an example, but it goes without saying that it may be used for a weir made of another material.

[0015]

[Effects of the Invention] Since the present invention is a fishway device configured as described above, the fish runs up through the fishway due to the habit of the fish without making the width of the fishway the entire length of the river. Since it descends, it is possible to make the fishway smaller by the shorter width of the fishway compared to the device that goes up and down the fishway by providing a plurality of rubber weirs that extend over the entire width of the river, The cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a fishway device according to an embodiment of the present invention.

FIG. 2 is a side view schematically showing the fishway device.

FIG. 3 is a plan view schematically showing the fishway device.

[Explanation of symbols]

 5 First fishway block 5a Air chamber 5b Passage 5d Partition 5e Notch for fish passing 6 Second fishway block 6a Air chamber 6b Passage 6d Partition 6e Notch for fish passing 7 Third fishway block 7a Air chamber 7b Passage 7d Partition 7e Notch for fish passage

Claims (1)

(57) [Scope of request for utility model registration] 1. A passage having a generally gutter-like shape with an air chamber, arranged above the air chamber, and provided with a plate-like partition partly formed with a notch for fish passage by bridging the opposing side walls. And a plurality of rubber fishway block bodies each including a plurality of fishway block bodies having different heights from the bottom to the cutout of the air chamber, the plurality of fishway block bodies communicating with each air chamber, and A fishway device characterized by being connected in the same height order from the bottom to the notch.