JPH07247538A - Lift type fish way device - Google Patents

Abstract

PURPOSE:To provide a general purpose fish way device which is installed to a river crossing structure and which is short in its horizontal level and immune to the effect of the difference between the water levels of upstream and downstream. CONSTITUTION:A frame 11 is divided into an upper block, an intermediate block and a lower block and they are pin-jointed with each other. The intermediate block 14 is installed to a river crossing structure 9 while the upper block 13 is rotated so as to fall down on the upstream side and the lower block 15 is rotated so as to position in water on the downstream side. A housing space which opens its upper part to house fishes or a carrier mechanism 12 having a carrier vessel is installed to the frame 11 where a drive device 26 is installed so as to lift up and down the housing space or the carrier vessel. Fishes going upriver on the downstream side are housed in the housing space or the carrier vessel so that the housing space or the carrier vessel may be lifted on the upstream side. This construction makes it possible to discharge fishes from an upstream side reservoir and install them to other river crossing structures 9 by changing the length of the intermediate block 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating type fishway device which is installed in a river crossing structure having a high head difference between upstream and downstream water levels in order to enable fish to run upstream.

[0002]

2. Description of the Related Art Recently, from the viewpoint of creating a living environment rich in water and greenery, it has been widely demanded to create a beautiful and water-based environment that can coexist with an ecosystem and a good waterside space. As part of this, the implementation of a river where fish can live is being considered for designated water systems under administrative guidance.

In a river crossing structure (dam, weir, etc.), a fishway is provided in order to facilitate fish run-up. In general, when the weir head is low, a fixed staircase fishway made of concrete is provided. For a river crossing structure having a high head, a lifting type fishway device 1 can be used as shown in FIGS. 24 and 25. These are configured to collect the fish in the downstream water channel 2 and place them in the storage box 3, and the drive box 4 conveys the storage box 3 to the upstream water channel 5 (or the reservoir of the dam) to release the fish therein.

In addition, as shown in FIGS. 26 (a) and 26 (c), a pit into which a fish swims is formed in the downstream waterway 2 (see FIG. 26c), and the storage box 3 is moved by a cable 6 provided in the air. Of the cableway type fishway device 8 of which the fish in the pit is scooped up by the storage box 3 and transported in the air and discharged from the downstream to the reservoir 7 of the dam (see FIG. 26 (b)). There is also use. In addition, if there is a high head with the upstream side, the fishway waterway of the staircase type fishway may be extended in a spiral shape, or if the site area is large, the waterway may be bent in a zigzag shape to form a long gentle slope. Some have been installed.

[0005]

However, if a staircase type fixed fishway is installed in a dam or the like having a high head, the horizontal distance becomes long, the civil engineering cost increases, and the installation space must be secured. . further,
Since the lifting type fishway device 1 described above is a fixed type, it is necessary to install it in accordance with the height of each dam, and it may be affected by fluctuations in water level.

An object of the present invention is to provide a lifting type fishway device which can cope with the above installation conditions.

[0007]

In order to achieve the above-mentioned object, the present invention divides a frame, which is mounted on the downstream side of a river crossing structure in the vertical direction, into upper, middle and lower blocks, respectively. Pin-joined, the upper and lower blocks are provided rotatably in the front-rear direction through the pins, and the intermediate block is fixed to the river crossing structure or movably supported in the lateral direction, A transport mechanism having an accommodation space for transporting fish or a transport container, which is wound between the ends of the upper and lower blocks and having a container for transporting the fish, and a drive device for rotationally moving the transport mechanism are provided. Is characterized by.

In the above apparatus, the length of the intermediate block is adjustable. The conveyor mechanism is a belt conveyor or roller chain. further,
It is characterized in that running water and priming pipes for sprinkling water are provided on the surface of the transport mechanism, and a net covering the surface of the transport mechanism is provided.

[0009]

Since the lifting fishway device according to the present invention is configured as described above, when the middle block of the frame is fixed to the river crossing structure, the upper block is rotated and the surrounding area of the river crossing structure is rotated. It can be aligned with the civil engineering structure and tilted to the upstream side, and the lower block can be rotated and positioned in the downstream water. Then, the run-up fish on the downstream side can be stored in the storage space or the transport container, the storage space or the transport container can be raised to the upstream side along the frame, and the fish can be discharged to the upstream reservoir. When the intermediate block is movable, it can be retracted to a predetermined position during flood or repair.

The intermediate block can be expanded and contracted and fixed according to the height of the river crossing structure,
If either a belt conveyor or roller chain is used, install a matching case. The priming is effective in guiding and capturing the fish coming up to the container, and it is replenishment that makes the water flow down from the upper block,
It will maintain the activity of the fish. In addition, the net can protect fish on the way up from birds.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an elevating type fishway device 10 vertically provided along a downstream side wall surface of a river crossing structure 9. A vertically structured frame 11 and a belt conveyor type transport mechanism supported by the frame 11. It has 12 and. In addition, the target river crossing structure 9 has a high head.
7 to 7 show the main parts thereof. Also,
The structure for moving the lifting fishway device 10 in the river transverse direction will be described later.

The frame 11 is divided into three blocks, an upper block 13, an intermediate block 14 and a lower block 15, and the intermediate block 14 is fixed to the downstream side wall surface by a supporting member 16 arranged in the upper and lower portions. The length of the intermediate block 14 can be easily changed according to the height of the river crossing structure 9. Also,
Each of the divided joints of the frame 11 is connected by a pin 17 having a river transverse direction as an axis, and the upper block 13 and the lower block 15 are rotatable with respect to the intermediate block 14. An adjustment connecting culm 18 is laid between the upper block 13 and the intermediate block 14 with a pin 17 interposed therebetween, and an adjusting connecting culm is interposed between the intermediate block 14 and the lower block 15 with a pin 17 interposed therebetween. Eighteen are hung. A bird net 19 is attached to the surfaces of the upper block 13 and the intermediate block 14.

The upper block 13 and the lower block 15 are curved in the vicinity of the connecting portion of the intermediate block 14 and their tip ends are directed toward the water surface. And the lower pulley 21 are attached. In addition, as shown in FIG. 5, the curved portion is formed in the lower block 15 by the bend roller.
22 is supported by bearings 22a, and coaxial large and small disc rollers
23 and 24 are rotatably supported by bearings 23a. The same applies to the curved portion of the upper block 13.

The transport mechanism 12 has an endless base belt 25 mounted between the upper pulley 20 and the lower pulley 21 of the frame 11, and a drive device 26 for moving the base belt 25. A space for accommodating fish is required on the surface of the base belt 25, and as shown in FIG. 8 and FIG. 9A, a horizontal coffin 27 is attached to the base belt 25 and side walls 28 are provided on both sides thereof. The horizontal shaft 27 may be the same as the inclination of the base belt 25 as shown in FIG. 9B, or may be vertical to the surface as shown in FIG. 9C.

As shown in FIG. 10, the base belt 25
A box 29 with an open top may be attached to the
It is preferable to insert a cushioning material 30 between the base belt 25 at the bottom of 29. At this time, the side wall 28 is to be removed. In addition to this, when installing the roller chain 31 instead of the base belt 25 as shown in FIG. 11, the box 29 is mounted between the left and right roller chains 31, and the upper pulley 20 guides the sprocket and the lower pulley 21 guides. Change to rails. A guide rail is provided instead of the curved portion where the disc roller 23 and the bend roller 22 are installed.

By the way, in the lifting type fishway device 10 shown in FIG. 1, a dustproof wire net 32 and a guide wall 33 are provided on both sides of the lower block 15.
Is provided (see FIG. 6), and a priming pipe 34 is provided at the upper end of the guide wall 33 to discharge water from the end of the lower block 15 (see FIG. 7). The priming water pipe 34 has a priming water regulating valve 35, and an intermediate block 14 is provided through a flexible pipe 36.
Is connected to the pipe 37 provided along the line. In addition, a water spray adjusting valve 38 branched from a pipe 37 is provided in the lower portion of the intermediate block 14 to adjust the flow rate (see FIG. 4). This pipe 37 penetrates the upper part of the river crossing structure 9 and opens into the water of the reservoir 7.

Further, as shown in FIGS. 1 and 3, a mounting table 39 is also attached to the upper block 13, and a drive unit 26 is provided.
A pumping pump 40 for replenishing water is also installed. The drive unit 26 has an electric motor 41 and a speed reducer 42, and the shaft of the speed reducer 42 is a sprocket 43 and a chain that are installed coaxially with the upper pulley 20.
Connected at 44. Water pump 40 has a water supply adjustment valve
45 is connected and water can be discharged from above the frame 11.

The lifting type fishway device 10 thus constructed is
The intermediate block 14 is fixed to the wall surface, the end of the upper block 13 is adjusted to the water level of the reservoir 7 by operating the adjustment connecting culm 18, and the end of the lower block 15 is adjusted to the downstream water level. The adjustment connecting culm 18 can be operated to position and fix it. Alternatively, the inclination of the lower block 15 can be set to an effective angle for the fish run-up to adjust to an appropriate flow velocity.

Next, after fixing both blocks, the water stored upstream of the river crossing structure 9 is guided to the upper part of the lower block 15 through a pipe 37 as a means for guiding and assembling fish.
The amount of water discharged is adjusted by the water spray adjusting valve 38, and the water is discharged to the fishway waterway to create a flow in the waterway. Further, the priming water regulating valve 35 is appropriately opened to discharge the priming water from the priming water pipe 34 from both sides of the inlet portion of the fishway channel.

On the other hand, when the transport mechanism 12 is started, the base belt 25 is moved, and the horizontal rod 27 moving at a low speed from the downstream side is used to collect fish. When the horizontal rod is raised in sequence, the base belt 25 and the side wall 28 are moved. , The fish on the downstream side is accommodated together with water in the accommodating space surrounded by the side wall 27. When the horizontal board 27 rises, the water accumulated in the storage space leaks. In addition, since the base belt 25 and the horizontal shaft 27 incline near the top of the upper block 13, the water depth for accommodating fish becomes shallow, but the fish are discharged together with the water into the reservoir 7. The bird net 19 protects the fish from being attacked by birds during transportation.

Near the top of the upper block 13, the side wall 27 is inclined as described above to cause water leakage. For this reason, the pump 40 is operated to open the water replenishment adjusting valve 45 appropriately to replenish water from the top of the upper block 13. To prevent the fish from weakening within the storage space. When the crossing angle between the base plate 25 and the side wall 27 is a right angle (see FIG. 9C), there is little water leakage from the contact portion between the side wall 28 and the side wall 28, and an independent container 29 is attached to the base plate 25. When installing, pumping pump 40 is not provided because water leakage is small.

FIG. 12 shows an elevation fishway device 10 in which an intermediate block 14 is inclined with respect to a river crossing structure 9.
Is. The intermediate block 14 is obliquely fixed by a support member 46 assembled to the river crossing structure 9, and the positions of the upper block 13 and the lower block 15 are adjusted by extending the adjustment connecting culms 18. In addition, the mounting table provided on the upper block 13
Install 39 so that it remains horizontal (see Figure 14).
Note that FIG. 13 shows a structure in which the end portion of the upper block 13 is viewed from above.

Next, with reference to FIGS. 15 to 21, a movable lifting fishway device 47 in which the intermediate block 14 is provided vertically will be described. Guide rollers 48 are attached to the upper and lower parts of the intermediate block 14, and a running rail provided horizontally on the river crossing structure 9.
49, and a running rail 50 provided above it. In addition, a traveling rail 51 is laid in the river crossing direction, and wheels are provided on a support member 52 that supports the intermediate block 14.
53 is on board. The traveling rail 51 is made continuous by disposing the removal rail 54 at the installation location of the lower block 15. Further, the support member 52 is provided with a step base 55, a handle 56 is arranged, the wheel 53 and the handle 56 are connected by a chain 57, and the wheel 53 is driven by the rotation of the handle 56.
The frame 11 may be moved by a motor drive.

As shown in FIG. 18, the river crossing structure 9 is provided with a fixed position of the lifting fishway device 47, and the height of the top of the river crossing structure 9 is lowered one step in the central portion 9a. A recess 9b for accommodating the lower block 15 is formed below it. A lifting fishway device installed in this position
When moving 47, move the upper block 13
The lower block 15 can be lifted by 18 and the lower block 15 can be lifted by the adjusting connecting culm 18 to run without contact with the floor surface on the downstream side of the bank.

22 and 23 show a staircase type fishway 58.
The staircase type fishway 58 is made of concrete attached to the dam 59 and leads to a river channel directly below the dam 59. A rest pool 60 is provided at the tip of the staircase type fishway 58, and the lifting type fishway device 10 is provided between the water passage 61 at the upper part of the dam and the rest pool 60. A water control gate 62 is provided on the reservoir side of the water passage 61. The upper block 13 of the lifting fishway device 10 is hung on the downstream wall 61a of the water passage 61, and the tip of the lower block 15 is in the break pool 60. A priming water channel 58a installed parallel to the staircase type fishway 58 communicates with the resting pool 60 so that some of the water can be taken and the running water is discharged near the entrance of the staircase type fishway 58. ing. In this way, when the height of the dam 59 is large, the staircase type fishway 58 is not extended for a long time, and the lifting type fishway device 10 allows fish to go up without swimming long distances.

As described above, the conventional stairway type fishway
The waterway length of 58 makes it possible to reduce the occupied space by shortening the horizontal distance by using the lifting device, and makes it easy to install in the existing river crossing structure 9. Civil engineering costs and construction costs can be reduced. In addition, frame 11 consists of upper block 13 and intermediate block
Since it is divided into 14 and lower block 15, it is only necessary to fix the intermediate block 14 to the wall surface, and it is sufficient to bend the upper block 13 and the lower block 15 to the river crossing structure 9 and adjust the inclination, so the installation work It's easy. Further, by appropriately lengthening the intermediate block 14 having a simple structure, the frame 11 can be attached to the river crossing structure 9 having a height.

[0027]

The present invention is constituted as described above,
It can be installed without taking up much space in the existing river crossing structure, and it can be adjusted even if the height of the river crossing structure is high or the height is different. Therefore, it is versatile and can reduce production costs. Therefore, it is possible to attach the lifting type fishway device of the present invention to many river crossing structures, which contributes to fish run-up.

[Brief description of drawings]

FIG. 1 is a side sectional view of a lifting fishway device according to an embodiment of the present invention.

FIG. 2 is a front view of the lifting fishway device shown in FIG.

FIG. 3 is a partial plan view in the direction of arrow A shown in FIG.

FIG. 4 is a partial cross-sectional view taken along arrow B shown in FIG.

5 is a partial cross-sectional view taken in the direction of arrow C shown in FIG.

6 is a partial cross-sectional view taken in the direction of the arrow D shown in FIG.

FIG. 7 is a partial plan view in the direction of arrow E shown in FIG.

8 is a cross-sectional view of the belt portion of the transport mechanism of the lifting fishway device shown in FIG.

9 is a side sectional view of the belt portion shown in FIG.

FIG. 10 is a side sectional view of another structure of the belt portion of the embodiment.

11 is a side view of essential parts showing a mechanism using the belt part shown in FIG.

FIG. 12 is a side view showing a state in which the lifting type fishway device of the embodiment is installed while being inclined.

13 is a top view showing a tip portion of an upper block of the lifting fishway device shown in FIG.

FIG. 14 is a front view of the main parts of the lifting fishway device shown in FIG.

FIG. 15 is a side view of a vertically movable fish path device according to an embodiment.

16 is a side view of the upper portion of the lifting fishway device shown in FIG.

FIG. 17 is a side view of the lower portion of the lifting fishway device shown in FIG.

18 is a front view of a river crossing structure equipped with the lifting fishway device shown in FIG.

19 is a top view of the lifting fishway device shown in FIG. 15. FIG.

20 is a front view of the lower portion of the lifting fishway device shown in FIG. 15. FIG.

21 is a side view of the lower portion of the lifting fishway device shown in FIG. 15. FIG.

FIG. 22 is a side sectional view of a river crossing structure equipped with the lifting fishway device of the embodiment in association with the staircase fishway device.

23 is a front view of the river crossing structure shown in FIG. 22. FIG.

FIG. 24 is a perspective view of a conventional elevator fishway device.

FIG. 25 is an explanatory diagram of another conventional elevator fishway device.

FIG. 26 is an explanatory diagram of a conventional ropeway type fishway device.

[Explanation of symbols]

 9 River crossing structure 11 Frame 12 Transport mechanism 13 Upper block 14 Middle block 15 Lower block 17 Pin 26 Drive device

Claims (5)

[Claims] 1. A frame structure to be installed on the downstream side of a river crossing structure in the vertical direction is divided into upper, middle and lower blocks, and the pins are joined to each other to connect the upper and lower blocks to the pins. It is rotatably provided in the front-rear direction via the intermediate block and is fixed to the river crossing structure or movably supported in the lateral direction, and is wound between the end portions of the upper and lower blocks to form a fish. An elevating type fishway device, characterized in that a conveying mechanism having an accommodating space having an upper opening for accommodating a container or a conveying container is provided, and a drive device for rotationally moving the conveying mechanism is provided. 2. The lifting fishway device according to claim 1, wherein the length of the intermediate block is adjustable. 3. The lifting fishway device according to claim 1, wherein the transport mechanism is a belt conveyor or a roller chain. 4. The lifting fishway device according to claim 1, wherein a pipe for running water and a priming water for sprinkling water is provided on the surface of the transport mechanism. 5. The lifting fishway device according to claim 1, further comprising a net covering the surface of the transport mechanism.