JPH0959965A - Hydraulic elevator type fish ladder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use hydraulic power for an elevator type fish ladder device, to correspond to ascending and descending fishes and to form a guide water flow in a natural flow. SOLUTION: Frames constituting ascending-descending paths 19, 20 are installed to a flow just under a dam 2, a guide tank 12 is mounted on the upper section of the descending path 20, a roller chain 17 is stretched rotatably over the ascending-descending paths 19, 20, and a rotary means P by the upper-lower level difference of flowing water is connected to the roller chain 17. A floor board 21 is arranged at a box-shaped center in the roller chain 17, a plurality of carrying vessels 9, in which vessels are formed on both sides, are set up at intervals, and a chute 26 for transport communicated with the guide tank 12 is fitted at the upper inversion place of the carrying vessels 9 while a shut-off valve 28 intermittently forwarding flowing water in the guide tank 12 into the descending path 20 is mounted. Since the roller chain 17 is moved by the rotary means P, the number of the carrying vessels 9 is reduced and intervals are taken at a large value, and the number of the carrying vessels 9 in a guide water channel is decreased and the disturbance and stagnation of a water flow are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transports upstream fish in a transport container to the upstream side of a river crossing structure constructed in a river,
Alternatively, the present invention relates to a hydraulic elevator fishway device that transfers descending fish to the downstream side, and vertically raises and lowers the transport container according to the height difference of the river crossing structure.

[0002]

2. Description of the Related Art Conventionally, by providing a river crossing structure in a river, the flow of water may be interrupted or a step with a large water level difference may be created, which prevents the movement of run-up fish and descending fish. The fish can go up and down. One of the things that can be done without power to move fish up and down is the staircase type fishway that uses the site area. This is one in which partition walls are sequentially arranged in the waterway of the fishway connecting the upstream and the downstream, and the water level difference of the river is divided by a plurality of partition walls so that the fish can jump and attempt to run upstream.

[0003] There is also a method in which a box for accommodating fish is hung by a wire and a cableway is used so that the box can be moved from the downstream side to the upstream side. Further, in a river crossing structure with a large water level difference, an elevator type fishway device is used in which a box for storing fish is moved vertically by an electric motor.

[0004]

However, in a river crossing structure having a large water level difference, an unpowered fishway device,
That is, if a staircase type fishway is to be attached, a problem that a large site area is required occurs. Also, when moving the box for storing fish using the cableway, the posture of the box can be made to be the same state during ascent and descent, and run-up fish and descending fish can be stored and transferred. The transfer drive device cannot be omitted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hydraulic elevator type fishway device in which the fishway is made vertical so that the installation area is reduced and the fish is run up and down without using a drive device. .

[0006]

In order to achieve the above object, the present invention provides a frame for constructing an ascending / descending passage immediately downstream of a river crossing structure having a vertical water level difference, and at the upper part of the frame. An induction tank for storing running water upstream of the river crossing structure is provided, and an endless connecting member extending upstream and downstream of the river crossing structure is supported by a guide rail in the ascending / descending passage to be rotatable. Provided, the rotating means by the difference in the water level between the flowing water is connected to the connecting member, the connecting member is a transport container in which a floor plate is arranged in the center of a box and containers are formed on both sides thereof, and the container opening is connected to the connecting container. A plurality of mounting chutes are provided at intervals according to the moving direction of the members, and a transfer chute that communicates with the guiding tank is provided below the position where the transport container rotates in the upper inverted position of the connecting member, and the guiding tank is provided. Running water Characterized in that a closure valve for feeding intermittently in descending passage.

In the above structure, a water storage channel extending downstream in the lower part of the frame is provided, and a guide rail of the connecting member is provided along the water storage channel.

[0008] Further, a guide water channel is provided facing the most downstream end of the water storage channel, and a priming pipe is arranged, and a bottom closing plate connecting the guide water channel and the water storage channel on the floor surface extension, the bottom closing plate. It is provided so as to be rotatable around the side connected to the guide water passage as a shaft.

Further, the ascending and descending passages of the frame are framed by a main column made of steel pipe, the upper part of the main column is communicated with the upstream water channel side, and the lower part of the main column is connected to the running water reservoir and the priming pipe. It is characterized by that.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In addition to a fixed fishway device, a fishway device provided on a dam or a weir may be attached during the run-up period and removed at other times. This device is attached to an existing dam.
It has a structure that can be easily removed. Further, since there is not much room for installation to be newly installed, it is preferable that it does not take up space, and the vertical type is preferable. Also, each time,
The terrain is used to convert the water level difference into a driving force so as not to require much maintenance cost. In addition, this device targets run-up fish and descending fish, and the transport container is given its respective functions.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The overflow weir and the partition wall of the fishway canal that allows fish to run up have a small water level difference, but as shown in Figs. 1 to 3, a river crossing structure that blocks the canal 1 (hereinafter referred to as a dam). The elevator type fishway device 3 is used as an example for the water level difference of 2. The frame that constitutes the elevator fishway device 3 includes an upper block 4 that communicates with an upstream water channel, an intermediate block 5 that has a substantially vertical structure, and
It is divided into lower blocks 6 that constitute a water storage channel 7 that extends to the downstream side, and flanges 8 at the ends of the blocks are joined together by bolts to be integrated. Then, the transport container 9 moves in an annular shape within the frame and is moved up and down to transport the run-up fish / falling fish.

The fishway device 3 is provided immediately downstream of the dam 2, and the upper block 4 communicates with the upper part of the dam 2. On the revetment along the downstream water channel of the dam 2, a recess is formed as shown in FIG. Then, the downstream side of the lower block 6 joins the downstream water channel.

As shown in FIG. 2, the dam 2 is provided with a through water channel 10 having an open concrete wall at its upper part, and a water control gate 11 at its upstream opening. A guide tank 12 is provided at the downstream opening of the through water channel 10 facing the upstream side end of the upper block 4, and a sediment pool 13 is formed in one part of the guide tank 12. The sediment pool 13 is made of steel or a wooden block. The corner-removing gate 14 is provided.

As shown in FIGS. 1 and 3, the lower block 6
An anchor 15 is erected on the downstream side of the revetment in which is stored, and a suspension rod 16 hanging from the anchor 15 is connected to a downstream side portion of the lower block 6 so that its length can be adjusted. Therefore, the inclination and posture of the lower block 6 can be set by adjusting the location where the lower end of the intermediate block 5 is connected to the flange 8 and adjusting the length of the suspension rod 16.

Inside the frame, a plurality of transport containers 9 are connected at intervals to a pair of endless roller chains (coupling members) 17, and a frame made of steel pipe, shaped steel or the like is provided in each block. The upper block 4 is divided into an arc shape that supports the roller chain 17 (in the drawing, the arc angle is 18
Guide rails 18 of 0 degrees or more) are provided on both left and right sides, and arcuate (substantially semicircle) guide rails 18 are also provided at the downstream end of the water storage channel 7 of the lower block 6. In addition, guide rails 18 for supporting the roller chains 17 are built in the ascending / descending passages 19 and 20 arranged in parallel in the intermediate block 5.

As shown in FIGS. 4 to 6, the transfer container 9 has a box-like shape and a floor plate 21 serving as a bottom portion disposed in the center thereof, and has a primary chamber 22 when rising and a secondary chamber when descending on the back side thereof. Room 2
3 are formed. The upper side 22a of the primary chamber 22 is formed in a curved shape so as to form a cam surface from the inside to the outside,
A chute surface 22b is formed inside the inside. The inner side and the outer side surface of the secondary chamber 23 are constituted by bellows-like members 24,
It is connected to the floor plate 21 via the hinge 24a. A connecting rod 23a is stretched between the other side surfaces facing each other. Further, the side surfaces of both the primary chamber 22 and the secondary chamber 23 are made of a steel plate or the like, the exposed portion is covered with rubber, and the connecting rod 23a is also covered with rubber. As shown in FIG. 7, central portions of both side surfaces of the transport container 9 are projected so as to connect the roller chains 17, and these portions are supported from both sides by the guide rails 18, and the water blocking plate 25 is provided outside the rails. It is stretched and made watertight.

As shown in FIGS. 2 and 3, the upper block 4 is provided with a transfer chute 26 which is inclined toward the lateral guiding tank 12. A bird net 27 (see FIG. 1) is attached to the upper end, the side surface, and each block.

As shown in FIGS. 8 to 12, the shutoff valve 28 is provided at a position where the transport container 9 is reversed and the upstream running water flows into the upper block 4. Block valve 28
Has a shaft 29 that traverses the water channel, and a laying motion portion 28a projecting to the downstream side of the shaft 29 has a plurality of guide rollers 30 mounted in parallel on both sides of a convex upper surface, and has a trapezoidal shape for supporting the shaft 29. The inclination angle determines the inclination angle, and a stopper 31 that abuts the tip of the inclination portion is attached to the end of the inclination surface. The trapezoidal inclined surface and side surface are covered with a cover 32 to prevent entry of fallen fish due to wraparound. The cover 32 is made of sponge, rubber, or styrofoam so as not to damage the fish.

In addition, the upright operation portion 28b, which protrudes to the upstream side opposite to the fall operation portion 28a, is formed in a hook shape, and an opening 34 in which a wire net 33 is laid is formed on a surface of an intermediate portion thereof. Water circulates through the opening 34 during rotation, thereby reducing water resistance. In addition, a weight 35 is attached to the front part.
The upper part of the front part is stretched with a steel plate to have a substantially arcuate cam shape. The lower end of the moving screen 37 that slides inside the inclined moving screen guide groove 36 is in contact with the instep part. A stopper 38 is attached to the lower end of the trapezoid that contacts the tip of the hook, and a sedimentation / sand removal pipe 39 is provided in the vicinity thereof.

As shown in FIG. 4, the intermediate block 5 of the frame is composed of main columns T1, T2, T3, T4 made of steel pipes and steel plates stretched between them (see FIG. 7). The ascending passage 19 is formed, and the main pillars T1 and T2 are descending passages
Is formed. The upstream water flows down between the main columns T1 and T2, or flows into the spill water discharge tank 42 through the water pipe 40 and the dustproof screen 41 and flows down the main column T4. Water pipe 4
In the case of 0, the inflow port is installed at an appropriate height so that the water flows down even if the water does not flow into the spill water discharge tank 42. Holes 43 are formed in the main pillar T1 at equal intervals downward from an intermediate portion of the height. The diameter of the hole 43 may be changed so that the amount of outflow due to the hydrostatic head at the hole position is the same. The water that has flowed into the main pillar T1 passes through the drainage pipe 44 and the running water storage tank 45 of the lower block 6 or the makeup water pipe 46, and the water storage channel 7
Flow down to In addition, the water flowing into the main pillar T4 is the priming pipe 4
7. Flow down to the rotating means P utilizing hydraulic power. Therefore, the diameter of the steel pipe of the main pillar T4 may be larger than the diameter for obtaining the structurally required strength, because the required amount of water is supplied to the rotating means P. Reference numeral 48 is a flow rate adjusting valve. In addition, the water pumped up by the transport container 9 is dropped onto the transfer chute 26 and flown into the guide tank 12.

Next, the lower block 6 will be described with reference to FIGS. The lower block 6 supported by the suspension rod 16 is surrounded by a revetment below the water storage channel 7 to form a water storage tank 45 for flowing water, and a bottom plate of the water storage channel 7 on the downstream side is connected to the water storage tank 45 for flowing water. The water hole 7a (see FIG. 2) is opened. At the downstream end of the water storage channel 7, an arc-shaped guide rail 18 slides the roller chain 17 to rotationally move the transport container 9, and the passage (opening) of the passage of the transport container 9 is opened. On the extension of the canal 7, a guide canal 49
Is provided. In addition, the priming pipe 47 is the water storage channel 7,
It is arranged on both sides along the guiding water channel 49 and sprays water from the tip end position of the guiding water channel 49.

The opening between the water storage channel 7 and the guide channel 49 is closed by a bottom closing plate 50, and both bottom surfaces are connected.
The bottom closing plate 50 is attached to the bottom upstream end of the guiding water channel 49 via a hinge, and is provided with a weight 51 at the tip so as to always fall so as to close the opening. A water drain hole 50a is formed in the bottom closing plate 50 to reduce the resistance of water when the bottom closing plate 50 rotates. In addition, the upstream side bottom surface of the water storage channel 7 is inclined to form a flowing water outlet 52, which is in communication with the flowing water storage tank 45.

Here, the structure for removing the looseness of the roller chain 17 will be described. The upper block 4 is floated by rotating the push bolt provided on the lower flange 8 of the upper block 4 with the uppermost flange 8 of the intermediate block 5 as a base, and the adjusting pipe is inserted into the space portion thereof, Both the flanges 8 and 8 are fixed by tightening the bolts through the flanges 8 and 8 and the adjusting pipe.
Try to give a pulling force to.

Next, the rotating means P will be described with reference to FIGS. A water conduit 53 is connected to the lower part of the main pillar T4 to let water flow into a water wheel (water wheel rotating section 54) which is a rotating means P, and the water wheel rotating section 54 discharges a discharge pipe 55 and a drain gutter 56.
, And the tip of the drain gutter 56 is directed to the running water reservoir 45. In addition, the water turbine rotating unit 54 supports the blade shafts on the thrust bearings 57 and connects them to the shafts of the speed reducer 58.
The output shaft of is connected to a transmission shaft 60 via a joint 59. The speed reducer 58 has a centrifugal brake and a manual operation function. In addition, as shown in FIG.
A rotary shaft 61 is provided on the side wall of the chain 6, and the chain 6 is attached to the transmission shaft 60 and the sprockets 62 and 63 fixed to the rotary shaft 61.
Large sprocket 6 which is attached to the rotating shaft 61
5 is engaged with a roller chain 17 connected to the transport container 9. The water conduit 53 is provided with a flow rate adjusting valve 66.

In addition to using a water wheel as the rotating means P,
As shown in FIGS. 16 and 17, a pump 67 may be attached in the flowing water passage so that the rotational force can be obtained from the pump 67.

Next, the operation of the fishway device 3 will be described. First, in the initial state for moving the transfer container 9 of the fishway device 3, the shut-off valve 28 closes the water channel due to the fall motion part 28a standing up. Therefore, as shown in FIG. And it flows down through the spill water discharge tank 42. Therefore, as shown in FIGS. 13 and 14, the water conduit 53
Flowing water is supplied to the water turbine through the rotary shaft 61 and the rotation of the blade shaft is transmitted to the transmission shaft 60 via the speed reducer 58, and the rotary shaft 61 attached to the water reservoir 7 is rotated via the chain 64 to rotate the rotary shaft 61.
The large sprocket 65 attached to the
The roller chain 17 to which is fixed is slid in the guide rail 18 to move the transport container 9.

The slope of the water reservoir 7 is adjusted by inserting a liner plate into the joint of the flange 8 between the lower block 6 and the intermediate block 5 in accordance with the upstream fish or the downstream water level. Determine the length of the hanging rod 16 and place it in a proper position. The running water that has flowed into the drainage pipe 44 also flows into the running water storage tank 45, and the running water flows into the holding water channel 7 from the running water discharge port 52 and the spring hole 7a by the force of the excess running water.

Next, the operation of the fishway device 3 for run-up fish will be described. As shown in FIG. 2, the run-up fish is discharged from the downstream water channel by discharging water from the priming pipes 47 on both sides of the guiding water channel 49 and flowing water from the water outlet 52 and spring water from the spring hole 7a. The water will be guided to the guide water channel 49 and the water storage channel 7 and will move upstream. The transport container 9 located below the bottom closing plate 50 pushes up the bottom closing plate 50 by the hydraulic force flowing between T1 and T2 and the operating force (hydraulic force) by the rotating means P to move to the water storage channel 7. (See FIG. 1), moving from the downstream side to the upstream side of the water storage channel 7 to capture and house the upstream fish. On the upstream side of the water storage channel 7, the replenishment water from the replenishment water pipe 46 is received to fill the inside of the transport container 9, and in this state, it is vertically raised. When the transport container 9 is rising vertically, the bird-preventing net 27 ensures the safety of the upstream fish. The water discharged from the makeup water pipe 46 effectively acts on the upstream fish.

In the upper block 4, the roller chain 17 slides so that the transport container 9 is reversed and the running water inside which the run-up fish has been pumped down is dropped from the chute surface 22b to the transfer chute 26 below, and then the transfer chute 26. The run-up fish will be discharged to the guide tank 12 by sliding on the runway, and the run-up fish will be discharged to the water channel on the upstream side of the dam through the through water channel 10.

The slow velocity of the water flow in the water storage channel 7 is effective for creating an environment close to that of a natural flow and for keeping the time for a long time. Further, when the two transfer containers 9 are located in the water storage channel 7, the water flow becomes unnatural between them, so that the interval between the transfer containers 9 is made long to create a useful water flow.

Next, the operation of assisting the falling fish will be described with reference to FIGS. 8 to 11. Since the lower end of the moving screen 37 is in contact with the instep part of the standing motion part 28b of the shutoff valve 28, the flowing water reaches the standing fall motion part 28a of the shutoff valve 28 over the moving screen 37. When the transport container 9 reverses and descends and comes into contact with the laying motion portion 28a, the laying motion portion 28a and the transport container 9 smoothly descend on their respective orbits by the container cam surface (upper side 22a) and the guide roller 30. At this time, as shown in FIG. 10, the instep part of the standing motion part 28b rises and the moving screen 37 moves upward to prevent running water and prevent the descending fish from escaping to the upstream side. Then, the fall motion portion 28a is rotated and lowered to form a gap in the water channel, and the descending fish falls from between the gaps, and the descending fish is accommodated in the transport container 9 located below.

Further, as shown in FIG. 11, when the guide roller 30 of the fall motion unit 28a comes to slide on the side surface of the transport container 9, the bellows-like member 24 closes the gap of the water channel, and the running water is efficiently transported in the transport container. Housed in 9. In addition, the standing motion unit 2
The moving screen 37 which is in contact with 8b is pushed upward by the upward movement of the instep part to block the upstream water channel to reduce the amount of water flowing down, and accordingly, the transport container 9 is less likely to be urged to fall. I try not to. Further, in FIG. 10, when the running water further falls into the transport container 9 which is descending the descending passage 20, excess water flows out from the hole 43 of the main pillar T1, so that the rotation speed of the roller chain 17 is increased. It will not be uneven.

When the closing valve 28 cannot be closed, an excessive water flow is applied to the transfer container 9 in the descending passage 20 to rapidly increase the moving speed, but it is protected by the centrifugal brake.

As described above, since the moving drive source of the transport container for transporting the upstream fish and the falling fish can convert the vertical water level difference of the river crossing structure into hydraulic power, maintenance and management costs Can be cheaper. In addition, for priming water, runoff water, and spring water for guiding upstream fish, upstream water is piped using the main columns T1 and T4, so the structure is simple and the frame appearance is clean, and Improves structural strength.

Further, since the frame constituting the elevator type fishway device 3 is divided into upper, lower and middle blocks, it is easy to assemble and install at the site. Therefore, even when it is relocated and used, disassembling, assembling, Easy to install and less expensive. Also, compared with the conventional technology, the external structure rises vertically to absorb the vertical water level difference, so the plane space occupied by the device becomes smaller, and it looks like a fishway that is horizontally stretched like a fixed concrete fishway. Civil engineering facility costs are unnecessary.

[0036]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, it uses hydraulic power utilizing the head of water flow,
There is an advantage that mechanical power and its maintenance are not required, and the steel pipe of the frame is used as the pipe for flowing water, so that the facility cost is low and the appearance is clean. In addition, the water flow in the water storage channel can be set at a very low speed by installing multiple transport containers at sufficient intervals and providing a rotating means by hydraulic power, and it is effective to guide the upstream fish along with priming water and spring water. Is. In addition, the descending fish can be accommodated even when the transport container is reversed, and the water stored with the descending fish is intermittently flowed down by the closing valve, so the speed of the transport container is maintained. It never gets faster.

[Brief description of drawings]

1 is a side sectional view showing a hydraulic elevator type fishway device according to an embodiment of the present invention.

FIG. 2 is a plan view of the device shown in FIG.

FIG. 3 is a front view of the device shown in FIG. 1;

FIG. 4 is a schematic diagram illustrating a water flow system of the fishway device shown in FIG.

FIG. 5 is a side view showing the transport container shown in FIG. 4 positioned in an intermediate block.

FIG. 6 is a top view of the transport container shown in FIG.

FIG. 7 is a cross-sectional view showing a transfer container in the intermediate block shown in FIG.

FIG. 8 is a cross-sectional view of the upper block of the embodiment.

9 is a cross-sectional view taken along the line AA of the upper block shown in FIG.

10 is a cross-sectional view of the upper block shown in FIG.

11 is a cross-sectional view of the upper block shown in FIG.

12 is a front view in the direction of arrow B shown in FIG.

FIG. 13 is a plan view showing a water wheel type rotating means of an embodiment.

FIG. 14 is a side view showing a transmission system of the water turbine type rotating means of the embodiment.

FIG. 15 is a side view of the water wheel type rotating means shown in FIG. 13.

FIG. 16 is a side view showing the pump-type rotating means of the embodiment.

FIG. 17 is a plan view of the pump-type rotating means shown in FIG.

[Explanation of symbols]

 2 River crossing structure 7 Reservoir canal 9 Transport container 12 Induction tank 17 Connecting member 18 Guide rail 19 Ascending passage 20 Descending passage 21 Floor plate 26 Transfer chute 28 Closure valve 45 Running water reservoir 47 Inhalation pipe 49 Induction waterway 50 Bottom closure plate T1, T2, T3, T4 Main column P Rotating means

Claims (4)

[Claims] 1. A frame for constructing an ascending / descending passage is provided immediately downstream of a river crossing structure having a difference in vertical water level, and an induction tank for storing running water upstream of the river crossing structure is provided above the frame. An endless connecting member extending upstream and downstream of the river crossing structure is rotatably provided by being supported by a guide rail in the ascending / descending passages, and a rotating means based on a difference in up-and-down water level of the flowing water is the connecting member. To the connecting member, a transport container in which a floor plate is arranged in the center of a box and containers are formed on both sides of the connecting member, a plurality of container openings are attached at intervals according to the moving direction of the connecting member, A transfer chute that communicates with the guide tank is provided below the position where the transport container rotates in the upper inverted position of the connecting member, and a shutoff valve that intermittently feeds the running water of the guide tank into the descending passage is provided. That A characteristic hydraulic elevator type fishway device. 2. The hydraulic elevator fishway according to claim 1, wherein a water storage channel extending downstream is provided in the lower part of the frame, and a guide rail of the connecting member is provided along the water storage channel. apparatus. 3. A bottom closing plate for providing a guiding water channel facing the most downstream end of the water storage channel and arranging a priming pipe to connect the guiding water channel and the water storage channel on the floor surface extension, and the bottom blocking plate. The hydraulic elevator type fishway device according to claim 2, wherein the hydraulic elevator type fishway device is provided so as to be rotatable about a side connected to the guide water channel. 4. The ascending / descending passage of the frame is framed by a main column made of steel pipe, the upper part of the main column is communicated with the upstream channel side, and the lower part of the main column is connected to a running water reservoir and a priming pipe. The hydraulic elevator type fishway device according to claim 1, wherein