WO2017166862A1

WO2017166862A1 - Fish escape prevention apparatus for use in flood discharge, and dam

Info

Publication number: WO2017166862A1
Application number: PCT/CN2016/109023
Authority: WO
Inventors: 廖运太
Original assignee: 四川行之智汇知识产权运营有限公司; 廖运太
Priority date: 2016-04-01
Filing date: 2016-12-08
Publication date: 2017-10-05
Also published as: CN105821813B; CN105821813A

Abstract

A fish escape prevention apparatus for use in flood discharge comprises a plurality of grating bars (2) disposed at a spillway inlet and arranged in a row. A gap between two adjacent grating bars (2) is configured to enable water to pass therethrough. The fish escape prevention apparatus also comprises a hinge shaft (4). The upper ends of the grating bars (2) are connected to the hinge shaft (4), either directly or via a connection member. The grating bars (2) are all arranged in an inclined position. The lower ends of the grating bars (2) are arranged towards a downstream direction, and can be rotated about an axle of the hinge shaft (4).

Description

Fish anti-escape device and dam body for flood discharge

Technical field

The invention relates to the technical field of agricultural production fish culture, in particular to a fish escape device and a dam body for flood discharge.

Background technique

As a kind of intensive agriculture, aquaculture, it refers to the cultivation of fish or various seafood in artificially opened fishing rods for consumption. According to different culture water quality, it can be divided into three categories: freshwater aquaculture, saltwater aquaculture and sea surface culture. Aquaculture is the most densely distributed in the southwestern coastal areas, with the output value ranking second in the offshore fishery. The mainland is mainly based on freshwater production and aquaculture. Under the influence of the rapid development of modern industrialization, ecological damage cannot be avoided, and many rivers, ditches and other flowing areas have been polluted to varying degrees. In addition to overfishing, the use of irrational fishing methods such as electric catching, mine catching, and drug fishing has led to a sharp decline in the abundance of wild fish resources in the above-mentioned flowing water areas.

It is known that people eat food in the waters of good fluidity. Compared with fish raised in ponds, lakes and cages, they generally have more delicious meat. In the rivers of the prior art, in the area where the water flow is relatively stable, river cage intensive fish culture has appeared, and at the same time, large-scale fishery farming has been carried out in the vicinity of the river by introducing the river water through the cofferdam. Although river water is used, it is more abundant in the use of water resources than traditional fish farming, which can improve the quality of fishery products to a certain extent. However, the area of the fish living area in the above culture process is not large, and the area of the above water area limits the activity space during the fish growth process, so that the quality of the obtained fish products is second to that of large-scale lakes and rivers in the natural environment. class.

However, the existing large-scale lakes and rivers generally bear the heavy responsibility of water storage and flood discharge. In the fishery aquaculture industry, floods have a greater impact on the production of fisheries in large-scale waters, mainly because in the process of flood discharge, fish cannot be separated from garbage and vegetation residues caused by upstream floods, even if pulse is used. Electric drive to catch fish, and can not prevent fish from escaping with the flood.

Summary of the invention

In view of the above-mentioned prior art, in the fishery aquaculture industry, the flood has a great influence on the yield of large-scale water fisheries, mainly because the fish and the garbage and vegetation residues brought along with the upstream flood cannot be distinguished during the flood discharge process. In the meantime, even if a fish is driven by a pulse electric drive, the problem that a large amount of fish escapes with the flood cannot be avoided. The present invention provides a fish escape prevention device and a dam body for flood discharge.

In view of the above problems, the fish escape prevention device and the dam body for flood discharge provided by the present invention achieve the object through the following technical points: a fish escape prevention device for flood discharge, including a grid strip for being disposed at a flood discharge port, the grid There are a plurality of grid bars, and a plurality of grid bars are arranged in a row, adjacent grid bars have gaps for water flow therethrough, and an hinge shaft, the grid bars The upper end is directly connected to the hinge shaft or connected to the hinge shaft through a connecting member, the grid bars are inclined, the lower end of the grill strip is oriented in the downstream direction of the water flow, and the grille strips are rotatable about the axis of the hinge shaft .

Specifically, the plurality of grid bars arranged in a row form a fence-like structure, and the gap on the fence-like structure is composed of a gap between adjacent grid bars, and the above gap is used as a water flow channel during flood discharge. In the present case, the upper end of the grid strip is directly connected to the hinge shaft or connected to the hinge shaft through the connecting member, and the axis of the hinge shaft is used as the rotating shaft of the grid bar to rotate the hinge shaft or the connecting member rotates relative to the hinge shaft. In the process of the invention, the purpose of the grid bar is to rotate the axis of the hinge shaft as a rotating shaft. At the same time, the above-mentioned hinge shaft rotation or the torque of the connecting member rotating relative to the hinge shaft is applied through the grille bar: the anti-escape device is installed at the flood discharge port, and in the case of no garbage or vegetation debris in the water, the grille bar only According to the flushing force of the water directly acting on the water, a grid bar suitable for the weight is set, and the component force of the above flushing force is insufficient to overcome the gravity of the grid bar. In this case, the grid strip maintains the original position and the water flow Passing through the gap between the grid bars; in the case of garbage or vegetation debris in the water, when the above garbage or vegetation residues flow through the anti-escape device with water, small pieces of garbage or vegetation residues are above Pass through the anti-escape device in the gap, and the grid bar blocks the passage of garbage or vegetation residues when the volume of garbage or vegetation remains is large. At this time, due to the large area of the water surface, such as garbage or vegetation debris, In this way, compared with the case where there is no attachment on the grille strip, the flushing force of the grille strip is increased by the water, so that the grille strip can be rotated by the axis of the hinge shaft, the position of the lower end of the grille strip changes, and the grille Strips with rubbish or vegetation Other changes in the inclination of the contact surface, so that garbage or vegetation and other debris in the water flow, driven by Fangtao from below the present apparatus.

The width of the gap between the grid bars of the anti-escape device depends on the size of the upstream fish, that is, the gap width between the grid bars is not greater than the width of the fish to be blocked. As a fish, when it swims with itself or swims with the water to the grille strip, it will swim back because there is an obstacle in front, which will force it to stick to it under the scouring of the hydraulic power. After the grille, it resists the return. In this way, the anti-escape device can be opened when the garbage or the vegetation residue is large or accumulates to a certain amount, thereby preventing the debris in the flood from affecting the flood discharge function of the anti-escape device, and at the same time, the fish is exposed to the local defense. When escaping the device, under the stress of the fish, the fish will swim upstream of the water flow to avoid the fish from escaping when the flood discharge is avoided. After the debris passes through the grille strip, the grille strips fall back under the self-weight of the grille strip to keep the fish from escaping.

Further, when the anti-escape device is in use, the upper end of the grille strip is located above the water surface, and further, since some fish have better jumping ability, it is preferable that the upper end of the grille strip is one meter higher than the water surface; When there is no enough area attached to the debris under its own weight, its lower end is in contact with the bottom of the flood discharge port.

As a further technical solution for the fish escape prevention device for flood discharge above:

As a technical solution that all the grid bars can be rotated synchronously about the axis of the hinge shaft, the upper end of the grid bar is directly connected to the hinge shaft, and further comprises at least two shaft seats for the hinged shaft support, the shaft seat is arranged There is a rolling bearing or a sliding bearing, and the hinge shaft is fixed to the shaft seat by a rolling bearing or a sliding bearing. In this solution, the rotation of the grid bar is through the hinged shaft. This is achieved by rolling in a rolling bearing or a plain bearing.

As a specific implementation of the hinge shaft not rotating, the grid bar is rotated about the hinge shaft, the upper end of the grid strip is connected to the hinge shaft through a connecting member, and the connecting member is a sleeve that is matched with the hinge shaft. The upper end of the grille strip is fixedly coupled to the sleeve.

As a technical solution that each grid bar can be rotated independently, when a part of the anti-escape device has a sufficient area of attachment, the partial grille of the anti-escape device rotates, so that the attached crop can flow with the water. Through the anti-escape device, the large area of the grid bar on the anti-escape device is prevented from opening, causing excessive fish to escape. The number of the sleeves is equal to the number of the grid bars, and each sleeve is fixedly connected with a grid. Grid bar.

As an implementation in which the grid bars of the partial length can be rotated synchronously in the longitudinal direction of the hinge shaft, the number of the sleeves is less than the number of the grid bars, and at least one grid is fixedly connected to each sleeve. Strips, each of which is fixed with a driving device for driving each sleeve to rotate about the axis of the hinge shaft. The utility model aims to realize the rotation of the specific sleeve by the driving device, so that the grid bar fixed on the sleeve can be in the open state of the debris, thereby facilitating the manual control of the grille debris through the open state. the goal of. The above driving device may be a mechanical driving device or a manual rotating handle connected to the sleeve. The solution is particularly suitable for the case where a large amount of debris is continuously present in the flood, and is used for realizing: if the driving device is not used, the local grid The grid is in the open state for a long time, and the fish escapes a lot under the obstacles. By setting the driving device, the local grid bars are opened manually, and the stress of the fish is used to avoid the escape or reduction of the fish. The purpose of the small escape.

In order to prevent the foreign matter from adhering to the grid strip or reducing the amount of debris attached to the grid strip, the corners of the side surface and the bottom surface of the water-facing surface of the grid strip are arc-shaped chamfers.

Since the flood will have different flow rates or flow rates during the flood discharge process, in order to facilitate the adjustment of the weight of the grille strip so that the grille strips do not block debris, the grille strip can keep the fish from escaping. The grid bars are each provided with a weight which is not vertically projected on the axis of the hinge shaft, and the connection manner of the weights and the grid bars is in a detachable connection form. The detachable connection form of the above weight block and the grid bar facilitates the configuration of weights of different weights according to different water flow rates or flow rates. As a specific implementation, an internal threaded hole is disposed on the grille strip, and the weighted block adopts an externally threaded rod, and the weight form of the above form is convenient to connect, and has a good function of preventing the falling off of the weight.

The invention also discloses a fish anti-escape dam body for flood discharge, comprising a dam body, and further comprising the fish escape prevention device for flood discharge provided by any of the above technical solutions, wherein the row of grid bars starts At one end of the body of the dam, the rows of grid bars arranged in the row terminate at the other end of the body of the dam, and the lower end of the grid strip is erected on the surface of the body of the dam. In the present solution, the anti-escape device provided by the present invention is applied to the dam body of the existing large-area water area, so that the dam body not only can exert a good flood discharge capacity, but also the dam body has a good anti-fish escape function. .

As a technical solution for the above-mentioned flood prevention dam body for flood discharge:

As a technical solution for inducing debris from the bottom of the grid strip through the grid strip through the direction of the flood water flow, along the direction of the water flow, the surface of the dam body behind the lower end of the grid strip is a slope, the apex of the slope The lower end of the grid bar is in contact.

When the volume of debris in the flood is large or the surface friction factor is large, a situation may occur in which the debris moves along the surface of the grille strip to the bottom of the grille strip, and the debris contacts the surface of the body of the dam. Under the friction between the object and the surface of the body of the dam, the debris may be clamped between the grid strip and the body of the dam. As the debris accumulates further, the grating strip passes through, causing the grid bar and the dam in a short time. The gap between the body bodies is too large, so that the grid bars can not fall back in a short time, which creates a good opportunity for the fish to escape. Therefore, the lower end of the grid bar is further provided with a bending section, the bending The direction of the bend of the fold is toward the downstream of the water flow. The above bending section can make the resistance of the grid strip to the debris greatly smaller when the above situation occurs, so that the debris can smoothly pass through the grid strip, so as to avoid the situation that the grid strip is excessively opened in a certain time. .

The invention has the following beneficial effects:

The invention provides a fish escape prevention device and a dam body for flood discharge, and the anti-escape device and the dam body including the anti-escape device are used, and the debris in the flood can be passed through the grid bar in time when the flood passes Therefore, the fish escape prevention device and the dam body can maintain a good flood discharge capacity for a long time; at the same time, the action of the fish escape prevention device and the grid bar on the dam body through the self-weight, the hydraulic action on the body and The hydraulic action introduced by the debris is controlled, so the working process of the anti-escape device and the dam body can be unattended; at the same time, the anti-escape device and the dam body make good use of the biological characteristics of the fish, and can effectively avoid the flood discharge process. The large number of fish escaped in China is conducive to improving the efficiency of fish farming in large-scale waters. At the same time, the anti-escape device and dam body have the advantages of small investment and safe use compared with traditional anti-floating facilities.

DRAWINGS

Figure 1 is a side view of a specific operational embodiment of the fish escape prevention device for flood discharge according to the present invention;

Figure 2 is a plan view showing a specific operational embodiment of the fish escape prevention device for flood discharge according to the present invention;

3 is a schematic view showing the structure of a grid bar in a specific embodiment of the fish escape prevention device for flood discharge according to the present invention;

Figure 4 is a cross-sectional view showing the connection relationship of the sleeve, the grid bar and the hinge shaft in a specific embodiment of the fish escape prevention device for flood discharge according to the present invention;

Fig. 5 is a schematic view showing the connection relationship between the sleeve, the grid bar and the hinge shaft in a specific embodiment of the fish escape prevention device for flood discharge according to the present invention.

The figures in the figure represent: 1, dam body, 2, grid bar, 3, counterweight, 4, hinged shaft, 5, shaft seat, 6, guardrail, 7, intermediate buttress, 8, sleeve 9, bending section.

detailed description

The present invention will be further described in detail below with reference to the embodiments, but the structure of the present invention is not limited to the following examples.

Example 1:

As shown in FIG. 1 to FIG. 5, the fish escape prevention device for flood discharge includes a grid strip 2 for being disposed at a flood discharge port, the plurality of grid strips 2 are arranged in a row, and the plurality of grid strips 2 are arranged in a row. Arranged, adjacent grid bars 2 have a gap for water flow therethrough, and further comprise an articulated shaft 4, the upper end of which is directly connected to the hinge shaft 4 or connected to the hinge shaft 4 by a connecting member The grid bars 2 are all inclined, the lower end of the grid bar 2 is oriented in the downstream direction of the water flow, and the grid bars 2 are all rotatable about the axis of the hinge shaft 4.

Specifically, the plurality of grid bars 2 arranged in a row form a fence-like structure, and the gaps on the fence-like structure are composed of gaps between adjacent grid bars 2, and the above gaps serve as water flow channels during flood discharge. In the present case, the upper end of the grid bar 2 is directly connected to the hinge shaft 4 or connected to the hinge shaft 4 through a connecting member, and the axis of the hinge shaft 4 is intended to be the rotation shaft of the grid bar 2 to be rotated or connected to the hinge shaft 4. In the process of rotating the member relative to the hinge shaft 4, the object of the invention is achieved by rotating the grid bar 2 with the axis of the hinge shaft 4 as a rotation axis. At the same time, the rotation of the above hinged shaft 4 or the rotation of the connecting member relative to the hinge shaft 4 is applied by the grille strip 2: the anti-escape device is installed at the flood discharge port, in the case of no garbage or vegetation debris in the water, The grid bar 2 is only subjected to the flushing force of the water directly acting thereon, and the grid strip 2 of suitable weight is provided. At this time, the component force of the above flushing force is insufficient to overcome the gravity of the grid strip 2, in this case the grid strip 2 Keep the original position, the water flow passes through the gap between the grid bars 2; in the case of garbage or vegetation residues in the water, the above garbage or vegetation debris flows through the anti-escape device with the water, small pieces Garbage or vegetation residues pass through the above-mentioned escape device, and the volume of garbage or vegetation remains is large, and the grid strip 2 blocks the passage of garbage or vegetation debris. At this time, due to garbage or vegetation residues If there is a large area of the water-facing surface, the grating strip 2 is increased in water absorbing force compared to the case where there is no attachment on the grid strip 2, so that the grid strip 2 can be hinged to the shaft 4 When the axis rotates, the position of the lower end of the grille strip 2 changes, and the grille strip 2 and The inclination of the contact surface residues rubbish or the like vegetation changes, so, garbage or vegetation and other debris in the water flow, driven by Fangtao from below the present apparatus.

The gap width between the grid strips 2 of the escape device depends on the size of the upstream fish, that is, the gap width between the grid bars 2 is not greater than the width of the fish to be blocked. As a fish, when it swims with itself or swims with the water to the grille strip 2 and contacts the grille strip 2, it will swim back because there is an obstacle in front, which will force it under the flushing of the hydraulic force. Close to the grille 2 and resist the return. In this way, the anti-escape device can be opened when the garbage or the vegetation residue is large or accumulates to a certain amount, thereby preventing the debris in the flood from affecting the flood discharge function of the anti-escape device, and at the same time, the fish is exposed to the local defense. When escaping the device, under the stress of the fish, the fish will swim upstream of the water flow to avoid the fish from escaping when the flood discharge is avoided. After the debris passes through the grille strip 2, under the self-weight of the grille strip 2, the grille strip 2 falls back to keep the fish from escaping. status.

Further, when the anti-escape device is in use, the upper end of the grille strip 2 is located above the water surface. Further, since some fish have better jumping ability, it is preferable that the upper end of the grille strip 2 is one meter higher than the water surface; When the grid bar 2 does not have a sufficient area of debris under its own weight, its lower end is in contact with the bottom of the flood discharge port.

Example 2:

As shown in FIG. 1 to FIG. 5, the embodiment is further defined on the basis of Embodiment 1: as a technical solution that all the grid bars 2 can be rotated synchronously about the axis of the hinge shaft 4, the upper end of the grid bar 2 is directly Attached to the hinge shaft 4, further comprising at least two shaft seats 5 for supporting the hinge shaft 4, wherein the shaft seat 5 is provided with a rolling bearing or a sliding bearing, and the hinge shaft 4 is fixed to the shaft seat by a rolling bearing or a sliding bearing 5 on. In the present solution, the rotation of the grid bar 2 is achieved by the rotation of the hinge shaft 4 in a rolling bearing or a sliding bearing.

As a specific implementation of the hinge shaft 4 itself not rotating, the grid bar 2 is rotated about the hinge shaft 4, the upper end of the grid bar 2 is connected to the hinge shaft 4 by a connecting member, and the connecting member is a hinge shaft 4 A clearance fit sleeve 8 , the upper end of the grid strip 2 being fixedly connected to the sleeve 8 .

As a technical solution that each of the grid bars 2 can be rotated independently, when a part of the anti-escape device has a sufficient area of attachment, the partial grid strip 2 of the anti-escape device rotates, so that the attached crop can be With the water flowing through the anti-escape device, the large area of the grille strip 2 on the anti-escape device is prevented from opening, causing excessive fish to escape. The number of the sleeves 8 is equal to the number of the grid bars 2, and each sleeve 8 is on the same. A grid bar 2 is fixedly connected.

As an implementation in the longitudinal direction of the hinge shaft 4, the grid bars 2 can be rotated synchronously over a partial length, the number of the sleeves 8 is less than the number of the grid bars 2, and each sleeve 8 is at least fixed A grid strip 2 is attached, and each of the sleeves 8 is fixed with a driving device for driving the respective sleeves 8 to rotate about the axis of the hinge shaft 4. The solution is to realize the rotation of the specific sleeve 8 by the driving device, so that the grille strip 2 fixed on the sleeve 8 is in the open state of the debris, and the manual control of the grid strip 2 is facilitated. The purpose of the object through the open state. The above driving device may be a mechanical driving device or a manual rotating handle connected to the sleeve 8. The solution is particularly suitable for the case where a large amount of debris is continuously present in the flood, and is used for realizing: if the driving device is not used, the local part The grille strip 2 has been in the open state for a long time, and the fish escapes a lot under the obstacles. By setting the driving device, the local grid strips 2 are manually opened, and the fish is used to avoid the fish. Escape or reduce the amount of escape.

In order to prevent the foreign matter from adhering to the grille strip 2 or reducing the amount of debris adhering to the grille strip 2, the corners of the side surface and the bottom surface of the mating surface of the grille strip 2 are arc-shaped chamfers.

Since the flood has different flow rates or flows during the flood discharge process, in order to facilitate adjusting the weight of the grille strip 2 so that there is no obstruction on the grille strip 2, the grille strip 2 can keep the fish from escaping. State, the grid bar 2 A counterweight 3, which is not vertically projected on the axis of the hinge shaft 4, is provided, and the connection of the counterweight 3 to the grid bar 2 is in the form of a detachable connection. The detachable connection form of the above weight 3 and the grille 2 facilitates the configuration of the weights 3 of different weights according to different water flow rates or flows. As a specific implementation, an internal threaded hole is arranged on the grille strip 2, and the weighted block 3 adopts an externally threaded rod. The above-mentioned weighted block 3 is convenient to connect, and has a good weight 3 to prevent falling off. Features.

In this embodiment, the position of the sleeve 8 on the hinge shaft 4 can be set in the form of a circlip for the shaft 8 on the sleeve 8.

Example 3:

As shown in FIG. 1 to FIG. 5 , the present embodiment further discloses a fish anti-escape dam body for flood discharge, comprising a dam body 1 , and further comprising the flood discharge provided by any one of the technical solutions provided by any of the above embodiments. In the fish escape device, the rows of grid bars 2 are arranged at one end of the dam body 1 , and the rows of grid bars 2 are arranged at the other end of the dam body 1 and the grid bars The lower end of 2 is placed on the surface of the body 1 of the dam. In the present solution, the anti-escape device provided by the present invention is applied to the dam body of the existing large-area water area, so that the dam body not only can exert a good flood discharge capacity, but also the dam body has a good anti-fish escape function. .

Example 4:

As shown in FIG. 1 to FIG. 5, the embodiment further defines the dam body on the basis of Embodiment 3: as a kind of water flow direction, the debris is induced by the bottom of the grid bar 2 through the grid bar. According to the technical solution of 2, the surface of the dam body 1 behind the lower end of the grille strip 2 is a slope along the direction of the water flow, and the apex of the slope is in contact with the lower end of the grille strip 2.

When the volume of debris in the flood is large or the surface friction factor is large, a situation may occur in which the debris contacts the surface of the body of the dam 1 when the debris moves along the grille strip 2 to the bottom of the grille strip 2. Under the friction of the surface of the debris and the body of the dam body, the debris may be clamped between the grid bar 2 and the body 1 of the dam, and as the debris further accumulates, the grating strip 2 is pushed open, resulting in a short During the time, the gap between the grille strip 2 and the dam body 1 is too large, so that the grille strip 2 can not fall back in a short time, which creates a good opportunity for the fish to escape, so it is set as the grille strip 2 The lower end is also provided with a bent section 9, the bending direction of which is directed toward the downstream of the water flow. The above bending section 9 can make the resistance of the grille strip 2 to the debris greatly smaller when the above situation occurs, so that the debris can smoothly pass through the grille strip 2, so as to prevent the grille strip 2 from opening for a certain period of time. A big situation arises.

Example 5:

As shown in Figure 1 to Figure 5. The embodiment provides a specific implementation scheme of the fish-proof dam body for flood discharge. In the embodiment, the number of the sleeves 8 is less than the number of the grid bars 2, and each sleeve 8 is fixed with more than one. Root grid strip 2, said sleeve 8 The layer is sleeved on the hinge shaft 4, and the adjacent sleeves 8 are in a clearance fit relationship. On one end of the hinge shaft 4, a manual rotation handle is fixed for each sleeve 8 to one of the dams. The purpose of rotating the corresponding sleeve 8 is achieved by the side through each manual rotation handle. For the sleeve 8 which is not the outermost layer, the grid strip 2 thereon protrudes from the sleeve 8 on the outer side thereof, and a notch is provided on the sleeve 8 on the outer side thereof, and the corresponding grid strip 2 passes through the gap And the notch needs to satisfy the condition that the upper and lower ends of the notch do not hinder the rotation of the corresponding grid bar 2 when the outer sleeve 8 does not rotate.

The two ends of the hinge shaft 4 are fixedly coupled to the axle seat 5, and further comprise a plurality of intermediate buttresses 7 disposed between the axle seats 5, the bottom of the intermediate buttress 7 being fixed to the dam body 1, that is, the middle branch The pier 7 divides the hinge shaft 4 and the sleeve 8 into a plurality of segments, so that the single-stage hinge shaft 4 and the sleeve 8 have only a small bending width under the action of water flow to ensure the bottom end of the corresponding grid bar 2 Positional accuracy. In the upstream direction of the water flow, a guard rail 6 parallel to the hinge shaft 4 is arranged to provide a good safety protection for the operator when the dam is operated in the dam body.

The surface of the dam body 1 in front of the grid bar 2 is also an inclined surface, and the surface of the dam body 1 is linearly lowered toward the upstream direction of the water flow, so that the position moving with the water flow is lower than that of the grid bar 2 Under the guiding action of the inclined surface which is linearly lower on the surface of the dam body 1 in the upstream direction toward the water flow, the debris can finally pass through the dam body from the lower end of the grating strip 2, so as to avoid a large amount of debris in the dam. The purpose of stacking in front of the body.

The above is a further detailed description of the present invention in conjunction with the specific preferred embodiments, and the specific embodiments of the invention are not limited to the description. Other embodiments that are not departed from the technical solutions of the present invention are intended to be included within the scope of the present invention.

Claims

a fish escape prevention device for flood discharge, comprising a grid strip (2) for being disposed at a flood discharge port, the grid strips (2) being plural, and a plurality of grid strips (2) arranged in a row, phase Between the adjacent grid bars (2) having a gap for the passage of water, characterized in that it further comprises an articulated shaft (4), the upper end of which is directly connected to the hinge shaft (4) or Connected to the hinge shaft (4) by a connecting member, the grid strips (2) are all inclined, the lower end of the grid strip (2) faces the downstream direction of the water flow, and the grille strips (2) can be wound around the hinge shaft (4) The axis rotates.
The anti-floating device for flood discharge according to claim 1, characterized in that the upper end of the grille strip (2) is directly connected to the hinge shaft (4), and further comprises a support for the hinge shaft (4). At least two axle seats (5) are provided, in which a rolling bearing or a sliding bearing is arranged, and the hinge shaft (4) is fixed to the axle seat (5) by a rolling bearing or a sliding bearing.
The fish escape prevention device for flood discharge according to claim 1, characterized in that the upper end of the grille strip (2) is connected to the hinge shaft (4) via a connecting member, and the connecting member is The hinge shaft (4) is a clearance fit sleeve (8), and the upper end of the grid strip (2) is fixedly coupled to the sleeve (8).
The fish escape prevention device for flood discharge according to claim 3, characterized in that the number of the sleeves (8) is equal to the number of the grid bars (2), and each sleeve (8) is fixedly connected There is a grille strip (2).
The anti-floating device for flood discharge according to claim 3, wherein the number of the sleeves (8) is less than the number of the grid bars (2), and each sleeve (8) is at least fixed A grid strip (2) is attached, and each of the sleeves (8) is fixed with a driving device for driving the respective sleeves (8) to rotate about the axis of the hinge shaft (4).
The fish escape prevention device for flood discharge according to claim 1, characterized in that the corners of the side surface and the bottom surface of the water-facing surface of the grille strip (2) are arc-shaped chamfers.
The fish escape prevention device for flood discharge according to claim 1, characterized in that the grid bar (2) is provided with a weight (3) which is vertically projected not on the axis of the hinge shaft (4). The connection form of the weight (3) and the grid bar (2) is in the form of a detachable connection.
The fish defensive dam body for flood discharge, comprising a dam body (1), characterized by further comprising the fish escaping device for flood discharge according to any one of claims 1-7, wherein the rows of cells are arranged in a row The grid bar (2) starts at one end of the dam body (1), the row of grid bars (2) end at the other end of the dam body (1), and the lower end of the grid bar (2) Set on the surface of the body (1) of the dam.
The fish defensive dam body for flood discharge according to claim 8, characterized in that, in the direction of the water flow, the surface of the dam body (1) behind the lower end of the grid strip (2) is a slope, and the apex of the slope It is in contact with the lower end of the grid bar (2).
The fish escaping body for flood discharge according to claim 8, characterized in that the lower end of the grille strip (2) is further provided with a bent section (9), and the bend of the bent section (9) The direction of the fold is toward the downstream of the water flow.