Netting gear suitable for fishing fish in fishway

Abstract

The netting gear comprises a river channel body, and fishing cages higher than the water level are arranged on the two sides of an inner cavity of the river channel body. According to the netting gear suitable for fishing the fishes in the fishway, through a series of limiting and guiding of the two first fish blocking net plates, the two second fish blocking net plates, the two third fish blocking net plates, the two fourth fish blocking net plates and the two fifth fish blocking net plates, upstream or downstream fishes in a river channel body can be assisted to be guided downwards or upwards to enter a gradually-reduced space; the fish in the fishing cage can be taken out by unfolding and lifting the folding fishing net upwards, and compared with a manual fishway monitoring means in the transmission technology, time and labor are saved, monitoring is simpler, and the fish catching efficiency is higher. And the risk of wading operation of monitoring personnel can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fishway monitoring means, in particular to a net suitable for catching fish in a fishway. Background Art

[0002] Long-term monitoring of fish movement in rivers can, firstly, provide a scientific basis for optimizing fishway design; secondly, help determine the number and distribution of fish populations, facilitating targeted protection measures; thirdly, promptly detect problems such as blockage and damage that may occur in fishways, so that repairs and management can be carried out to ensure the normal operation of fishways. Existing fishway monitoring methods include netting, interception, hydroacoustic monitoring, telemetry, and video monitoring.

[0003] The above-mentioned existing methods of fishway monitoring, namely the netting method and the blocking method, are widely used in fishway projects as convenient and efficient temporary monitoring methods. However, the traditional netting method and blocking method both require lowering the water level inside the fishway, and then the monitoring personnel enter the fishway to wade through the water, which is not only time-consuming and labor-intensive, but also poses safety risks. In view of this, this article aims to propose a net suitable for catching fish in fishways, which does not require draining water to lower the water level and can capture the fish in the pond in a concentrated manner. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the fish passage in the existing river-blocking structure is usually separated from the net area to prevent fish from accidentally entering the net, that is, the net in the current river-blocking structure is usually not equipped with a fishing structure, and to propose a net suitable for catching fish in the fishway.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] A net suitable for catching fish in a fishway, comprising a river channel body, wherein two first fish retaining net plates, two second fish retaining net plates, two third fish retaining net plates, two fourth fish retaining net plates, two fishing cages and two fifth fish retaining net plates are staggeredly arranged on the left and right sides of the river channel body for guiding upstream and downstream fish to gradually swim into a multi-stage shrinking space, respectively; a fishing port is provided on one side of the fishing cage, and one side of the two fishing ports is respectively closed and connected to the inner walls of both sides of the river channel body.

[0007] Preferably, a guide sealing rod is movably installed in the fishing cage near the upstream, the cross section of the guide sealing rod is arched, and the top end of the guide sealing rod is reciprocatingly driven by a power source to move closer to or away from the fishing port of the fishing cage.

[0008] Preferably, a hanging rod is provided above the two fishing cages, the hanging rod above the fishing cage near the downstream is fixedly connected to the river channel body through a connecting rod, the hanging rod above the fishing cage near the upstream is fixedly connected to the guide sealing rod below, and the hanging rod near the upstream is horizontally slidably installed in the inner hole guide block above the river channel body through the connecting rod.

[0009] Preferably, a folding fishing net is provided in each of the two fishing cages, and a hanging rope is connected above each of the two folding fishing nets, and the upper ends of the two hanging ropes are hung on two hanging rods respectively.

[0010] Preferably, the distance between the lower end of the guide sealing rod and the bottom surface of the channel body is greater than the height of the folded fishing net in the folded state.

[0011] Preferably, the cross-sections of the fishing cage and the foldable fishing net are circular or rectangular.

[0012] Compared with the prior art, the present invention provides a net suitable for catching fish in fishways, which has the following beneficial effects:

[0013] 1. The net suitable for catching fish in fishways can assist in guiding the upstream or downstream fish in the river channel to move downward or upward into a gradually shrinking space through a series of restrictive guidance of the two fish retaining net plates one, two fish retaining net plates two, two fish retaining net plates three, two fish retaining net plates four and two fish retaining net plates five, until the fish are concentratedly guided into the small space downstream or upstream above the folding fishing net in the fishing cage, so that the catching efficiency is higher, and the folding fishing net can be unfolded and lifted upward to take out the fish in the fishing cage, and the above-mentioned two fishing cages are arranged at the edges of both sides of the river channel, without the need for monitoring personnel to wade through the water. Compared with the manual fishway monitoring method in the transmission technology, there is no need to drain water to lower the water level. The monitoring personnel only need to lift up the fish in the folding fishing nets in the two fishing cages on both sides of the river channel, which not only saves time and labor, makes monitoring simpler, but also reduces the risk of monitoring personnel wading through the water.

[0014] 2. The net suitable for catching fish in a fishway is convenient for manually pushing the guide sealing rod away from or close to the fishing port through the connecting rod and the hanging rod. When the guide sealing rod is arranged in the fishing cage away from the fishing port, the sealing rod can block the fish in the fishing cage from seeing the fishing port, which can effectively reduce the fish in the fishing cage from escaping from the fishing cage. When the sealing rod approaches and contacts the fishing port of the fishing cage, the sealing rod can seal the fishing port of the fishing cage, thereby preventing the moving folding fishing net from disturbing the fish in the fishing cage and escaping from the fishing cage when the folding fishing net is lifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a net structure suitable for catching fish in a fishway proposed by the utility model;

[0016] Figure 2 This is a top view of a net suitable for catching fish in a fishway proposed by the utility model;

[0017] Figure 3 This is a partial cross-sectional view of a net suitable for catching fish in a fishway proposed by the utility model;

[0018] Figure 4 The utility model provides a structural schematic diagram of a folding fishing net suitable for catching fish in a fishway.

[0019] In the figure: 1. River channel; 2. Inner hole guide block; 3. Connecting rod; 4. Hanging rod; 5. Guide sealing rod; 6. Fish block net plate 1; 7. Fish block net plate 2; 8. Fish block net plate 3; 9. Fishing cage; 10. Fish block net plate 4; 11. Folding fishing net; 12. Hanging rope; 13. Fish block net plate 5. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] Refer to the attached Figure 1-4 A net suitable for catching fish in a fishway includes a river channel 1. Fishing cages 9 above the water level are fixedly arranged on the upstream inner wall at the upper left corner and the downstream inner wall at the lower right corner of the river channel 1. A folding fishing net 11 is arranged in the fishing cage 9. The diameter of the folding fishing net 11 is slightly smaller than the inner diameter of the fishing cage 9. The cross-sections of the fishing cage 9 and the folding fishing net 11 are circular or rectangular. In this article, the cross-sections of the fishing cage 9 and the folding fishing net 11 are specifically circular.

[0023] refer to Figure 3 A fishing port with a width of 10-15 cm is provided on one side of the fishing cage 9, and one side of the fishing port in the two fishing cages 9 is respectively connected to the inner walls of both sides of the river channel 1. Figure 2, the fish swimming from upstream to downstream, under the influence of the water flow, can be well gathered in the fishing cage 9 near the downstream. Similarly, the flowing river water will also push the fish in the fishing cage 9 near the upstream to actively drive away from the fishing port. For this reason, a guide sealing rod 5 is installed in the fishing cage 9 near the upstream.

[0024] The cross-section of the guide sealing rod 5 is arched, and the distance between the lower end of the guide sealing rod 5 and the inner bottom surface of the river channel body 1 is slightly larger than the height of the folded fishing net 11 in the folded state. The top end of the guide sealing rod 5 is driven back and forth by a power source to approach or move away from the fishing port of the fishing cage 9, and the travel path of the guide sealing rod 5 is facing the fishing port of the fishing cage 9. When the sealing rod 5 approaches and contacts the fishing port of the fishing cage 9, the sealing rod 5 can close and block the fishing port of the fishing cage 9 to prevent the fish in the fishing cage 9 from escaping from the inner cavity of the fishing cage 9. When the guide sealing rod 5 is away from the fishing port and is set in the fishing cage 9, the sealing rod 5 can block the fish in the fishing cage 9 from seeing the fishing port, which can effectively reduce the fish in the fishing cage 9 from escaping from the fishing cage 9.

[0025] In this embodiment, a hanging rod 4 is provided above the two fishing cages 9. The hanging rod 4 above the fishing cage 9 near the downstream is fixedly connected to the river channel body 1 through the connecting rod 3, that is, the hanging rod 4 near the downstream and the connecting rod 3 are fixedly connected to the river channel body 1, and the hanging rod 4 above the fishing cage 9 near the upstream is fixedly connected to the guide sealing rod 5 below, and the hanging rod 4 near the upstream is horizontally slidably installed in the inner hole guide block 2 above the river channel body 1 through the connecting rod 3, and the inner hole guide block 2 and the river channel body 1 are fixedly connected, that is, the upper end of the guide sealing rod 5 is slidably installed in the inner hole guide block 2 above the river channel body 1 through the fixedly connected hanging rod 4 and the connecting rod 3, and a hanging rope 12 is connected above the two folding fishing nets 11, and the upper end of the hanging rope 12 is hung on the hanging rod 4. The power source for driving the guide sealing rod 5 is specifically manually driven, and the guide sealing rod 5 can be driven to move back and forth along the guide hole in the inner hole guide block 2 by manually connecting the connecting rod 3 and the hanging rod 4.

[0026] In this embodiment, two mutually parallel fish net plates 1 6, two mutually parallel fish net plates 2 7, two mutually parallel fish net plates 3 8, two mutually parallel fish net plates 4 10 and two mutually parallel fish net plates 5 13 are staggered on the left and right sides of the river channel body 1, which are respectively used to guide upstream and downstream fish to gradually swim to the multi-stage shrinking space, and the two ends of the fish net plate 1 6 and the end of the fish net plate 3 8 are all bent, and the fish net plate 1 6, the fish net plate 2 7, the fish net plate 3 8, the fishing cage 9, the fish net plate 4 10 and the fish net plate 5 13 are all made of steel pipes as frames, which are detachably fixed to the bottom surface of the inner cavity of the river channel body 1 with bolts, and the steel pipe frame is surrounded and covered with netting, and the fish net plates 1 6, the fish net plates 2 7, the fish net plates 3 8, the fish net plates 4 10 and the fish net plates 5 13 are all fixedly connected to the river channel body 1;

[0027] Combine Figure 2 For reference, two inclined fish-blocking net plates 16 are respectively closed and installed on the left and right sides of the upstream and downstream of the river body 1 through two fish-blocking net plates 5 13, specifically on the left side of the upstream and right side of the downstream of the river body 1, and a channel 1 for the passage of fish is reserved between the two ends of the two fish-blocking net plates 16 and the inner walls of the two sides of the river body 1. The two fish-blocking net plates 27 are parallel to the river body 1, and the two ends of the two fish-blocking net plates 27 are respectively fixedly connected to the two fish-blocking net plates 16, mainly used to reduce the fish in the cavity of the river body 1 that can swim The width of the fish net is narrowed, that is, the space for fish to swim is reduced, the head ends of the two fish blocking net plates 3 8 are fixedly connected to the left and right inner walls of the river body 1, and the two channels 1 are respectively provided between the two fish blocking net plates 3 8 and the two fish blocking net plates 1 6, and the head ends of the two fish blocking net plates 4 10 are respectively reserved between the end ends of the two fish blocking net plates 3 8 for passing fish. The head ends of the two fish blocking net plates 4 10 are respectively tilted and fixedly connected to the two fish blocking net plates 2 7, and the ends of the two fish blocking net plates 4 10 are respectively fixedly mounted on the outside of the fishing port of the fishing cage 9;

[0028] It should be added that the space between the fish blocking net plate 1 6 and the inner wall of the river channel 1 > the space between the fish blocking net plate 1 6, the fish blocking net plate 2 7 and the fish blocking net plate 3 8 > the space between the fish blocking net plate 3 8, the fish blocking net plate 4 10, the fishing cage 9 and the inner wall of the river channel 1 > the inner cavity of the fishing cage 9, which is mainly used to gradually expel the fish in the river channel 1 upward or downward into a smaller space.

[0029] The utility model can assist in guiding the upstream or downstream fish in the river channel 1 into the gradually shrinking space by guiding the two fish-blocking net plates 1, the two fish-blocking net plates 2, the two fish-blocking net plates 3, the two fish-blocking net plates 4, the 10, etc., until the fish are concentratedly guided into the small space above the folded fishing net 11 in the downstream or upstream fishing cage 9, thereby improving the capture efficiency.

[0030] When it is necessary to remove fish from the downstream fishing cage 9 that is not provided with the guide sealing rod 5, the fish in the downstream fishing cage 9 can be removed by manually pulling up the foldable fishing net 11 with the hanging rope 12, and the number of fish swimming from upstream to downstream in the river channel 1 can be known. Compared with the manual fishway monitoring method in the transmission technology, there is no need to drain water to lower the water level, and only the fish in the foldable fishing net 11 in the fishing cage 9 need to be lifted up, which makes fishway monitoring simpler.

[0031] When it is necessary to take out the fish in the fishing cage 9 with the guide sealing rod 5 provided upstream, the guide sealing rod 5 is manually pushed through the connecting rod 3 and the hanging rod 4 to seal the fishing opening of the fishing cage 9, so as to prevent the fish in the fishing cage 9 from escaping in fear. Then, the foldable fishing net 11 is stretched upwards through the hanging rope 12. The upwardly unfolded foldable fishing net 11 is used to hold the fish in the fishing cage 9. The fishing cage 9 and the fish therein are lifted out by the hanging rope 12, so that the number of fish swimming from downstream to upstream in the river channel 1 can be known. Compared with the manual fishway monitoring method in the transmission technology, there is no need to drain water to lower the water level, so the fishway monitoring is simpler.

[0032] Compared with the manual fishway monitoring method in transmission technology, this net suitable for catching fish in fishways does not need to drain water to lower the water level. The monitoring personnel only need to lift the fish in the foldable fishing net 11 in the two fishing cages 9 on both sides of the river body 1 upwards. It is not only more time-saving and labor-saving, and the monitoring is simpler, but also can reduce the risk of wading operations for the monitoring personnel.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fishing net suitable for catching fish in a fishway, comprising a river channel body (1), characterized in that: Two fish-blocking net plates (1) (6), two fish-blocking net plates (7), two fish-blocking net plates (3) (8), two fish-blocking net plates (4) (10), two fishing cages (9) and two fish-blocking net plates (5) (13) are staggeredly arranged on the left and right sides of the river channel (1) for guiding upstream and downstream fish to gradually swim to the multi-stage shrinking space, respectively. A fishing opening is provided on one side of the fishing cage (9), and one side of the fishing opening of the two fishing cages (9) is respectively sealed and connected to the inner walls on both sides of the river channel (1).

2. The net suitable for catching fish in fishway according to claim 1, characterized in that: A guide sealing rod (5) is movably installed in the fishing cage (9) near the upstream. The cross section of the guide sealing rod (5) is arched. The top end of the guide sealing rod (5) is reciprocatingly driven by a power source to move closer to or away from the fishing port of the fishing cage (9).

3. The net suitable for catching fish in fishway according to claim 2, characterized in that: A hanging rod (4) is provided above each of the two fishing cages (9); the hanging rod (4) above the fishing cage (9) close to the downstream is fixedly connected to the river channel (1) via a connecting rod (3); the hanging rod (4) above the fishing cage (9) close to the upstream is fixedly connected to a guide sealing rod (5) below, and the hanging rod (4) close to the upstream is horizontally slidably installed in an inner hole guide block (2) above the river channel (1) via a connecting rod (3).

4. The net suitable for catching fish in fishway according to claim 3, characterized in that: A folding fishing net (11) is provided in each of the two fishing cages (9), and a hanging rope (12) is connected above each of the two folding fishing nets (11). The upper ends of the two hanging ropes (12) are respectively hung on two hanging rods (4).

5. The net suitable for catching fish in fishway according to claim 4, characterized in that: The distance between the lower end of the guide sealing rod (5) and the inner bottom surface of the river channel body (1) is greater than the height of the folded fishing net (11) in the folded state.

6. The net suitable for catching fish in fishway according to claim 4, characterized in that: The cross sections of the fishing cage (9) and the folding fishing net (11) are circular or rectangular.

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