A fishing tool for gathering fish with different drop levels and in both upstream and downstream directions

Abstract

The present invention relates to a fish collecting device for upstream and downstream fish, which is used for fishing at a cofferdam and comprises a bracket, a downstream fish guide plate and an upstream fish guide plate; the bracket is formed with adjacent fish guide positions and fish collecting positions, and the fish collecting position is provided with a storage device for accommodating fish; the downstream fish guide plate is arranged on the bracket and located at the fish guide position, the downstream fish guide plate is tilted downward in a direction close to the storage device, and the upper end of the downstream fish guide plate is used to be placed below the water outlet of the cofferdam, and the lower end corresponds to the storage device; the upstream fish guide plate is arranged on the bracket and located at the fish guide position, the upstream fish guide plate is tilted upward in a direction close to the storage device, and the lower end of the upstream fish guide plate is used to extend into the water below the weir, and the upper end is used to extend above the water surface and corresponds to the storage device. This solution can simultaneously capture downstream fish and upstream fish, and the fish all swim into the storage device by themselves, which is convenient for manual capture, thereby saving manpower and material resources and reducing costs while ensuring capture efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of fishing auxiliary equipment, in particular to a fishing tool for gathering fish with different drop levels, both upstream and downstream. Background Art

[0002] To fully utilize water resources, many streams now use Great Wall-style cofferdams. While these weirs raise water levels, utilizing water resources and facilitating access, fishing in these environments presents significant challenges. Fishing typically relies on baiting or trapping, which consumes significant material and labor resources and is costly.

[0003] For example, patent CN 209711179 U discloses a fishing net that traps fish through mesh holes. However, the fishing net has a large span on the water surface, is time-consuming to manually deploy, and requires manual removal of captured fish from the mesh holes one by one, which is cumbersome. Summary of the Invention

[0004] In view of this, it is necessary to provide a fish gathering device with a difference in height between upstream and downstream to solve the technical problem that the commonly used fishing methods in the prior art are mostly carried out by feeding or encirclement, which consumes a lot of material and manpower and is costly.

[0005] The present invention provides a fish gathering device with a drop in both upstream and downstream directions, which is used for fishing at a cofferdam and comprises:

[0006] The bracket is formed with adjacently arranged fish guiding positions and fish collecting positions, wherein the fish collecting positions are provided with a receiving device for accommodating fish;

[0007] a downstream fish guide plate, provided on the bracket and located at the fish guide position, the downstream fish guide plate being tilted downward in a direction close to the receiving device, with the upper end of the downstream fish guide plate being placed below the water outlet of the cofferdam and the lower end corresponding to the receiving device, so that fish located at the cofferdam can swim into the receiving device via the downstream fish guide plate; and

[0008] An upstream fish guide plate is provided on the bracket and located at the fish guide position. The upstream fish guide plate is tilted upward in a direction close to the storage device, and the lower end of the upstream fish guide plate is used to extend into the water below the weir, and the upper end is used to extend out of the water surface and correspond to the storage device, so that the fish in the water below the weir can swim upstream from the upstream fish guide plate to the storage device.

[0009] Optionally, both ends of the downstream fish guide plate in the width direction are bent upward to form an arc-shaped concave surface on the upper side of the downstream fish guide plate; and / or,

[0010] The bracket is telescopically arranged in the up and down directions.

[0011] Optionally, a plurality of first swimming channels and second swimming channels that are alternately connected in sequence are formed from the lower end to the upper end of the upstream fish guide plate, and each first swimming channel is arranged at an angle to the adjacent second swimming channel.

[0012] Optionally, the upper end of each first swimming channel is bent downward toward the receiving device to form the second swimming channel.

[0013] Optionally, the inclination angle of the first swimming path is α, and the second swimming path is arranged horizontally, wherein 15°≤α≤30°.

[0014] Optionally, the downstream fish guide plate includes a first downstream fish guide plate and a second downstream fish guide plate connected in sequence, the first downstream fish guide plate is provided on the bracket, and the second downstream fish guide plate is movably provided along the length direction so that the length of the downstream fish guide plate is adjustable; and / or,

[0015] The inclination angle of the downstream fish guide plate is adjustable.

[0016] Optionally, the downstream fish guide plate is provided with a plurality of water holes.

[0017] Optionally, the downstream fish guide plate and the upstream fish guide plate are spaced apart in the vertical direction;

[0018] The surface of the upstream fish guide plate is provided with a waterproof layer, or the upstream fish guide plate is made of plastic.

[0019] Optionally, the storage device includes a fish collecting net provided on the bracket, the opening of the fish collecting net faces the fish guide position, and is arranged corresponding to the lower end of the downstream fish guide plate and the upper end of the upstream fish guide plate.

[0020] Optionally, the storage device also includes a transition fish guide plate, one end of which corresponds to the lower end of the downstream fish guide plate and the upper end of the upstream fish guide plate, and the other end extends into the opening of the fish collecting net, and the transition fish guide plate is arranged to be tilted downward in the direction close to the fish collecting net.

[0021] Optionally, the downstream fish guide plate and the upstream fish guide plate are spaced apart in the vertical direction;

[0022] The vertical projection of the lower end of the downstream fish guide plate falls on the transition fish guide plate, and the upper end of the transition fish guide plate is connected to the upper end of the upstream fish guide plate.

[0023] Compared with the prior art, the fish collecting device for upstream and downstream fish provided by the present invention has a bracket inserted into the bottom water layer downstream of the cofferdam when in use, and the downstream fish guide plate is arranged corresponding to the water outlet of the cofferdam, so that the downstream fish swimming downstream from the water outlet of the cofferdam can enter the storage device through the downstream fish guide plate; and the upstream fish in the water downstream of the cofferdam can also enter the storage device through the upstream fish guide plate, so that the downstream fish and the upstream fish can be caught at the same time, and the fish all swim into the storage device by themselves, which is convenient for manual acquisition. While ensuring the catching efficiency, it saves manpower and material resources and reduces costs.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic structural diagram of a first embodiment of the present invention's upstream and downstream fish gathering device;

[0027] Figure 2 for Figure 1 Schematic diagram of the structure of the fish gathering gear with medium drop and upstream and downstream fish at the cofferdam;

[0028] Figure 3 for Figure 1 Schematic diagram of the structure of the middle countercurrent fish guide plate;

[0029] Figure 4 This is a structural schematic diagram of the second embodiment of the fish gathering device for upstream and downstream fish provided by the present invention (installed at the cofferdam).

[0030] Description of reference numerals:

[0031] 100- downstream and upstream fish collecting equipment, 1- bracket, 1a- fish guide position, 1b- fish collecting position, 2- downstream fish guide plate, 3- upstream fish guide plate, 31- first swimming path, 32- second swimming path, 4- storage device, 41- fish collecting net, 41a- opening, 42- transition fish guide plate, 200- cofferdam, 210- outlet, 220- downstream of cofferdam, 300- green plants. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0033] See Figures 1 to 3 The present invention relates to a fish collecting device for upstream and downstream fishes, which is used for fishing at a cofferdam 200. The device comprises a bracket 1, a downstream fish guide plate 2 and an upstream fish guide plate 3. The bracket 1 is formed with a fish guide position 1a and a fish collecting position 1b arranged adjacent to each other. The fish collecting position 1b is provided with a receiving device 4 for accommodating fishes. The downstream fish guide plate 2 is arranged on the bracket 1 and is located at the fish guide position 1a. The downstream fish guide plate 2 is tilted downward in a direction close to the receiving device 4, and the upper end of the downstream fish guide plate 2 is used to be placed below the water outlet 210 of the cofferdam 200. The lower end of the upstream fish guide plate 3 is used to extend into the water below the weir, and the upper end is used to extend out of the water surface and correspond to the receiving device 4, so that the fish in the water below the weir can swim upstream from the upstream fish guide plate 3 to the receiving device 4.

[0034] The fish collecting device for upstream and downstream fish provided by the present invention has a drop, and when in use, the bracket 1 is inserted into the bottom water layer downstream of the cofferdam 200, and the downstream fish guide plate 2 is set corresponding to the water outlet 210 of the cofferdam 200, so that the downstream fish swimming downstream from the water outlet 210 of the cofferdam 200 can enter the storage device 4 through the downstream fish guide plate 2; and the upstream fish in the water 220 downstream of the cofferdam can also enter the storage device 4 through the upstream fish guide plate 3, so that the downstream fish and the upstream fish can be caught at the same time, and both the downstream fish and the upstream fish can swim into the storage device 4 by themselves, which is convenient for manual acquisition, thereby saving manpower and material resources and reducing costs while ensuring the catching efficiency.

[0035] It can be understood that the downstream fish guide plate 2 is tilted downwardly in the direction close to the receiving device 4, that is, the upper end and the lower end of the downstream fish guide plate 2 are respectively located at the two ends in the length direction.

[0036] Furthermore, in order to prevent downstream fish from accidentally sliding off the ends of the downstream fish guide plate 2 in the width direction, thereby reducing the capture efficiency, in this embodiment, the ends of the downstream fish guide plate 2 in the width direction are bent upward to form an arc-shaped concave surface on the upper side of the downstream fish guide plate 2. In this solution, by setting the upper side of the downstream fish guide plate 2 into the arc-shaped concave surface as described above, downstream fish are prevented from sliding off the side of the downstream fish guide plate 2, so that downstream fish that fall on the downstream fish guide plate 2 can smoothly enter the storage device 4, thereby improving the fish capture efficiency.

[0037] It should be noted that when the central angle corresponding to the arc-shaped concave surface is too large, it is difficult for downstream fish to land on the upper side of the downstream fish guide plate 2; and when the central angle corresponding to the arc-shaped concave surface is too small, it is difficult to effectively prevent downstream fish from sliding off the upstream fish guide plate 2. Specifically, in this embodiment, when the central angle corresponding to the arc-shaped concave surface is greater than or equal to 60° and less than or equal to 90°, it can both facilitate downstream fish to land on the downstream fish guide plate 2 and effectively prevent downstream fish from sliding.

[0038] In one embodiment, the bracket 1 is vertically retractable, allowing the downstream fish guide plate 2 and the upstream fish guide plate 3 to be adjusted to appropriate heights according to specific circumstances. The distance between the downstream fish guide plate 2 and the upstream fish guide plate 3 can also be adjusted, thereby improving versatility. Specifically, the bracket 1 includes a first bracket, a second bracket, and a third bracket connected in sequence vertically. The first bracket is vertically movable relative to the second bracket, and the second bracket is vertically movable relative to the third bracket. The downstream fish guide plate 2 is disposed on the first bracket, the upstream fish guide plate 3 is disposed on the second bracket, and the lower end of the third bracket is disposed underwater.

[0039] Generally speaking, it is difficult for upstream fish to swim upstream along the straight, inclined path of the upstream fish guide 3. To reduce this difficulty, in this embodiment, a plurality of alternating first and second swimming paths 31, 32 are formed from the lower end to the upper end of the upstream fish guide 3. Each first swimming path 31 is arranged at an angle to the adjacent second swimming path 32. In this embodiment, upstream fish swim upstream along the first and second swimming paths 31, 32. Therefore, the angled arrangement of the first and second swimming paths 31, 32 reduces the difficulty for upstream fish to climb the slope, making it easier for them to pass through the upstream fish guide 3.

[0040] It is understood that the first and second swimming channels 31, 32 can be arranged at an angle within a plane to form an S-shaped channel within the plane to facilitate upstream fish climbing, or other configurations are possible. In this embodiment, the upper end of each first swimming channel 31 is bent downward toward the storage device 4 to form the second swimming channel 32. This allows upstream fish to pass through the first swimming channel 31 with a relatively large slope upstream and then pass through the second swimming channel 32 with a smaller slope. This reduces the force required for upstream fish to climb the slope, facilitating their upstream entry into the storage device 4.

[0041] Specifically, when the inclination angle of the first channel 31 is too large, it becomes more difficult for upstream fish to climb the slope, affecting their climbing efficiency. On the other hand, when the inclination angle of the first channel 31 is too small, it does not conform to the fish's habit of swimming upstream. In this embodiment, the inclination angle α of the first channel 31 satisfies the requirement of 15°≤α≤30°. This improves the climbing efficiency of upstream fish while also satisfying their upstream habits. Furthermore, in this embodiment, the second channel 32 is horizontally arranged so that upstream fish can rest appropriately when climbing the slope from the first channel 31 to the second channel 32, thereby preventing them from sliding off the upstream fish guide plate, thereby ensuring their passage rate.

[0042] In one embodiment, the downstream fish guide plate 2 includes a first downstream fish guide plate and a second downstream fish guide plate connected in sequence. The first downstream fish guide plate is provided on the bracket 1, and the second downstream fish guide plate is movably provided along the length direction so that the length of the downstream fish guide plate 2 can be adjusted. This allows the downstream fish guide plate 2 to be applicable to the water outlet 210 of the cofferdam 200 of different widths, thereby improving the probability of catching downstream fish. Specifically, the upper end of the first downstream fish guide plate is correspondingly provided below the water outlet 210 of the cofferdam 200, and the lower end of the second downstream fish guide plate is provided corresponding to the storage device 4.

[0043] In addition, in one embodiment, the bracket 1 includes a left bracket and a right bracket arranged in sequence along the horizontal direction, wherein the left bracket is hingedly connected to the upper end of the downstream fish guide plate 2, and the right bracket is hingedly connected to the lower end of the downstream fish guide plate 2. At least one of the left bracket and the right bracket is movably arranged in the up and down direction so that the inclination angle of the downstream fish guide plate 2 can be adjusted to adapt to different water flow conditions so as to cope with more complex environments.

[0044] Furthermore, in order to reduce the water flow on the downstream fish guide plate 2 so that it can carry heavier downstream fish, in this embodiment, the downstream fish guide plate 2 is provided with a plurality of water holes. In this way, the water flow falling on the downstream fish guide plate 2 from the water outlet 210 of the cofferdam 200 can partially flow directly downward through the water holes. On the one hand, it can reduce the amount of water on the downstream fish guide plate 2 to increase its fish-carrying capacity, and can prevent the downstream fish from swimming away from the two ends of the downstream fish guide plate 2 in the width direction due to excessive water flow on the downstream fish guide plate 2; on the other hand, it can also prevent excessive water flow from the downstream fish guide plate 2 to the storage device 4, which may impact and damage the storage device 4.

[0045] Furthermore, the downstream fish guide plate 2 and the upstream fish guide plate 3 are spaced apart in the vertical direction; the surface of the upstream fish guide plate 3 is provided with a waterproof layer, or the upstream fish guide plate 3 is made of plastic. In this solution, the downstream fish guide plate 2 and the upstream fish guide plate 3 are spaced apart in the vertical direction, so that the water flowing from the water hole of the downstream fish guide plate 2 falls on the upstream fish guide plate 3; and the upstream fish guide plate 3 is made of a waterproof material, so that more water can be gathered on its upper side, so that the upstream fish can better swim upstream from the upstream fish guide plate. Preferably, in this embodiment, the upstream fish guide plate 3 is made of a waterproof plastic material, so as to prevent water penetration while reducing the weight of the downstream and upstream fish collecting device 100 and facilitating its movement.

[0046] Also, see Figure 4 In one embodiment, in order to make the upstream fish guide plate 3 more natural, green plants 300 can be set on both sides of the first swimming channel 31 and the second swimming channel 32 to reduce the vigilance of upstream fish and increase the passing rate of fish swimming upstream.

[0047] Furthermore, the storage device 4 includes a fish collecting net 41 mounted on the bracket 1. The opening 41a of the fish collecting net 41 faces the fish guide position 1a and is positioned corresponding to the lower end of the downstream fish guide plate 2 and the upper end of the upstream fish guide plate 3. In this embodiment, the storage device 4 is configured as a fish collecting net 41, which can effectively collect fish and allow them to be placed in natural water without causing harm to the fish, effectively keeping the fish fresh. It also has a simple structure and saves costs.

[0048] It is understood that a single fish collecting net 41 can be provided, and by enlarging the opening 41a of the fish collecting net 41 to correspond to both the downstream fish guide plate 2 and the upstream fish guide plate 3, two fish collecting nets 41 can also be provided, one corresponding to the downstream fish guide plate 2 and the other corresponding to the upstream fish guide plate 3. In this embodiment, the opening 41a of the fish collecting net 41 is reduced to reduce the probability of fish escaping from the fish collecting net 41 and to reduce costs. The storage device 4 in this solution also includes a transition fish guide plate 42, one end of which corresponds to the lower end of the downstream fish guide plate 2 and the upper end of the upstream fish guide plate 3, and the other end extends into the opening 41a of the fish collecting net 41. The transition fish guide plate 42 is tilted downwardly in the direction close to the fish collecting net 41. Thus, while reducing the opening 41a of the fish collecting net 41, it can correspond to both the downstream fish guide plate 2 and the upstream fish guide plate 3, allowing the fish collecting net 41 to effectively collect fish.

[0049] In this embodiment, the transition fish guide plate 42 may also be provided with a plurality of through holes in the vertical direction, so that the water flowing through the transition fish guide plate 42 can flow down from the through holes, thereby facilitating the fish to enter the fish collecting net 41 .

[0050] Furthermore, to prevent the downstream fish guide plate 2 from tilting too sharply, making it difficult to intercept downstream fish, in this embodiment, the downstream fish guide plate 2 and the upstream fish guide plate 3 are spaced apart in the vertical direction; the vertical projection of the lower end of the downstream fish guide plate 2 falls on the transition fish guide plate 42, and the upper end of the transition fish guide plate 42 is connected to the upper end of the upstream fish guide plate 3. This reserves space for adjusting the tilt angle of the downstream fish guide plate 2, allowing it to be set according to actual needs, and also improves the integration of the downstream and upstream fish collecting device 100, making it easier to move.

[0051] Specifically, in this embodiment, both the downstream fish guide plate 2 and the upstream fish guide plate 3 are movably connected to the bracket 1, allowing the tilt angles of the downstream fish guide plate 2 and the upstream fish guide plate 3 to be appropriately adjusted based on the water volume and fish size. In one embodiment, the downstream fish guide plate 2 and the upstream fish guide plate 3 are detachably connected to each other via screw connectors. To adjust the angle, the screw connectors are removed and, after the angle is adjusted, reinstalled to secure the fish accordingly.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A fish-collecting device with a different drop in the upstream and downstream direction, used for fishing at a cofferdam, characterized in that: It includes: The bracket is formed with a fish guiding position and a fish collecting position arranged adjacent to each other, and the fish collecting position is provided with a receiving device for accommodating fish; a downstream fish guide plate, provided on the bracket and located at the fish guide position, the downstream fish guide plate being tilted downwardly in a direction close to the receiving device, and the upper end of the downstream fish guide plate being used to be placed below the water outlet of the cofferdam, and the lower end of the downstream fish guide plate corresponding to the receiving device, so that fish located at the cofferdam can swim into the receiving device via the downstream fish guide plate; as well as, a countercurrent fish guide plate, provided on the bracket and located at the fish guide position, the countercurrent fish guide plate being arranged to be inclined upward in a direction close to the receiving device, and the lower end of the countercurrent fish guide plate being used to extend into the water below the weir, and the upper end being used to extend above the water surface and corresponding to the receiving device, so that fish in the water below the weir can swim upstream from the countercurrent fish guide plate into the receiving device; Wherein, a plurality of first swimming channels and second swimming channels are formed from the lower end to the upper end of the upstream fish guide plate, and each first swimming channel is arranged at an angle to the adjacent second swimming channel; The upper end of each first swimming channel is bent downward toward the receiving device to form the second swimming channel; The downstream fish guide plate is provided with a plurality of water holes; The downstream fish guide plate and the upstream fish guide plate are arranged at intervals in the vertical direction; The surface of the upstream fish guide plate is provided with a waterproof layer, or the upstream fish guide plate is made of plastic.

2. The fishing tool for gathering fish in both upstream and downstream directions according to claim 1, characterized in that: Both ends of the downstream fish guide plate in the width direction are bent upward to form an arc-shaped concave surface on the upper side of the downstream fish guide plate; and / or, The bracket is telescopically arranged in the up and down directions.

3. The fishing tool for gathering fish with different drop levels in both upstream and downstream directions according to claim 1, characterized in that: The downstream fish guide plate comprises a first downstream fish guide plate and a second downstream fish guide plate connected in sequence, the first downstream fish guide plate is arranged on the bracket, and the second downstream fish guide plate is movably arranged along the length direction so that the length of the downstream fish guide plate is adjustable; and / or, The inclination angle of the downstream fish guide plate is adjustable.

4. The fishing tool for gathering fish in both upstream and downstream directions according to claim 1, characterized in that: The storage device includes a fish collecting net arranged on the bracket, the opening of the fish collecting net faces the fish guide position, and is arranged corresponding to the lower end of the downstream fish guide plate and the upper end of the upstream fish guide plate.

5. The fishing tool for gathering fish in both upstream and downstream directions according to claim 4, characterized in that: The storage device also includes a transition fish guide plate, one end of which corresponds to the lower end of the downstream fish guide plate and the upper end of the upstream fish guide plate, and the other end extends into the opening of the fish collecting net, and the transition fish guide plate is arranged to be tilted downward in the direction close to the fish collecting net.

6. The fishing tool for gathering fish in both upstream and downstream directions according to claim 5, characterized in that: The downstream fish guide plate and the upstream fish guide plate are arranged at intervals in the vertical direction; The vertical projection of the lower end of the downstream fish guide plate falls on the transition fish guide plate, and the upper end of the transition fish guide plate is connected to the upper end of the upstream fish guide plate.

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