A fish winding loss prevention device with high water level amplitude

Abstract

The utility model relates to fishery equipment technical field discloses a fish class roll load loss prevention and control device of high water level amplitude, and the device includes fixed column, protection subassembly and sets up the buffer mechanism between fixed column and protection subassembly, the protection subassembly includes connecting column, rotary rod and rotatable cover set in the protection net of rotary rod, the buffer mechanism includes the first connecting plate and second connecting plate fixed in fixed column, and the first rotary board and second connecting rod rotatablely contained in it respectively. The utility model through the energy conversion of flexible net's rotary unloading and buffer mechanism, has realized the double buffer protection to fish, has solved the problem that the existing protection device structure rigidity, easy to cause secondary impact injury to fish body, can effectively protect fish, and has improved the anti -impact ability and structural stability of device itself obviously.

Description

Technical Field

[0001] This utility model relates to the field of fishery equipment technology, and in particular to a device for preventing fish entrapment losses during high water level fluctuations. Background Technology

[0002] During flood season, reservoir peak-shaving releases, or extreme rainfall, the water levels of rivers and lakes fluctuate dramatically, and the water flow velocity increases significantly. These drastic changes in hydrological conditions pose a serious threat to aquatic ecosystems, particularly fish populations. Strong currents often sweep large numbers of fish, especially juveniles and weaker species, from the main channel and carry them to the banks, shallows, or irrigation canal entrances. This phenomenon, known as "slaughter loss," is a major cause of fish mortality due to improper fishing practices.

[0003] To mitigate this problem, existing technologies typically employ physical barriers along key riverbanks. These barriers are mostly fixed metal fences, concrete piles, or rigid netting. They can, to some extent, prevent fish from being washed directly ashore, thus providing a degree of interception.

[0004] However, the aforementioned traditional rigid protection solutions have a core flaw. When fish are swept up by high-speed water currents and crash into these hard, inelastic barriers, a tremendous instantaneous impact force is generated. This direct, rigid collision not only fails to effectively protect the fish but also easily causes scale loss and internal organ damage, resulting in severe secondary injuries and significantly reducing the protective effect. Furthermore, these rigid structures are prone to deformation and damage under continuous impact from water currents and floating debris, limiting their stability and lifespan, and thus failing to provide reliable and eco-friendly protection. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fish entanglement loss prevention and control device for high water level fluctuations. It aims to improve the problems that the protective structures of existing fish entanglement loss prevention and control devices for high water level fluctuations are mostly rigid structures, which are prone to causing secondary damage to the fish due to rigid collisions when intercepting fish carried by high-speed water currents, and the devices themselves have weak impact resistance. This utility model aims to provide a fish entanglement loss prevention and control device for high water level fluctuations with an improved structure that can effectively solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fish entrapment loss prevention and control device for high water level fluctuations, comprising: a fixed column and a protective component; the protective component includes a connecting column, a rotating rod rotatably connected at both ends to the fixed column and the connecting column respectively, and a protective net rotatably sleeved on the outer periphery of the rotating rod; the device further includes a buffer mechanism.

[0007] The buffer mechanism includes a first connecting plate and a second connecting plate fixedly connected to the outer wall of the fixed column; the buffer mechanism also includes a first rotating plate rotatably housed in the first connecting plate, and a second connecting rod rotatably housed in the second connecting plate.

[0008] Furthermore, the fixed column and one end of the rotating rod are rotatably connected through the first rotating plate; the buffer mechanism also includes a spring and a first connecting rod, one end of the first connecting rod is connected to the spring, and the other end is connected to both the first rotating plate and the second connecting rod. Through this structural combination, the external impact force applied to the protective net can be effectively absorbed and transformed by the buffer mechanism.

[0009] Preferably, the device further includes a helical anchor pile, the upper end of which is fixedly connected to the bottom end of the fixed column.

[0010] Preferably, the upper end of the spiral anchor pile can also be rotatably connected to a rotating ring.

[0011] Preferably, the fixed column is also provided with a knob, which is coaxially arranged with and connected to the rotating rod.

[0012] Preferably, a handle is fixedly connected to the outer wall of the fixed column.

[0013] Preferably, the end of the spring away from the first connecting rod abuts against the inner wall of the fixed column.

[0014] Preferably, the first connecting plate and the second connecting plate are spaced apart along the height direction of the fixed column.

[0015] Preferably, the protective net is a flexible mesh structure.

[0016] This utility model has the following beneficial effects: 1. In this utility model, by setting a flexible protective net that can rotate around a rotating rod and adding a buffer mechanism composed of springs and rotating parts, the problems of rigid structure, easy impact injury to fish and weak impact resistance of existing protective devices are solved. The technical effect of providing double flexible buffer protection for fish and significantly improving the structural stability of the device is achieved. In addition, the retractable protective net can also be used for portability.

[0017] 2. This utility model, by adopting a fixing method that combines spiral anchor piles and swivel rings, and by setting a handle that is easy to grip, solves the problems of complex installation process, poor mobility, and difficulty in rapid and flexible deployment of existing protective devices. It achieves the technical effect of tool-free rapid installation and disassembly of the device, improving portability and emergency deployment capabilities. Attached Figure Description

[0018] Figure 1 This is a perspective view of a fish entrapment loss prevention and control device with high water level fluctuation proposed in this utility model; Figure 2 A schematic diagram of the protective net for a fish entrapment loss prevention device with high water level fluctuation proposed in this utility model; Figure 3 This is a schematic diagram of the connecting rod of a fish entrapment loss prevention and control device with high water level fluctuation proposed in this utility model; Figure 4 This is a schematic diagram of the first rotating plate of a fish entrapment loss prevention and control device with high water level fluctuation proposed in this utility model.

[0019] Legend: 1. Fixed column; 2. Handle; 3. Spiral anchor pile; 4. Protective component; 401. Knob; 402. Rotating rod; 403. Protective net; 404. Connecting column; 405. Rotating ring; 5. Buffer mechanism; 501. First connecting plate; 502. First rotating plate; 503. First connecting rod; 504. Spring; 505. Second connecting rod; 506. Second connecting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 4 This utility model provides a fish entrapment loss prevention device for high water level fluctuations, which aims to solve the problems that existing fish protection devices are mostly rigid structures, which are prone to causing secondary impact damage to fish, and are complicated to install and deploy and difficult to adapt to rapid application in the field environment.

[0022] The high-water-level variable-amplitude fishery equipment includes a fixed column 1, a protective component 4, and a buffer mechanism 5 connecting the fixed column 1 and the protective component 4. The buffer mechanism 5 is the core structure for achieving impact buffering. The buffer mechanism 5 includes a first connecting plate 501 and a second connecting plate 506 fixedly connected to the outer wall of the fixed column 1. The first connecting plate 501 and the second connecting plate 506 are spaced apart along the height direction of the fixed column 1. The buffer mechanism 5 also includes a first rotating plate 502 rotatably housed in the first connecting plate 501, and a second connecting rod 505 rotatably housed in the second connecting plate 506. The buffer mechanism 5 also contains a spring 504 and a first connecting rod 503. One end of the first connecting rod 503 is connected to the spring 504, and the other end of the first connecting rod 503 is connected to both the first rotating plate 502 and the second connecting rod 505. The end of the spring 504 away from the first connecting rod 503 abuts against the inner wall of the fixed column 1. Thus, when an external force acts on the first rotating plate 502 or the second connecting rod 505, the spring 504 can be compressed by the first connecting rod 503, thereby achieving energy absorption and conversion. The protective component 4 is a protective structure that comes into direct contact with fish. The protective component 4 includes a connecting post 404, a rotating rod 402, and a protective net 403. The two ends of the rotating rod 402 are rotatably connected to the fixed post 1 and the connecting post 404, respectively. The protective net 403 is a flexible mesh structure and is rotatably fitted around the outer periphery of the rotating rod 402. Crucially, the end of the rotating rod 402 closest to the fixed post 1 is rotatably connected to the fixed post 1 through the first rotating plate 502 in the aforementioned buffer mechanism 5. This structure allows the protective net 403 to be directly transmitted to the first rotating plate 502 via the rotating rod 402 when it is subjected to external impact, thereby driving the entire buffer mechanism 5 to produce a buffering action.

[0023] The upper end of the helical anchor pile 3 is fixedly connected to the bottom end of the fixed column 1. The lower part of the helical anchor pile 3 has a helical blade structure, which allows the entire device to be easily drilled into the mud of the riverbank by rotation. The upper end of the helical anchor pile 3 is also rotatably connected to a rotating ring 405. The operator can drive the helical anchor pile 3 and the fixed column 1 fixed to it to rotate together by turning the rotating ring 405, thereby realizing the quick installation or disassembly of the entire device. To further enhance the portability and ease of operation of the device, a handle 2 is also fixedly connected to the outer wall of the fixed column 1. During installation, disassembly or transportation, the operator can apply auxiliary force or stabilize the device by holding the handle 2. To enable the storage function of the protective net 403, a knob 401 is also provided on the fixed post 1. The knob 401 is coaxially arranged and connected to the rotating rod 402. When the recycling device is needed, rotating the knob 401 will drive the rotating rod 402 to rotate, thereby winding the flexible protective net 403 around the outer circumference of the rotating rod 402 like a roll and storing it inside the fixed post 1.

[0024] As a preferred embodiment of the buffer mechanism 5, the first connecting plate 501 and the second connecting plate 506 are two independent components, and are distributed vertically and horizontally along the length of the fixed column 1. This spaced arrangement provides stable and sufficient installation and movement space for internal components such as the first rotating plate 502, the second connecting rod 505 and the spring 504, ensuring that the buffer mechanism 5 can smoothly deform and rotate when subjected to force. As a further optimization of the internal structure of the buffer mechanism 5, the overall contour of the first rotating plate 502 is adapted to the internal cavity of the first connecting plate 501, and the overall contour of the second connecting rod 505 is adapted to the internal cavity of the second connecting plate 506, thereby achieving rotational guidance; the first connecting rod 503, as a connecting member, ensures that when the spring 504 undergoes elastic deformation, the force generated can be simultaneously and evenly transmitted to the first rotating plate 502 and the second connecting rod 505, so that they rotate in coordination, thereby effectively converting the linear impact force into rotational kinetic energy; As a preferred embodiment of the fixing component, please refer to Figure 1 The swivel ring 405 is set at the top of the spiral anchor pile 3, and its size design makes it easy for people to hold and exert force. This makes the installation and disassembly of the entire device unnecessary and enhances the device's rapid response capability in the field. As a preferred embodiment of the protective net 403, the protective net 403 is made of a high-strength and corrosion-resistant flexible material, such as nylon net or polyethylene net, which can ensure sufficient structural strength to resist the impact of water flow, and minimize collision damage to fish due to its flexible characteristics.

[0025] Working principle: During installation, the operator can hold the handle 2 stabilizing device and turn the rotating ring 405 at the same time. The rotating ring 405 drives the spiral anchor pile 3 to rotate and drill into the mud on the bank until the fixed column 1 and the connecting column 404 are firmly erected in the predetermined position, thereby completing the rapid deployment of the entire device. When the rising water current carries the fish toward the shore and into the protective net 403, the first layer of buffering occurs. Since the protective net 403 is made of flexible material and is rotatably fitted around the outer periphery of the rotating rod 402, most of the impact force at the moment of contact is converted into energy that drives the protective net 403 to rotate around the rotating rod 402, effectively avoiding rigid collisions with the fish. If the impact force is large, it will be transmitted to the rotating rod 402 through the protective net 403, and further transmitted to the first rotating plate 502 connected to the rotating rod 402, thereby activating the second buffer mechanism. The first rotating plate 502 rotates after being subjected to force, and pulls the spring 504 through the first connecting rod 503. At the same time, the first connecting rod 503 will also drive the second connecting rod 505 to rotate in coordination. During this process, the spring 504 undergoes elastic deformation, absorbing most of the impact kinetic energy and converting it into its own elastic potential energy. The rotation of the first rotating plate 502 and the second connecting rod 505 disperses and converts the linear impact force. Through the coordinated action of the entire buffer mechanism 5, the impact force is effectively unloaded and buffered, protecting the safety of the fish and the device itself. After use, the operator can turn the knob 401, which drives the rotating rod 402 to rotate through the transmission mechanism, and roll up and store the protective net 403; then turn the rotating ring 405 in the opposite direction to unscrew the spiral anchor pile 3 from the soil, and then easily move the entire device away through the handle 2.

Claims

1. A device for preventing fish entrapment losses under high water level fluctuations, comprising a fixed column (1) and a protective component (4); the protective component (4) comprises a connecting column (404), a rotating rod (402) rotatably connected at both ends to the fixed column (1) and the connecting column (404), and a protective net (403) rotatably sleeved on the outer periphery of the rotating rod (402). The device is characterized in that... The device also includes a buffer mechanism (5); The buffer mechanism (5) includes a first connecting plate (501) and a second connecting plate (506) fixedly connected to the outer wall of the fixed column (1); The buffer mechanism (5) further includes a first rotating plate (502) rotatably housed in the first connecting plate (501), and a second connecting rod (505) rotatably housed in the second connecting plate (506); the fixed column (1) and one end of the rotating rod (402) are rotatably connected through the first rotating plate (502); The buffer mechanism (5) further includes a spring (504) and a first connecting rod (503), one end of the first connecting rod (503) is connected to the spring (504), and the other end is connected to the first rotating plate (502) and the second connecting rod (505).

2. The fish entrapment loss control device with high water level fluctuation as described in claim 1, characterized in that, The device also includes a spiral anchor pile (3), the upper end of which is fixedly connected to the bottom end of the fixed column (1).

3. The fish entrapment loss control device with high water level fluctuation as described in claim 2, characterized in that, The upper end of the spiral anchor pile (3) is also rotatably connected to a swivel ring (405).

4. The fish entrapment loss control device with high water level fluctuation as described in claim 1, characterized in that, A knob (401) is also provided on the fixed column (1), and the knob (401) is coaxially arranged and connected to the rotating rod (402) for transmission.

5. The fish entrapment loss control device for high water level fluctuations according to claim 1, characterized in that, A handle (2) is fixedly connected to the outer wall of the fixed column (1).

6. The fish entrapment loss control device with high water level fluctuation as described in claim 1, characterized in that, The end of the spring (504) away from the first connecting rod (503) abuts against the inner wall of the fixed column (1).

7. The fish entrapment loss control device with high water level fluctuation as described in claim 1, characterized in that, The first connecting plate (501) and the second connecting plate (506) are spaced apart along the height direction of the fixed column (1).

8. The fish entrapment loss control device with high water level fluctuation as described in claim 1, characterized in that, The protective net (403) is a flexible mesh structure.

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