Trawl device with four meshes

Abstract

The utility model discloses a trawl device with four meshes, which comprises an oval frame, a transverse support and a longitudinal support are arranged on the oval frame, and the transverse support and the longitudinal support are used for dividing an inner cavity of the oval frame into a first mesh, a second mesh, a third mesh and a fourth mesh. A first plastic floating ball, a second plastic floating ball, a third plastic floating ball and a fourth plastic floating ball are arranged on the side faces, corresponding to the first net piece, the second net piece, the third net piece and the fourth net piece, of the oval frame respectively. The two sides of the oval frame are further connected with retractable rods which are used for being connected with a tugboat. The trawl device is firm in structure, long in service life, good in fishing effect and capable of effectively increasing the fishing number of bottom layer movable fish bodies, the damage degree of the fish bodies due to crowding stress can be reduced through the four net pieces, the fish body quality is guaranteed, and the fish body survival rate is increased.

Description

Technical Field

[0001] This utility model belongs to the field of fishing device technology, and specifically relates to a trawl net device with 4 net sections. Background Technology

[0002] Currently, existing aquaculture waters use trawls, which are mostly single-sheet nets with only upper and lower lines. During use, the fish harvesting effect is not good. When trawls are used to catch bottom-dwelling fish, these fish easily escape, resulting in poor harvesting efficiency, especially in aquaculture waters with uneven bottoms where the number of escaped bottom-dwelling fish increases, making trawl harvesting ineffective and requiring combination with manual harvesting methods, increasing labor intensity. In larger-scale aquaculture waters, harvesting becomes more difficult, requiring the use of multiple layers of trawls combined with trapping and manual harvesting, but this still results in high labor intensity and harvesting effort, exacerbating the difficulty of harvesting and the degree of damage to the fish. Utility Model Content

[0003] This utility model provides a trawler with four net sections. The main innovation of this device is that it adds four net sections that can be used to retain fish. During the trawl fishing process, the captured fish can be temporarily stored in the four net sections, reducing the number of fish that escape. The retrieval rod is connected to the tugboat, extending the trawler to the bottom of the aquaculture pond, which can induce fish to swim into the net sections, making it more suitable for the fishing of bottom-dwelling fish (such as mandarin fish and yellow catfish).

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] This utility model embodiment provides a trawling device with four net panels, including an elliptical frame (1). A horizontal support (3) and a vertical support (2) are provided on the elliptical frame (1). The horizontal support (3) and the vertical support (2) are used to divide the inner cavity of the elliptical frame (1) into a first net panel (4-1), a second net panel (4-2), a third net panel (4-3), and a fourth net panel (4-4). A first plastic buoy (5-1), a second plastic buoy (5-2), a third plastic buoy (5-3), and a fourth plastic buoy (5-4) are respectively provided on the sides of the elliptical frame (1) corresponding to the first net panel (4-1), the second net panel (4-2), the third net panel (4-3), and the fourth net panel (4-4). A retraction rod (6) is also connected to both sides of the elliptical frame (1). The retraction rod (6) is used to connect with a tugboat.

[0006] In one optional embodiment of this utility model, the distance between the first plastic float (5-1) and the second plastic float (5-2) is 0.5m to 2m, and the distance between the third plastic float (5-3) and the fourth plastic float (5-4) is 0.5m to 2m.

[0007] In an optional embodiment of this utility model, the mesh size of the first mesh (4-1), the second mesh (4-2), the third mesh (4-3), and the fourth mesh (4-4) is 0.5cm to 5cm.

[0008] Compared with the prior art, this utility model provides a trawl device with four net panels, which has the following beneficial effects: The trawl device has a robust structure, long service life, and better fishing effect, effectively increasing the number of bottom-dwelling fish caught. During the trawl, the fish can be contained within the net panels, effectively reducing fish escape and increasing the catch retention rate, increasing the catch rate from less than 10% in the conventional method to over 30%. This trawl device reduces the number of fish that escape during the fishing process, while effectively reducing labor intensity and the number of operators by 2-4 people; the high catch rate shortens the overall fishing time by more than half, reduces fishing intensity, and lowers fishing costs by 30%; moreover, during the fishing process, the retrieval rod is connected to the tugboat, extending the trawl device to the bottom of the aquaculture pond, which can induce fish to swim into the net panels, making it more suitable for catching bottom-dwelling fish (such as mandarin fish and yellow catfish), shortening the fishing operation time, and the four net panels can reduce the damage caused by fish crowding stress, ensuring fish quality and increasing fish survival rate. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of a trawling net device with four net panels provided in an embodiment of this application. Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0012] like Figure 1As shown, this embodiment of the utility model provides a trawl net device with four net panels, including an elliptical frame 1. A horizontal support 3 and a vertical support 2 are provided on the elliptical frame 1. The horizontal support 3 and the vertical support 2 are used to divide the inner cavity of the elliptical frame 1 into a first net panel 4-1, a second net panel 4-2, a third net panel 4-3, and a fourth net panel 4-4. A first plastic buoy 5-1, a second plastic buoy 5-2, a third plastic buoy 5-3, and a fourth plastic buoy 5-4 are respectively provided on the sides of the elliptical frame 1 corresponding to the first net panel 4-1, the second net panel 4-2, the third net panel 4-3, and the fourth net panel 4-4. Retraction rods 6 are also connected to both sides of the elliptical frame 1 for connection to a tugboat. In this embodiment, the horizontal support 3 and the vertical support 2 extend to the bottom of the elliptical frame 1.

[0013] The distance between the first plastic buoy 5-1 and the second plastic buoy 5-2 is 0.5m to 2m, and the distance between the third plastic buoy 5-3 and the fourth plastic buoy 5-4 is 0.5m to 2m. The mesh size of the first net 4-1, the second net 4-2, the third net 4-3, and the fourth net 4-4 is 0.5cm to 5cm.

[0014] This trawler boasts a robust structure, long service life, and superior fishing performance. It effectively increases the catch of bottom-dwelling fish, trapping them within the net during trawls to minimize escape and maximize catch volume. The catch rate increases from less than 10% to over 30%. This trawler reduces fish escape during fishing and significantly lowers labor intensity, reducing the number of operators by 2-4. Its high catch rate and overall fishing time are reduced by more than half, lowering fishing intensity and costs by 30%. Furthermore, the connection between the trawler and the retrieval rod extends the trawl to the bottom of the pond, inducing fish to swim into the net, making it particularly suitable for bottom-dwelling fish (such as mandarin fish and yellow catfish). The shortened fishing time and the four net sections reduce the risk of overcrowding and stress, ensuring fish quality and increasing survival rates.

[0015] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A trawl net arrangement with a net sheet, characterized in that The application relates to an oval frame (1) provided with transverse supports (3) and longitudinal supports (2) for dividing the inner cavity of the oval frame (1) into a first mesh (4-1), a second mesh (4-2), a third mesh (4-3) and a fourth mesh (4-4); the oval frame (1) is provided with a first plastic floating ball (5-1), a second plastic floating ball (5-2), a third plastic floating ball (5-3) and a fourth plastic floating ball (5-4) on the side surfaces of the first mesh (4-1), the second mesh (4-2), the third mesh (4-3) and the fourth mesh (4-4) respectively; and the oval frame (1) is further connected with a retractable rod (6) for being connected with a tugboat.

2. A trawl net assembly according to claim 1, wherein, The interval between the first plastic floating ball (5-1) and the second plastic floating ball (5-2) is 0.5-2 m, and the interval between the third plastic floating ball (5-3) and the fourth plastic floating ball (5-4) is 0.5-2 m.

3. A trawl net assembly according to claim 1, wherein the net panels are arranged in four pairs, each pair comprising a pair of front panels and a pair of rear panels. The mesh range of the first mesh (4-1), the second mesh (4-2), the third mesh (4-3) and the fourth mesh (4-4) is 0.5-5 cm.

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