Bottom-setting type set gill net device

Abstract

The invention discloses a sinking bottom gill net device, which aims to provide a device that can effectively prevent the mesh holes of the bottom gill net from being deformed by the buoyancy pulling effect of the float, so that the actual passing size of the mesh holes becomes smaller, which is not conducive to Bottom gillnet devices for juvenile fish escape problems. It includes a bottom gillnet, which includes an upper mesh, a lower mesh, a rectangular mesh between the upper mesh and the lower mesh, and several vertical meshes equally spaced between the upper mesh and the lower mesh. Connecting rope, the upper end of the vertical connecting rope is connected with the upper end of the net, and the lower end is connected with the lower net. The upper end of the vertical connecting rope is provided with a float, and the lower end of the vertical connecting rope is provided with a hammer device. The sum of the buoyancy of the floats is less than the sum of the gravity of the bottom gillnet and the weight device, and the sum of the buoyancy of each float is greater than the gravity of the bottom gillnet.

Description

technical field [0001] The invention relates to a bottom gill net, in particular to a bottom-sinking bottom gill net device. Background technique [0002] Bottom gillnet is a kind of gillnet, which uses a rectangular mesh woven with one or more layers of plastic wire. There are multiple floats on the upper edge of the bottom gillnet, and multiple counterweights on the bottom edge of the bottom gillnet, so that the bottom gillnet is laid vertically on the seabed, waiting for fish to swim in and be entangled by the mesh . [0003] The mesh size of the rectangular mesh of the current bottom gill net is generally limited, so as to avoid the mesh size being too small and causing all fish, whether large or small, to be caught in the net, which will cause ecological damage; but in the actual use of the bottom gill net , due to the buoyancy pulling effect of the float, the mesh will be deformed and elongated, so that the actual passing size of the mesh will become smaller, which i...

AI Technical Summary

Problems solved by technology

[0006] Another purpose of the present invention on the basis of the first purpose is to provide a sunken bottom gillnet device in order to overcome the deficiencies in the prior art, which can effectively solve the problem that the bottom gillnet sinks into the seabed and is very difficult to salvage, and causes seabed Ghost fishing, a problem that seriously damages the seabed ecological environment

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