Fishing device and method for fish stock at medium and deep sea bottom

A bottom, fish technology, applied in fishing, fishing nets, applications, etc., can solve the problem that the size of the trawl net is not easy to control, and achieve the effect of ensuring fishing efficiency and reducing production costs

Active Publication Date: 2019-04-19
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a control...

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  • Fishing device and method for fish stock at medium and deep sea bottom
  • Fishing device and method for fish stock at medium and deep sea bottom

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Such as figure 1 , figure 2 The illustrated embodiment is a fishing device for bottom fish resources in the middle and deep sea, comprising an elastic ring 1, a trawl net arranged on the elastic ring, five floats 2 arranged on the upper part of the elastic ring, and seven floats arranged on the lower part of the elastic ring. Heavy hammer 3, two support rods 4 arranged on the elastic ring, flexible shaft 5 arranged on the two support rods; one end of the flexible shaft is rotatably connected with one support rod, and the other end of the flexible shaft is connected with another support rod The rotating shaft of the motor 6 on the bar is connected, and the flexible shaft is provided with 5 trumpet-shaped water inlets 7, and each trumpet-shaped water inlet is connected with the L-shaped drain pipe 9, and each L-shaped drain pipe is verti...

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Abstract

The invention discloses a fishing device and method for fish stock at the medium and deep sea bottom. The fishing device comprises an elastic ring, a dragnet arranged on the elastic ring, a pluralityof floats arranged on the upper side of the elastic ring, a plurality of counter weights on the lower side of the elastic ring, two supporting rods arranged on the elastic ring, and a flexible shaft arranged on the two supporting rods. One end of the flexible shaft is connected with one supporting rod rotationally, the other end of the flexible shaft is connected with a rotation shaft of a motor arranged on the other supporting rod, a plurality of bell-mouth water inlets are arranged on the flexible shaft, each bell-mouth water inlet is connected with an L-shaped drain pipe, the L-shaped drainpipes are all connected with the flexible shaft perpendicularly, and the central line of each bell-mouth water inlet is perpendicular to the lower portion of the corresponding L-shaped drain pipe. The fishing device and method has the advantages of guaranteeing fishing efficiency and reducing production cost by automatically regulating size of the opening of the dragnet according to density of fish and shipping speed.

Description

technical field [0001] The invention relates to the technical field of middle-deep sea bottom fish fishing, in particular to a fishing device and method for middle-deep sea bottom fish resources with controllable net size. Background technique [0002] Trawling is the use of the movement of the ship to drag the fishing gear forward on the seabed or in the sea, forcing the fishing gear to pass through the fish, shrimps, crabs and other fishing objects in the waters into the net bag to achieve the purpose of fishing. [0003] Trawling nets can be used not only for fish, but also for cephalopods, shellfish and crustaceans; not only for fishing objects whose habitat water depth is only a few meters or tens of meters, but also for fishing objects whose habitat water depth reaches several thousand meters of deep-sea species. [0004] However, the existing trawl net has the problem that the size of the net opening is not easy to control. Contents of the invention [0005] The o...

Claims

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Application Information

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IPC IPC(8): A01K73/02A01K75/00
CPCA01K73/02A01K75/00
Inventor 朱文斌徐国强张禹张勋
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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