Dragnet with a plurality of serial bags and fishing method using dragnet

A pouch and trawl technology, which is applied in the field of fishing tools, can solve problems such as death, easy deformation of water filtration, poor catches, etc., and achieve the effects of reducing power, improving survival rate and fresh quality

Active Publication Date: 2014-01-01
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention mainly solves the technical problems that the fish catches are easily deformed due to the accumulation of fish catches in the existing trawling operation, and the catches are squeezed, scratched, dead, or even deteriorated due to poor water drainage; it provides a method that can control the extraction of the mesh bags. Time, trawling with serial sets of bladders and fishing methods for increased catch survival and freshness

Method used

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  • Dragnet with a plurality of serial bags and fishing method using dragnet
  • Dragnet with a plurality of serial bags and fishing method using dragnet
  • Dragnet with a plurality of serial bags and fishing method using dragnet

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Effect test

Embodiment

[0040] Embodiment: the trawl net of the present embodiment with multiple groups of bladders in series is used for the trawling operation of fishing boats, such as figure 1 As shown, the trawl net includes a net wing 1, a net body 2 and a net bag 3, on which a drag net 11 connected with a fishing boat is connected, and the net bag is installed at the rear end of the net and connected with the net body, and the net bag includes:

[0041] Four pouches 32 are used to hold catches. The pouches are connected head to tail in series at the rear end of the net. Frame 322, front frame and rear frame form the fish catch import and export of pouch, all are installed with the winch 323 that links to each other with fishing boat on each pouch, the outside surface of front frame and rear frame all sticks with one deck smooth soft Quality rubber layer;

[0042] Three frames 31 are respectively installed between the corresponding pouches for the connection between the rear frame of the previo...

Embodiment 2

[0048] Embodiment 2: The trawl net with multiple groups of bladders in series in this embodiment 2 includes net wings, net body and net bag, and the drag net connected with the fishing boat is connected on the net wing, and the net bag is installed at the rear end of the net And connected with the net body, telescopic cylinders are installed in the longitudinal rods of the front frame and the rear frame of the pouch, and the telescopic cylinders are connected with the corresponding controller. When the front frame and the rear frame of the pouch need to be opened, the controller controls the telescopic cylinder When the top is stretched, the cylinder overcomes the tension of the spring in the longitudinal rod and drives the longitudinal rod to extend. The upper and lower cross bars of the front frame and the rear frame are separated to form an expanded pouch opening. The fish caught by the trawl net can enter the pouch through the frame and be collected. If reset is required, t...

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PUM

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Abstract

The invention discloses a dragnet with a plurality of serial bags and fishing method using the dragnet. The dragnet comprises a net wing, a net body and a net bag. The net bag comprises the plurality of bags which are serially connected end to end and frame. Each frame is provided with a front-rear frame open-close device, a bag separating device and a controller. By the arrangement, fish captured by the dragnet can be gathered in corresponding bags in batches, separated from the net body along with the bags, and dragged and lifted to a fishing boat, the problems of pressing, scratch, death even deterioration, caused by long-term trawling, of the captured fish are solved, survival rate and freshness quality of the captured fish are increased, and power of a fishing boat winch can be relieved due to lifting in batches and light bags.

Description

technical field [0001] The invention relates to a fishing tool, in particular to a trawl net with multiple sets of bladders in series and a fishing method thereof which can improve the survival rate and freshness of fish catches. Background technique [0002] Trawl net is a kind of mobile filtering fishing gear, relying on the power of the fishing boat to drag the bag-shaped fishing gear, forcing fish, shrimp, crab and other fishing objects into the net bag in the waters it passes through, so as to achieve the purpose of fishing production. [0003] Due to the flexibility, adaptability, and high production efficiency of trawling operations, it has a history and characteristics of rapid development. Modern trawling gear 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 meters. k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K73/02
Inventor 宋伟华
Owner ZHEJIANG OCEAN UNIV
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