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Trawl net with a plurality of parallel bag sets and catching method thereby

A bag and trawling technology, applied in the field of fishing tools, can solve the problems of death, easily deformed drainage, poor catch, 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 multiple sets of bladders in parallel and fishing methods to improve catch survival and freshness

Method used

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  • Trawl net with a plurality of parallel bag sets and catching method thereby
  • Trawl net with a plurality of parallel bag sets and catching method thereby
  • Trawl net with a plurality of parallel bag sets and catching method thereby

Examples

Experimental program
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Embodiment 1

[0036] Embodiment 1: the trawl net with multiple groups of bladders in parallel in this embodiment 1 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 the net wing is connected with a fishing boat 11 connected to each other, the net bag is installed at the rear end of the net and connected with the net body, and the net bag includes

[0037] Frame 31 is installed on the back of the net, and is used for the connection of the pouch and the net body and the expansion of the pouch opening. The pouch opening and closing device, pouch removal device and controller are installed on the frame. Covered with a smooth soft rubber layer;

[0038]Four pouches 32 are used to hold fish catches. The pouches are stacked in parallel and installed on the frame. The pouch mouth is equipped with a front frame 321. Each pouch is provided with a hinge 322 connected to the fishing boat. The front...

Embodiment 2

[0044] Embodiment 2: the trawl net with parallel multi-group pockets of the present embodiment 2 comprises net wings, net body and net bag, is connected with the drag net that links to each other with fishing boat on net wing, and net bag is installed in net rear end and Connected with the mesh body, a telescopic cylinder is installed in the longitudinal rod of the front frame of the pouch, and the telescopic cylinder is connected with the controller. When the front frame of the pouch needs to be opened, the controller controls the extension of the telescopic cylinder, and the cylinder overcomes the pressure in the longitudinal rod. The retraction force of the elastic element drives the longitudinal bar to extend, and the upper and lower cross bars of the front 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 it needs to be reset, the controller will control it. The retraction of t...

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Abstract

The invention discloses a trawl net with a plurality of parallel bag sets and catching method thereby. The trawl net comprises a wing, a body and a net bag. The net bag comprises a frame and a plurality of bags stacked on the frame in parallel. The frame is provided with a bag entry opening-closing device, a bag removal device and a controller. The trawl net with the net bag composed of multiple net bags stacked in parallel has the advantages that catches obtained with the trawl net can be collected into the corresponding net bag in batches and timely removed from the body to be lifted to a fish boat along with the net bags, the problem that the catches are squeezed and scratched, or die and even deteriorate due to long-term trawling is solved, survival rate of the catches is increased, freshness of the catches is improved, and owing to fractional extraction and light weight of the net bags, chances of the fish boat being tangled are slimmed.

Description

technical field [0001] The invention relates to a fishing tool, in particular to a trawl net with multiple sets of parallel pouches and a fishing method for improving 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. kilometers of d...

Claims

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Application Information

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IPC IPC(8): A01K73/02
Inventor 宋伟华
Owner ZHEJIANG OCEAN UNIV
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