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Trawl net for double-surface spring-tooth shellfish

A trawling and shellfish technology, applied in the field of aquaculture, can solve the problems of wasting time and energy, and the structure is not completely symmetrical, and achieve the effect of improving the safety factor of the net, reducing the risk of personal safety, and saving energy consumption.

Active Publication Date: 2013-02-06
ZHANGZIDAO GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the advancement of aquaculture technology, the water depth of shellfish bottom-seeding culture has been continuously expanded. However, when the net gear used for stock investigation and fishing in the shellfish culture process is operated in a water depth area greater than 50 meters, the structure of each part of the net gear is not good. Completely symmetrical, under the action of water flow and ship drag, the overturning rate is as high as 30%, wasting time and energy

Method used

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  • Trawl net for double-surface spring-tooth shellfish
  • Trawl net for double-surface spring-tooth shellfish

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 with figure 2 As shown, the benthic mollusc trawl net with double-sided elastic teeth is a fully symmetrical structure, including the front triangle fixing frame 1, the front shell picking device 2, the rear shell picking device 3, the dragging link 4, the net bow 5, and the rear triangle fixing frame 6. Sea-sweeping iron chain 7, bag net 8, auxiliary dragging link 9, first shell picker fixing rod 10, second shell picker fixing bar 11, bag net sealing ring 12, first net bow support 13, The second bow support 14, the third bow support 15, the net port support 16 and the support frame 17.

[0020] Wherein, the dragging link connecting ring 4 is welded on the net bow 5, the net bow 5 is welded on the net port bracket 16, and the first net bow bracket 13, the second net bow bracket 14 and the third net bow bracket 15 are welded on the n...

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Abstract

The invention relates to the technical field of aquaculture, in particular to a trawl net for double-surface spring-tooth benthonic shellfish which is a full symmetric structure. The structure is new, and the structure can normally work while any one surface touches the seabed, so the problem that the normal shellfish net cannot catch caused by that the abdominal net faces upside and the back net faces downside while operates in the large deep-water area, especially rational and stable catching efficiency of the trawl net on underwater posture is showed while the trawl net is used in the large deep-water areas and the heavy storm areas. The invention not only saves the work time and the energy consumption, but also reduces the personal safety risk during the work period, improves the safety coefficient of releasing net, and saves the energy consumption. The invention has important significance for upgrading the benthonic shellfish breeding equipment and has wide popularization and use values.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a benthic shellfish trawl net with double-sided elastic teeth. Background technique [0002] At present, in the coastal areas of our country, the cultivation of shellfish is developing rapidly, and the breeding method of bottom-seeding flow is a fast-growing and effective cultivation method that has emerged in recent years. It has small investment, easy management, and has the advantages of large-scale cultivation and development. The development potential is huge. With the advancement of aquaculture technology, the water depth of bottom-sowing shellfish culture has been continuously expanded. However, when the net gear used for stock investigation and fishing in the shellfish culture process is operated in a water depth area greater than 50 meters, due to the different structures of the various parts of the net gear Completely symmetrical, under the effect of water flow and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K80/00
Inventor 臧有才张永国杨鑫
Owner ZHANGZIDAO GRP
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