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An Antarctic krill trawl-wrapped lead-rope sinker class

A technology of Antarctic krill and sinkers, applied in fishing nets, fishing accessories, animal husbandry, etc., can solve problems such as mesh damage, reduced catch effect, and broken wires

Active Publication Date: 2018-10-02
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by friction and extrusion, the mesh at the mouth of the net is often damaged by the iron chain under the net, resulting in the breakage of the net line and reducing the fishing effect
At present, there is no one kind of Shenzi class that can effectively avoid friction or extrusion mesh

Method used

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  • An Antarctic krill trawl-wrapped lead-rope sinker class
  • An Antarctic krill trawl-wrapped lead-rope sinker class

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1: A kind of specific implementation of Antarctic krill trawl wrapping lead rope formula adopts lead wrapping rope 1, nylon weaving net 2, stainless steel ring 7, and wrapping lead rope is to be made up of lead particle and outsourcing nylon braided wire Rope-like objects, the unit weight of the lead-wrapped rope is distributed according to the sinking force requirements of the trawl net; an ultra-high-strength polyethylene rope is used as the lower line 5 for the trawl abdominal net 4, and "pipa heads" are made at both ends, and at the same time, every 30~ Install an "8" ring 6 at 50cm, and the upper ring of the "8" ring is fixed to the lower line; the length of the lead-wrapped rope is 0.9% to 1% longer than the lower line of the trawl net, and the two ends of the lead-wrapped rope are locked with shackles to prevent Slide the lead core, and then make "pipa heads" 3 at both ends. The lead-wrapped rope is covered with a layer of nylon braided mesh, and then c...

Embodiment 2

[0009] Embodiment 2: according to embodiment 1, with the mouth circumference 246m, the Antarctic krill trawl net with the mesh mouth size of 30cm is example, its lower class length is 64m, according to the hydrodynamic performance analysis of the net gear, the net gear pre-adds sinking force is 480kg, that is, the distribution of sinking force corresponding to the lead rope on the lower outline is 5kg / m×10m+7kg / m×10m+10kg / m×24m+7kg / m×10m+5kg / m×10m=480kg, which is a The lead-wrapped rope is wrapped with a layer of nylon braided net with a thickness of 2mm and a mesh size of 40mm; the inner diameter of the stainless steel ring is 100mm, the outer diameter is 110mm, and the inner diameter of the upper circle of the "8" ring matches the lower outline of the trawl net; the diameter is 22mm The high-strength polyethylene rope is used as the lower line, and an "8" ring is installed at an interval of 30 cm; the lead-coated rope used as the sinker line is covered with stainless steel ri...

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Abstract

The invention provides a lead-coated rope type ground rope for an Antarctic krill trawl. The lead-coated rope type ground rope comprises a lead-coated rope, a nylon woven mesh and stainless steel rings; the lead-coated rope type ground rope is characterized in that the two ends of the lead-coated rope are made into 'lute head' shapes, the lead-coated rope is wrapped with a layer of nylon woven mesh and then sleeved with the stainless steel rings with the inner diameter being higher than 1.5-3 times the outer diameter of the lead-coated rope, the total number of the stainless steel rings is the same as the total number of 8-shaped rings of a trawl foot line, each stainless steel ring is connected with a corresponding lower ring of a corresponding 8-shaped ring of the trawl foot line in a buckled mode, and the 'lute heads' at the two ends of the lead-coated rope are combined with the corresponding 'lute heads' at the two ends of the trawl foot line and then connected with an under cross rope.

Description

technical field [0001] The present invention relates to Antarctic krill trawl sinker class. Background technique [0002] At present, single-vessel mesh trawl sinkers, including Antarctic krill trawls, basically use iron chains, with different ratios of ups and downs to ensure the vertical expansion of the nets. However, as far as the Antarctic krill trawl is concerned, due to the high density of shrimp clusters and quality requirements, not only the hauling time is shorter, the frequency of lifting and releasing the net is high, but the speed of lifting and releasing the net is also faster. At present, the Antarctic krill single-vessel trawling method mainly includes two methods: the net body is hoisted to the stern slide and then winched by a crane, and the net body is directly twisted to the net machine. Affected by friction and extrusion, the mesh at the mouth of the net is often damaged by the chain-type underline, resulting in the breakage of the net line and reducing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K75/06
CPCA01K75/06
Inventor 冯春雷张禹张勋王永进王鲁民周爱忠郁岳峰王磊
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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