Chinese mitten crab bottom trawler

A technology of Chinese mitten crab and bottom trawling, which is applied to fishing boats, fishing, fishing nets, etc., can solve the problem of multi-personnel input, and achieve the effects of improving fishing efficiency, saving human resource costs, and reducing human work intensity

Active Publication Date: 2018-01-02
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the current trawl structure is concerned, such as figure 2 As shown, the height between the bifurcated cable 26 and the supporting steel pipe A 24 is about 3m, the length of the connecting rope 27 between the supporting steel pipe A 24 and the supporting steel pipe B 25 is about 6m, and the height below the supporting steel pipe B 25 is about 2m , that is to say, the distance towed by two laborers is more than 10m, which still requires more personnel input

Method used

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  • Chinese mitten crab bottom trawler
  • Chinese mitten crab bottom trawler

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] A Chinese mitten crab bottom trawler includes a fishing hull and such as figure 2 Bottom trawl shown.

[0015] like figure 1 The fishing hull deck shown is provided with a hanger and a hoisting mechanism.

[0016] (1) The hanger is composed of two steel pipes 1 of equal length. The length of the steel pipes 1 is 5m and the inner diameter is 5cm. They are fixed on the fixing plate 10 in the middle of the fore deck of the fishing hull. The top angle of the two steel pipes 1 is 45 degrees.

[0017] (2) Two pulleys 2 are fixed below the top connection point of the two steel pipes 1 .

[0018] (3) The hoisting mechanism includes a hook 5 and a hook 6, a wire rope 3 and a wire rope 4, and a two-way hoist 7. The wire rope 3 and the wire rope 4 are 10m long and are respectively wound around the pulley 2. One end of the two wire ropes is equipped with hooks 5 and 6 respectively, and the other end is fixed on the spool of the two-way winch 7. The two wire ropes are wound in o...

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PUM

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Abstract

The invention discloses a bottom trawling fishing boat for Chinese mitten crab, which comprises a bottom trawling net and a fishing hull; Supporting the net bag connected by steel pipes; it is characterized in that: there are multiple hanging buckles between the bifurcated cables of the bottom trawl net and the net bag; the fishing hull is provided with a hanger, and the hanger is provided with two alternating Linkage lifting hook. Under the condition of limited space, the present invention alternately lifts the trawl net bag through the double pulley device, which significantly reduces the manpower work intensity of the traditional trawl fishing boat for Chinese mitten crab during operation, and reduces the number of crew required by the fishing boat. The fishing efficiency is improved and the cost of human resources is saved.

Description

technical field [0001] The invention belongs to the technical field of fishery, and in particular relates to an improved bottom trawling vessel for mitten crab, which can lift and lower the bottom of mitten crab by using a steel hanger fixed in the middle of the front deck of the fishing vessel The trawling net bag mechanizes the net collection process of the traditional Chinese mitten crab trawler. Background technique [0002] Eriocheir sinensis is one of the few migratory species that can form a stable fishing season in the Yangtze River Basin. After entering the flood season from late September to early October every year, Eriocheir sinensis gradually migrates to the mouth of the Yangtze River for reproduction. The existing fishing methods are mainly bottom trawling operations, which are composed of main cables, bifurcated cables, supporting steel pipes and net bags. The migratory population of Chinese mitten crabs mainly migrate through deep channels in the river chann...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B35/18A01K73/02
Inventor 刘凯徐东坡段金荣杨彦平
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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