Bottom trawl catching boat for eriocheir sinensis

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

Active Publication Date: 2016-01-06
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • 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 A24 is about 3m, the length of the connecting rope 27 between the supporting steel pipe A24 and the supporting steel pipe B25 is about 6m, and the height below the supporting steel pipe B25 is about 2m, that is, the currently used The distance towed by two laborers exceeds 10m, which still requires a lot of personnel input

Method used

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  • Bottom trawl catching boat for eriocheir sinensis
  • Bottom trawl catching boat for eriocheir sinensis

Examples

Experimental program
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Embodiment Construction

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

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

[0016] (1) The hanger is made up 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 fixed plate 10 in the middle of the front deck of the fishing hull.

[0017] (2) Two pulleys 2 are fixed below the connection point at the top 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. Wire rope 3 and wire rope 4 are 10m long, and they wind around pulley 2 respectively. One end of the two strands of steel rope is equipped with suspension hook 5 and suspension hook 6 respectively, and the other end is fixed on the spool of two-way winch 7. The winding directions of the two strands of steel rope ...

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Abstract

The invention discloses a bottom trawl catching boat for eriocheir sinensis. The bottom trawl catching boat comprises a bottom trawl and a catching boat body. The bottom trawl comprises a main mooring rope, a forked mooring rope connected to the tail end of the main mooring rope, supporting steel tubes connected with the forked mooring rope and a net bag connected with the supporting steel tubes. The bottom trawl catching boat is characterized in that a plurality of lifting clasps are arranged between the forked mooring rope and the net bag of the bottom trawl, a lifting frame is arranged on the catching boat body, and two lifting hooks ascending and descending alternately in linkage are arranged on the lifting frame. The trawl net bag is lifted through double pulley devices circularly and alternately in limited space, so that the labor intensity in the working process of a traditional trawl catching boat for eriocheir sinensis is obviously relieved, the number of seamen needed by the catching boat is reduced, the catching efficiency is improved, and the human resource cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of fishery, and in particular relates to an improved mitten crab bottom trawling fishing boat, which can use a steel hanger fixed in the middle of the front deck of the fishing boat to lift and lower the bottom of the Chinese mitten crab The trawl net bag mechanizes the net collection operation process of traditional trawling fishing boats for Chinese mitten crab. Background technique [0002] The Chinese mitten crab is one of the few migratory species in the Yangtze River Basin that can still form a stable fishing season. After entering the flood season from late September to early October every year, the Chinese mitten crab gradually migrates to the Yangtze Estuary for reproductive migration. Existing fishing method is mainly bottom trawling operation, and bottom trawling is made up of main cable, bifurcated cable, support steel pipe and mesh bag. Migratory groups of Chinese mitten crabs mainly migrate th...

Claims

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Application Information

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Patent Type & Authority Applications(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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