Fishing method using mesopelagic trawl easily crossing obstacle

An obstacle and trawling technology, which is applied in the field of fishing, can solve the problems of lower line wear, net tearing, and complex seabed environment, etc.

Active Publication Date: 2019-01-25
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing trawling technical conditions cannot meet the development needs of oceanic fisheries. Due to the deep water depth in the middle and deep seas and the complicated seabed environment, problems such as tearing of the nets and serious wear of the underlines often occur during the operation, which seriously affect the fishing in the middle and deep seas. Operation

Method used

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  • Fishing method using mesopelagic trawl easily crossing obstacle
  • Fishing method using mesopelagic trawl easily crossing obstacle
  • Fishing method using mesopelagic trawl easily crossing obstacle

Examples

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Effect test

Embodiment 1

[0020] Embodiment 1: a kind of method that utilizes the deep-sea trawling that is convenient to cross obstacle (referring to appendix figure 1 , attached figure 2 ), including a trawl net, the trawl net includes a netting 1, an upper class 2, a lower class 3, and a drag class 4, the upper class is connected with a float 5, and the lower class is connected with a telescopic rod 6, and the telescopic rod is rotatably equipped with a number of spanning frames. The frame includes a mounting sleeve 7, three poles 8 evenly distributed on the mounting sleeve, a number of support columns 9 corresponding to the poles, a bearing 17 is installed between the mounting sleeve and the telescopic rod, and the telescopic rod includes several movable rods. Rod bodies plugged together. The support rod is connected to the support plate 10, one end of the support column is connected to the abutment plate 11, and the other end is connected to several connecting rods 12 arranged divergently outwar...

Embodiment 2

[0022] Embodiment 2: a kind of method that utilizes the deep-sea trawling that is convenient to cross obstacle (see attached image 3 , attached Figure 4), its spanning frame structure and fishing method are similar to those of Embodiment 1, the main difference is that in this embodiment, a high-pressure gas storage tank 18 and a piston cylinder 19 are installed on the pole, and a piston 20 is installed in the piston cylinder, and the abutment plate and A push rod 21 is connected between the pistons, and the piston divides the interior of the piston barrel into a vent chamber 22 and a sliding chamber 23. The push rod seals through the cylinder wall of the piston barrel and the vent chamber, and the air bag 24 is connected on the support plate, between the air bag and the vent chamber. Connected to the inflation tube 25, the outer wall of the piston barrel is provided with an extension tube 26, a sealing plug 27 is installed in the extension tube, and a push spring 28 is insta...

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Abstract

The invention discloses a fishing method using a mesopelagic trawl easily crossing an obstacle, and aims to solve the problems that in the mesopelagic trawling process, netting is easily torn, and a foot line is seriously abraded, so that mesopelagic fishing operation is seriously affected. During trawling, a towing warp is connected to a fishing boat, the whole trawl is casted into seawater, thetrawl goes down into the seawater, and the fishing boat drags the trawl to move forwards to catch fishes. When the trawl comes across an obstacle, rolling wheels connected to a crossing frame on the foot line of the trawl make contact with the obstacle first and roll over the obstacle, the crossing frame rotates to release impact energy, meanwhile, a withstanding plate moves towards an installation sleeve so as to drive a whole telescoping rod and the foot line to be bounced upwards, and the obstacle is crossed. After a certain time, the trawl is drawn in the fishing boat to obtain the fishes.

Description

technical field [0001] The present invention relates to a fishing method, more particularly, it relates to a method of fishing with a mid-deep sea trawling net which facilitates crossing obstacles. Background technique [0002] With the sharp decline of traditional continental shelf fishery resources, the development of deep-sea fishery resources has attracted the attention of many countries. Since 1985, my country's West African transoceanic pelagic fishery started, and the transoceanic pelagic fishery mainly develops shallow water fishery resources within 100m. After more than 30 years of development, the development of transoceanic traditional inshore fishery resources is facing a new bottleneck period, and relevant cooperative countries have successively strengthened their The protection of coastal and offshore resources and fishing regulations are becoming increasingly strict, so it is necessary to develop new fishing grounds and new resources in the deep sea. The exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K73/02
CPCA01K73/02
Inventor 徐国强朱文斌张洪亮陈峰李德伟
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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