Marine bottom trawling trapper and trapping method thereof

A trap and marine technology, applied in the field of traps, can solve the problems of benthos port detachment, port detachment, being easily affected by ocean currents and currents, etc., and achieve the effect of effective collection

Active Publication Date: 2014-10-08
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to overcome the problem that the Alfred trawl device in the prior art is easily dragged up by ropes during the process of collecting marine benthic organisms, which makes it difficult for the Alfred trawl device to effectively collect the seabed surface or bottom mud. To solve the problem of benthic organisms in the surface layer, provide a marine bottom drag trap and its capture method that can effectively collect benthic organisms inhabiting the seabed surface and the bottom mud surface
[0006] The second purpose of the present invention on the basis of the first purpose is to overcome the influence of sea current and water flow on the Ashi trawl device in the prior art in the process of pulling up, causing the benthic organisms in the Ashi trawl to be separated from the Ashi trawl. To solve the problem that the port of the trawl device is detached, provide a marine bottom trawl catcher and a capture method thereof that can effectively prevent the problem that benthic organisms are detached from the port of the trawl device when the trawl device is pulled up after the collection is completed
[0007] The third purpose of the present invention on the basis of the first and second purposes is to overcome the problem that the meshes of the trawl net are easily blocked in the process of collecting marine benthic organisms in the prior art, causing the Ashi trawl device The problem that it is difficult to effectively collect benthic organisms provides a marine bottom drag catcher and its device that can effectively ensure that at least a part of the meshes in the trawl device remain unblocked during the process of collecting benthic organisms, thereby effectively collecting benthic organisms. capture method

Method used

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  • Marine bottom trawling trapper and trapping method thereof
  • Marine bottom trawling trapper and trapping method thereof
  • Marine bottom trawling trapper and trapping method thereof

Examples

Experimental program
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Embodiment 1

[0040] Embodiment 1: as figure 1 As shown, a kind of marine bottom dragging catcher comprises a trawl net box 1, a counterweight 3, four fixed anchors 32 installed on the counterweight by chains respectively, a first winch 5 and a second winch 6 arranged on the hull . The first winch includes a first reel rotatably arranged on the hull, a first rotating device for driving the first reel to rotate, a tow rope 2 wound on the first reel and a first clutch. The first rotating device includes a motor and a reducer, and a brake is arranged between the motor and the input shaft of the reducer. The output shaft of the speed reducer of the first rotating device is connected with the rotating shaft of the first reel through the first clutch. The second winch includes a second reel rotatably arranged on the hull, a second rotating device for driving the second reel to rotate, a lowering rope 4 wound on the second reel and a second clutch. The second rotating device includes a motor a...

Embodiment 2

[0047] Embodiment 2: the capture method of a kind of ocean bottom drag catcher described in a kind of embodiment 1, this capture method comprises the following steps successively:

[0048] A: Transport the marine bottom drag trap to the designated benthic collection sea area by ship;

[0049] B: The first clutch is disengaged, and the trawl box 1 is lowered to the seabed through the tow rope 2 under its own weight.

[0050] Such as figure 1 , Figure 4 As shown, due to the effect of the balance bar 10, after the trawl box sinks to the seabed, it will be as follows figure 1 , Figure 4 The state shown is placed on the bottom of the sea; at this moment, one second side in the two second sides of the trawl box will become the side that is in direct contact with the bottom of the sea, and in this process, the pressing plate 83 and the pressing bar of the automatic opening and closing cover plate mechanism 82 will push a corresponding cover plate 7 upward along the first guid...

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Abstract

The invention discloses a marine bottom trawling trapper and a trapping method thereof, and aims to provide the marine bottom trawling trapper which can effectively trap benthos perching on the surface of a seabed, and the trapping method thereof. The marine bottom trawling trapper comprises a trawl cage, a counterweight, at least one fixing anchor installed on the counterweight through a chain, a first reel rotatably arranged on a ship, a first rotating device for driving the first reel to rotate, a trawling rope reeled on the first reel, a second reel rotatably arranged on the ship, a second rotating device for driving the second reel to rotate, and a downwardly throwing rope reeled on the second reel, wherein the output shaft of the first rotating device is connected with the rotating shaft of the first reel through a first clutch; the output shaft of the second rotating device is connected with the rotating shaft of the second reel through a second clutch; the free end of the trawling rope is fixed on the trawl cage; the free end of the downwardly throwing rope is fixed on the counterweight; a guide ring is arranged on the counterweight; the trawling rope penetrates through the guide ring.

Description

technical field [0001] The invention relates to a trap for collecting marine benthic organisms, which is used for qualitative and quantitative analysis of marine benthic organisms, in particular to a marine bottom drag trap used in marine ecological environment investigation and a capturing method thereof. Background technique [0002] The investigation of marine benthic organisms is an important part of the comprehensive investigation of the basic marine sciences. Especially at present, due to the influence of human activities, the amount of near-shore seabed sediments is increasing, which seriously affects the composition and composition of benthic communities living on the seabed substrate. Biomass; therefore, the investigation and research of marine benthic organisms have gradually received more attention. [0003] At present, the device usually used when collecting marine benthic organisms is the "Ashtray trawl device". In the actual process of collecting benthic trawls...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K73/02
Inventor 薛彬郭远明李铁军李子孟
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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