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Aerofoil-shaped trawl net plate

A net plate and airfoil technology, which is applied in the field of trawl net plates, can solve problems such as the instability of the net plate, achieve the effects of increasing stability, increasing the force-bearing area, and ensuring stability

Active Publication Date: 2019-11-22
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vortex makes conventional stencils unstable and wobbles

Method used

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  • Aerofoil-shaped trawl net plate
  • Aerofoil-shaped trawl net plate
  • Aerofoil-shaped trawl net plate

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Please refer to figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 ,in, figure 1 A schematic structural view of a preferred embodiment of the airfoil shape trawl net plate provided by the present invention; figure 2 for figure 1 The schematic diagram of the cross-sectional structure of the side part shown; image 3 for figure 1 The schematic diagram of the cross-sectional structure shown in the top view; Figure 4 for figure 1 Schematic diagram of the structure of the limit mechanism shown; Figure 5 for figure 1 Schematic diagram of the structure of the partial level regulation shown. The airfoil-shaped trawl mesh panel includes: an airfoil mesh panel, an active deceleration mechanism 4 , a limit mechanism 5 , a transmission mechanism 6 , a depth adjustment mechanism 7 , and a level adjustment mechanism 8 .

[0025] In the s...

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Abstract

The invention provides an aerofoil-shaped trawl net plate. The aerofoil-shaped trawl net plate comprises an aerofoil-shaped net plate body, an active speed reducing mechanism, a limiting mechanism, atransmission mechanism, a horizontal adjusting mechanism and a depth adjusting mechanism, wherein the aerofoil-shaped net plate body comprises two curved side plates, a top plate and a bottom plate, the two curved side plates are symmetrically arranged, the top plate and the bottom plate are welded to the upper end and the lower end of the two curved side plates respectively, and the active speedreducing mechanism is fixedly connected to the interior of the aerofoil-shaped net plate body; the active speed reducing mechanism comprises an arc-shaped water baffle, a sliding rod, a box body, a fixing plate, a spring, a groove and a resistance plate; the sliding rod is transversely and slidably connected to the interior of the aerofoil-shaped net plate body, and one end of the sliding rod penetrates through the aerofoil-shaped net plate body and is fixedly connected with the arc-shaped water baffle; the box body is fixedly connected between the two curved side plates. The aerofoil-shaped trawl net plate has the advantages that the stability is high, the fishing capacity of a fishing boat is increased, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of trawl net panels, in particular to an airfoil-shaped trawl net panel. Background technique [0002] Due to the ever-increasing costs of operating commercial trawlers, it is important to increase the efficiency of fishing equipment to minimize drag and fuel consumption requirements. A common problem with using traditional trawl panels to spread the mouth of the trawl is inefficiency. Today, conventional nets fish at roughly 20-40 degrees angle of attack. There is a need to provide more efficient trawl panels, in particular trawl panels with better spread of the trawl and reduced drag during actual trawling operations. [0003] Furthermore, with conventional trawl panels, a vortex is formed behind the trawl panels, which pushes the panels towards each other. During operation, the screens must be constantly pushed outwards to increase the space between the screens, which requires additional energy and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K73/045
CPCA01K73/045
Inventor 臧迎亮唐伟尧刘莉莉
Owner ZHEJIANG OCEAN UNIV
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