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Vertical V-shaped grid screen plate

A technology of grids and stencils, applied in the field of vertical V-shaped grids and stencils, which can solve problems such as poor hydrodynamic performance

Inactive Publication Date: 2015-08-26
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the seabed, the bottom trawl generally uses a small aspect ratio mesh plate, and its hydrodynamic performance is poor.

Method used

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  • Vertical V-shaped grid screen plate
  • Vertical V-shaped grid screen plate
  • Vertical V-shaped grid screen plate

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Embodiment Construction

[0017] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.

[0018] Depend on Figure 1 to Figure 3 As shown, a vertical V-shaped grid net plate provided by the embodiment of the present invention is composed of an upper deflector 1, a V-shaped wing plate 2 with a large aspect ratio and a receding angle, a dragging reinforcement plate 3, The lower deflector 4 is composed of a plurality of V-shaped wing plates 2 with a large aspect ratio and a receding angle at equal intervals between the upper deflector 1 and the lower deflector 4, and the dragging reinforcement plate 3 and each The V-shaped wing plates 2 with a large aspect ratio and a receding angle are connected in sequence to form a...

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Abstract

The invention relates to a vertical V-shaped grid screen plate. The vertical V-shaped grid screen plate is composed of an upper guide plate, V-shaped wing plates which are large in aspect ratio and have receding angles, steel warp reinforcing plates and a lower guide plate. The V-shaped wing plates which are large in aspect ratio and have the receding angles are arranged between the upper guide plate and the lower guide plate, the upper ends and the lower ends of the wing plates are connected with the upper guide plate and the lower guide plate at angles of wedges of the front ends of the upper guide plate and the lower guide plate, the wing plates are arranged backwards in parallel at equal intervals, the steel warp reinforcing plates are arranged between the upper guide plate and the lower guide plate and connected with the wing plates to form a screen plate body of a small-aspect-ratio structure, and the whole screen plate body is in a grid mode. The vertical V-shaped grid screen plate has high obstacle crossing capacity and lodging resistance and has the advantages of being high in expansionary force and suitable for fishing boats of different gross tons and water work on different water layers.

Description

technical field [0001] The invention belongs to the technical field of marine fishery fishing tools, in particular to a vertical V-shaped grid net plate. Background technique [0002] The trawl net plate is an important attachment in single-vessel trawling fishing operations. Its main function is to realize the horizontal expansion of the net gear and increase the sweeping area. At present, the types of net plates used more in the world trawling fishery include rectangle, ellipse, V-shape, vertical (large aspect ratio), vertical curved V-shape, slat and so on. Among them, the advantages of V-shaped stencil are low cost, convenient operation, good stability, strong ability to overcome obstacles and anti-lodging performance. However, since its surface form is basically similar to that of a rectangular screen, a larger eddy area will be formed on the back during operation, so the expansion force of the V-shaped screen is poor, and the hydrodynamic efficiency is not high. Alth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K73/045
CPCA01K73/045
Inventor 姜昭阳梁振林邓跃
Owner SHANDONG UNIV
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