Fishing device and its net plate assembly

Abstract

The invention discloses an otter board assembly. The otter board assembly comprises a triangular support and a main rib plate, wherein the triangular support is transversely arranged and capable of rotating along a fixed shaft of a bottom edge, and the main rib plate is longitudinally arranged and are linked with the triangular support. The triangular support is located in the middle of the main rib plate, and a leading edge wing, a main wing and a wing flap are sequentially arranged on the main rib plate in an imbricate mode from front to back. The sections of the leading edge wing, the main wing and the wing flap are in an arc shape, a flow guiding gap is formed between the leading edge wing and the main wing, and a flow guiding gap is formed between the main wing and the wing flap; the two sides of the main rib plate are symmetrically provided with side rib plates, and each side rib plate is provided with an upper side wing, trawl iron and a guide rail, wherein the trawl iron and the guide rails are matched with a fishing net. The front end of the leading edge wing is provided with a front coil side, and the rear end of the wing flap is provided with a rear coil side. The resistance of the otter board assembly is low, the stability of the otter board assembly is high, and the performance of a fishing device can be improved. The invention further discloses a fishing device with the otter board assembly.

Description

technical field [0001] The invention relates to the technical field of fishing equipment, in particular to a net plate assembly. The invention also relates to a fishing device using the net plate assembly. Background technique [0002] In single-bottom trawling production, net plates are usually used to maintain the expansion of the net mouth and achieve a certain sea sweeping width. The net plate is placed at the end of the net and then connected to the two wings of the net through attachments and ropes. During the dragging process, the net plate realizes the lateral expansion of the net through hydrodynamic force. The large expansion force, small resistance and superior stability of the screen are important indicators for the design of the screen, and hydrodynamic means are usually used to improve or improve the hydrodynamic performance of the screen. [0003] The traditional stencils currently used, such as rectangular flat stencils, V-shaped stencils, double-bladed el...

AI Technical Summary

Problems solved by technology

[0003] The traditional stencils currently used, such as rectangular flat stencils, V-shaped stencils, double-bladed elliptical stencils, and integrated stencils, tend to generate wing-end vortices at the rear end of the stencil when dragged, and the backside of the stencil is separated prematurely. , large resistance, small lift-to-drag ratio, poor stability, and poor deep-sea operation performance, which hinders the performance of trawling.

Images