Detachable fiberglass tubular trawl truss

Abstract

The invention discloses a detachable dragnet beam in the shape of fiber reinforced plastic tubes, and relates to a beam-shaped component which is positioned on the upper portion of a port of a dragnet and is used for supporting the port in the transverse width direction. The detachable dragnet beam in the shape of the fiber reinforced plastic tubes is simple in structure and high in strength, is light and can be carried and transported conveniently. The detachable dragnet beam in the shape of the fiber reinforced plastic tubes comprises a beam and a cross rope positioning device; the beam comprises a plurality of fiber reinforced plastic tubes and a plurality of fiber reinforced plastic connecting sleeves, and each two adjacent fiber reinforced plastic tubes are connected with each other by the corresponding fiber reinforced plastic connecting sleeve; and the cross rope positioning device comprises a plurality of cross rope positioning mooring rings, and the cross rope positioning mooring rings are symmetrically mounted on the left portion and the right portion of the beam and are used for being connected with cross ropes.

Description

technical field [0001] The invention belongs to the field of marine biological investigation, and in particular relates to a rod-shaped part at the upper part of a net mouth of a single-ship bottom-floor truss-type trawl net used for marine bottom biological investigation and sampling, and used to support the transverse width of the net mouth. Background technique [0002] The single-vessel bottom truss trawl relies on the truss tied to the net mouth to expand the net mouth, but the traditional truss has the following problems: [0003] 1. Traditional trusses are mostly made of wood or bamboo, but it is difficult for log poles and moso bamboo poles to meet the requirements of strength and scale. Most of the trusses in production are between 20.00-30.00m in length, and the smallest one is more than 8.00m. It is difficult to achieve such a length for a wooden or bamboo pole, and it is difficult to meet the requirements in terms of strength. Therefore, in production, several w...

AI Technical Summary

Problems solved by technology

[0003] 1. Traditional trusses are mostly made of wood or bamboo, but it is difficult for log poles and moso bamboo poles to meet the requirements of strength and scale

Most of the trusses in production are between 20.00-30.00m in length, and the smallest one is more than 8.00m. It is difficult to achieve such a length with a wooden or bamboo pole, and it is difficult to meet the requirements in terms of strength.

Therefore, in the production, several wooden or bamboo poles are often stretched and bundled in a staggered manner, which makes the entire truss very thick and heavy, and is inconvenient to carry and transport.

[0004] 2. Due to the rapid development of my country's steel production capacity, hot-dip galvanized steel pipes have been used to make trusses in recent years. Although the situation of thick and heavy trusses made of bamboo and wood has changed, due to the strong corrosion of seawater, it has greatly Reduced service life of steel pipes

However, the problem that the truss is too long and inconvenient to carry and transport remains unsolved

In particular, the fluidity, rapidity and maneuverability of marine bottom biological survey work are very high, and the girders that are not easy to carry and transport do not meet the needs of survey work

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