Arm frame type trawler

Abstract

The invention provides an arm frame type trawler and belongs to the technical field of ships. The arm frame type trawler comprises a hull structure and two trawling arm frames. The lower ends of the two trawling arm frames are hinged to the two sides of the hull structure. Floating mechanisms are arranged at the tops of the trawling arm frames. Each floating mechanism comprises a floating box. A hydraulic lifting platform is arranged on the lower side face of each floating box. A lifting board is arranged at the lower end of each hydraulic lifting platform. First through holes are formed in the periphery of each lifting board. Sliding rods are inserted in the first through holes. Baffles are arranged at the upper ends of the sliding rods. The size of each baffle is larger than that of eachfirst through hole. The lower ends of the sliding rods penetrate through the first through holes and are hinged to floating bodies. The sliding rods are provided with reset springs. The reset springsare located between the baffles and the lifting boards. An air bag is arranged between each floating body and the corresponding lifting board. An electric air pump is arranged on the upper side faceof each floating box. An exhaust pipe of each electric air pump communicates with the corresponding air bag. The floating mechanisms in the arm frame type trawler achieve a good supporting effect in the trawler trawling operation process, and the ship navigation stability is improved.

Description

Technical field [0001] The invention belongs to the technical field of ships, and relates to a fishing boat, in particular a boom type trawler. Background technique [0002] In reality, due to the small tonnage of fishing vessels, they are greatly affected by wind and waves during ocean fishing, especially boom-type trawlers, because the boom set on the hull structure is generally longer. In non-operating conditions, the trawl arm The frame is fixed vertically on both sides of the mast, so the trawl boom is much higher than the living area on the fishing boat, which makes the overall center of gravity of the fishing boat higher, resulting in poor stability of the fishing boat in wind and waves. Secondly, in the operating state, the trawl boom When the frame is horizontal, the free end of the boom protrudes more out of the hull structure, and the drag force of the fishing net is larger, which makes the fishing boat easy to tip over and has poor stability. So how to improve the sta...

AI Technical Summary

Problems solved by technology

[0002] In reality, due to the small tonnage of fishing boats, they are greatly affected by wind and waves during ocean fishing, especially boom-type trawlers, because the booms set on the hull structure are generally long. The frame is vertically fixed on both sides of the mast, so the trawl boom is much higher than the living area on the fishing boat, which makes the overall center of gravity of the fishing boat higher, resulting in poor stability of the fishing boat in wind and waves. Secondly, in the working state, the trawl boom The jib frame is horizontal, the free end of the jib frame protrudes more from the hull structure, and the drag force of the fishing net is relatively large, which makes the fishing boat easy to fall outward and has poor stability. Therefore, how to improve the stability of the jib type trawler, Reducing its sway in wind and waves is an urgent problem to be solved

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