BEAM STRUCTURE FOR WATER LAYER VARIATION ADJUSTMENT OF ANTARCTIC KRILL TRAWL

摘要

A beam structure for water layer variation adjustment of an Antarctic krill trawl, comprising a beam (1), a forward drive hydrodynamic generation mechanism, a reverse drive hydrodynamic generation mechanism, a transmission mechanism, and rising and submerging adjustment wing mechanisms. The transmission mechanism comprises a transmission shaft (2), the transmission shaft (2) being non-synchronously driven by the forward drive hydrodynamic generation mechanism and the reverse drive hydrodynamic generation mechanism respectively to rotate in opposite directions. Each rising and submerging adjustment wing mechanism comprises mounting plates (3), first gears (4), and a wing plate (5) having a shuttle-shaped cross section. Two first gears (4) provided at a same height at an interval are respectively mounted on the opposite sides of the mounting plates (3). A second gear (6) is provided on the transmission shaft (2). The second gear (6) is located between the two first gears (4) and is synchronously meshed with the two first gears (4). The wing plate (5) is located between the mounting plates (3). Either end of the wing plate (5) is separately connected to the two first gears (4) and can be driven by the rotation of the two first gears (4) in opposite directions to rotate along the axis of the transmission shaft (2) to implement angle adjustment, thus achieving controllable active rising and submerging adjustment of a beam trawl.