基于双螺旋推进器的行走装置设计与试验

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Abstract：Inorder tosolve the problems oftidalflat aquacultureand coastal invasive species controlequipment，which are easyto slipandsink，amechanicalwalkingdeviceonwetandsoft ground asdesigned，andthemain mechanical structure includesa widecrawler walking device，a double screw thruster anda hull.Firstly，the structural designof the key component as the double-screw propeler wascarred out，taking the driving speed as the test index，the drumdiameter， the spiralrisingangle，theblade height，andthebladepitchas thetestfactors，the influenceofeach factoronthetest index wasanalyzed，andtheoptimal combinationof structural parametersof thescrew propellerwasfinally determinedas follows：the diameter of the drum is 400mm ，the height of the spiral blades is 50mm ，the lifting angle of the spiral blades is 30∘ ，and the pitch of the blades is 453mm . Then，theoretical force analysis and soil consolidation phenomenon analysis wereconductedonthe screw propellerand theinteractionmedium（soil，waterflow，etal.），andthe feasibilityof the double helix device was further determined through EDEM simulation.Finite element simulation analysis was carredout onthetransmision shaft partunderthe maximum torquetodetermine itsstrengthreliabilityFinally，theaccuracyof the above theories and simulation results was verified through field experiments.The results show that when the rotation speed of the screw propeller is 320r/min ，no soil pressure phenomenon occurs，and the actual maximum driving speed is 2.36m/s ，which meets the needs of the operation and is of great significance for offshore operations.

Keywords： twin-screw propulsion；traveling device；muddy beach ground;amphibious walking

0 引言

1979年，为了抵御台风、保护岸滩，互花米草被引入我国后，在我国沿海滩涂地带快速蔓延，给本土动植物的生长环境以及沿海养殖业带来了严重威胁。（剩余10736字）