立轴锯片式棉秆粉碎还田机的设计与台架试验OA

To address the issues of high energy consumption,incomplete shredding,and susceptibility to moisture content in existing hammer-claw and swing-blade cotton stalk shredding equipment used for field incorporation in Xinjiang,a vertical saw blade-type cotton stalk shredder and mulcher was designed.The machine incorporated saw blade cutting,crop separation devices,and adjustable-spacing saw blade groups to accommodate Xinjiang's 66 cm+10 cm planting pattern.The geometric and mechanical properties of cotton stalks were measured,revealing that shear force first decrea-ses then increases with rising moisture content.The optimal shredding and return-to-field window occurs at 35%-45%moisture content.To optimize operational parameters,a test bench simulating field conditions was constructed.Saw blade speed,axial spacing between blades,and feed rate three factors were selected.A three-factor,three-level orthogonal test was conducted,using cutting power consumption and pulverization pass rate as evaluation index.Through regression and variance analysis,regression models linking factors to indicators were established.Results indicated that saw blade speed most significantly impacted power consumption,while feed rate most strongly influenced qualification rate.Multi-objective optimization results indicated that at saw blade speed 1,813 r/min,axial spacing 121 mm,and feed rate 1.25 m/s,cutting power consumption reached 65.8 J while pulverization pass rate achieved 88.3%,meeting national stand-ards.This study provides a theoretical basis for energy conservation,consumption reduction,and performance optimiza-tion of cotton stalk returning equipment,holding practical significance for promoting the resource utilization of cotton stalks and sustainable agricultural development in Xinjiang.