基于流变分析的玉米去雄抽取式夹持装置研究OA北大核心CSTPCD

To address the issues of difficult feeding,low rate of detasseling,and severe leaf loss in corn detasseling equipment,this study designed a suction-type clamping detasseling device and explained its main structure and operating principle.Through the analysis of the tassel clamping motion and force,the value range of key operational parameters affecting the detasseling operation was determined.The Burgers rheological digital model of corn tassels was constructed,and the rheological digital model parameters were fitted based on the curves of tassel force and deformation under different probe speeds.The connection among the radial vertical stiffness of the pneumatic clamping wheel,the spacing among the two wheels,the rotation speed of the pneumatic clamping wheel,and the clamping force of the suction-type clamping device was analyzed.An orthogonal experiment method with three factors at three levels was applied,using the radial vertical stiffness of the pneumatic clamping wheel,the spacing between the two wheels,and the rotation speed of the pneumatic clamping wheel as experimental factors,with detasseling rate and leaf loss rate as evaluation indicators.The results indicated that the optimal parameter combination was a radial vertical stiffness of 66.8 N/mm for the pneumatic clamping wheel,a spacing of 256 mm between the two wheels,and a rotation speed of 100 r/min for the pneumatic clamping wheel.Under this optimal parameter combination,experimental verification yielded a detasseling rate of 96.7%and a leaf loss rate of 63.3%,with an increase in yield of 5.6%compared to the non-detasseled area,meeting industry standards and agronomic requirements.This study provides theoretical reference for the development of suction-type corn detasseling machines.