滚筒式斜向捡拾残膜回收装置设计与试验OA

Aiming at the problem of missed collection of residual films in narrow rows due to the interaction between root stubble and soil in the drum-type residual film recovery machine,a diagonal residual film collection and recovery device was designed.By optimizing the arrangement of the film-picking teeth and the width and density,the number of pickups per unit area was increased,thereby improving the rate of residual film collection(without edge film).Through theoretical analysis,it was determined that the spacing of the pick-up teeth was 160 mm,the number of circumferential pick-up teeth was 8,and the pitch of the double helix arrangement on the drum was 320 mm.The working parameters of the device were determined through motion analysis.The forward speed of the machine was 5～9km/h,the rotation speed of the picking-up drum was 40～80 r/min,and the depth of soil penetration was 30～50 mm.A single-factor experiment was conducted by using the EDEM-Adams joint simulation,which narrowed the range of working parameters.Based on the results of the single-factor test,the forward speed of the machinery,the rotational speed of the picking-up drum,and the depth of soil penetration were taken as the test factors,and the residual film pickup rate was taken as the test index for the orthogonal combination simulation optimization test.The optimal parameter combination obtained was as follows:the forward speed of the machinery was 6.2 km/h,the rotational speed of the picking device was 65 r/min,and the depth of the picking teeth into the soil was 41 mm.At this point,the residual film pickup rate was 98.96%.Field trials were conducted to verify that the average residual film recovery rate of this device was 92.96%,improving the residual film recovery rate and significantly addressing the issue of leftover film being missed.