| 摘要: |
| 针对甘肃省河西灌区玉米机械化收获作业后，部分秸秆残留附着在地面上，使得残膜难以回收且回收后含杂多，可利用价值低的问题，设计一种膜面清洁打捆自卸式残膜回收机。机具主要由悬挂装置、机架、传动装置、膜面清洁装置、起膜装置、捡拾喂入装置、打捆装置、卸膜装置和地轮组成，可同时完成膜面清洁、地膜捡拾与自动打捆卸膜作业。膜面清洁装置设计是在现有灭茬机构基础上，重新设计了灭茬甩刀的数量及在刀轴上的排列方式，并增加了秸秆输送搅龙，利用负压将切碎的秸秆输送到已作业地表；根据河西灌区的地形，对起膜铲的形状和入土倾角进行设计，取最佳入土倾角为23°；根据起膜铲的结构和排布，设计了偏心伸缩扒齿的排列方式；参照秸秆圆捆打捆机的设计，确定成捆室中转辊的数量为12根。田间试验结果表明:机具作业速度为1.39 m/s时，残膜拾净率为92.46%，含杂率2.15%，机具运行平稳，无故障出现，实现了膜土分离、膜杂分离，且地膜回收率高。 |
| 关键词: 膜面清洁 打捆 地膜 残膜捡拾 起膜铲 |
| DOI：10.11841/j.issn.1007-4333.2020.11.13 |
| 投稿时间：2020-02-12 |
| 基金项目:2019年甘肃省农业生态环境保护专项(HT-GNST201901)；公益性行业(农业)科研专项(201503105) |
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| Design of a self unloading film recycling machine for film surface cleaning and bundling |
|
LI Dong1,ZHAO Wuyun1*,XIN Shanglong1,QU Hao1,LIU Xiaolong1,LIANG Jiadong2
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| (1.College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou 730070, China;2.Gansu Wuwei Xingdong Machinery Co. Ltd., Wuwei 733018, China) |
| Abstract: |
| Aiming at the problems that the film residues are difficult to recover and the recovery contains many impurities and the low utilization value of the recovered film caused by some straw residues attaching to the ground after the mechanized corn harvesting, an self unloading film recycling machine is designed in this study. The machine is mainly composed of a suspension device, a frame, a transmission device, a film surface cleaning device, a film lifting device, a picking and feeding device, a bundling device, a film unloading device and a ground wheel. It can simultaneously complete the film surface cleaning, film picking and automatic playing bundling and unloading operation. The design of the membrane surface cleaning device is based on the existing stubble stubble mechanism with the number of stubble throwing blades and the arrangement on the blade shaft redesigned and the straw conveying auger increased. Negative pressure is used to convey the chopped straw to the surface of the operation. According to the topography of the Hexi Irrigation Area, the shape and inclination angle of the film lifting shovel are designed, and the optimal soil inclination angle is set at α=23°; The number of twelve rollers in the baling chamber is determined according to the design of the straw round baler. The results of field tests show that when the operating speed of the tool is 1. 39 m/s, the residual film pick-up rate reaches 92. 46% and the impurity rate is 2. 15%, resulting in high recovery rate of film. |
| Key words: film surface cleaning baling film mulching residual film picking up film shovel |
