ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

At present, the vegetable transplanting machinery in China is mainly semiautomatic transplanting machines. The transplanting efficiency depends on the speed of artificial seedling pickup, its productivity can no longer meet the market, and the efficiency of twoarm rotary automatic seedling pickup mechanism also has the potential to improve. In order to realize the highspeed seedling pickup operation, it was studied to increase the number of seedling pickup arms in the case of keeping the rotation speed of the seedling pickup mechanism unchanged. A threearm rotary vegetable plug seedling pickup mechanism under the condition of satisfying the specific seedling pickup action posture was designed. Mechanical seedling pickup was used instead of artificial seedling pickup to simulate a reasonable seedling pickup trajectory. Based on Visual Basic 6.0 auxiliary analysis software was developed and a set of institutional parameters that met the requirements of seedling pickup work were obtained through humancomputer interaction. Then a threedimensional model of the seedling pickup mechanism was established and the physical prototype assembly was completed. At rotation speed of 35r/min, the seedlingpicking speed of seedling pickup mechanism was 105 plants/(min·row), the running trajectory of the mechanism was very close to the simulation trajectory through camera analysis. The picking seedling test of the Coleus blumei seedlings was carried out and the test showed that the success rate of picking seedling reached 91.2%. It was proved that the design of threearm rotary vegetable plug seedling pickup mechanism was feasible.