Studies on practicability of mechanical harvesting for cherry, blueberry and apple

1.蓝莓的机械采收研究了鲜果的机械采收。测量振动器的肢体加速度。在13g的促进剂作用下，成熟果实的脱落率为100%。9g时选择性收获指数为0.9。振荡时间为3s，频率为10 Hz。收获的果实没有梗。而且，它们已经开花，使用收集乙烯基薄膜没有损坏。2.苹果的机械采摘为了提供廉价的苹果，作者对机械采摘进行了研究。当与秸秆沿矩形方向拉动时，去除力为秸秆方向的1/5。所有果实都有柄，行程长度为3 cm，频率为3.3 Hz。现场试验，除草率可达90%以上。摇床收获的果实贮藏2.5个月后，未受损伤的果率为60%。在将苹果从2米或3米高的10厘米厚的氨基甲酸酯泡沫塑料上掉落的试验中，苹果没有受到损害。3.便携式摇床效率低下，因此我们设计并制作了拖拉机安装的摇床。4.我访问了法国和新西兰，了解水果的机械采摘情况。

1.Mechanical harvesting for blueberryThe authors studied mechanical harvesting for fresh fruits. Limb acceleration by the shaker was measured. Percent removal of mature fruit is 100% over 13g of acceleration. Selective harvesting index is 0.9 at 9g. Shaking time is 3s and frequency is 10Hz. Harvested fruits are without a stalk. And they have bloom and no damage for using a collecting vinyl sheet. Therefore it was found that the portable shaker is useful for harvesting blueberry for fresh fruit.2.Mechanical harvesting for applesThe authors studied mechanical harvesting for supplying cheap apples. Removal force is 1/5 of stalk direction as pulling at the rectangular direction with the stalk. All fruits had stalks at 3cm stroke length and 3.3Hz frequency. In the field test percent removal is over 90%. Fruits without damage are 60% after 2.5 months storage of shaker harvested fruits. In the test dropping the apples on a 10cm thick urethane foam from the height of 2 or 3m, apples have no damage.3.The portable shaker is inefficient, so we designed and made a tractor mounted shaker.4.I visited France and New Zealand to learn the situation of mechanical harvesting for fruits.