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以往割前脱粒联收机的研究曾遇到下列障碍:飞溅损失大,只能收直立,高株、整齐、穗位差小的作物而适应性差,机器行速过低等。 本文采用了弓齿的带式脱粒器以便降低喂入口,有利于矮株的收获、与仿形拨禾轮相配合的喂入带可使植株柔和地倾斜,并以茎秆伸直、穗头朝前的状态喂入脱粒器、这样延长了脱粒过程,从而即使是难脱的粳稻也能脱净。并且机器行速得以提高70％或更多(达0.98～1.2米/秒)。在霜前收获时机器每米割幅的喂入量要高于传统型联收机(带水稻专用割台)和夹持半喂入式,田间测定表明带式脱粒器的功率消耗与传统型和夹持半喂入式相比是较低的。 采用贴地切割装置切割向前压倒且被脱粒过的稻草。其上方两侧有作往复运动的锯齿型搂耙,它将稻草搂集到中央成条铺、但对较高作业速度尚不很适应。 对喂入和脱粒装置的性能在理论上作了分析、其结论在田间试验中得到基本证实。 机器工作部件的耐久性还待考验。对倒伏严重作物还无法收获。
In the past, researches on the pre-harvest threshing and joining machine had encountered the following obstacles: large splashes and loss of accommodation, high yielding, tidy and spike-less crops, poor adaptability and low machine speed. In this paper, a toothed belt threshing device in order to reduce the feed port, is conducive to the dwarf plant harvest, and co-grafting reel with feed belt can be gently tilted plants, and stem straight, spike Feeding the thresher forward leads to the prolongation of the threshing process so that even hard-to-break japonica rice can be removed. And the machine speed can be increased by 70% or more (up to 0.98 ~ 1.2 m / s). The amount of feed per meter of breadth achieved at the time of harvest at the frost level was higher than that of a conventional sealer (with a dedicated header for rice) and a clamped half-feed, and field measurements showed that the power consumption of the belt thresher was lower than that of the conventional type It is lower compared to holding a half-feed. The stick-to-cut device was used to cut straw that was pushed forward and threshed. On both sides of the top are reciprocating sawtooth rakes, which gather the straw into the center into a strip shop, but not suitable for higher working speeds. The performance of the feeding and threshing device has been theoretically analyzed. The conclusion is basically confirmed in the field experiment. The durability of the working parts of the machine is yet to be tested. The lodging of serious crops can not be harvested.