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把收获得到的甘蔗段通过输送臂实时输送到田间运输车上是切段式甘蔗收获机的重要功能之一。为了使输送装置配合田间运输车的车高,输送装置就必须有一定的长度,这导致中小型切段式甘蔗收割机的输送臂占据整机空间的比例过大,不利于收割机的跨区运输,导致收割机的利用率低。为了解决输送臂占据空间比例较大的问题,笔者设计了一款新型的链板式可折叠输送臂。通过Matlab的仿真求出该款新型输送臂的工作空间的解集。在田间进行了输送角度的单因素试验,试验结果显示,输送角度对输送臂的填充系数、输送量、功率和能量利用率都具有显著的影响。该输送臂最佳的输送角度应为40°。 相似文献
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印度甘蔗研究所研制了一种后悬挂式甘蔗收割机(见图1)。该机紧贴地面切割,并将割下的蔗秆铺放在地面上。该机重量轻,结构紧凑,容易操作。与35马力 相似文献
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澳大利亚澳大利亚1974年98.6%的甘蔗是利用机械收获,1975年提高到99.6%。昆士兰的甘蔗是全部机械化收获,新兰威尔士省则是94.9%。99.2%的收获机是切段式。全茎式则从1.0% 相似文献
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这是澳大利亚梅西·弗格森公司的新产品,用以种植由切段式收获机(MF105或 MF205)收获,切段的不经火烧蔗叶甘蔗。此机能开植蔗沟、施杀菌药剂、施肥、下种、覆土和压土。由一人操作,速度是8公 相似文献
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古巴是世界上主要产糖国之一,甘蔗种植面积占整个种植面积的30%,糖是古巴的重要出口物资。1952年前甘蔗收获都是手工操作,1952年以后,古巴和苏联共同建造了一家甘蔗收割机厂,成批生产KTP-1型甘蔗联合收割机。1976年,古巴已有40%以上的甘蔗园采用联合收割机收获(即一次收获法),其余的甘蔗园则采用半机械化收获(即分段收获法)。 相似文献
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国内甘蔗机械收割的应用与国外相比存在较大的差距。通过引进国外的甘蔗收割机,并在国内进行应用探索,分析不同甘蔗收割机的收割能力、除杂能力、对宿根的影响及成本,为甘蔗收割机在国内的应用提供参考,以加快国内甘蔗机械化收割的应用。 相似文献
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利用1979~2019年40个压榨期(11月至翌年3月)的无雨日数资料,从时空分布及其气候演变特征2个维度对广西糖料蔗压榨期机收作业气候适宜性进行分析评估。结果表明:11月至翌年1月广西蔗区平均机收作业适宜(无雨)天数53天,接近三分之二时间适宜机收作业,而2~3月只有三分之一的时间适宜机收作业;全压榨期机收作业适宜天数最多区域为百色市右江河谷蔗区,达三分之二以上,崇左市等西南部蔗区和北海市等南部蔗区次之,贵港、横县和来宾市的象州以南等广西中部的大部分蔗区再次之,上述蔗区机收作业适宜天数占压榨期总天数的一半以上,而柳州、河池等北部蔗区机收作业适宜天数低于一半。广西蔗区全压榨期机收作业适宜(无雨)天数呈上升趋势,增长速率为每10年2.8天,其中1月、2月为上升趋势,11月则呈减少趋势。从而提出了以12月至翌年1月作为广西糖料蔗集中机收时段,把右江河谷、桂西南和桂南蔗区作为机收作业大面积推广优先区域,研发轻便型机器等应对策略。 相似文献
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Jerzy Mańkowski Wojciech Maksymiuk Grzegorz Spychalski Jacek Kołodziej Andrzej Kubacki Damian Kupka 《Journal of Natural Fibers》2018,15(1):53-61
Modifications of combine harvester were introduced. Flax harvesting with the modified combine harvester following the dessication with Roundup did not affect the yield and weight of flax seeds when compared to the conventional pulling harvesting. A new method lead to a reduction in the yield of homomorphic fiber but losses depend on the cutting height and with the normal plant heigh (over 700 mm) and stubble height below 80 mm could be reduced to less than 10%. Flax harvesting by mowing can reduce the total labor costs by 30% and the labor costs of harvesting by more than 42%. Mowing of fiber flax fiber can significantly reduce and simplify the entire production technology. 相似文献
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甘蔗品种砍收后蔗糖分转化及蔗糖转化率的建立 总被引:8,自引:2,他引:6
甘蔗生产上忽视了与糖厂产糖率密切相关的性状即甘蔗品种砍收后蔗糖分转化程度,造成糖厂大面积种植砍收后蔗糖分极易转化的品种如川糖11号本文分析了由此产生的严重经济损失,并建立了甘蔗品种蔗糖转化率衡量吹收后蔗糖分转化程度,作为糖厂推广种植良种和选育的筛选性状之一。 相似文献
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为了考察碎叶轮、剥叶轮及断尾轮转速对甘蔗剥叶断尾效果的影响规律,设计并制造了作业转速可调的甘蔗割后集成作业试验台,并进行甘蔗剥叶断尾试验。采用二次回归通用旋转组合试验设计方法,以碎叶轮转速、剥叶轮转速和断尾轮转速为试验因素,以甘蔗未剥净率、断尾率、伤皮率和未折断率为试验指标,利用SAS9.3软件进行回归分析和响应面分析,研究单因子及交互效应对响应值的影响规律;结合非线性优化的计算方法,对试验台各工作部件的工作参数进行优化计算,确立影响甘蔗剥叶断尾质量的最佳参数组合为:碎叶轮转速为512.9 r/min、剥叶轮转速为418.8 r/min、断尾轮转速为307.0 r/min,此时未剥净率为4.98%、断尾率为88.39%、伤皮率为5.19%、未折断率为96.21%,试验验证表明未剥净率为4.86%、断尾率为90%、伤皮率为4.78%、未折断率为97.50%,试验验证与理论结果一致,因此所建立的回归模型合理,对设计与提高整杆式甘蔗收获机的收获质量有重要参考价值。 相似文献
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Paddy harvesting is the process of collecting the mature rice crop from the field which consists of activities such as cutting, handling, threshing and cleaning. Cutting, threshing and cleaning plays an important role to reduce postharvest losses. Lower performance of traditional harvesting process, labour shortage, reduced turn-around time and use of high yielding varieties have inevitably forced farmers to shift into mechanical grain harvesting in Sri Lanka. Rice milling is carried out to produce an edible polished or white rice product from harvested rough rice. Head rice yield is considered for marketing purposes because broken rice has low price in the market. Field survey was conducted in Polonnaruwa, Ampara and Hambanthota districts to identify most popular types of combine harvesters operating in the above districts. Paddy samples were collected from harvest of two most popular models of combine harvester in triplicate. Paddy sample of 1m2 area from every paddy field were harvested separately by manual harvesting followed by manual threshing and cleaning in laboratory as control sample of relevant paddy field. Moisture content of the paddy grains were measured in the paddy field using digital moisture meter before harvesting. Paddy samples were subjected to sun drying until the moisture content come down to 14±1% before the quality analysis in the laboratory. Each paddy sample was analyzed for moisture content, chaff percentage and head rice yield percentage (HRY). Paddy was milled using laboratory scale rubber roll sheller and abrasive polisher. Chaff content percentage was measured by adding 100 ml of paddy to water and volume of chaff was measured using graduated cylinder. HRY was calculated dividing the weight of grain partials, which are larger than the 3/4 of the grain, by weight of paddy sample. HRY between the two combine harvesting machine models evaluated were not significantly different at p<0.05 and also it was not significantly dependent on the harvesting methods such as combine harvesting and manual harvesting. The chaff content was significantly higher in model-2 in comparison to control sample for long grain paddy while model-1 was not significantly different with control sample for short grain paddy. 相似文献
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降低甘蔗生产成本,提高我国甘蔗产业竞争力 总被引:1,自引:0,他引:1
本文通过与先进甘蔗生产国对比,详细分析了造成我国甘蔗生产成本居高不下的原因,并提出了相应的解决办法。包括:整合土地资源,培育、壮大专业户、专业村、专业镇,规模化种植;选育推广高产、高糖、多抗、宿根性强的新品种,扩大其面积;逐步推行全程机械化耕作,尤其是要解决甘蔗机收问题;科学施肥,提高肥效,减少肥料投入;生控为主,化控为辅,多种措施配合,综合防控蔗田有害生物;加强农田基本建设,增加灌溉面积;应用化学催熟增糖,提高榨季早期甘蔗蔗糖分。以此降低甘蔗生产成本,增强我国甘蔗产业竞争力。 相似文献