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首页> 外文期刊>Agricultural Engineering International: CIGR Ejournal >Optimal design of the tractor-front-mounted sugarcane grab loader
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Optimal design of the tractor-front-mounted sugarcane grab loader

机译:拖拉机前挂式甘蔗抓斗装载机的优化设计

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The percent of sugarcane mechanical sugarcane loading (in Egypt) has not been exceeded 10% because of the poor finance-ability of the farmers to by the imported self-propelled loaders. The local workshops have been attempting to fabricate a sugarcane loader attached to the farm tractors as a cheap alternative. Farmers did not accept the tractor-mounted loaders fabricated locally because of the problems concerning poor efficiency and poor balance of the tractor-mounted loader while operation. The main objective was to overcome the problems concerning precise fabrication of the tractor-front-mounted loader and to develop an efficient dynamically balanced machine. Fabricating a sugarcane grab loader for the tractor faces difficulties due to the variation of the farm tractor types and sizes. Reference to the size of the transport vehicles was supposed to be loaded, the medium size tractors 70-90 hp was considered to be equipped with the sugarcane loader. The most important specifications of the prevailing medium size farm tractors found in the sugarcane production area were recorded through field survey. Important tractor parameters related to the loader design were specified. For the prevailing medium size tractors of power range 70-90 hp, wheel base within 2.4 m. Total tractor weight about three tons, distributes as two thirds on the rear axle and one third on the front axle. The tractor operator is supposed to have clear view over the boom lowered for pilling, so that the height of steering wheel is important parameter determined as 1.9 m for the medium size tractors. Important dimensions such as the tractor chassis dimensions and other dimensions related to the sugarcane loader were identified. A chain of measurements and computations were conducted to facilitate optimizing the design of a tractor mounted sugarcane grab loader dynamically balanced with no need for counterbalance weights. Considering the data of the medium size tractor, the dimension of the loader components computed in accordance. A general formula relates the loader size to the tractor on which the loader supposed to be mounted was developed to facilitate fabricating the balanced loader for any size of the farm tractors. The loader was fabricated and tested in the field. The loader proved high dynamical stability and economical operation efficiency. The field test results show operating the loader for loading sugarcane transport vehicles, loading cycle time was about 1.7 min, loading rate up to 14 ton/h and operation efficiency was over 90%.
机译:(在埃及)甘蔗机械甘蔗装载量的百分比未超过10%,因为农民对进口自走式装载机的财务能力很差。当地的工厂一直在尝试制造一种廉价的替代方案,将一种装在农用拖拉机上的甘蔗装载机制造出来。农民不接受本地制造的安装在拖拉机上的装载机,因为这些问题涉及效率低下以及操作时安装在拖拉机上的装载机的平衡性差的问题。主要目的是克服有关拖拉机前装式装载机精确制造的问题,并开发一种高效的动态平衡机。由于农用拖拉机类型和尺寸的变化,为拖拉机制造甘蔗抓斗装载机面临困难。假定要装载运输车辆的尺寸,则认为70-90 hp的中型拖拉机配备了甘蔗装载机。通过现场调查,记录了在甘蔗生产地区发现的当时流行的中型农用拖拉机的最重要规格。指定了与装载机设计有关的重要拖拉机参数。对于功率范围为70-90 hp的主流中型拖拉机,轴距在2.4 m之内。拖拉机的总重量约为三吨,在后轴上占三分之二,在前轴上占三分之一。拖拉机操作员应该能清楚地看到下降的起重臂架,因此,方向盘的高度是决定中型拖拉机1.9 m的重要参数。确定了重要的尺寸,例如拖拉机底盘尺寸和与甘蔗装载机有关的其他尺寸。进行了一系列的测量和计算,以帮助优化动态平衡且无需配重的拖拉机安装式甘蔗抓斗装载机的设计。考虑到中型拖拉机的数据,根据计算得出的装载机部件的尺寸。一个通用的公式将装载机的尺寸与应该安装装载机的拖拉机相联系,以便于制造适合任何尺寸的农用拖拉机的平衡装载机。该装载机是在现场制造和测试的。装载机具有很高的动态稳定性和经济的运行效率。现场测试结果表明,该装载机用于装载甘蔗运输车辆,装载周期约为1.7分钟,装载速率高达14吨/小时,运行效率超过90%。

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