Performance optimization and knife dynamics of power tiller operated reaper during wheat harvesting

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY
M. Yamin
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引用次数: 2

Abstract

Mechanized harvesting is one of the components of agricultural mechanization used to overcome grain losses and enhance the production compared to the conventional harvesting. Power tiller operated reapers are quite effective for harvesting practices in small fields and especially in mountainous regions where the crops are grown on terraces. Compared to the tractor mount reaper and combine harvester, it saves fuel and cuts the maximum straw to produce the fodder of almost 4000 kg ha-1 after the threshing operation. Thus, in case of wheat crop, it helps to save a significant energy of 1,524,000 kcal ha-1 avoiding the environmental pollution by infield burn of the straw. However, un-optimized use of power tiller operated reaper may result in high maintenance cost, low efficiency and distress among the small land holding farmers. The main objective of this study was to quantify the optimum cutting knife dynamics by optimizing the performance parameters of power tiller operated reaper like cutting speed, operating speed, cutting index, field capacity and fuel consumption. A combination of forward speed at 2.82 km h -1 and cutting speed at 3.42 km h-1 with cutting index of 1.21 was found to be most effective for a minimum grain harvesting loss of 101.33±1.0 kg ha-1 at a fuel consumption of 6.27±0.030 L ha-1 . A higher field efficiency of 71% was also recorded at cutting index of 1.21 for the same combination of forward and cutting speeds. Locus of cutter bar knife for the optimum combination of forward and cutting speeds helped to examine the operation of crank and cutter bar, prolonging the life of cutting mechanism. Thus, optimized performance of power tiller operated reaper will help to attain higher field efficiency at low fuel consumption and low maintenance.
小麦收获过程中动力分蘖式收割机性能优化及刀动特性研究
与传统收割相比,机械化收割是农业机械化的组成部分之一,用于克服粮食损失和提高产量。动力耕耘机操作的收割机在小田地的收割实践中非常有效,尤其是在作物生长在梯田上的山区。与拖拉机式收割机和联合收割机相比,它节省了燃料,最大限度地减少了秸秆,在脱粒后可生产近4000公斤ha-1的饲料。因此,在小麦作物的情况下,它有助于节省1524000 kcal ha-1的显著能量,避免秸秆内场焚烧对环境的污染。然而,如果不优化使用动力分蘖收割机,可能会导致维护成本高、效率低,并给小农户带来痛苦。本研究的主要目的是通过优化动力分蘖操作收割机的性能参数,如切割速度、操作速度、切割指数、田间容量和燃料消耗,来量化最佳切割刀动力学。在燃料消耗6.27±0.030升ha-1的情况下,2.82公里h-1的前进速度和3.42公里h-2的切割速度(切割指数为1.21)的组合对于101.33±1.0公斤ha-1的最小谷物收获损失最为有效。对于相同的前进速度和切割速度组合,在1.21的切割指数下也记录到71%的较高场效率。刀杆刀具的轨迹是前进速度和切削速度的最佳组合,有助于检查曲柄和刀杆的工作情况,延长切削机构的寿命。因此,优化动力耕耘机的性能将有助于在低油耗和低维护的情况下获得更高的田间效率。
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来源期刊
Pakistan Journal of Agricultural Sciences
Pakistan Journal of Agricultural Sciences AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
1.80
自引率
25.00%
发文量
18
审稿时长
6-12 weeks
期刊介绍: Pakistan Journal of Agricultural Sciences is published in English four times a year. The journal publishes original articles on all aspects of agriculture and allied fields.
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