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A STUDY OF CRANK HOE TILLAGE FOR DEEP TILLING

曲柄锄耕深耕技术的研究

基本信息

批准号：
63560235
负责人：
BANNO Tatsuya
金额：
$ 1.47万
依托单位：
IWATE UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63560235/
关键词：
four-bar linkage pendulous hoe vibrating machine soil penetration burying property of soil tillage methods soil pulverization mechanical manipulation of soil 反転性耕うんトルク振動深耕

项目摘要

The authors described the synthesis of four-bar linkage system to generate a desired function for new tillage machine, CRANK HOE that is a kind of pendulous hoe. Mathematical simulation of motion of four-bar linkage and field test were carried out with four combinations of coupler-lever lengths respectively.The shape of the soil slices cut off by the pendulous hoe, depends on the mutual ratio of the length of the links constituting the driving mechanism. Small soil slices can be obtained at high frequency of oscillations. Big soil slices and deep penetration can be obtained at low frequency and B or C type of blade curve. Especially, blade tips attached to the edge has effective turning property of throwing big soil slices in the paddy field. The soil moisture content affects the burying property of hoe and four kinds of hoe tested have no significant differences in dry condition field.Power spectral analysis technique is used to analyze the time varying nature of a vibrating tillage implement, CRANK HOE during tillage operations. The vibrations generated by the four-bar-linkage occurs at high frequency in which the distributed parts of the implement are excited. The vibrations caused by the interactions between the blades and soils rises in the low frequency ranges that the tractor-implement system oscillates as a mass-spring system.

本文介绍了一种新型耕作机械--曲柄锄--的四连杆机构的综合方法。对四连杆机构的运动进行了数学模拟，并分别在四种连杆长度组合下进行了田间试验，结果表明，摆动式锄铲起的土片形状取决于组成驱动机构的连杆长度的相互比值。在高频振动下可以得到小的土壤切片。在低频和B或C型叶片曲线下，可以获得大的土壤切片和深的穿透。特别是附着在刀刃上的刀片具有在稻田中抛撒大土片的有效转弯性能。土壤含水量影响锄头的埋置性能，在干旱条件下，四种试验锄头的埋置性能差异不显著。本文采用功率谱分析技术，分析了振动式耕整机--曲柄锄头在耕作过程中的时变特性。由四连杆机构产生的振动以高频率发生，在该高频率下，机具的分布部件被激励。由叶片和土壤之间的相互作用引起的振动在拖拉机-机具系统作为质量-弹簧系统振荡的低频范围内上升。