Development and Characteristic Analysis of New Concept Tillage Machineries

新概念耕整机械的发展及特点分析

• 批准号: 05660288
• 负责人: KAMIDE Junichi
• 金额: $ 1.15万
• 依托单位: Yamagata 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: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05660288/
• 关键词: Powered disk; Invert at same position; plow; model test; invert of furrow slice; force component; rigid model; simulation

(1) Study on a Powered Disk TillerQuantitative evalution of tillage characteristics of a powered disk tiller was made by investigating three component forces acting on a single disk blade and power requirements under various operating conditions in a soil bin.Tested disks were about 1/3 scale of a commercial disk, and were considered as being part of the shell of a hollow sphere. The draft forces acting on a single disk blade and the torque rotating disk were measured by a L shaped beam for component forces and a torque-meter respectively. A powered disk tiller should provide more efficient utilization of energy through reduction of tractor tire slippage. A part of the disk rotating power returns back to the disk device, so that the thrusting effect occurs.(2) Study on a Plow to Invert Furrow Slice at the Same PositionConventional moldboard plow inverts a furrow slice with transverse displacement. Therefore, secondary tillage must be performed after plowing to even the field surface. This paper describes a new inverting moldboard plow which inverts furrow slices at the same position.The new plow was symmetrically constructed with shares moldboards, and side pressure boards which were perpendicularly fixed to the moldboards. The furrow slices are turned by the moldboard while changing the direction of flow by the side pressure board. Some experiments in laboratry showed that the furrow slice was successfully inverted at the same position.Three component forces acting on the small scaled new plow were measured in the laboratory under various conditions of soil moisture and plowing speed.Acceleration components of the furrow slice were measured in x, y and z directions of moving coordinates by a accelerometer and the acceleration was calculated with the transformation formula which will be set up based on analyzes using a rigid scale model.The forces acting on the plow were analyzed with a rigid model in which a furrow slice was assumed to be a rigid body.

(1)动力圆盘耕作机的研究通过在土槽中研究单个圆盘耕作机的三分力和不同作业条件下的功率需求，定量地评价了动力圆盘耕作机的耕作特性。分别用L形分力梁和扭矩仪测量了作用在单圆盘叶片和扭矩旋转圆盘上的牵引力。动力圆盘耕作机应该通过减少拖拉机轮胎打滑来提供更有效的能量利用。盘旋转动力的一部分返回到盘装置，从而产生推力效应。(2)同位置翻转犁片的研究传统的铧式犁是在横向位移的情况下翻转犁片。因此，必须在翻耕后进行二次耕作，使田面平整。本文介绍了一种新型翻转式犁体，它是将犁体翻转在同一位置，犁体对称地由共用犁体和垂直固定在犁体上的侧压板组成。犁板使犁片翻转，侧压板改变水流方向。通过室内试验，成功地实现了犁片在同一位置的翻转，在不同土壤含水量和犁速条件下，测量了小型新型犁片的三个分力，测量了犁片在x方向上的加速度分量，并对犁片的受力情况进行了分析。通过加速度计测量运动坐标的y和z方向，并利用变换公式计算加速度，采用刚体模型分析了犁体的受力情况，将犁体的犁片视为刚体。