Forage Harvester Knife Response to Cutting Force
Forage Harvester Knife Response to Cutting Force
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DOI：
10.13031/2013.36047
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发表时间：
1976
影响因子：
1.5
通讯作者：
M. T. Ige;M. F. Finner
中科院分区：
文献类型：
--
作者：
M. T. Ige;M. F. Finner
摘要由于缺乏对切割过程中产生的力的性质以及刀具对这些力的响应的了解，使得对牧草收割机性能的评估变得困难。Prince等人（1958）和Chancellor（1958）曾试图测量切削力。但是，他们的研究结果的实用性受到限制，因为他们在非常低的刀速下工作，只能切割单个或很少的茎。这些条件与饲料收获机的实际工作条件相差甚远。在这项研究中，双刀切割头，由电动机驱动，被用来切割苜蓿深层。对刀片支架进行了测量，以测量切割力和刀片位移。对不同含水量的苜蓿在不同刀速下进行了切割试验。建立了刀具对切削力响应的数学方程。所得的方程是一个二阶微分方程类似的Akriovich（1974）。但所发展的方程是针对转动运动的，而Akriller的方程是针对直线运动的。
ABSTRACT LACK of knowledge about the nature of the forces developed during cutting and the response of the knives to these forces has made the evaluation of the performance of forage harvesters difficult. Attempts have been made by Prince et al. (1958) and Chancellor (1958) to measure the cutting force. But the usefulness of their results was limited by the fact that they worked at very low knife speeds and cut single or very few stems. These conditions are far dif-ferent from the actual operating con-ditions of a forage harvester. In this study, a two knife cutter-head, powered by an electric motor, was used to cut deep layers of alfalfa. The knife supports were instru-mented to measure cutting forces and knife displacement. Measurements for the cutting of alfalfa at different moisture levels were made at various knife speeds. Mathematical equa-tions were developed for the response of the knife to the cutting force. The resultant equation was a second order differential equation similar to that of Akritidis (1974). But the devel-oped equation is for rotational mo-tion while that of Akritidis was for linear motion.