确定无支承轮前犁拖拉机的垂直摆动

Q3 Mathematics

Eastern-European Journal of Enterprise Technologies Pub Date : 2024-02-28 DOI:10.15587/1729-4061.2024.296842

Volodymyr Nadykto, Gennadii Golub, V. Kyurchev, N. Tsyvenkova, Gennadii Petrov, Yaroslav Yarosh

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引用次数: 0

摘要

本研究的对象是一台配有无支撑轮前置犁的拖拉机。避免使用压载物的一种方法是使用在 "推动 "模式下工作的前置犁。通常，这种犁至少配备一个支撑轮。借助所构建的数学模型以及相应的振幅和相位频率特性，对拖拉机前轴的垂直摆动动力学进行了研究，该拖拉机配有一个不带支撑轮的前置犁。犁侧面作用在拖拉机上的总力的垂直波动被视为干扰影响因素。模拟结果表明，拖拉机前轴的垂直负载增加 600 千克时，动态系统外部干扰的振幅值会明显减小，相位会明显增加。扰动振荡的频率越高，这些特性就越容易被接受。研究表明，为了改善所研究动态系统对干扰的响应，有必要降低前轮轮胎的刚度系数。在实践中，这可以通过调整轮胎气压来实现。当拖拉机前轮轮胎的阻尼系数在 1 至 3 kN-s/m 范围内增加时，系统的幅频特性几乎没有变化，而相频特性却有所改善。在干扰影响的振荡频率为 0-10 s-1 的范围内，这一点尤为明显。该结果可作为评估带有无支撑轮前轮犁的拖拉机在耕作作业中的效率的依据。在实际执行本文提出的关于拖拉机前轮轮胎设计参数选择的建议的条件下，可以实现这种效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Determining vertical oscillations of front-plow tractor without support wheel

The object of this study is a tractor with a front plow without a support wheel. One way to avoid the use of ballast is to use front-mounted plows that operate under the "push" mode. As a rule, such plows are equipped with at least one supporting wheel. The presence of the latter complicates the structure of the plow and, of course, affects the degree of vertical load on the steered wheels of the mobile vehicle. With the help of the constructed mathematical model and the corresponding amplitude and phase frequency characteristics, the dynamics of vertical oscillations of the front axle of a tractor with a front mounted plow without a support wheel were investigated. Vertical fluctuations of the total force acting on the tractor from the side of the plow were considered as a disturbing influence. According to the simulation results, an increase in the vertical load of the front axle of the tractor by 600 kg causes a desired decrease in the value of the amplitude and an increase in the phase of external disturbances of the dynamic system. The higher the frequency of disturbance oscillations, the more acceptable these characteristics become. It was established that in order to improve the response of the studied dynamic system to disturbances, it is necessary to reduce the stiffness coefficient of the tires of the front wheels. In practice, this is achieved by adjusting the air pressure in the tires. The amplitude-frequency characteristics of the system almost do not change when the damping coefficient of the tires of the front wheels of the tractor is increased in the range from 1 to 3 kN·s/m, while the phase-frequency characteristics improve. This is especially noticeable at the frequencies of oscillations of the disturbing influence in the range of 0–10 s-1. The results could be used as a basis for evaluating the efficiency of tractors with a front plow without a support wheel in tillage operations. Such efficiency can be achieved under the condition of practical implementation of the recommendations proposed in this paper regarding the selection of design parameters of tires for the front wheels of the tractor

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来源期刊

Eastern-European Journal of Enterprise Technologies Mathematics-Applied Mathematics

CiteScore

2.00

自引率

0.00%

发文量

369

审稿时长

6 weeks

期刊介绍： Terminology used in the title of the "East European Journal of Enterprise Technologies" - "enterprise technologies" should be read as "industrial technologies". "Eastern-European Journal of Enterprise Technologies" publishes all those best ideas from the science, which can be introduced in the industry. Since, obtaining the high-quality, competitive industrial products is based on introducing high technologies from various independent spheres of scientific researches, but united by a common end result - a finished high-technology product. Among these scientific spheres, there are engineering, power engineering and energy saving, technologies of inorganic and organic substances and materials science, information technologies and control systems. Publishing scientific papers in these directions are the main development "vectors" of the "Eastern-European Journal of Enterprise Technologies". Since, these are those directions of scientific researches, the results of which can be directly used in modern industrial production: space and aircraft industry, instrument-making industry, mechanical engineering, power engineering, chemical industry and metallurgy.