矿山机械环面行星执行单元刀具运动轨迹形式的研究

Denys Dovhal
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The characteristic features of the change in the shape of the trajectories are revealed when the values of the design and operating parameters of the executive body are varied, and their frequency is determined. Scientific novelty. For the first time, in the general case, a mathematical model of the process of movement of a single tool of a torus planetary executive body was analyzed in order to identify all possible characteristic forms of trajectories and, as a result, face surfaces, which constitute the basis for further research and optimization of the kinematic and dynamic characteristics of the process of destruction of a rock mass by executive bodies of mining machines. of the specified type. Practical significance. Scientifically substantiated data on the influence of the values ​​of the design and operating parameters on the parameters of the tool path, the degree of surface treatment of the face and the conditions for the transition of the torus executive body to other design cases of the planetary executive body have been obtained. 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摘要

目的。这项工作的目的是确定和几何分析刀具轨迹的可能形式,这取决于采矿机器在破坏岩体或矿物时的环面行星执行机构的设计和操作参数。方法。研究的基础是分析和微分几何的规定,物体、过程和现象的几何建模,岩石和煤的破坏理论,以及采矿机器的行星执行机构理论。结果。在建立环面行星执行机构工作过程数学模型的基础上,考虑了单刀具空间运动轨迹的主要形式,并对其进行了几何分析。揭示了执行机构设计参数和运行参数值变化时轨迹形状变化的特征特征,并确定了轨迹形状变化的频率。科学的新奇。在一般情况下,首次分析了环面行星执行机构单个工具运动过程的数学模型,以便确定轨迹的所有可能特征形式,从而确定表面,这为进一步研究和优化采矿机械执行机构破坏岩体过程的运动学和动力学特性奠定了基础。指定类型的。现实意义。获得了设计参数值和操作参数值对刀轨参数、端面表面处理程度的影响以及环面执行机构向行星执行机构其他设计情况过渡的条件的科学依据数据。所有这些都将使今后有可能确定环面执行机构的设计和运行参数之间的合理关系,从而提供有效的切割“网格”,从而最大限度地减少破坏过程的能量指标,提高分离岩体的分数组成。
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RESEARCH OF THE FORMS OF MOTION TRAJECTORIES OF THE WORKING TOOL OF TOROIDAL PLANETARY EXECUTIVE UNITS OF MINING MACHINES
Purpose. The purpose of this work is to determine and geometric analysis of possible forms of trajectories of the working tool, depending on the design and operating parameters of the torus planetary executive bodies of mining machines in the destruction of rock mass or minerals. Methods. Studies are based on the provisions of analytical and differential geometry, geometric modeling of objects, processes and phenomena, the theory of destruction of rocks and coal, as well as the theory of planetary executive bodies of mining machines. Results. On the basis of the mathematical model of the working process of the torus planetary executive body, the main forms of the trajectory of the spatial motion of a single working tool are considered, their geometric analysis is carried out. The characteristic features of the change in the shape of the trajectories are revealed when the values of the design and operating parameters of the executive body are varied, and their frequency is determined. Scientific novelty. For the first time, in the general case, a mathematical model of the process of movement of a single tool of a torus planetary executive body was analyzed in order to identify all possible characteristic forms of trajectories and, as a result, face surfaces, which constitute the basis for further research and optimization of the kinematic and dynamic characteristics of the process of destruction of a rock mass by executive bodies of mining machines. of the specified type. Practical significance. Scientifically substantiated data on the influence of the values ​​of the design and operating parameters on the parameters of the tool path, the degree of surface treatment of the face and the conditions for the transition of the torus executive body to other design cases of the planetary executive body have been obtained. All this in the future will make it possible to determine rational relationships between the design and operating parameters of the torus executive body, which will provide an effective “grid” of cutting, which will minimize the energy indicators of the destruction process and improve the fractional composition of the separated rock mass.
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