THE INFLUENCE OF CONSTRUCTIVE AND TECHNOLOGICAL PARAMETERS ON DYNAMIC LOADS IN ELEMENTS OF A PLANETARY MILL WITH A BELT DRIVE

VAITEKHOVICH P.E., D.Sc. in Eng., Prof., Head of the Department of Machines and Apparatus for Chemical and Silicate Productions, Belarusian State Technological University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

KHVES’KO G.M., Ph.D. in Eng., Assistant Professor the Department of Theoretical Mechanics, Belarusian State Technological University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

BOROVSKIY D.N., Ph.D. in Eng., Assistant Lecturer the Department of Machines and Apparatus for Chemical and Silicate Productions, Belarusian State Technological University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

ILYASHENKO E.O., Junior Researcher the Department of Machines and Apparatus for Chemical and Silicate Productions, Belarusian State Technological University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

The issues associated with determination of dynamic loads encountered in moving the nodes of the planetary mill with a belt drive are considered. The analysis of the influence of constructive and technological parameters on their size is carried out. For the study, a horizontal planetary mill was chosen, since it has great potential for organizing a closed grinding cycle with continuous loading and unloading of the material. A computational scheme was compiled, the analysis of which showed that the problem can be solved in the same plane. Since the geometric parameters of individual units of the aggregate exert a great influence on the nature of the feeding motion in the grinding drums of a planetary mill, geometric criteria reflecting the relationship between these parameters were derived. During the power calculation of the planetary mill drive, inertial forces were determined that exert a significant influence on the motion. Taking into account previously determined forces, the equations of kinetostatics were compiled. From these equations, expressions were obtained for determining the final sought-for value-reaction on the drum axis. Approbation of the methodology for calculating this reaction was carried out on a planetary mill with the dimensions of a real industrial facility. In the course of the study, parameters such as the angular velocity of the carrier, the ratio of the geometric parameters and the degree of loading of the drums varied. Changes in the required parameters were analyzed during one complete rotation of the carrier. As a result of the study, a number of dependencies were obtained. Having made an assessment of the results obtained, it can be noted that the change in the reference reaction occurs according to the cosine law in a small range. It is also established that an increase in the angular velocity and the loading factor leads to a significant increase in dynamic loads. In addition, the influence of the ratio of the dimensions of individual units of the aggregate on the magnitude of dynamic loads was investigated. The overall result of the work is the development of a method for calculating dynamic loads on the support nodes of a planetary mill, taking into account the effect of the maximum number of parameters.

planetary mill, rotational speed, mill loading, bearing assembly, drum volume, belt drive, gear drive, dynamic loads, support reaction

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