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Substantiation of rational drive parameters for reliable operation of heavy-loaded mechanisms

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Category: Geotechnical and mining mechanical engineering, machine building

Last Updated on 10 November 2019

Published on 26 October 2019

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Authors:

I.M.Matsyuk, Cand. Sc. (Tech.), Assoc. Prof., orcid.org/0000-0002-0861-0933, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

E.М.Shlyahov, orcid.org/0000-0001-5983-9853, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O.I.Yehurnov, Cand. Sc. (Tech.), Ana-Tems Ltd, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract:

Purpose. To evaluate the influence of driven crank parameters on the location of different sets of a mechanism with the fourth-class structural group.

Methodology. A theoretical study on the influence of the input crank parameters on the positioning of different sets of the mechanism of a double-jaw crushing machine using the Mathcad software was carried out.

Findings. It is shown that:

- the center of rotation and the length of the crank in the fourth-class mechanism should be positioned in a certain area;

- the choice of specific positioning of the crank can eliminate the dangerous proximity of two adjacent sets of the mechanisms of the fourth-class structural group.

Originality. An algorithm of defining a zone of positioning the rotational center and length of a crank is determined for plain mechanisms of the fourth-class structural group. It has also been found that probability of spontaneous transition from one assembly to another closely-spaced assembly in heavy-loaded mechanisms can be reduced significantly by choosing the appropriate rotational center of a crank.

Practical value. An algorithm of actions is proposed, which makes it possible to choose an assembly which ensures its good functioning during the synthesis of a plain heavy loaded mechanism of the fourth class.

References.

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