Disclosure of state uncertainty of the roller chain based on cross-correlation

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Authors:


K.Sosnin, orcid.org/0000-0003-4922-8041, Dnipro University of Technology, Dnipro, Ukraine, email: This email address is being protected from spambots. You need JavaScript enabled to view it.

O.Gerasina, orcid.org/0000-0002-8196-0657, Dnipro University of Technology, Dnipro, Ukraine, email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Yu.Ribalchenko, orcid.org/0000-0003-1363-9885, Dnipro University of Technology, Dnipro, Ukraine, email: This email address is being protected from spambots. You need JavaScript enabled to view it.

G.Schullerus, orcid.org/0000-0001-9740-9213, Reutlingen University, Reutlingen, the Federal Republic of Germany, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


повний текст / full article



Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2022, (1): 057 - 062

https://doi.org/10.33271/nvngu/2022-1/057



Abstract:



Purpose.
Reducing the downtime of transport equipment due to technical malfunction of the chain transmission by disclosing the uncertainty in the friction change of the plate roller open-chain through the estimation of the chain friction coefficient at idle speed.


Methodology.
To achieve the goal, the following tasks were set: to carry out a research on the change in the plate roller chain friction at idle speed; to develop a method for evaluating friction in the roller plate chain at idle speed. Research on the state of the roller plate chain in laboratory conditions is carried out on the bench by measuring the motor torque during the rotation of the chain. Data processing of the random process of changing the state of the plate roller open-chain predetermines the use of methods of mathematical statistics and correlation analysis.


Findings.
The research carried out to control the state of the plate roller chain made it possible to disclose the static dependence of the change in friction per day and the correlation dependence of the change in friction in the chain for all days of the experiment. To estimate the change in the state of the conveyor chains, a method was developed for determining the friction coefficient of the plate roller chain through the torque of the motor rotating the open-chain. During the experiment, the increase in the coefficient of friction was more than 20 percent.


Originality.
The relation of the change in the parameter of the torque of the motor rotating the chain at idle speed during the experiment due to the change in the friction of the chain or the sliding speed in the joints of the chain was disclosed.


Practical value.
It consists in using the developed method for estimation of the friction in the open-chain at idle speed for planning the timing of scheduled maintenance of transport equipment. An increase in the magnitude of the motor torque that rotates the open-chain at idle speed is associated with a decrease in the sliding speed of the chain joints, an increase in the friction coefficient, which is a criterion for estimation the state of the drive chain. The results of changing the friction coefficient of the developed method showed similarity with the results of the correlation method for estimation of the state of the roller plate chain.



Keywords:
roller plate chain, sliding speed, open-chain friction, wear, correlation analysis

References.


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