UDC 637.116
DOI 10.36461/NP.2025.75.3.023

RESEARCH RESULTS ON A MILKING MACHINE WITH TEAT CUPS FOR COMPRESSION-SQUEEZING STROKE
A.V. Yashin, Candidate of Technical Sciences, Associate Professor; V.D. Badov, Senior Lecturer
Penza State Agrarian University, Penza, Russia
tel. +79273907570 e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

This article deals with the research results on intensity of milk ejection, as well as design and dynamic parameters of a milking machine equipped with teat cups for the compression-squeezing stroke. Current research describes operating principals of a laboratory-scale rig designed for examining the milking machine. Milking was simulated using an artificial udder with teats and milk simulators. As part of the experimental research, variable factors were substantiated and selected: thickness and height of the working part of the teat cup were considered as design factors, while the vacuum pressure was considered as a dynamic factor. A matrix close to the D-optimal design for a three-factor experiment was used for the current research. In accordance to the State standard (GOST) 34496-2018 milk removal rate was taken as the indicator for assessing the technological process of milking machine. A prototype milking machine with teat cups has been designed and cvonstructed. Mathematical results were assessed using the following computer programs: Statistica 12, Math CAD 13, Microsoft Excel 2010. The experimental research results on the intensity of milk removal by a milking machine with teat cups at a compression stroke with squeezing showed that the most efficient design and dynamic parameters are: vacuum pressure – 47996 (48000) Pa, thickness of the working part of the teat cup – 0.0146 (0.0015) m, height of the working part of the teat cup from the suction cup – 0.0278 (0.028) m. Highly-mentioned date on design and dynamic parameters of a milking machine equipped with teat cups for the compression-squeezing stroke points out the increase in milk secretion intensity at 2.89 (2.86) l/min, which is by 14.4% better compared to the control milking machine ADU-1.
Keywords: milking machine, teat cup, stage, milk secretion intensity, experimental research.

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