Article

Received 09.02.2024

Revised 30.05.2024

Accepted 29.06.2024

Retrieved from Vol. 28, No. 1 2024

Pages 123 -132

Musiiko, V., Koval, A., Nikolaienko, V., & Ragulin, V. (2024). Assessment of maneuverability and ensuring controllability of the soil compacting machine under pipeline. The National Transport University Bulletin, 28(1), 123-132. https://doi.org/10.33744/2308-6645-2024-1-58-123-132

Assessment of maneuverability and ensuring controllability of the soil compacting machine under pipeline

V. Musiiko A. Koval V. Nikolaienko V. Ragulin

The article presents the results of theoretical research on the development of a methodology for assessing and ensuring the controllability of special continuous action earth-moving machines that operate in modes of movement along the pipeline, as an object of increased danger. It considers the movement of the machine for backfilling and compacting soil under the pipeline, working in modes of changing the magnitude and coordinates of applying external vertical loads on the chassis's walking mechanism. The assessment of the machine's MP-M controllability was performed for the conditions of the machine's movement along straight sections of the pipeline and on curved sections of the track when the machine moves on a dry dense soil surface and on loamy loosened soil. It was found that the decisive influence on the machine's maneuverability is the magnitude of the shift of the machine's center of pressure on the soil, which is determined by the coordinates of the application of the machine's gravity forces and the external forces that cyclically act on the machine during the soil compaction process. The dependencies for determining the vertical loads on the caterpillars of the base chassis during the soil compaction process under the pipe, when vertical loads acting on the soil-compacting equipment change from zero to its maximum, were obtained. Conditions for possible detachment of one of the machine's caterpillars during the soil compaction process and conditions for the stable movement of the MP-M machine along the pipeline during the soil compaction process under the pipe, despite the redistribution of vertical loads between the caterpillars, were determined. Analytically, conditions for eliminating excessive skidding of the outer caterpillar of the base chassis of the machine during turning in the working mode were established. For given ratios between the base L and track width B of the machine, the minimum radius Rmin of guaranteed turning of the machine moving along a curved section of the pipeline under the condition of the outer, during turning, caterpillar's engagement with the soil was determined

machine, soil compaction, pipeline, load, pressure, chassis, skidding, radius
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https://doi.org/10.33744/2308-6645-2024-1-58-123-132