ANALYSIS OF THE LOADING AND FRICTION CONDITIONS OF THE PLUNGER-BUSHING TRIBO-CONJUGATION IN A HYDRAULIC MOTOR (HYDRAULIC PUMP)

Владимир Николаевич Доценко, Иван Григорьевич Лихошерст

Abstract


Processes in elements of axial-piston hydraulic machines that are widely used in hydraulic systems of aviation and space technology are considered. The analysis of the main force factors that affect the plunger during operation as part of the hydraulic motor is carried out. The effect of the hydrodynamic forces acting between the surfaces of the plunger and the sleeve is analyzed, which significantly changes the pattern of the load distribution between the contact zones. The size of the actual zones of direct contact of the plunger in the sleeve is estimated, which characterizes the presence of both semi-liquid friction regime and zones of fluid (hydrodynamic) friction.


Keywords


piston; bush; a hydraulic motor; loads; friction conditions

References


Sheypak, A. A., Lepeshkyn, A. V., Mykhaylyn A. A. Hydravlyka y hydropnevmopryvod: Uchebnoe posobye. Ch.2. Hydravlycheskye mashyny y hydropnevmopryvod [Hydraulics and hydropneumatic drive: Textbook. Part 2. Hydraulic machines and hydropneumatic drive]. Moscow, MHYU Publ., 2003. 192 p.

Bashta, T. M. Mashynostroytel'naya hydravlyka [Engineering hydraulics]. Moscow, Mashynostroenye Publ., 1971. 672 p.

Zawistowski, T., Kleiber, M. Gap Flow Simulation Methods in High Pressure Variable Displacement Axial Piston Pumps. Archives of computational methods in engineering, 2017, vol. 24, no. 3, pp. 543-556. DOI: 10.1007/s11831-016-9180-5.

Ivantisinova, M. The Piston Cylinder Assembly in Piston Machines – a long Journey of Discovery. Hidrostatični pogoni [Hydrostatic drives], 2012, no. 18 (5), pp. 374-385.




DOI: https://doi.org/10.32620/aktt.2017.4.07