NUMERICAL CALCULATION OF THE HYDROLIQUID LEAKAGE THROUGH THE RADIAL CLEARANCE OF THE CONNECTED ELEMENTS ON THE TOWER CRANE HYDROCILINDER
https://doi.org/10.26518/2071-7296-2019-1-18-30
Abstract
Introduction. The authors present the numerical calculation of the hydro-liquid leakage through
the radial clearance of the “piston - hydraulic cylinder” conjugate node on the basis of determining
the sealing elements’ resource of the tower crane hydraulic cylinder.
Materials and methods. The authors use the method of mathematical modeling, which makes it possible to model the containing elements’ interaction of different physical nature on the unified methodological basis. Moreover, the paper presents such simulation systems as Simulation (finite element method), Flow Simulation (finite volume method) of the SolidWorks CAD program and Simulink Matlab with expansion packs.
Results. As a result, the authors demonstrate the three-dimensional and irregular cross-section conjugation model of the radial clearance in the “piston - hydraulic cylinder” conjugate node. In addition, the authors propose the calculating method of the hydraulic cylinder tightness. Such method establishes the following scheme: “load on the hydraulic cylinder —number of operating cycles — uneven radial clearance between the piston and the liner — amount of fluid leakage — shrinkage of the rod”.
Discussion and conclusions. The results of the research make it possible to increase the reliability of the power hydraulic cylinders of the road construction machines and equipment.
About the Authors
D. A. Potakhov
Emperor Alexander I St. Petersburg State Transport University, St. Petersburg
Russian Federation
Russian Federation
Postgraduate Student, Department of Lifting and Transport, Track and Construction Machinery
190031, St. Petersburg, 9, Moskovsky Ave.
Ya. S. Vatulin
Emperor Alexander I St. Petersburg State Transport University, St. Petersburg
Russian Federation
Russian Federation
Candidate of Technical Sciences, Associate Professor of the Department of Lifting and Transport
190031, St. Petersburg, 9, Moskovsky Ave.
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Review
For citations:
Potakhov D.A., Vatulin Ya.S. NUMERICAL CALCULATION OF THE HYDROLIQUID LEAKAGE THROUGH THE RADIAL CLEARANCE OF THE CONNECTED ELEMENTS ON THE TOWER CRANE HYDROCILINDER. The Russian Automobile and Highway Industry Journal. 2019;16(1):18-30. (In Russ.) https://doi.org/10.26518/2071-7296-2019-1-18-30
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