Additional parameters in the technical diagnostics of hydraulic cylinders
https://doi.org/10.26518/2071-7296-2026-23-2-184-195
EDN: DYUEMR
Abstract
Introduction. The service life of the hydraulic drive for ground vehicle working parts depends on their timely diagnostics. Failure of the hydraulic system during operation in difficult conditions can lead to significant financial wastes to restore its operability. To prevent sudden failures of hydraulic cylinders, diagnostics should be carried out taking into account the indicators based on the results, which can be applied to define the technical condition.
Materials and methods. The study is based on the use of a transient process (hydraulic support) and fluid flow between the cavities of a hydraulic cylinder with a leakage detection in the piston-sleeve interface and obtaining response characteristics to these factors. It is proposed to use the pressure rise rate (pressure rise angle) as a response parameter. This article provides a theoretical analysis. It has been established that the rate of pressure rise in the drain line can be used as a diagnostic parameter, which takes into account pressure and leaks in the hydraulic cylinder.
Results. As a result of the study, the effect of leakage between the cavities of the hydraulic cylinder on the angle of pressure increase has been established, experiments have also been conducted to determine the effect of pipeline type on the rate of pressure rise due to the influence of the volumetric stiffness coefficient.
Discussion and conclusion. The study has confirmed the influence of the volumetric stiffness of the pipelines on the pressure rise angle. The pressure rise angle for the high-pressure hoses ranged from 43.1 to 40.7 degrees (a difference of 17.5%), inclusive, and for the steel pipeline from 45.7 to 44.5 (a difference of 20.3%), respectively, which indicates the influence of the rigidity of the hydraulic drive pipeline on the pressure rise angle.
About the Authors
A. P. Miller
Perm State Agro-Technological University named after academician D.N. Pryanishnikov;
Perm National Research Polytechnic University
Russian Federation
Russian Federation
Miller Alexandr P. – Postgraduate student, Department of Automobiles and Technological Machines; Senior lecturer, Department of Technical Service and Repair of Machines
29, Komsomolskiy Prospect, Perm, 614990
23, Petropavlovskaya street, Perm, 614990
K. G. Pugin
Perm State Agro-Technological University named after academician D.N. Pryanishnikov;
Perm National Research Polytechnic University
Russian Federation
Russian Federation
Pugin Konstantin G. – Dr. of Sci. (Engineering), Professor, Department of Automobiles and Technological Machines; Doctor of Engineering Sciences, Associate Professor, Head of the Department of Construction Technologies
29, Komsomolskiy Prospekt, Perm, 614990
23, Petropavlovskaya street, Perm, 614990
i. F. Shaikhov
Perm State Agro-Technological University named after academician D.N. Pryanishnikov
Russian Federation
Russian Federation
Shaikhov Rinat F. – Cand. of Sci. (Engineering), Associate Professor, Head of the Department of Technical Service and Repair of Machinery
23, Petropavlovskaya street, Perm, 614990
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Review
For citations:
Miller A.P., Pugin K.G., Shaikhov i.F. Additional parameters in the technical diagnostics of hydraulic cylinders. The Russian Automobile and Highway Industry Journal. 2026;23(2):184-195. (In Russ.) https://doi.org/10.26518/2071-7296-2026-23-2-184-195. EDN: DYUEMR
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