CLEARANCE FIT DESIGN OF A HYDRAULIC CYLINDER WITH PARTICLE POLLUTED BY HYDRAULIC OIL

Abstract

In hydraulic cylinder systems, oil pollution results in wear and leakage of hydraulic cylinder components. In accordance with the actual working conditions of a certain type of hydraulic cylinder, the technology of fluid–solid thermal coupling and multiphase flow analysis is applied to analyze the heat–fluid–solid coupling of hydraulic cylinder under the condition of particle polluted by hydraulic oil. The distribution law of the heat field of hydraulic cylinder was obtained through analysis. The results show the effect of heat flow on the partial load effect. The distribution rules of particles in the hydraulic cylinder were obtained under the influence of different gaps and particle pollutants. The damage rate of the hydraulic cylinder under these working conditions was analyzed by optimizing the plunger and cylinder clearance fit and providing important technical support to solve the problem of hydraulic oil leakage in hydraulic cylindersIn hydraulic cylinder systems, oil pollution results in wear and leakage of hydraulic cylinder components. In accordance with the actual working conditions of a certain type of hydraulic cylinder, the technology of fluid–solid thermal coupling and multiphase flow analysis is applied to analyze the heat–fluid–solid coupling of hydraulic cylinder under the condition of particle polluted by hydraulic oil. The distribution law of the heat field of hydraulic cylinder was obtained through analysis. The results show the effect of heat flow on the partial load effect. The distribution rules of particles in the hydraulic cylinder were obtained under the influence of different gaps and particle pollutants. The damage rate of the hydraulic cylinder under these working conditions was analyzed by optimizing the plunger and cylinder clearance fit and providing important technical support to solve the problem of hydraulic oil leakage in hydraulic cylinders