プラネタリーギヤ型水圧モータのトルク特性

概要

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In recent years, water hydraulic system is expected as an environmental friendly drivesystem because it uses pure water as pressure medium. Pumps, motors and valves used inhigh pressure level about 14MPa have been manufactured and used in industrial applications.However, development of low pressure water hydraulic components has not been progressed.Especially, low pressure water hydraulic motors are still very few. Using the lower pressuredecreases the cost of hydraulic systems, and increases safety and easy usage. The purpose ofthis study is to make clear a principle of torque generation in the planetary gear waterhydraulic motor and to calculate the theoretical output torque numerically. A computerprogram to calculate the theoretical output torque of the motor is developed in this study. Asthe results, it was confirmed that the program makes it possible for us to calculate thepulsating torque wave and the rate of the pulsation, and that the mean value of the calculatedtorque is pretty close to the value of the average torque induced by energy equation. The effectof change in a dimension of the rotor on the output torque is also revealed.
2009-01-31