Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
This study aims to develop a small water hydraulic motor. In the design of the motor, a rotary piston type was adopted, which does not require a special valve mechanism. The basic shape of the rotary piston is a Reuleaux triangle, with apex seals installed at the three vertices. The internal shape of the housing on which the rotor slides was designed to be the envelope of the arc trajectory of the tip of the apex seal. The tangent to the locus of the center of the arc at the tip of the apex seal was determined, and the housing was designed to have a shape that was expanded outward in the normal direction by the radius of the arc. The rotor was made of gunmetal, the apex seal was made of PEEK, and all other parts were made of stainless steel. The dimensions of the motor body are 50 x 50 x 50 mm. The rated pressure is 3.5 MPa, and rotation in both directions is possible by switching the pressure. Experiments showed that the motor can rotate in both directions at low pressure.
