| 摘要 |
<p>The pump or hydraulic motor uses pistons in which valves are fitted. In the body (1) are three cylinders (2). A shaft (3) rotates on bearings (4) and has on it eccentrics (5), each with a groove (7) on its outer surface (12). Each piston (9) has an axial pipe (10) sliding in the cylinder (2). It is pressed on a shoe (11), pressing on the eccentric surface (12) by a spring (14) between the piston and piston head (13) at the top of the cylinder. The shoe has a central hole (15) communicating with the eccentric surface or groove and the axial pipe (10). Each cylinder has a transverse groove (16) into which protrudes a circular groove (17) in the outside of the piston. The grooves (7) form the pump suction via a hole (6) and a fluid feed pipe (8).</p> |
