| 摘要 |
<p>A hydraulic pump provides unidirectional fluid flow regardless of the direction of rotation of the rotary shaft (18) of the pump. The rotary shaft is affixed to a rotating arm (30), which arm includes a spherical bearing (64) in the outer end thereof which secures to the pin (58) of a plunger (52). The rotary shaft is inclined at an angle to the axis of the plunger, resulting in a reciprocating action of the plunger when the rotary shaft is turned. The pump may be motorized by a variety of different power sources, and preferably includes a speed reduction (24) for such motors in order to allow smaller motors and valve assemblies. The valves are preferably included in an easily removable and replaceable integrated cartridge (76), thus enabling the pump to be quickly adapted to various types of hydraulic devices, such as jacks, hoists, presses, etc.</p> |
