| 摘要 |
The invention relates to a hydraulic pump with axial pistons which can simultaneously deliver two distinct flow-rates which can supply two separate circuits of a hydraulic drive operating with mineral oil. According to the invention, the pump comprises a central body (1) in which an odd number of bushings (2) is axially arranged, on a dividing diameter, a tube-shaped piston (3) being introduced therein, said piston having two sliding diameters and, together with some blade-shaped intake valves (4.1 and 4.2) fixed on the pistons (3) and with some blade-shaped delivery valves (5.1 and 5.2) fixed on the bushings (2), forming two distinct compression chambers (a and b) wherefrom the oil can be discharged through some separate internal channels (d and e), to two external delivery orifices (f and g) of a cover (15), during the slide of the pistons (3) which are pressed by some springs (6), by means of some detachable heads (7) and some spherical shoes (8), onto a friction disc (9) fixed by two screws (10) to an inclined plane of a wobbling disc (11) which can be rotated to the left or to the right by a driving shaft (12) mounted, by means of some bearings, within another cover (13) having an intake orifice at its bottom part. |
