HYDRAULIC PUMPS WITH A RECIPROCALLY ROTATING BARREL

摘要

The inventive hydraulic pump comprises pitons (6) carried by a rotational barrel (4) which is driven by driving shaft of the pump motor (1), wherein the end of the barrel (l4) opposite to the heads (6a) of the pistons (6) is flat-shaped and applied to the top face (11) of the head (10) of the pump by the thrust (T) of the pistons. Said head (10) is provided with bores (14, 15) which connect the pump to a reservoir and hydraulic equipment fed by compressed liquid. The bores (14, 15) are connected to two openings (12, 13) embodied on said front face (11) of the head (10). The inventive pump is characterised in that the openings (12, 13) have different sizes, i.e. the surface (5) of the intake opening (13) is substentially larger than the surface (s) of the outtake opening (12). The head (10) is disposed in such a way that it is pivotable approximately at 180 DEG , thereby making it possible to inverse the direction of rotation of the shaft of the pump motor (1), the openings (12, 13) preserving the respective functions thereof, i.e. the intake opening (13) and the outtake opening (12).