Tandem variable displacement axial piston hydraulic pumps
(closed circuit) AHP HYDRAULIKA

PVK units are axial piston pumps of slipper design. Rotor of this pump is driven by shaft which is supported by 2 roller bearings. Inside of the rotor, there are moving 9, hydrostatically balanced, pistons parallel with an axis of rotation. They are slipping on the inclined thrust plate which is placed inside of the swash plate and this way, the pistons are moving with a straight-line motion.
They create 1 suction and 1 pressure stroke per revolution. Fluid direction is performed by frontal rotational distribution. Single cylinders are joined either with a suction channel or a pressure one of the end cap during a motion of the distributor. Swash plate angle is possible to regulate continuously with various ways of control and automatic regulations (mentioned in 5, 5.1 and 9.1) which are part of axial piston pump.
These units are designed for conversion of mechanical energy into pressure one. They can be used in closed loops of various machines (e.g. road, construction, grading, agricultural, forest, mining etc.) where is demanded a continuous change of input parameters. The loop has to be designed such way that pump parameters, which are determined by technical conditions and project of the specific application , must not be exceeded during an operation.

More specifications...