HYDRAULIC MOTOR Russian patent published in 2008 - IPC F03C1/00 A01G25/00 

FIELD: engines and pumps.

SUBSTANCE: device is to be incorporated with hydraulic systems of sprinkling machines and is designed to make the connecting rod reciprocating. The said device can be used, in particular, in agriculture, for mechanisation of irrigation of crops using sprinkler units with their working tool moving over the field and sprinkling water by means of a winding device drive. The hydraulic motor incorporates a dual-action hydraulic cylinder with a rod. The adjustable shutter has a hydraulic drive and a bypass hydraulic channel with an ejector. The piston underside space can communicate in turns, by means of a distributing device, with a delivery pipeline before the shutter and with the ejector. The hydraulic drive working space communicates, via an adjustable throttle, with the said delivery pipeline before the shutter and with the ejector. The channel communicating the distributing device with the hydraulic cylinder piston underside space incorporates a check valve and an adjustable throttle mounted in parallel.

EFFECT: lower power consumption of the hydraulic motor and reduced pressure variations in the delivery line.

2 cl, 3 dwg