PLANETARY-TYPE HYDRAULIC MOTOR Russian patent published in 2008 - IPC F03C2/08 

FIELD: general engineering; positive-displacement rotary machines.

SUBSTANCE: covers in planetary-type hydraulic motor are secured on planetary wheel. Device to provide orbital movement of planetary wheel is made at side on end face surfaces of cover and housing so that rectangular frame of planetary wheel is made in form of bead on end face surface of cover and is arranged, together with intermediate frame, in rectangular slot on inner end face surface of housing. Distributing device is made coaxially to shaft in form of two bushings. Inner bushing is fixed and made as sliding bearings of one of bearing supports of rotor, being rigidly coupled with housing and constantly communicating through channels with high and low pressure spaces. Outer bushing is sliding, installed on fixed bushing for rotation, is rigidly coupled with shaft and with inner gear and it constantly communicates through its channels with channels of inner gear and alternately, at rotation, with channels of fixed bushing.

EFFECT: reduced axial and radial dimensions of hydraulic motor, increased mechanical efficiency and torque.

2 cl, 3 dwg