MACHINE HYDRAULIC DRIVE Russian patent published in 2004 - IPC

FIELD: mechanical engineering; displacement control transmissions.

SUBSTANCE: proposed hydraulic drive contains drive pump, turnable eccentric, turnable eccentric control device made in form of turnable hydraulic motor-regulator in one housing with drive pump and separated from pump by wall, manual metering pump, reversible valve and two rotary hydraulic motors with brake, overrunning clutch built into wheel hub, and piping system. Drive pump has multifaced pistons installed on turnable eccentric. Cylindrical space of turnable eccentric is provided with gear rim engaging with gear wheel installed on one end of turnable bushing. Second end of turnable bushing is passed through hole in dividing wall and gets into space of hydraulic motor-regulator. Space of hydraulic motor-regulator is divided by gats into four parts. Opposite parts of space communicate through radial channels, ring groove and common shaft, ring groove made in left-hand support wall of housing and pipelines with space of manual metering pump. Second space of manual metering pump communicates through pipelines, ring space made in right-hand wall of housing and radial channels made in second gate bushing with two other opposite parts of said space of hydraulic motor-regulator.

EFFECT: reduced overall dimensions, simplified design, improved control of hub motor.

3 cl, 8 dwg