MECHANISM OF BACKHOE COLUMN ROTATION Russian patent published in 2017 - IPC B66C13/42 

FIELD: transportation.

SUBSTANCE: mechanism of backhoe column rotation comprises a rotary column with a gear fixed on it, a geared rack installed inside hydraulic cylinders, into pistons of which damping devices are built, and in covers of hydraulic cylinders there are channels communicating with a distributor of a basic machine hydraulic system. In the mechanism of backhoe column rotation the piston cavities of hydraulic cylinders, as their working fluid pressure increases above the preliminary charing of a hydraulic accumulator, are connected to it via check valves and a discharge hydraulic line, and as their working fluid pressure drops below the atmospheric one, are connected via check valves and a drainage line to a hydraulic reservoir.

EFFECT: reduced losses of capacity and increased efficiency of performed works as a whole.

1 dwg