HYDRAULIC DRIVE Russian patent published in 2018 - IPC F15B11/36 

FIELD: machine building.

SUBSTANCE: hydraulic drive is designed for lifting machines. Hydraulic drive contains two three-position control valves, a hydraulic cylinder, a cylinder, a piston, a rod, a pipe, which is fixed from the side of the piston cavity at the end of the cylinder and connected to the left hydroline from the first three-position valve, is sealed in the piston and enters the inner cavity of the rod, which is connected to the unilateral hydraulic cylinder through the outer end of the rod and the hydrolysis line. Hydrolines from the second three-position valve through one-way locks and one-way chokes are connected to the rod and piston cavities of the hydraulic cylinder.

EFFECT: technical result is the expansion of the functional and operational capabilities of the hydraulic drive.

1 cl, 1 dwg