Hydraulic apparatus for receiving overflow oil of a hydraulic motor and returning it to forced circulation, and working machine provided with a forced circulation driven hydraulic motor

摘要

Hydraulic device (1) for receiving and returning to the pressure circulation of a hydraulic motor overflowing oil consists of a reservoir part (26) comprising an air tight liquid space (23) connected to at least one connection (21) and a drainage part (25) configured to in a first stage of operation (I), the volume of the liquid compartment (23) decreases by displacing a wall (19) and releasing the wall (19) in a second working stage (II) to enable the volume of the liquid compartment (23) to increase. The drainage part (25) comprises a connector (10) that is coupled or can be connected to hydraulic circulation (55) to allow the wall (19) to shift, enabling the volume of the volume of the volume (23) to be increased, in particular by firing a movable piston (5) and / or piston rod (6) to weigh the movement of the wall (19).