Hydraulic drive device with two pressure spaces and method for operating a hydraulic drive device with two pressure spaces

摘要

The invention relates to a hydraulic drive device with a in a cylinder chamber which is displaceably guided along an operational axis, a limiting pressure chamber which can be pressurized with hydraulic fluid piston and with an at least in some sections of the piston is guided between different control states of control means for controlling the flow rate of the hydraulic fluid from a high pressure supply in the working pressure space for moving the piston in the working direction and from the working pressure space to a return chamber, wherein the the pressure chamber region of the piston facing away from a low-pressure space is limited, which during operation of the device from a low pressure air supply for hydraulic fluid is acted upon by pressure in such a way that the piston against the working direction is move when the control means the working pressure space with the return chamber connects. The present invention also relates to a method for operating a hydraulic drive device.