Hydraulically operated splitting device

A hydraulically operated splitting device comprising:

• a piston-cylinder unit with an extending chamber and a retracting chamber, in which a piston is supported displaceable in an extending direction and a retracting direction, allowing the projecting chamber and the retracting chamber to be impinged with pressurized hydraulic medium for moving the piston with a displacement speed,
• a cylinder housing at which a plurality of pressure pads is supported in a displaceable manner and perpendicular to the extending direction and the retracting direction,
• a wedged lance connected to a piston rod of the piston and movable with said piston, which engages wedge-shaped pressure areas of the pressure pads, which are complementary to the wedged lance, and displaces the pressure pads depending on the position of the piston in the piston cylinder unit perpendicular to the extending direction and the retracting direction,
• a lubricating unit by which lubricant can be inserted from a lubricant reservoir between the wedged lance and the pressure pads, with
• the splitting device comprising a protective unit by which the displacement speed can be reduced depending on a fill level of the lubricant in the lubricant reservoir, and
• wherein the protective unit is embodied such that only the displacement speed during an extension of the piston can be reduced.