Lifting cylinders of a lifting stand of a mobile working machine

摘要

The present invention relates to a lifting cylinder (10) of a lifting stand of a mobile machine, in particular of an industrial truck, wherein said lift cylinder (10) a cylinder housing (11) and a in the cylinder housing (11) longitudinally displaceable piston rod (12), wherein for the extended piston rod (12), a mechanical stop (20) is provided, of the cooperating stop surfaces (20a, 20b) of the piston rod (12) and of a cylinder head (11c) of the cylinder housing (11) is formed, on the extending tip of the piston rod (12) a connecting point (ap) is formed, with which the piston rod (12) with a liftable and lowerable component (4) of the lifting frame (1) is coupled. The stop surfaces (20a, 20b) on the piston rod (12) and on the cylinder head (11c) are arranged in a curved or inclined in such a manner that, in the extended end position of the piston rod (12) and cooperating stop surfaces (20a, 20b) an instantaneous center of rotation (mp) of the extended piston rod (12) is obtained, which in the region of the connecting point (ap) of the piston rod (12) is arranged.