Mobile crane which does not require securing measures if hydraulics fail

摘要

The mobile crane has a counterweight plate (20) with two spaced-out fingers extending vertically. Their endfaces have a plate over the finger cross section. The dolly plate (18) has holding webs on the upper side for locking to the upper trolley (11). On the underside, it has a T-shaped groove lying on a turning arc of the upper trolley with aperture cross section somewhat larger than the longitudinal section of the finger plate.