Lifting device for duct cover, has receiving device with downward hook units and hook plates, which are inserted into longitudinal slots or opening and are slided with their projections under bottom side of covers

摘要

The device has a wagon (3) with wheels supported to it, and a receiving device for a duct cover with longitudinal slots or manhole cover with circular shaped openings arranged in a ring. An operating handle is linked with the wagon over a rod. A receiving device has a downward hook unit (8) and hook plate, which are inserted into the slots or the opening and are slided with their projections under the bottom side of the covers.