Assembly of pre-assembled lift-and-slide doors under an overhang

Shortly before Christmas in the Bavarian town of Dillingen, Heavydrive fitted two pre-assembled lift-and-slide doors, the largest of which measured 5.9m x 2.1m. The elements each weighed 850kg and 650kg and had to be installed under a 4m-deep overhang..

The team used the Heavydrive MRK 195 assembly crane with an assembly jig. Access was only possible through a very wet field, but this did not pose a problem for the device’s crawler track. A specially designed 3-axle overhead manipulator was adapted to fit the crane and to be able to suction especially wide elements. The device could then easily grip the sliding doors and move them backwards into position. Heavydrive’s mini crawler cranes operate on a telescopic system and can be pivoted and extended hydraulically, and the manipulator can be operated remotely along three axes, so the experienced Heavydrive operator was able to guide the lift-and-slide doors safely around the building’s tight corners, under the overhang and into their final position. The elements were secured with simple brackets and no additional lifting devices were needed for the fitting. It only took the team half an hour to assemble the pane elements. Heavydrive also fitted four other pre-assembled sash doors.