ANORDNING FOR LYFTNING, TRANSPORT OCH LEGGNING AV BALKAR VID BYGGANDE AV BJELKLAG

摘要

The lifting device is raised by a crane and simultaneously grips a number of beams located on the ground or in a stack. It then lifts, transports and locates the timber on a site for construction of a beam or joist system. - It incorporates twin, frame-shaped components (1, 2) positioned one above the other, and movable relatively to each other vertically. These components carry a number of grippers which are opened and closed as the components are moved relatively to each other.