| 摘要 |
The invention relates to a mechanism for lifting a prefabricated sandwich unit. A unit (1) comprises a core element (2) of a heat insulating material and surface layers (3, 4) present on its two opposite main surfaces, said surface layers being laminated on the core element by applying the same with a bonding agent to the core element's opposite main surfaces. The surface layers include bead sections (5a, 5b) at least on one side of the unit, the lifting mechanism being adapted to be placed for a lifting operation on said side of the unit provided with the bead sections (5a or 5b). A lifting mechanism (10) comprises a frame member, having one longitudinal edge (21) thereof formed with a first coupling profile (12, 13) for engagement with the bead section of the unit's one surface layer (3), a gripping member (15) adapted to be laterally movable with respect to the frame member, having one edge (22) thereof formed with a second coupling profile (16, 17) for engagement with the bead section of the unit's other surface layer (4), and elements (19, 20) for locking the gripping member (15) relative to the frame member while said first and second coupling profiles (12, 13 and 16, 17) are in position in the bead sections (5a or 5b) of the unit's opposite surface layers (3, 4). |
