| 摘要 |
The hook (1) comprises a link (2) for receiving a lifting means for the construction part, the link comprising an endless elongated link piece (3), and an anchor (4) for fixing the link to the construction part being lifted. The anchor part comprises a first portion with a first lead-through (15) for a first screw bolt (45) used to secure this portion to the construction part; a second portion with a second lead-through (17) for a second screw bolt (47) used to secure this portion to the construction part; a connecting portion (6) between the first and second portions which includes a lead-through (16) for locating the link piece, allowing the link to pivot relative to the anchor about the length direction of the link portion extending through this lead-through; and a contact side (8) intended for contact with the construction part and forming part of a straight geometric boundary plane (9). The central length axes of the first and second lead-throughs extend transverse to the boundary plane, intersecting it at first and second points respectively. The link lead-through includes an opening direction extending parallel to the boundary plane and transverse to a geometric axis (10) passing through the two intersection points. Independent claims are also included for the following: (1) Construction part, e.g. roof, floor or wall section, having at least one of these crane hooks fixed to it; (2) Method for positioning a construction part inside a construction by engaging a lifting device with the link in a crane hook fixed to the construction part and then lifting this part; and (3) Use of one of these crane hooks fixed to a construction part for attaching a safety device intended to protect one or more people by preventing this part from falling onto them. |
