| 摘要 |
The fire-protection door has trolleys which are adjustably used in fixed seam-like guides. One of the sections of the blade is connected to a driving side-drive device. The blade has elastic sleeve (2) that is in the form of an uninterrupted strip of fire-resistant material, which is supported on a set of supporting arms (4) connected by joints (5). Each supporting arm and the corresponding portion of the sleeve form a single section (3) of the blade, while the carriers (6) of the blade sections are connected with each second joint of supporting arms. |
