| 摘要 |
An industrial door, especially in the form of a pneumatically actuable folding or swing door, has a drive part (10) which is arranged in the manner of a power cylinder between a support point (12) and an engagement point (16). The drive part (10) acts via an articulated lever (18) on a pivoting shaft (20) for opening and closing the door (2). To lock the door (2), a locking drive (46) for a locking part (50) is fastened to the drive part (10) by means of a bracket (36). The locking part (50) is designed as a bolt which is prestressed into the locking position by a compression spring (58) and which, in the locking position, engages on a locking nose (64) of a connection piece (24) between the drive parts (10) and the articulated levers (18). Subjecting the locking drive (46) to compressed air moves the locking part (50) back into its release position. To activate the locking drive (46), there is a special control device which possesses, in particular, an auxiliary compressed-air accumulator. <IMAGE> |
