| 摘要 |
The invention relates to a door drive mechanism (1), especially a revolving door drive mechanism. Said drive mechanism comprises a drive unit (2), coupled to the door via an output shaft (9) and arranged in a housing (13), a motor (3), functionally linked with the drive unit (2), and a spring energy storage device (4) housed in the housing (13) and coupled to the motor (3) and the drive unit (2). The invention is characterized in that a hydraulic pump (5) in the form of a proportional piston pump is functionally linked with the motor (3) and hydraulically linked with a first hydraulic compartment (6) associated with the drive unit (2) and with a separate second pressure compartment (7) associated with the spring energy storage device (4). The drive mechanism is further provided with a hydraulic damping device that is arranged between a receiving compartment for the drive unit (2) and an intermediate space of the housing (13) adjoining the second pressure compartment (7). |
