| 摘要 |
The automatic end-of-stroke device for motoreducers mounted on the central shaft of rolling doors relates to a device which presents a series of characteristics improved with repsect to devices used to the same aim today. The object is to automatically regulate the positioning of microswitches to control the raising and lowering of rolling doors when actuated by the motoreducer of the associated door. In general, it is comprised of a "U"-shaped support (1) wherein three rods extend longitudinally, one of them being a central threaded rod (2) and embodying the spindle for displacing a driving part threaded thereon and with function of nut which complements this screw-nut device, and the other two parallel and lateral rods (6 and 7) provided with an annular grooving. On the lateral rods are incorporated the two ends-of-stroke (8 and 9) which are integrated with the entrainment part through a common strip (12) which may be removed for making independent both ends-of-stroke and placing them in an axially distant position corresponding to the raising and lowering situations of the door, the drive or entrainment part being the actuating element for the microswitches of the ends-of-stroke. The locking of each end-of-stroke in its selected position is achieved by providing it, in addition to its corresponding microswitch, with a rocking finger (11) which nails into the grooves of the grooved rod on which it slides when the entrainment part, which maintained it disconnected, moves away. |
