Automatic lowering for cable lift in power failure

摘要

Emergency lowering is carried out automatically in the event of building power failure by a DC driven series-wound motor. The lift car is lowered to its bottom-most stopping point, after which the car door and lift shaft door are opened. The supply for control and for the door operation is through an uninterrupted power supply, and the supply for the DC motor is from batteries. The stages of the system comprise (1)120 U-profile with an 82.5m hole, (2) 2 iron plates (3) Flat bar (4) 100 U-profile (5) 120 U-profile.