| 摘要 |
A lift includes a cable member longitudinally movable by a lift drive unit, a lift connected to one of the ends of the cable member for lifting an object such as a vehicle along a lift passage, a balance weight (7) connected to the other end of the cable member and movable along a balance-weight lift passage, a detection device (1ka, 1kb) for detecting a height of the balance weight to check whether or not the balance weight is positioned higher than a lower end of the balance weight lift passage by a predetermined value when said lift unit is moved to its uppermost position, and a warning device for warning of an abnormal elongation of the cable member if the detection device detects that the balance weight is not within position. Preferably the lift is prevented from operating when such a condition is detected. Preferably the lift also includes detectors for the vehicle position on entering the lift. <IMAGE> |
