| 摘要 |
PURPOSE:To obtain a stable device of high accuracy by providing a pattern generating means, oil hydraulic pump connected to an electric motor, cage speed and cage position detecting means by a rope connected to a cage and a rotary speed and rotary angle detecting means connected to the electric motor. CONSTITUTION:A pattern generating means for outputting a speed signal in accordance with a predetermined pattern to perform a speed control of an electric motor 13 at the time of lifting an elevator, oil hydraulic pump 12 connected to and driven by the electric motor 13, cage speed and position detecting device 8 by a rope 8b connected to a cage 5 and link-provided along a lift path 1 and a rotary speed and rotary angle detecting device 14 of the electric motor 13 connected thereto are provided. Accordingly, since a cage speed and a cage position are fed back to a control system by the rope 8b of the device 8, an influence by a leak of oil in the oil hydraulic pump 12 is suppressed, while since responsiveness of the cage at the time of its lower operation is quickened by the device 14, a shock for the cage 5 is eliminated with smooth lowering action obtained. |
