| 摘要 |
PROBLEM TO BE SOLVED: To effectively control the vibration of an elevator car at the time of traveling with a low-cost device by arranging a pressure accumulator and a semi-active hitch assembly including a piston to be controlled by a variable orifice valve between a rope and the elevator car in parallel with each other. SOLUTION: An elevator car is suspended by a semi-active hitch assembly 36 through a main rope 14, and the main rope 14 is connected to a rope terminator 49 through a support plate 40 and a hitch plate 46. Plural driven hitch spring elements 52 are arranged between the terminator 49 and the hitch plate 46, and on the other hand, a semi-active hitch assembly 36 having a variable orifice valve 44 connected to a pair of cylinders 42A and a piston 42B through a hydraulic circuit 47 is arranged between the hitch plate 46 and the support plate 40. Each cylinder 42A is connected to the pressure accumulator 50 so that the pressure liquid can be supplied and discharged. |
