| 摘要 |
An elevator, which comprises a hoistway (H); and an elevator car (1) vertically movable in the hoistway (H); and a counterweight (2) vertically movable in the hoistway (H); and a number of upper rope wheels (3,4) (in particular one or more) mounted higher than the car (1) and counterweight (2), and a number of first ropes (r) interconnecting the elevator car (1) and counterweight (2), each of said more ropes (r) passing around said one or more upper rope wheels (3,4); and a number of lower rope wheels (6,7,8,9) mounted lower than the car and counterweight; and second ropes (R) interconnecting the elevator car (1) and counterweight (2), each passing around one or more of the lower rope wheels (6,7;8,9). Said lower rope wheels (6,7,8,9) comprise one or more first lower rope wheels (6,7); and one or more second lower rope wheels (8,9) above the one or more first rope wheels (6,7). Said second ropes (R) comprise a first set of ropes (R1) forming a first U-shaped loop of ropes hanging from the car (1) and counterweight (2) and passing around said one or more first lower rope wheels (6,7); and a second set of ropes (R2) forming a second U-shaped loop of ropes hanging from the car (1) and counterweight (2) inside the first loop of ropes and passing around said one or more second lower rope wheels (8,9). |
