ELEVATOR

摘要

An elevator, which includes a hoistway; and an elevator car vertically movable in the hoistway; and a counterweight vertically movable in the hoistway; and a number of upper rope wheels (in particular one or more) mounted higher than the car and counterweight, and a number of first ropes interconnecting the elevator car and counterweight, each of the more ropes passing around the one or more upper rope wheels; and a number of lower rope wheels mounted lower than the car and counterweight; and second ropes interconnecting the elevator car and counterweight, each passing around one or more of the lower rope wheels. The lower rope wheels include one or more first lower rope wheels; and one or more second lower rope wheels above the one or more first rope wheels. The second ropes include a first set of ropes forming a first U-shaped loop of ropes hanging from the car and counterweight and passing around the one or more first lower rope wheels; and a second set of ropes forming a second U-shaped loop of ropes hanging from the car and counterweight inside the first loop of ropes and passing around the one or more second lower rope wheels.

主权项

1. An elevator, comprising:
a hoistway; an elevator car vertically movable in the hoistway; a counterweight vertically movable in the hoistway; a number of upper rope wheels mounted higher than the car and counterweight; a number of first ropes interconnecting the elevator car and counterweight, each of said first ropes passing around said upper rope wheels; a number of lower rope wheels mounted lower than the car and counterweight; a number of second ropes interconnecting the elevator car and counterweight, each of said second ropes passing around one or more of the lower rope wheels; wherein said lower rope wheels comprise:
one or more first lower rope wheels; andone or more second lower rope wheels above the one or more first rope wheels; and wherein said second ropes comprise:
a first set of ropes forming a first U-shaped loop of ropes hanging from the car and counterweight, and passing around said one or more first lower rope wheels; anda second set of ropes forming a second U-shaped loop of ropes hanging from the car and counterweight, inside the first loop of ropes, and passing around said one or more second lower rope wheels.