FIELD: transport, lifting devices.
SUBSTANCE: elevator winch interacts with lifting ropes with the help of the rope leading pulley. Note here that the aforesaid ropes have a load-bearing part twisted from wire made from round and/or out-of-round section metal and holds the back-weight and elevator cab moving in their guides. The winch weight makes approximately 1/5 of the elevator rated load. The rope leading pulley OD makes about 250 mm, the said pulley being driven by the elevator winch. Note that the elevator cab and back-weight are suspended using several sections of lifting rope.
EFFECT: smaller sizes and weight of elevator or its winch.
16 cl, 8 dwg
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|
RU2492130C2 |
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RU2725993C1 |
| MEMBER IN TENSION (MODIFICATIONS), TRACTION DRIVE AND ROPE-DRIVING PULLEY FOR LIFTING SYSTEM | 1999 |
|
RU2211888C2 |
