Elevator Counterweight Pulley

Elevator counterweight pulley description Features: Wear-resistant, long aging, high hardness Material: MC nylon MC nylon is one of the engineering plastic. It is defined as the excellent property plastic applies to replace the steel . It uses widely in the industrial world Advantages of MC

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                             Elevator Counterweight Pulley

1. Traction sheave elevator without counterweight, in which elevator the elevator car is suspended by means of hoisting ropes consisting of a single rope or several parallel ropes, said elevator having a traction sheave which moves the elevator car by means of the hoisting ropes, characterized in that when the elevator car is moving upwards in an emergency stop situation the braking of the operating brake of the elevator is at least partially prevented for at least a part of the stopping distance of the elevator. 


2. Elevator according to claim, characterized in that the elevator has rope portions of the hoisting ropes going upwards and downwards from the elevator car, and the rope portions going upwards from the elevator car are under a first rope tension and the rope portions going downwards from the elevator car are under a second rope tension. 


3. Elevator according to claim 1 or 2, characterized in that the elevator has a compensating system acting on the hoisting ropes for equalizing and/or compensating the rope tension and/or rope elongation and/or for keeping the ratio between the first rope tension and the second rope tension substantially constant. 


4. Elevator according to any one of the preceding claims, characterized in that the operation of the brake when the elevator car is moving upwards in an emergency stop situation is prevented by a control arrangement.


5. Elevator according to any one of the preceding claims, characterized in that the operation of the brake when the elevator car is moving upwards in an emergency stop situation is prevented by means of the structure of the brake.


6. Elevator according to any one of the preceding claims, characterized in that the delay of the operation of the brake when the elevator car is moving upwards in an emergency stop situation is constant.


7. Elevator according to any one of the preceding claims, characterized in that the delay of the operation of the brake when the elevator car is moving upwards in an emergency stop situation is dependent on the speed of the elevator car.


8. Elevator according to any one of the preceding claims, characterized in that the operation of the brake is ensured by a reserve power source.


9. Elevator according to any one of the preceding claims, characterized in that the elevator is applicable for use in high-rise buildings.


10. Method for braking a traction sheave elevator without counterweight, characterized in that when the elevator car is moving upwards in an emergency stop situation the braking of the operating brake of the elevator is at least partially prevented for at least a part of the stopping distance of the elevator.

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Elevator Counterweight Pulley Keep the elevator balanced

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