Elevator car vibration control with friction damper

Details Elevator car vibration control with friction damper Elevator car vibration control with friction damper

B - Operations, Transporting

66

B

187/13

B66B 11/04 (2006.01) B66B 7/08 (2006.01)

Patent

CA 1233756

Abstract Elevator Car Vibration Control With Friction Damper In an elevator, a crossbeam or crosshead extends across the top of the car and a thimble rod extends through this beam. The car is suspended on a spring which surrounds the rod and that is located on one side of the beam. Located on the other side of the beam is a block assembly which grasps the rod and a vertical pin that is attached to the beam, for the purpose of providing dampening to the car. A characteristic of this block assembly is that it allows some lost motion, during which there is no dampening, and this has, as an effect, extremely effective noise isolation between the rope and the car, but at the same time substantial dampening - for larger, more undesirable motions by the car.

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