Elevator governor rope block actuation in low speed emergency si

Details Elevator governor rope block actuation in low speed emergency si Elevator governor rope block actuation in low speed emergency si

1991-04-03

1993-02-02

Pellinen, A. D.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187109, B66B 500, B66B 502

Patent

active

051839784

ABSTRACT:
The governor ropes on an elevator are actuated by an emergency tripping system when motion away from a landing zone of the car is detected while the car doors remain open. If the elevator controller receives a "door open" signal and a "car moving out of landing zone" signal concurrently, a solenoid tripper is actuated which causes the governor rope blocks to set on the governor ropes thereby activating the car's emergency brakes. Conventional governor actuation systems can be retrofitted with the solenoid tripper of this invention.

REFERENCES:
patent: 4529065 (1985-07-01), Kraft
patent: 4785914 (1988-11-01), Blain et al.
patent: 4923055 (1990-05-01), Holland
Lubomir Janovsky "Elevator Mechanical Design, Principles and Concepts" International Assoc. of Elevator Engineers, Ellis Horwood Limited Chichester (1987).

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