Elevator – industrial lift truck – or stationary lift for vehicle – Having independent supports carrying distinct loads and...
Patent
1994-07-08
1996-10-22
Noland, Kenneth
Elevator, industrial lift truck, or stationary lift for vehicle
Having independent supports carrying distinct loads and...
187257, B66B 900
Patent
active
055667848
ABSTRACT:
An elevator system employing a self-propelled elevator car is disclosed. One embodiment of the elevator system includes an elevator car (10) arranged for travel along a hoistway (12), a plurality of electric motors (16) disposed on the elevator car (10), a plurality of traction rollers (22) fixed to torque output shafts (20) of the electric motors (16) respectively, a pair of guide rails (14), which are in engagement with the traction rollers (22), extending along the hoistway (12). According to the invention, firstly, because the elevator car (10) is self-propelled by the electric motors (16) disposed on the elevator car (10), neither rope nor counterweight is necessary unlike some existing elevators. Secondly, the torque provided by each of the electric motors (16) is directly transmitted to the guide rails (14) via each of the traction rollers (22). Thus, on the one hand, there is a less complicated torque transmission mechanism with the elevator system. On the other hand, the noise emitted from the torque transmission mechanism may be reduced compared with that from some conventional torque transmission mechanisms, for example, a gear box or a chain. Thirdly, various types of conventional driving means could be employed in the present invention, e.g., an ac motor or a dc motor. Therefore, traditional speed regulating methods and devices may be applied.
REFERENCES:
patent: 2052690 (1936-09-01), Austin
patent: 2514498 (1950-07-01), Kesler
patent: 5117946 (1992-06-01), Traktovenko et al.
patent: 5158156 (1992-10-01), Okuma et al.
patent: 5183980 (1993-02-01), Okuma et al.
patent: 5197570 (1993-03-01), Matsui
patent: 5203432 (1993-04-01), Grinaski
patent: 5234079 (1993-08-01), Nomura
patent: 5235144 (1993-08-01), Matsui et al.
patent: 5288956 (1994-02-01), Kadokura et al.
patent: 5464072 (1995-11-01), Muller
Noland Kenneth
Otis Elevator Company
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