Elevator with traction sheave

Details Elevator with traction sheave Elevator with traction sheave

1987-03-16

1988-07-12

Skaggs, H. Grant

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

254264, B66B 1104

Patent

active

047563885

ABSTRACT:
An elevator has a drive mechanism connected to a traction sheave provided with grooves, over which run parallel suspension cables, and an elevator cage and an associated counterweight suspended from the suspension cables. The elevator is also provided with at least two diverting pulleys over which the suspension cables run and of which at least one diverting pulley is associated with the traction sheave in such manner that the suspension cables extending from the elevator cage to the counterweight have first and second wraps around the traction sheave and, between these wraps, a further wrap around the diverting pulley. Prior art traction sheave elevators exhibit insufficient friction between the traction sheave and the suspension cable, for which reason it is necessary, in the case of elevators of great heights, to use so-called compensating cables, which add to the weight of the elevator. With the present invention, this disadvantage is avoided by giving each of the first and second wraps an angle of wrap of at least 180.degree..

REFERENCES:
patent: 4591025 (1986-05-01), Honda

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