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US 6,805,222 B2Granted
Method and apparatus for adjusting steering angle for elevator sheave
AssigneeOtis Elevator Company
InventorsBruce St. Pierre, Bruce P. Swaybill, Boris G. Traktovenko, Mark F. Orelup
Life of this patent
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Abstract
A steering angle of an elevator sheave on a shaft is adjusted at installation and subsequently during maintenance by one of several embodiments. In one embodiment, a bolt with a jam nut is adjusted to position the shaft precisely. In another embodiment, a tee bracket is anchored to a hoistway wall, and a jack bolt with shims is used to adjust the vertical placement of the long beams that support the elevator car frame and therefore the shaft.
Claims8
Apparatus for adjusting a steering angle of an elevator sheave that is mounted on a shaft, said apparatus comprising:
- means for retaining said shaft so that the shaft can be adjustably positioned in a first plane and a second plane;
- a flat rope that is engaged by said sheave, said flat rope having a desired entry position and a desired exit direction with respect to said sheave;
- and
- at least one of a first positioning means for adjusting the position of said shaft in said first plane and a second positioning means for adjusting the position of said shaft in said second plane, wherein the flat rope is maintained in proper alignment as it passes over said sheave, wherein said retaining means includes a shaft mounting member having an opening for receiving one end of said shaft and a lever mounted to said shaft mounting member, said lever including an opening aligned with the opening of said shaft mounting member for receiving said end of said shaft, and in which said lever is pivotally mounted to said shaft mounting member.
1 more element
Dependencies are inferred from the claim text.