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.
Claims30
An apparatus for adjusting a steering angle of an elevator sheave on a shaft, comprising:
- retaining means for retaining said shaft in a first frame;
- a flat rope reeved over said sheave, said flat rope having an entry direction with respect to said sheave and an exit direction with respect to said sheave;
- and
- first positioning means for adjusting a position of said shaft with respect to said entry direction of said flat rope, whereby an axial direction of said shaft is adjusted to be substantially orthogonal to said entry direction.
An apparatus for adjusting a steering angle of an elevator sheave on a shaft, comprising:
- a retainer retaining said shaft in a first frame;
- a flat rope reeved over said sheave, said flat rope having an entry direction with respect to said sheave and an exit direction with respect to said sheave;
- and
- a first positioning device for adjusting a position of said shaft with respect to said entry direction of said flat rope, whereby an axial direction of said shaft is adjusted to be substantially orthogonal to said entry direction.
Dependencies are inferred from the claim text.