Tandem sheave assembly, and method to install an elevator car having a tandem sheave
AssigneeOtis Elevator Company
InventorsDonald C. Root, Mario Uttaro
Life of this patent
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Abstract
A tandem sheave assembly for an elevator car includes a hitch plate having an aperture to permit variable positioning of the tandem sheave assembly. A method to install an elevator car includes the steps of: attaching the sheave frame to the car frame via a shaft engaged with the car frame and hitch plate; positioning the sheave frame by rotating the sheave frame about the shaft; and fastening the sheave frame into the desired position by inserting fasteners through the aperture in the hitch plate.
Claims10
An elevator car including:
- a car frame including a cross-beam, the cross-beam having an underside;
- a sheave frame including a pair of sheaves;
- and
- a hitch plate assembly including a hitch plate and one or more fasteners, the hitch plate secured to the sheave frame and fastened to the cross-beam by the one or more fasteners to dispose the sheave frame in a fixed manner to the underside of the cross-beam, the hitch plate having an aperture through which the one or more fasteners pass to connect together the underside of the cross-beam and the hitch plate, and wherein the aperture is sized to permit variable positioning of the one or more fasteners such that the relative positioning of the sheave frame to the car frame is adjustable.
A method to install an elevator car of an elevator system, the elevator car including a car frame and a tandem sheave, the tandem sheave including a sheave frame, a pair of sheaves, and a hitch plate assembly, the hitch plate assembly including a hitch plate having an aperture, one or more fasteners, and a shaft, including the steps of:
- attaching the sheave frame to the car frame by engaging the shaft with the car frame and the hitch plate;
- positioning the sheave frame relative to the car frame by rotating the sheave frame about the shaft to the desired position;
- and
- fastening the sheave frame into the desired position by inserting the one or more fasteners through the aperture and engaging the one or more fasteners with the car frame and the hitch plate.
Dependencies are inferred from the claim text.