Shaft guide alignment measurement
AssigneeVaal Reefs Exploration and Mining Company Limited
InventorRonald M. K. McKechnie
Life of this patent
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Abstract
A conveyance guide alignment measuring device adapted to track along conveyance guides in a shaft, such as a lift shaft, comprises a substantially rigid frame, roller assemblies at either end of the frame and a sub-frame movably suspended from the frame. A pair of opposed roller assemblies are mounted in the sub-frame. The roller assemblies include a fixed assembly which engages a reference guide in the shaft and an outwardly biased assembly which engages an opposed conveyance guide. The sub-frame, being freely suspended, follows any misalignment in the guides and motion sensors are mounted to detect and measure relative motion of the frame, the sub-frame and the roller assemblies mounted on the sub-frame whereby predetermined alignment parameters of the conveyance guides may be determined.
Claims9
A conveyance guide alignment measuring device adapted to track along conveyance guides extending along a shaft comprising a substantially rigid frame, opposed roller assemblies at either end of the frame, the assemblies on one side of the frame being rigidly mounted on the frame for engagement with a reference guide and the assemblies opposed thereto on the other side of the frame being biased resiliently outwardly for engagement with a second guide, a sub-frame movably suspended from the frame and including a roller assembly rigidly mounted on the sub-frame for engagement with the reference guide and a roller assembly biased outwardly from the sub-frame for engagement with the second guide, and motion sensors mounted to detect and measure relative motion of the frame, the sub-frame and the roller assemblies mounted on the sub-frame.
Dependencies are inferred from the claim text.