Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1990-02-23
1993-08-03
Stephan, Steven L.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 300
Patent
active
052331393
ABSTRACT:
The present invention refers to a method of detecting of physical parameters, in particular parameters of motion, of a freight and/or of a passenger elevator whose elevator car is attached to a cable pull means driven by a traction sheave. The task to be solved by the present invention is the task of suggesting an examination method for examining such elevators, which reduces the expenditure of work in comparison with hitherto known examination methods and which increases the examination quality at the same time. In accordance with the present invention, this task is solved by the features that the physical parameters of the elevator are detected by connecting to the cable pull means and/or to the traction sheave at least one displacement pick-up for producing displacement signals, connecting the displacement pick-ups to an evaluation unit, which includes a timer, so as to supply the displacement signals to the evaluation unit, and connecting the evaluation unit to switching points of the control circuit, which have applied thereto signals controlling the sequence of motions of the elevator, so as to determine physical parameters on the basis of the displacement signals and the control signals. The method can be used in an advantageous manner for checking the driving capacity of the traction sheave.
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patent: 4930604 (1990-06-01), Schienda et al.
patent: 4936136 (1990-06-01), Vanhala
Dougherty Thomas M.
Stephan Steven L.
Tuv Bayern E.V.
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