BRAKE FORCE MEASURING DEVICE FOR ELEVATOR

PROBLEM TO BE SOLVED: To accurately measure brake force of a brake machine even in the case of generating a slip between a main rope and a hoist sheave when an elevator is in an emergency stop. SOLUTION: A device comprises speed detection means 11, 12 respectively detecting a speed of a hoist sheave...

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Bibliographische Detailangaben
Hauptverfasser:	SANEKANE ATSUSHI, YAGAWA SHOJI, ANDO TAKEYOSHI, ISHIDA REI
Format:	Patent
Sprache:	eng
Schlagworte:	ELEVATORS ESCALATORS OR MOVING WALKWAYS HAULING HOISTING LIFTING PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To accurately measure brake force of a brake machine even in the case of generating a slip between a main rope and a hoist sheave when an elevator is in an emergency stop. SOLUTION: A device comprises speed detection means 11, 12 respectively detecting a speed of a hoist sheave 8 and a beam pulley 9 winding a main rope 7 to output a speed data, memory part 18 storing the speed data and an arithmetic part 19 calculating the point of time generating a slip between the main rope 7 and the hoist sheave 8 also calculating brake force of a brake machine 3. In the case of emergency stopping an elevator, based on the speed data stored in the memory part 18, the point of time generating a slip between the main rope 7 and the hoist sheave 8 is calculated, and when no relation is provided at all to an influence according to slip generation, that is, brake force of the brake machine 3 just before generating a slip is calculated.