METHOD AND SYSTEM FOR CONTINUOUS CONDITION MONITORING OF HOIST CHAINS

METHOD AND SYSTEM FOR CONTINUOUS CONDITION MONITORING OF HOIST CHAINS

In order to provide an improved method and system for continuous condition monitoring of a hoist chain (3) implementation of the following steps is suggested: - detecting with at least one sensor (9a, 9b) a presence/absence of chain links (3a, 3a', 3a'', 3a''', 3a'...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KEROVUORI, Juhani, NEHETE, Rajesh, JOKINIEMI, Kimi, BERTULA, Ari, PATIL, Kiran, PATTAR, Prathamesh, RAKSHE, Amit, ATTARDE, Kiran, PERSICO, Giuliano, MELLANEN, Roope
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CAPSTANS
HAULING
HOISTING
HOISTS
LIFTING
PERFORMING OPERATIONS
TACKLES, e.g. PULLEY BLOCKS
TRANSPORTING
WINCHES
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Beschreibung
Zusammenfassung:In order to provide an improved method and system for continuous condition monitoring of a hoist chain (3) implementation of the following steps is suggested: - detecting with at least one sensor (9a, 9b) a presence/absence of chain links (3a, 3a', 3a'', 3a''', 3a''', 3a''') and/or of teeth (7a, 7a', 7a'') of a chain sprocket (7), - determining with an evaluation unit (11), using a signal obtained from the sensor(s) (9a, 9b), time intervals (Ton1, Toff2, Ton3, Toff4) reflecting the presence/absence, and - determining with the evaluation unit (11) sums (SUM1, SUM2) of the time intervals, - determining with the evaluation unit (11) a chain speed, and - comparing with the evaluation unit (11) the first sum (SUM1) with the second sum (SUM2) in order to determine an elongation of the hoist chain (3), wherein each time interval was determined at the same chain speed.