Lifting height limiter

The utility model discloses a lifting height limiter, which has the advantages of simple structure, small size, accurate control and real-time display of the accurate value of a rotating speed. The lifting height limiter is provided with a rotary position-limiting mechanical switch which is arranged...

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Bibliographic Details
Main Author LIU ZEZHOU
Format Patent
LanguageChinese
English
Published 11.11.2009
Subjects
CAPSTANS
HAULING
HOISTING
HOISTS
LIFTING
PERFORMING OPERATIONS
TACKLES, e.g. PULLEY BLOCKS
TRANSPORTING
WINCHES
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Summary:The utility model discloses a lifting height limiter, which has the advantages of simple structure, small size, accurate control and real-time display of the accurate value of a rotating speed. The lifting height limiter is provided with a rotary position-limiting mechanical switch which is arranged beside a winding drum shaft of a crane, and is characterized by also comprising a rotary encoder which is arranged on the winding drum shaft of the crane and a digital quantity speed-measuring sensor which is arranged to be corresponding to rotary encoder; the output of the digital quantity speed-measuring sensor is connected with a proportional operation amplifier; and the output of the proportional operation amplifier is connected with a display circuit, an alarm circuit and a super elevation control execution circuit.
Bibliography:Application Number: CN20082232332U