Secondary sudden stop device of crane

The utility model relates to a secondary emergency stop device of a crane, which comprises a power distribution box for controlling the crane, an intermediate relay KM1, a power supply cut-off receiver and a remote control transmitter capable of being in paired communication connection with the powe...

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Bibliographic Details
Main Authors WANG WEI, LIU JIEMIN, MASU KATSUMITSU, WEI LONGFENG, ZHENG RONGJIE, SONG QINGDAO, LI DONGHAI
Format Patent
LanguageChinese
English
Published 05.05.2023
Subjects
CRANES
HAULING
HOISTING
LIFTING
LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES
PERFORMING OPERATIONS
TRANSPORTING
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Summary:The utility model relates to a secondary emergency stop device of a crane, which comprises a power distribution box for controlling the crane, an intermediate relay KM1, a power supply cut-off receiver and a remote control transmitter capable of being in paired communication connection with the power supply cut-off receiver, the intermediate relay KM1 is provided with a normally closed switch K1, and the main contactor is arranged in the power distribution box. A controller and an intermediate relay KM2 controlled by the controller are arranged in the power cut-off receiver, the intermediate relay KM2 is provided with a normally closed switch K2, a coil of the main contactor is connected with the normally closed switch K1 in series to form a circuit I, a coil of the intermediate relay KM1 is connected with the normally closed switch K2 in series to form a circuit II, and the circuit I and the circuit II are connected between power lines in parallel. According to the utility model, when the crane is out of ord
Bibliography:Application Number: CN202222440076U