The invention provides a safety linkage device. The safety linkage device comprises a safety door, a linkage device and a lifting system, wherein an input end and an output end of the linkage device are connected with the safety door and the lifting system respectively; a forward control system and a reverse control system are connected between the lifting system and the linkage device; the linkage device comprises a linkage switch and a linkage relay module; the lifting system comprises an electric hoist and an electric hoist drive motor connected with the electric hoist; the forward control system comprises a forward switch and a forward relay module connected with the forward switch; the reverse control system comprises a reverse switch and a reverse relay module connected with the reverse switch. The linkage switch is added to the safety door, a relay electrically connected with the linkage switch is mounted at the electric hoist drive motor, a starting limiting condition is added to the lifting driving circuit system of the electric hoist, potential safety hazards caused by lifting of the electric hoist when the safety door is not closed are avoided, and the cost is lower.
Safety linkage device
30.12.2015
Patent
Elektronische Ressource
Englisch
IPC: | B66D Haspeln , CAPSTANS |