Gantry crane electrical safety devices and their effect

Gantry crane electrical safety devices and their effect



(1) lighting switch box: to ensure that the job site lighting and bell power.
(2) travel limit switch:sino hoist to limit motor driven mechanical operation within a certain range to prevent motor driven mechanical offside accidents.
(3) Emergency switch: installed in the cab next to the driver in case of an accident or emergency so that the driver easily and quickly cut off the power supply control circuit.
(4) cabin door safety switch: installed on the office doors and hatches to prevent people going up and down the crane or the  steel crane  walkway above work, the driver blindly send electrical accidents.
(5) Fuse: short-circuit protection and control circuits.
(6) Over current relay: protect the primary circuit and motor overload and short circuit.
(7) the controller zero contact:bridge gantry crane Protect zero start, to prevent the controller handle in working position can send electric start. The motor running their own accident.