Aerial work platform fly jib luffing device

The invention relates to the technical field of fly jib luffing devices, and discloses an aerial work platform fly jib luffing device which comprises a main luffing mechanism, a mast head is in transmission connection with a telescopic fly jib through the main luffing mechanism, the main luffing mechanism comprises a short pull rod, a long pull rod, a connecting base and a luffing oil cylinder, the connecting base is fixedly installed at the bottom of the telescopic fly jib, and the luffing oil cylinder is connected with the mast head. The short pull rod is movably connected to one side of the head of the mast, the variable-amplitude oil cylinder is movably connected to the bottom end of the short pull rod, the output end of the variable-amplitude oil cylinder is movably connected to the bottom of the connecting base, and the short pull rod is movably connected with the telescopic fly boom through the long pull rod. Up-down amplitude variation of the telescopic fly jib is achieved through the main amplitude v