Lorry-mounted crane

The invention relates to a lorry-mounted crane which comprises an automotive chassis. The automotive chassis is provided with a packing box capable of being opened automatically and a hoisting tool arranged in the packing box and matched with a hoisting hook for achieving hoisting, the packing box comprises a packing box base plate fixedly arranged on the automotive chassis, a left box plate and aright box plate, the left box plate and the right box plate are arranged between a first packing box frame and a second packing box frame and are hinged, the first packing box frame is provided witha first locking assembly for locking the left box plate and the right box plate on the first packing box frame, the second packing box frame is provided with a second locking assembly for locking theleft box plate and the right box plate on the second box frame, the first packing box frame is provided with a first overturning assembly for driving the right box plate to be overturned to the position above the left box plate