Forward moving type forklift portal frame with shifting function

The utility model relates to the technical field of forward-moving type forklift equipment, and discloses a forward-moving type forklift portal frame with a shifting function, the forward-moving type forklift portal frame comprises a forklift body, a portal frame body is vertically and fixedly installed at the front end of the forklift body, a fixing frame is connected to the portal frame body in an up-down sliding mode, and a two-way lead screw is rotatably arranged in the middle of the fixing frame; the outer side of the bidirectional lead screw is in threaded connection with two connecting blocks, and the sides, away from the fixing frame, of the two connecting blocks are each fixedly provided with a pallet fork assembly. The driving motor is started, the driving motor drives the two-way lead screw to rotate, the two-way lead screw can push the two connecting blocks to be close to or away from each other, and therefore the distance between the two pallet fork assemblies can be adjusted according to the siz