Portal frame device of multi-layer pallet fork suite and forklift

The utility model relates to the field of forklift hoisting system structures, and discloses a portal frame device of a multi-layer pallet fork suite and a forklift. The portal frame device comprises a portal frame, a plurality of groups of pallet forks and a driving mechanism, a guide rod is arranged on the portal frame, the portal frame is connected with the driving mechanism, the multiple groups of pallet forks are arranged on the guide rod in a sleeving mode through guide sleeves and guide holes arranged in the multiple groups of pallet forks, meanwhile, the driving mechanism is fixedly connected with the pallet fork with the largest sliding displacement in the multiple groups of pallet forks, and therefore the pallet forks are driven to be separated upwards in sequence and move upwards. The portal frame device is simple and practical in structure, the multiple sets of pallet forks can be combined and stacked, the occupied space is reduced, meanwhile, the multiple sets of pallet forks can be separated in