Single-way replacing robot for battery box of electric commercial vehicle

The utility model relates to a single-way replacing robot for a battery box of an electric commercial vehicle. According to the single-way replacing robot for the battery box of the electric commercial vehicle, the size of the battery replacing robot is effectively reduced, land is saved, meanwhile, the mounting mode of a battery replacing device of an existing battery replacing robot is changed into a hanging mounting mode, and thus the single-way replacing robot for the battery box of the electric commercial vehicle can be matched with an electric bus easily. The single-way replacing robot for the battery box of the electric commercial vehicle comprises a frame assembly, the frame assembly is installed on a walking assembly, a temporary storage rack is arranged on one side of the frame assembly, and a control cabinet is installed on the other side of the frame assembly. A lifting transmission assembly is installed at the top of the frame assembly, and the lifting transmission assembly is connected with a lifting assembly and is further connected with a weight balancing assembly. An object stage assembly capable of rotating on the spot is hung on the lower portion of the lifting assembly, and a pallet fork assembly and a battery pushing hand assembly are arranged at the bottom of the object stage assembly. V-shaped wheel sets matched with rectangular steel stand columns of the battery replacing robot frame are arranged at the four corners of the lifting assembly. An object stage assembly rotation driving device is arranged on the lifting assembly, and a limiting device is arranged on the object stage assembly.