Positioning device for producing inner portal frame

The utility model discloses a positioning device for producing an inner portal, which comprises a base, a channel steel positioning part and a top beam positioning part, wherein the channel steel positioning part and the top beam positioning part are positioned on the base; the channel steel positioning part comprises at least one channel steel positioning device and at least two clamping devicesfor clamping the channel steel of the inner portal frame; the clamping devices are located on the two sides of the steel channel positioning device. The channel steel positioning device capable of horizontally moving is arranged, channel steel can be rapidly positioned, the opening width of the inner portal frame and the height of the channel steel can be adjusted so as to adapt to assembling andpositioning work of forklift inner portal frames of different specifications, and the compatibility of a mold is improved; and the inner opening of the channel steel is used as the positioning reference, so that the assembling