Universal subway PIS screen body hanging box convenient to maintain

The utility model discloses a universal subway PIS screen body hanging box convenient to maintain, which comprises a hanging box body, a split box door arranged on the front side face of the hanging box body, two through holes arranged on the lower end face of the hanging box, a first longitudinal slide rail and a second longitudinal slide rail symmetrically arranged on the inner side wall of an inner cavity of the hanging box body, a cross beam and a lifting hydraulic cylinder, the first sliding block and the second sliding block are installed at the two ends of the cross beam respectively, the first sliding block is arranged in the first longitudinal sliding rail in a sliding mode, the second sliding rail is arranged in the second longitudinal sliding rail in a sliding mode, the upper end of the lifting hydraulic cylinder is fixed to the inner top wall of the hanging box body, and the telescopic end of the lifting hydraulic cylinder is connected with the middle of the upper end face of the cross beam. The s