Modular structure of air conditioning system of rail engineering vehicle

The utility model discloses a modular structure of an air conditioning system of a rail engineering vehicle, which comprises a box body, two partition plates are arranged in the box body at equal intervals, three modular unit mounting grids are arranged in the box body through the two partition plates, mounting seats are movably arranged in the three modular unit mounting grids, and the modular unit mounting grids are arranged in the box body through the two partition plates. Mounting frames are fixedly mounted at the bottoms of the inner sides of the three modular unit mounting grids, a plurality of shaft seats are arranged on the two sides of the top of each mounting frame, a plurality of rolling wheels are movably mounted at the top of each mounting frame through the shaft seats, sliding grooves are formed in the two sides of the bottom of each mounting seat, and sliding blocks are arranged on the sliding grooves. And the mounting frame is movably mounted at the top of the mounting frame through the slidin