Elevator car bottom structure

The invention relates to an elevator car bottom structure. The elevator car bottom structure comprises a bottom frame and a bottom plate, a plurality of sliding blocks are arranged on the upper side of the bottom frame and can horizontally slide towards the direction of a center shaft of the bottom frame, first upper slopes are arranged on the sides, away from each other, of the sliding blocks, positioning blocks are arranged at the positions, corresponding to the sliding blocks, of the lower surface of the bottom plate, and the sides, close to each other, of the positioning blocks are provided with second slopes in the same inclination direction as the first slopes; lead screws are rotationally connected to the lower sides, corresponding to the sliding blocks, of the bottom frame, the ends, close to each other, of the lead screws are in threaded connection with baffle rings sliding on the bottom frame, the lead screws are sleeved with push springs, and push blocks capable of moving inthe direction close to e