Device capable of being adjusted, contracted and conveniently moved for building fire-fighting emergency fire-fighting cabinet

The invention provides an adjustable and retractable device convenient to move for a building fire-fighting emergency fire-fighting cabinet, and relates to the technical field of fire-fighting cabinets. The device comprises a box body, fixing plates are fixedly connected to the two sides of the bottom of the box body, rotating shafts are rotatably connected to the interiors of the fixing plates, rolling wheels are fixedly connected to the two ends of each rotating shaft, a loading box is arranged in the box body, one end of a connecting rod is fixedly connected with an upper gear, and the other end of the connecting rod is fixedly connected with a lower gear. The bottom of the upper gear is connected with a lower gear in a meshed mode, supporting plates are arranged on the two sides of the upper gear and the two sides of the lower gear, positioning shafts are fixedly connected between the two sides of the two supporting plates, and one ends of the positioning shafts are fixedly connected with a mounting plate