Steel structure grid deflection rapid detection device

The invention discloses a steel structure grid deflection rapid detection device, comprising a base plate, wherein supporting legs are mounted at four corners under the base plate. A hollow slot is set close to the lower side of the base plate. A movable plate is mounted at the middle position of the hollow slot. Guide slots are set on left and right side walls of the hollow slot. According to thedevice, a drive motor is connected with the upper side of the base plate; the hollow slot is set close to the lower side of the base plate; the movable plate is connected with an output shaft of thedrive motor in the hollow slot; guide blocks are mounted at two ends of the movable plate; universal wheels are connected with the four corners under the base plate; and guide slots are set at two ends of the hollow slot corresponding to positions of the guide blocks. Various structures match with each other, when the universal wheels move, the universal wheels are extensible, and when the universal wheels do not move, the