Non-contact flatness detection device

The utility model discloses a non-contact flatness detection device, and relates to the technical field of detection equipment. The device comprises a box body, a lifting mechanism is installed on theinner wall of the lower side of the box body and close to the edge of the left side through a first bearing seat, a laser detector is installed on the upper surface of a third connecting rod throughan installation mechanism, a motor is fixedly installed on the inner wall of the lower side of the box body, and an output shaft of the motor is in transmission connection with the first connecting rod through a bevel gear; a platform is arranged on the upper surface of the box body, a clamping mechanism is arranged in the platform, and the clamping mechanism comprises a rectangular opening, a second bearing seat, a lead screw, a ball nut and a T-shaped clamping block. Manual detection is omitted through the laser detector, meanwhile, the horizontal rotation function of the laser detector is added, the detection area i