Gap measuring device for the most unfavorable point of elevator landing door

The invention discloses a gap measuring device for the most unfavorable point of an elevator landing door, and belongs to the technical field of elevator detection. The measuring device comprises a lower machine shell, an upper machine shell, a force measuring sensor, a left support, a base, a lead screw, a sliding table, a movable plate and a displacement sensor. The force measuring sensor is fixed in the lower machine shell, the left support is connected with the bottom of the force measuring sensor, the top of the force measuring sensor is connected with the base, the lead screw is rotationally arranged in the lower machine shell and is in threaded connection with the sliding table, the moving plate is fixed to the sliding table, the displacement sensor is arranged in the lower machine shell, and the moving end of the displacement sensor is connected with the sliding table. The problems of errors and unstable measured data caused by unstable force application points of the pull and push dynamometer can be