Inspection device for passenger conveyor

The invention provides an inspection device for a passenger conveyor. The inspection device effectively inspects whether the positions of apron boards arranged on the two sides of a step in a non-contact mode are appropriate or not. The inspection device for the passenger conveyor is capable of measuring mutual assembly positions, and comprises a reference core which is arranged in a frame and is parallel to the advancing direction of the passenger conveyor; the step is used as an inspection clamp and can simulate an actual working state and perform inspection; the reference core sensor is arranged on the step; the distance sensor is arranged on the step and is used for detecting the apron board distance from the side surface of the step to the apron board; and a control unit that calculates the position of the apron panel with respect to the reference core using the output signals of the reference core sensor and the distance sensor. The control unit associates the position of the reference point in the meas