APPARATUS FOR MEASURING INTERVAL BETWEEN ARRANGED POSITIONS OF MOVING BODIES

PURPOSE:To measure the arranging interval between lugs accurately and precisely in a short time by providing a driving device for moving a base bodies at a specified speed in a specified direction, rollers, a displacement sensor, a pulse generating part and a control part. CONSTITUTION:A motor 26 is driven, and a drum 22a is rotated. Thus a track belt 10 is turned. When a roller 33 is in contact with an inner surface 11a of a base body 11 of the belt 10, the detected signal from a displacement sensor 34 is not inputted into a control part 50. When a roller 32 comes into contact with a lug 12-1, the roller 32 is displaced with respect to the inner surface 11a. When a specified amount is exceeded, the detected signal from the sensor 34 is inputted into a control part 50. The roller 32 is slid on the lug 12-1. When the displacement amount becomes less than the specified amount, the detected signal is stopped, and roller 32 comes into contact with a reference surface. When the belt is turned and the roller 32 comes into contact with a lug 12-2, the same operation as before is performed. The control part 50 computes the arranging interval of the lugs based on the counted number of a pulse counter 43 from the previous input time of the detected signal to the input time at this time and a preset pulse period.