SEPARATION DISTANCE ADJUSTMENT MECHANISM, CONVEYANCE DEVICE AND FIXING MECHANISM

摘要

In the present invention, rotating the differential screws (20) of a pair of first interval adjustment devices (2a) makes it possible to finely regulate the interval (h) between a conveyance frame (4) and a pedestal (5) using the pitch difference between a first screw part (201) and a second screw part (202). A second interval adjustment device (3a) is disposed between the pair of first interval adjustment devices (2a). A shaft (31) is slidably held in a cylindrical screw (35) of the second interval adjustment device (3a), and after the completion of a rough interval adjustment by the pair of first interval adjustment devices (2a), the cylindrical screw (35) is caused to rotate and the shaft (31) is secured. During the rough interval adjustment by the first interval adjustment devices (2a), it is possible to prevent an excessive load from being imparted on the second interval adjustment device (3a).