Fixture for rapid positioning during replacement of ISRA camera

A clamp for replacing and rapidly positioning an ISRA camera comprises a base, a pressing plate and a laser pen, a through groove is formed in the lower end of the base so as to be clamped at the top end of the ISRA camera, and a first arc-shaped groove matched with the outer surface of the laser pen is formed in the middle of the upper surface of the base in the length direction; a first arc-shaped groove is formed in the upper surface of the base, the laser pen is installed in the first arc-shaped groove and is parallel to the first arc-shaped groove, the laser pen protrudes out of the upper surface of the base, a second arc-shaped groove is formed in the pressing plate, and the second arc-shaped groove of the pressing plate abuts against the laser pen. The pressing plate is connected with the upper surface of the base through a fastener so as to fix the laser pen, and the position of the ISRA camera is adjusted so that laser of the laser pen can point to a target preset point position, and rapid positionin