(B, ) the utility model discloses a ball valve examines and repair sealed machinery and locks spindle bolt, including mechanical locking lever (1), mechanical locking lever (1) upper end outside is equipped with to throw moves back function nut (2), throws to move back function nut (2) upper end outside and be equipped with setting stick (3), and setting stick (3) one side is equipped with to throw and moves back the function nut and support (5), throws to move back the function nut and support (5) bottom and be equipped with sleeve (6), sleeve (6) are inside to be equipped with spacing ring (7), and sleeve (6) tip is equipped with uide pin (8), machinery locking lever (1) lower extreme lies in sleeve (6) outside. The utility model has the characteristics of easy operation and operating time lack, can reduce intensity of labour, extension mechanical lock spindle bolt life and improve the absorbed rate of accuracy of locking lever etc. (B, )