Universal shaft locking device

The utility model relates to the technical field of rolling production lines, in particular to a universal shaft locking device. The device comprises a locking mechanism, wherein bosses capable of being elastically pressed are arranged on the two sides of the locking mechanism; the connecting rod mechanism comprises a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are crossed and movably connected; and the operating mechanism comprises an operating rod, a first limiting part and a second limiting part, and the first moving part can be movably arranged on the operating rod in the direction facing or deviating from the second moving part so that the first pressing part and the second pressing part can press or be separated from the bosses on the same side. According to the universal shaft locking device, the boss is pressed or popped out through movement of the connecting rod mechanism, the situation that a hydraulic cylinder is clamped in the relate