Secondary air switch signboard suspension device with locking function

The utility model discloses a secondary air switch signboard suspension device with a locking function, which comprises a device main body and a hook, the device main body is E-shaped and is provided with an upper support rod, a middle rod and a lower clamping rod; wherein the hook is used for hanging a safety signboard; the middle rod is matched with the lower clamping rod and is used for clamping an operation handle of the air switch; the upper supporting rod is located on the upper portion of the device body and used for blocking displacement of the air switch handle in the vertical direction, locking the air switch operation handle and preventing misoperation of maintenance personnel. The secondary air switch signboard hanging device with the locking function is exquisite in structural design, high in universality and simple and firm in structure, and has the functions of easily hanging an air switch handle signboard and locking an air switch operation handle; the problem that the air switch signboard is