Air-feeding locking device of automatic press-fitting equipment for automobile instrument barometer pointer

The invention belongs to the field of locking devices, and particularly relates to an air-feeding locking device of automatic press-fitting equipment for an automobile instrument barometer pointer. Inorder to solve the problems that the manual efficiency of traditional pressing is low, and the barometer is easy to be damaged due to careless manual work, so that the percent of pass is reduced, a belt wheel is driven to rotate through a motor, and torque is transmitted to a locking assembly through a belt, so that a nut in the locking assembly can be screwed on a ventilation threaded pipe of the automobile instrument pointer, the connection time of an air pipe and the ventilation threaded pipe is greatly shortened by replacing manual screwing with an automatic screwing mode, the connectionaccuracy is greatly improved when the locking device is used for connecting the air pipe and the ventilation threaded pipe, and an air source can directly supply air to an instrument after the air pipe and the ventilation thre