Fan shape adjustable transmission device of braider for firecrackers

The utility model relates to a transmission device adjustable by the firecracker knotter according to the sector of the machine, which comprises a pair of spur gears whose tooth crest diameters are 93mm and 30mm separately. The big gear is coaxial with the drive wheel; a sector adjusting device is separately arranged at the right and left sides of the drive wheel; a right and left bearing seat is separately arranged on the sector adjusting device, through which can carry out adjustment onto the drive wheel according to the size of firecrackers; the small gear joggled with the big gear is arranged on the main driving axle. The utility model has the advantage of large adjustability, wide applicable scope, high degree of safety, convenient installation, detachment and maintenance, low costs whereas high product quality.