Rapid transmission device for knitter

The invention discloses a rapid transmission device for a knitter. The rapid transmission device comprises an upper plate and a lower plate, wherein a plurality of rotating shafts are vertically embedded in the upper plate; the rotating shafts are circularly distributed and are rotationally connected with the upper plate; dismounting holes are formed in positions, corresponding to the rotating shafts, of the lower plate; a supporting disk which is detachably and fixedly connected with the lower plate is arranged below the dismounting holes; the supporting disk is internally provided with a plurality of limiting tubes; replaceable gears and main gears are sequentially arranged on the limiting tubes; the replaceable gears and the limiting tubes coaxially rotate; the main gears and the replaceable gears coaxially rotate; the main gears are mutually meshed with adjacent main gears; the main gears are connected with the rotating shaft by keys; sliding rods which are fixedly connected with the limiting tubes to ena