Combined type gear capable of reducing noise

The utility model discloses a combined type gear capable of reducing noise. Gear assembly, shaft sleeves are mounted in inner cavities of the gears; button blocks are installed on the two sides of theshaft sleeve. A spring is mounted on one side of the button block; by means of the integrated gear, the problems that an existing gear is integrated, the whole gear needs to be replaced after a peripheral tooth groove of the gear is abraded or a shaft hole of the gear is abraded, the cost is increased, and noise is generated when the two sets of gears are connected in a meshed mode for operationare solved; the shaft sleeve and the gear are installed in a combined mode, the shaft sleeve part and the gear are conveniently separated, no matter which part of the shaft sleeve and the gear is abraded, only the abraded part needs to be replaced, and cost is saved. The sound absorption plates are arranged on the two sides of the gear groove and have the effects of sound absorption and noise reduction, noise generated whe