Auger for a snow thrower

A snow thrower, comprising:

• a auger housing formed with an accommodating cavity;
• and
• an auger arranged in the accommodating cavity;
• wherein the auger comprises:
• a supporting shaft having a central axis;
• a snow throwing bracket secured to a middle portion of the supporting shaft and configured to throw snow;
• a left snow scraper surrounding the supporting shaft, secured to a left end of the snow throwing bracket and configured to push snow to the right towards a region where the snow throwing bracket is located;
• a right snow scraper surrounding the supporting shaft, secured to a right end of the snow throwing bracket and configured to push snow to the left towards the region where the snow throwing bracket is located;
• a left supporting plate secured to a left end of the supporting shaft, wherein two ends of the left snow scraper are respectively secured to the snow throwing bracket and the left supporting plate;
• a right supporting plate secured to a right end of the supporting shaft, wherein two ends of the right snow scraper are respectively secured to the snow throwing bracket and the right supporting plate;
• a left auxiliary supporting plate provided separately from the snow throwing bracket to form a first gap between the left auxiliary supporting plate and the snow throwing bracket in a direction of the central axis, wherein the left auxiliary supporting plate is arranged separately from the left supporting plate to form a second gap between the left auxiliary supporting plate and the left supporting plate in the direction of the central axis, and the left auxiliary supporting plate is located between the snow throwing bracket and the left supporting plate;
• and
• a right auxiliary supporting plate provided separately from the snow throwing bracket to form a third gap between the right auxiliary supporting plate and the snow throwing bracket in the direction of the central axis, wherein the right auxiliary supporting plate is arranged separately from the right supporting plate to form a forth gap between the right auxiliary supporting plate and the right supporting plate in the direction of the central axis, and the right auxiliary supporting plate is located between the snow throwing bracket and the right supporting plate,
• wherein the left snow scraper and the right snow scraper are symmetrical about a plane perpendicular to the central axis, an angle of the left snow scraper around the central axis is greater than 180 degrees and smaller than 360 degrees, and a ratio of the angle of the left snow scraper around the central axis to a length of the left snow scraper in a direction of the central axis is greater than or equal to 0.9 degree/mm and less than or equal to 3 degree/mm, and
• wherein the left auxiliary supporting plate is secured to the supporting shaft, a middle portion of the left snow scraper is secured to an end of the left auxiliary supporting plate, the right auxiliary supporting plate is secured to the supporting shaft, and a middle portion of the right snow scraper is secured to an end of the right auxiliary supporting plate.