Auger assembly and snow thrower

1 . An auger assembly, comprising:

a supporting shaft;

a snow throwing paddle, mounted in a middle of the supporting shaft and assembled to rotate synchronously with the supporting shaft; and

a left snow scraper assembly and a right snow scraper assembly, located on two sides of the snow throwing paddle respectively and symmetrical to each other with respect to a particular plane that is perpendicular to an axis of the supporting shaft,

wherein

the left snow scraper assembly comprises at least two snow scrapers, and each of the at least two snow scrapers is helically spiraled around the supporting shaft along an axial direction of the supporting shaft, and

the each of the at least two snow scrapers is spliced by at least N-section split helical blades, each section of the helical blade comprises a connecting part located at an end that is away from the snow throwing paddle, the connecting part is connected with the supporting shaft, and one of the helical blades closest to the snow throwing paddle is connected with the snow throwing paddle;

each helical blade of the at least two snow scrapers located in a same section in the axial direction of the supporting shaft shares a same connecting part, and two helical blades located in the same section in the axial direction of the supporting shaft form an integrated structure with the same connecting part, the two helical blades and the same connecting part form a single piece of integrally formed component, the left snow scraper assembly includes at least N pieces of the integrally formed components, and the N pieces of the integrally formed components are detachably connected, wherein N is an integer greater than or equal to 2.

2 . The auger assembly according to claim 1 , wherein

a depressed part is formed on the connecting part which is closest to an end of the supporting shaft,

the depressed part is located around the supporting shaft, and

the depressed part is caved toward a direction away from the end of the supporting shaft.

3 . The auger assembly according to claim 1 , wherein

in a projection along the axial direction of the supporting shaft for all the helical blades connecting with the same connecting part, for a specific helical blade, its arc center angle is an angle corresponding to an outermost arc profile related to this specific helical blade, a sum of the arc center angles for all helical blades is greater than or equal to 100° and less than or equal to 360°.

4 . The auger assembly according to claim 1 , wherein

a shape of an area, which is connected with the helical blade that is on the connecting part closest to the end of the supporting shaft, is a planar structure and is perpendicular to the axis of the supporting shaft, and

the shape of the area, which is connected with the helical blade on the other connecting parts, are twisted into a shape consistent with the helical blade.

5 . The auger assembly according to claim 1 , wherein

the snow throwing paddle comprises at least two paddles,

the at least two paddles are cantilevered along a radial direction of the supporting shaft,

a central area on a front side of each of the at least two paddles in a rotation direction is depressed toward a rear side in the rotation direction, the central area is also at an outer side of the each of at least two paddles away from the supporting shaft along a radial direction of the supporting shaft, and

left and right ends on the front side of the each of the at least two paddles in the rotation direction are warped toward the front side in the rotation direction;

a concave direction of the central area is opposite to a warping direction of the left and right ends, and a warping curvature at each of the left and right ends is greater than a concave curvature of the central area, causing an overall surface of the each of at least two paddles shaped as a concave bottom and an upward-sloping sidewalls at the left and right ends of the concave bottom;

the left and right ends of the each of the at least two paddles away from the supporting shaft along the radial direction of the supporting shaft are provided with screw holes for mounting the corresponding helical blades; and

the overall surfaces of the at least two paddles are centrally symmetrical about a center of the supporting shaft.

6 . The auger assembly according to claim 5 , wherein

an inner side of the each of the at least two paddles close to the supporting shaft along the radial direction of the supporting shaft are provided with a connecting arm,

the connecting arm connects the left and right ends on the inner side of the each of the at least two paddles, the connecting arm is a flat plane substantially parallel to a horizontal direction,

a single elongated through hole is arranged on the connecting arm along a length direction of the supporting shaft, a ratio between a length of the elongated through-hole along the length direction and a length of the supporting shaft is greater than or equal to 2; and there is a gap between the overall surface of each paddle and the connecting arm of the each paddle, in order to discharge overloaded snow from the elongated through-hole and from the gap.

7 . The auger assembly according to claim 5 , wherein

the paddle is provided with a rubber plate, and

the rubber plate is detachably connected with the paddle and protrudes from an edge of the paddle along the radial direction of the supporting shaft.

8 . The auger assembly according to claim 5 , wherein

the paddles are formed as an integrated structure,

a shaft hole is arranged between the paddles to enable the supporting shaft to pass through, and

a radial hole is arranged on a side wall of the shaft hole and the supporting shaft, and a positioning bolt is arranged in the radial hole.

9 . The auger assembly according to claim 5 , wherein

a flanged edge is arranged on an edge of the paddle along the radial direction of the supporting shaft away from the supporting shaft, and

the flanged edge protrudes backward in the rotation direction of the paddle.

10 . The auger assembly according to claim 1 , wherein

in the axial direction of the supporting shaft, a ratio between a length of the snow throwing paddle and a length of the left snow scraper assembly is greater than or equal to 0.1 and less than or equal to 2.5.

11 . The auger assembly according to claim 1 , wherein

a ratio between a maximum diameter of a projection of the auger assembly along the axial direction of the supporting shaft and a length of the supporting shaft is greater than or equal to 0.1 and less than or equal to 1.

12 . The auger assembly according to claim 1 , wherein

an outer edge of the snow scraper is provided with a sawtooth cut or a bending flange.

13 . The auger assembly according to claim 1 , wherein adjacent integrally formed components at a joint of the adjacent integrally formed components are provided with holes correspondingly to detachably connect the adjacent integrally formed components together through bolts passing through the holes and the adjacent integrally formed components at the joint share a same connecting part to connect with the supporting shaft.

14 . A snow thrower, comprising:

a main body, provided with a driving device; and

an auger assembly, mounted on a front end of the main body, comprising:

a supporting shaft, connected with the driving device using a transmission mechanism,

a snow throwing paddle, mounted in a middle of the supporting shaft and assembled to rotate synchronously with the supporting shaft, and

a left snow scraper assembly and a right snow scraper assembly, located on two sides of the snow throwing paddle respectively and symmetrical to each other with respect to a particular plane that is perpendicular to an axis of the supporting shaft at a center of the supporting shaft, wherein

the left snow scraper assembly comprises at least two snow scrapers, and each of the at least two snow scrapers is helically spiraled around the supporting shaft along an axial direction of the supporting shaft, and

each of the at least two snow scrapers is spliced by at least N-section split helical blades, each section of the helical blade comprises a connecting part located at an end that is away from the snow throwing paddle, the connecting part is connected with the supporting shaft, and one end of the helical blades closest to the snow throwing paddle that is away from the connecting part is connected with the snow throwing paddle;

each helical blade of the at least two snow scrapers located in a same section in the axial direction of the supporting shaft shares a same connecting part, and two helical blades located in the same section in the axial direction of the supporting shaft form an integrated structure with the same connecting part, the two helical blades and the same connecting part form a single piece of integrally formed component, the left snow scraper assembly includes at least N pieces of the integrally formed components, and the N pieces of the integrally formed components are detachably connected, wherein N is an integer greater than or equal to 2.