SNOW THROWER

Abstract

A snow thrower includes walking wheels, a snow sweeping assembly, and a snow intake housing; where the walking wheels support the snow thrower in walking on the ground; the snow sweeping assembly includes a rotating shaft and an auger disposed on the rotating shaft, where the rotating shaft is configured to rotate about a first axis; and the snow intake housing accommodates at least part of the snow sweeping assembly. The snow intake housing has a front opening portion for snow intake, and the distance L1 between a projection of a highest point of the front opening portion on a first plane and a projection of the first axis on the first plane is less than or equal to 20 mm, where the first plane is substantially parallel to the horizontal plane.

Claims

1. A snow thrower, comprising: walking wheels for walking on the ground; a snow sweeping assembly comprising a rotating shaft configured to rotate about a first axis and an auger disposed on the rotating shaft; and a snow intake housing accommodating at least part of the snow sweeping assembly having a front opening portion for snow intake where a distance L1 between a projection of a highest point of the front opening portion on a substantially horizontal first plane and a projection of the first axis on the first plane is less than or equal to 20 mm.

2. The snow thrower according to claim 1, wherein the front opening portion comprises an inclined portion, and an angle between the inclined portion and the first plane is greater than or equal to 30 and less than or equal to 90.

3. The snow thrower according to claim 1, wherein the front opening portion comprises an inclined portion, a length L2 of a projection of the inclined portion on the first plane is greater than or equal to 0 and less than or equal to 0.5D, and D denotes a diameter of the auger.

4. The snow thrower according to claim 1, further comprising at least one battery pack configured to supply power to a first electric motor that drives the snow sweeping assembly to operate.

5. The snow thrower according to claim 1, further comprising a discharge chute operable to rotate to change a snow discharge direction, wherein a height difference L3 between a lower edge of the discharge chute and an upper edge of the snow intake housing is less than or equal to 50 mm.

6. The snow thrower according to claim 5, wherein a ratio of the height difference L3 to a total height L4 of the discharge chute is less than or equal to 0.2.

7. The snow thrower according to claim 5, wherein the snow intake housing further has a rear side surface, and a minimum distance L5 between the discharge chute and the rear side surface is greater than or equal to 30 mm and less than or equal to 80 mm.

8. The snow thrower according to claim 5, further comprising a second electric motor and a snow throwing member, wherein the second electric motor is configured to drive the snow throwing member to rotate to throw snow from the auger towards the discharge chute.

9. The snow thrower according to claim 1, wherein the projection of the highest point of the front opening portion on the first plane is located in front of the projection of the first axis on the first plane.

10. The snow thrower according to claim 1, wherein the projection of the highest point of the front opening portion on the first plane is located behind the projection of the first axis on the first plane.

11. The snow thrower according to claim 1, wherein the projection of the highest point of the front opening portion on the first plane overlaps the projection of the first axis on the first plane.

12. The snow thrower according to claim 1, wherein the snow intake housing has the front opening portion for snow intake and a ratio of a minimum distance L6 between a projection of a rear edge of the auger on the first plane and the projection of the highest point of the front opening portion on the first plane to a diameter D of the auger is less than or equal to 0.65.

13. The snow thrower according to claim 1, further comprising skid shoes disposed on the snow intake housing, wherein, along a front and rear direction, a ratio of a width W1 of the skid shoes to a width W2 of the snow intake housing is greater than or equal to 0.6 and less than or equal to 1.

14. The snow thrower according to claim 1, further comprising a first electric motor powered by a battery pack and configured to drive the rotating shaft to rotate so as to drive the auger to rotate.

15. The snow thrower according to claim 14, further comprising a discharge chute, a second electric motor, and a snow throwing member, wherein the discharge chute is operable to rotate to change a snow discharge direction, and the second electric motor is configured to drive the snow throwing member to rotate to throw snow from the auger towards the discharge chute.

16. A snow thrower, comprising: walking wheels for walking on the ground; a snow sweeping assembly comprising a rotating shaft configured to rotate about a first axis and an auger disposed on the rotating shaft; a first electric motor powered by a battery pack and configured to drive the rotating shaft to rotate to drive the auger to rotate; and a snow intake housing accommodating at least part of the snow sweeping assembly having a front opening portion for snow intake where a ratio of a minimum distance L6 between a projection of a rear edge of the auger on a substantially horizontal first plane and a projection of a highest point of the front opening portion on the first plane to a diameter D of the auger is less than or equal to 0.65.

17. The snow thrower according to claim 16, wherein the front opening portion comprises an inclined portion, and an angle between the inclined portion and the first plane is greater than or equal to 30 and less than or equal to 90.

18. A snow thrower, comprising: walking wheels for walking on the ground; a snow sweeping assembly comprising a rotating shaft configured to rotate about a first axis and an auger disposed on the rotating shaft; and a snow intake housing accommodating at least part of the snow sweeping assembly having a front opening portion for snow intake where a projection of a highest point of the front opening portion on a first plane overlaps a projection of the first axis on the first plane or the projection of the highest point of the front opening portion on the first plane is located behind the projection of the first axis on the first plane.

19. The snow thrower according to claim 18, wherein the front opening portion comprises an inclined portion, and an angle between the inclined portion and the first plane is greater than or equal to 30 and less than or equal to 90.

20. The snow thrower according to claim 18, wherein the front opening portion comprises an inclined portion, a length L2 of a projection of the inclined portion on the first plane is greater than or equal to 0 and less than or equal to 0.5D, and D denotes a diameter of the auger.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG. 1 is a structural view of a snow thrower of the present application.

[0034] FIG. 2 is a front view of a snow thrower of the present application.

[0035] FIG. 3 is a side view of part of the structure of a snow thrower of the present application.

[0036] FIG. 4 is a sectional view of FIG. 3 taken along A-A.

[0037] FIG. 5 is a front view one of part of the structure of a snow thrower of the present application.

[0038] FIG. 6 is a front view two of part of the structure of a snow thrower of the present application.

[0039] FIG. 7 is an exploded view of a support, a skid shoe, and locking members of a snow thrower of the present application.

[0040] FIG. 8 is a schematic view illustrating that a support, a skid shoe, and locking members of a snow thrower of the present application mate with each other.

[0041] FIG. 9 is a structural view one of a skid shoe of a snow thrower of the present application.

[0042] FIG. 10 is a structural view two of a skid shoe of a snow thrower of the present application.

[0043] FIG. 11 is a structural view of an auger blade of the present application.

DETAILED DESCRIPTION

[0044] Before any examples of this application are explained in detail, it is to be understood that this application is not limited to its application to the structural details and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0045] In this application, the terms comprising, including, having or any other variation thereof are intended to cover an inclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those series of elements, but also other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase comprising a . . . does not preclude the presence of additional identical elements in the process, method, article, or device comprising that element.

[0046] In this application, the term and/or is a kind of association relationship describing the relationship between associated objects, which means that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character / in this application generally indicates that the contextual associated objects belong to an and/or relationship.

[0047] In this application, the terms connection, combination, coupling and installation may be direct connection, combination, coupling or installation, and may also be indirect connection, combination, coupling or installation. Among them, for example, direct connection means that two members or assemblies are connected together without intermediaries, and indirect connection means that two members or assemblies are respectively connected with at least one intermediate members and the two members or assemblies are connected by the at least one intermediate members. In addition, connection and coupling are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0048] In this application, it is to be understood by those skilled in the art that a relative term (such as about, approximately, and substantially) used in conjunction with quantity or condition includes a stated value and has a meaning dictated by the context. For example, the relative term includes at least a degree of error associated with the measurement of a particular value, a tolerance caused by manufacturing, assembly, and use associated with the particular value, and the like. Such relative term should also be considered as disclosing the range defined by the absolute values of the two endpoints. The relative term may refer to plus or minus of a certain percentage (such as 1%, 5%, 10%, or more) of an indicated value. A value that did not use the relative term should also be disclosed as a particular value with a tolerance. In addition, substantially when expressing a relative angular position relationship (for example, substantially parallel, substantially perpendicular), may refer to adding or subtracting a certain degree (such as 1 degree, 5 degrees, 10 degrees or more) to the indicated angle.

[0049] In this application, those skilled in the art will understand that a function performed by an assembly may be performed by one assembly, multiple assemblies, one member, or multiple members. Likewise, a function performed by a member may be performed by one member, an assembly, or a combination of members.

[0050] In this application, the terms up, down, left, right, front, and rear and other directional words are described based on the orientation or positional relationship shown in the drawings, and should not be understood as limitations to the examples of this application. In addition, in this context, it also needs to be understood that when it is mentioned that an element is connected above or under another element, it can not only be directly connected above or under the other element, but can also be indirectly connected above or under the other element through an intermediate element. It should also be understood that orientation words such as upper side, lower side, left side, right side, front side, and rear side do not only represent perfect orientations, but can also be understood as lateral orientations. For example, lower side may include directly below, bottom left, bottom right, front bottom, and rear bottom.

[0051] Referring to FIGS. 1 to 5, the present application provides a snow thrower. For convenience of description, the directions of front, rear, up, down, left, and right shown in FIG. 1 are set according to a traveling direction of the snow thrower under general operating conditions. The snow thrower includes a body 110 and an operating assembly 120. Walking wheels 130 configured to support the snow thrower in walking on a horizontal plane are provided on the left and right sides of the body 110. The horizontal plane is also the ground for the snow thrower to walk on. The operating assembly 120 is disposed on the rear side of the body 110 and connected to the body 110. The operating assembly 120 includes connecting rods and a handle, the connecting rods are configured to connect the handle to the body 110, and the handle is used for a user to operate.

[0052] The snow thrower further includes a snow clearing system, a power system, a transmission system, and an energy system. The transmission system is configured to transmit kinetic energy from the power system to the snow clearing system. The energy system is configured to supply energy to the power system.

[0053] The snow clearing system includes a snow sweeping assembly 140 and a snow intake housing 150. The snow sweeping assembly 140 includes a rotating shaft 141 and an auger 142 disposed on the rotating shaft 141, where the rotating shaft 141 is configured to rotate about a first axis 1411. The snow intake housing 150 accommodates at least part of the snow sweeping assembly 140. The snow intake housing 150 has a front opening portion 151 for snow intake. It is to be understood that the front opening portion 151 is opened at the front end of the snow intake housing 150.

[0054] The snow intake housing 150 is formed with a first accommodation space 152 and a second accommodation space communicating with the first accommodation space 152, the rotating shaft 141 and at least part of the auger 142 are located in the first accommodation space 152, the first accommodation space 152 is recessed from front to back, the second accommodation space is located at the rear end of the first accommodation space 152, and the front opening portion 151 is a snow inlet at the front end of the first accommodation space 152.

[0055] Specifically, the snow intake housing 150 includes a top plate 153, a back plate 154, and side plates 155 on the left and right sides of the back plate 154, where the top plate 153, the back plate 154, and the side plates 155 surround the first accommodation space 152. Two ends of the rotating shaft 141 are connected to the side plates 155. The back plate 154 has an arc-shaped portion for accommodating the auger 142. The first accommodation space 152 has a top wall, a rear wall, and sidewalls. For example, the top wall is a horizontal surface or a stepped surface, at least part of the rear wall is a plane surface, at least part of the rear wall is a curved surface, and the sidewalls are vertical surfaces.

[0056] In some examples, the snow intake housing 150 has an integrally formed structure, and the front opening portion 151 faces forward. The wall thickness of the snow intake housing 150 is greater than or equal to 1.2 mm and less than or equal to 3 mm. In some examples, the snow intake housing 150 is formed by connecting multiple independently formed plates. The wall thickness of a side plate 155 is greater than the wall thickness of the back plate 154, the wall thickness of the side plate 155 is greater than or equal to 1.5 mm and less than or equal to 2 mm, and the wall thickness of the back plate 154 is greater than or equal to 1.2 mm and less than or equal to 1.8 mm. In some examples, the snow intake housing 150 is a metal structure. In some examples, the snow intake housing 150 is made of a non-metal material. In some examples, the snow intake housing 150 is made of a metal material and a non-metal material.

[0057] As described above, the snow intake housing 150 includes the back plate 154 and the side plates 155 on the left and right sides of the back plate 154. The side plate 155 forms a first projection on a second plane 102, the snow sweeping assembly 140 forms a second projection on the second plane 102, and the ratio of the area S1 of the first projection to the area S2 of an overlap between the first projection and the second projection is greater than or equal to 1 and less than or equal to 1.6, where the second plane 102 is substantially perpendicular to the first axis 1411.

[0058] In some examples, the ratio of the area S1 of the first projection to the area S2 of the overlap between the first projection and the second projection is greater than or equal to 1.2 and less than or equal to 1.5. In some examples, the ratio of the area S1 of the first projection to the area S2 of the overlap between the first projection and the second projection is equal to 1, 1.1, 1.26, 1.36, 1.4, or 1.5.

[0059] A height difference between the center of gravity of the snow intake housing 150 and the first axis 1411 in an up and down direction is greater than or equal to 90 mm and less than or equal to 110 mm, ensuring a stable center of gravity. In some examples, the height difference between the center of gravity of the snow intake housing 150 and the first axis 1411 in the up and down direction is greater than or equal to 95 mm and less than or equal to 105 mm. In some examples, the height difference between the center of gravity of the snow intake housing 150 and the first axis 1411 in the up and down direction is equal to 90 mm, 92 mm, 95 mm, 98 mm, 100 mm, 102 mm, 105 mm, 108 mm, or 110 mm.

[0060] The distance between a projection of the center of gravity of the snow intake housing 150 on a first plane 101 and a projection of the first axis 1411 on the first plane 101 is greater than or equal to 10 mm and less than or equal to 20 mm, where the first plane 101 is substantially parallel to the horizontal plane. Thus, the center of gravity is relatively close to the first axis 1411 to ensure stability. In some examples, the distance between the projection of the center of gravity of the snow intake housing 150 on the first plane 101 and the projection of the first axis 1411 on the first plane 101 is greater than or equal to 12 mm and less than or equal to 18 mm. In some examples, the distance between the projection of the center of gravity of the snow intake housing 150 on the first plane 101 and the projection of the first axis 1411 on the first plane 101 is equal to 12 mm, 13 mm, 14 mm, 15 mm, 15.5 mm, 16 mm, 18 mm, or 20 mm.

[0061] Referring to FIG. 4, the distance L1 between a projection of a highest point 1511 of the front opening portion 151 on the first plane 101 and the projection of the first axis 1411 on the first plane 101 is less than or equal to 20 mm, where the first plane 101 is substantially parallel to the horizontal plane. That is, the highest point 1511 of the front opening portion 151 is relatively close to the first axis 1411 along a front and rear direction, and the highest point 1511 of the front opening portion 151 is relatively backward so that the highest point 1511 of the front opening portion 151 is prevented from being in contact with snow, the resistance in an advancing process is reduced, and the snow can be prevented from accumulating at the top of the snow intake housing 150. For example, the distance L1 between the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 and the projection of the first axis 1411 on the first plane 101 is equal to 20 mm, 18 mm, 15 mm, 12 mm, 10 mm, 8 mm, 5 mm, 3 mm, or 0 mm.

[0062] In some examples, the distance L1 between the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 and the projection of the first axis 1411 on the first plane 101 is greater than 0 mm and less than or equal to 20 mm. The projection of the highest point 1511 of the front opening portion 151 on the first plane 101 is located in front of or behind the projection of the first axis 1411 on the first plane 101.

[0063] In some examples, the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 overlaps the projection of the first axis 1411 on the first plane 101. That is, the distance L1 between the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 and the projection of the first axis 1411 on the first plane 101 is equal to 0 mm, that is, the highest point 1511 of the front opening portion 151 is located directly above the first axis 1411.

[0064] Referring to FIG. 5, the front opening portion 151 includes an inclined portion 1512, and the angle between the inclined portion 1512 and the first plane 101 is greater than or equal to 30 and less than or equal to 90. In some examples, the front opening portion 151 includes the inclined portion 1512, and the angle between the inclined portion 1512 and the first plane 101 is greater than or equal to 45 and less than or equal to 60. In some examples, the front opening portion 151 includes the inclined portion 1512, and the angle between the inclined portion 1512 and the first plane 101 is equal to 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, or 90.

[0065] The inclined portion 1512 is located at the upper end of the front opening portion 151 and extends upward obliquely from front to back. The inclined portion 1512 is disposed so that the top of the front opening portion 151 is further backward, the highest point 1511 of the front opening portion 151 is further prevented from being in contact with snow, and the resistance in the advancing process is reduced. The length L2 of a projection of the inclined portion 1512 on the first plane 101 is greater than or equal to 0 and less than or equal to 0.5D, where D denotes the diameter of the auger 142, so that the inclined portion 1512 occupies a relatively small space in the front and rear direction. In some examples, the length L2 of the projection of the inclined portion 1512 on the first plane 101 is greater than or equal to 0 and less than or equal to 0.2D. For example, the diameter D of the auger 142 is greater than or equal to 220 mm and less than or equal to 450 mm.

[0066] The snow thrower further includes a snow throwing assembly including a discharge chute 160 and a snow throwing member. The discharge chute 160 is disposed behind the snow intake housing 150 and is operable to rotate to change a snow discharge direction. At least part of the snow throwing member is disposed in the snow intake housing 150, and the snow throwing member rotates about a second axis to throw snow from the auger 142 towards the discharge chute 160. Specifically, at least part of the snow throwing member is disposed in the second accommodation space of the snow intake housing 150. The snow throwing member may adopt an existing structure, which is not described in detail here.

[0067] The energy system includes a battery pack, where a single battery pack or multiple battery packs may be used. The power system includes an electric motor, and the battery pack is configured to supply power to the electric motor. In some examples, the snow thrower is a two-stage snow thrower, and the auger 142 and the snow throwing member are driven separately. In some examples, the snow thrower is a single-stage snow thrower, and the auger 142 and the snow throwing member share one electric motor.

[0068] The snow thrower further includes at least one battery pack, and the battery pack is configured to supply power to a first electric motor that drives the snow sweeping assembly 140 to operate. Specifically, the first electric motor is powered by the battery pack and configured to drive the rotating shaft 141 to rotate to drive the auger 142 to rotate. The snow thrower further includes a second electric motor configured to drive the snow throwing member to rotate. The first electric motor and the second electric motor may share one battery pack. Alternatively, the first electric motor may correspond to one battery pack and the second electric motor may correspond to another battery pack.

[0069] The snow throwing assembly further includes a discharge housing, the bottom of the discharge chute 160 is connected to the discharge housing, the discharge housing communicates with the snow intake housing 150, and at least part of the snow throwing member is disposed in the discharge housing.

[0070] Referring to FIG. 2, a height difference L3 between the lower edge of the discharge chute 160 and the upper edge of the snow intake housing 150 is less than or equal to 50 mm so that the snow intake housing 150 is prevented from hindering the discharge of snow out of the discharge chute 160. In some examples, the height difference L3 between the lower edge of the discharge chute 160 and the upper edge of the snow intake housing 150 is less than or equal to 30 mm. In some examples, the height difference L3 between the lower edge of the discharge chute 160 and the upper edge of the snow intake housing 150 is equal to 50 mm, 40 mm, 30 mm, 20 mm, 10 mm, or 0 mm.

[0071] The ratio of the height difference L3 between the lower edge of the discharge chute 160 and the upper edge of the snow intake housing 150 to a total height L4 of the discharge chute 160 is less than or equal to 0.2 so that the snow intake housing 150 is prevented from hindering the discharge of snow out of the discharge chute 160.

[0072] The snow intake housing 150 further has a rear side surface 156, that is, a rear surface of the back plate 154. A minimum distance L5 between the discharge chute 160 and the rear side surface 156 is greater than or equal to 30 mm and less than or equal to 80 mm. In some examples, the minimum distance L5 between the discharge chute 160 and the rear side surface 156 is greater than or equal to 50 mm and less than or equal to 60 mm. In some examples, the minimum distance L5 between the discharge chute 160 and the rear side surface 156 is equal to 55 mm.

[0073] The auger 142 includes multiple auger blades 1421, and the distance between a farthest point of an auger blade 1421 from the first axis 1411 and the first axis 1411 is the radius of the auger 142. In some examples, the auger blade 1421 extends substantially along a helical surface. In some examples, the auger blade 1421 extends substantially helically along a plane surface.

[0074] The auger blade 1421 includes a blade body 14211 and multiple snow clearing teeth 14212, where the snow clearing teeth 14212 are disposed on a side of the blade body 14211 facing away from the first axis 1411. A snow clearing tooth 14212 and the blade body 14211 may be arranged on the same plane. Alternatively, referring to FIG. 11, an angle may be formed between the snow clearing tooth 14212 and the blade body 14211, where the angle is greater than or equal to 30 and less than or equal to 45. In some examples, the angle is equal to 30, 35, 40, or 45. The angle is formed so that the snow clearing teeth 14212 direct snow. During rotation of the auger blade 1421, the snow clearing teeth 14212 direct the snow to move towards the inside of the snow intake housing 150.

[0075] In some examples, the ratio of a minimum distance L6 between a projection of a rear edge of the auger 142 on the first plane 101 and the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 to the diameter D of the auger 142 is less than or equal to 0.65, where the first plane 101 is substantially parallel to the horizontal plane. The auger 142 is not uniformly distributed about the first axis 1411. Therefore, the minimum distance L6 exists between the projection of the rear edge of the auger 142 on the first plane 101 and the projection of the highest point 1511 of the front opening portion 151 on the first plane 101. It is to be understood that the rear edge of the auger 142 is located behind the highest point 1511 of the front opening portion 151 along the front and rear direction.

[0076] As shown in FIG. 4, the ratio of the minimum distance L6 to the diameter D of the auger 142 is less than or equal to 0.65. That is, along the front and rear direction, the highest point 1511 of the front opening portion 151 is moved backward as much as possible, and the top of the front opening portion 151 is further backward so that the highest point 1511 of the front opening portion 151 is further prevented from being in contact with snow, and the resistance in the advancing process is reduced.

[0077] In some examples, the ratio of the minimum distance L6 between the projection of the rear edge of the auger 142 on the first plane 101 and the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 to the diameter D of the auger 142 is less than or equal to 0.6.

[0078] A difference between the diameter D of the auger 142 and the minimum distance L6 is greater than or equal to 20 mm. In some examples, the difference between the diameter D of the auger 142 and the minimum distance L6 is greater than or equal to 30 mm. In some examples, the difference between the diameter D of the auger 142 and the minimum distance L6 is equal to 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, or 50 mm. In some examples, the distance L6 between the projection of the rear edge of the auger 142 on the first plane 101 and the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 is greater than or equal to 100 mm and less than or equal to 300 mm, and the diameter D of the auger 142 is greater than or equal to 220 mm and less than or equal to 450 mm, where the first plane 101 is substantially parallel to the horizontal plane. In some examples, the distance L6 between the projection of the rear edge of the auger 142 on the first plane 101 and the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 is greater than or equal to 150 mm and less than or equal to 250 mm. In some examples, the distance L6 between the projection of the rear edge of the auger 142 on the first plane 101 and the projection of the highest point 1511 of the front opening portion 151 on the first plane 101 is equal to 100 mm, 120 mm, 150 mm, 180 mm, 200 mm, 220 mm, 250 mm, 280 mm, or 300 mm.

[0079] Referring to FIGS. 1 to 10, the snow thrower further includes skid shoes 170 disposed on the snow intake housing 150. In the advancing process, the skid shoes 170 rub against the snow to reduce advancing resistance. Generally, two skid shoes 170 are disposed on the left and right sides of the snow intake housing 150, and the position of a skid shoe 170 can be adjusted along the up and down direction. During adjustment, the skid shoe 170 may be twisted, and one of the front and the rear may be higher or lower than the other. In this example, at least two skid shoes 170 are spaced apart on the rear side of the snow intake housing 150 to reduce the advancing resistance of the snow intake housing 150 and prevent the snow intake housing 150 from tilting on the snow.

[0080] As shown in FIG. 5, along the front and rear direction, the ratio of the width W1 of the skid shoes 170 to the width W2 of the snow intake housing 150 is greater than or equal to 0.6 and less than or equal to 1. In some examples, along the front and rear direction, the ratio of the width W1 of the skid shoes 170 to the width W2 of the snow intake housing 150 is greater than or equal to 0.7 and less than or equal to 0.9. In some examples, along the front and rear direction, the ratio of the width W1 of the skid shoes 170 to the width W2 of the snow intake housing 150 is equal to 0.6, 0.7, 0.8, 0.9, or 1.

[0081] In this example, two skid shoes 170 are provided. Along a left and right direction, an interval between the two skid shoes 170 is n, the width of the snow intake housing 150 is m, and n is greater than or equal to 0.6m and less than or equal to m. Thus, the two skid shoes 170 have a relatively large interval and can provide stable support for the snow intake housing 150 so that the snow intake housing 150 is kept balanced.

[0082] Due to a relatively small space on the rear side of the snow intake housing 150, the position adjustment of the skid shoe 170 is limited. In this example, the position of the skid shoe 170 can be adjusted along a direction of a first straight line 103, where the angle between the first straight line 103 and the horizontal plane is greater than or equal to 30 and less than or equal to 60 to make full use of the space. In some examples, the angle between the first straight line 103 and the horizontal plane is equal to 30, 35, 40, 45, 50, 55, or 60. Referring to FIGS. 5 to 7, supports 180 are provided on the snow intake housing 150, one of a support 180 and the skid shoe 170 is provided with an elongated hole 171, the other of the support 180 and the skid shoe 170 is provided with locking holes 181, the elongated hole 171 extends along the direction of the first straight line 103, the skid shoe 170 is detachably connected to the support 180 through locking members 190, and the locking members 190 penetrate through the locking holes 181 and the elongated hole 171.

[0083] In this example, the skid shoe 170 is provided with the elongated hole 171, and the support 180 is provided with the locking holes 181. The locking members 190 may each be a bolt and nut mating structure, or the locking holes 181 may be threaded holes and the locking members 190 may be bolts. The skid shoe 170 can be adjusted upward or downward obliquely along the direction of the elongated hole 171. Referring to FIG. 5, the skid shoe 170 is located at a lowest position, and one locking member 190 abuts against a lowest end of the elongated hole 171. Referring to FIG. 6, the skid shoe 170 is located at a highest position, and the other locking member 190 abuts against a highest end of the elongated hole 171.

[0084] Further, the skid shoe 170 is provided with a first inclined surface 172, the support 180 is provided with a second inclined surface 182, the first inclined surface 172 abuts against the second inclined surface 182, and the first inclined surface 172 and the second inclined surface 182 both extend parallel to the first straight line 103. The first inclined surface 172 mates with the second inclined surface 182 to achieve limiting and guide effects. When the position of the skid shoe 170 is adjusted, the skid shoe 170 slides along the second inclined surface 182 to ensure that the skid shoe 170 is always displaced along the first straight line 103.

[0085] In this example, the angle between the first straight line 103 and the horizontal plane is equal to 45, the skid shoe 170 is in the shape of an isosceles right triangle, the skid shoe 170 further includes a first support surface 173 and a second support surface 174, the first support surface 173 is perpendicular to the second support surface 174, the angle between the first support surface 173 and the first inclined surface 172 is equal to 45, and the angle between the second support surface 174 and the first inclined surface 172 is equal to 45. During use, after the first support surface 173 is worn, the second support surface 174 may be in contact with the snow, thereby using two surfaces and improving a service life.

[0086] Specifically, after the first support surface 173 is worn, the skid shoe 170 may be rotated and/or flipped so that the second support surface 174 is in contact with the snow. Alternatively, the two skid shoes 170 may be interchanged in position, and the skid shoe 170 may be rotated and/or flipped so that the second support surface 174 is in contact with the snow.

[0087] The basic principles, main features, and advantages of this application are shown and described above. It is to be understood by those skilled in the art that the aforementioned examples do not limit the present application in any form, and all technical solutions obtained through equivalent substitutions or equivalent transformations fall within the scope of the present application.