Snow sweeper

Abstract

The utility model provides a snow sweeper. The snow sweeper comprises a machine shell, a handle assembly, a snow shoveling auger and a driving motor. The handle assembly is fixed to the rear side of the machine shell, the snow shoveling auger is arranged on the inner side of the front portion of the machine shell, the driving motor is fixed in the machine shell, the two ends of a transmission shaft located in the snow shoveling auger are rotationally connected with the machine shell through bearing assemblies, and one end of the transmission shaft is in transmission connection with the driving motor. A square sinking groove is formed in one end of the snow shoveling auger, a transmission plate matched with the sinking groove in shape is fixed in the sinking groove, a shaft hole is formed in the middle of the transmission plate, the transmission shaft penetrates through the shaft hole, and a plurality of first limiting planes are arranged on the outer wall of the transmission shaft in the circumferential direction. Each first limiting plane is tightly attached to the hole wall of the shaft hole so that the transmission shaft and the transmission plate can be limited in the circumferential direction. According to the utility model, slipping between the snow shoveling auger and the transmission shaft can be effectively avoided, that is, the reliability of the transmission shaft driving the snow shoveling auger to rotate can be ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of snow removal devices, and more specifically, to a snow sweeper. Background Technology

[0002] Snowplows are devices used to clear snow from roads. Currently, most snowplows on the market consist of a housing, a handle assembly, a snow auger, and a drive motor. The handle assembly is fixed to the rear of the housing, the snow auger is located inside the front of the housing, and the drive motor is fixed inside the housing. Both ends of the drive shaft within the snow auger are rotatably connected to the housing via bearing assemblies, and one end of the drive shaft is connected to the drive motor. When the snowplow is in operation, the drive motor rotates the drive shaft, which in turn rotates the snow auger to clear snow from the ground. However, in actual use, when the snow auger is under significant load while clearing snow, slippage can easily occur between the snow auger and the drive shaft. This affects the reliability of the drive shaft in rotating the snow auger, and consequently, the reliability of the snow auger in clearing snow. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a snow sweeper that can effectively avoid slippage between the snow auger and the drive shaft, that is, to ensure the reliability of the drive shaft in driving the snow auger to rotate.

[0004] This utility model provides a snowplow, including a housing, a handle assembly, a snow shovel auger, and a drive motor. The handle assembly is fixed to the rear side of the housing, the snow shovel auger is located on the inner side of the front of the housing, and the drive motor is fixed inside the housing. Both ends of the drive shaft located in the snow shovel auger are rotatably connected to the housing through bearing assemblies, and one end of the drive shaft is connected to the drive motor. One end of the snow shovel auger is provided with a square-shaped groove, and a transmission plate that matches the shape of the groove is fixed in the groove. A shaft hole is provided in the middle of the transmission plate, and the drive shaft passes through the shaft hole. Multiple first limiting planes are provided circumferentially on the outer wall of the drive shaft, and each first limiting plane is in close contact with the hole wall of the shaft hole to limit the circumferential movement of the drive shaft and the transmission plate.

[0005] By adopting the above-mentioned structure, this utility model can effectively prevent slippage between the snow auger and the drive shaft under the circumferential limiting action of the transmission plate and the trough, as well as the circumferential limiting action of the drive shaft and the transmission plate. This ensures the reliability of the drive shaft in driving the snow auger to rotate, thus ensuring that the snow auger can reliably remove snow.

[0006] In one possible implementation, a transmission cavity is provided on one side of the housing, and an end cover for sealing the transmission cavity is fixed on the housing. One end of the transmission shaft extends into the transmission cavity and is coaxially fixed to a large pulley. A small pulley is coaxially fixed to the output shaft of the drive motor. The large pulley is connected to the small pulley via a multi-wedge belt. A tensioning assembly is also connected in the transmission cavity. The tensioning assembly is used to apply a compressive force to one side of the multi-wedge belt to increase the contact area between the multi-wedge belt and the small pulley. With this structure, under the action of the tensioning assembly, the tensioning assembly can apply a compressive force to one side of the multi-wedge belt to increase the contact area between the multi-wedge belt and the small pulley. Thus, when the drive motor drives the transmission shaft and the snow shovel auger to rotate via the small pulley, the multi-wedge belt, and the large pulley, slippage between the multi-wedge belt and the small pulley can be effectively avoided, that is, the drive motor can reliably drive the snow shovel auger to rotate.

[0007] In one possible implementation, the tensioning assembly includes a support shaft and multiple bearings coaxially sleeved on the support shaft. The inner end of the support shaft is fitted into the housing of the drive motor, and the multiple bearings are in close contact with the outer wall of one side of the multi-wedge belt, applying a compressive force to that side. With this structure, the support shaft can reliably support the multiple bearings, and the outer end of the support shaft can be inserted into the inner wall of the end cap. The multiple bearings can reliably apply a compressive force to one side of the multi-wedge belt to increase the contact area between the multi-wedge belt and the small pulley. In addition, the multiple bearings can rotate with the multi-wedge belt, which has the advantage of low friction, thereby avoiding wear of the multi-wedge belt and loss of power of the drive motor.

[0008] In one possible implementation, an insert is coaxially embedded inside the large pulley, and the insert is circumferentially limited to the large pulley. A slot is provided on the inner end of the insert, and one end of the drive shaft is inserted into the slot. Multiple second limiting planes are circumferentially provided on the outer wall of one end of the drive shaft. Each second limiting plane is tightly attached to the groove wall of the slot to circumferentially limit the drive shaft and the insert. One end of the drive shaft is fastened to the insert. With this structure, the drive shaft can be reliably connected to the large pulley under the action of the insert. Since each second limiting plane is tightly attached to the groove wall of the slot to circumferentially limit the drive shaft and the insert, slippage between the large pulley and the drive shaft can be effectively avoided, so that the large pulley can reliably drive the drive shaft and the snowplow auger to rotate. In addition, since the drive shaft and the insert are fastened, the insert and the large pulley can be prevented from detaching from the drive shaft.

[0009] In one possible implementation, the outer peripheral wall of the insert is provided with a regular hexagonal annular protrusion, and the interior of the large pulley is coaxially provided with a groove adapted to the annular protrusion. The annular protrusion and the groove are fixed together to limit the circumferential positioning of the insert and the large pulley. With this structure, after the annular protrusion and the groove are fixed together, the circumferential positioning between the insert and the large pulley can be reliably achieved, thereby enabling the large pulley to reliably drive the insert to rotate, so as to avoid slippage between the large pulley and the insert. After the annular protrusion and the groove are engaged, the axial positioning of the insert and the large pulley can be achieved.

[0010] In one possible implementation, one end of the drive shaft is fastened to the insert by a bolt. The bolt's threaded portion coaxially passes through the insert from the outside to the inside and is threaded into a threaded hole located on one end of the drive shaft. With this structure, one end of the drive shaft can be reliably fixed to the insert to prevent the insert and the large pulley from detaching from the drive shaft.

[0011] In one possible implementation, the snow sweeper further includes a support plate made of metal material. One end of the support plate is fixed to the housing located at the location of the drive motor, and the other end of the support plate is fixed to the housing located at the outer edge of the bearing assembly on one side of the large pulley. By adopting the above structure, the support plate made of metal material can improve the structural strength of the housing located at the location of the transmission cavity. That is, during the process of the small pulley driving the large pulley to rotate via the multi-wedge belt, the housing made of plastic material located at the location of the transmission cavity can be prevented from deforming. This ensures that the center distance between the small pulley and the large pulley does not change, thus enabling the small pulley to reliably drive the large pulley to rotate via the multi-wedge belt. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a three-dimensional structural diagram of the present invention after removing the end caps and part of the housing;

[0014] Figure 3 This is a partially exploded three-dimensional structural diagram of the present invention after removing the end caps and part of the housing.

[0015] Figure 4 A three-dimensional structural diagram of the snow-shoveling auger after it is fastened to the drive shaft;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure after the insert and the large pulley are separated. Detailed Implementation

[0017] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] See Figure 1-5 As shown in the figure, this application discloses a snowplow, including a housing 1, a handle assembly 2, a snow shovel auger 3, and a drive motor 4. The handle assembly 2 is fixed to the rear side of the housing 1, the snow shovel auger 3 is disposed on the inner side of the front part of the housing 1, the drive motor 4 is fixed inside the housing 1, both ends of the drive shaft 5 located in the snow shovel auger 3 are rotatably connected to the housing 1 through bearing assemblies 6, and one end of the drive shaft 5 is connected to the drive motor 4. One end of the snow shovel auger 3 is provided with a square-shaped groove 31, and a transmission plate 32 adapted to the shape of the groove 31 is fixed in the groove 31. The middle part of the transmission plate 32 is provided with a shaft hole 321, and the drive shaft 5 passes through the shaft hole 321. The outer wall of the drive shaft 5 is provided with a plurality of first limiting planes 51 circumferentially, and each first limiting plane 51 is tightly attached to the hole wall of the shaft hole 321 to limit the drive shaft 5 and the transmission plate 32 circumferentially. The aforementioned transmission plate is fastened to the snow shovel auger by a plurality of circumferentially spaced rivets.

[0022] A transmission cavity 11 is provided on one side of the housing 1. An end cover 12 for sealing the transmission cavity 11 is fixed on the housing 1. One end of the transmission shaft 5 extends into the transmission cavity 11 and is coaxially fixed with a large pulley 7. A small pulley 41 is coaxially fixed on the output shaft of the drive motor 4. The large pulley 7 is connected to the small pulley 41 through a multi-wedge belt 8. A tensioning component is also connected in the transmission cavity 11. The tensioning component is used to apply a compressive force to one side of the multi-wedge belt 8 to increase the contact area between the multi-wedge belt 8 and the small pulley 41. With this structure, under the action of the tensioning component, the tensioning component can apply a compressive force to one side of the multi-wedge belt to increase the contact area between the multi-wedge belt and the small pulley. Thus, when the drive motor drives the transmission shaft and the snow shovel auger to rotate through the small pulley, the multi-wedge belt and the large pulley, slippage between the multi-wedge belt and the small pulley can be effectively avoided, that is, the drive motor can reliably drive the snow shovel auger to rotate.

[0023] The tensioning assembly includes a support shaft 91 and multiple bearings 92 coaxially sleeved on the support shaft 91. The inner end of the support shaft 91 is fitted into the housing of the drive motor 4. The multiple bearings 92 are in close contact with the outer wall of one side of the multi-wedge belt 8 and apply a compressive force to one side of the multi-wedge belt 8. With this structure, the support shaft can reliably support the multiple bearings, and the outer end of the support shaft can be inserted into the inner wall of the end cover. The multiple bearings can reliably apply a compressive force to one side of the multi-wedge belt to increase the contact area between the multi-wedge belt and the small pulley. In addition, the multiple bearings can rotate with the multi-wedge belt, which has the advantage of low friction, thereby avoiding wear of the multi-wedge belt and loss of power of the drive motor.

[0024] An insert 10 is coaxially embedded inside the large pulley 7, and the insert 10 is circumferentially limited to the large pulley 7. A slot 101 is provided on the inner end of the insert 10, and one end of the drive shaft 5 is inserted into the slot 101. Multiple second limiting planes 52 are circumferentially provided on the outer wall of one end of the drive shaft 5. Each second limiting plane 52 is tightly attached to the groove wall of the slot 101 to circumferentially limit the drive shaft 5 and the insert 10. One end of the drive shaft 5 is fastened to the insert 10. With this structure, under the action of the insert, the drive shaft can be reliably connected to the large pulley. Since each second limiting plane is tightly attached to the groove wall of the slot to circumferentially limit the drive shaft and the insert, slippage between the large pulley and the drive shaft can be effectively avoided, so that the large pulley can reliably drive the drive shaft and the snowplow auger to rotate. In addition, since the drive shaft and the insert are fastened, the insert and the large pulley can be prevented from detaching from the drive shaft.

[0025] The insert 10 has a hexagonal annular protrusion 102 on its outer peripheral wall. The large pulley 7 has a groove 71 that matches the annular protrusion 102 on its inner coaxial side. The annular protrusion 102 and the groove 71 are fixed together to limit the circumferential positioning of the insert 10 and the large pulley 7. With this structure, after the annular protrusion and the groove are fixed together, the insert and the large pulley can be reliably limited in the circumferential direction. This allows the large pulley to reliably drive the insert to rotate, thus avoiding slippage between the large pulley and the insert. After the annular protrusion and the groove are engaged, the insert and the large pulley can be axially limited.

[0026] One end of the drive shaft 5 is fastened to the insert 10 by a bolt 103. The threaded part of the bolt 103 passes through the insert 10 coaxially from the outside to the inside and is threadedly fastened to the threaded hole 53 located on one end of the drive shaft 5. With this structure, one end of the drive shaft can be reliably fixed together with the insert to avoid the insert and the large pulley from coming off the drive shaft.

[0027] The snow sweeper also includes a support plate 20 made of metal. One end of the support plate 20 is fixed to the housing 1 located at the position of the drive motor 4, and the other end of the support plate 20 is fixed to the housing 1 located at the outer edge of the bearing assembly 6 on one side of the large pulley 7. By adopting the above structure, the support plate made of metal can improve the structural strength of the housing located at the position of the transmission cavity. That is, during the process of the small pulley driving the large pulley to rotate via the multi-wedge belt, the housing made of plastic material located at the position of the transmission cavity can be prevented from deforming. This ensures that the center distance between the small pulley and the large pulley does not change, thus enabling the small pulley to reliably drive the large pulley to rotate via the multi-wedge belt.

[0028] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A snowplow, comprising a housing (1), a handle assembly (2), a snow auger (3), and a drive motor (4); the handle assembly (2) is fixed to the rear side of the housing (1), the snow auger (3) is disposed on the inner side of the front part of the housing (1), the drive motor (4) is fixed inside the housing (1), both ends of a drive shaft (5) located in the snow auger (3) are rotatably connected to the housing (1) via bearing assemblies (6), and one end of the drive shaft (5) is driveably connected to the drive motor (4); characterized in that: One end of the snow shovel auger (3) is provided with a square-shaped sink trough (31). A transmission plate (32) adapted to the shape of the sink trough (31) is fixed in the sink trough (31). A shaft hole (321) is provided in the middle of the transmission plate (32). The transmission shaft (5) passes through the shaft hole (321). A plurality of first limiting planes (51) are provided circumferentially on the outer wall of the transmission shaft (5). Each first limiting plane (51) is in close contact with the hole wall of the shaft hole (321) so that the transmission shaft (5) and the transmission plate (32) are circumferentially limited.

2. The snowplow according to claim 1, characterized in that: A transmission cavity (11) is provided on one side of the housing (1). An end cap (12) for sealing the transmission cavity (11) is fixed on the housing (1). One end of the transmission shaft (5) extends into the transmission cavity (11) and is coaxially fixed with a large pulley (7). A small pulley (41) is coaxially fixed on the output shaft of the drive motor (4). The large pulley (7) is connected to the small pulley (41) through a multi-wedge belt (8). A tensioning assembly is also connected in the transmission cavity (11). The tensioning assembly is used to apply a squeezing force to one side of the multi-wedge belt (8) to increase the contact area between the multi-wedge belt (8) and the small pulley (41).

3. The snowplow according to claim 2, characterized in that: The tensioning assembly includes a support shaft (91) and a plurality of bearings (92) coaxially sleeved on the support shaft (91). The inner end of the support shaft (91) is fitted into the housing of the drive motor (4). The plurality of bearings (92) are in close contact with the outer wall of one side of the multi-wedge (8) and apply a compressive force to one side of the multi-wedge (8).

4. The snowplow according to claim 2, characterized in that: The large pulley (7) has an insert (10) embedded coaxially inside, and the insert (10) is circumferentially limited to the large pulley (7); a slot (101) is provided on the inner end of the insert (10), and one end of the drive shaft (5) is inserted into the slot (101). A plurality of second limiting planes (52) are circumferentially provided on the outer wall of one end of the drive shaft (5), and each second limiting plane (52) is tightly attached to the groove wall of the slot (101) so that the drive shaft (5) and the insert (10) are circumferentially limited, and one end of the drive shaft (5) is fastened to the insert (10).

5. The snowplow according to claim 4, characterized in that: The insert (10) has a hexagonal annular protrusion (102) on its outer peripheral wall. The large pulley (7) has a groove (71) coaxially arranged inside to match the annular protrusion (102). The annular protrusion (102) and the groove (71) are fitted together to limit the circumferential positioning of the insert (10) and the large pulley (7).

6. The snowplow according to claim 4, characterized in that: One end of the drive shaft (5) is fastened to the insert (10) by a bolt (103). The screw part of the bolt (103) passes through the insert (10) coaxially from the outside to the inside and is threaded to the threaded hole (53) located on one end of the drive shaft (5).

7. The snowplow according to any one of claims 2-6, characterized in that: The snow sweeper also includes a support plate (20) made of metal material. One end of the support plate (20) is fixed to the housing (1) located at the position of the drive motor (4), and the other end of the support plate (20) is fixed to the housing (1) at the outer edge of the bearing assembly (6) located on one side of the large pulley (7).

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