Motor direct connection snow roller

Abstract

The utility model relates to road and site cleaning equipment technical field, and disclose a motor direct connection snow roller, including installation shell, snow roller cylinder and direct connection motor, the installation shell top is fixed with the suspension frame, the snow roller cylinder surface is fixed with a plurality of cleaning brush, the snow roller cylinder surface left and right sides all are through with the extension pipe, the extension pipe and snow roller cylinder through surface fixed connection, the installation shell inner wall left and right sides all are fixed with the bearing with seat, the extension pipe and bearing with seat inner ring fixed connection, the installation shell right side surface is fixed with the square profiled plate, the square profiled plate surface and direct connection motor surface fixed connection, direct connection motor output shaft penetrates the square profiled plate. This motor direct connection snow roller, traditional snow roller drive complex, single function and snow melting agent cannot synchronous accurate delivery's technical problem, has brought the integration, the high -efficient significant beneficial effect.

Description

Technical Field

[0001] This utility model relates to the technical field of road and site cleaning equipment, specifically a motor-driven snow sweeping roller. Background Technology

[0002] Snowplows are essential devices widely used for snow removal on roads, plazas, airport runways, and other areas during winter. Their basic working principle involves a high-speed rotating roller using brushes or scrapers fixed to its outer surface to sweep up and throw snow to one side, quickly creating a clean road surface. Traditionally, snowplows are typically used as standalone accessories, mounted on the front or rear of tractors, construction vehicles, or specialized snowplows via a suspension mechanism.

[0003] Currently, most snowplows on the market use indirect drive. This means the output shaft of a power source (such as a hydraulic motor or electric motor) drives the roller shaft to rotate through a complex transmission mechanism, such as chains and sprockets, belts and pulleys, or gearboxes. This transmission method has several prominent problems: First, the transmission structure is complex and has many parts, resulting in high manufacturing and maintenance costs; second, there is power loss during transmission, leading to relatively low transmission efficiency; third, chains or belts are prone to breakage and slippage under low temperature and high load conditions, resulting in insufficient reliability. Furthermore, existing snowplows have limited functionality; when facing frozen or compacted snow, physical sweeping alone is ineffective, usually requiring another device to spray de-icing agents, making the process cumbersome and inefficient. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a motor-driven snow sweeping roller to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a motor-driven snow sweeper roller, including a mounting shell, a snow sweeper roller, and a direct-drive motor. A suspension frame is fixed to the top of the mounting shell. Multiple cleaning brushes are fixed to the surface of the snow sweeper roller. Extension tubes penetrate the left and right sides of the surface of the snow sweeper roller, and the extension tubes are fixedly connected to the surfaces of the snow sweeper rollers at the penetration points. Bearings with seats are fixed to the left and right sides of the inner wall of the mounting shell, and the extension tubes are fixedly connected to the inner rings of the bearings with seats. A square profile plate is fixed to the right side surface of the mounting shell, and the surface of the square profile plate is fixedly connected to the surface of the direct-drive motor. The output shaft of the direct-drive motor passes through the square profile plate. A direct-drive flange is fixed to the right end of the extension tube on the right side and the output shaft of the direct-drive motor. The direct-drive flanges on the left and right sides are fixedly connected by bolts.

[0006] Preferably, a support bearing is fixed to the surface of the extension tube located inside the snow sweeping roller. An adjusting valve cylinder is fixed to the outer ring of the support bearing. A closed cylinder is slidably connected to the inner wall of the adjusting valve cylinder. A storage cavity is formed inside the closed cylinder. Multiple equidistant axially distributed drug outlets are opened on the surface of the snow sweeping roller. Multiple adjusting holes corresponding to the positions of the drug outlets are opened on the surface of the adjusting valve cylinder. Multiple closed elongated holes corresponding to the positions of the adjusting holes are opened on the surface of the closed cylinder. The length of the closed elongated holes is greater than that of the adjusting holes. The positions of the closed elongated holes and the adjusting holes are staggered. A centrifugal self-locking structure for automatically resetting the closed cylinder is provided on the surface of the adjusting valve cylinder. A locking structure for adjusting the rotation angle of the adjusting valve cylinder is provided on the surface of the snow sweeping roller. A sealing cap is threadedly connected to the surface of the extension tube on the left side.

[0007] Preferably, the centrifugal self-locking structure on the surface of the regulating valve cylinder includes two connecting plates. The connecting plates are fixed to the left and right sides of the inner wall of the regulating valve cylinder. An arc-shaped spring is fixed to the front surface of the connecting plate. An extension plate is fixed to the front end of the arc-shaped spring. The extension plate is fixedly connected to one end of the inner wall of the closed cylinder. Limiting plates are fixed to both the left and right sides of the inner wall of the regulating valve cylinder. The limiting plates are located in front of the extension plates.

[0008] Preferably, the snow sweeping roller surface locking structure includes two adjusting rods. Arc-shaped grooves are provided on both the left and right sides of the snow sweeping roller surface. One end of the adjusting rod passes through the arc-shaped groove and is fixedly connected to the surface of the adjusting valve cylinder. A locking component is provided on the surface of the adjusting rod. Scale lines are provided on both the left and right sides of the snow sweeping roller surface. The scale lines are located below the arc-shaped grooves. A pointer is provided on one side of the adjusting rod surface.

[0009] Preferably, the adjusting rod surface locking assembly includes a fastening nut, the adjusting rod surface is threaded, the inner wall of the fastening nut is threadedly connected to the adjusting rod surface, and the fastening nut is a wing nut.

[0010] Preferably, a telescopic hose is fixed to the surface of the connecting plate, one end of the telescopic hose is fixedly connected to the surface of the extension plate, and the arc-shaped spring is located inside the telescopic hose.

[0011] Preferably, the closed cylinder, adjusting hole and snow sweeping roller are all made of stainless steel or engineering plastic, and the direct-drive motor is a low-speed, high-torque hydraulic motor or servo motor.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are: This invention offers several significant advantages through the innovative combination of a direct-drive motor and a built-in de-icing agent dispensing system. Firstly, the direct-drive structure eliminates easily damaged intermediate links, resulting in extremely high transmission efficiency, a compact structure, reliable operation, and low maintenance costs. Secondly, the unique centrifugal self-locking dispensing mechanism automatically opens during operation and closes when stopped, solving the problem of de-icing agent leakage and waste. Furthermore, the output can be precisely controlled steplessly through a simple mechanical adjustment mechanism, equipped with intuitive scale indicators, making operation convenient and adaptable to various snow conditions, achieving a perfect balance between functionality and economy. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a cross-sectional structural diagram of the snow sweeping roller in this utility model; Figure 5 This is a schematic diagram of the locking structure in this utility model; Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the diagram; Figure 7 This utility model Figure 4 A magnified structural diagram at point B in the diagram.

[0014] The components include: 1. Mounting housing; 2. Snow sweeping roller; 3. Direct-drive motor; 4. Suspension frame; 5. Bearing with seat; 6. Extension tube; 7. Square profile plate; 8. Direct-drive flange; 9. Cleaning brush; 10. Discharge port; 11. Support bearing; 12. Adjusting valve cylinder; 13. Adjusting hole; 14. Sealing cylinder; 15. Sealing elongated hole; 16. Extension plate; 17. Arc spring; 18. Connecting plate; 19. Telescopic hose; 20. Limiting plate; 21. Arc groove; 22. Adjusting rod; 23. Fastening nut; 24. Scale line; 25. Sealing cover. Detailed Implementation

[0015] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0016] Please see Figures 1-7A direct-drive snow sweeper roller includes a mounting housing 1, a snow sweeper roller 2, and a direct-drive motor 3. A suspension bracket 4 is fixed to the top of the mounting housing 1. Multiple cleaning brushes 9 are fixed to the surface of the snow sweeper roller 2. Extension tubes 6 pass through the left and right sides of the surface of the snow sweeper roller 2 and are fixedly connected to the surface of the snow sweeper roller 2 at the penetration points. Bearings 5 ​​with seats are fixed to the left and right sides of the inner wall of the mounting housing 1. The extension tubes 6 are fixedly connected to the inner rings of the bearings 5 ​​with seats. A square profile plate 7 is fixed to the right side surface of the mounting housing 1 and is fixedly connected to the surface of the direct-drive motor 3. The output shaft of the direct-drive motor 3 passes through the square profile plate 7. A direct-drive flange 8 is fixed to the right end of the right extension tube 6 and the output shaft of the direct-drive motor 3. The direct-drive flanges 8 on the left and right sides are fixedly connected by bolts.

[0017] Through the above technical solution, the direct-drive motor 3 drives the direct-drive flange 8 fixed to it to rotate via its output shaft. The rotational torque is directly transmitted to another direct-drive flange 8, which is also fixed to the right extension tube 6, via bolts. This drives the entire snow sweeping roller 2 and its cleaning brush 9 to rotate at high speed within the mounting housing 1 for snow sweeping operations. The seated bearings 5 ​​on both sides of the mounting housing 1 provide stable support for the extension tube 6, ensuring smooth rotation of the snow sweeping roller 2. The suspension frame 4 is used to connect the entire device to the traction equipment. This structural design realizes direct drive of the power source, completely eliminating the intermediate transmission links such as traditional chains, belts, or gearboxes. This not only greatly simplifies the mechanical structure and reduces manufacturing costs and failure points, but also significantly improves transmission efficiency, reduces power loss, and makes the overall structure very compact. This enhances the reliability and durability of working in harsh snow sweeping environments and makes maintenance easier.

[0018] A support bearing 11 is fixed to the surface of the extension tube 6 located inside the snow sweeping roller 2. An adjusting valve cylinder 12 is fixed to the outer ring of the support bearing 11. A closed cylinder 14 is slidably connected to the inner wall of the adjusting valve cylinder 12. A storage cavity is formed inside the closed cylinder 14. Multiple equidistant axially distributed drug outlets 10 are opened on the surface of the snow sweeping roller 2. Multiple adjusting holes 13 corresponding to the positions of the drug outlets 10 are opened on the surface of the adjusting valve cylinder 12. Multiple closed elongated holes 15 corresponding to the positions of the adjusting holes 13 are opened on the surface of the closed cylinder 14. The length of the closed elongated holes 15 is greater than that of the adjusting holes 13. The positions of the closed elongated holes 15 and the adjusting holes 13 are staggered. A centrifugal self-locking structure for automatically resetting the closed cylinder 14 is provided on the surface of the adjusting valve cylinder 12. A locking structure for adjusting the rotation angle of the adjusting valve cylinder 12 is provided on the surface of the snow sweeping roller 2. A sealing cap 25 is threadedly connected to the surface of the left extension tube 6.

[0019] Through the above technical solution, the de-icing agent is stored in the storage chamber formed by the closed cylinder 14. When the snow sweeping roller 2 rotates, the relative position of the closed cylinder 14 and the regulating valve cylinder 12 is controlled by the centrifugal self-locking structure, thereby determining the opening and closing of the delivery channel. When stationary or at low speed, the centrifugal self-locking structure ensures that the closed elongated hole 15 on the closed cylinder 14 is misaligned with the regulating hole 13 on the regulating valve cylinder 12, achieving a seal. When the rotational speed reaches a certain value, the centrifugal force overcomes the resistance, aligning the closed elongated hole 15 with the regulating hole 13, and the de-icing agent is then ejected by centrifugal force through the closed elongated hole 15, the regulating hole 13, and the outlet 10 on the snow sweeping roller 2. By adjusting the circumferential angle of the regulating valve cylinder 12 through the locking structure, the overlapping area of ​​the regulating hole 13 and the outlet 10 can be changed, thereby controlling the discharge amount. The support bearing 11 ensures that the regulating valve cylinder 12 can rotate flexibly relative to the extension pipe 6. This structure enables automatic start and stop of de-icing agent dispensing. Its greatest advantage lies in "centrifugal self-start and spring self-closing," meaning it automatically opens during operation and automatically closes when stopped, effectively preventing leakage and waste of de-icing agent during non-operational periods. Simultaneously, the mechanical structure allows for stepless adjustment of the discharge rate to adapt to different snow conditions, highly integrating snow sweeping and snow melting functions, greatly improving operational efficiency and targeting, and ensuring high reliability.

[0020] The centrifugal self-locking structure on the surface of the regulating valve cylinder 12 includes two connecting plates 18. The connecting plates 18 are fixed to the left and right sides of the inner wall of the regulating valve cylinder 12. An arc spring 17 is fixed to the front surface of the connecting plate 18. An extension plate 16 is fixed to the front end of the arc spring 17. The extension plate 16 is fixedly connected to one end of the inner wall of the closed cylinder 14. Limiting plates 20 are fixed to both the left and right sides of the inner wall of the regulating valve cylinder 12. The limiting plates 20 are located in front of the extension plate 16.

[0021] Through the above technical solution, when the snow sweeping roller 2 is stationary or rotating at low speed, the preload of the arc spring 17 keeps the extension plate 16 and the fixed closed cylinder 14 in an initial position. At this time, the closed elongated hole 15 is completely misaligned with the adjusting hole 13, and the channel is closed. As the speed of the snow sweeping roller 2 increases, centrifugal force acts on the closed cylinder 14 and the extension plate 16. When the centrifugal force is sufficient to overcome the elastic force of the arc spring 17, the closed cylinder 14 will rotate relative to the adjusting valve cylinder 12, causing the closed elongated hole 15 to gradually align with the adjusting hole 13, opening the delivery channel. The limiting plate 20 is used to limit the maximum rotation angle of the closed cylinder 14 to prevent excessive rotation from damaging the arc spring 17 or causing the mechanism to fail. This structure utilizes the balance between centrifugal force and spring force to achieve purely mechanical automatic control, requiring no external energy or electrical control components. It has a simple structure, rapid response, and reliable operation, and is especially suitable for use in harsh environments with low temperature and vibration. The setting of the limiting plate 20 increases the safety and service life of the system, ensuring the stability and repeatability of the self-locking action.

[0022] The snow sweeping roller 2 surface locking structure includes two adjusting rods 22. Arc-shaped grooves 21 are provided on both the left and right sides of the snow sweeping roller 2 surface. One end of the adjusting rod 22 passes through the arc-shaped groove 21 and is fixedly connected to the surface of the adjusting valve cylinder 12. The adjusting rod 22 surface is provided with a locking component. Scale lines 24 are provided on both the left and right sides of the snow sweeping roller 2 surface. The scale lines 24 are located below the arc-shaped groove 21. A pointer is provided on one side of the adjusting rod 22 surface.

[0023] With the above technical solution, the operator can manually move the adjusting rod 22 by loosening the locking component. Since the adjusting rod 22 is fixed to the adjusting valve cylinder 12 and passes through the arc-shaped groove 21 on the snow sweeping roller 2, moving the adjusting rod 22 will cause the adjusting valve cylinder 12 to rotate relative to the snow sweeping roller 2. This rotation changes the relative position of the adjusting hole 13 on the adjusting valve cylinder 12 and the discharge port 10 on the snow sweeping roller 2. When the two are completely misaligned, the flow rate is minimal or even zero; when they are perfectly aligned, the flow rate is maximum. The scale line 24 and the pointer on the adjusting rod 22 provide the operator with an intuitive flow rate reference, facilitating precise setting and repeating previous discharge rate settings.

[0024] The surface locking assembly of the adjusting rod 22 includes a fastening nut 23. The surface of the adjusting rod 22 is threaded, and the inner wall of the fastening nut 23 is threaded to the surface of the adjusting rod 22. The fastening nut 23 is a wing nut.

[0025] With the above technical solution, after the adjusting valve cylinder 12 is rotated to the desired angle using the adjusting rod 22, the wing nut 23, which serves as the fastening nut, is tightened, causing its end face to press firmly against the outer wall of the snow sweeping roller 2. The significant friction generated by the threaded joint locks the relative position of the adjusting rod 22 and the snow sweeping roller 2, thus fixing the angle of the adjusting valve cylinder 12. The wing nut design allows for hand tightening without the need for additional tools.

[0026] A telescopic hose 19 is fixed to the surface of the connecting plate 18. One end of the telescopic hose 19 is fixedly connected to the surface of the extension plate 16. An arc-shaped spring 17 is located inside the telescopic hose 19.

[0027] Through the above technical solution, the telescopic hose 19 completely encloses the arc-shaped spring 17, forming a sealed protective cavity. When the arc-shaped spring 17 is compressed or extended due to centrifugal force, the telescopic hose 19 undergoes corresponding expansion and contraction deformation, but it always isolates the arc-shaped spring 17 from the external environment.

[0028] The closed cylinder 14, the adjusting hole 13 and the snow sweeping roller 2 are all made of stainless steel or engineering plastic, and the direct-drive motor 3 is a low-speed, high-torque hydraulic motor or a servo motor.

[0029] Through the above technical solutions, the closed cylinder 14, the adjusting hole 13, and the snow sweeping roller 2 are made of corrosion-resistant stainless steel or engineering plastics to ensure that they will not be corroded or damaged in long-term contact with the snow melting agent, thus ensuring unobstructed flow and structural strength. The direct-drive motor 3 is selected from either a low-speed, high-torque hydraulic motor or a servo motor. The former can directly provide the large torque required for snow sweeping and has strong overload resistance, while the latter facilitates precise speed control and automated management.

[0030] Working principle: It is installed on the tractor vehicle via the suspension bracket 4 and connected to the power source of the direct-drive motor 3. Before operation, the operator first opens the left-side sealing cover 25, adds granular or powdered de-icing agent to the storage chamber of the sealed cylinder 14, and then tightens the sealing cover 25 to seal it. Next, according to the current snow accumulation and ambient temperature, the amount of de-icing agent is manually adjusted: this process is achieved by loosening the fastening nuts 23 on both sides, referring to the scale line 24 to move the adjusting rod 22, which drives the adjusting valve cylinder 12 to rotate inside the snow sweeping roller 2, thereby changing the overlapping area of ​​its surface adjusting hole 13 and the surface of the snow sweeping roller 2's discharge port 10. After adjustment, the fastening nuts 23 are tightened again to lock the angle. After preparation, the traction vehicle is started and the direct-drive motor 3 is controlled to work. The direct-drive motor 3 transmits power directly to the extension pipe 6 on the right side through a rigid coupling consisting of a direct-drive flange 8 and bolts, thereby driving the entire snow sweeping roller 2 and its surface cleaning brush 9 to rotate counterclockwise at high speed, rolling up the snow in front and throwing it to one side. At the same time, as the speed of the snow sweeping roller 2 continues to increase, the centrifugal force generated acts on the closed cylinder 14. When the centrifugal force is large enough, it will overcome the elastic force of the arc spring 17 and push the closed cylinder 14 to rotate relative to the regulating valve cylinder 12. This causes the closed elongated hole 15 on the surface of the closed cylinder 14 to gradually align from a state of complete misalignment with the regulating hole 13, thereby opening the de-icing agent flow channel. The de-icing agent stored in the closed cylinder 14, under the action of centrifugal force, passes through the aligned closed elongated hole 15 and the regulating hole 13 in sequence, and is finally evenly thrown out through the outlet 10 onto the freshly swept road surface, realizing simultaneous snow sweeping and snow melting. When the operation is completed and the direct-drive motor 3 stops running, the speed of the snow sweeping roller 2 decreases, the centrifugal force weakens, and the restoring force of the arc spring 17 drives the closed cylinder 14 to rotate in the opposite direction and reset, causing the closed elongated hole 15 and the adjusting hole 13 to misalign again, automatically cutting off the flow channel and effectively preventing accidental leakage of de-icing agent when the equipment is stationary. In summary, this device achieves integrated and coordinated operation from direct power transmission and snow sweeping execution to automatic start-stop and precise metering of de-icing agent, solving the technical problems of complex transmission, single function, and inability to synchronously and accurately dispense de-icing agent in traditional snow sweeping rollers, bringing significant benefits of integration and high efficiency.

[0031] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor-driven snow sweeper roller, comprising a mounting housing (1), a snow sweeper roller (2), and a direct-drive motor (3), wherein a suspension bracket (4) is fixed to the top of the mounting housing (1), and a plurality of cleaning brushes (9) are fixed to the surface of the snow sweeper roller (2), characterized in that: The snow sweeping roller (2) has extension tubes (6) running through its left and right sides. The extension tubes (6) are fixedly connected to the surface of the snow sweeping roller (2) at the penetration point. The mounting shell (1) has bearings (5) fixedly mounted on its left and right sides. The extension tubes (6) are fixedly connected to the inner ring of the bearings (5). The mounting shell (1) has a square profile plate (7) fixedly mounted on its right side surface. The square profile plate (7) is fixedly connected to the surface of the direct-drive motor (3). The output shaft of the direct-drive motor (3) runs through the square profile plate (7). The right end of the extension tube (6) on the right side and the output shaft of the direct-drive motor (3) are both fixed with direct-drive flanges (8). The direct-drive flanges (8) on the left and right sides are fixedly connected by bolts.

2. The motor-driven snow sweeping roller according to claim 1, characterized in that: The extension tube (6) is fixed with a support bearing (11) on the surface inside the snow sweeping roller (2). An adjusting valve cylinder (12) is fixed to the outer ring of the support bearing (11). A closed cylinder (14) is slidably connected to the inner wall of the adjusting valve cylinder (12). A storage chamber is formed inside the closed cylinder (14). Multiple equidistant axially distributed discharge ports (10) are opened on the surface of the snow sweeping roller (2). Multiple adjusting holes (13) corresponding to the positions of the discharge ports (10) are opened on the surface of the adjusting valve cylinder (12). The closed cylinder ( 14) Multiple closed elongated holes (15) are opened on the surface corresponding to the position of the adjustment hole (13). The length of the closed elongated holes (15) is greater than that of the adjustment hole (13). The positions of the closed elongated holes (15) and the adjustment hole (13) are staggered. The surface of the adjustment valve cylinder (12) is provided with a centrifugal self-locking structure for automatically resetting the closed cylinder (14). The surface of the snow sweeping roller (2) is provided with a locking structure for adjusting the rotation angle of the adjustment valve cylinder (12). The surface of the extension tube (6) on the left side is threaded with a closed cover (25).

3. A motor-driven snow sweeping roller according to claim 2, characterized in that: The centrifugal self-locking structure on the surface of the regulating valve cylinder (12) includes two connecting plates (18). The connecting plates (18) are fixed on the left and right sides of the inner wall of the regulating valve cylinder (12). An arc spring (17) is fixed on the front surface of the connecting plate (18). An extension plate (16) is fixed at the front end of the arc spring (17). The extension plate (16) is fixedly connected to one end of the inner wall of the closed cylinder (14). Limiting plates (20) are fixed on both the left and right sides of the inner wall of the regulating valve cylinder (12). The limiting plates (20) are located in front of the extension plate (16).

4. A motor-driven snow sweeping roller according to claim 2, characterized in that: The surface locking structure of the snow sweeping roller (2) includes two adjusting rods (22). Arc grooves (21) are provided on both the left and right sides of the surface of the snow sweeping roller (2). One end of the adjusting rod (22) passes through the arc groove (21) and is fixedly connected to the surface of the adjusting valve cylinder (12). The surface of the adjusting rod (22) is provided with a locking component. Scale lines (24) are provided on both the left and right sides of the surface of the snow sweeping roller (2). The scale lines (24) are located below the arc groove (21). A pointer is provided on one side of the surface of the adjusting rod (22).

5. A motor-driven snow sweeping roller according to claim 4, characterized in that: The surface locking assembly of the adjusting rod (22) includes a fastening nut (23). The surface of the adjusting rod (22) is threaded, and the inner wall of the fastening nut (23) is threaded to the surface of the adjusting rod (22). The fastening nut (23) is a wing nut.

6. A motor-driven snow sweeping roller according to claim 3, characterized in that: The connecting plate (18) has a telescopic hose (19) fixed on its surface. One end of the telescopic hose (19) is fixedly connected to the surface of the extension plate (16). The arc spring (17) is located inside the telescopic hose (19).

7. A motor-driven snow sweeping roller according to claim 2, characterized in that: The closed cylinder (14), the adjusting hole (13) and the snow sweeping roller (2) are all made of stainless steel or engineering plastic, and the direct-drive motor (3) is a low-speed, high-torque hydraulic motor or a servo motor.

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