Adjustable width snowplow with obstacle climbing function

Abstract

The application relates to an adjustable-width snow shovel with an obstacle-crossing function, and belongs to the technical field of snow removal equipment. The snow shovel comprises a shovel bucket, an avoidance assembly, a mounting assembly and a width adjusting piece. The shovel bucket is composed of two shovel plates, the included angle between the two shovel plates is adjusted through the width adjusting piece, the overall width of the shovel bucket is changed, the snow shovel can adapt to roads with different widths, and the snow removal efficiency is improved. The avoidance assembly comprises an avoidance plate, a force transmission rod and a force transmission spring, can make the avoidance plate rotate and compress the spring to realize avoidance when obstacles on the road surface are encountered, and can automatically reset after obstacles are crossed. The mounting assembly installs the shovel bucket on a mobile carrier through a mounting frame and a connecting frame. A support assembly adjusts the working height of the shovel bucket through a support rod and a sleeve. The scheme makes the snow shovel adapt to different road widths, has an obstacle-crossing protection function, and improves the operation adaptability and the service life of the equipment.

Description

Technical Field

[0001] This application relates to the technical field of snow removal equipment, and in particular to an adjustable-width snowplow with obstacle-crossing capability. Background Technology

[0002] Snowplows are commonly used in winter road maintenance to remove snow and ensure traffic safety. However, most snowplows on the market are designed with a fixed width, which has significant limitations in practical use. When the road width is smaller than the bucket width, the bucket cannot smoothly enter narrow sections to operate, resulting in parts of the road surface that cannot be cleared, and snow residue affecting traffic flow. Operators often need to replace the equipment or use auxiliary tools to fill in the gaps, which not only reduces snow removal efficiency but also increases workload and costs.

[0003] Furthermore, the bucket is a rigid structure, typically made of hard materials such as metal. During snow removal, if there are protrusions on the road, such as rocks or other obstacles, the lower end of the bucket will directly impact these protrusions, easily causing deformation, cracks, or wear. This damage will affect the lifespan of the equipment. Utility Model Content

[0004] To address the problems of fixed-width snowplows being unable to adapt to narrow roads and rigid structures being prone to collisions and damage from obstacles, this application provides an adjustable-width snowplow with obstacle-crossing capability.

[0005] The adjustable-width snowplow with obstacle-crossing capability provided in this application adopts the following technical solution: An adjustable-width snowplow with obstacle-crossing capability includes a bucket, a clearance assembly, a mounting assembly, and a width adjustment component. The mounting assembly includes a mounting frame. The bucket consists of two blades, each disposed on one side of the mounting frame. One end of the width adjustment component is mounted on the mounting frame, and the other end is disposed on one of the blades. The width adjustment component is used to adjust the overall width of the bucket. The clearance assembly includes a clearance plate, a force transmission rod, and a force transmission spring. The clearance plate is rotatably disposed at the lower end of the bucket. One end of the force transmission rod is disposed on the clearance plate, and the other end is disposed on the side wall of the bucket. The force transmission spring is sleeved on the force transmission rod and connects the force transmission rod to the clearance plate.

[0006] By adopting the above technical solution, the width adjustment component achieves flexible adjustment of the working width of the bucket by changing the relative position of the two blades, enabling the snowplow to adapt to road environments of different widths, thereby improving the equipment's adaptability and operating range. When the obstacle avoidance component encounters an obstacle during snow removal, it effectively buffers and absorbs impact energy by utilizing the rotational motion of the obstacle avoidance plate and the elastic energy storage characteristics of the force transmission spring. After clearing the obstacle, the obstacle avoidance plate is automatically driven to return to its initial working posture. This mechanism significantly reduces the direct rigid contact between the bucket and the obstacle, lowering the possibility of bucket deformation, cracking, or wear, and enhancing the equipment's durability and reliability.

[0007] Preferably, the width adjusting component is a width adjusting hydraulic cylinder.

[0008] By adopting the above technical solution, the included angle between the two blades can be adjusted by the width adjustment component, thereby changing the overall width of the bucket, so that the snowplow can adapt to roads of different widths and improve snow removal efficiency.

[0009] Preferably, the mounting assembly further includes a connecting frame, which is disposed on the connecting frame and mounted on the mobile vehicle.

[0010] By adopting the above technical solution, the connecting frame provides a reliable connection between the mounting frame and the mobile carrier. The mounting frame, through the combination with the connecting frame via the waist-shaped groove, allows the operator to continuously adjust the pitch angle of the mounting frame and the entire bucket within a certain range, which facilitates raising the bucket during transportation and lowering the bucket during operation, thereby enhancing the operational flexibility and maneuverability of the equipment.

[0011] Preferably, the upper end of the bucket is provided with a snow baffle.

[0012] By adopting the above technical solution, the snow baffle installed on the upper part of the bucket forms a physical barrier, which can effectively prevent the snow being shoveled from being thrown and overflowing from the area above and behind the bucket, thereby ensuring that the snow is effectively guided and collected, and improving the collection efficiency and cleanliness of snow removal operations.

[0013] Preferably, a warning bar is provided on the bucket.

[0014] By adopting the above technical solution, the warning pole installed on the bucket can play a clear visual warning role at night, in foggy weather or other low visibility conditions, reminding surrounding personnel and vehicles to pay attention and avoid the area, thereby enhancing safety during snow removal operations in the field or on roads.

[0015] Preferably, the bucket is also provided with reinforcing ribs.

[0016] By adopting the above technical solution, the reinforcing ribs are integrated into the side wall of the bucket as an additional supporting structure, which significantly enhances the rigidity and bending and torsional resistance of the main structure of the bucket, making it less prone to permanent deformation when subjected to uneven snow loads or accidental impacts, thereby improving the structural durability and reliability of the equipment.

[0017] Preferably, the bucket is further provided with a support assembly, the support assembly including a support rod, the support rod being vertically arranged on the bucket, and the lower end of the support rod being provided with a wear-resistant sliding cup.

[0018] By adopting the above technical solution, and through the sliding fit structure between the support rod and the support cylinder, combined with the ground support function of the wear-resistant slip cup, convenient adjustment of the working height of the bucket is achieved. This structure enables the snowplow to quickly adapt to different snow depths and road surface smoothness requirements, while maintaining the stable posture of the bucket during operation, thus enhancing the equipment's adaptability to complex road conditions.

[0019] Preferably, the support assembly further includes a sleeve, which is fitted onto the support rod and located between the wear-resistant slip cup and the bucket. The sleeve is used to adjust the distance between the bucket and the road surface.

[0020] By adopting the above technical solution, the effective length of the entire support assembly can be changed by increasing or decreasing the number of sleeves fitted on the support rod, thereby directly adjusting the working height between the bucket and the road surface. This adjustment method allows operators to conveniently control the ground contact height of the wear-resistant slipper according to actual road conditions and snow removal needs. This not only ensures the stability of the bucket under different road conditions but also provides the necessary rotational clearance for the obstacle avoidance plate when encountering obstacles, ensuring smooth and reliable obstacle avoidance actions.

[0021] In summary, this application includes the following beneficial technical effects: 1. By adjusting the angle between the two blades using the width adjustment component, the overall width of the bucket can be changed, allowing the snowplow to adapt to roads of different widths and improving snow removal efficiency.

[0022] 2. The obstacle-crossing function is achieved through the obstacle avoidance component. Specifically, through the cooperation of the obstacle avoidance plate, the force transmission rod and the force transmission spring, the obstacle avoidance plate is allowed to rotate and compress the force transmission spring when it encounters an obstacle, absorb the impact energy, reduce the direct impact between the bucket and the obstacle, reduce the risk of bucket deformation, cracking or wear, and automatically reset after overcoming the obstacle to maintain the continuity of snow removal operations.

[0023] 3. The support assembly adjusts the working height of the bucket through the support rod and sleeve, ensuring that the clearance plate has sufficient rotation space, further improving adaptability and reliability. Attached Figure Description

[0024] Figure 1This is a schematic diagram illustrating the overall structure in the embodiments of this application.

[0025] Figure 2 This is a structural schematic diagram illustrating the connecting frame in the embodiments of this application.

[0026] Figure 3 This is a structural schematic diagram illustrating the back of the bucket in an embodiment of this application.

[0027] Figure 4 This is a structural schematic diagram illustrating the avoidance component and the support component in the embodiments of this application.

[0028] Figure 5 This is a structural schematic diagram of the front of the bucket in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Bucket; 11. Shovel plate; 111. Reinforcing rib; 112. Warning pole; 113. Baffle plate; 114. Snow baffle; 115. Support frame; 1151. Support cylinder; 2. Avoidance assembly; 21. Avoidance plate; 211. Support rod; 22. Force transmission rod; 221. Adjusting nut; 222. Pad; 223. Push plate; 23. Force transmission spring; 24. Mounting plate; 3. Support assembly; 31. Support rod; 311. Wear-resistant slip cup; 312. Pin; 32. Sleeve; 33. Washer; 4. Mounting assembly; 41. Mounting bracket; 42. Connecting bracket; 421. Support; 4211. Waist groove; 5. Width adjustment component. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses an adjustable-width snowplow with obstacle-crossing capability, as described in the embodiments below. Figure 1 The system includes a bucket 1, a clearance assembly 2, a mounting assembly 4, and a width adjustment component 5. A support assembly 3 is also mounted on the bucket 1. One end of the mounting assembly 4 is connected to a mobile vehicle, and the bucket 1 is mounted on the other end of the mounting assembly 4. In this embodiment, the mobile vehicle is an ATV. The width adjustment component 5 is used to adjust the width of the bucket 1. The clearance assembly 2 enables the bucket 1 to avoid obstacles during snow removal and promptly resets itself after clearance to continue clearing snow. The support assembly 3 supports the bucket 1 during operation and can adjust the working height of the bucket 1 according to actual road conditions.

[0032] Reference Figures 1-3The mounting assembly 4 includes a connecting frame 42 and a mounting bracket 41. One end of the connecting frame 42 is fixedly connected to the ATV, and the other end of the connecting frame 42 is fixedly connected to a support 421. The support 421 has a waist-shaped groove 4211. One end of the mounting bracket 41 is rotatably connected to the end of the connecting frame 42, and the mounting bracket 41 is also fixedly connected to the waist-shaped groove 4211 of the support 421 by a set bolt. The purpose of providing the waist-shaped groove 4211 is to facilitate the adjustment of the deflection angle of the mounting bracket 41 relative to the connecting frame 42.

[0033] Reference Figures 1-3 When snow removal is required, the mounting frame 41 is tilted downward relative to the connecting frame 42, so that the bucket 1 is lowered to the working position, thereby ensuring that the bucket 1 can effectively contact and remove snow. When the snow removal operation is completed or snow removal is not required, the mounting frame 41 is tilted upward, so that the bucket 1 is lifted off the ground, so as to avoid unnecessary contact or collision between the bucket 1 and the ground or other objects on the ground during the movement with the ATV.

[0034] Reference Figures 1-3 In this embodiment, the bucket 1 consists of two shovel plates 11, which are mounted on the mounting frame 41. Specifically, both shovel plates 11 are rotatably connected to the end of the mounting frame 41 away from the connecting frame 42. A width adjusting component 5 is used to adjust the angle between the two shovel plates 11. Specifically, in this embodiment, two sets of width adjusting components 5 are provided, each set positioned between a shovel plate 11 and the mounting frame 41. In this embodiment, the width adjusting component 5 is a width adjusting hydraulic cylinder. The cylinder body of the width adjusting hydraulic cylinder is rotatably connected to the mounting frame 41, while its piston rod is rotatably connected to the corresponding shovel plate 11. By controlling the extension and retraction of the piston rod of the width adjusting hydraulic cylinder, the shovel plate 11 can be directly driven to rotate around its hinge point with the mounting frame 41, thereby changing the included angle between the two shovel plates 11.

[0035] Reference Figures 1-3The width adjustment component 5 is used to adjust the included angle between the two blades 11, thereby changing the overall width and shape of the bucket 1 to adapt to different snow removal needs. When it is necessary to increase the width of the bucket 1, the two width adjustment hydraulic cylinders are operated to synchronously retract their piston rods, thereby increasing the included angle between the two blades 11, and the overall width of the bucket 1 increases accordingly. If it is necessary to decrease the width of the bucket 1, the width adjustment hydraulic cylinders are controlled to synchronously extend their piston rods, thereby decreasing the included angle between the two blades 11. In addition, the width adjustment hydraulic cylinders can also change the shape of the bucket 1 through different adjustment combinations to achieve a variety of snow removal functions. For example, when both width adjustment hydraulic cylinders are adjusted to retract their piston rods and form an angle greater than 180° between the two blades 11 in the forward direction of the bucket 1, the forward movement of the bucket 1 can divert the snow to both sides of the road. When one width adjustment hydraulic cylinder is adjusted to retract its piston rod and the other width adjustment hydraulic cylinder is adjusted to extend its piston rod, the overall angle of the bucket 1 is deflected, thereby concentrating the snow and pushing it to one side of the road.

[0036] Reference Figure 1 , Figure 4 and Figure 5 The avoidance assembly 2 includes an avoidance plate 21, a force transmission rod 22, a force transmission spring 23, and a mounting plate 24. In this embodiment, each shovel plate 11 is equipped with a set of avoidance assemblies 2. This embodiment uses one set of avoidance assemblies 2 as an example for explanation. The lower end of the shovel plate 11 is rotatably connected to the avoidance plate 21. A reinforcing rib 111 is fixedly connected to the side wall of the shovel plate 11 near the mounting frame 41. The mounting plate 24 is fixedly connected between the two reinforcing ribs 111. A support rod 211 is fixedly connected to the side wall of the avoidance plate 21 near the mounting frame 41. The force transmission rod 22 is vertically arranged. One end of the force transmission rod 22 is rotatably connected to the end of the support rod 211, and the other end of the force transmission rod 22 is slidably connected to the mounting plate 24. The other end of the force transmission rod 22 is also threadedly connected to an adjusting nut 221. A pad 222 is also fitted on the force transmission rod 22, and the pad 222 is located between the adjusting nut 221 and the mounting plate 24. A push plate 223 is also fixedly connected to the force transmission rod 22. The push plate 223 is located at the lower end of the mounting plate 24. A force transmission spring 23 is sleeved on the force transmission rod 22, with one end of the spring abutting against the mounting plate 24 and the other end abutting against the push plate 223. Under the initial compression of the force transmission spring 23, its elastic restoring force continues to act on the push plate 223 and is further transmitted through the force transmission rod 22 to the support rod 211 hinged to the lower end of the force transmission rod 22 and the clearance plate 21. At the same time, this force also ensures that the pad 222 sleeved on the force transmission rod 22 is always stably pressed against the top wall of the mounting plate 24 under the limiting action of the adjusting nut 221. This structure provides a stable holding force for the clearance plate 21, ensuring that under normal snow removal conditions without encountering obstacles, the clearance plate 21 can overcome the influence of its own weight and other external forces and stably maintain its preset initial tilt angle.

[0037] Reference Figure 1 , Figure 4 and Figure 5 During snow removal operations, when the avoidance plate 21 encounters a protruding obstacle on the road surface, the obstacle exerts a force on the avoidance plate 21, hindering its forward movement and causing it to rotate backward around its rotational connection point with the shovel plate 11. This rotation of the avoidance plate 21 moves the support rod 211, which pushes one end of the force transmission rod 22, causing it to slide along the mounting plate 24. The sliding of the force transmission rod 22 compresses the force transmission spring 23 via the push plate 223. The force transmission spring 23 absorbs the impact energy through elastic deformation, allowing the avoidance plate 21 to temporarily move upward to avoid the obstacle. This process effectively prevents direct impact between the bucket 1 and the obstacle, preventing deformation, cracking, or wear of the bucket 1. After the avoidance plate 21 passes the obstacle, the restoring force of the force transmission spring 23 pushes the force transmission rod 22 back to its original position, causing the avoidance plate 21 to return to its initial position and continue contact with the road surface to clear snow.

[0038] Reference Figure 1 and Figure 4 By turning the adjusting nut 221, the effective length of the force transmission rod 22 can be changed, thereby causing the avoidance plate 21, which is hinged to the lower end of the force transmission rod 22, to rotate around the hinge point between it and the shovel plate 11. This adjustment mechanism allows the operator to set the initial tilt angle of the avoidance plate 21 relative to the direction of travel according to the actual road conditions. Specifically, when the road surface to be cleared is relatively flat, the avoidance plate 21 can be adjusted to an angle more biased towards the direction of travel. This posture allows the lower edge of the avoidance plate 21 to more effectively cut into and shovel up the snow on the ground, thereby achieving the best snow removal effect. Conversely, if it is anticipated that there are many or irregular protruding obstacles on the road surface, the avoidance plate 21 can be adjusted to a more backward tilt angle. This posture allows the avoidance plate 21 to be pushed and rotated more quickly and effortlessly when it comes into contact with an obstacle, reducing the risk of the obstacle getting stuck and improving the sensitivity and reliability of the avoidance action. The design of the obstacle avoidance component 2 enables the bucket 1 to flexibly avoid obstacles when it encounters them, while quickly resetting through a spring mechanism to maintain the snow removal effect, thereby reducing snow residue on the road surface and improving snow removal efficiency and equipment lifespan.

[0039] Reference Figure 1 and Figure 4The support assembly 3 includes a support rod 31, a sleeve 32, and a washer 33. A support frame 115 is fixedly connected to the side wall of the bucket 1 near the mounting bracket 41, and a support cylinder 1151 is vertically fixedly connected to the support frame 115. The support rod 31 is slidably connected to the support cylinder 1151, and a wear-resistant slip cup 311 is fixedly connected to its lower end. During snow removal operations, the wear-resistant slip cup 311 is in direct contact with the ground. The sleeve 32 is fitted over the support rod 31 and is located between the support cylinder 1151 and the wear-resistant slip cup 311. The sleeve 32 effectively increases the distance between the bucket 1 and the ground, thereby providing the necessary rotation space for the clearance plate 21.

[0040] Reference Figure 4 The upper end of the support rod 31 is threadedly connected to a pin 312, which prevents the support rod 31 from accidentally slipping out of the support cylinder 1151. In addition, the support rod 31 has several shims 33 stored on it. These shims 33 are fitted onto the support rod 31 and located between the pin 312 and the support cylinder 1151, used for fine-tuning the working height between the bucket 1 and the road surface. When making fine-tuning, first remove the pin 312, then remove the shims 33, support rod 31, and sleeve 32 in sequence. Next, refit the required number of shims 33 onto the support rod 31 with the sleeve 32 already installed. Finally, reinstall the assembled support rod 31 and sleeve 32 into the support cylinder 1151 of the bucket 1 and tighten the pin 312 to complete the adjustment.

[0041] Reference Figure 1 and Figure 5 A warning bar 112 is vertically fixedly connected to the bucket 1. This warning bar 112 serves as an effective warning and marker in low-visibility conditions such as nighttime or foggy weather, contributing to improved operational safety. Furthermore, a snow baffle 114 is fixedly connected to the upper end of the bucket 1 on the side closest to the direction of travel. This snow baffle 114 blocks and limits snow spillage from above the bucket 1, ensuring the bucket 1 collects snow. Additionally, a baffle plate 113 is fixedly connected between the two blades 11. This baffle plate 113 fills the gap at the joint of the two blades 11, preventing snow leakage from the middle of the bucket 1. In this embodiment, both the snow baffle 114 and the baffle plate 113 are made of flexible materials such as rubber. This type of material not only effectively blocks snow, but its inherent flexibility also allows the baffle plate 113 to undergo adaptive deformation when the angle of the two blades 11 is adjusted.

[0042] The implementation principle of the adjustable-width snowplow with obstacle-crossing function in this application embodiment is as follows: When the snow removal device of this application embodiment is working, the included angle between the blades 11 is changed by the width adjustment component 5, thereby flexibly adjusting the overall width of the bucket 1. When the road is narrow, the included angle of the blades 11 is reduced to narrow the width of the bucket 1, making it easier to enter narrow road sections for snow removal operations; when the road is wide, the included angle of the blades 11 is increased to increase the width of the bucket 1, improving snow removal efficiency. In addition, the width adjustment component 5 can also form different shapes of the blades 11 through different adjustment combinations, realizing the function of diverting snow to both sides of the road or concentrating snow to one side, adapting to various snow removal needs.

[0043] During snow removal, if the avoidance plate 21 encounters a protruding obstacle on the road surface, the force of the obstacle causes the avoidance plate 21 to rotate around the hinge point, which in turn moves the support rod 211. The support rod 211 pushes the force transmission rod 22 to slide along the mounting plate 24 and compress the force transmission spring 23. The force transmission spring 23 absorbs the impact energy through elastic deformation, allowing the avoidance plate 21 to temporarily move upward to avoid the obstacle, preventing the bucket 1 from directly colliding with the obstacle. After the avoidance plate 21 passes the obstacle, the restoring force of the force transmission spring 23 pushes the force transmission rod 22 to reset, causing the avoidance plate 21 to return to its initial position and continue clearing snow. The effective length of the force transmission rod 22 can be adjusted by turning the adjusting nut 221, thereby changing the initial tilt angle of the avoidance plate 21 to adapt to different working conditions on flat roads or roads with multiple obstacles.

[0044] The support assembly 3 slides up and down within the support cylinder 1151 via the support rod 31, and, in conjunction with the addition or removal of the shims 33, adjusts the ground contact height of the wear-resistant sliding cup 311, thereby precisely controlling the working height of the bucket 1. The configuration of the sleeve 32 ensures that the avoidance plate 21 has sufficient turning range when encountering obstacles, guaranteeing the smooth execution and reliability of the avoidance action.

[0045] This device achieves flexible adjustment of the bucket 1 width through the width adjustment component 5, overcoming the limitation of a fixed-width bucket 1 being unable to adapt to narrow road sections. The obstacle avoidance component 2, through the synergistic action of the force transmission spring 23 and the force transmission rod 22, enables the bucket 1 to effectively avoid obstacles and quickly return to its original position when encountering them, reducing deformation, cracks, or wear of the bucket 1 and extending the service life of the equipment. The support component 3, through its height adjustment function, further enhances the device's adaptability to complex road surfaces. Overall, this device improves snow removal efficiency and reduces operational burden and maintenance costs.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable-width snowplow with obstacle-crossing capability, characterized in that: The device includes a bucket (1), a clearance assembly (2), a mounting assembly (4), and a width adjustment component (5). The mounting assembly (4) includes a mounting frame (41). The bucket (1) is composed of two shovel plates (11), each of which is disposed on one side of the mounting frame (41). The width adjustment component (5) is disposed between the mounting frame (41) and the shovel plates (11). The width adjustment component (5) is used to adjust the overall width of the bucket (1). The avoidance assembly (2) includes an avoidance plate (21), a force transmission rod (22), and a force transmission spring (23). The avoidance plate (21) is rotatably mounted on the lower end of the bucket (1). One end of the force transmission rod (22) is mounted on the avoidance plate (21), and the other end of the force transmission rod (22) is mounted on the side wall of the bucket (1). The force transmission spring (23) is sleeved on the force transmission rod (22), and the force transmission spring (23) also connects the force transmission rod (22) to the avoidance plate (21).

2. The adjustable-width snowplow with obstacle-crossing function according to claim 1, characterized in that: The width adjustment component (5) is a width adjustment hydraulic cylinder.

3. The adjustable-width snowplow with obstacle-crossing function according to claim 1, characterized in that: The mounting assembly (4) also includes a connecting frame (42), the mounting frame (41) being disposed on the connecting frame (42), the connecting frame (42) being mounted on the mobile vehicle.

4. The adjustable-width snowplow with obstacle-crossing function according to claim 1, characterized in that: The upper end of the bucket (1) is provided with a snow baffle (114).

5. The adjustable-width snowplow with obstacle-crossing function according to claim 1, characterized in that: A warning bar (112) is provided on the bucket (1).

6. The adjustable-width snowplow with obstacle-crossing function according to claim 1, characterized in that: The bucket (1) is also provided with reinforcing ribs (111).

7. The adjustable-width snowplow with obstacle-crossing function according to claim 1, characterized in that: The bucket (1) is also provided with a support assembly (3), which includes a support rod (31). The support rod (31) is vertically arranged on the bucket (1), and a wear-resistant sliding cup (311) is provided at the lower end of the support rod (31).

8. The adjustable-width snowplow with obstacle-crossing function according to claim 7, characterized in that: The support assembly (3) also includes a sleeve (32), which is sleeved on the support rod (31). The sleeve (32) is located between the wear-resistant slip cup (311) and the bucket (1). The sleeve (32) is used to adjust the distance between the bucket (1) and the road surface.

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