road roller

Abstract

The application provides a road roller, which comprises a steel wheel assembly, a driving part having a fixed end arranged on the steel wheel assembly and a movable end which is displaced in a preset direction, the fixed end being arranged below the movable end, a rocker arranged rotatably on the steel wheel assembly, one end of the rocker being hinged to the movable end, a trimming part being hinged to the other end of the rocker, the trimming part being used for trimming work of a road edge, and the trimming part being configured to be lifted relative to the steel wheel assembly by the rocker when the movable end drives the rocker to swing relative to the steel wheel assembly. The road roller of the application makes the installation position of the trimming part on the steel wheel assembly more compact, is beneficial to the installation space, and reduces the assembly difficulty of the trimming part on the steel wheel assembly.

Description

Technical Field

[0001] This application relates to road roller equipment technology, and more particularly to a road roller. Background Technology

[0002] Currently, after the two steel wheels of a road roller are used to vibrate and compact the asphalt pavement, the finishing components of the road roller are needed to perform the edge trimming process.

[0003] In related technologies, the trimming assembly of a road roller typically includes a hydraulic cylinder and a trimming wheel. The hydraulic cylinder drives the trimming wheel to descend and contact the road surface, where it trims and shapes the road surface. However, for some small road rollers with smaller steel drum diameters, the long stroke of the hydraulic cylinder limits the installation space for both the hydraulic cylinder and the trimming wheel. This can cause the hydraulic cylinder to interfere with components such as the roller shaft and vibratory motor, affecting the installation of the trimming assembly and making its assembly on the road roller more difficult. Utility Model Content

[0004] This application provides a road roller to solve the technical problems of small road rollers having limited installation space for trimming components and high assembly difficulty in the related art.

[0005] This application provides a road roller, including:

[0006] Steel wheel assembly;

[0007] The driving component has a fixed end disposed on the steel wheel assembly and a movable end that reciprocates and extends in a preset direction, the fixed end being located below the movable end;

[0008] A rocker arm is rotatably mounted on the steel wheel assembly, and one end of the rocker arm is hinged to the movable end;

[0009] A trimming component, hinged to the other end of the rocker arm, is used for trimming road edges; the trimming component is configured to be raised and lowered relative to the steel wheel assembly by the rocker arm when the movable end drives the rocker arm to swing relative to the steel wheel assembly.

[0010] In some possible implementations, the steel wheel assembly includes a steel wheel body and an axle passing through the steel wheel body, with the fixed end and the rocker arm both located below the axis of the axle.

[0011] In some possible implementations, it also includes:

[0012] The fork legs are connected to the steel wheel body and are used to connect the frame of the road roller;

[0013] A mounting guard plate is provided on one side of the steel wheel body. The mounting guard plate and the fork foot are connected by fasteners that pass through both of them. The drive component, the rocker arm, and the trimmer are all provided on the mounting guard plate.

[0014] In some possible implementations, the mounting plate is provided with a limiting portion near the movable end and located on the swing path of the rocker arm. The limiting portion is configured to block and limit the swing amplitude of the rocker arm to restrict the descent position of the trimmer.

[0015] In some possible implementations, the limiting part includes a mounting platform disposed on the mounting guard plate and a limiting stop passing through the mounting platform, the length of which is adjustable in the direction toward the movable end.

[0016] In some possible implementations, the limiting stop is threadedly connected to the mounting platform, and the limiting stop has a buffer pad on the side facing the movable end.

[0017] In some possible implementations, the dressing element includes a dressing wheel and a rotating shaft passing through the dressing wheel, with a tapered roller bearing disposed on the rotating shaft; the bearing housing is connected to the tapered roller bearing so that the rocker arm and the dressing wheel are hinged.

[0018] In some possible implementations, the dressing wheel is a trimming wheel, a beveling wheel, or a flattening wheel.

[0019] In some possible implementations, it also includes:

[0020] A spray head is provided on the rocker arm, and the spray head is used to spray water onto the trimming part;

[0021] A sensor is disposed on the steel wheel assembly. The sensor is used to sense the position of the dressing member and to issue a non-operation signal when the dressing member is in the raised position; and / or, the sensor issues an operation signal when the dressing member is in the lowered position.

[0022] An adjusting member is connected to both the spray head and the sensing element. The adjusting member is configured to, upon receiving a working signal from the sensing element, adjust the spray head to spray water onto the trimming part; and / or, upon receiving a non-working signal from the sensing element, adjust the spray head to stop spraying water onto the trimming part.

[0023] In some possible implementations, the drive element is an electric actuator, a hydraulic cylinder, or a pneumatic cylinder.

[0024] The road roller provided in this application has a drive component with a fixed end disposed on the steel wheel assembly and a movable end that reciprocates and extends in a preset direction. The fixed end is located below the movable end. Thus, the drive component is installed upside down on the steel wheel assembly, and the fixed end of the drive component is located in the low position region of the steel wheel assembly. This allows the displacement movement areas of the rocker arm and trimmer to avoid the installation areas of the relatively upper vibrating motor, roller shaft, and other related components in the steel wheel assembly. This prevents interference between the drive component, rocker arm, and trimmer and other components of the steel wheel assembly, making the installation of the trimmer assembly on the steel wheel assembly more compact, saving installation space, and effectively reducing the assembly difficulty of the trimmer assembly on small road rollers. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 This is a schematic diagram of the structure of the road roller in the embodiments of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the trimmer in a non-operating position in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the trimming component in the working position in an embodiment of this application;

[0029] Figure 4 This is a side sectional view of the trimming part in an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the rocker arm in an embodiment of this application;

[0031] Figure 6 for Figure 4 Schematic diagram of the structure of the dressing wheel;

[0032] Figure 7 for Figure 4 A schematic diagram of the dressing wheel in another embodiment;

[0033] Figure 8 for Figure 1 A schematic diagram of the dressing wheel of a medium roller when it is in the working position.

[0034] Explanation of reference numerals in the attached figures

[0035] 100. Installation guard plate; 101. Limiting part; 1011. Mounting platform; 1012. Limiting stop;

[0036] 200. Driving component; 201. Fixed end; 202. Movable end; 203. First hinge point; 204. Second hinge point;

[0037] 300. Rocker arm; 301. Bearing housing; 302. Injector head;

[0038] 400. Dressing wheel; 401. Mounting hole; 402. Shaft; 403. Fastener; 404. Tapered roller bearing; 405. Round nut;

[0039] 500. Steel wheel assembly; 501. Sensor; 502. Steel wheel body; 503. Wheel axle; 504. Fork foot.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] As described in the background section, after the asphalt pavement is compacted by the two steel wheels of a road roller, the road needs to be trimmed using the trimming components of the road roller.

[0043] In related technologies, the dressing assembly of a road roller typically includes a hydraulic cylinder and a trimming wheel. The hydraulic cylinder drives the trimming wheel to descend and contact the road surface, where it trims and shapes the road surface. However, for some small road rollers with smaller steel drum diameters, the long stroke of the hydraulic cylinder limits the installation space for both the hydraulic cylinder and the trimming wheel. This can cause the hydraulic cylinder to interfere with components such as the roller shaft and vibratory motor, affecting the installation of the dressing assembly and making its assembly on the road roller more difficult.

[0044] Based on the above description, one or more embodiments of this application provide a road roller. The drive component has a fixed end disposed on the steel wheel assembly and a movable end that reciprocates and extends in a preset direction. The fixed end is located below the movable end. Thus, the drive component is installed upside down on the steel wheel assembly. The fixed end of the drive component is located in the low position region of the steel wheel assembly, so that the displacement range of the rocker arm and trimmer avoids the installation area of ​​the relatively upper vibration motor, roller shaft and other related components in the steel wheel assembly. This avoids interference between the drive component, rocker arm and trimmer and other components of the steel wheel assembly, making the installation of the trimmer assembly on the steel wheel assembly more compact, which helps to save installation space and effectively reduces the assembly difficulty of the trimmer assembly on small road rollers.

[0045] The following description, in conjunction with the accompanying drawings, describes the road roller according to an embodiment of this application.

[0046] like Figure 1 As shown, the road roller in this embodiment of the application includes a steel wheel assembly 500, a drive component 200, a rocker arm 300, and a trimmer.

[0047] The drive unit 200 has a fixed end 201 disposed on the steel wheel assembly 500 and a movable end 202 that reciprocates and extends in a preset direction. The fixed end 201 is located below the movable end 202. The rocker arm 300 is rotatably disposed on the steel wheel assembly 500, and one end of the rocker arm 300 is hinged to the movable end 202. The trimming component is hinged to the other end of the rocker arm 300. The trimming component is used to perform road edge trimming operations. The trimming component is configured such that when the movable end 202 drives the rocker arm to swing relative to the steel wheel assembly 500, it is driven by the rocker arm to rise and fall relative to the steel wheel assembly 500.

[0048] As can be seen from the above description, in the road roller of this application embodiment, the fixed end 201 of the drive component 200 is located below the movable end 202. The fixed end 201 does not actually occupy the upper space of the steel wheel assembly 500. The movable end 202 is hinged to the rocker arm 300, and the rocker arm 300 can be used to drive the trimming component to move up and down relative to the steel wheel assembly 500. The linkage structure of the rocker arm 300 and the trimming component converts the short-stroke extension and retraction of the drive component 200 into the lifting and lowering of the trimming component. This allows the displacement range of the rocker arm 300 and the trimming component to avoid the installation area of ​​the relatively upper vibration motor, drum shaft and other related components in the steel wheel assembly 500. This avoids interference between the drive component 200, the rocker arm 300 and the trimming component and other components of the steel wheel assembly 500. The installation of the trimming component on the steel wheel assembly 500 is more compact, which helps to save installation space and effectively reduces the assembly difficulty of the trimming component on the small road roller.

[0049] It should be noted that, in addition to the components mentioned in the embodiments of this application, the road roller should also include other related equipment components for completing normal operations. These equipment components can adopt the installation components of road rollers in related technologies, which will not be described in detail in the embodiments of this application. The trimming components in the embodiments of this application include related components for trimming the road surface, including the mounting guard plate 100, drive component 200, rocker arm 300, and trimming component.

[0050] In some embodiments, the steel wheel assembly 500 includes a steel wheel body 502 and an axle 503 passing through the steel wheel body 502, with the fixed end 201 and the rocker arm 300 both located below the axis of the axle 503.

[0051] In the above embodiments, a vibration motor, drive sprocket and other components are usually installed above the axis of the wheel axle 503. By placing the fixed end 201 of the drive component 200 and the rocker arm 300 below the axis of the wheel axle 503, the space below the steel wheel body 502 can be utilized, avoiding space constraints on the drive component 200 and rocker arm 300 during installation. This provides a certain displacement space for the movable end 202 of the subsequent drive component 200, reducing the overall assembly difficulty.

[0052] Here, since the rocker arm 300 itself is driven by the movable end 202 of the drive member 200 to swing, the rocker arm 300 is located below the axis of the wheel axle 503. This means that the motion envelope of the rocker arm 300 is located below the axis of the wheel axle 503. This design can prevent the rocker arm 300 from excessively encroaching on the upper space and interfering with components such as the vibration motor.

[0053] like Figure 1 and Figure 2 As shown in the embodiment of this application, the road roller also includes a fork foot 504 and a mounting guard plate 100. The fork foot 504 is connected to the steel wheel body 502 and is used to connect the frame of the road roller. The mounting guard plate 100 is located on one side of the steel wheel body 502. The mounting guard plate 100 and the fork foot 504 are connected by fasteners 403 that pass through both of them. The drive component 200, rocker arm 300 and trimming component are all located on the mounting guard plate 100.

[0054] In the above embodiments, the fork 504 is also referred to as the support frame or swing frame of the roller. The fork 504 bears the weight and working reaction force of the steel wheel body 502 and transmits the excitation force of the vibratory roller to the frame. Here, the fork 504 can be the support frame component on the vibratory roller in related technologies.

[0055] In the above embodiments, the mounting guard plate 100 serves as the mounting base for the drive component 200, rocker arm 300, and trimming component, allowing them to form a pre-assembled structure. The mounting guard plate 100, drive component 200, rocker arm 300, and trimming component can be assembled and disassembled as a whole on the fork 504, eliminating the need to disassemble each component individually and enhancing the ease of disassembly for the trimming components. Furthermore, when it is necessary to replace the trimming component, it can be directly disassembled. Since the mounting guard plate 100, drive component 200, and rocker arm 300 are all located on the side end face of the steel wheel body 502, i.e., inside the outer contour line of the steel wheel body 502, they do not affect the normal edge compaction operation of the road roller, thus improving the flexibility of selecting trimming components for the road roller.

[0056] like Figure 2 and Figure 3 As shown, in some embodiments, the mounting guard plate 100 is provided with a limiting part 101, which is close to the movable end 202 and located on the swing path of the rocker arm 300. The limiting part 101 is configured to block and limit the swing amplitude of the rocker arm 300 to limit the descent position of the trimmer.

[0057] In the above embodiment, the limiting part 101 includes a mounting platform 1011 provided on the mounting guard plate 100, and a limiting stop 1012 passing through the mounting platform 1011. The length of the limiting stop 1012 is adjustable along the direction toward the movable end 202.

[0058] Specifically, the mounting platform 1011 and the mounting guard plate 100 can be welded together or connected by bolts that pass through both. Generally, the mounting platform 1011 is located at the critical end of the swing path of the rocker arm 300. The mounting platform 1011 is used to ensure that the rocker arm 300 triggers the limit switch at the extreme position without interfering with the normal swing of the rocker arm 300, thus preventing the rocker arm 300 from swinging excessively and damaging the drive component 200.

[0059] by Figure 2 Taking the direction shown as an example, the limiting part 101 is located above the rocker arm 300. When the movable end 202 of the driving member 200 extends, the rocker arm 300 is driven by the movable end 202 to rotate counterclockwise. When the rocker arm 300 rotates to a certain angle, it is stopped by the limiting part 101, which prevents the rocker arm 300 from rotating further. This means that the trimming part cannot continue to descend. When the rocker arm 300 swings excessively due to a sudden impact (such as the trimming part hitting the curb), the limiting stop 1012 achieves instantaneous rigid locking of the rocker arm 300 through physical collision, cutting off the overload force transmission path of the trimming part and protecting the hinge point of the rocker arm 300 and the driving member 200 from damage.

[0060] As an alternative implementation, the limiting stop 1012 is threadedly connected to the mounting platform 1011, and the limiting stop 1012 is provided with a buffer pad on the side facing the movable end 202.

[0061] In the above embodiment, the mounting platform 1011 is provided with an internal threaded hole, and the limiting stop 1012 is a bolt that is threadedly engaged with the internal threaded hole. The length of the limiting stop 1012 can be adjusted by rotating it.

[0062] When the limit stop 1012 is a bolted component, a self-locking bolt from the relevant technology should be selected to prevent external vibration from affecting the set length of the limit stop 1012. The buffer pad can be made of a material with a certain degree of elasticity, such as oil-resistant and anti-aging polyurethane material. The buffer pad can absorb the impact energy when the rocker arm 300 impacts the limit stop 1012, preventing the movable end 202 of the drive component 200 from being rigidly impacted by the limit stop 1012 and affecting the normal telescopic movement.

[0063] For different construction scenarios, such as trimming of shallow asphalt pavement or compaction of deep subgrade, the adjustment of the lowering height of the trimming component is inconvenient. By changing the length of the limit stop 1012, the maximum swing angle of the rocker arm 300 can be dynamically controlled, allowing the trimming component to flexibly lower to different heights, thereby accurately matching different trimming depth requirements and improving the adaptability of the roller trimming components.

[0064] It should be noted that in this embodiment, the driving component 200 can be a linear drive component from the related art, such as an electric actuator, a hydraulic cylinder, or a pneumatic cylinder. Here, in this embodiment, a hydraulic cylinder is used.

[0065] Depend on Figure 2 It can also be seen that the hinge point between the fixed end 201 of the drive component 200 and the mounting guard plate 100 is the first hinge point 203, which is located at the lower edge of the mounting guard plate 100. The hinge point between the movable end 202 of the drive component 200 and the rocker arm 300 is the second hinge point 204, which is located at the upper edge of the mounting guard plate 100 and the rocker arm 300. This design can optimize the force transmission path of the drive component 200, so that the movable end 202 can drive the rocker arm 300 to swing at a large angle with a small displacement length, further reducing the space occupied by the dressing component on the steel wheel assembly 500.

[0066] like Figure 4 and Figure 5As shown, in some embodiments, the dressing component includes a dressing wheel 400 and a rotating shaft 402 passing through the dressing wheel 400. A tapered roller bearing 404 is provided on the rotating shaft 402. A bearing seat 301 is provided on the rocker arm 300, and the bearing seat 301 is connected to the tapered roller bearing 404 so that the rocker arm 300 and the dressing wheel 400 are hinged.

[0067] In the above embodiments, the dressing wheel 400 has a through mounting hole 401 at its center. The shaft 402 and the dressing wheel 400 are connected by fasteners 403 that share the mounting hole 401. During operation, the radial load of the dressing wheel 400 is transmitted to the shaft 402 through the tapered roller bearing 404. The axial impact force is guided from the tapered end of the tapered roller bearing 404 to the end face of the bearing seat 301 of the rocker arm 300, thus optimizing the force transmission path of the dressing wheel 400 and making the connection between the dressing wheel 400 and the rocker arm 300 more stable and reliable. Furthermore, in some embodiments, a round nut 405 and a retaining washer are fitted on one end of the shaft 402. The round nut 405 and the retaining washer can adjust the axial clearance of the tapered roller bearing 404 during installation and also serve as axial preload.

[0068] In the above embodiments, the dressing wheel 400 is a cutting edge wheel, a beveling edge wheel, or a flattening edge wheel. Figure 6 The dressing wheel 400 is a cutting wheel. Figure 7 The dressing wheel 400 is a bevel-pressing wheel. Different types of dressing wheels 400 can be flexibly replaced for different dressing needs. This will not be described in detail in the embodiments of this application.

[0069] like Figure 8 As shown, in some embodiments, the road roller further includes a spray head 302, a sensor 501, and an adjusting member. The spray head 302 is mounted on the rocker arm 300 and is used to spray water onto the trimmer. The sensor 501 is mounted on the steel wheel assembly 500 and is used to sense the position of the trimmer, issuing a non-operation signal when the trimmer is in an elevated position; and / or, the sensor 501 issues an operation signal when the trimmer is in a lowered position. The adjusting member is connected to both the spray head 302 and the sensor 501, and is configured to, upon receiving the operation signal from the sensor 501, adjust the spray head 302 to spray water onto the trimmer; and / or, upon receiving the non-operation signal from the sensor 501, adjust the spray head 302 to stop spraying water onto the trimmer.

[0070] In the above embodiment, the spray head 302 is mounted on the rocker arm 300, and the supply line of the spray head 302 is connected to the water tank of the road roller. The spray head 302 swings synchronously with the rocker arm 300, thus the spray head 302 and the dressing wheel 400 are actually in a relatively stationary position. This design ensures that the spray head 302 is always facing the dressing wheel 400, maintaining the optimal spray distance and angle, facilitating the spraying of liquid onto the dressing wheel 400 by the spray head 302. The spraying of liquid onto the dressing wheel 400 by the spray head 302 can promptly clean the asphalt and mud residue on the dressing wheel 400, preventing the dressing wheel 400 from sticking and affecting the dressing effect. The sensor 501 is fixed to a static position of the steel wheel assembly 500, such as the fork 504, and the sensor 501 is prevented from causing cable entanglement due to the swinging of the rocker arm 300.

[0071] The sensor 501 can be located at either the upper limit position or the lower limit position of the dressing wheel 400. The sensor 501 can be an infrared sensor or a physical contact microswitch, as long as it can detect the position of the dressing wheel. This embodiment does not impose an absolute limitation on this. Furthermore, a sensor 501 can be provided at both the upper limit position and the lower limit position of the dressing wheel 400 to more accurately determine the position of the dressing wheel 400.

[0072] In an alternative embodiment, the dressing wheel 400 is driven by the rocker arm 300 to rise to its limit position. The sensor 501 determines that the dressing wheel 400 is in an inactive state and sends a non-operation signal. After receiving the non-operation signal, the adjusting component cuts off the liquid circuit of the spray head 302, causing the spray head 302 to stop spraying liquid onto the dressing wheel 400. The dressing wheel 400 is driven by the rocker arm 300 to fall to its limit position. The sensor 501 determines that the dressing wheel 400 is in an operational state and sends an operational signal. After receiving the operational signal, the adjusting component turns on the liquid circuit of the spray head 302, causing the spray head 302 to start spraying liquid onto the dressing wheel 400.

[0073] It should be noted that in this embodiment, the adjusting element can be a relay or a programmable logic controller from the related technology, as long as it can respond to the signal of the sensing element 501 and adjust the spraying state of the spray head 302 accordingly.

[0074] In this embodiment of the application, the working state of the trimming wheel 400 refers to the state in which the trimming wheel 400 is lowered to the limit position and trims or presses the edge of the road surface, and the non-working state of the trimming wheel 400 refers to the state in which the trimming wheel 400 is raised to the limit position and stored in the steel wheel assembly 500.

[0075] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0076] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A road roller, characterized in that, include: Steel wheel assembly; The driving component has a fixed end disposed on the steel wheel assembly and a movable end that reciprocates and extends in a preset direction, the fixed end being located below the movable end; A rocker arm is rotatably mounted on the steel wheel assembly, and one end of the rocker arm is hinged to the movable end; A trimming component, hinged to the other end of the rocker arm, is used for trimming road edges; the trimming component is configured to be raised and lowered relative to the steel wheel assembly by the rocker arm when the movable end drives the rocker arm to swing relative to the steel wheel assembly.

2. The road roller according to claim 1, characterized in that, The steel wheel assembly includes a steel wheel body and an axle passing through the steel wheel body, with the fixed end and the rocker arm both located below the axis of the axle.

3. The road roller according to claim 2, characterized in that, Also includes: The fork legs are connected to the steel wheel body and are used to connect the frame of the road roller; A mounting guard plate is provided on one side of the steel wheel body. The mounting guard plate and the fork foot are connected by fasteners that pass through both of them. The drive component, the rocker arm, and the trimmer are all provided on the mounting guard plate.

4. The road roller according to claim 3, characterized in that, The mounting plate is provided with a limiting part, which is close to the movable end and located on the swing path of the rocker arm. The limiting part is configured to block and limit the swing amplitude of the rocker arm to limit the descent position of the trimmer.

5. The road roller according to claim 4, characterized in that, The limiting part includes a mounting platform provided on the mounting guard plate and a limiting stop passing through the mounting platform. The length of the limiting stop is adjustable in the direction toward the movable end.

6. The road roller according to claim 5, characterized in that, The limiting stop is threadedly connected to the mounting platform, and a buffer pad is provided on the side of the limiting stop facing the movable end.

7. The road roller according to any one of claims 1 to 6, characterized in that, The dressing component includes a dressing wheel and a rotating shaft through which the dressing wheel passes, and a tapered roller bearing is provided on the outside of the rotating shaft; The rocker arm is provided with a bearing seat, which is connected to the tapered roller bearing so that the rocker arm and the dressing wheel are hinged.

8. The road roller according to claim 7, characterized in that, The dressing wheel is a cutting edge wheel, a beveling edge wheel, or a flattening edge wheel.

9. The road roller according to any one of claims 1 to 6, characterized in that, Also includes: A spray head is provided on the rocker arm, and the spray head is used to spray water onto the trimming part; A sensor is disposed on the steel wheel assembly. The sensor is used to sense the position of the dressing member and to issue a non-operation signal when the dressing member is in the raised position; and / or, the sensor issues an operation signal when the dressing member is in the lowered position. An adjusting member is connected to both the spray head and the sensing element. The adjusting member is configured to, upon receiving a working signal from the sensing element, adjust the spray head to spray water onto the trimming part; and / or, upon receiving a non-working signal from the sensing element, adjust the spray head to stop spraying water onto the trimming part.

10. The road roller according to any one of claims 1 to 6, characterized in that, The driving component is an electric push rod, a hydraulic cylinder, or a pneumatic cylinder.

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