Road guardrail cleaning device

Abstract

The utility model relates to the technical field of environmental sanitation equipment, and provides a road guardrail cleaning device which comprises a first base connected to the front end of a vehicle; a support arm system comprising: a first end; the second end is hinged to the first base; the cleaning mechanism is arranged at the first end of the supporting arm system, the cleaning mechanism can be driven by the supporting arm system to move, and the cleaning mechanism comprises a roller brush used for cleaning a road guardrail; the spray head assemblies are arranged on the two sides of the roller brush and used for cleaning the road guardrails; the distance measuring sensor is arranged at the first end of the support arm system or the cleaning mechanism, can be electrically connected with the vehicle-mounted controller and is used for detecting and feeding back the distance between the roller brush and the road guardrail to the vehicle-mounted controller; according to the utility model, the vehicle does not need to be customized and refitted and can be quickly matched with a watering cart or a cleaning vehicle; the position of the cleaning mechanism can be adjusted through driving of the support arm system, so that the roller brush covers guardrails with different heights and widths, and the working efficiency and the cleaning quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of sanitation equipment technology, and in particular to a road guardrail cleaning device. Background Technology

[0002] In modern urban transportation infrastructure, road guardrails serve as crucial facilities for ensuring traffic safety, making their cleaning and maintenance essential. With the acceleration of urbanization and the continuous growth of traffic flow, the surface of road guardrails easily accumulates dirt, oil stains, vehicle exhaust pollutants, and graffiti, which not only affects the aesthetics of the city but may also reduce the lifespan and safety performance of the guardrails.

[0003] Most existing road guardrail cleaning devices employ a single cleaning method, such as relying solely on rotating brushes or spraying from a single nozzle, which is insufficient to handle different types of stains. Furthermore, existing technologies also exhibit significant shortcomings in terms of adaptability and flexibility. Traditional cleaning devices often utilize fixed structures, making it difficult to adapt to guardrails of varying heights, widths, and shapes, and thus failing to meet high standards of municipal sanitation requirements.

[0004] In addition, existing road guardrail cleaning devices mostly rely on manual adjustment of the distance between the brush and the guardrail, which cannot adapt to the dynamic changes during vehicle movement, affecting the cleaning effect, and may also cause damage to the guardrail or wear on the brush due to excessive pressure. Utility Model Content

[0005] This utility model provides a road guardrail cleaning device to solve the defects of poor equipment adaptability and low level of intelligence in the prior art, realize adaptive operation for different types of guardrails, and achieve fully automated control of the entire process, thereby improving the efficiency of road guardrail cleaning.

[0006] This utility model provides a road guardrail cleaning device, comprising:

[0007] The first base is connected to the front of the vehicle;

[0008] Outrigger system, including:

[0009] First end;

[0010] The second end is hinged to the first base;

[0011] A cleaning mechanism is disposed at the first end of the outrigger system. The cleaning mechanism is movable under the drive of the outrigger system. The cleaning mechanism includes:

[0012] Roller brushes are used for cleaning road railings;

[0013] The nozzle assembly is disposed on both sides of the roller brush and is used to clean the road guardrail;

[0014] A distance sensor, located at the first end of the outrigger system or the cleaning mechanism, is electrically connected to the vehicle controller and is used to detect and provide feedback to the vehicle controller on the distance between the roller brush and the road guardrail.

[0015] According to the road guardrail cleaning device provided by this utility model, the cleaning mechanism further includes:

[0016] The second base is connected to the first end of the support arm system, and the roller brush is rotatably mounted on the second base.

[0017] According to the present invention, a road guardrail cleaning device is provided, the support arm system comprising:

[0018] The first arm has its first end hinged to the first base;

[0019] The second arm has its second end hinged to the second base;

[0020] An adapter frame is disposed between the first support arm and the second support arm, and the second end of the first support arm and the first end of the second support arm are both hinged to the adapter frame;

[0021] A first driving element is disposed between the first support arm and the first base and is electrically connected to the vehicle controller, for driving the first support arm to swing about its hinge point in a first plane.

[0022] A second drive unit is disposed between the second support arm and the adapter frame and is electrically connected to the vehicle controller, for driving the second support arm to swing about its hinge point in a second plane, the second plane being perpendicular to the first plane.

[0023] According to the road guardrail cleaning device provided by this utility model, it further includes:

[0024] A first connecting rod is connected to one side of the second base, and a first roller is rotatably connected to the free end of the first connecting rod;

[0025] The second link is connected to the other side of the second base. The free end of the second link is rotatably connected to the second roller, and the central axes of the first roller, the second roller and the roller brush are parallel to each other.

[0026] According to the present invention, a road guardrail cleaning device is provided, wherein the free ends of the first connecting rod and the second connecting rod are each provided with a roller bracket, the roller bracket is provided with a rotating shaft, and the center holes of the first roller and the second roller are provided axially, the center holes being adapted to the rotating shaft; and a pressure sensor is provided on the inner surface of the center hole or the outer surface of the rotating shaft, the pressure sensor being electrically connected to the vehicle controller.

[0027] According to the road guardrail cleaning device provided by this utility model, the nozzle assembly includes at least:

[0028] The first nozzle is mounted on the first connecting rod and is connected to an external water tank via a first pipeline.

[0029] The second nozzle is mounted on the second connecting rod. The second nozzle is connected to an external water tank through a second pipeline. When cleaning the guardrail, the second nozzle is positioned in front of the roller brush along the vehicle's travel direction.

[0030] According to the road guardrail cleaning device provided by this utility model, the second base is provided with a cavity, and the cavity contains:

[0031] A drive motor, the main shaft of which is connected to the central shaft of the roller brush, and the drive motor is electrically connected to the vehicle controller;

[0032] A first hydraulic pump is connected to the first pipeline and electrically connected to the vehicle controller.

[0033] The second hydraulic pump is connected to the second pipeline and is electrically connected to the vehicle controller.

[0034] According to the road guardrail cleaning device provided by this utility model, it further includes:

[0035] A cleaning agent container is disposed on top of the second base. The cleaning agent container is connected to the second hydraulic pump through a third pipeline and is used to supply cleaning agent to the second nozzle.

[0036] According to the road guardrail cleaning device provided by this utility model, it further includes:

[0037] A water collection tank is located at the bottom of the first nozzle and connected to the second support arm. A filter structure is installed inside the water collection tank.

[0038] A third hydraulic pump is installed in the cavity and electrically connected to the vehicle controller. The inlet of the third hydraulic pump is connected to the water collection tank through a pipeline, and the outlet of the third hydraulic pump is connected to the external water tank through a pipeline.

[0039] According to the present invention, a road guardrail cleaning device includes a roller brush comprising:

[0040] Flexible bristles;

[0041] Rigid bristles, wherein the flexible bristles and the rigid bristles are staggered along the axial direction of the roller brush, and the area of ​​the rigid bristles is 1 / 3 to 1 / 2 of the area of ​​the flexible bristles.

[0042] This utility model provides a road guardrail cleaning device, including a first base, a support arm system, a cleaning mechanism, and a distance measuring sensor. This utility model has strong adaptability. The first base is connected to the front of the vehicle, requiring no customized modification of the vehicle, and can be quickly adapted to more than 90% of sprinkler trucks or cleaning vehicles. The second end of the support arm system is hinged to the first base, and the first end carries the cleaning mechanism. The position of the cleaning mechanism can be adjusted by hydraulic or electric drive, so that the roller brush can cover guardrails of different heights and widths, adapting to different scenarios such as highways and urban roads. Compared with traditional fixed cleaning devices, it expands the working range and improves the working efficiency. The nozzle assembly is located on both sides of the roller brush, and the spray range completely covers the working width of the brush, ensuring that no stains remain after rinsing. Distance sensors (such as laser or infrared sensors) detect the distance between the roller brush and the guardrail in real time. The distance is compared with a preset value, such as 30cm, by the vehicle controller, and the distance between the vehicle and the guardrail or the support arm system is adjusted to ensure that the brush and the guardrail always maintain the optimal contact distance. This avoids brush wear due to being too close or reduced cleaning effect due to being too far away. Compared with manual visual adjustment, this improves cleaning quality, avoids excessive pressure of the brush on the guardrail, protects the surface coating of the guardrail from damage, and extends the service life of the brush. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 This is an axonometric view of a road guardrail cleaning device provided in an embodiment of this utility model.

[0045] Figure 2 This is a front view of a road guardrail cleaning device provided in an embodiment of this utility model.

[0046] Figure label:

[0047] 1. First base; 2. Roller brush; 3. Second base; 4. First support arm; 5. Second support arm; 6. Adapter frame; 7. First drive component; 8. Second drive component; 9. First connecting rod; 10. First roller; 11. Second connecting rod; 12. Second roller; 13. First nozzle; 14. Second nozzle;

[0048] 15. Connecting ear. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0050] The following is combined Figures 1-2 This invention describes a road guardrail cleaning device.

[0051] This utility model provides a road guardrail cleaning device, including: a first base 1, a support arm system, a cleaning mechanism, and a distance measuring sensor.

[0052] The first base 1 is connected to the front of a vehicle, such as a water truck, and can be attached to the front bumper in a detachable manner, eliminating the need for vehicle customization and improving versatility. The outrigger system includes a first end and a second end, with the second end hinged to the first base 1. A cleaning mechanism is located at the first end of the outrigger system and can move under the drive of the outrigger system. The cleaning mechanism includes a roller brush 2 and a nozzle assembly. The roller brush 2 is used to clean road guardrails; the nozzle assembly is located on both sides of the roller brush 2 for cleaning the road guardrails. The system is driven by the outrigger system, enabling the roller brush 2 to contact the road guardrail, sweep it, and then rinse it with the nozzle assembly to complete the cleaning process. A distance sensor is located at the first end of the outrigger system or the cleaning mechanism and can be electrically connected to the vehicle controller to detect and report the distance between the roller brush 2 and the road guardrail. For example, the distance sensor is connected to the vehicle controller via a CAN bus, and the vehicle controller receives the distance measurement value and adjusts the distance between the roller brush 2 and the road guardrail according to a preset threshold, forming a closed-loop control.

[0053] As can be seen from the above solution, this utility model has strong adaptability. The first base 1 is connected to the front of the vehicle and adopts a detachable installation method such as a flange or quick-connect structure, which does not require customized modification of the vehicle and can be quickly adapted to more than 90% of sprinkler trucks or cleaning vehicles. The second end of the support arm system is hinged to the first base 1, and the first end carries the cleaning mechanism. The position of the cleaning mechanism can be adjusted by hydraulic or electric drive so that the roller brush 2 can cover guardrails of different heights and widths, adapting to different scenarios such as highways and urban roads. Compared with traditional fixed cleaning devices, it expands the working range and improves the working efficiency. The nozzle assembly is designed with... Placed on both sides of the roller brush 2, the spray range completely covers the working width of the brush, ensuring no stains remain after rinsing. Distance sensors, such as laser or infrared sensors, detect the distance between the roller brush 2 and the guardrail in real time. The distance is compared with a preset value, such as 30cm, by the vehicle controller, and the distance between the vehicle and the guardrail or the support arm system is adjusted to ensure that the brush and the guardrail always maintain the optimal contact distance. This avoids brush wear due to being too close or reduced cleaning effect due to being too far away. Compared with manual visual adjustment, this improves cleaning quality, avoids excessive pressure of the brush on the guardrail, protects the surface coating of the guardrail from damage, and extends the service life of the brush.

[0054] Preferably, the cleaning mechanism, outrigger system, and ranging sensor can be modularly integrated, with each component connected via standardized interfaces, such as flange mounting and quick-connect water pipes. The water pipes can be connected to the side outlet of the sprinkler truck. The power supply for this device can be achieved by connecting it to the ACC interface of the sprinkler truck. Faulty modules can be quickly replaced during maintenance. The ranging sensor supports firmware upgrades, such as via a USB interface, which can optimize the ranging algorithm. The modular design reduces the total life cycle cost and adapts to the long-term use needs of sanitation equipment.

[0055] like Figures 1-2 As shown, the cleaning mechanism also includes a second base 3, which is connected to the first end of the support arm system, and the roller brush 2 is rotatably mounted on the second base 3.

[0056] In this embodiment, the outrigger system includes a first outrigger 4, a second outrigger 5, a transition frame 6, a first drive member 7, and a second drive member 8. The first end of the first outrigger 4 is hinged to the first base 1; the second end of the second outrigger 5 is hinged to the second base 3; the transition frame 6 is disposed between the first outrigger 4 and the second outrigger 5, and the second end of the first outrigger 4 and the first end of the second outrigger 5 are both hinged to the transition frame 6; the first drive member 7 is connected between the first outrigger 4 and the first base 1, and is used to drive the first outrigger 4 to swing around its hinge point in a first plane; the second drive member 8 is connected between the second outrigger 5 and the transition frame 6, and is used to drive the second outrigger 5 to swing around its hinge point in a second plane, the second plane being perpendicular to the first plane, wherein the first plane is parallel to the ground.

[0057] Optionally, the first driving component 7 and the second driving component 8 can be any of an electric cylinder, a pneumatic cylinder or a hydraulic cylinder, preferably a hydraulic cylinder. The first arm 4 can be horizontally swung and the second arm 5 can be vertically pitched by hydraulic drive, so that the roller brush 2 can cover guardrails of different heights and widths and adapt to different scenarios such as highways and urban roads.

[0058] like Figure 2 As shown, one end of the first driving member 7 is hinged to the first base 1, and the other end is hinged to the first support arm 4. By extending linearly, the first support arm 4 can be driven to swing around its hinge point along the horizontal plane, pushing the second support arm 5 and the second base 3 outward. One end of the second driving member 8 is hinged to the adapter frame 6, and the other end is hinged to the second support arm 5. By extending linearly, the second support arm 5 can be driven to move up and down around its hinge point, adjusting the height of the second base 3. A connecting ear 15 is provided at the end of the first support arm 4 away from the first base 1. The connecting ear 15 is rotatably connected to the adapter frame 6. A third driving member can also be provided between the adapter frame 6 and the first support arm 4. By extending the third driving member, the angle between the first support arm 4 and the second support arm 5 can be automatically adjusted. Alternatively, a ring of through holes can be provided around the adapter connection of the connecting ear 15, and a positioning hole can be provided on the surface of the connection of the adapter frame 6. A pin can be inserted into the corresponding through hole and positioning hole to lock the angle between the first support arm 4 and the second support arm 5.

[0059] Furthermore, such as Figure 1 As shown, it also includes a first connecting rod 9 and a second connecting rod 11. The first connecting rod 9 is connected to one side of the second base 3, and the free end of the first connecting rod 9 is rotatably connected to a first roller 10. The second connecting rod 11 is connected to the other side of the second base 3, and the free end of the second connecting rod 11 is rotatably connected to a second roller 12. The central axes of the first roller 10, the second roller 12 and the roller brush 2 are parallel to each other and are all perpendicular to the ground.

[0060] This setup ensures optimal working distance between the roller brush 2 and the guardrail by rolling the rollers into contact with the guardrail. During normal vehicle operation, the two rollers roll against the surface of the road guardrail at the front and rear of the roller brush 2, ensuring uniform contact along the length of the guardrail and achieving purely mechanical limiting.

[0061] In this embodiment, the first link 9 and the second link 11 have an included angle. By adjusting the included angle between the two, the roller brush 2 can be at different distances from the guardrail when the roller contacts the guardrail. The first link 9 and the second link 11 can be made of elastic materials such as spring steel, which can absorb the impact force through the elastic deformation of the link when the vehicle bumps or the guardrail surface is uneven. The angle can be automatically adjusted according to the undulation of the guardrail surface to adapt to different types of guardrails and installation tilt angles. Compared with traditional rigid installation cleaning devices, this improves versatility.

[0062] Preferably, the roller structure is made of polyurethane wear-resistant material, and the surface is grooved to increase friction.

[0063] Furthermore, both the free ends of the first link 9 and the second link 11 are provided with roller brackets, and the roller brackets are provided with rotating shafts. The center of the first roller 10 and the second roller 12 are provided with a central hole along the axial direction, and the central hole is adapted to the rotating shaft. A pressure sensor is provided on the inner surface of the central hole or the outer surface of the rotating shaft, and the pressure sensor is electrically connected to the vehicle controller.

[0064] This setup creates a pressure feedback mechanism. When the contact pressure between the roller and the guardrail exceeds a preset value, such as 30N, the pressure sensor detects this pressure value and sends a signal to the vehicle controller. By adjusting the vehicle or outrigger system, the distance between the roller brush 2 and the guardrail is increased, thereby reducing the contact pressure between the roller brush 2 and the guardrail and preventing excessive squeezing that could damage the guardrail.

[0065] In this embodiment, the nozzle assembly includes at least a first nozzle 13 and a second nozzle 14. The first nozzle 13 is mounted on the first connecting rod 9 and is connected to an external water tank via a first pipe. The second nozzle 14 is mounted on the second connecting rod 11 and is connected to an external water tank via a second pipe. When cleaning the guardrail, the second nozzle 14 is positioned in front of the roller brush 2 along the vehicle travel direction.

[0066] With this setup, the second nozzle 14 is positioned in front of the roller brush 2 along the vehicle's travel direction, while the first nozzle 13 is positioned behind it, forming a standardized cleaning process of pre-wetting, brushing, and rinsing. When the guardrail has undulating waves or an angle, the connecting rod can automatically adjust the spray angle of the nozzle to ensure that the spray direction is always perpendicular to the guardrail surface. This solves the problem of spray deviation caused by traditional fixed nozzles. The second nozzle 14 in front can first spray cleaning agents such as alkaline solutions to soften dirt, dust, and oil stains on the guardrail surface; the roller brush 2 rotates and rubs to remove stains; and the first nozzle 13 in the rear sprays clean water to rinse away residue. Compared with a single nozzle, both cleaning efficiency and stain removal rate are improved.

[0067] Preferably, both the first nozzle 13 and the second nozzle 14 can be connected to the connecting rod via a quick-connect interface. The piping is hidden inside the connecting rod, and the exposed parts are protected by corrugated pipes. If a single nozzle fails, it can be replaced independently without disassembling the entire cleaning mechanism.

[0068] In this embodiment, the second base 3 is provided with a cavity, and a drive motor, a first hydraulic pump and a second hydraulic pump are provided in the cavity. The main shaft of the drive motor is connected to the central shaft of the roller brush 2, and the drive motor is electrically connected to the vehicle controller. The first hydraulic pump is connected to the first pipeline and is electrically connected to the vehicle controller. The second hydraulic pump is connected to the second pipeline and is electrically connected to the vehicle controller.

[0069] With this configuration, the first nozzle 13 and the second nozzle 14 are connected to an external water tank through independent pipelines and are driven independently by the first hydraulic pump and the second hydraulic pump, so that the spray pressure and flow rate of the two nozzles can be adjusted separately to adapt to different types of stains.

[0070] In this embodiment, a cleaning agent container is also included. The cleaning agent container is located on the top of the second base 3 (not shown in the figure). The cleaning agent container is connected to the second hydraulic pump through a third pipeline to provide cleaning agent to the second nozzle 14. The vehicle controller can dynamically adjust the output of the second hydraulic pump according to the data of the pressure sensor and the distance sensor to enhance the decontamination ability. A stainless steel filter screen can be installed at the inlet of the third pipeline to prevent impurities in the cleaning agent from clogging the nozzle. The cleaning agent container has a built-in liquid level sensor to monitor the liquid level in real time.

[0071] Furthermore, it also includes a water collection tank and a third hydraulic pump (not shown in the figure). The water collection tank is located at the bottom of the first nozzle 13 and connected to the second support arm 5. The water collection tank is equipped with a filtration structure. The filtration structure may include three layers of filtration, such as PP cotton filter element, activated carbon and precision filter screen, which can remove impurities such as mud and hair from the wastewater. The third hydraulic pump is located in the cavity. The inlet of the third hydraulic pump is connected to the water collection tank through a pipeline, and the outlet of the third hydraulic pump is connected to an external water tank through a pipeline. The filtered water is transported to the external water tank through the third hydraulic pump to form a closed water circulation loop. The water resource recycling rate of a single operation reaches 40%-60%, reducing costs and improving both economic and environmental benefits. A drain valve is installed at the bottom of the water collection tank to discharge impurities once a week.

[0072] In this embodiment, the roller brush 2 includes flexible bristles and rigid bristles. The flexible bristles can be nylon bristles, suitable for daily dust cleaning, while the rigid bristles can be steel wire bristles, suitable for stubborn stains or frost. The flexible and rigid bristles are staggered along the axial direction of the roller brush 2. The area of ​​the rigid bristles is 1 / 3 to 1 / 2 of the area of ​​the flexible bristles. The flexible and rigid bristles can be asymmetrically staggered along the roller axial direction, such as in a spiral or segmented arrangement, to avoid uneven cleaning caused by the concentration of the same type of bristles.

[0073] With this setup, one set of brushes can be adapted to various cleaning scenarios, replacing the tedious operation of replacing the entire brush in the traditional way, shortening the operation time, reducing the repetition rate of a single operation, and improving the quality of the operation. The area of ​​rigid bristles accounts for 1 / 3 to 1 / 2 of that of flexible bristles, which not only ensures the ability to remove stubborn stains, but also avoids excessive contact of rigid bristles that may cause damage to the guardrail.

[0074] This utility model embodiment also provides a water sprinkler truck equipped with the aforementioned road guardrail cleaning device, wherein the first base 1 is installed on the front bumper of the water sprinkler truck via a flange.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A road guardrail cleaning device, characterized in that, include: The first base (1) is connected to the front end of the vehicle; Outrigger system, including: First end; The second end is hinged to the first base (1); A cleaning mechanism is disposed at the first end of the outrigger system. The cleaning mechanism is movable under the drive of the outrigger system. The cleaning mechanism includes: Roller brush (2) is used for cleaning road guardrails; The nozzle assembly is disposed on both sides of the roller brush (2) for cleaning the road guardrail; A distance sensor, located at the first end of the outrigger system or the cleaning mechanism, is electrically connected to the vehicle controller and is used to detect and feed back the distance between the roller brush (2) and the road guardrail to the vehicle controller.

2. The road guardrail cleaning device according to claim 1, characterized in that, The cleaning mechanism also includes: The second base (3) is connected to the first end of the support arm system, and the roller brush (2) is rotatably mounted on the second base (3).

3. A road guardrail cleaning device according to claim 2, characterized in that, The outrigger system includes: The first arm (4) has its first end hinged to the first base (1). The second arm (5) has its second end hinged to the second base (3); The adapter (6) is disposed between the first support arm (4) and the second support arm (5), and the second end of the first support arm (4) and the first end of the second support arm (5) are both hinged to the adapter (6); The first drive member (7) is disposed between the first support arm (4) and the first base (1) and is electrically connected to the vehicle controller for driving the first support arm (4) to swing around its hinge point in a first plane. The second drive unit (8) is disposed between the second support arm (5) and the adapter frame (6) and is electrically connected to the vehicle controller for driving the second support arm (5) to swing about its hinge point in a second plane, the second plane being perpendicular to the first plane.

4. A road guardrail cleaning device according to claim 3, characterized in that, Also includes: The first link (9) is connected to one side of the second base (3), and the free end of the first link (9) is rotatably connected to the first roller (10). The second link (11) is connected to the other side of the second base (3). The free end of the second link (11) is rotatably connected to the second roller (12), and the central axes of the first roller (10), the second roller (12) and the roller brush (2) are parallel to each other.

5. A road guardrail cleaning device according to claim 4, characterized in that, Both the free end of the first connecting rod (9) and the free end of the second connecting rod (11) are provided with roller brackets. The roller brackets are provided with rotating shafts. The center of the first roller (10) and the second roller (12) are provided with a central hole along the axial direction. The central hole is adapted to the rotating shaft. A pressure sensor is provided on the inner surface of the central hole or the outer surface of the rotating shaft. The pressure sensor is electrically connected to the vehicle controller.

6. A road guardrail cleaning device according to claim 4, characterized in that, The nozzle assembly includes at least: The first nozzle (13) is mounted on the first connecting rod (9), and the first nozzle (13) is connected to the external water tank through the first pipeline; The second nozzle (14) is mounted on the second connecting rod (11). The second nozzle (14) is connected to the external water tank through the second pipeline. When cleaning the guardrail, the second nozzle (14) is located in front of the roller brush (2) along the vehicle travel direction.

7. A road guardrail cleaning device according to claim 6, characterized in that, The second base (3) is provided with a cavity, and the cavity contains: A drive motor, the main shaft of which is connected to the central shaft of the roller brush (2), and the drive motor is electrically connected to the vehicle controller; A first hydraulic pump is connected to the first pipeline and electrically connected to the vehicle controller. The second hydraulic pump is connected to the second pipeline and is electrically connected to the vehicle controller.

8. A road guardrail cleaning device according to claim 7, characterized in that, Also includes: A cleaning agent container is located on top of the second base (3). The cleaning agent container is connected to the second hydraulic pump through a third pipeline and is used to supply cleaning agent to the second nozzle (14).

9. A road guardrail cleaning device according to claim 7, characterized in that, Also includes: A water collection tank is located at the bottom of the first nozzle (13) and connected to the second support arm (5). A filter structure is provided inside the water collection tank. A third hydraulic pump is installed in the cavity and electrically connected to the vehicle controller. The inlet of the third hydraulic pump is connected to the water collection tank through a pipeline, and the outlet of the third hydraulic pump is connected to the external water tank through a pipeline.

10. A road guardrail cleaning device according to claim 1, characterized in that, The roller brush (2) includes: Flexible bristles; Rigid bristles, the flexible bristles and the rigid bristles are staggered along the axial direction of the roller brush (2), and the area of ​​the rigid bristles is 1 / 3 to 1 / 2 of the area of ​​the flexible bristles.

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