A municipal road guardrail cleaning device

Abstract

The utility model discloses a kind of municipal road guardrail cleaning devices, including machine body, cleaning mechanism and limiting mechanism, machine body bottom is equipped with brakeable moving wheel, middle is equipped with the guardrail passageway for guardrail to be equipped with;Cleaning mechanism is equipped in guardrail passageway both sides, including cleaning roller brush, support frame and driving motor, driving motor output shaft is connected with cleaning roller brush transmission, cleaning roller brush is installed to the position of machine body corresponding guardrail passageway both sides by support frame;Limiting mechanism is installed in machine body front and rear both ends, including limiting component, limiting component has the limiting roller and limiting support in guardrail passageway both sides, limiting roller can elastically extrude guardrail, to make guardrail always be located in the center position of guardrail passageway, and indirectly realize the limiting of machine body movement, avoid machine body to be off track.This cleaning device can be adapted to different specifications guardrail, improve work safety, realize water-saving pollution control, overall achieve efficient and thorough cleaning, satisfy municipal road guardrail maintenance diversification demand.

Description

Technical Field

[0001] This utility model belongs to the technical field of road guardrail cleaning equipment, specifically relating to a municipal road guardrail cleaning device. Background Technology

[0002] Municipal road guardrails are a core part of traffic infrastructure and require regular cleaning to ensure their aesthetics and lifespan. Long-term exposure can easily lead to the accumulation of dust and exhaust fumes, which not only disrupts the visual harmony of the road and accelerates coating corrosion, but may also breed bacteria or freeze at low temperatures, affecting the traffic environment.

[0003] Current cleaning methods have obvious shortcomings: manual cleaning requires wiping section by section, which is labor-intensive, inefficient, and the workers are in dangerous areas of the road, resulting in poor safety; although high-pressure water guns are slightly more efficient, they do not thoroughly clean the dirt in the gaps of guardrails, consume a lot of water, and the unorganized discharge of wastewater can easily pollute the road surface.

[0004] In summary, existing methods cannot meet the needs of municipal maintenance in terms of efficiency, safety, thoroughness of cleaning, and equipment adaptability. Therefore, it is urgent to develop a guardrail cleaning device that combines high-efficiency cleaning, safe positioning, and flexible mobility. Utility Model Content

[0005] To address the problems and shortcomings of the existing technology, this utility model provides a municipal road guardrail cleaning device that can adapt to guardrails of different specifications, improve operational safety, achieve water conservation and pollution control, and achieve efficient and thorough cleaning, thus meeting the diverse needs of municipal road guardrail maintenance.

[0006] This utility model is achieved through the following technical solution:

[0007] A municipal road guardrail cleaning device includes: a body, a cleaning mechanism, and a limiting mechanism.

[0008] The bottom of the machine is equipped with brakeable casters, and a guardrail passage is opened in the middle of the machine for guardrails to pass through.

[0009] The cleaning mechanism includes cleaning roller brushes, support frames, and drive motors located on both sides of the guardrail passage. The output shaft of the drive motor is connected to the cleaning roller brushes via a transmission connection. The cleaning roller brushes are installed on the machine body at the corresponding positions on both sides of the guardrail passage through the support frames.

[0010] The limiting mechanism includes limiting components installed at both ends of the machine body. The limiting components include limiting rollers and limiting brackets located on both sides of the guardrail passage. The limiting brackets have a sliding groove extending along the width of the guardrail passage. The two ends of the limiting rollers are installed to the limiting brackets through bearing seats that can slide along the sliding groove. A spring is installed between the bearing seats and the inner wall of the sliding groove near the outer side of the machine body, which is arranged along the length of the sliding groove. The limiting rollers on both sides of the guardrail passage can elastically compress the guardrail that passes through them through the elastic force of the spring.

[0011] The brakeable casters at the bottom of the machine allow the device to move flexibly to any cleaning area and precisely position itself during cleaning operations. This prevents the device from shifting due to slight unevenness of the road surface or vibration of the cleaning rollers, ensuring that the cleaning path perfectly matches the direction of the guardrail and improving the regularity of the cleaning trajectory. The guardrail channel in the middle of the machine allows the guardrail to pass through, enabling the cleaning rollers of the cleaning mechanism to clean both sides of the guardrail simultaneously. Compared to cleaning one side at a time, this significantly reduces the time required for each cleaning cycle and greatly improves the overall cleaning efficiency. At the same time, the channel structure can also provide initial restraint for the guardrail, reducing the relative displacement between the two during the cleaning process. The drive motor provides stable power to the cleaning roller brush through a transmission connection, ensuring that the cleaning roller brush always maintains a uniform speed and avoiding insufficient power that would reduce cleaning power. This allows for continuous and efficient removal of dust and exhaust fumes from the guardrail surface, ensuring stable cleaning results. The sliding groove in the limiting bracket provides sliding space for the bearing seat. Combined with the elastic force of the spring, the limiting rollers on both sides of the guardrail channel can adaptively adjust the spacing according to the actual width of the guardrail and fit tightly against the guardrail surface to form elastic compression. This structure is suitable for municipal guardrails of different widths and can absorb vibrations during the cleaning process through elastic buffering, reducing hard collisions between the cleaning device and the guardrail to protect the guardrail coating from scratches. At the same time, it maintains the relative stability between the machine body and the guardrail, preventing the cleaning roller brush from losing contact with the guardrail due to vibration and creating cleaning dead corners. It can also limit the movement of the machine body to prevent the machine body from shifting relative to the guardrail.

[0012] Furthermore, the limiting mechanism also includes a guide component, which is integrally formed with the limiting component. The guide component is located on the side of the limiting component away from the center of the machine body. The guide component includes guide rollers and guide brackets located on both sides of the guardrail passage. The connection structure between the guide rollers and the guide brackets is consistent with the connection structure between the limiting rollers and the limiting brackets. Along the direction closer to the center of the machine body, the distance between the two guide brackets on both sides of the guardrail passage gradually shortens, and the shortest value of this distance is equal to the distance between the two limiting brackets.

[0013] The guide component and the limiting component are integrally molded, eliminating the need for additional assembly and splicing, thus reducing installation errors between parts and improving overall structural stability. The integral molding also enhances the load-bearing capacity of the components, preventing loosening after long-term use and extending their service life. The guide component is located on the side of the limiting component furthest from the machine body center, and the spacing between the guide brackets on both sides of the guardrail channel gradually decreases towards the machine body center. This gradually decreasing spacing structure forms a "guide channel" when the device aligns with the guardrail. Even if the operator's alignment accuracy is slightly off, the guide brackets can guide the guardrail smoothly into the limiting component, preventing the guardrail from getting stuck at the device entrance and improving the convenience of start-up and shutdown. The connection structure between the guide roller and the guide bracket is the same as that of the limiting roller, also featuring bearing seats and springs that slide along the groove to prevent damage from collisions between the guardrail and the guide roller. This further enhances the continuity of subsequent cleaning operations. At the same time, the presence of the guide component allows the device to be adapted to cleaning curved guardrails. When the device moves along the curved guardrail, the guide roller can adjust its angle and position in real time to guide the machine body to smoothly follow the direction of the guardrail and avoid the device from deviating or getting stuck due to the curvature of the curved guardrail, thus expanding the applicable scenarios of the device.

[0014] Furthermore, the bearing housing is I-shaped, and two sets of limiting mechanisms are provided in the vertical direction of the machine body. Compared with ordinary rectangular bearing housings, the I-shaped bearing housing has stronger anti-tilting ability when sliding in the slide groove. It can effectively prevent the bearing housing from tilting or jamming due to uneven force, ensuring that the limiting roller always remains horizontal and in contact with the guardrail, avoiding local limiting failure due to the tilting of the limiting roller, thus improving the limiting accuracy. At the same time, the raised structures on both sides of the I-shaped bearing housing can form a more stable fit with the inner wall of the slide groove, reducing the gap between the two, reducing the shaking amplitude of the bearing housing during cleaning, thereby reducing the vibration of the limiting roller, making the limiting action more stable, ensuring the relative position stability of the machine body and the guardrail, and improving the uniformity of the cleaning effect. Two sets of limiting mechanisms are set in the vertical direction of the machine body, which can form double limiting from the upper and lower key positions of the guardrail to prevent the machine body from deviating in the vertical direction during the cleaning process. For example, when the device encounters local protrusions on the guardrail surface or uneven force on the cleaning roller brush, the upper and lower sets of limiting rollers can jointly constrain the position of the machine body, prevent the machine body from tilting upward or downward, and ensure that the cleaning roller brush always maintains uniform contact with the guardrail surface, avoiding the situation of incomplete cleaning in some areas.

[0015] Furthermore, the cleaning mechanism also includes a fixed rod fixedly connected to the machine body and a compression spring rod connected to the machine body and the support frame at both ends respectively; the support frame is rotatably mounted on the fixed rod, and the compression spring rod always applies an elastic force toward the guardrail to the support frame, so that the cleaning roller brush elastically squeezes the guardrail.

[0016] The support frame is rotatably mounted on the fixed rod, giving it the freedom to rotate around the fixed rod. Combined with the elastic force applied to the support frame by the spring rod, which acts towards the guardrail, the cleaning roller brush can flexibly adjust its angle according to the shape of the guardrail surface. When there are slight deformations or local protrusions on the guardrail surface, the cleaning roller brush can adaptively conform to the surface through the rotation of the support frame, avoiding cleaning dead spots caused by unevenness and improving cleaning coverage. The spring rod provides a continuous and stable elastic force to the support frame, ensuring that the cleaning roller brush always adheres to the guardrail surface with appropriate pressure. This pressure does not decrease due to vibration during device movement or prolonged use. Stable contact pressure ensures that the brush bristles effectively contact the guardrail surface and crevices, ensuring consistent cleaning intensity and preventing insufficient cleaning in certain areas. The cooperative structure of the fixed rod and spring rod also makes the installation and removal of the cleaning roller brush more convenient. Subsequent maintenance only requires loosening the spring rod to adjust or replace the cleaning roller brush, eliminating the need to disassemble complex structures, reducing maintenance difficulty and time, and improving the ease of use of the equipment.

[0017] Furthermore, an adjusting bolt is installed on the compression spring rod. Rotating the adjusting bolt can change the compression amount of the compression spring rod, thereby adjusting the squeezing force of the cleaning roller brush on the guardrail.

[0018] The adjusting bolt can be rotated to change the compression of the spring rod, thereby precisely adjusting the squeezing force of the cleaning roller brush on the guardrail. This allows the device to adapt to municipal guardrails of different materials. For example, when dealing with plastic guardrails with a thin surface coating, the compression of the spring rod can be reduced to lower the squeezing force and prevent scratching the coating. When dealing with metal guardrails with stubborn dirt on the surface, the compression can be increased to increase the squeezing force, ensuring that the bristles can deeply remove dirt, balancing cleaning effectiveness and guardrail protection. At the same time, the setting of the adjusting bolt makes the squeezing force adjustment repeatable and precise. Operators can record and reuse the appropriate bolt adjustment position according to the material and dirt condition of different batches of guardrails, eliminating the need for trial and error adjustment each time, improving work efficiency. Furthermore, precise pressure control can prevent excessive wear of the cleaning roller brush due to excessive pressure, extending the brush bristle life and reducing equipment consumable costs.

[0019] Furthermore, the cleaning roller brush includes a support shaft and bristles. The bristles are made of nylon and the free ends of the bristles are radially distributed in a direction away from the axis of the support shaft. The support shaft is connected to the drive motor via a belt drive.

[0020] The nylon bristles possess excellent wear resistance and toughness, and are not prone to breakage or deformation with long-term use, maintaining stable cleaning ability. The smooth surface of nylon also prevents it from easily absorbing dust and dirt, making the bristles easy to clean after use and reducing secondary pollution caused by residue. Furthermore, the moderate hardness of nylon effectively removes stubborn dirt without scratching the protective coating on the railing surface, balancing cleaning effectiveness and railing protection. The free ends of the bristles are radially distributed, allowing them to contact the railing surface and gaps from multiple angles. For example, dirt in the seams and corners of the railing can be effectively removed through the multi-directional contact of the radial bristles, avoiding the problem of traditional unidirectional bristles failing to cover gaps, thus improving cleaning thoroughness. At the same time, the radial distribution ensures more even pressure on the bristles, reducing wear caused by excessive force on certain areas and extending the overall lifespan of the cleaning roller brush. The support shaft and the drive motor are connected by a belt drive. The belt has a certain degree of elasticity, which can buffer the instantaneous impact force generated during the start-up or operation of the drive motor, and prevent the impact force from being directly transmitted to the cleaning roller brush, causing damage to the brush bristles or the support shaft. This protects the core components of the equipment. At the same time, the belt drive structure is simple and has low maintenance costs. When the belt wears out, the transmission function can be restored simply by replacing the belt. There is no need to disassemble complex parts, which reduces maintenance difficulty and cost.

[0021] Furthermore, the cleaning device also includes an electrical control box and a motor. The output shaft of the motor is connected to the moving wheel via a transmission shaft. The electrical control box is electrically connected to the motor and can control the start and stop of the motor and adjust its speed. The electrical control box is equipped with a remote controller, which is connected to the electrical control box wirelessly.

[0022] The electric motor drives the moving wheels through a transmission shaft, replacing the traditional manual pushing method and significantly reducing the labor intensity of operators. It is especially suitable for long-distance guardrail cleaning operations. At the same time, the speed of the electric motor can be adjusted through the electrical control box, allowing operators to flexibly adjust the moving speed according to the severity of the dirt on the guardrail. For example, when dealing with stubborn dirt, the speed can be reduced to prolong the contact time between the cleaning roller brush and the guardrail to improve the cleaning effect, while the speed can be increased to improve the overall work efficiency when dealing with floating dust. The remote controller is connected to the electrical control box wirelessly, allowing operators to operate the device from a safe area away from road traffic (such as a sidewalk or inside a maintenance vehicle). This completely avoids the safety risks of personnel working on the road and solves the core safety hazards of traditional manual cleaning or close-range equipment operation. Moreover, the wireless communication method is not limited by cable length, allowing for a wider operating range. Even if there are obstacles around the guardrail, the device can still be operated normally through remote control. The electrical control box centrally controls the start, stop, and speed of the motor, making the device's operation more stable and avoiding fluctuations in movement speed caused by uneven manual pushing force. It ensures consistent contact time between the cleaning roller brush and the guardrail, improving the uniformity of the cleaning effect. At the same time, the centralized control structure facilitates subsequent expansion of functions, such as achieving linkage control with other components (spraying system), thereby improving the overall intelligence level of the equipment.

[0023] Furthermore, the cleaning mechanism also includes a housing fixed to the machine body, an annular pipes laid on both sides of the guardrail passage, and a water pump installed between the housing and the annular pipes; the annular pipes are provided with several spray heads facing the guardrail, and the water pump is electrically connected to the electrical control box.

[0024] The storage tank can store cleaning water, providing a stable water source for the spray system. This avoids the limitation of the operating range caused by the reliance on external water sources for traditional high-pressure water guns, allowing the device to operate normally in areas without external water supply (such as suburban roads). The ring pipe is laid on both sides of the guardrail passage, and the several spray heads are all facing the guardrail, which can achieve all-round spraying of both sides of the guardrail surface. This ensures that the surface and gaps of the guardrail are covered with cleaning water. The water flow from the spray head can soften stubborn dirt (such as oil stains and exhaust condensate) on the guardrail surface, reduce the cleaning difficulty of the cleaning roller brush, and make the dirt easier to be removed by the brush bristles, improving cleaning efficiency and thoroughness, forming a synergistic cleaning effect of "spray softening + roller brush removal". The water pump is electrically connected to the control box, enabling the spray system and cleaning roller brush to start and stop synchronously. This avoids water waste caused by spraying when the cleaning roller brush is not running, or reduced cleaning effect caused by the cleaning roller brush being running but not spraying. At the same time, the control box can control the output pressure of the water pump and adjust the spray intensity according to the degree of dirt. For example, increase the pressure for stubborn dirt and decrease the pressure for loose dust, further saving water resources and reducing operating costs.

[0025] Furthermore, a liquid level sensor is installed inside the container; the liquid level sensor is electrically connected to the electrical control box, and when the water level in the container is lower than a preset threshold, the display screen of the remote controller controlled by the electrical control box pops up a reminder and triggers a buzzer to emit a low-frequency warning sound.

[0026] The liquid level sensor inside the tank can monitor the water level changes in real time and transmit the water level data to the electrical control box, realizing dynamic monitoring of the water source status. This prevents the water pump from running dry due to water shortage in the tank, protects the pump's seals and motor, reduces equipment failures, and extends the pump's service life. At the same time, real-time monitoring can prevent operators from judging the water level based on experience, improving the accuracy of water level monitoring. When the water level is lower than the preset threshold, the electrical control box simultaneously triggers a pop-up reminder on the remote controller's display screen and a low-frequency buzzer alert. This dual alert method ensures that operators can promptly detect water shortages. Even if operators are distracted or the environment is noisy, they can still receive reminders through visual and audible signals, preventing the equipment from shutting down due to failure to replenish water in time, ensuring the continuity of cleaning operations, and reducing efficiency losses caused by downtime. The pop-up reminder can intuitively display the current water level status, helping operators to judge the remaining cleaning water volume to support the operation time, making it easier to plan the water replenishment time and location in advance, avoiding temporary shutdowns for water replenishment in busy traffic sections, reducing the impact on road traffic, and the low-frequency prompt sound can serve as a reminder without causing noise pollution to the surrounding environment, which meets the environmental protection requirements of municipal operations.

[0027] Furthermore, the remote controller is equipped with a display screen and an emergency stop button; the display screen can show the machine's movement position, motor speed, and cleaning roller brush working status in real time; the emergency stop button is electrically connected to the power-off module in the electrical control box, and pressing it can immediately cut off the power to the motor and drive motor.

[0028] The remote controller's display screen shows the machine's real-time position, allowing operators to accurately track the cleaning progress, accurately calculate the length of cleaned guardrails, and avoid duplicate or missed areas. The position information also helps operators adjust the machine promptly if it deviates, ensuring an accurate cleaning path. The display screen also provides real-time feedback on motor speed and cleaning roller status, allowing operators to visually determine if the machine is operating normally. For example, if the motor speed fluctuates abnormally or the cleaning rollers jam (e.g., a sudden drop in speed), the machine can be stopped immediately for inspection, preventing damage to components due to abnormal operation and reducing the risk of further escalation. Speed ​​information also helps operators adjust cleaning parameters in real-time based on cleaning results. The emergency stop button is directly connected to the power-off module in the control box. Pressing it instantly cuts off the power to the motor and drive motor, immediately stopping the machine's movement and cleaning operations. In emergencies (such as passing vehicles approaching the machine, severe deformation of the guardrail causing jamming, or operators discovering a malfunction), operators can quickly terminate the machine's operation using the emergency stop button to prevent accidents and ensure the safety of equipment, personnel, and passing vehicles, reducing safety risks.

[0029] The beneficial effects of this utility model are:

[0030] This municipal road guardrail cleaning device achieves a comprehensive improvement in cleaning efficiency, operational safety, cleaning quality, equipment adaptability, environmental friendliness, and ease of operation through the synergistic effect of multiple components, effectively solving the core pain points of traditional cleaning methods.

[0031] In terms of cleaning efficiency, the device uses motor-driven brakeable movable wheels to replace manual pushing, and in conjunction with cleaning roller brushes on both sides of the guardrail passage to clean the surface of both sides of the guardrail simultaneously. Combined with the "spraying softening + roller brush cleaning" collaborative mode of the ring pipe and spray head, it greatly shortens the time spent on a single cleaning, avoids the inefficiency of traditional manual wiping section by section and the local cleaning limitations of high-pressure water guns, and can achieve continuous long-distance operation, significantly improving the overall efficiency of municipal guardrail maintenance.

[0032] In terms of operational safety, the wireless communication connection between the remote controller and the electrical control box allows operators to control the equipment in a safe area away from road traffic, completely avoiding the risk of operating on the road. At the same time, the emergency stop button on the remote controller can instantly cut off the power to the motor and drive motor in case of an emergency. Combined with the real-time feedback on the machine's movement position, motor speed, and cleaning roller brush working status on the display screen, a triple safety guarantee of "remote control + real-time monitoring + emergency protection" is formed, solving the core problem of high personnel safety risks in traditional cleaning methods.

[0033] In terms of thorough cleaning, the cleaning roller brush uses radial bristles made of nylon, which can cover the surface of the guardrail and the gaps between the joints from multiple angles. The elastic force provided by the spring rod ensures that the cleaning roller brush always fits the surface of the guardrail. Even if there is slight deformation or protrusion of the guardrail, it can still make contact adaptively. In addition, the water flow sprayed from the spray head softens stubborn dirt and effectively removes pollutants such as dust, exhaust oil and dirt, avoiding the cleaning dead corners and stubborn dirt residue problems of traditional cleaning methods.

[0034] In terms of equipment adaptability, the spring and sliding bearing seat of the limiting mechanism enable the limiting roller to adaptively adjust the spacing according to the width of the guardrail. The gradual spacing structure of the guide component is adapted to curved guardrail sections. The adjusting bolt on the compression spring rod can adjust the squeezing force according to the guardrail material and dirt conditions, meeting the cleaning needs of guardrails of different specifications and materials, breaking the limitation of the single adaptability of traditional equipment.

[0035] In terms of ease of use, the liquid level sensor inside the tank provides dual alerts via a pop-up display and a buzzer when the water level is too low, eliminating the need for frequent manual checks of the water level. The real-time feedback on the equipment status on the display screen allows operators to accurately adjust parameters such as the motor speed. No professional skills are required to get started quickly, which reduces the operational threshold and labor intensity of municipal maintenance operations and fully meets the needs of modern municipal road guardrail maintenance for high efficiency, safety, quality, and environmental protection. Attached Figure Description

[0036] Figure 1 A connection diagram illustrating one embodiment of a municipal road guardrail cleaning device of the present invention;

[0037] Figure 2 This is a schematic structural diagram illustrating one embodiment of a municipal road guardrail cleaning device of the present invention.

[0038] Figure 3 A side view illustrating a schematic embodiment of a municipal road guardrail cleaning device of the present invention in a cut-out state.

[0039] Figure 4 A schematic structural diagram illustrating a cross-sectional view of a municipal road guardrail cleaning device according to the present invention;

[0040] Figure 5 Used to explain Figure 4 Enlarged view of a portion of point A in the middle;

[0041] Figure 6 Used to explain Figure 4 A magnified view of a portion of point B in the middle.

[0042] List of components and reference numerals:

[0043] 1. Machine body; 11. Moving wheels; 12. Guardrail passage; 2. Cleaning mechanism; 21. Cleaning roller brush; 211. Support shaft; 212. Brush bristles; 22. Support frame; 23. Drive motor; 24. Fixing rod; 25. Compression spring rod; 26. Belt; 27. Receiving box; 28. Annular tube; 29. ​​Water pump; 3. Limiting mechanism; 31. Limiting assembly; 311. Limiting roller; 312. Limiting bracket; 3121. Slide groove; 313. Bearing seat; 314. Spring; 32. Guide assembly; 321. Guide roller; 322. Guide bracket. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] It should be noted that the directional terms such as left, right, up, down, front, and back in the embodiments of this utility model are only relative concepts or are based on the normal use state of the product, i.e., the direction of the product's movement, and should not be considered as limiting.

[0046] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of this utility model not only refer to changes in position, but also include movements such as rotation and rolling in which the position does not change relative to the position, but the state changes.

[0047] Finally, it should be noted that when a component is said to be "located on" or "set on" another component, it can be on the other component or may have an intervening component at the same time. When a component is said to be "connected to" another component, it can be directly connected to the other component or may have an intervening component at the same time.

[0048] like Figures 1 to 6 The municipal road guardrail cleaning device shown includes a body 1, a cleaning mechanism 2, and a limiting mechanism 3. The components work together to achieve efficient and safe guardrail cleaning operations.

[0049] The machine body 1 serves as the basic load-bearing structure of the device. It is equipped with brakeable movable wheels 11 at the bottom. The movable wheels 11 are connected to the output shaft of the motor through a transmission shaft. Under the drive of the motor, the machine body 1 can move along the guardrail. The braking function can also achieve precise positioning of the machine body 1 during cleaning operations. A guardrail passage 12 is opened in the middle of the machine body 1 for the guardrail to pass through as a whole, providing a spatial basis for simultaneous cleaning on both sides of the guardrail.

[0050] The cleaning mechanism 2 is mounted on both sides of the guardrail passage 12 corresponding to the machine body 1. It mainly includes a cleaning roller brush 21, a support frame 22, a drive motor 23, a fixing rod 24, and a spring rod 25. The cleaning roller brush 21 consists of a support shaft 211 and bristles 212. The bristles 212 are made of nylon and are radially distributed at their free ends away from the axis of the support shaft 211. The support shaft 211 is connected to the output shaft of the drive motor 23 via a belt 26. After the drive motor 23 is started, it can drive the cleaning roller brush 21 to rotate at a constant speed to remove dirt. The support frame 22 is rotatably mounted on the fixing rod 24 fixed on the machine body 1. The two ends of the spring rod 25 are respectively connected to the machine body 1 and the support frame. 22. An elastic force is always applied to the support frame 22 towards the guardrail, so that the cleaning roller brush 21 can fit tightly against the surface of the guardrail. An adjusting bolt is also installed on the spring rod 25. Rotating the adjusting bolt can change the compression of the spring rod 25, thereby adjusting the squeezing force of the cleaning roller brush 21 on the guardrail. The spraying-related components include a receiving box 27 fixed to the machine body 1, annular pipes 28 arranged on both sides of the guardrail channel 12, and a water pump 29 connecting the receiving box 27 and the annular pipes 28. Several spray heads facing the guardrail are opened on the annular pipes 28. After the water pump 29 is started, it can transport the cleaning water in the receiving box 27 to the annular pipes 28, and then spray it onto the surface of the guardrail through the spray heads to soften stubborn dirt.

[0051] The limiting mechanism 3 is installed at both ends of the machine body 1 and includes two sets of limiting components 31 (set vertically along the machine body 1). Each set of limiting components 31 consists of a limiting roller 311, a limiting bracket 312, a bearing seat 313, and a spring 314. The limiting bracket 312 is fixed to the machine body 1 and has a groove 3121 extending along the width of the guardrail passage 12 inside. The bearing seat 313 is I-shaped and can slide along the groove 3121. The two ends of the limiting roller 311 are installed on the bearing seat 313. The spring 314 is installed between the bearing seat 313 and the inner wall of the groove 3121 near the outer side of the machine body 1 and is set along the length of the groove 3121. The elastic force of the spring 314 can push the bearing seat 313. The limiting roller 311 is driven to move towards the guardrail, so that the limiting rollers 311 on both sides form elastic compression against the guardrail through which it passes. The limiting mechanism 3 is also equipped with a guide component 32. The guide component 32 is integrally formed with the limiting component 31 and is located on the side of the limiting component 31 away from the center of the machine body 1. The guide component 32 is composed of a guide roller 321 and a guide bracket 322. The connection structure between the guide roller 321 and the guide bracket 322 is the same as that between the limiting roller 311 and the limiting bracket 312. Along the direction close to the center of the machine body 1, the distance between the guide brackets 322 on both sides of the guardrail channel 12 gradually shortens, and the shortest value of this distance is equal to the distance between the limiting brackets 312 on both sides, which can guide the guardrail to smoothly enter the limiting component 31.

[0052] The electrical control system is centered around an electrical control box, which is electrically connected to the electric motor, drive motor 23, and water pump 29. It can control the start and stop of each component and adjust the motor speed. A liquid level sensor is installed inside the container 27, which is electrically connected to the electrical control box to monitor the water level in the container 27 in real time. The electrical control box is also equipped with a remote controller, which is wirelessly connected to the control box. The remote controller has a display screen and an emergency stop button. The display screen shows the real-time movement position of the machine body 1, the motor speed, and the working status of the cleaning roller brush 21. The emergency stop button is electrically connected to the power-off module inside the electrical control box; pressing it immediately cuts off the power to the electric motor and drive motor 23. When the water level in the container 27 falls below a preset threshold, the electrical control box will control the remote controller's display screen to pop up a reminder and trigger a buzzer to emit a low-frequency warning sound, ensuring that operators can replenish water in a timely manner.

[0053] This embodiment is applied to the cleaning of guardrails on urban main roads. The guardrails on this road section include straight sections and curved sections. The guardrail materials include metal and plastic with a thin surface coating. The surface is covered with pollutants such as floating dust and oil stains formed by vehicle exhaust. Using this municipal road guardrail cleaning device can achieve efficient and adaptable cleaning.

[0054] Before operation, add cleaning water to the container 27 fixed on the machine body 1. The liquid level sensor in the container 27 monitors the water level in real time and transmits the data to the electrical control box. The electrical control box simultaneously feeds back the water level information to the display screen of the remote controller to ensure that the water level is within the normal operating range. Then, connect the remote controller and the electrical control box wirelessly and check the status of the display screen and emergency stop button on the remote controller. The display screen should be able to display the moving position of the machine body 1, the motor speed and the working status parameters of the cleaning roller brush 21. The emergency stop button should maintain an effective electrical connection with the power-off module in the electrical control box. Depending on the material and dirt condition of the guardrail to be cleaned, rotate the adjusting bolt on the spring rod 25 in the cleaning mechanism 2 to change the compression amount of the spring rod 25 and adjust the squeezing force of the cleaning roller brush 21 on the guardrail. For oil stains on the surface of metal guardrails, the squeezing force can be increased appropriately, while for plastic guardrails, the squeezing force should be reduced to avoid damage to the coating. At the same time, check the limiting mechanism 3 to ensure that the two sets of limiting components 31 set in the vertical direction of the machine body 1 are in normal condition, that the slide groove 3121 in the limiting bracket 312 is not blocked by debris, that the I-shaped bearing seat 313 can slide smoothly along the slide groove 3121, and that the spring 314 between the bearing seat 313 and the slide groove 3121 near the outer inner wall of the machine body 1 is not deformed, so that the limiting roller 311 can form a stable squeezing force on the guardrail through the elastic force of the spring 314.

[0055] At the start of operation, push the machine body 1 to the beginning of the guardrail, allowing the guardrail to pass through the guardrail channel 12 in the middle of the machine body 1. The guide components 32 on both sides of the guardrail channel 12 first contact the guardrail. The guide brackets 322 in the guide components 32, whose spacing gradually decreases along the direction closer to the center of the machine body 1, guide the guardrail smoothly into the limiting component 31. Even when facing a curved section of the guardrail, the guide rollers 321 can flexibly adjust their position through the matching connection structure with the guide brackets 322 to avoid the guardrail getting stuck. Start the motor controlled by the electrical control box. The output shaft of the motor drives the brakeable movable wheel 11 at the bottom of the machine body 1 to rotate through the transmission shaft, driving the machine body 1 to move evenly along the guardrail. The system moves quickly and simultaneously starts the drive motor 23. The output shaft of the drive motor 23 drives the support shaft 211 of the cleaning roller brush 21 to rotate via the belt 26. The nylon bristles 212 radially distributed on the support shaft 211 rotate with the support shaft 211 to clean the surfaces on both sides of the guardrail. At the same time, the water pump 29 is started, and the water pump 29 delivers the cleaning water in the container 27 to the annular pipes 28 arranged on both sides of the guardrail passage 12. The spray nozzles on the annular pipes 28 spray water onto the surface of the guardrail to soften stubborn oil stains, achieving a synergistic cleaning of "spray softening + roller brush cleaning" to ensure that dirt on the surface of the guardrail and in the joint gaps can be effectively removed.

[0056] During operation, operators can monitor the display screen in real time from a safe area such as a sidewalk to track the movement of the machine 1 and avoid repeated cleaning or omissions. They can also monitor the motor speed and adjust it flexibly based on the cleaning effect to ensure the cleaning roller brush 21 maintains a suitable speed. In case of emergencies such as approaching vehicles, the emergency stop button on the remote controller is immediately pressed to instantly cut off the power to the motor and drive motor 23, stopping the machine 1 and the cleaning roller brush 21. The equipment is restarted only after the danger has passed. When the water level in the container 27 falls below a preset threshold, the level sensor transmits a signal to the control box. The control box immediately controls the remote controller to display a water level reminder window and triggers a buzzer to emit a low-frequency warning sound. Upon receiving the reminder, the operator stops the machine and replenishes water to prevent the water pump 29 from running dry and being damaged.

[0057] After the operation is completed, the motor, drive motor 23 and water pump 29 are stopped by the electrical control box, the power of the remote controller and electrical control box is turned off, the dirt remaining on the cleaning roller brush 21 is cleaned, the remaining cleaning water in the container 27 is drained, the condition of each component is checked and simple maintenance is performed to prepare for the next operation.

[0058] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A municipal road guardrail cleaning device, characterized in that, include: The machine body has brakeable casters at the bottom and a guardrail passage in the middle for guardrails to pass through. The cleaning mechanism includes cleaning roller brushes, support frames, and drive motors located on both sides of the guardrail passage. The output shaft of the drive motor is connected to the cleaning roller brushes via a transmission connection. The cleaning roller brushes are installed on the machine body at positions corresponding to both sides of the guardrail passage through the support frames. The limiting mechanism includes limiting components installed at both ends of the machine body. Each limiting component includes limiting rollers and limiting brackets located on both sides of the guardrail passage. The limiting brackets have grooves extending along the width of the guardrail passage. The two ends of the limiting rollers are mounted to the limiting brackets via bearing seats that can slide along the grooves. A spring is installed between the bearing seats and the inner wall of the groove near the outer side of the machine body, and is arranged along the length of the groove. The limiting rollers on both sides of the guardrail passage can elastically compress the guardrail that passes through them through the elastic force of the springs.

2. The municipal road guardrail cleaning device according to claim 1, characterized in that, The limiting mechanism further includes a guide component, which is integrally formed with the limiting component. The guide component is located on the side of the limiting component away from the center of the machine body. The guide component includes guide rollers and guide brackets disposed on both sides of the guardrail passage. The connection structure between the guide rollers and the guide brackets is consistent with the connection structure between the limiting rollers and the limiting brackets. Along the direction close to the center of the machine body, the distance between the two guide brackets on both sides of the guardrail passage gradually shortens, and the shortest value of this distance is equal to the distance between the two limiting brackets.

3. A municipal road guardrail cleaning device according to claim 1, characterized in that, The bearing housing is I-shaped, and the limiting mechanism is provided in two sets in the vertical direction of the machine body.

4. A municipal road guardrail cleaning device according to claim 1, characterized in that, The cleaning mechanism also includes a fixed rod fixedly connected to the machine body and a compression spring rod connected to the machine body and the support frame at both ends respectively; the support frame is rotatably mounted on the fixed rod, and the compression spring rod always applies an elastic force toward the guardrail to the support frame, so that the cleaning roller brush elastically squeezes the guardrail.

5. A municipal road guardrail cleaning device according to claim 4, characterized in that, An adjusting bolt is installed on the compression spring rod. Rotating the adjusting bolt can change the compression amount of the compression spring rod, thereby adjusting the squeezing force of the cleaning roller brush on the guardrail.

6. A municipal road guardrail cleaning device according to claim 1, characterized in that, The cleaning roller brush includes a support shaft and bristles. The bristles are made of nylon and the free ends of the bristles are radially distributed away from the axis of the support shaft. The support shaft is connected to the drive motor via a belt drive.

7. A municipal road guardrail cleaning device according to claim 1, characterized in that, It also includes an electrical control box and a motor. The output shaft of the motor is connected to the moving wheel via a transmission shaft. The electrical control box is electrically connected to the motor and can control the start, stop and speed adjustment of the motor. The electrical control box is equipped with a remote controller, which is wirelessly connected to the electrical control box.

8. A municipal road guardrail cleaning device according to claim 7, characterized in that, The cleaning mechanism also includes a receiving box fixed to the machine body, an annular pipes arranged on both sides of the guardrail passage, and a water pump installed between the receiving box and the annular pipes; the annular pipes are provided with several spray heads facing the guardrail, and the water pumps are electrically connected to the electrical control box.

9. A municipal road guardrail cleaning device according to claim 8, characterized in that, The container is equipped with a liquid level sensor; the liquid level sensor is electrically connected to the electrical control box, and when the water level in the container is lower than a preset threshold, the electrical control box controls the display screen of the remote controller to pop up a reminder and triggers a buzzer to emit a low-frequency prompt sound.

10. A municipal road guardrail cleaning device according to claim 7, characterized in that, The remote controller is equipped with a display screen and an emergency stop button. The display screen can show the machine's movement position, motor speed, and cleaning roller brush working status in real time. The emergency stop button is electrically connected to the power-off module in the electrical control box, and pressing it can immediately cut off the power to the motor and drive motor.

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