A road sign wiper device

Abstract

The application discloses a road indicating lamp scrubbing device, which comprises two upper housings and a lower housing, a first motor is installed in the upper housing, the first motor is connected with a first screw rod extending to the inside of the lower housing, the first screw rod is in threaded connection with the lower housing, two U-shaped guide plates are symmetrically fixed to the bottom of the upper housing and are slidably embedded with the lower housing, two sliding blocks are slidably embedded on one side of the upper housing and the lower housing, the sliding blocks are driven by a driving assembly installed in the upper housing and the lower housing, an arc-shaped clamping plate is fixedly connected to one side of the sliding block, a cavity is formed in the arc-shaped clamping plate, and a plurality of sliding assemblies are installed in the cavity. When the application is used, the signal lamp can be efficiently cleaned, manual high-altitude operation is not needed, automatic cleaning can be realized, and the device is small in size and convenient to store.

Description

Technical Field

[0001] This invention relates to the field of road facility cleaning equipment technology, and in particular to a road indicator light wiping device. Background Technology

[0002] Road indicator lights, as important facilities for traffic guidance and safety warning, are widely used in various traffic locations such as urban roads, highways, tunnels, and bridges. These indicator lights are exposed to the outdoor environment for a long time, and are affected by factors such as vehicle exhaust, dust, rainwater, and insect carcasses. As a result, dirt gradually accumulates on the surface of the lamp cover, leading to a significant decrease in light transmittance, which affects the indication effect and traffic safety.

[0003] Currently, the cleaning of road indicator lights mainly relies on the following methods: First, manual wiping with long poles is labor-intensive and inefficient. For indicator lights installed at higher positions, operators need to use climbing equipment, which poses safety hazards. Second, aerial work platforms are used to transport workers to the vicinity of the indicator lights for cleaning. This method is costly, occupies road resources, and disrupts normal traffic order during operation. Third, some specialized cleaning vehicles are equipped with spray and scrubbing devices, but these devices are bulky, have poor mobility, and are difficult to adapt to the cleaning needs of indicator lights at different heights.

[0004] While some automatic cleaning devices for road indicator lights exist in the existing technology, they generally suffer from the following shortcomings: First, the clamping stability of the devices is poor, and they cannot automatically climb to a suitable height to wipe the road indicator lights; second, the range of motion of the cleaning mechanism is limited, making it impossible to flexibly adjust the cleaning position according to the distance of the traffic lights, and the cleaning coverage is incomplete; third, they cannot provide a continuous water supply during cleaning to maintain high cleaning efficiency; fourth, the devices are inconvenient to store and transport, cannot be folded, and occupy a large amount of space. Therefore, we provide a road indicator light wiping device to solve the above problems. Summary of the Invention

[0005] This invention provides a road indicator light cleaning device that solves the problems of traditional indicator light cleaning devices that rely on manual cleaning, cannot perform automated cleaning, and are inconvenient to store.

[0006] This invention provides a road indicator light cleaning device, comprising two upper housings and a lower housing. A first motor is installed inside each upper housing, and the first motor is connected to a first screw extending into the lower housing. The first screw is threadedly connected to the lower housing. Two U-shaped guide plates are symmetrically fixed to the bottom of each upper housing, and the U-shaped guide plates are slidably fitted into the lower housing below. Two sliding blocks are slidably fitted into one side of each upper and lower housing. The sliding blocks are driven by drive components installed inside the upper and lower housings. An arc-shaped clamping plate is fixedly connected to one side of each sliding block, and the arc-shaped clamping plate has a cavity in which multiple sets of sliding components are installed. A mounting base is rotatably mounted on the other side of each upper housing. The mounting base is driven by a fifth motor installed inside the upper housing. Multiple interconnected support assemblies are mounted on the mounting base. A support bar is installed at the end of the last support assembly. A T-shaped block is slidably embedded in the support bar. A second screw passes through the T-shaped block and is driven by a second motor mounted on the support bar. A support seat is fixedly connected to the T-shaped block. A cleaning disc is rotatably mounted on one side of the support seat, and a cleaning cloth is mounted on the cleaning disc. The cleaning disc is driven by a third motor mounted on the other side of the support seat. A water spray bracket is also mounted on the support seat. A water spray head is mounted at one end of the water spray bracket, and a water supply pipe is connected to the other end of the water spray head. The water supply pipe is connected to a water tank placed on the ground.

[0007] Preferably, the drive assembly includes a bidirectional screw threaded into the two sliding blocks, one end of which is rotatably mounted on the side wall of the upper housing or the lower housing, and the other end of which is driven by a fourth motor installed in the upper housing or the lower housing.

[0008] Preferably, the sliding assembly includes an arc-shaped plate embedded in the inner side of the arc-shaped clamp, a plurality of ball bearings are installed on the inner side of the arc-shaped plate, a plurality of telescopic rods are installed on the outer side of the arc-shaped plate, the other end of the telescopic rods is fixedly installed in the cavity, and a spring is fitted on the telescopic rod.

[0009] Preferably, the support assembly includes a support column, an upper connecting shaft, a lower connecting shaft, and a drive motor. The two ends of the support column are fixedly connected to the upper connecting shaft and the lower connecting shaft, respectively. The upper connecting shaft of an adjacent support column is rotatably connected to the lower connecting shaft. The upper connecting shaft is driven by a drive motor mounted on the lower connecting shaft.

[0010] Preferably, each of the two corresponding arc-shaped clamping plates is equipped with a limiting block, one of the limiting blocks is equipped with multiple tenons, and the other limiting block is provided with a mortise corresponding to the tenons.

[0011] Preferably, the cleaning disc has a plurality of water-permeable holes circumferentially arranged, corresponding to the water spray head.

[0012] Preferably, a dust cover is installed on one side of both the upper housing and the lower housing.

[0013] Preferably, multiple anti-slip pads are also installed on the inner side of the arc-shaped clamp.

[0014] Preferably, the upper housing and the lower housing are each equipped with two protective baffles on opposite sides of the arc-shaped clamping plate.

[0015] Preferably, limit baffles are installed at the ends of both the first screw and the U-shaped guide plate.

[0016] As can be seen from the above technical solution, the present invention provides a road indicator light cleaning device. In use, the device is moved to the side of the road indicator light pole to be cleaned, the water tank is placed in a suitable position on the ground, and one end of the water supply pipe is connected to the water tank. First, the fourth motor inside the upper and lower housings drives the bidirectional screw to rotate, causing the two sets of arc-shaped clamps to open outwards. The device is then fitted onto the light pole, positioning the pole between the two arc-shaped clamps. The fourth motor is then started in reverse, causing the arc-shaped clamps to close. Initially, the ball bearings, under the action of the springs, contact the surface of the light pole. As the arc-shaped clamps continue to close, the ball bearings, under the action of the springs, elastically abut against the surface of the light pole. The arc-shaped plates are compressed backwards under the action of the ball bearings. Simultaneously, the tenon is inserted into the mortise hole, completing the locking process, and the anti-slip pad adheres tightly to the light pole. At this point, the device is installed. Then, depending on the orientation and height of the indicator light, the device begins to climb. Initially, the upper and lower housings are in a close, retracted state. First, the fourth motor inside the upper housing reverses, causing the bidirectional screw to slightly loosen the arc-shaped clamping plate (specifically, the loosened state is such that the tenon is not dislodged from the mortise, the anti-slip pad is detached from and does not contact the lamp post, and the ball bearings remain pressed against the lamp post under the action of the spring). Then, the first motor drives the first screw to rotate. Since the first screw is threadedly connected to the lower housing, and the rotation of the lower housing is restricted by the U-shaped guide plate, the upper housing will move upward along the first screw (at this time, the arc-shaped clamping plate of the lower housing clamps the lamp post). When the upper housing rises to its limit position, the arc-shaped clamping plate of the upper housing clamps the lamp post under the action of the drive assembly, and the arc-shaped clamping plate of the lower housing also slightly loosens the lamp post. Then, the first motor reverses, causing the lower housing to move upward along the first screw. This alternating locking and driving allows the device to climb on the lamp post. When the device climbs to the working position near the indicator light, the arc-shaped clamping plates of the upper and lower housings lock the lamp post, providing stable support for the entire device. Next, the drive motors of each support component activate, unfolding the multi-joint support arm and delivering the support bar and cleaning disc to the appropriate position in front of the indicator light. Then, the fifth motor is activated, driving the mounting base to rotate and adjust the cleaning angle. Simultaneously, the second motor is activated, driving the second screw to rotate, causing the T-block to slide along the support bar, ensuring the cleaning cloth makes precise contact with the indicator light surface and applies pressure. Cleaning then begins; cleaning fluid is sprayed from the nozzle through the water supply pipe, passing through the permeable holes to wet the cleaning cloth and the indicator light mirror. Simultaneously, the third motor is activated, driving the cleaning disc to rotate, and the cleaning cloth performs a rotating scrubbing motion on the indicator light surface. During cleaning, the wiping trajectory and angle of the cleaning cloth can be adjusted by controlling the coordinated actions of the drive motors of each joint and the fifth motor, achieving a thorough cleaning of the indicator light mirror. After cleaning, the components reverse their movements, retracting the support arm, lowering the device, releasing the arc-shaped clamp, and removing the device from the light pole, thus completing one cleaning operation.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The first screw is driven by the first motor to rotate, and with the sliding guidance of the U-shaped guide plate, the relative telescopic movement between the upper and lower shells can be realized, enabling the entire device to climb vertically. At the same time, the bidirectional screw driven by the fourth motor drives the arc-shaped clamping plates on both sides to move towards or away from each other, which can achieve a stable clamping of the lamp post; 2. Through the multi-level connection structure of the support components, the spatial position of the support bar can be flexibly adjusted under the control of the drive motor, so that the cleaning disc can be accurately positioned on the surface to be wiped by the indicator light; in conjunction with the second motor driving the T-shaped block to move along the support bar, the cleaning range of the cleaning disc is further expanded to ensure cleaning without dead corners; 3. By spraying water or cleaning solution onto the cleaning tray area through the water spray bracket and spray head during the wiping process, the surface of the indicator light can be effectively moistened and dirt can be rinsed off. Combined with the rotating wiping of the cleaning cloth, the cleaning effect is significantly improved. The setting of water permeable holes allows the cleaning solution to be sprayed onto the surface of the indicator light, further improving the cleaning efficiency.

[0018] 4. The curved clamp is equipped with a sliding component with ball bearings. Under the action of the spring and telescopic rod, the ball bearings always keep in contact with the surface of the column. They cooperate with the tenons and mortises on the limit block, which can significantly increase the stability of the curved clamp during movement and prevent loosening when moving up and down. Attached Figure Description

[0019] To more clearly illustrate the technical solution of the present invention, the drawings used in the implementation examples will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the overall installation structure of a road indicator light cleaning device proposed in this invention; Figure 2 This is a schematic diagram A of the internal structure of a road indicator light cleaning device proposed in this invention; Figure 3 This is a schematic diagram (B) of the internal structure of a road indicator light cleaning device proposed in this invention; Figure 4 Schematic diagram A shows the installation structure of the cleaning disc of the road indicator light cleaning device proposed in this invention; Figure 5 This is a schematic diagram (B) of the cleaning disc installation structure of a road indicator light cleaning device proposed in this invention; Figure 6 This is a schematic diagram of the arc-shaped clamping plate installation structure of a road indicator light cleaning device proposed in this invention; Figure 7 This is a schematic diagram of the sliding component structure of a road indicator light cleaning device proposed in this invention.

[0021] In the diagram: 1. Upper housing; 2. Lower housing; 3. First motor; 4. First screw; 5. U-shaped guide plate; 6. Sliding block; 7. Arc-shaped clamping plate; 8. Cavity; 9. Mounting base; 10. Support bar; 11. T-block; 12. Second screw; 13. Second motor; 14. Support base; 15. Cleaning tray; 16. Cleaning cloth; 17. Third motor; 18. Water spray bracket; 19. Water spray head; 20. 21. Water supply pipe; 22. Water tank; 23. Bidirectional screw; 24. Fourth motor; 25. Arc plate; 26. Ball bearing; 27. Telescopic rod; 28. Spring; 29. ​​Support column; 30. Upper connecting shaft; 31. Lower connecting shaft; 32. Drive motor; 33. Limit block; 34. Tenon; 35. Mortise hole; 36. Water permeable hole; 37. Dust cover; 38. Anti-slip mat; 39. Protective baffle; 30. Limit baffle. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] See Figure 1-7A road indicator light cleaning device is disclosed, applied in the field of road facility cleaning equipment technology. It enables efficient cleaning of traffic lights without requiring manual high-altitude operations, allowing for automated cleaning. The device is also compact and easy to store. Specifically, it includes two upper housings 1 and a lower housing 2, both of which are hollow structures, providing installation space and protection for internal components. A first motor 3 is installed inside the upper housing 1, fixedly mounted in the middle and bolted to the bottom of the upper housing 1. The first motor 3 is connected to a speed reducer or a motor with a speed reduction function to increase control precision. The first motor 3 is connected to a first screw 4 extending into the lower housing 2. The upper end of the first screw 4 is fixedly connected to the output shaft of the first motor 3 via a coupling. The first screw 4 vertically downwards passes through the bottom of the upper housing 1 and extends into the lower housing 2. The first screw 4 is threadedly connected to the lower housing 2. A threaded sleeve matching the first screw 4 is fixedly installed inside the lower housing 2. The first screw 4 passes through the threaded sleeve and engages with it threadedly. When the first motor 3 drives the first screw 4 to rotate, the upper housing 1 and the lower housing 2 move relative to each other through threaded transmission. Two U-shaped guide plates 5 are symmetrically fixed at the bottom of the upper housing 1, and the two U-shaped guide plates 5 are respectively fixed on the left and right sides of the bottom of the upper housing 1. The U-shaped guide plate 5 is slidably fitted into the lower housing 2. The top of the lower housing 2 has a guide groove that mates with the U-shaped guide plate 5. The U-shaped guide plate 5 is embedded in this guide groove and can slide up and down along it, thus restricting the relative rotation of the upper housing 1 and the lower housing 2, ensuring that they can only move relative to each other in the vertical direction. To ensure smooth vertical movement of the upper housing 1 and the lower housing 2 and ease of storage of the equipment, the length of the U-shaped guide plate 5 is the same as the internal height of the lower housing 2. Two sliding blocks 6 are slidably fitted onto one side of both the upper housing 1 and the lower housing 2. Two sliding blocks 6 are fitted onto the same side of the upper housing 1 and the same side of the lower housing 2, respectively. The two sliding blocks 6 are located at opposite ends of that side. T-shaped sliders are installed at the top and bottom of each sliding block 6, which mate with the grooves opened on the upper housing 1 and the lower housing 2, allowing the sliding block 6 to slide horizontally along the grooves. The sliding block 6 is driven by a drive assembly installed in the upper housing 1 and the lower housing 2. The drive assembly in the upper housing 1 and the lower housing 2 drives the corresponding two sliding blocks 6 to move synchronously towards or away from each other. An arc-shaped clamping plate 7 is fixedly connected to one side of the sliding block 6. The arc-shaped clamping plate 7 is a semi-circular arc-shaped plate with its inner arc surface facing the direction of the lamp post. The two opposing arc-shaped clamping plates 7 can close to form an approximately circular clamping space. One end of the arc-shaped clamping plate 7 is fixedly connected to the sliding block 6, and the other end is a free end. A cavity 8 is opened in the arc-shaped clamping plate 7. The cavity 8 is a hollow area inside the arc-shaped clamping plate 7 and extends along the arc direction of the arc-shaped clamping plate 7. Multiple sets of sliding components are installed in the cavity 8. The sliding components are evenly distributed along the height direction of the arc-shaped clamping plate 7 for rolling contact with the surface of the lamp post.A mounting base 9 is rotatably mounted on the other side of the upper housing 1. The mounting base 9 is located on the side of the upper housing 1 opposite to the arc-shaped clamping plate 7, and is rotatably connected to the upper housing 1 via a rotating shaft. The mounting base 9 is driven by a fifth motor 40 installed inside the upper housing 1. The fifth motor 40 is fixedly installed inside the upper housing 1, and its output shaft is connected to the rotating shaft of the mounting base 9 via a reduction mechanism. Alternatively, a motor with a reduction function can be used for direct connection. The fifth motor 40 can drive the mounting base 9 to rotate around a vertical axis, thereby adjusting the cleaning angle. Multiple sets of interconnected support components are mounted on the mounting base 9. These support components are connected end to end to form a multi-jointed support arm structure. The support components are folded and unfolded through rotatable connections, and can also be folded for storage to reduce space occupation. A support bar 10 is installed at the end of the last support component. The support bar 10 is a long, horizontally arranged plate-like structure used for the moving mechanism of the cleaning components. A T-shaped block 11 is slidably embedded within the support bar 10. The support bar 10 has a T-shaped groove that matches the T-shaped block 11. The T-shaped block 11 is embedded in the groove and can slide freely along the length of the support bar 10. A second screw 12 passes through the T-shaped block 11, and the second screw 12 is horizontally positioned along the length of the support bar 10. The second screw 12 passes through the T-shaped block 11 and is threadedly engaged with it. The second screw 12 is driven by a second motor 13 mounted on the support bar 10. The second motor 13 is fixedly mounted at one end of the support bar 10, and its output shaft is fixedly connected to one end of the second screw 12 via a coupling. When the second motor 13 drives the second screw 12 to rotate, the T-shaped block 11 moves axially along the second screw 12, thereby controlling the forward and backward movement of the cleaning disc 15. A support base 14 is fixedly connected to the T-shaped block 11. The support base 14 is a columnar structure fixed to the side of the T-shaped block 11 and moves forward and backward with the T-shaped block 11. A cleaning disc 15 is rotatably mounted on one side of the support base 14. The cleaning disc 15 has a disc-shaped structure, and its center is rotatably connected to the support base 14 via a rotating shaft. The cleaning disc 15 can rotate around its central axis. A cleaning cloth 16 is mounted on the cleaning disc 15. The cleaning cloth 16 is made of cotton and can be attached to the cleaning disc 15 with Velcro for easy cleaning and replacement. The end of the cleaning cloth 16 is used to contact and scrub the surface of the indicator light. The cleaning disc 15 is driven by a third motor 17 mounted on the other side of the support base 14. The third motor 17 is fixedly mounted on the back of the support base 14, and its output shaft passes through the support base 14 and is fixedly connected to the central rotating shaft of the cleaning disc 15. The third motor 17 drives the cleaning disc 15 to rotate, thereby causing the cleaning cloth 16 to rotate and scrub.A water spray bracket 18 is also installed on the support base 14. The water spray bracket 18 has a rectangular structure and is fixedly installed on the support base 14. A water spray head 19 is installed at one end of the water spray bracket 18, located next to the cleaning tray 15. The water spray head 19 is oriented towards the cleaning tray 15 or the indicator light surface and is used to spray water or cleaning solution onto the cleaning area. At the same time, the control module of the water spray head 19 is installed inside the water spray head bracket 18, which can control the water flow size and on / off state. The water spray head 19 is mounted on the water spray head bracket 18 via a threaded mounting base for easy maintenance and replacement. The other end of the water spray head 19 is connected to a water supply pipe 20. The water supply pipe 20 is a flexible hose that can bend as the device moves. The water supply pipe 20 is connected to a water tank 21 placed on the ground. The water tank 21 stores cleaning water or cleaning solution. A water pump can be installed in the water tank 21 to pressurize the water and deliver it to the water spray head 19.

[0024] In this embodiment, the driving assembly includes a bidirectional screw 22 threadedly mounted within two sliding blocks 6. The bidirectional screw 22 is a screw with opposite thread directions at both ends, with the left and right sections having opposite thread directions. The two sliding blocks 6 are respectively threadedly connected to the left and right sections of the bidirectional screw 22. One end of the bidirectional screw 22 is rotatably mounted on the side wall of the upper housing 1 or the lower housing 2. The left or right end of the bidirectional screw 22 is rotatably mounted on the side wall of the housing via bearings. The other end of the bidirectional screw 22 is driven by a fourth motor 23 mounted within the upper housing 1 or the lower housing 2. The output shaft of the fourth motor 23 is fixedly connected to the end of the bidirectional screw 22 via a coupling. Similarly, the fourth motor 23 can be a motor with a reduction function or a reduction gear can be added in the middle. When the fourth motor 23 drives the bidirectional screw 22 to rotate, the two sliding blocks 6 move closer together or further apart under the drive of opposite threads, thereby achieving the clamping and loosening of the arc-shaped clamping plate 7.

[0025] In this embodiment, the sliding assembly includes an arc-shaped plate 24 embedded inside the arc-shaped clamp 7. The arc-shaped plate 24 is an arc-shaped plate body adapted to the inner arc shape of the arc-shaped clamp 7 and is embedded inside the cavity 8. The arc-shaped plate 24 can slide along the radial direction of the arc-shaped clamp 7. At the same time, a limit stop is also installed on the inner side of the arc-shaped clamp 7 to prevent the arc-shaped plate 24 from falling out. A plurality of balls 25 are installed on the inner side of the arc-shaped plate 24. The balls 25 are spherical rolling bodies embedded in the spherical grooves on the inner side of the arc-shaped plate 24. Part of the balls 25 protrudes from the inner surface of the arc-shaped plate 24 for rolling contact with the surface of the lamp post. Multiple telescopic rods 26 are installed on the outer side of the arc-shaped plate 24. The other end of the telescopic rods 26 is fixedly installed inside the cavity 8. The telescopic rods 26 are multi-section telescopic sleeve structures, with one end fixed to the outer surface of the arc-shaped plate 24 and the other end fixedly installed inside the cavity 8. A spring 27 is fitted on the telescopic rods 26. The spring 27 is a compression spring, with one end abutting against the outer side of the arc-shaped plate 24 and the other end abutting against the bottom wall of the cavity 8. The spring 27 always applies an elastic force that pushes the arc-shaped plate 24 outward, pressing the arc-shaped plate 24 tightly against the limiting block of the arc-shaped clamping plate 7. At the same time, the ball bearing 25 always protrudes. When the arc-shaped clamping plate 7 clamps, the ball bearing 25 drives the arc-shaped plate 24 to compress the spring 27, so that the arc-shaped plate 24 can clamp the lamp post. When it is necessary to move up and down, the arc-shaped clamping plate is slightly loosened. At this time, the ball bearing 25 remains in contact with the lamp bead, which can maintain the stability of the equipment when the device moves up and down.

[0026] In this embodiment, the support assembly includes a support column 28, an upper connecting shaft 29, a lower connecting shaft 30, and a drive motor 31. The support column 28 is a long, cylindrical structure that serves as the backbone of the support arm. Both ends of the support column 28 are fixedly connected to the upper connecting shaft 29 and the lower connecting shaft 30, respectively. The upper connecting shaft 29 is fixed to the upper end of the support column 28, and the lower connecting shaft 30 is fixed to the lower end of the support column 28. Both the upper connecting shaft 29 and the lower connecting shaft 30 are cylindrical shafts used for rotatable connections between adjacent support columns 28. The upper connecting shaft 29 of adjacent support columns 28 is rotatably connected to the lower connecting shaft 30. The upper connecting shaft 29 is driven by the drive motor 31 mounted on the lower connecting shaft 30. The drive motor 31 is fixedly mounted on the outer wall of the lower connecting shaft 30, and its output shaft is fixedly connected to the upper connecting shaft 29. The drive motor 31 drives the upper connecting shaft 29 to rotate, thereby causing the support column 28 connected to the upper connecting shaft 29 to rotate around the connecting shaft, thus realizing the unfolding and folding of the support arm. Similarly, the drive motor 31 can be a motor with a speed reduction function to increase torque.

[0027] In this embodiment, limiting blocks 32 are installed at the ends of the two corresponding arc-shaped clamping plates 7. The limiting blocks 32 are fixed to the free ends of the arc-shaped clamping plates 7. When the two arc-shaped clamping plates 7 are closed, the two limiting blocks 32 are aligned. One limiting block 32 is equipped with multiple tenons 33, which are protruding columnar structures that extend outward from the mating surface of the limiting block 32. The other limiting block 32 has mortises 34 corresponding to the tenons 33. The mortises 34 are concave or through holes that match the shape of the tenons 33. When the two arc-shaped clamping plates 7 are closed, the tenons 33 are inserted into the mortises 34, which serve to position and lock the clamping plates, thereby enhancing clamping stability.

[0028] In this embodiment, the cleaning disc 15 has multiple permeable holes 35 circumferentially oriented, corresponding to the spray nozzles 19. The water holes 35 are fan-shaped through holes that penetrate the cleaning disc 15 and are evenly distributed along the circumference of the cleaning disc 15. The size should be made as large as possible to minimize interference with the water flow. The position of the permeable holes 35 corresponds to the spray direction of the spray nozzles 19. The water or cleaning liquid sprayed from the spray nozzles 19 passes through the permeable holes 35 and sprays onto the surface of the indicator light, wetting the cleaning cloth 16 and the indicator light mirror.

[0029] In this embodiment, a dust cover 36 is installed on one side of both the upper housing 1 and the lower housing 2. The dust cover 36 is an accordion-style dust cover, installed on the side of the upper housing 1 and the lower housing 2 where the slide groove is opened, covering the outside of the slide groove, and is used to prevent dust and debris from entering the interior of the housing, protecting the internal drive components and sliding block 6.

[0030] In this embodiment, multiple anti-slip pads 37 are also installed on the inner side of the arc-shaped clamping plate 7. The anti-slip pads 37 are rubber or silicone pads, fixed on the inner arc surface of the arc-shaped clamping plate 7. The surface of the anti-slip pads 37 is provided with anti-slip texture. When the arc-shaped clamping plate 7 clamps the lamp post, the anti-slip pads 37 are in close contact with the surface of the lamp post, increasing the friction and preventing the device from sliding on the lamp post.

[0031] In this embodiment, two protective baffles 38 are installed on opposite sides of the upper housing 1 and the lower housing 2, located on the arc-shaped clamping plate 7. The protective baffles 38 are elongated plates fixed to the outer walls of the upper housing 1 and the lower housing 2, located on both sides of the mounting base 9 and the support assembly. Their length is the same as the height of the corresponding housing, and their width is slightly larger than the width of the support assembly after folding. They are used to protect the support assembly and the mounting base 9 and prevent damage caused by collisions during transportation.

[0032] In this embodiment, limit baffles 39 are installed at the ends of the first screw 4 and the U-shaped guide plate 5. The limit baffles 39 are circular or square plates, fixed to the lower ends of the first screw 4 and the U-shaped guide plate 5. The size of the limit baffles 39 is larger than the diameter of the first screw 4 and the width of the U-shaped guide plate 5. They are used to limit the lower housing 2 to slide downward relative to the upper housing 1 to the extreme position, prevent the lower housing 2 from falling off the first screw 4 and the U-shaped guide plate 5, and add this locking mechanism to avoid dangerous accidents when the equipment is malfunctioning.

[0033] As can be seen from the above technical solution, when using the device, move it to the side of the road indicator light pole to be cleaned, place the water tank 21 in a suitable position on the ground, and connect one end of the water supply pipe 20 to the water tank 21. First, control the fourth motor 23 inside the upper housing 1 and the lower housing 2 to drive the bidirectional screw 22 to rotate, causing the two sets of arc-shaped clamps 7 to open outward. Put the device on the light pole, so that the light pole is located between the two arc-shaped clamps 7. Start the fourth motor 23 in reverse, and the arc-shaped clamps 7 close. First, the ball bearing 25 contacts the surface of the light pole under the action of the spring 27. As the arc-shaped clamps 7 continue to close, the ball bearing 25 elastically abuts against the surface of the light pole under the action of the spring 27. The arc-shaped plate 24 is compressed backward under the action of the ball bearing 25. At the same time, the tenon 33 is inserted into the tenon hole 34 to complete the locking, and the anti-slip pad 37 is in close contact with the light pole. At this time, the device is installed.

[0034] Then, based on the direction and height of the indicator lights, the ascent begins. Initially, the upper housing 1 and lower housing 2 are in a close, retracted state. First, the fourth motor inside the upper housing 1 is reversed, causing the bidirectional screw 22 to slightly loosen the arc-shaped clamping plate 7 (specifically, the loosened state is such that the tenon 33 is not dislodged from the tenon 34, the anti-slip pad 37 is detached from and does not contact the lamp post, and the ball bearing 25 remains pressed against the lamp post under the action of the spring 27). Then, the first motor 3 drives the first screw 4 to rotate. Since the first screw 4 is threadedly connected to the lower housing 2, and the rotation of the lower housing 2 is restricted by the U-shaped guide plate 5, the upper housing 1 will move upward along the first screw 4 (at this time, the arc-shaped clamping plate 7 of the lower housing 2 clamps the lamp post). When the upper housing 2 rises to its limit position, the arc-shaped clamping plate 7 of the upper housing 1 clamps the lamp post under the action of the drive assembly, and the arc-shaped clamping plate 7 of the lower housing 2 also slightly loosens the lamp post. Then, the first motor 3 reverses, causing the lower housing 2 to move upward along the first screw 4. By alternating between locking and driving, the device can climb the lamppost.

[0035] Once the device climbs to its working position near the indicator light, the arc-shaped clamps 7 of the upper housing 1 and lower housing 2 lock the light pole, providing stable support for the entire device. Next, the drive motors 31 of each support component activate, unfolding the multi-joint support arms and delivering the support bar 10 and cleaning disc 15 to an appropriate position in front of the indicator light. Then, the fifth motor 40 is activated, driving the mounting base 9 to rotate, thereby adjusting the cleaning angle. Simultaneously, the second motor 13 is activated, driving the second screw 12 to rotate, causing the T-block 11 to slide along the support bar 10, ensuring the cleaning cloth 16 contacts the indicator light surface and applies pressure. Cleaning then begins; cleaning fluid is sprayed from the nozzle 19 through the water supply pipe 20, passing through the permeable holes 35 to wet the cleaning cloth 16 and the indicator light mirror. Simultaneously, the third motor 17 is activated, driving the cleaning disc 15 to rotate, and the cleaning cloth 16 rotates and scrubs the indicator light surface.

[0036] During the cleaning process, the wiping trajectory and angle of the cleaning cloth 16 can be adjusted by controlling the coordinated actions of the joint drive motors 31 and the fifth motor 40 to achieve a thorough cleaning of the indicator light mirror. After cleaning, the components reverse their movements, retracting the support arm, lowering the device, releasing the arc-shaped clamp 7, and removing the device from the light pole, thus completing one cleaning operation.

[0037] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention 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 of the invention is indicated by the claims.

[0038] It should be understood that the present invention 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 embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A road indicator light cleaning device, comprising two upper housings (1) and a lower housing (2), characterized in that: The upper housing (1) is equipped with a first motor (3), which is connected to a first screw (4) extending into the lower housing (2). The first screw (4) is threadedly connected to the lower housing (2). Two U-shaped guide plates (5) are symmetrically fixed at the bottom of the upper housing (1). The U-shaped guide plates (5) are slidably fitted into the lower housing (2) on the lower side. Two sliding blocks (6) are slidably fitted into one side of both the upper housing (1) and the lower housing (2). The sliding blocks (6) are driven by drive components installed in the upper housing (1) and the lower housing (2). An arc-shaped clamp (7) is fixedly connected to one side of the sliding block (6). A cavity (8) is opened in the arc-shaped clamp (7). Multiple sets of sliding components are installed in the cavity (8). A mounting seat (9) is rotatably installed on the other side of the upper housing (1). The mounting seat (9) is driven by a fifth motor (40) installed in the upper housing (1). Multiple sets of interconnected support components are installed on the mounting base (9). A support bar (10) is installed at the end of the last support component. A T-shaped block (11) is slidably embedded in the support bar (10). A second screw (12) passes through the T-shaped block (11). The second screw (12) is driven by a second motor (13) installed on the support bar (10). A support seat (14) is fixedly connected to the T-shaped block (11). A cleaning disc (15) is rotatably installed on one side of the support seat (14). A cleaning cloth (16) is installed on the cleaning disc (15). The cleaning disc (15) is driven by a third motor (17) installed on the other side of the support seat (14). A water spray bracket (18) is also installed on the support seat (14). A water spray head (19) is installed at one end of the water spray bracket (18). A water supply pipe (20) is connected to the other end of the water spray head (19). The water supply pipe (20) is connected to a water tank (21) placed on the ground.

2. The road indicator light cleaning device according to claim 1, characterized in that, The drive assembly includes a bidirectional screw (22) threadedly mounted in the two sliding blocks (6), one end of which is rotatably mounted on the side wall of the upper housing (1) or the lower housing (2), and the other end of which is driven by a fourth motor (23) mounted in the upper housing (1) or the lower housing (2).

3. A road indicator light cleaning device according to claim 1, characterized in that, The sliding assembly includes an arc plate (24) embedded in the inner side of the arc plate (7), a plurality of balls (25) are installed on the inner side of the arc plate (24), a plurality of telescopic rods (26) are installed on the outer side of the arc plate (24), the other end of the telescopic rods (26) is fixedly installed in the cavity (8), and a spring (27) is fitted on the telescopic rods (26).

4. A road indicator light cleaning device according to claim 1, characterized in that, The support assembly includes a support column (28), an upper connecting shaft (29), a lower connecting shaft (30), and a drive motor (31). The two ends of the support column (28) are fixedly connected to the upper connecting shaft (29) and the lower connecting shaft (30) respectively. The upper connecting shaft (29) of the adjacent support column (28) is rotatably connected to the lower connecting shaft (30). The upper connecting shaft (29) is driven by the drive motor (31) mounted on the lower connecting shaft (30).

5. A road indicator light cleaning device according to claim 1, characterized in that, Limiting blocks (32) are installed at the ends of the two corresponding arc-shaped clamps (7). One of the limiting blocks (32) is equipped with multiple tenons (33), and the other limiting block (32) has a mortise (34) corresponding to the tenon (33).

6. A road indicator light cleaning device according to claim 1, characterized in that, The cleaning disc (15) has multiple permeable holes (35) on its circumferential direction corresponding to the spray head (19).

7. A road indicator light cleaning device according to claim 1, characterized in that, Dust covers (36) are installed on one side of both the upper housing (1) and the lower housing (2).

8. A road indicator light cleaning device according to claim 1, characterized in that, The inner side of the arc-shaped clamp (7) is also equipped with multiple anti-slip pads (37).

9. A road indicator light cleaning device according to claim 1, characterized in that, The upper shell (1) and the lower shell (2) are each equipped with two protective baffles (38) on opposite sides of the arc-shaped clamp (7).

10. A road indicator light cleaning device according to claim 1, characterized in that, Limiting baffles (39) are installed at the ends of the first screw (4) and the U-shaped guide plate (5).

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