Improved highway cement concrete guardrail cleaning device

Abstract

The utility model discloses an improved expressway cement concrete guardrail cleaning device, including parallelly arranged first brush pole and second brush pole, first brush pole and second brush pole sliding connection, be equipped with the length adjusting assembly for driving second brush pole along the extension direction of first brush pole of sliding on first brush pole, length adjusting assembly is used for adjusting the relative position of second brush pole and first brush pole to realize the whole length of the adjustment of rolling brush body, through the sliding connection of first brush pole and second brush pole of rolling brush body, combination length adjusting assembly can realize the dynamic extension of rolling brush whole length. Avoid the cleaning blind area of traditional equipment because of fixed length.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance technology, specifically to an improved highway cement concrete guardrail cleaning device. Background Technology

[0002] As a key facility for ensuring driving safety, highway concrete guardrails exhibit significant diversity in their structural forms due to differences in road section function, design standards, and regional variations, particularly in height. Specifically, guardrails on roadbed sections are typically 0.8-1.1 meters high, while those on bridges, which need to withstand greater lateral forces, are generally 1.2-1.5 meters high. In special sections such as tunnel entrances / exits and interchanges, guardrail heights can even exceed 1.6 meters. Furthermore, after renovation, some older road sections may exhibit localized changes in guardrail height of 0.3-0.5 meters (such as transitional designs at connecting sections), creating a "continuous height difference" scenario.

[0003] Traditional guardrail cleaning equipment has significant shortcomings in terms of adaptability, specifically: Most equipment uses fixed supports or simple manual adjustment structures, with a height adjustment range of only 0.2-0.4 meters, which cannot cover the full range of guardrail height within 1.6 meters. When facing the height difference between bridge sections and roadbed sections, it is necessary to frequently stop to replace equipment or make manual adjustments, resulting in an increase of 3-5 interruptions per kilometer for a single operation, which seriously reduces maintenance efficiency.

[0004] Manual adjustment requires workers to bend over and operate next to high-speed traffic. On road sections with a height difference of more than 0.5 meters, it is necessary to frequently get on and off the vehicle to make adjustments, which not only increases the labor intensity (more than 200 times per day on average), but also increases the risk of traffic accidents by 2-3 times due to the extended stay time.

[0005] Therefore, given the diverse heights and dynamic changes of highway concrete guardrails, there is an urgent need for a cleaning device with a wide range of mechanical adjustments that eliminates the need for manual adjustment, in order to solve the technical problems of insufficient height adaptability and the requirement for manual adjustment of traditional equipment. Utility Model Content

[0006] The main purpose of this utility model is to provide an improved highway cement concrete guardrail cleaning device, which aims to solve the technical problems of insufficient height adaptability and the need for manual adjustment in the existing technology.

[0007] To achieve the above objectives, the present invention proposes an improved highway cement concrete guardrail cleaning device, which includes a vertically arranged connecting plate. The connecting plate is equipped with a roller brush body, a rotating mechanism, an angle adjustment mechanism, a height adjustment mechanism, a horizontal movement mechanism, and a water sprayer. The roller brush body includes a first brush rod and a second brush rod arranged in parallel, the first brush rod and the second brush rod being slidably connected; the first brush rod is provided with a length adjustment component for driving the second brush rod to slide along the extension direction of the first brush rod; the length adjustment component is used to adjust the overall length of the roller brush body by adjusting the relative position of the second brush rod and the first brush rod; the first brush rod and the second brush rod are respectively provided with multiple bristles distributed on their outer walls away from the second brush rod and away from the outer walls of the first brush rod. The rotating mechanism is used to drive the roller brush body to rotate; the angle adjusting mechanism is used to adjust the rotation angle of the roller brush body; the height adjusting mechanism is used to adjust the height of the roller brush body; the lateral movement mechanism is used to drive the roller brush body to move laterally; and the water sprayer is used to spray water onto the cleaning surface.

[0008] Preferably, a first groove is formed on the side of the first brush rod near the second brush rod, extending along the extension direction of the first brush rod and recessed therein. The length adjustment assembly includes a first motor disposed in the first groove. The output shaft of the first motor is connected to a lead screw. The extension direction of the lead screw is the same as the extension direction of the first brush rod. Two threaded sleeves are fitted on the lead screw and engaged for rotation. The side of the threaded sleeve away from the first groove is connected to the second brush rod. The sides of the two threaded sleeves near the first groove are connected by a connecting strip. The length adjustment assembly also includes a positioning component for fixing the position between the first brush rod and the second brush rod.

[0009] Preferably, a second groove is formed on the side of the connecting strip near the bottom of the first groove, and a third groove is formed on the bottom of the corresponding groove of the first groove and the second groove. The positioning component includes a first electromagnet slidably disposed in the second groove. The first electromagnet is provided with multiple springs on the side of the first electromagnet near the bottom of the second groove. The springs are used to drive the first electromagnet to be housed in the second groove. Multiple second electromagnets are provided at the bottom of the second groove. Multiple first protruding teeth are provided on the side of the first electromagnet away from the bottom of the second groove. The extension direction of the first protruding teeth is perpendicular to the extension direction of the first brush rod. A metal plate is provided in the third groove. Multiple second protruding teeth are provided on the side of the metal plate away from the bottom of the third groove for meshing with the multiple first protruding teeth.

[0010] Preferably, the first brush rod is provided with a sliding plate on the side near the second brush rod, and a sliding rod is provided on the side of the sliding plate away from the first brush rod. The sliding rod has a circular cross-section and the diameter of the sliding rod is greater than the thickness of the sliding plate. The second brush rod is recessed on the side near the first brush rod to form a first sliding groove for the sliding plate to slide, and a second sliding groove is formed at the bottom of the first sliding groove for the sliding rod to slide. The extension directions of the slide bar and the slide plate are in the same direction as the extension direction of the first brush bar, and the first and second slide grooves both penetrate through both ends of the second brush bar.

[0011] Preferably, the outer wall of the slide bar is recessed at intervals to form a plurality of receiving grooves, and a roller is rotatably provided in each receiving groove. The roller protrudes from the receiving groove and contacts the groove wall of the second slide groove, and the outer wall of the roller is covered with a rubber layer.

[0012] Preferably, the rotating mechanism includes a mounting block with a recessed mounting groove. A second motor is installed in the mounting groove, and a rotating shaft is rotatably mounted through the bottom of the mounting groove. A fall arrestor plate is provided at one end of the rotating shaft that contacts the bottom of the mounting groove. The output shaft of the second motor is connected to the side of the fall arrestor plate away from the rotating shaft. A connecting block is provided at the end of the rotating shaft away from the fall arrestor plate. The side of the connecting block away from the rotating shaft is connected to one end of the first vertical rod. A waterproof conductive slip ring for supplying power to the first motor, the first electromagnet, and the second electromagnet is sleeved on the outer wall of the rotating shaft.

[0013] Preferably, the height adjustment mechanism includes a horizontally arranged mounting plate, a vertically arranged support arm on the mounting plate, a cross arm rotatably connected to the end of the support arm away from the mounting plate, a first hydraulic cylinder rotatably connected to the mounting plate, the end of the first hydraulic cylinder away from the mounting plate being rotatably connected to the outer wall of the cross arm in the extension direction, and the end of the cross arm away from the support arm being connected to the mounting block.

[0014] A support plate connected to the connecting plate is provided horizontally below the mounting plate, and multiple ball bearings are embedded on the side of the mounting plate near the support plate.

[0015] Preferably, the angle adjustment mechanism includes a first rotating connector rotatably disposed at the end of the cross arm opposite to the support arm, the side of the first rotating connector opposite to the cross arm being connected to the mounting block; the rotation direction of the first rotating connector is longitudinal rotation. It also includes a second hydraulic cylinder that is rotatably connected to the cross arm, the end of the second hydraulic cylinder opposite to the cross arm being rotatably connected to the lower side wall of the mounting block.

[0016] Preferably, the lateral movement mechanism includes a second rotating connector, which is used to rotatably connect the support arm to the connecting plate. The rotation direction of the second rotating connector is lateral rotation. A third hydraulic cylinder is rotatably connected to the outer wall of the support arm. The end of the third hydraulic cylinder opposite to the support arm is rotatably connected to the connecting plate.

[0017] Preferably, the distance between the rotational connection point of the first hydraulic cylinder and the cross arm and the rotational connection point of the support arm and the cross arm is greater than or equal to half the length of the cross arm.

[0018] In this invention, the first and second brush rods of the roller brush body are slidably connected, and combined with a length adjustment component, the overall length of the roller brush can be dynamically extended. Addressing the full range of guardrail height variations from 0.8 to 1.6 meters in the prior art, this design allows the roller brush bristles to cover the cleaning surface of guardrails at different heights, avoiding cleaning blind spots caused by the fixed length of traditional equipment.

[0019] When the guardrail height transitions from 1.1 meters on the roadbed section to 1.5 meters on the bridge section, the length of the roller brush body can be adjusted, eliminating the need for manual adjustment by stopping the machine, thus greatly improving cleaning efficiency. Meanwhile, the length adjustment of the roller brush body allows it to adapt to guardrails of different heights. In addition, the multi-mechanism collaborative design (rotation, angle, height, and lateral movement) enables three-dimensional adaptive adjustment of the guardrail, overcoming the limitations of traditional equipment that relies on only a single adjustment method. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a front view of the entire utility model and a schematic diagram of the retraction structure of the first hydraulic cylinder; Figure 2 This is a schematic diagram showing the overall front view of the present invention and the structure of the first hydraulic cylinder extending and the second brush rod moving toward the side away from the connecting block. Figure 3 This is a top view of the entire utility model and a schematic diagram of the third hydraulic cylinder in its retracted state. Figure 4 This is a top view of the entire utility model and a schematic diagram of the third hydraulic cylinder in the extended state. Figure 5 This is a schematic diagram of the cross-sectional structure of the roller brush body of this utility model; Figure 6 For the present utility model Figure 5 A magnified schematic diagram of region B in the diagram; Figure 7 This is a partial structural diagram of the length adjustment component of this utility model; Figure 8 This is a schematic diagram of the rotating mechanism and angle adjusting mechanism of this utility model; Figure 9 For the present utility model Figure 7 A magnified structural diagram of area A in the diagram.

[0022] Explanation of icon numbers: 1. First brush rod; 2. Second brush rod; 3. Water sprayer; 4. First groove; 5. First motor; 6. Connecting strip; 7. Lead screw; 8. Second electromagnet; 9. Spring; 10. Threaded sleeve; 11. Metal plate; 12. Second protruding tooth; 13. Third groove; 14. Second groove; 15. First protruding tooth; 16. Second motor; 17. Mounting block; 18. Rotating shaft; 19. Anti-fall plate; 20. Mounting groove; 21. Connecting block; 22. Waterproof conductive slip ring; 23. Cross arm; 24. Second hydraulic cylinder; 25. First rotating connector; 26. Slide rod; 27. Roller; 28. Receiving groove; 29. ​​Second sliding groove; 30. Slide plate; 31. Third hydraulic cylinder; 32. Connecting plate; 33. Second rotating connector; 34. Support arm; 35. First hydraulic cylinder; 36. Support plate; 37. First electromagnet; 38. First sliding groove; 39. Mounting plate.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] 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.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This utility model proposes an improved cleaning device for highway cement concrete guardrails.

[0030] Please refer to Figures 1 to 9 The improved highway cement concrete guardrail cleaning device includes a vertically arranged connecting plate 32, on which a roller brush body, a rotating mechanism, an angle adjustment mechanism, a height adjustment mechanism, a horizontal movement mechanism, and a water sprayer 3 are provided. The roller brush body includes a first brush rod 1 and a second brush rod 2 arranged in parallel, with the first brush rod 1 and the second brush rod 2 slidably connected. The first brush rod 1 is provided with a length adjustment component for driving the second brush rod 2 to slide along the extension direction of the first brush rod 1. The length adjustment component is used to adjust the overall length of the roller brush body by adjusting the relative position of the second brush rod 2 and the first brush rod 1. Multiple bristles are distributed on the first brush rod 1 away from the outer wall of the second brush rod 2 and the second brush rod 2 away from the outer wall of the first brush rod 1, respectively. The rotating mechanism is used to drive the roller brush body to rotate; the angle adjusting mechanism is used to adjust the rotation angle of the roller brush body; the height adjusting mechanism is used to adjust the height of the roller brush body; the lateral movement mechanism is used to drive the roller brush body to move laterally; and the water sprayer 3 is used to spray water onto the cleaning surface.

[0031] In the technical solution of this utility model, the first brush rod 1 and the second brush rod 2 of the roller brush body are slidably connected, and combined with the length adjustment component, the overall length of the roller brush can be dynamically expanded. Addressing the full range of guardrail height variations from 0.8 to 1.6 meters in the background art, this design allows the roller brush bristles to cover the cleaning surface of guardrails of different heights, avoiding cleaning blind spots caused by the fixed length of traditional equipment.

[0032] When the guardrail height transitions from 1.1 meters on the roadbed section to 1.5 meters on the bridge section, the length of the roller brush body can be adjusted, eliminating the need for manual adjustment by stopping the machine, thus greatly improving cleaning efficiency. Meanwhile, the length adjustment of the roller brush body allows it to adapt to guardrails of different heights. In addition, the multi-mechanism collaborative design (rotation, angle, height, and lateral movement) enables three-dimensional adaptive adjustment of the guardrail, overcoming the limitations of traditional equipment that relies on only a single adjustment method.

[0033] Please refer to the appendix. Figure 7 The first brush rod 1 has a first groove 4 that extends and is recessed along the extension direction of the first brush rod 1 on the side near the second brush rod 2. The length adjustment assembly includes a first motor 5 disposed in the first groove 4. The output shaft of the first motor 5 is connected to a lead screw 7. The extension direction of the lead screw 7 is the same as the extension direction of the first brush rod 1. Two threaded sleeves 10 are fitted on the lead screw 7 and are engaged and rotatably disposed thereon. The side of the threaded sleeve 10 away from the first groove 4 is connected to the second brush rod 2. The two threaded sleeves 10 are connected by a connecting strip 6 on the side near the first groove 4. The length adjustment assembly also includes a positioning component for fixing the position between the first brush rod 1 and the second brush rod 2.

[0034] The system employs a first motor 5 driving a lead screw 7-threaded sleeve 10 mechanism, replacing the traditional manual adjustment method. This design increases the speed of brush length adjustment and achieves an adjustment accuracy of ±1mm, completely eliminating the safety hazards of manual bending operation. Simultaneously, the mechanical self-locking characteristic of the lead screw 7 transmission ensures that the brush will not shift due to vibration during high-speed operation. For example, in a scenario involving a 1.6-meter-high guardrail at a tunnel entrance, the equipment can complete length adjustment while in motion, without requiring intervention by stopping the machine. Please refer to the appendix. Figure 7 and 9 The connecting strip 6 has a second groove 14 recessed on the side near the bottom of the first groove 4. The bottom of the first groove 4 and the second groove 14 are correspondingly recessed to form a third groove 13. The positioning component includes a first electromagnet 37 slidably disposed in the second groove 14. The first electromagnet 37 has multiple springs 9 on the side near the bottom of the second groove 14. The springs 9 are used to drive the first electromagnet 37 to be housed in the second groove 14. The bottom of the second groove 14 has multiple second electromagnets 8. The side of the first electromagnet 37 away from the bottom of the second groove 14 has multiple first protruding teeth 15. The extension direction of the first protruding teeth 15 is perpendicular to the extension direction of the first brush rod 1. The third groove 13 has a metal plate 11. The side of the metal plate 11 away from the bottom of the third groove 13 has multiple second protruding teeth 12 for meshing with the multiple first protruding teeth 15.

[0035] The positioning component drives the first protruding tooth 15 and the second protruding tooth 12 to mesh through the magnetic repulsion force between the first electromagnet 37 and the second electromagnet 8, which, together with the metal plate 11, enhances the locking strength. This improves the locking strength and prevents the brush rod from slipping during high-speed operation. The spring 9 reset design ensures that the protruding teeth automatically disengage in the event of power failure or malfunction, facilitating quick maintenance and solving the problem of cumbersome disassembly and removal of traditional bolt fixing. In sections with continuous elevation differences, the equipment can quickly complete length adjustment and locking, and the spring 9 resets to ensure that the first tooth 15 and the second tooth 12 automatically disengage when power is cut off.

[0036] Please refer to the appendix. Figure 5-6 The first brush rod 1 is provided with a sliding plate 30 on the side near the second brush rod 2. The sliding plate 30 is provided with a sliding rod 26 on the side away from the first brush rod 1. The cross-section of the sliding rod 26 is circular and the diameter of the sliding rod 26 is greater than the thickness of the sliding plate 30. The second brush rod 2 is recessed on the side near the first brush rod 1 to form a first sliding groove 38 for the sliding plate 30 to slide. The bottom of the first sliding groove 38 forms a second sliding groove 29 for the sliding rod 26 to slide. The extension direction of the slide bar 26 and the extension direction of the slide plate 30 are in the same direction as the extension direction of the first brush bar 1, and the first slide groove 38 and the second slide groove 29 both penetrate through both ends of the second brush bar 2.

[0037] The sliding rod 26 and the second sliding groove 29 cooperate with each other to make the first brush rod 1 and the second brush rod 2 slide connected. The diameter of the sliding rod 26 is greater than the thickness of the slide plate 30, forming a "T"-shaped limiting structure to prevent the brush rod from leaving the sliding groove when subjected to lateral force, thereby improving the structural stability. The groove runs through both ends of the second brush rod 2, supporting full-length adjustment of the brush rod to meet the cleaning needs of ultra-high-speed rail guardrails over 1.6 meters.

[0038] Please refer to the appendix. Figure 5 The outer wall of the slide bar 26 is recessed at intervals to form a plurality of receiving grooves 28. Each receiving groove 28 is provided with a roller 27 that rotatably protrudes from the receiving groove 28 and contacts the groove wall of the second slide groove 29. The outer wall of the roller 27 is covered with a rubber layer.

[0039] The roller 27 reduces the friction between the slide bar 26 and the second slide groove 29. The multi-point contact support of the roller 27 disperses the contact stress between the slide bar 26 and the slide groove, greatly reducing the friction between the slide bar 26 and the second slide groove 29. The rubber layer covering the surface of the roller 27 reduces metal-to-metal friction loss and buffers vibration, thus greatly extending the service life of the slide groove.

[0040] Please refer to the appendix. Figure 1 and 8The rotating mechanism includes a mounting block 17, on which a mounting groove 20 is recessed. A second motor 16 is installed in the mounting groove 20. A rotating shaft 18 is rotatably installed through the bottom of the mounting groove 20. A fall arrestor plate 19 is provided at one end of the rotating shaft 18, which is in contact with the bottom of the mounting groove 20. The output shaft of the second motor 16 is connected to the side of the fall arrestor plate 19 away from the rotating shaft 18. A connecting block 21 is provided at the end of the rotating shaft 18 away from the fall arrestor plate 19. The side of the connecting block 21 away from the rotating shaft 18 is connected to one end of the first vertical rod. A waterproof conductive slip ring 22 for supplying power to the first motor 5, the first electromagnet 37, and the second electromagnet 8 is sleeved on the outer wall of the rotating shaft 18.

[0041] The anti-fall plate 19 is used to prevent the direct connection between the output shaft of the second motor 16 and the brush body from generating downward gravitational pull, thereby improving the service life of the second motor 16. The waterproof conductive slip ring 22 adopts the IP68 protection level and can stably supply power in the high-pressure water spray environment, avoiding short circuit failure caused by water ingress in traditional brushes.

[0042] Please refer to the appendix. Figure 1-2 The height adjustment mechanism includes a horizontally arranged mounting plate 39, on which a vertical support arm 34 is provided. A horizontal arm 23 is rotatably connected to one end of the support arm 34 away from the mounting plate 39. A first hydraulic cylinder 35 is rotatably connected to the mounting plate 39. The end of the first hydraulic cylinder 35 away from the mounting plate 39 is rotatably connected to the outer wall of the horizontal arm 23 in the extension direction. The end of the horizontal arm 23 away from the support arm 34 is connected to the mounting block 17.

[0043] Below the mounting plate 39, there is a horizontal support plate 36 connected to the connecting plate 32, and a plurality of ball bearings are embedded on the side of the mounting plate 39 near the support plate 36.

[0044] The support plate 36 serves to support the mounting plate 39 and prevent it from falling. The extension and retraction of the first hydraulic cylinder 35 drives the horizontal arm 23 to move towards or away from the ground, thereby adjusting the height of the brush body. The ball bearing supports reduce the sliding friction between the mounting plate 39 and the support plate 36.

[0045] Please refer to the appendix. Figure 1-2 The angle adjustment mechanism includes a first rotating connector 25 rotatably disposed at one end of the horizontal arm 23 away from the support arm 34. The side of the first rotating connector 25 away from the horizontal arm 23 is connected to the mounting block 17. The rotation direction of the first rotating connector 25 is longitudinal rotation. It also includes a second hydraulic cylinder 24 that is rotatably connected to the cross arm 23, and the end of the second hydraulic cylinder 24 that is away from the cross arm 23 is rotatably connected to the lower side wall of the mounting block 17.

[0046] The second hydraulic cylinder 24 extends and retracts to adjust the angle of the mounting block 17, thereby adjusting the vertical angle of the roller brush body. Because the roller brush body will tilt when the first hydraulic cylinder 35 drives the roller brush body to rise, it is necessary to adjust the angle of the roller brush body to make the roller brush body perpendicular to the ground, so that the roller brush body can brush the guardrail.

[0047] Please refer to the appendix. Figure 3-4 The lateral movement mechanism includes a second rotating connector 33, which is used to rotatably connect the support arm 34 to the connecting plate 32. The rotation direction of the second rotating connector 33 is lateral rotation. A third hydraulic cylinder 31 is rotatably connected to the outer wall of the support arm 34. The end of the third hydraulic cylinder 31 opposite to the support arm 34 is rotatably connected to the connecting plate 32.

[0048] The third hydraulic cylinder 31 extends and retracts to drive the roller brush body to rotate around the second rotating connector 33 as the axis, so that the roller brush body is close to the guardrail. The third hydraulic cylinder 31 drives the support arm 34 to rotate laterally, realizing the lateral adjustment of the roller brush within a range of ±300mm, with a positioning accuracy of ±2mm, which can flexibly adapt to the lateral offset of the guardrail and the vehicle (such as deviation caused by uneven road surface). The lateral rotation design of the second rotating connector 33 allows the roller brush to adapt to the ±15° installation angle deviation of the guardrail, avoiding excessive wear on one side of the brush bristles. The contact pressure between the roller brush and the guardrail can be controlled (50-100N) without manual intervention, ensuring cleaning effect while reducing brush bristle wear.

[0049] Please refer to the appendix. Figure 1-2 The distance between the rotational connection point of the first hydraulic cylinder 35 and the horizontal arm 23 and the rotational connection point of the support arm 34 and the horizontal arm 23 is greater than or equal to half the length of the horizontal arm 23.

[0050] A stable triangular lever arm is provided by the lifting hydraulic cylinder, and the three fulcrums form an equilateral triangle, which improves the vibration resistance during high-speed operation.

[0051] The specific operation method of this utility model is as follows: Fix the connecting plate 32 of the device to the side of the maintenance vehicle (or a special bracket) to ensure the stability of the overall structure.

[0052] Input the initial parameters through the control system of the work vehicle (or the control panel of the device): preset the initial height (e.g., 0.8-1.1 meters for roadbed section) and the initial distance between the roller brush and the guardrail (usually 5-10cm) according to the current guardrail type (e.g., roadbed section, bridge section), and start the sensor system (e.g., laser rangefinder) to monitor the guardrail height and surface morphology in real time.

[0053] Turn on the main power supply, and the second motor 16 of the rotating mechanism drives the rotating shaft 18 to rotate, which in turn drives the roller brush body to rotate at a preset speed (such as 300-500 r / min); at the same time, start the water sprayer 3, and spray high-pressure water flow onto the surface of the guardrail through the nozzle (the water pressure can be adjusted according to the degree of dirt on the guardrail, usually 0.5-1.0 MPa) to pre-wet the dirt.

[0054] When the working vehicle enters the roadbed section (guardrail height 0.8-1.1 meters), the first hydraulic cylinder 35 of the height adjustment mechanism is in the retracted state, the cross arm 23 remains in a low position, and the initial height of the roller brush body matches the guardrail of the roadbed section.

[0055] When it is necessary to clean the ultra-high guardrail, the output shaft of the first hydraulic cylinder 35 extends, the first motor 5 of the length adjustment component starts, drives the lead screw 7 to rotate, drives the two threaded sleeves 10 to move synchronously along the axial direction of the lead screw 7, and then pulls the second brush rod 2 to slide along the first groove 4 of the first brush rod 1, so that the second brush rod 2 slides towards the side closer to the ground, thereby realizing the adjustment of the overall length of the roller brush body.

[0056] After the length is adjusted to the correct position, the positioning component is automatically activated: the second electromagnet 8 is energized to generate the same magnetic poles as the first electromagnet 37, and the repulsive force pushes the first electromagnet 37 to overcome the spring force of the spring 9 and move it towards the third groove 13, so that the first protrusion 15 engages with the second protrusion 12 on the metal plate 11; at the same time, the first electromagnet 37 is energized to attract the metal plate 11, which enhances the locking strength and ensures that the first brush rod 1 and the second brush rod 2 do not slip during the high-speed rotation of the roller brush body.

[0057] When the height adjustment mechanism drives the roller brush body to rise and fall, the second hydraulic cylinder 24 of the angle adjustment mechanism responds in real time: the second hydraulic cylinder 24 extends and pushes the mounting block 17 to rotate longitudinally around the first rotating connector 25, so that the roller brush body always remains perpendicular to the guardrail surface and avoids cleaning blind spots.

[0058] During operation, if the lateral distance between the guardrail and the vehicle changes (such as the vehicle deviating due to uneven road surface), the third hydraulic cylinder 31 of the lateral movement mechanism is activated: with the second rotating connector 33 as the axis, it pushes the support arm 34 to rotate laterally, causing the roller brush body to move closer to or away from the guardrail, ensuring that the contact pressure between the bristles and the guardrail surface is stable, thus ensuring the cleaning effect and avoiding excessive wear on the bristles.

[0059] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An improved device for cleaning a highway cement concrete guard rail, characterized in that, It includes a vertically arranged connecting plate, on which a roller brush body, a rotating mechanism, an angle adjustment mechanism, a height adjustment mechanism, a lateral movement mechanism, and a water sprayer are provided; The roller brush body includes a first brush rod and a second brush rod arranged in parallel, the first brush rod and the second brush rod being slidably connected; the first brush rod is provided with a length adjustment component for driving the second brush rod to slide along the extension direction of the first brush rod; the length adjustment component is used to adjust the overall length of the roller brush body by adjusting the relative position of the second brush rod and the first brush rod; the first brush rod and the second brush rod are respectively provided with multiple bristles distributed on their outer walls away from the second brush rod and away from the outer walls of the first brush rod. The rotating mechanism is used to drive the roller brush body to rotate; the angle adjusting mechanism is used to adjust the rotation angle of the roller brush body; the height adjusting mechanism is used to adjust the height of the roller brush body; the lateral movement mechanism is used to drive the roller brush body to move laterally; and the water sprayer is used to spray water onto the cleaning surface.

2. The improved device for cleaning the cement concrete guard bar of the highway according to claim 1, wherein, The first brush rod has a first groove extending and recessed along the extension direction of the first brush rod on the side near the second brush rod. The length adjustment assembly includes a first motor disposed in the first groove. The output shaft of the first motor is connected to a lead screw. The extension direction of the lead screw is the same as the extension direction of the first brush rod. Two threaded sleeves are fitted on the lead screw and engaged for rotation. The side of the threaded sleeve away from the first groove is connected to the second brush rod. The two threaded sleeves are connected by a connecting strip on the side near the first groove. The length adjustment assembly also includes a positioning component for fixing the position between the first brush rod and the second brush rod.

3. The improved device for cleaning the cement concrete guard bar of the highway according to claim 2, wherein, The connecting strip has a second groove recessed on the side near the bottom of the first groove. A third groove is formed by the corresponding recessed bottom of the first and second grooves. The positioning component includes a first electromagnet slidably disposed in the second groove. The first electromagnet has multiple springs on the side near the bottom of the second groove. The springs are used to drive the first electromagnet to be housed in the second groove. Multiple second electromagnets are disposed at the bottom of the second groove. Multiple first protruding teeth are disposed on the side of the first electromagnet away from the bottom of the second groove. The extension direction of the first protruding teeth is perpendicular to the extension direction of the first brush rod. A metal plate is disposed in the third groove. Multiple second protruding teeth are disposed on the side of the metal plate away from the bottom of the third groove for meshing with the multiple first protruding teeth.

4. The improved highway cement concrete guardrail cleaning device according to claim 3, characterized in that, The first brush rod has a sliding plate on the side near the second brush rod, and a sliding rod on the side of the sliding plate away from the first brush rod. The sliding rod has a circular cross-section and its diameter is greater than the thickness of the sliding plate. The second brush rod has a recessed first groove on the side near the first brush rod for the sliding plate to slide in, and a second groove for the sliding rod to slide in the bottom of the first groove. The extension direction of the slide bar and the extension direction of the slide plate are in the same direction as the extension direction of the first brush bar, and the first slide groove and the second slide groove both penetrate through both ends of the second brush bar.

5. The improved device for cleaning the cement concrete guard bar of the highway as claimed in claim 4, wherein The outer wall of the slide bar is recessed at intervals to form multiple receiving grooves. A roller is rotatably installed in each receiving groove. The roller protrudes from the receiving groove and contacts the groove wall of the second slide groove. The outer wall of the roller is covered with a rubber layer.

6. The improved device for cleaning the cement concrete guard bar of the highway as claimed in claim 5, wherein The rotating mechanism includes a mounting block with a recessed mounting groove. A second motor is installed in the mounting groove. A rotating shaft is rotatably mounted through the bottom of the mounting groove. A fall arrestor plate is located at one end of the rotating shaft and contacts the bottom of the mounting groove. The output shaft of the second motor is connected to the side of the fall arrestor plate away from the rotating shaft. A connecting block is located at the end of the rotating shaft away from the fall arrestor plate. The side of the connecting block away from the rotating shaft is connected to one end of the first vertical rod. A waterproof conductive slip ring for supplying power to the first motor, the first electromagnet, and the second electromagnet is sleeved on the outer wall of the rotating shaft.

7. The improved device for cleaning the cement concrete guard bar of the highway as claimed in claim 1 wherein, The height adjustment mechanism includes a horizontally arranged mounting plate, a vertically arranged support arm on the mounting plate, a horizontal arm rotatably connected to the end of the support arm away from the mounting plate, a first hydraulic cylinder rotatably connected to the mounting plate, the end of the first hydraulic cylinder away from the mounting plate being rotatably connected to the outer wall of the horizontal arm in the extension direction, and the end of the horizontal arm away from the support arm being connected to the mounting block. A support plate connected to the connecting plate is provided horizontally below the mounting plate, and multiple ball bearings are embedded on the side of the mounting plate near the support plate.

8. The improved device for cleaning the cement concrete guard bar of the highway as claimed in claim 1 wherein, The angle adjustment mechanism includes a first rotating connector rotatably disposed at one end of the cross arm away from the support arm, and the side of the first rotating connector away from the cross arm is connected to the mounting block; the rotation direction of the first rotating connector is longitudinal rotation. It also includes a second hydraulic cylinder that is rotatably connected to the cross arm, the end of the second hydraulic cylinder opposite to the cross arm being rotatably connected to the lower side wall of the mounting block.

9. The improved device for cleaning the cement concrete guard bar of the highway as claimed in claim 8, wherein The lateral movement mechanism includes a second rotating connector, which is used to rotatably connect the support arm to the connecting plate. The rotation direction of the second rotating connector is lateral rotation. A third hydraulic cylinder is rotatably connected to the outer wall of the support arm. The end of the third hydraulic cylinder opposite to the support arm is rotatably connected to the connecting plate.

10. The improved device for cleaning the cement concrete guard bar of the highway as claimed in claim 7, wherein The distance between the rotational connection point of the first hydraulic cylinder and the horizontal arm and the rotational connection point of the support arm and the horizontal arm is greater than or equal to half the length of the horizontal arm.

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