Road guardrail cleaning device and guardrail cleaning vehicle

Abstract

The invention discloses a road guardrail cleaning device and a guardrail cleaning vehicle, the cleaning device comprises a pair of sliding parts, a cleaning part and a water spraying part, the pair of sliding parts is driven to be close to or far away from each other, and driving shafts located on the sliding parts are driven to rotate; the cleaning component is provided with an auxiliary cleaning assembly and a cleaning cylinder which moves relative to the axis of the driving shaft and is limited in the circumferential direction, and the cleaning cylinder is provided with a cleaning part for cleaning the guardrail under the elastic force towards the sliding part; the input end of a transmission assembly in the auxiliary washing assembly is connected with a driving shaft, the output end of the transmission assembly is connected with a disc body, the disc body, a connecting rod and a jacking rod form a slider-crank mechanism, and the jacking rod moves to drive a washing barrel to axially move relative to the driving shaft; the guardrail cleaning device is simple and compact in structure, the cleaning barrel can move up and down relative to the driving shaft to vertically clean the guardrail while the cleaning barrel rotates to clean the guardrail, the single cleaning action of the cleaning barrel and dust remaining on the guardrail are avoided, the guardrail cleaning device is suitable for different guardrails, and the cleaning effect is more obvious.

Description

TECHNICAL FIELD

[0001] The present application relates to road guardrail cleaning technology, belongs to waste removal field, and particularly relates to a road guardrail cleaning device and a guardrail cleaning vehicle. BACKGROUND

[0002] The guardrail can be installed in the middle of the road for separating opposite lanes, installed at the edge of the sidewalk for protecting pedestrians, and installed at sharp curves or steep slope sections for reducing the driving risk of out-of-control vehicles. The guardrail will be contaminated with a large amount of dust for a long time and needs to be cleaned frequently. The existing road guardrail cleaning mainly installs a cleaning mechanism on a cleaning vehicle through a mechanical arm. The mechanical arm first moves the cleaning mechanism close to the guardrail. High-pressure water flow is sprayed from the nozzle in the cleaning mechanism to the guardrail to wash the dirt on the guardrail. At the same time, the cleaning roller is driven to rotate and contacts the guardrail for washing. However, the stubborn stains on the guardrail are not easy to be fully washed. That is, the structures and shapes of the guardrails on various roads are different. The angle of the nozzle and the rotating action of the cleaning roller are single. The cleaning efficiency is not obvious by only adjusting the wet pressure and the rotating speed. Especially for the guardrail with a large vertical surface, the cleaning roller moves transversely with the cleaning vehicle. During the cleaning process, the dust is easy to remain on the transverse guardrail. In addition, the distance from the cleaning roller to the guardrails with different shapes is different. The brushes or cloths on the cleaning roller are easy to be worn differently and the cleaning effect on the guardrails is different. For example, the upper and lower parts of the guardrail have large sizes and the middle part is a small rod structure. When the cleaning roller is close to the guardrail, the brushes or cloths on the cleaning roller contact the guardrail differently. The brushes or cloths are worn differently or the cleaning effect on the guardrail is different. SUMMARY

[0003] The present application aims to provide a road guardrail cleaning device with a simple and compact structure. The cleaning cylinder can move up and down relative to the driving shaft while rotating to clean the guardrail. The single cleaning action of the cleaning cylinder and the dust remaining on the guardrail are avoided. The device is suitable for different guardrails and the cleaning effect is more obvious.

[0004] To achieve the above-mentioned purpose, the road guardrail cleaning device comprises: a pair of sliding members which slide longitudinally on the mechanical arm and are driven to move close to or away from each other. Each sliding member is provided with a driving shaft which is driven to rotate; a cleaning component which is located on each sliding member and has an auxiliary cleaning assembly and a cleaning cylinder which moves along the axis of the driving shaft and is circumferentially limited; the cleaning cylinder is subjected to the elastic force towards the sliding member and is provided with a cleaning member for cleaning the guardrail; the auxiliary cleaning assembly has a support box which is fixedly connected with the sliding member, a transmission assembly, a disc body, a connecting rod, and a pressing rod which are located in the support box; The input end of the transmission assembly is connected to the drive shaft, and the output end is connected to the disc body. The two ends of the connecting rod are movably connected to the disc body and one end of the push rod. The push rod is slidably connected to the support box and the sliding direction is consistent with the axis of the cleaning cylinder. The other end of the push rod is in contact with the cleaning cylinder. The transmission assembly drives the disc to rotate, forming a crank slider mechanism with the connecting rod and the push rod; the movement of the push rod drives the cleaning cylinder to move axially relative to the drive shaft; The water spray component is located on the lateral side of the robotic arm and is capable of spraying high-pressure water toward the guardrail.

[0005] In some examples of the present invention, the disc body is provided with a plurality of positioning holes of different diameters with the disc body rotation center as the center of the circle; The positioning rod is disassembled and installed on one of the positioning holes and is rotatably connected to one end of the connecting rod.

[0006] In some examples of the present invention, a roller is provided at one end of the push rod and contacts the cleaning cylinder through the roller. A positioning cylinder is threadedly connected to the end of the push rod close to the roller, and the positioning cylinder is located below the support box. A bottom plate and a second elastic member are installed on one end of the driving shaft away from the sliding member; the second elastic member contacts the cleaning cylinder and the bottom plate respectively, so that the cleaning cylinder moves axially and contacts the roller elastically.

[0007] In some examples of the present invention, the cleaning cylinder includes a cylinder member and a support plate; Slots are evenly distributed around the circumference of the cylinder, and each slot is arranged along the axial direction of the cylinder; a support plate that matches the guardrail profile is slidably removed and installed in the slot on one side, and a cleaning piece is arranged on the other side; The support plate in the same slot hole can be composed of multiple cleaning blocks connected together.

[0008] In some examples of the present invention, a plurality of nozzles are provided between adjacent support plates, and the plurality of nozzles are spaced apart along the axial direction of the cleaning cylinder; One end of the nozzle is connected to a rotary joint located on the support box through a conduit, and the rotary joint is connected to a high-pressure water source.

[0009] In some examples of the present invention, the robotic arm is provided with a fixing frame and a second driving member; The second driving member is installed on the fixed frame, the telescopic end is movably connected to one end of the arm assembly, and the other end of the arm assembly is movably connected to the sliding member; Among them, a pair of support arm assemblies are arranged in an "eight" shape structure.

[0010] In some examples of the present invention, the cleaning cylinder is provided with a plurality of guide rod components spaced apart along its axial direction; Each guide rod component has a guide rod capable of radial movement; the guide rod is forced away from the axis of the cleaning cylinder, and one end of the guide rod extends to the outside of the cleaning cylinder; When the guide rod is forced to move close to the axis of the cleaning cylinder, the corresponding arm assembly of the cleaning cylinder is elongated to drive the sliding member to move laterally outward; when the guide rod is forced to move away from the axis of the cleaning cylinder, the corresponding arm assembly of the cleaning cylinder is shortened to drive the sliding member to move laterally inward.

[0011] In some examples of the present application, the arm assembly has a second cylinder, a first arm, and a second arm; One end of the second arm is rotationally connected to the telescopic end of the second driving member, and the other end is fixedly connected to the second cylinder; one end of the first arm is rotationally connected to the sliding member, and the other end has a piston that divides the second cylinder into two cavities; The guide rod component also has a first cylinder fixed on the cleaning cylinder, and a piston at one end of the guide rod divides the first cylinder into two cavities; The cavity in the first cylinder close to the axis of the cleaning cylinder is in communication with the cavity in the second cylinder close to the second driving member and is closed and filled with oil, so that the first arm is linked to retract and elongate when the guide rod is elongated and retracted; The cavity in the second cylinder close to the second driving member is under certain pressure to make the guide rod move away from the axis of the cleaning cylinder.

[0012] In some examples of the present application, a rotary joint is provided on the support box; The cavity close to the axis of the cleaning cylinder is in communication with the movable end of the rotary joint through a conduit, the fixed end of the rotary joint is connected to an oil source, and the oil source is connected to the cavity close to the second driving member; A first elastic member is provided in the cavity of the second cylinder away from the second driving member or outside the sliding member, and under the action of the first elastic member, the guide rod is forced away from the axis of the cleaning cylinder.

[0013] The present application also aims to provide a guardrail cleaning vehicle, in which the cleaning cylinder can move up and down relative to the driving shaft to clean the guardrail vertically, avoid single cleaning action of the cleaning cylinder, and avoid dust remaining on the guardrail, and the cleaning effect is more obvious; in addition, the guide rod and the arm assembly are linked to make the cleaning cylinder close to the guardrail to actively avoid, avoid extrusion contact between the cleaning cylinder and the guardrail to cause corresponding damage, and improve the safety of cleaning.

[0014] A guardrail cleaning vehicle, comprising: a mobile vehicle body, a mechanical arm, and the road guardrail cleaning device described above; The mechanical arm is installed on the mobile vehicle body and can rotate and move in space; The road guardrail cleaning device is installed on the mechanical arm.

[0015] Compared with the prior art, the road guardrail cleaning device drives the sliding members to move close to or away from each other, so that a pair of cleaning components are attached to the two sides of the guardrail, the water spraying component sprays water on the guardrail, the driving shaft is driven to rotate, on the one hand, the driving shaft drives the cleaning cylinder to rotate, so that the cleaning cylinder rotates around the axis to clean the guardrail, on the other hand, the driving shaft drives the crank slider mechanism to move through the transmission assembly, under the action of the pressing rod, the cleaning cylinder can move up and down relative to the driving shaft to clean the guardrail vertically, avoiding the single cleaning action of the cleaning cylinder and the dust remaining on the guardrail, and the cleaning effect is more obvious. Since the support plates matched with the profile of the guardrail are detachably installed in the groove holes of the cleaning cylinder, and the support plates in the same groove hole can be composed of a plurality of cleaning blocks in abutment, the corresponding support plates are selected according to the profile shape of the guardrail, the distance from the cleaning pieces on the support plates to the guardrail is substantially the same, and the attachment degree is better, so as to avoid excessive local wear of the cleaning pieces during cleaning, and the cleaning effect is more uniform. Since a plurality of guide rod components are arranged in the axial direction of the cleaning cylinder between adjacent support plates, when the guardrail deviates and approaches one of the cleaning cylinders, the guide rod on the cleaning cylinder first contacts and extrudes the guardrail to move close to the axis of the cleaning cylinder, at this time, the support arm assembly corresponding to the cleaning cylinder is elongated to drive the sliding member to move laterally outward, the cleaning cylinder moves outward to relatively move away from the guardrail, reduces the extrusion of the guide rod by the guardrail, and avoids further contact between the cleaning cylinder and the guardrail. Therefore, through the linkage of the guide rod and the support arm assembly, the cleaning cylinder close to the guardrail can actively move away to avoid, avoiding extrusion and contact between the cleaning cylinder and the guardrail to cause corresponding damage, and improving the safety of cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall schematic view of the road guardrail cleaning device; Figure 2 is the schematic view of the sliding member driven to move in the present application; Figure 3 is the schematic view of the cleaning component in the present application; Figure 4 is the schematic view of the auxiliary cleaning assembly in the present application; Figure 5 is the schematic view of the disc body in the present application; Figure 6 is the schematic view of the assembly between the support plate and the cylinder piece in the present application; Figure 7 is the front view of the cleaning cylinder in the present application; Figure 8 is Figure 7 is the local enlarged view of position C in the present application; Figure 9 is the schematic view of the cavity close to the axis of the cleaning cylinder in the first cylinder body and the cavity close to the second driving member in the second cylinder body in the present application; Fig. 10, mechanical arm; 20, sliding member, 21, first driving member, 22, driving shaft; 30, cleaning component, 31, cleaning cylinder, 32, slot hole, 33, support plate, 34, cleaning member, 35, cylinder member; 41, guide rod, 42, first cylinder body; 51, fixing frame, 52, second driving member, 53, support arm assembly, 531, second cylinder body, 532, first support arm, 533, second support arm, 54, first elastic member; 60, auxiliary cleaning assembly, 61, support box, 62, first bevel gear, 63, second bevel gear, 64, disc body, 641, positioning hole, 642, positioning rod, 65, connecting rod, 66, pressing rod, 67, second elastic member, 68, bottom plate, 69, positioning cylinder; 70, rotary joint; 80, oil source. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the technical scheme of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the embodiments of the present application. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0018] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms "first", "second", and similar terms used in the specification and claims of the present patent application do not necessarily mean any order, number, or importance, but are only used to distinguish different components. Similarly, the terms "one" or "a" or similar terms do not necessarily mean a quantity limitation. The terms "include" or "contain" or similar terms mean that the elements or objects before the term cover the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms "connected" or "connected" or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like only represent relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0019] As Figures 1 to 4 shown, the road guardrail cleaning device comprises: A pair of slides 20 are longitudinally slidably disposed on the robot arm 10 and driven to move toward or away from each other; each slide 20 is provided with a drive shaft 22 that is driven to rotate; The cleaning component 30 is located on each sliding member 20 and has an auxiliary washing assembly 60 and a cleaning cylinder 31 that moves axially with the drive shaft 22 and is circumferentially limited; The cleaning cylinder 31 is provided with a cleaning member 34 for cleaning the guardrail and is subject to elastic force toward the sliding member 20; The auxiliary washing assembly 60 comprises a support box 61 fixedly connected to the sliding member 20, and a transmission assembly, a disc 64, a connecting rod 65, and a pressing rod 66 located in the support box 61; The input end of the transmission assembly is connected to the drive shaft 22, and the output end is connected to the disc 64. The two ends of the connecting rod 65 are movably connected to the disc 64 and one end of the push rod 66. The push rod 66 is slidably connected to the support box 61 and the sliding direction is consistent with the axis of the cleaning cylinder 31. The other end of the push rod 66 is in contact with the cleaning cylinder 31. The disc 64 rotates to form a crank slider mechanism with the connecting rod 65 and the push rod 66; the movement of the push rod 66 drives the cleaning cylinder 31 to move axially relative to the drive shaft 22; a water spray component, located on the lateral side of the robotic arm 10 and capable of spraying high-pressure water toward the guardrail; Specifically, such as Figure 1 As shown, the moving direction of the cleaning vehicle is horizontal, the direction close to the guardrail is inside, and the direction away from the guardrail is outside, and the axis of the cleaning cylinder 31 and the drive shaft 22 are arranged vertically for description; The robotic arm 10 is mounted on the cleaning vehicle and is capable of moving within a certain range so that a pair of sliding members 20 are located on both sides of the guardrail; The sliding member 20 moves longitudinally on the robot arm 10 through the slide rail and can be located on both sides of the guardrail; Figure 1 As shown, the upper end of the drive shaft 22 is connected to the first drive member 21, and the lower end extends downward. The first drive member 21 can be a motor. When the first drive member 21 is started, it can drive the drive shaft 22 to rotate and adjust the corresponding speed. In the cleaning component 30, the cleaning cylinder 31 and the drive shaft 22 are axially movable and circumferentially limited. It can be understood that the cleaning cylinder 31 and the drive shaft 22 are connected by splines and flat keys to ensure that the drive shaft 22 drives the cleaning cylinder 31 to rotate together and can move axially; The auxiliary washing assembly 60 is used to drive the washing cylinder 31 to move axially relative to the drive shaft 22, that is, during the self-rotating cleaning process of the washing cylinder 31, the washing cylinder 31 can move up and down to perform auxiliary cleaning; The support box 61 can protect some parts and provide necessary mounting support; the transmission assembly can have a first bevel gear 62 mounted on the driving shaft 22, a second bevel gear 63 meshed with the first bevel gear 62, or other gears for speed reduction and torque increase or direction change; the disc body 64 is coaxially connected with the second bevel gear 63; the connecting rod 65 is connected at both ends to a certain position of the disc body 64 and the upper end of the pressing rod 66, forming a crank slider mechanism; when the driving shaft 22 rotates, the disc body 64 is driven to rotate through the transmission assembly; the connecting rod 65 rotates around the disc body 64 while driving the pressing rod 66 to slide up and down; the stroke of the pressing rod 66 is the diameter at which the connecting rod 65 is connected to the disc body 64; the lower end of the pressing rod 66 is in rolling contact with the cleaning cylinder 31; preferably, the lower end of the pressing rod 66 is provided with a roller; in the initial state, the cleaning cylinder 31 is subjected to the elastic force towards the sliding member 20, so that the cleaning cylinder 31 can be in close contact with the lower end of the pressing rod 66; when the pressing rod 66 moves up and down, it can drive the cleaning cylinder 31 to move up and down relative to the driving shaft 22; The water spraying component sprays high-pressure water towards the guardrail to complete the functions of preliminary wetting and flushing; the water spraying component is a prior art and will not be further described here; The road guardrail cleaning device drives the sliding members 20 to move closer to or away from each other, so that a pair of cleaning components 30 are attached to the two sides of the guardrail; the water spraying component sprays water to wet and flush the guardrail; the driving shaft 22 is driven to rotate, on the one hand, the driving shaft 22 drives the cleaning cylinder 31 to rotate, so that the cleaning cylinder 31 rotates to clean the guardrail (relative to the horizontal direction); on the other hand, the driving shaft 22 drives the crank slider mechanism to move through the transmission assembly; under the action of the pressing rod 66, the cleaning cylinder 31 can move up and down relative to the driving shaft 22 to clean the guardrail vertically; the single cleaning action of the cleaning cylinder 31 and the residue of dust on the guardrail are avoided; the device can be applied to guardrails of different shapes and has more obvious cleaning effect.

[0020] In some examples of the present application, as shown in Figure 5 The disc body 64 is provided with a plurality of positioning holes 641 of different diameters; The positioning rod 642 is detachably mounted in one of the positioning holes 641 and is rotationally connected with one end of the connecting rod 65; Specifically, the positioning rod 642 is screwably mounted in the positioning hole 641 and is rotationally connected with the connecting rod 65 through a bearing; the disc body 64 is provided with a plurality of positioning holes 641 of different diameters; a suitable positioning hole 641 can be selected to adjust the stroke of the pressing rod 66, i.e. to adjust the up-and-down movement stroke of the cleaning cylinder 31; In some examples of the present application, as shown in Figure 5 , Figure 8As shown, the push rod 66 is in rolling contact with the cleaning cylinder 31 through the roller, and the end of the push rod 66 close to the roller is threadedly connected to the positioning cylinder 69, and the positioning cylinder 69 is located below the support box 61; A bottom plate 68 and a second elastic member 67 are mounted on the end of the drive shaft 22 away from the sliding member 20; the second elastic member 67 contacts the cleaning cylinder 31 and the bottom plate 68 respectively, so that the cleaning cylinder 31 moves axially and elastically contacts the roller; Specifically, when cleaning the guardrail up and down, the position of the positioning cylinder 69 on the pressing rod 66 is adjusted so that it does not affect the action of the crank slider mechanism in the auxiliary washing assembly 60. When the guardrail does not need to be cleaned up and down, the positioning cylinder 69 is rotated to press against the bottom end of the support box 61, and the connecting rod 65 is removed. At this time, the movement of the disc 64 cannot drive the pressing rod 66 to move up and down. At the same time, the upper and lower parts of the washing cylinder 31 are correspondingly limited by the pressing rod 66 and the second elastic member 67, without affecting the rotation of the washing cylinder 31. Alternatively, a sleeve may be added to the drive shaft 22. When the guardrail does not need to be cleaned up and down, the lower end of the sleeve contacts the cleaning cylinder 61, and the connecting rod 65 is removed. At this time, the movement of the disc 64 cannot drive the push rod 66 to move up and down. At the same time, the upper and lower parts of the cleaning cylinder 31 are respectively restrained by the action of the sleeve and the second elastic member 67, without affecting the rotation of the cleaning cylinder 31. In this example, by disassembling and assembling the connecting rod 65 and adjusting the position of the positioning block according to the use environment, it is possible to select whether the cleaning cylinder 31 moves up and down to perform vertical cleaning on the guardrail.

[0021] In some examples of the present invention, Figure 3 、 Figure 6 As shown, the cleaning cylinder 31 includes a cylinder member 35 and a support plate 33; The cylinder 35 is evenly distributed with slots 32 along its circumference, and each slot 32 is arranged along the axial direction of the cleaning cylinder 31; a support plate 33 that matches the profile of the guardrail is slidably removable on one side and installed in the slot 32, and a cleaning member 34 is arranged on the other side; Among them, the support plate 33 in the same slot 32 can be composed of multiple cleaning blocks connected together; Specifically, the cleaning cylinder 31 may be provided with eight slots 32 in the circumference thereof; A snap-fit ​​structure may be provided at the upper and lower ends of the slotted hole 32, or the lower end of the slotted hole 32 may be closed and the upper end may be provided with a snap-fit ​​structure. When the support plate 33 is slidably positioned in the slotted hole 32, the snap-fit ​​structure may quickly position the support plate 33. Alternatively, a plurality of threaded holes may be provided on the cylinder 35 near the slotted hole 32, and a screw may pass through the support plate 33 and be threadedly installed on the cylinder 35, thereby realizing the assembly and disassembly of the support plate 33 in the slotted hole 32. The cleaning member 34 can be a brush / cloth that can act directly on the guardrail; the cleaning blocks in the same slot 32 can be spliced ​​to form a support plate 33, for example, the cleaning block has a protrusion at the upper end and a groove matching the protrusion at the lower end, and multiple cleaning blocks are slidably installed in the slot 32, and the upper and lower adjacent cleaning blocks are spliced ​​and positioned by matching the protrusions with the grooves; The cleaning parts 34 of the middle part are larger and the cleaning parts 34 of the middle part are larger, so that the cleaning parts 34 of the middle part can be cleaned more evenly. Or in terms of shape, the cleaning block adopts the same outer contour size, and the cleaning parts 34 on the cleaning block can be adjusted according to the guardrails of different contour shapes. However, in this way, the number of brush / cloth structure cleaning parts 34 is relatively large. When the cleaning parts 34 need to match the structure of the guardrail, it is more difficult to handle the cleaning parts 34.

[0022] In some examples of the present invention, a plurality of nozzles are provided between adjacent support plates 33 , and the plurality of nozzles are spaced apart along the axial direction of the cleaning cylinder 31 ; One end of the nozzle is connected to a rotary joint 70 located on the support box 61 through a conduit, and the rotary joint 70 is connected to a high-pressure water source; Specifically, 4-10 nozzles may be provided between adjacent support plates 33. A rotary joint 70 is sleeved on the outside of the drive shaft 22 for transmitting liquid between the cleaning cylinder 31 (rotating component) and the support box 61 (fixed component). This is an existing structure and will not be further elaborated here. The high-pressure water source may be the same as that of the water spraying component. When the cleaning cylinder 31 rotates to clean the guardrail, the high-pressure water source enters the nozzle through the rotary joint 70 and sprays out. The nozzle can flush the cleaning part 34 on the support plate 33 to achieve the self-cleaning effect and avoid excessive dust on the cleaning part 34 affecting the cleaning of the guardrail.

[0023] In some examples of the present invention, Figure 2 As shown, the mechanical arm 10 is provided with a fixing frame 51 and a second driving member 52; The second driving member 52 is movably connected to one end of the support arm assembly 53 at the telescopic end of the fixing frame 51, and the other end of the support arm assembly 53 is movably connected to the sliding member 20. The pair of support arm assemblies 53 are arranged in an "eight" shape. Specifically, the fixing frame 51 is used for supporting the second driving member 52. The second driving member 52 can be a hydraulic cylinder, and the telescopic end of the second driving member 52 drives the pair of support arm assemblies 53 to move, so as to realize the mutual approach and separation of the pair of sliding members 20 on the mechanical arm 10.

[0024] In some examples of the present application, as shown in Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 A plurality of guide rod components are arranged between the adjacent support plates 33 and are spaced along the axial direction of the cleaning cylinder 31. Each guide rod component has a guide rod 41 capable of moving radially; the guide rod 41 is forced to move away from the axis of the cleaning cylinder 31 and extends to the outside of the cleaning cylinder 31 at one end. When the guide rod 41 is pressed to move close to the axis of the cleaning cylinder 31, the corresponding support arm assembly 53 of the cleaning cylinder 31 is elongated to drive the sliding member 20 to move transversely outward; when the guide rod 41 is forced to move away from the axis of the cleaning cylinder 31, the corresponding support arm assembly 53 of the cleaning cylinder 31 is shortened to drive the sliding member 20 to move transversely inward. Specifically, due to the driving path of the vehicle to be cleaned and the arrangement of the guardrails, in the process of cleaning the guardrails, the cleaning cylinder 31 is easily pressed into contact with the guardrail, causing damage to the cleaning cylinder 31 or the guardrail. The traditional structure is to arrange the cleaning cylinder 31 elastically, that is, the cleaning cylinder 31 is elastically moved outward after being pressed by the guardrail. Although this can avoid hard contact between the cleaning cylinder 31 and the guardrail, elastic contact still cannot avoid wear between them, especially in the case of self-rotation of the cleaning cylinder 31. In the initial state of the present example, the guide rod 41 is radially outward away from the axis of the cleaning cylinder 31, and the pair of cleaning cylinders 31 are located on both sides of the guardrail for cleaning. When the guardrail deviates and approaches one of the cleaning cylinders 31, the guide rod 41 on the cleaning cylinder 31 first contacts and is pressed to move close to the axis of the cleaning cylinder 31. At this time, the corresponding support arm assembly 53 of the cleaning cylinder 31 is elongated to drive the sliding member 20 to move transversely outward. The cleaning cylinder 31 moves outward to relatively move away from the guardrail, reduces the pressing of the guide rod 41 by the guardrail, and avoids further contact between the cleaning cylinder 31 and the guardrail. The present example can drive the cleaning cylinder 31 close to the guardrail to actively move away by the linkage of the guide rod 41 and the support arm assembly 53, so as to avoid the pressing contact between the cleaning cylinder 31 and the guardrail, thereby improving the safety of cleaning.

[0025] In some examples of the present application, as shown in Figure 2、 Figure 9 The support arm assembly 53 has a second cylinder 531, a first support arm 532, and a second support arm 533, as shown in the figure. One end of the second support arm 533 is rotatably connected to the telescopic end of the second driving member 52, and the other end is fixedly connected to the second cylinder 531. One end of the first support arm 532 is rotatably connected to the sliding member 20, and the other end divides the second cylinder 531 into two cavities. The guide rod component also has a first cylinder 42 fixed on the cleaning cylinder 31, and a piston at one end of the guide rod 41 divides the first cylinder 42 into two cavities. The cavity in the first cylinder 42 close to the axis of the cleaning cylinder 31 is in communication with the cavity in the second cylinder 531 close to the second driving member 52, and the cavity in communication has oil, so that the first support arm 532 is correspondingly retracted and extended when the guide rod 41 is extended and retracted. The cavity in the second cylinder 531 close to the second driving member 52 is under certain pressure, so that the guide rod 41 is away from the axis of the cleaning cylinder 31. In some examples of the present application, as shown in the figure, Figure 7 、 Figure 9 The support box 61 is provided with a rotary joint 70. The cavity close to the axis of the cleaning cylinder 31 is in communication with the movable end of the rotary joint 70 through a conduit, and the fixed end of the rotary joint 70 is connected to an oil source 80, which is further connected to the cavity close to the second driving member 52. A first elastic member 54 is arranged in the cavity in the second cylinder 531 away from the second driving member 52 or outside the sliding member 20, and under the action of the first elastic member 54, the guide rod 41 is away from the axis of the cleaning cylinder 31 by elastic force. Specifically, for convenience of description, the cavity in the first cylinder 42 close to the axis of the cleaning cylinder 31 is cavity A, the cavity away from the axis of the cleaning cylinder 31 is cavity a, the cavity in the second cylinder 531 close to the second driving member 52 is cavity B, and the cavity away from the second driving member 52 is cavity b. In the initial state, the cavity A is away from the axis of the cleaning cylinder 31 under certain oil pressure, at this time the cavity B is in a compressed state and the cavity A is in an expanded state, for example, the first elastic member 54 is arranged in the cavity b or outside the sliding member 20, and under the action of the first elastic member 54, the first support arm 532 extrudes the cavity B to make the oil enter the cavity A, thereby driving the guide rod 41 to move away from the axis of the cleaning cylinder 31 and be able to preferentially contact the guardrail. During the guardrail cleaning process, affected by the driving path of the cleaning vehicle and the arrangement of the guardrail, the guardrail deviates relative to the cleaning cylinder 31 and acts preferentially on the guide rod 41. The guide rod 41 is pressed and moves close to the axis of the cleaning cylinder 31, that is, the cavity A is in a compressed state, and the oil enters the oil source 80 through the conduit and the rotary joint 70, and then enters the corresponding cavity B through the oil source 80, causing the cavity B to expand and drive the first arm 532 to extend relative to the second cylinder 531. Since one end of the first arm 532 is rotatably connected to the sliding member 20, the sliding member 20 will move away from the guardrail, thereby driving the cleaning cylinder 31 to actively avoid contact with the guardrail. When the first arm 532 extends relative to the second cylinder 531, the first elastic member 54 is further compressed. When the guardrail does not act on the guide rod 41, under the action of the first elastic member 54, the oil flows from the cavity B into the oil source 80, and then from the oil source 80 into the rotary joint 70 and the cavity A, so that the guide rod 41 returns to its initial state. It can also be understood that the oil source 80 can serve as an oil pressure adjustment mechanism to ensure that the oil can flow smoothly between the cavity A and the cavity B under the pressure of the guide rod 41 and the action of the first elastic member 54. In addition, when the volume between cavity A and cavity B is changed by oil adjustment, in order to ensure the pressure balance in the cavity, cavity a and cavity b can be connected to the outside world, or cavity a and cavity b can be connected to each other through a conduit.

[0026] A guardrail cleaning vehicle comprises a mobile vehicle body, a mechanical arm 10, and the above-mentioned road guardrail cleaning device; The mobile vehicle body is a traditional cleaning vehicle; The road guardrail cleaning device is mounted on a robotic arm 10, which is capable of rotating and moving in space; In the normal, non-cleaning state, the robot arm 10 drives the road guardrail cleaning device to move onto the mobile vehicle body. When cleaning the guardrail, a suitable support plate 33 is selected in advance according to the contour of the guardrail and quickly installed on the cleaning cylinder 31. The robot arm 10 drives the pair of cleaning cylinders 31 in the road guardrail cleaning device to be positioned on both sides of the guardrail; the second driving member 52 in the road guardrail cleaning device drives the pair of sliding members 20 to move through the support arm assembly 53, so that the cleaning cylinders 31 are close to the guardrail; The mobile body moves along the direction in which the guardrail is arranged, and the water spray component is activated to wet and rinse the guardrail. The drive shaft 22 is driven to rotate. On the one hand, the drive shaft 22 drives the cleaning cylinder 31 to rotate, so that the cleaning cylinder 31 rotates to clean the guardrail (relatively horizontally). On the other hand, the drive shaft 22 drives the crank slider mechanism through the transmission assembly. Under the action of the push rod 66, the cleaning cylinder 31 can move up and down relative to the drive shaft 22 to clean the guardrail vertically. Affected by the travel path of the cleaning vehicle and the arrangement of the guardrail, when the guardrail deviates relative to the cleaning cylinder 31 and acts preferentially on the guide rod 41, the guide rod 41 moves toward the axis of the cleaning cylinder 31. At this time, the support arm assembly 53 corresponding to the cleaning cylinder 31 extends and drives the sliding member 20 to move laterally outward, so that the cleaning cylinder 31 moves outward relatively away from the guardrail, completing the active avoidance of the cleaning cylinder 31 and improving the safety of cleaning. After the guardrail is cleaned, the second drive member 52 drives the pair of slides 20 via the arm assembly 53, moving the cleaning cylinder 31 away from the guardrail. The robotic arm 10 then drives the road guardrail cleaning device to the mobile vehicle. While an exemplary embodiment of the road guardrail cleaning device proposed by the present invention has been described in detail above with reference to preferred embodiments, those skilled in the art will appreciate that various modifications and variations may be made to the aforementioned specific embodiments without departing from the spirit of the present invention, and that various combinations of the various technical features and structures proposed by the present invention may be made without departing from the scope of protection of the present invention, as defined by the appended claims.

Claims

1. A road guardrail cleaning device, characterized in that: include: A pair of sliding members (20) are longitudinally slidably disposed on the robotic arm (10) and driven to move closer to or farther from each other; each sliding member (20) is provided with a driving shaft (22) that is driven to rotate; A cleaning component (30) is located on each sliding member (20) and comprises an auxiliary washing assembly (60) and a cleaning cylinder (31) that moves axially with the drive shaft (22) and is circumferentially limited; The cleaning cylinder (31) is subjected to elastic force toward the sliding member (20) and is provided with a cleaning member (34) for cleaning the guardrail; The auxiliary washing assembly (60) comprises a support box (61) fixedly connected to the sliding member (20), and a transmission assembly, a disc (64), a connecting rod (65), and a pressing rod (66) located in the support box (61); The input end of the transmission assembly is connected to the drive shaft (22), and the output end is connected to the disc body (64). The two ends of the connecting rod (65) are movably connected to the disc body (64) and one end of the push rod (66). The push rod (66) is slidably connected to the support box (61) and the sliding direction is consistent with the axis of the cleaning cylinder (31). The other end of the push rod (66) is in contact with the cleaning cylinder (31). The transmission assembly drives the disc (64) to rotate, forming a crank slider mechanism with the connecting rod (65) and the push rod (66); the movement of the push rod (66) drives the cleaning cylinder (31) to move axially relative to the drive shaft (22); The water spraying component is located on the lateral side of the mechanical arm (10) and is capable of spraying high-pressure water toward the guardrail.

2. A road guardrail cleaning device according to claim 1, characterized in that: The disc (64) is provided with a plurality of positioning holes (641) of different diameters, with the rotation center of the disc (64) as the center of the circle; The positioning rod (642) is disassembled and installed on one of the positioning holes (641) and is rotatably connected to one end of the connecting rod (65).

3. A road guardrail cleaning device according to claim 2, characterized in that: One end of the push rod (66) is provided with a roller, and contacts the cleaning cylinder (31) through the roller. The end of the push rod (66) close to the roller is threadedly connected to a positioning cylinder (69), and the positioning cylinder (69) is located below the support box (61); A bottom plate (68) and a second elastic member (67) are installed at one end of the drive shaft (22) away from the sliding member (20); the second elastic member (67) contacts the cleaning cylinder (31) and the bottom plate (68) respectively, so that the cleaning cylinder (31) moves axially and elastically contacts the roller.

4. A road guardrail cleaning device according to any one of claims 1 to 3, characterized in that: The cleaning cylinder (31) comprises a cylinder member (35) and a support plate (33); The cylindrical member (35) is uniformly distributed with slots (32) along its circumference, and each slot (32) is arranged along the axial direction of the cylindrical member (35); a support plate (33) matching the guardrail profile is slidably disassembled and installed in the slot (32) on one side, and a cleaning member (34) is arranged on the other side; The support plate (33) in the same slot (32) can be formed by connecting a plurality of cleaning blocks.

5. A road guardrail cleaning device according to claim 4, characterized in that: A plurality of nozzles are provided between adjacent support plates (33), and the plurality of nozzles are spaced apart along the axial direction of the cleaning cylinder (31); One end of the nozzle is connected to a rotary joint (70) located on the support box (61) through a conduit, and the rotary joint (70) is connected to a high-pressure water source.

6. A road guardrail cleaning device according to any one of claims 1 to 3, characterized in that: The mechanical arm (10) is provided with a fixing frame (51) and a second driving member (52); The second driving member (52) is mounted on the fixing frame (51), the telescopic end of the second driving member (52) is movably connected to one end of the arm assembly (53), and the other end of the arm assembly (53) is movably connected to the sliding member (20); Wherein, a pair of support arm assemblies (53) are arranged in an "eight"-shaped structure.

7. A road guardrail cleaning device according to claim 6, characterized in that: The cleaning cylinder (31) is provided with a plurality of guide rod components spaced apart along its axial direction; Each guide rod component has a guide rod (41) capable of radial movement; the guide rod (41) is forced away from the axis of the cleaning cylinder (31), and one end extends to the outside of the cleaning cylinder (31); When the guide rod (41) is pressed and moved close to the axis of the cleaning cylinder (31), the support arm assembly (53) corresponding to the cleaning cylinder (31) is extended to drive the sliding member (20) to move laterally outward; when the guide rod (41) is forced to move away from the axis of the cleaning cylinder (31), the support arm assembly (53) corresponding to the cleaning cylinder (31) is shortened to drive the sliding member (20) to move laterally inward.

8. A road guardrail cleaning device according to claim 7, characterized in that: The support arm assembly (53) comprises a second cylinder (531), a first support arm (532), and a second support arm (533); One end of the second support arm (533) is rotatably connected to the telescopic end of the second driving member (52), and the other end is fixedly connected to the second cylinder (531); one end of the first support arm (532) is rotatably connected to the sliding member (20), and the piston at the other end divides the second cylinder (531) into two cavities; The guide rod component further comprises a first cylinder (42) fixed on the cleaning cylinder (31), and a piston at one end of the guide rod (41) divides the first cylinder (42) into two cavities; The cavity in the first cylinder (42) close to the axis of the cleaning cylinder (31) is connected to the cavity in the second cylinder (531) close to the second driving member (52) and is sealed and filled with oil, so that when the guide rod (41) extends and retracts, the first arm (532) is linked to retract and extend; The cavity in the second cylinder (531) close to the second driving member (52) is subjected to a certain pressure, causing the guide rod (41) to move away from the axis of the cleaning cylinder (31).

9. A road guardrail cleaning device according to claim 8, characterized in that: The support box (61) is provided with a rotary joint (70); The cavity near the axis of the cleaning cylinder (31) is connected to the movable end of the rotary joint (70) through a conduit, and the fixed end of the rotary joint (70) is connected to the oil source (80), and then connected to the cavity near the second driving member (52) through the oil source (80); A first elastic member (54) is provided in a cavity of the second cylinder (531) away from the second driving member (52) or on the outside of the sliding member (20). Under the action of the first elastic member (54), the guide rod (41) is elastically forced away from the axis of the cleaning cylinder (31).

10. A guardrail cleaning vehicle, characterized in that: include: A mobile vehicle body, a mechanical arm (10), and the road guardrail cleaning device according to claim 9; The mechanical arm (10) is mounted on the mobile vehicle body and is capable of rotating and moving in space; the road guardrail cleaning device is mounted on the mechanical arm (10).

Images