Guardrail cleaning rolling brush device, using method thereof and guardrail cleaning vehicle

Abstract

The invention belongs to the technical field of guardrail cleaning devices, and discloses a guardrail cleaning rolling brush device, a using method of the guardrail cleaning rolling brush device and a guardrail cleaning vehicle. The guardrail cleaning rolling brush device comprises a rolling brush structure, a hydraulic system, a pneumatic system, an electrical system and a water path system. The rolling brush structure comprises a rolling brush rotating assembly welding part, a first blocking rod and a second blocking rod. The rolling brush rotating assembly welding is connected to the guardrail cleaning engineering machine and comprises a plurality of rolling brushes. The first blocking rod and the second blocking rod are installed on the two sides of the rolling brush rotating assembly welding part and used for limiting the distance between the rolling brush structure and a guardrail. The hydraulic system is used for providing power for the rolling brush structure and adjusting the distance between the rolling brush structure and the guardrail; the pneumatic system comprises a first air cylinder and a second air cylinder and is used for adjusting the rotating installing and welding angle of the rolling brush in the cleaning process. The guardrail cleaning vehicle is provided with a mounting seat and is connected with the guardrail cleaning rolling brush device through the mounting seat. According to the guardrail cleaning rolling brush device, the cleaning effect can be guaranteed, and meanwhile damage caused by rigid collision between the rolling brush structure and a guardrail can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of guardrail cleaning device, in particular to a guardrail cleaning roller brush device, a use method thereof and a guardrail cleaning vehicle. BACKGROUND

[0002] At present, most of the guardrail cleaning roller brush devices on the market adopt mechanical limiting structure, and the distance between the roller brush and the guardrail needs to be kept within a certain distance during the driving operation of the guardrail cleaning vehicle.

[0003] During the cleaning process, when the distance between the roller brush and the guardrail is too far, the cleaning effect is poor, and when the distance is too close, the collision damage of the guardrail roller brush rod is easy to occur, and even the guardrail is broken. The accurate distance control is difficult to maintain for a long time during the driving operation of the operator, so that the distance between the guardrail cleaning vehicle and the guardrail is too close, and the guardrail is often damaged.

[0004] Therefore, how to avoid the collision between the roller brush structure and the guardrail is a technical problem to be solved in the field. SUMMARY

[0005] Object: In order to overcome the shortcomings in the prior art, the present application provides a guardrail cleaning roller brush device, a use method thereof and a guardrail cleaning vehicle, which keeps the distance between the roller brush and the guardrail during the guardrail cleaning process, ensures the cleaning effect and prevents the guardrail cleaning roller brush device from being damaged.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is:

[0007] In a first aspect, the present application provides a guardrail cleaning roller brush device, which comprises a roller brush structure, a hydraulic system, a pneumatic system and an electrical system. The roller brush structure comprises a roller brush rotating assembly, a first stop rod and a second stop rod; wherein the roller brush rotating assembly is connected to the guardrail cleaning engineering machinery body and comprises a plurality of roller brushes; and the first stop rod and the second stop rod are installed on both sides of the roller brush rotating assembly to limit the distance between the roller brush structure and the guardrail. The hydraulic system is used to provide power to the roller brush structure and adjust the safe distance between the roller brush structure and the guardrail. The pneumatic system comprises a first cylinder and a second cylinder, which is used to adjust the force angle of the roller brush rotating assembly on the guardrail during the cleaning process, so as to avoid the deformation caused by the extrusion of the first stop rod or the second stop rod on the guardrail. The electrical system is used to control the start and stop of the hydraulic system and the pneumatic system.

[0008] The first cylinder and the second cylinder are used for adjusting the angle of the rotating brush assembly in the cleaning process, so that the rotating brush assembly is closely attached to the guardrail, and the rotating brush assembly is adjusted in the folding storage after cleaning. On the other hand, the first cylinder and the second cylinder are used as pre-pressed gas springs to control the distance between the first and second rods and the guardrail through the extension and retraction of the cylinder, so that the first and second rods are always attached to the guardrail during the cleaning operation, that is, the distance between the rotating brush and the guardrail is maintained.

[0009] The first and second rods are closely attached to the guardrail during the cleaning operation, so that the distance between the rotating brush and the guardrail is constant, and the cleaning effect is guaranteed.

[0010] The guardrail cleaning engineering machinery includes guardrail cleaning machines, guardrail cleaning vehicles, multifunctional comprehensive operation vehicles, and comprehensive maintenance vehicles, etc. The guardrail cleaning brush device is installed on the guardrail cleaning engineering machinery body to avoid damage caused by rigid collision between the rotating brush structure and the guardrail while ensuring the cleaning effect.

[0011] In some embodiments, the guardrail cleaning brush device further includes a lifting arm and a swing arm, and the guardrail cleaning engineering machinery is drivenly connected to the rotating brush assembly through the lifting arm and the swing arm.

[0012] In some embodiments, the hydraulic system includes a plurality of rotating brush motors connected in parallel. The lifting cylinder drives the lifting arm to adjust the height of the rotating brush structure. The unfolding cylinder adjusts the angle between the swing arm and the lifting arm, and further adjusts the distance between the rotating brush structure and the guardrail cleaning engineering machinery. The plurality of rotating brush motors are used to drive the rotating brush to rotate.

[0013] The lifting cylinder adjusts the height of the rotating brush structure, so that the rotating brush can adapt to guardrails of different heights; the unfolding cylinder adjusts the relative distance between the rotating brush structure and the guardrail cleaning engineering machinery by adjusting the included angle between the lifting arm and the swing arm.

[0014] In some embodiments, the plurality of rotating brush motors respectively and one-to-one correspondingly drive a plurality of rotating brushes to rotate, and the plurality of rotating brush motors are connected in series.

[0015] In some embodiments, the hydraulic system further includes an accumulator; the accumulator is connected to the unfolding cylinder through an independent oil circuit, and is used to recover the hydraulic oil overflowing from the unfolding cylinder when the first and / or second rods are pressed, and to supplement the hydraulic oil to the unfolding cylinder when the distance between the first and / or second rods and the guardrail becomes larger.

[0016] The accumulator is connected to the unfolding cylinder through an independent oil path and plays a buffering role. When the rolling brush structure is too close to the guardrail, the first gear lever and / or the second gear lever are pressed, the accumulator recovers the hydraulic oil overflowing from the unfolding cylinder, and the rolling brush structure is prevented from continuously pressing against the guardrail, thereby preventing damage to the structural parts. At this time, the combination of the accumulator and the unfolding cylinder is equivalent to a spring device with pre-tightening force, thereby avoiding rigid impact of the rolling brush structure against the guardrail.

[0017] In some embodiments, the hydraulic system further comprises a hydraulic lock installed on the oil inlet path of the unfolding cylinder for preventing backflow of hydraulic oil to the unfolding cylinder.

[0018] In some embodiments, the pneumatic system further comprises a pressure reducing valve, a first air control valve, a second air control valve, a third air control valve, and a fourth air control valve. The pressure reducing valve is connected to the gas source for adjusting the gas pressure to 0.18-0.22 MPa. The first air control valve and the second air control valve are installed on both sides of the first cylinder, the first air control valve is used to control the first gear lever to press against the guardrail under the drive of the first cylinder, and the second air control valve is used to control the first gear lever to move away from the guardrail under the drive of the first cylinder. The third air control valve and the fourth air control valve are installed on both sides of the second cylinder, the third air control valve is used to control the second gear lever to press against the guardrail under the drive of the second cylinder, and the fourth air control valve is used to control the second gear lever to move away from the guardrail under the drive of the second cylinder.

[0019] In some embodiments, the pneumatic system further comprises a first safety valve and a second safety valve. The first safety valve is installed on one side of the first cylinder for pressure relief when the internal gas pressure of the first cylinder increases due to extrusion, so that the first cylinder is retracted. The second safety valve is installed on one side of the second cylinder for pressure relief when the internal gas pressure of the second cylinder increases due to extrusion, so that the second cylinder is retracted. The pressure relief threshold of the first safety valve and the second safety valve is 0.22-0.25 MPa.

[0020] In a second aspect, the application provides a use method of the guardrail cleaning rolling brush device as described in the first aspect, comprising: Starting the lifting cylinder and the unfolding cylinder, adjusting the rolling brush rotating assembly height, and making the first gear lever and the second gear lever close to the guardrail; Starting the water path system and the rolling brush motor to clean the guardrail; Starting the first cylinder, the second cylinder, and the electrical system, adjusting the gas pressure to 0.18-0.22 MPa through the pressure reducing valve, setting the pressure relief threshold of the first safety valve and the second safety valve to 0.22-0.25 MPa, and making the first gear lever and the second gear lever close to the guardrail during the cleaning operation; After cleaning, close the water system and the rolling brush motor, adjust the angle of the rolling brush rotating assembly through the first cylinder and the second cylinder, and recover the rolling brush rotating assembly through the lifting oil cylinder and the unfolding oil cylinder.

[0021] In a third aspect, the present application provides a guardrail cleaning engineering machine, which is a guardrail cleaning vehicle; the guardrail cleaning vehicle is provided with the guardrail cleaning rolling brush device according to the first aspect; the guardrail cleaning vehicle is provided with a fixing seat, and the guardrail cleaning rolling brush device is connected to the guardrail cleaning vehicle through the fixing seat.

[0022] Beneficial effects: The guardrail cleaning rolling brush device provided by the present application adjusts the height and angle of the rolling brush structure through the unfolding oil cylinder and the lifting oil cylinder in the hydraulic system, so as to avoid collision between the rolling brush structure and the guardrail; the setting of the pneumatic system is used to enable the device to autonomously adjust the angle of the rolling brush, so as to ensure that the rolling brush is always closely attached to the guardrail, thereby ensuring the cleaning effect and further preventing the rolling brush device from being damaged due to extrusion. The device is further provided with an accumulator, which recovers the overflowed hydraulic oil and supplements the insufficient hydraulic oil, so as to avoid damage caused by rigid collision between the rolling brush structure and the guardrail. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0024] Figure 1 It is a structural schematic diagram of the guardrail cleaning rolling brush device in the embodiment of the present application.

[0025] Figure 2 It is a structural schematic diagram of the guardrail cleaning rolling brush device in the embodiment of the present application.

[0026] Figure 3 It is a hydraulic system principle diagram in the embodiment of the present application.

[0027] Figure 4 It is a pneumatic system principle diagram in the embodiment of the present application.

[0028] In the figure: 1, rolling brush structure, 11, rolling brush rotating group welding, 12, rolling brush, 13, first gear lever, 14, second gear lever, 21, first cylinder, 22, second cylinder, 23, pressure reducing valve, 24, first pneumatic control valve, 25, second pneumatic control valve, 26, third pneumatic control valve, 27, fourth pneumatic control valve, 28, first safety valve, 29, second safety valve, 3, lifting arm, 4, swing arm, 51, unfolding oil cylinder, 52, lifting oil cylinder, 53, rolling brush motor, 54, accumulator, 55, hydraulic lock, 6, guardrail, 7, fixed seat; 81, first electromagnetic valve, 82, second electromagnetic valve, 83, third electromagnetic valve, 84, fourth electromagnetic valve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting to the application and its application or uses.

[0030] Unless specifically stated otherwise, the relative arrangements of parts and steps, numerical expressions, and numerical values set forth in the various examples herein are not limiting but are exemplary. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and not of limitation. Any use of the terms "comprising", "comprises", "including", "includes", "containing", "contains", "carrying", "carries", "having", "has", "including", "includes", "with", "without" or any other variation thereof, is not a limitation on the application but merely an appreciation that the item, location, or act can or does encompass a wider field of equivalents. Any use of the terms "about", "substantially", "approximately" or any other similar term is to be understood as meaning that the value concerned is within a reasonable range of the value stated, for example, + / - 10% of the value stated.

[0031] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features of the embodiments can be combined with each other in the case of no conflict.

[0032] The present embodiment provides a guardrail cleaning rolling brush device, as shown in Figure 1 , Figure 2 The present embodiment provides a guardrail cleaning rolling brush device, as shown in

[0033] Further, the rolling brush structure 1 comprises a rolling brush rotating assembly 11, a first stopper 13 and a second stopper 14; the rolling brush rotating assembly 11 is connected to the guardrail cleaning engineering machine, and comprises a plurality of rolling brushes 12; the first stopper 13 and the second stopper 14 are installed on both sides of the rolling brush rotating assembly 11, and are used to limit the distance between the rolling brush structure 1 and the guardrail 6.

[0034] Further, the guardrail cleaning engineering machine body and the rolling brush rotating assembly 11 are drivingly connected through the lifting arm 3 and the swing arm 4.

[0035] Further, as shown in Figure 3 , the hydraulic system is used to provide power to the rolling brush structure 1 and adjust the distance between the rolling brush structure 1 and the guardrail 6; the hydraulic system comprises an unfolding cylinder 51, a lifting cylinder 52 and a plurality of rolling brush motors 53 which are connected in parallel with each other; the lifting cylinder 52 drives the lifting arm 3 to adjust the height of the rolling brush structure 1; the unfolding cylinder 51 drives the angle adjustment between the swing arm 4 and the lifting arm 3, thereby adjusting the distance between the rolling brush structure 1 and the guardrail cleaning engineering machine; the plurality of rolling brush motors 53 respectively and one-to-one correspondingly drive the plurality of rolling brushes 12 to rotate, and the plurality of rolling brush motors 53 are connected in series; The hydraulic system further comprises an accumulator 54 connected to the unfolding cylinder 51 through an independent oil circuit, which is used to recover the hydraulic oil overflowing in the unfolding cylinder 51 when the first stopper 13 and / or the second stopper 14 are extruded, and supplement the hydraulic oil to the unfolding cylinder 51 when the distance between the first stopper 13 and / or the second stopper 14 and the guardrail 6 becomes larger; The hydraulic system further comprises a hydraulic lock 55 installed on the oil inlet of the unfolding cylinder 51, which is used to prevent the backflow of hydraulic oil to the unfolding cylinder 51.

[0036] Further, as shown in Figure 4 , the pneumatic system comprises a first air cylinder 21 and a second air cylinder 22, which are used to adjust the force angle of the rolling brush rotating assembly 11 on the guardrail 6 during the cleaning process, so as to avoid the deformation caused by the extrusion of the first stopper 13 or the second stopper 14 on the guardrail 6; wherein, in the initial state, the rolling brush rotating assembly 11 is parallel to the guardrail 6, and the first air cylinder 21 and the second air cylinder 22 adjust the rotation angle of the rolling brush rotating assembly 11 in the original state to ±20°, that is, the adjustment of the force angle of the rolling brush rotating assembly 11 on the guardrail 6 is realized.

[0037] The pneumatic system also includes a pressure reducing valve 23, a first pneumatic control valve 24, a second pneumatic control valve 25, a third pneumatic control valve 26, and a fourth pneumatic control valve 27. The pressure reducing valve 23 is connected to an air source. The first pneumatic control valve 24 and the second pneumatic control valve 25 are installed on both sides of the first cylinder 21. The first pneumatic control valve 24 is used to control the first stop lever 13 to press against the guardrail 6 under the drive of the first cylinder 21, and the second pneumatic control valve 25 is used to control the first stop lever 13 to move away from the guardrail 6 under the drive of the first cylinder 21. The third pneumatic control valve 26 and the fourth pneumatic control valve 27 are installed on both sides of the second cylinder 22. The third pneumatic control valve 26 is used to control the second stop lever 14 to press against the guardrail 6 under the drive of the second cylinder 22, and the fourth pneumatic control valve 27 is used to control the second stop lever 14 to move away from the guardrail 6 under the drive of the second cylinder 22. The pneumatic system also includes a first safety valve 28 and a second safety valve 29; the first safety valve 28 is installed on one side of the first cylinder 21 and is used to release pressure when the internal air pressure of the first cylinder 21 increases due to compression, so as to cause the first cylinder 21 to contract; the second safety valve 29 is installed on one side of the second cylinder 22 and is used to release pressure when the internal air pressure of the second cylinder 22 increases due to compression, so as to cause the second cylinder 22 to contract.

[0038] Furthermore, the electrical system is used to control the start and stop of the hydraulic and pneumatic systems, while the water system is used to provide pressurized water flow.

[0039] In this embodiment, the pressure reducing valve 23 adjusts the gas pressure to 0.2 MPa, and the pressure relief threshold of the first safety valve 28 and the second safety valve 29 is 0.22 MPa.

[0040] like Figure 3 As shown, the working principle of the hydraulic system is as follows: When the roller brush 12 starts working, the first solenoid valve 81 and the second solenoid valve 82 are energized, and the hydraulic oil drives the deployment cylinder 51 to extend to the appropriate position, that is, the first stop lever 13 and the second stop lever 14 are attached to the guardrail 6. During the cleaning operation, the third solenoid valve 83 or the fourth solenoid valve 84 is energized according to the cleaning requirements, and the roller brush motor 53 drives the roller brush 12 to rotate, thereby carrying out the cleaning work. During the movement of the guardrail cleaning machinery, there is a situation where it approaches the guardrail. At this time, the first stop lever 13 and / or the second stop lever 14 are squeezed. Under these circumstances, the deployment cylinder 51 will be squeezed and contracted. The contraction of the deployment cylinder 51 will cause some hydraulic oil inside to be squeezed out. Since there is a hydraulic lock 55 in the oil circuit of the deployment cylinder 51, the hydraulic oil can only enter the accumulator 54. This process can effectively protect the roller brush 12 from being squeezed and causing structural damage. When the distance between the first stop lever and / or the second stop lever and the guardrail increases, the hydraulic oil in the accumulator 54 is replenished into the deployment cylinder 51, causing the deployment cylinder 51 to extend and ensuring that the first stop lever 13 and the second stop lever 14 are in close contact with the guardrail.

[0041] As Figure 4 shown, the working principle of the pneumatic system is as follows: When the rolling brush 12 swings to the left, the second air control valve 25 and the third air control valve 26 are electrified; when the rolling brush 12 swings to the right, the first air control valve 24 and the fourth air control valve 27 are electrified; During cleaning operation, the first air control valve 24 and the third air control valve 26 are electrified at the same time, at which time the rolling brush 12 is in the middle position, and the first gear rod 13 and the second gear rod 14 are tightly attached to the guardrail 6 to be cleaned; when there is an angle deviation in the guardrail cleaning engineering machinery or there is a turning angle in the guardrail 6, the first air cylinder 21 and the second air cylinder 22 will push the rolling brush 12 to adhere to the guardrail 6, so as to ensure that the first gear rod 13 and the second gear rod 14 are always attached to the guardrail 6. During cleaning, when the included angle and distance between the rolling brush 12 and the guardrail cleaning engineering machinery become smaller, the first air cylinder 21 or the second air cylinder 22 will be extruded, and after being extruded, the pressure inside the first air cylinder 21 or the second air cylinder 22 increases, the increased gas pressure is released through the corresponding first safety valve 28 or second safety valve 29, thereby ensuring that the first air cylinder 21 or the second air cylinder 22 can be retracted, avoiding the bending deformation of the first gear rod 13 or the second gear rod 14 under stress.

[0042] In one possible embodiment, a method for using the guardrail cleaning rolling brush device is also provided, and the method comprises: Starting the lifting oil cylinder 52 and the unfolding oil cylinder 51, adjusting the height of the rolling brush rotating assembly 11 and making the first gear rod 13 and the second gear rod 14 tightly attached to the guardrail 6; Starting the waterway system and the rolling brush motor 53, and cleaning the guardrail 6; Starting the first air cylinder 21, the second air cylinder 22 and the electrical system, adjusting the gas pressure to 0.18-0.22 MPa through the pressure reducing valve 23, setting the pressure relief threshold of the first safety valve 28 and the second safety valve 29 to 0.22-0.25 MPa, so that the first gear rod 13 and the second gear rod 14 are kept attached to the guardrail 6 during the cleaning operation; After cleaning, the waterway system and the rolling brush motor 53 are turned off, the angle of the rolling brush rotating assembly 11 is adjusted through the first air cylinder 21 and the second air cylinder 22, and the rolling brush rotating assembly 11 is recovered through the lifting oil cylinder 52 and the unfolding oil cylinder 51.

[0043] In one possible embodiment, a guardrail cleaning vehicle is also provided, which is installed with the guardrail cleaning rolling brush device.

[0044] As Figure 2 shown, the guardrail cleaning vehicle is provided with a fixing seat, and the guardrail cleaning rolling brush device is connected to the guardrail cleaning vehicle through the fixing seat.

[0045] In the description of the application, it is to be understood by those skilled in the art that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only to explain the relative positional relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directional indication also changes accordingly. It is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0046] In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified and limited, the term "a plurality of" means two or more.

[0047] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood through specific circumstances.

[0048] The above is only the preferred embodiment of the application, and it should be noted that for those skilled in the art, without departing from the technical principles of the application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the application.

Claims

1. A guardrail cleaning roller brush apparatus, characterized by, The barrier cleaning brush device comprises a brush structure (1), a hydraulic system, a pneumatic system and an electrical system. The brush structure (1) comprises a brush rotating assembly (11), a first stop rod (13) and a second stop rod (14). The brush rotating assembly (11) is connected to the barrier cleaning engineering machinery body and comprises a plurality of brushes (12). The first stop rod (13) and the second stop rod (14) are installed on both sides of the brush rotating assembly (11) to limit the distance between the brush structure (1) and the barrier (6). The hydraulic system is used to provide power to the brush structure (1) and adjust the safety distance between the brush structure (1) and the barrier (6). The pneumatic system comprises a first cylinder (21) and a second cylinder (22) to adjust the force angle of the brush rotating assembly (11) on the barrier (6) during cleaning to avoid deformation caused by the extrusion of the first stop rod (13) or the second stop rod (14) on the barrier (6). The electrical system is used to control the start and stop of the hydraulic system and the pneumatic system.

2. The barrier cleaning brush device according to claim 1, wherein the barrier cleaning brush device further comprises a lifting arm (3) and a swing arm (4), and the barrier cleaning engineering machinery and the brush rotating assembly (11) are drivenly connected through the lifting arm (3) and the swing arm (4).

3. The barrier cleaning brush device according to claim 1, wherein the hydraulic system comprises an unfolding cylinder (51), a lifting cylinder (52) and a plurality of brush motors (53). The lifting cylinder (52) drives the lifting arm (3) to adjust the height of the brush structure (1). The unfolding cylinder (51) adjusts the angle between the swing arm (4) and the lifting arm (3), thereby adjusting the distance between the brush structure (1) and the barrier cleaning engineering machinery. The plurality of brush motors (53) are used to drive the rotation of the plurality of brushes (12).

4. The barrier cleaning brush device according to claim 3, wherein the plurality of brush motors (53) respectively and one-to-one correspondingly drive the rotation of the plurality of brushes (12), and the plurality of brush motors (53) are connected in series.

5. The barrier cleaning brush device according to claim 3, wherein the hydraulic system further comprises an accumulator (54). The accumulator (54) is connected to the unfolding cylinder (51) through an independent oil path, and is used to recover the hydraulic oil overflowing in the unfolding cylinder (51) when the first stop rod (13) and / or the second stop rod (14) is extruded, and to supplement the hydraulic oil to the unfolding cylinder (51) when the distance between the first stop rod (13) and / or the second stop rod (14) and the barrier (6) becomes larger.

6. The barrier cleaning brush device according to claim 5, wherein the hydraulic system further comprises a hydraulic lock (55) installed on the oil inlet path of the unfolding cylinder (51) to prevent the backflow of the hydraulic oil to the unfolding cylinder (51).

7. The barrier cleaning brush device according to claim 1, wherein ​ ​ ​ ​ ​ The pneumatic system further comprises a pressure reducing valve (23), a first air control valve (24), a second air control valve (25), a third air control valve (26) and a fourth air control valve (27); The pressure reducing valve (23) is connected to a gas source and is used to adjust the gas pressure to 0.18-0.22 MPA; The first air control valve (24) and the second air control valve (25) are installed on both sides of the first cylinder (21), the first air control valve (24) is used to control the first barrier rod (13) to press towards the guardrail (6) under the drive of the first cylinder (21), and the second air control valve (25) is used to control the first barrier rod (13) to move away from the guardrail (6) under the drive of the first cylinder (21); The third air control valve (26) and the fourth air control valve (27) are installed on both sides of the second cylinder (22), the third air control valve (26) is used to control the second barrier rod (14) to press towards the guardrail (6) under the drive of the second cylinder (22), and the fourth air control valve (27) is used to control the second barrier rod (14) to move away from the guardrail (6) under the drive of the second cylinder (22).

8. The guardrail cleaning roller brush device according to claim 7, characterized in that, The pneumatic system further comprises a first safety valve (28) and a second safety valve (29); The first safety valve (28) is installed on one side of the first cylinder (21) and is used to release pressure when the internal gas pressure of the first cylinder (21) increases due to extrusion, so that the first cylinder (21) contracts; The second safety valve (29) is installed on one side of the second cylinder (22) and is used to release pressure when the internal gas pressure of the second cylinder (22) increases due to extrusion, so that the second cylinder (22) contracts; The pressure release threshold of the first safety valve (28) and the second safety valve (29) is 0.22-0.25 MPa.

9. A method of using a guardrail cleaning roller brush apparatus, characterized by, including: Starting the lifting oil cylinder (52) and the unfolding oil cylinder (51) to adjust the height of the roller brush rotating assembly (11) and make the first barrier rod (13) and the second barrier rod (14) closely adhere to the guardrail (6); Starting the waterway system and the roller brush motor (53) to clean the guardrail (6); Starting the first cylinder (21), the second cylinder (22) and the electrical system, adjusting the gas pressure to 0.18-0.22 MPA through the pressure reducing valve (23), setting the pressure release threshold of the first safety valve (28) and the second safety valve (29) to 0.22-0.25 MPa, so that the first barrier rod (13) and the second barrier rod (14) closely adhere to the guardrail (6) during the cleaning operation; After cleaning, closing the waterway system and the roller brush motor (53), adjusting the angle of the roller brush rotating assembly (11) through the first cylinder (21) and the second cylinder (22), and recovering the roller brush rotating assembly (11) through the lifting oil cylinder (52) and the unfolding oil cylinder (51).

10. A guardrail washing work machine characterized by comprising: The guardrail cleaning engineering machinery is a guardrail cleaning vehicle; the guardrail cleaning vehicle is provided with the guardrail cleaning roller brush device according to any one of claims 1-8; the guardrail cleaning vehicle is provided with a fixing seat (7), and the guardrail cleaning roller brush device is connected to the guardrail cleaning vehicle through the fixing seat (7).

Images