Spraying and brushing integrated tunnel lamp cleaning machine

Abstract

The utility model relates to a spraying and brushing integrated tunnel lamp cleaning machine. The spraying and brushing integrated tunnel lamp cleaning machine comprises a rotary platform, a multi-stage folding hydraulic extension arm and a brushing module. The rotary platform is fixed on the chassis truck, and the lower end of the multi-stage folding hydraulic extension arm is fixedly connected to the rotary platform and is driven by the rotary platform to rotate; the free end of the upper portion of the multi-stage folding hydraulic extension arm is connected with an extension arm, the scrubbing module is connected to the front end of the extension arm through two guide electric cylinders, a scrubbing support of the scrubbing module is hinged to the front ends of cylinder rods of the two guide electric cylinders through pin shafts, and the side portions of cylinder bodies of the two guide electric cylinders are hinged to the two sides of a claw frame at the front end of the extension arm respectively. A plurality of roller brushes driven by a motor to rotate are rotationally connected to a scrubbing support of the scrubbing module, steam pipelines are arranged on the two sides of the scrubbing support respectively, and a plurality of steam nozzles are arranged on the steam pipelines at intervals and used for spraying steam to the tunnel lamp. The surface of the tunnel lamp can be fully cleaned, and the cleaning quality of the tunnel lamp is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel light cleaning equipment, specifically to a spray-brush integrated tunnel light cleaning machine. Background Technology

[0002] Lighting fixtures inside tunnels are typically evenly distributed along both sides of the tunnel. Because tunnels are semi-enclosed, accumulated vehicle exhaust and dust deposit on the surface of the lights over time, affecting their illumination. Therefore, tunnel lights need to be cleaned during tunnel maintenance. However, relying on manual cleaning using a mobile lifting platform is extremely inefficient and compromises worker safety.

[0003] In addition, machines can be used for cleaning, such as steam cleaning and roller brush cleaning. Steam cleaning uses the high temperature and pressure of saturated steam to accelerate the dissolution and loosening of dirt before blowing it away. Steam can penetrate into the small gaps on the uneven surface of the lamp to achieve a thorough cleaning. It also has the advantages of being environmentally friendly and leaving no cleaning agent residue. Even if the IP protection level of tunnel lights is low, steam is unlikely to cause short circuits in the lamp's wiring. However, steam cleaning cannot completely remove dirt from the lamp surface, and the high temperature may accelerate the aging of plastic structural components. Roller brush cleaning uses a rapidly rotating brush head to scrub dirt from the lamp surface. During the process, cleaning agent is sprayed into the brush head. The main factors affecting the cleaning effect include the material of the brush head, the composition of the cleaning agent, and whether the brush head makes sufficient contact with the surface to be cleaned. While roller brushes can efficiently and powerfully remove dirt from the surface of light fixtures, they require personnel to constantly operate a robotic arm to position the brush head in the appropriate location for cleaning. The positioning accuracy required is higher than that of steam brushes. Furthermore, the rotation of the brush head can cause cleaning agents and wastewater to splash onto the tunnel walls, causing pollution. Therefore, a new type of tunnel light cleaning machine was designed by combining the advantages and disadvantages of the two methods mentioned above. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a spray-brush integrated tunnel light cleaning machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The integrated spray and brush tunnel light cleaning machine includes a rotating platform, a multi-stage folding hydraulic extension arm, and a brushing module. The rotating platform is fixed to a chassis vehicle. The lower end of the multi-stage folding hydraulic extension arm is fixedly connected to the rotating platform and rotated by the platform. An extension arm is connected to the upper free end of the multi-stage folding hydraulic extension arm. The brushing module is connected to the front end of the extension arm via two guide cylinders. The brushing bracket of the brushing module is hinged to the front end of the cylinder rods of the two guide cylinders via pins. The cylinder sides of the two guide cylinders are respectively hinged to the two sides of the spur bracket at the front end of the extension arm. Multiple roller brushes driven by motors are rotatably connected to the brushing bracket of the brushing module. Steam pipes are provided on both sides of the brushing bracket, and multiple steam nozzles are spaced apart on the steam pipes. The steam nozzles are used to spray steam onto the tunnel lights.

[0007] Furthermore, the upper free end of the multi-stage folding hydraulic extension arm is provided with a linear motion module, and the extension arm is connected to the linear motion module and driven to move by the linear motion module.

[0008] Furthermore, laser rangefinders are provided at the four corners of the brushing bracket.

[0009] Furthermore, the rear end of the brushing support is connected to a squeezing roller assembly, which includes a squeezing bracket. Each squeezing roller is provided on the squeezing bracket corresponding to each roller brush. The upper and lower ends of each squeezing roller are respectively connected to a slide block. The upper and lower slide blocks are rotatably connected to the two ends of the roller shaft of the squeezing roller. The upper and lower slide blocks are also slidably connected to a crossbar on the squeezing roller bracket. The crossbar has a threaded part, and an adjusting nut is connected to the threaded part. The adjusting nut and the slide block are directly connected to a squeezing spring sleeved on the crossbar. Under the force of the squeezing spring, each squeezing roller squeezes against the corresponding roller brush cylinder. The brushing support is connected to multiple cleaning agent spray pipes, and multiple cleaning agent nozzles are connected to the cleaning agent spray pipes. The cleaning agent nozzles are used to spray cleaning agent into the roller brush cylinder.

[0010] Furthermore, the bottom of the brushing module is provided with a sewage collection tank.

[0011] Furthermore, the brushing module is equipped with matrix fiber optic sensors on both sides of the brushing bracket to sense obstacles.

[0012] Furthermore, a high-pressure air blowing device is provided at the rear of the brushing module.

[0013] The present invention adopts the above technical solution and has the following beneficial effects:

[0014] 1. This utility model of an integrated spray and brush tunnel light cleaning machine cleverly combines steam spraying and roller brushing, making it more suitable for cleaning dirt deposited by vehicle exhaust and dust on tunnel light surfaces. Compared to manual cleaning, the integrated cleaning machine is more efficient, requires less labor, and better ensures personnel safety. Compared to using a dedicated cleaning vehicle equipped with roller brushes, the integrated cleaning machine's unique roller squeezing device and cleaning agent spraying method prevent short circuits in the internal wiring of the light fixtures during the cleaning process. Both cleaning methods result in better cleaning effects, and the cleaning process avoids cleaning agent splashing and secondary pollution, leaving minimal cleaning agent residue after cleaning.

[0015] 2. The floating connection design of the brushing module, in conjunction with the laser rangefinder, enables the module to automatically adjust to be flush with the surface to be cleaned during operation, ensuring that the lamp surface is thoroughly cleaned; the matrix fiber optic sensors on both sides can detect obstacles ahead during operation and issue collision warnings to the operator to avoid collision accidents.

[0016] 3. The spraying of steam and cleaning agents can be controlled individually through corresponding solenoid valves, which can greatly reduce losses; the various drive motors, solenoid valves, sensor signals, etc. of the entire cleaning machine are centrally controlled and processed by PLC, and the operator can control the cleaning machine through a handheld HMI control box. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] Figure 1 This is a schematic diagram of the overall structure of the cleaning machine of this utility model;

[0019] Figure 2 This is a schematic diagram of the cleaning machine of this utility model arranged on the chassis of a vehicle;

[0020] Figure 3 Top view of the extension arm and the brushing module;

[0021] Figure 4 A schematic diagram illustrating the telescopic movement of the brushing module driven by the extension arm;

[0022] Figure 5 This is a schematic diagram of the brushing module.

[0023] Figure 6 This is a schematic diagram of the extrusion roller assembly.

[0024] Figure 7 A top view showing the connection between the roller brush cylinder and the extrusion roller;

[0025] Figure 8 This is a schematic diagram of the cleaning pipeline;

[0026] Figure 9 A schematic diagram illustrating the adaptive adjustment of the brushing module distance;

[0027] Figure 10 A diagram showing the comparison of cleaning distances for different brush bristle lengths;

[0028] Figure 11 This is a schematic diagram of a high-pressure jet device;

[0029] Figure 12 This is a schematic diagram of a large brushing module. Detailed Implementation

[0030] like Figure 1-11 As shown, this utility model of an integrated spray and brush tunnel light cleaning machine includes a rotating platform 1, a multi-stage folding hydraulic extension arm 2, and a brushing module 3. The rotating platform 1 is fixed on a chassis vehicle, and the lower end of the multi-stage folding hydraulic extension arm 2 is fixedly connected to the rotating platform 1 and driven to rotate by the rotating platform 1. The rotating platform 1 fixes the entire cleaning machine on the chassis vehicle and can rotate the entire cleaning machine to the left or right side of the chassis. The multi-stage folding hydraulic extension arm 2 is used to lift the brushing module 3 to the front end of the tunnel light 6, and the brushing module 3 is used to perform cleaning operations on the tunnel light 6.

[0031] During the cleaning operation, the operator needs to unfold the multi-stage folding hydraulic extension arm 2 to move and position the brushing module 3 to a suitable location for cleaning the tunnel light 6. At this time, the brushing module 3 and the surface of the light to be cleaned should be roughly parallel, centered, and with moderate contact force (distance). Then, the laser rangefinders 33 at the four corners of the brushing module 3 will use their respective distances to the tunnel wall as reference distances. After calibration, the brushing module 3 can begin cleaning. Steam will be sprayed from the front of the brushing module 3 to soften the dirt, and then the roller brush will start rotating to brush away the dirt again. The high-pressure air blowing device at the rear needs to be activated after determining the installation distance between the tunnel light and the tunnel wall. After cleaning a single tunnel light, the chassis moves to the next one. The brushing module will automatically adjust its distance from the tunnel wall according to the reference distance calibrated at the beginning, and then the module will brush the next tunnel light as the chassis moves. The entire operation can be completed by the operator in the passenger seat using a handheld HMI control box to control the cleaning machine. A camera 8 mounted above the scrubbing module 3 transmits its operating status back to the passenger-side display screen in real time, allowing the operator to monitor it. The control box can also wirelessly connect to the control system, making it easier for the operator to get out of the vehicle and control the cleaning machine for initial calibration or cleaning of tunnel lights in unconventional locations. A beam guide light can also be installed at the front of the chassis to illuminate reference objects (such as lane markings). The driver can maintain relatively stable driving by keeping the beam near the reference object.

[0032] The rotary platform 1 consists of two parts: a rotating base and a turntable. These two parts are connected by a turntable bearing. The rotating base mates with the inner ring of the turntable bearing, while the turntable mates with the outer ring. This structure allows the platform to withstand large axial and radial loads and overturning moments. A worm gear reducer and a drive motor are mounted outside the rotating base. The gear on the reducer's output shaft meshes with a gear below the turntable, allowing the turntable to rotate relative to the rotating base under the action of the drive motor.

[0033] The multi-stage folding hydraulic extension arm 2 has a three-stage extension structure, consisting of a first-stage, a second-stage, and a third-stage arm. The arms are hinged together via connecting pins to form a foldable and extendable structure. The two ends of the first-stage arm are connected to the turntable and the second-stage arm, respectively, while the other end of the second-stage arm is connected to the third-stage arm. Each arm is extended by its own hydraulic cylinder. A linear motion module is also installed on the third-stage arm, and an extension arm 4 is fixed to the module's slider, allowing the length of the third-stage arm to be variable.

[0034] The upper free end of the multi-stage folding hydraulic extension arm 2 is connected to the extension arm 4. The brushing module 3 is connected to the front end of the extension arm 4 through two guide electric cylinders 7. The brushing bracket of the brushing module 3 is hinged to the front end of the cylinder rod of the two guide electric cylinders 7 through a pin. The cylinder body side of the two guide electric cylinders 7 is respectively hinged to the two sides of the ram's horn frame 41 at the front end of the extension arm 4.

[0035] The guide cylinder 7 on one side can be fixed by the electric cylinder fixing plate according to the actual operation, so that the cylinder body and the extension arm 4 on that side are in a relatively fixed state, thereby reducing the rotational degree of freedom of the guide cylinder 7. This makes the position control of the brushing module 3 simpler and more precise. By adopting a floating connection method and combining it with the automatic adjustment function block of the control system, the relative position between the brushing module 3 and the lamp surface to be cleaned can always be consistent with the state at the beginning of calibration. This makes it easy to ensure that the pressure of the roller brush 31 of the brushing module 3 when it comes into contact with the lamp surface is moderate and stable, because if the pressure is too small, the cleaning effect will be poor, and if it is too large, it may damage (bend) the lamp.

[0036] In addition, laser rangefinders 33 are installed at the four corners of the brush cleaning bracket. These are primarily used to address situations where there are forward / backward tilt angles or distance deviations between the brush cleaning module and the light surface due to changes in tunnel curvature or chassis movement. Such deviations significantly reduce cleaning effectiveness. During the initial brush cleaning module calibration, the laser rangefinders 33 record the current distance between themselves and the tunnel wall, using this value as their respective reference distance and assigning a safety deviation ratio. As the brush cleaning module 3 moves, the laser rangefinders 33 continuously detect the distance between themselves and the tunnel wall. When the deviation between the real-time distance and the reference distance exceeds the distance calculated by the safety deviation ratio, the control system controls the corresponding guide cylinder 7 to perform a corresponding action to compensate for this deviation. It is worth noting that when the tunnel transitions from a straight section to a curve, it is best to recalibrate the tunnel lights in the curved section, especially when the curvature change is significant. This is because the installation of the light surface on the curved section is approximately tangent to the tunnel wall curve, and the recalibrated reference distance will inevitably be greater or less than the reference distance obtained during the straight section calibration. If the transition from a straight line to a curve is not recalibrated and the system misjudges the situation, the scrubbing module 3 may press inward or move outward away from the tunnel light, potentially causing a collision or rendering it ineffective. The operator can also adjust the reference distance by viewing real-time images of the scrubbing module, based on the degree of pressure between the roller brushes and the light surface to be cleaned. Since the installation height of the lights within the same tunnel does not vary significantly, the vertical tilt angle between the scrubbing module 3 and the light surface will not change much; the main variation is in the forward and backward tilt angles mentioned above. Therefore, the lifting height of the scrubbing module generally does not need to be changed during operation; it only needs to be adjusted to a suitable height at the start of calibration.

[0037] For example, if the reference distance after operator calibration is X0 = 500mm, and the set safety deviation ratio is 20%, it means that during the cleaning operation, the real-time distances (X1, X2) returned by the laser rangefinders 33 on both sides are within the range of 400mm to 600mm, which is normal. If one side (X1) exceeds 600mm, the control system will control the guide cylinder on that side to extend until the real-time distance is maintained within the allowable range. Figure 9 As shown. The above process is achieved by the control system in conjunction with the laser rangefinder 33, which greatly facilitates the operation by personnel.

[0038] The upper free end of the multi-stage folding hydraulic extension arm 2 is equipped with a linear motion module 5. The extension arm 4 is connected to the linear motion module 5 and is driven by the linear motion module 5 to move. In addition to the changes in tunnel curvature, the chassis vehicle's driving path may also deviate, causing the washing module 3 to move closer to or further away from the tunnel wall. The adjustment stroke of the guide cylinder 7 is very limited. Therefore, a linear motion module 5 is added to the third-stage arm. The module guide rail is installed on the third-stage arm, and the extension arm 4 is installed on the module slider, which is also equipped with a lead screw nut seat. Driven by the module drive motor, the rotational motion of the lead screw is converted into the linear motion of the slide after passing through the lead screw nut. The slide, together with the extension arm 4, drives the washing module 3 to move in an extension and retraction manner, thereby assisting the guide cylinder 7 in timely adjusting the position of the washing module.

[0039] To prevent collisions during the movement of the washing module 4 along with the chassis, matrix fiber optic sensors 313 can be installed at both ends of the washing module to detect obstacles. When an obstacle is detected, a collision warning will be issued on the control box to alert the operator. If a long-range warning is required, it can be replaced with millimeter-wave radar. If the operator does not take evasive action or confirm the alarm, the guide cylinder 7 and the extension arm 4 will automatically retract to prevent collisions caused by the operator's failure to detect the obstacle in time.

[0040] Multiple roller brushes 31, driven by motors 32, are rotatably connected to the brushing bracket of the brushing module 3. The power of the motors 32 is transmitted sequentially to the adjacent roller brushes 31 through transmission gears. The transmission gears of the roller brush 31 in the center position do not mesh together, thus isolating the power of the motors 32 on both sides. The bristle material of the roller brushes 31 and the type of cleaning agent used directly determine the final cleaning effect. Therefore, according to the above-described brushing module workflow, the bristles must have a certain degree of water absorption and softness. Existing high-density nylon, PP filament, and other bristles are not very suitable for cleaning the smooth lighting surface of the tunnel light 6, so foam, cotton strips, and tough sponge strips can be used to make the bristles.

[0041] like Figure 10As shown, during the cleaning process, the length of the brush bristles determines the allowable deviation in the distance between the brushing module 3 and the lamp surface to be cleaned. When the bristles of the rotating roller brush 31 just touch the lamp surface, the distance from the outer diameter of the roller core to the lamp surface is called the safe distance. Therefore, the effective cleaning distance must be within the safe distance. It can be seen that the longer the bristles, the wider the allowable range of the effective cleaning distance, i.e., the greater the allowable deviation. Longer bristles make it easier for the operator to operate the positioning cleaning machine. However, if excessively long soft cotton bristles are used, they are prone to tangling with the lamp bracket or other structures during rotation. Conversely, shorter bristles allow for smaller deviations and require stricter control over the effective cleaning distance. Because excessive distance variation can lead to poor cleaning results or the roller core colliding with the lamp surface, a high degree of coordination between the operator and driver is required. Foam bristles can also be used. Although they are harder and have lower water absorption, they are less prone to tangling and dirt adhesion, and the final cleaning effect is only slightly inferior to that of a cotton roller brush.

[0042] like Figure 12 If higher cleaning efficiency is desired, the roller brush 31 of the brushing module 3 can be enlarged, and its transmission structure and cleaning pipeline layout of the brushing module 3 can be readjusted. The larger roller brush brings a greater effective cleaning distance, so it can move at a greater speed during operation.

[0043] The rear end of the brush holder is connected to a squeezing roller assembly, which includes a squeezing bracket 37. Each squeezing roller 38 is provided on the squeezing bracket 37 corresponding to each roller brush. The upper and lower ends of each squeezing roller 38 are connected to a slide 39. The upper and lower slides 39 are rotatably connected to the two ends of the roller shaft of the squeezing roller 38. The upper and lower slides 39 are also slidably connected to a crossbar 310 on the squeezing roller 38 bracket. The crossbar 310 has a threaded part, on which an adjusting nut 311 is connected. The adjusting nut 311 and the slide 39 are directly connected to a squeezing spring 312 sleeved on the crossbar 310. Under the force of the squeezing spring 312, each squeezing roller 38 squeezes against the corresponding roller brush cylinder. By rotating the adjusting nut 311, the pressure of the squeezing spring 312 on the slide 39 can be changed. The pressure of the (steel) squeezing roller 38 connected to the slide 39 on the roller brush 31 also changes accordingly. The greater the pressure of both, the drier the roller brush 31 is squeezed. The pressure can be adjusted appropriately according to the actual situation.

[0044] The brushing support is connected to multiple cleaning agent spray pipes, and multiple cleaning agent nozzles 35 are connected to the cleaning agent spray pipes. The cleaning agent nozzles 35 are used to spray cleaning agent into the roller brush cylinder. Steam pipes are provided on both sides of the brushing support of the brushing module. Multiple steam nozzles 36 are spaced apart on the steam pipes. The steam nozzles 36 are used to spray steam into the tunnel light 6.

[0045] The cleaning pipeline of the brushing module 3 includes two types: a cleaning pipeline and a steam pipeline. The cleaning agent storage tank delivers high-pressure cleaning agent to the spray cleaning pipeline via a high-pressure pump head. When the spray cleaning solenoid valve opens, the high-pressure cleaning agent is ejected from the cleaning agent nozzle onto the roller brushes 31. Since adjacent roller brushes 31 rotate in opposite directions under the drive of the transmission gear, they can share a set of spray cleaning pipelines. The pump head assembly includes an automatic pressure start / stop device, which maintains the pressure of the liquid in the pipeline at the set pressure value.

[0046] Similar to the spray cleaning pipeline, the steam source can be a steam generator. The steam generator, like the storage tank, is installed above the chassis and supplies high-temperature and high-pressure steam (about 150°C) to the brushing module 3 through pipelines. When the steam solenoid valve on the steam pipeline is opened, the steam nozzle 36 on the corresponding side will spray steam.

[0047] The cleaning machine of this invention is installed at the front of the chassis vehicle, while the remaining space of the chassis is used to install auxiliary equipment such as containers, power supply, and safety devices. The operator can control the cleaning machine from the passenger seat using a handheld HMI control box, and the working status of the brushing module 3 can be observed in real time by a camera 8 installed at the front of the cleaning machine. The control box is designed to be movable, allowing the operator to get out of the vehicle and control the cleaning machine to move and position it directly in front of the tunnel light 6 or to clean equipment in unconventional locations.

[0048] A high-pressure air blowing device 9 can also be arranged behind the brushing module 3. A large flow of high-pressure air is delivered to the airflow main pipe through a blower located on the chassis. The airflow reaches the top of the brushing module 3 and is divided by the air distribution pipe. After that, it is sprayed onto the cleaned lamp surface through the air blowing nozzle to achieve the purpose of blowing out residual water vapor.

[0049] The bottom of the scrubbing module 3 is equipped with a sewage collection tank 34.

[0050] The cleaning process of the brushing module 3 can be divided into three main steps: softening pretreatment, secondary brushing, and final blowing. During operation, the brushing module first sprays high-pressure steam from the front steam pipe to soften the dirt adhering to the lamp surface. Then, the high-speed rotating roller brush 31 removes the softened dirt a second time. During the roller brushing process, some dirt adheres to the bristles; if not cleaned promptly, the cleaning effect will deteriorate. Therefore, the spray pipe sprays cleaning agent into the rotation center of the roller brush 31 to clean the bristles. The cleaning agent adsorbed on the bristles is squeezed off by the roller assembly into the wastewater collection tank 34 and returned to the storage tank. After being squeezed, the bristles do not fling a large amount of cleaning agent outside the module, achieving an effect similar to wiping with a wet cloth, thus reducing the IP protection requirement for the lamp. After brushing, a high-pressure blowing device at the rear blows a large-volume, high-speed airflow to remove any remaining water droplets from the lamp surface.

[0051] The specific embodiments of this utility model have been described above. However, those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A spray-brush integrated tunnel light cleaning machine, characterized in that: The system includes a rotating platform, a multi-stage folding hydraulic extension arm, and a scrubbing module. The rotating platform is fixed to a chassis vehicle. The lower end of the multi-stage folding hydraulic extension arm is fixedly connected to the rotating platform and rotated by the platform. An extension arm is connected to the upper free end of the multi-stage folding hydraulic extension arm. The scrubbing module is connected to the front end of the extension arm via two guide cylinders. The scrubbing bracket of the scrubbing module is hinged to the front end of the cylinder rods of the two guide cylinders via pins. The cylinder sides of the two guide cylinders are respectively hinged to the two sides of the spur bracket at the front end of the extension arm. Multiple roller brushes driven by motors are rotatably connected to the scrubbing bracket of the scrubbing module. Steam pipes are provided on both sides of the scrubbing bracket, and multiple steam nozzles are spaced apart on the steam pipes. The steam nozzles are used to spray steam onto the tunnel lights.

2. The integrated spray and brush tunnel light cleaning machine according to claim 1, characterized in that: The upper free end of the multi-stage folding hydraulic extension arm is provided with a linear motion module, and the extension arm is connected to the linear motion module and driven to move by the linear motion module.

3. The integrated spray and brush tunnel light cleaning machine according to claim 1, characterized in that: The brushing bracket is equipped with laser rangefinders at each of its four corners.

4. The integrated spray and brush tunnel light cleaning machine according to claim 1, characterized in that: The rear end of the brushing support is connected to a squeezing roller assembly, which includes a squeezing bracket. Each squeezing roller is provided on the squeezing bracket corresponding to each roller brush. The upper and lower ends of each squeezing roller are connected to a slide block. The slide blocks at the upper and lower ends are rotatably connected to the two ends of the roller shaft of the squeezing roller. The slide blocks at the upper and lower ends are also slidably connected to a crossbar on the squeezing roller bracket. The crossbar has a threaded part, and an adjusting nut is connected to the threaded part. The adjusting nut and the slide block are directly connected to a squeezing spring sleeved on the crossbar. Under the force of the squeezing spring, each squeezing roller squeezes against the corresponding roller brush cylinder. The brushing support is connected to multiple cleaning agent spray pipes, and multiple cleaning agent nozzles are connected to the cleaning agent spray pipes. The cleaning agent nozzles are used to spray cleaning agent into the roller brush cylinder.

5. The integrated spray and brush tunnel light cleaning machine according to claim 1, characterized in that: The bottom of the scrubbing module is equipped with a sewage collection tank.

6. The integrated spray and brush tunnel light cleaning machine according to claim 1, characterized in that: The brushing module has matrix fiber optic sensors on both sides of the brushing bracket to detect obstacles.

7. The integrated spray and brush tunnel light cleaning machine according to claim 1, characterized in that: A high-pressure air blowing device is provided at the rear of the brushing module.

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