A road maintenance vehicle and a method of operation thereof

Abstract

The application relates to the technical field of road maintenance, and discloses a road surface maintenance vehicle which comprises a vehicle body, a water tank, a generator set, a hydraulic machine set, a lifting machine, a supporting frame and a maintenance head mounted on the vehicle body, the maintenance head is composed of a fixing frame and two cover bodies, one end of the supporting frame is mounted on the lifting machine, two supporting shafts are rotationally connected to the lower end of the fixing frame through rolling bearings, the shaft walls of the two supporting shafts are fixedly connected with the side walls of the two cover bodies, rolling brush assemblies are connected with the two cover bodies through horizontal shafts, the horizontal shafts are rotationally connected to the side walls of the fixing frame through rolling bearings, and a transmission mechanism is mounted at one end of the fixing frame. The road surface maintenance vehicle and the operation method thereof can be used to regularly maintain the road surface by using various drainage and exhaust modes, the water consumption is small, the road surface is not prone to water accumulation, the road surface maintenance vehicle has different cleaning functions, and different types of road surface sundries can be cleaned.

Description

Technical Field

[0001] This invention relates to the field of road maintenance technology, specifically to a road maintenance vehicle and its operation method. Background Technology

[0002] Road maintenance is an essential part of highway use. This includes timely filling and repair of potholes to prevent safety hazards, and frequent sweeping to remove debris and maintain both safety and aesthetics. Road sprinkler trucks, as sanitation equipment for road maintenance, are widely used in the daily maintenance of trunk and branch roads. They not only ensure road appearance and environmental hygiene but also keep the road surface in good working condition. Using a vehicle-mounted water tank and pump, water is evenly sprayed onto the road surface. This not only lowers the road surface temperature, preventing the asphalt from becoming too elastic and reducing its hardness at high temperatures, but also wets the ground, preventing dust from rising into the air and improving air quality.

[0003] Currently, existing sanitation equipment directly pressurizes water through pumps, spraying it onto the ground from pipes and nozzles. However, this method consumes a large amount of water and is prone to causing water accumulation on the road due to excessive watering. Furthermore, it has limited functionality and cannot clean up debris on the road. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a road maintenance vehicle and its operating method, which can perform daily road maintenance using multiple drainage and ventilation methods, with low water consumption and low risk of causing road flooding. It also has different sweeping functions to clean up different types of road debris. This solves the problems of traditional sanitation equipment watering methods, which consume a lot of water, are prone to causing road flooding due to excessive watering, and have limited functionality, making it unable to clean up road debris.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a road maintenance vehicle, comprising a vehicle body, and a water tank, generator set, hydraulic press set, lift, support frame, and maintenance head installed on the vehicle body. The maintenance head consists of a fixed frame and two covers. One end of the support frame is installed on the lift. The lower end of the fixed frame is rotatably connected to two support shafts via rolling bearings. The shaft walls of the two support shafts are respectively fixedly connected to the side walls of the two covers. Each of the two covers contains a roller brush assembly connected via a horizontal shaft. The horizontal shaft is rotatably connected to the side wall of the fixed frame via rolling bearings. One end of the fixed frame is equipped with a transmission mechanism, which is connected to the roller brush assemblies in the two covers.

[0008] The transmission mechanism is used to drive the two roller brush assemblies to rotate and sweep the road surface without generating dust during sweeping.

[0009] The upper end of the fixed frame is connected to the side wall of the support frame through an adjustment mechanism. The adjustment mechanism is used to adjust the tilt angle of the two covers on the fixed frame in multiple directions.

[0010] A drive unit is installed at one end of the fixing frame. The drive unit is used to control the tilt angle between the two covers. A T-shaped rod is fixedly connected to the fixing frame.

[0011] Preferably, both sides of the two covers are provided with arc-shaped notches, and the two arc-shaped notches on the same side together form an air passage. The lower end of the vertical part of the T-shaped rod extends between the two covers and is fixedly connected to a duct fan. The duct fan is coaxially arranged with the air passage. The upper edge of the cover is provided with a notch that matches the wall of the vertical part of the T-shaped rod.

[0012] Preferably, a water pipe is rotatably connected to the inside of the cover via a rolling bearing. Multiple water nozzles are fixedly connected to the wall of the water pipe. A support arm is fixedly connected to the wall of the water pipe. One end of the support arm is rotatably connected to a pull rod via a pin. One end of the pull rod is rotatably connected to a fixing block via a pin. The fixing block is fixed to the vertical part of the T-shaped rod wall.

[0013] Preferably, the transmission mechanism includes two driven gears that mesh with a driving gear. A half-shaft is fixedly connected to the center of each driven gear, and the half-shaft is coaxial with the support shaft. The half-shaft is rotatably connected to one side of the fixed frame via a rolling bearing. A first sprocket is fixedly connected to one end of the half-shaft. A chain is wound around the first sprocket, and a second sprocket is wound inside the chain. A main shaft is fixedly connected to one side of the second sprocket. One end of the main shaft is fixedly connected to one end of the horizontal shaft. A first motor is fixedly connected to the wall of the T-shaped rod, and the output end of the first motor is fixedly connected to one side of the driving gear.

[0014] Preferably, the adjusting mechanism includes two brake frames, each with a bushing sleeve connected to its sidewall by a pin. One end of each bushing is fixedly connected to a hydraulic cylinder. A turntable bearing is fixedly connected to the lower end of the support frame. A rectangular frame is fixedly connected to the lower platform of the turntable bearing, and a rotating shaft is rotatably connected to the lower end of the rectangular frame via a bearing seat. The rotating shaft is fixed to a fixed frame. Support seats are fixedly connected to opposite sides of the rectangular frame. The support seats are rotatably connected to the cylinder body of the hydraulic cylinder via a connecting shaft. An internal gear ring is fixedly connected to the lower platform of the turntable bearing, meshing with a drive gear. A second motor is fixedly connected to one side of the support frame, and the output end of the second motor is fixedly connected to one side of the drive gear.

[0015] Preferably, the drive unit includes two worm gears, which mesh together with a worm. A hydraulic motor is fixedly connected to one end of the fixed frame, and the output end of the hydraulic motor is fixedly connected to the upper end of the worm. The two worm gears are respectively fixedly connected to one end of two support shafts.

[0016] Preferably, the lower end of the cover is provided with a horizontal part, and one side of the horizontal part is provided with an inclined part. The inclined part is rotatably connected to the horizontal shaft through a bearing seat. A rectangular opening is provided on the inclined part, and the roller brush assembly is located inside the rectangular opening. A positioning roller is rotatably connected to the shaft wall of the horizontal shaft through a sealed bearing, and the diameter of the positioning roller is smaller than the diameter of the roller brush assembly.

[0017] Preferably, the cover body has multiple evenly distributed water collection troughs on the horizontal part, and multiple drainage holes are opened through one side of each of the multiple water collection troughs.

[0018] Preferably, the roller brush assembly includes a support tube, a plurality of eccentric blocks are fixedly connected to the inner wall of the support tube, the horizontal shaft is located inside the support tube and is fixedly connected to a plurality of elastic connectors, and a roller brush is fixedly connected to the tube wall of the support tube.

[0019] Preferably, the elastic connector includes two spiral springs with opposite spiral directions. A rubber block is provided on one side of each spiral spring, and the center of the rubber block is fixed to the shaft wall of the horizontal shaft. The side wall of the rubber block has multiple circumferentially distributed energy-absorbing holes. One end of the spiral spring is fixedly connected to the inner wall of the support tube, and the other end of the spiral spring is fixedly connected to the shaft wall of the horizontal shaft.

[0020] The present invention also provides a method for operating a road maintenance vehicle, comprising the following steps:

[0021] Step 1: Use the lift to install the maintenance head on the vehicle body, and install the required water, electrical and hydraulic lines, then fill the water tank with water;

[0022] Step 2: Use the drive unit to control the tilt angle between the two covers so that the roller brush assembly installed inside the cover contacts the ground. Then start the first motor to drive the two roller brush assemblies to rotate and sweep the road surface. At the same time, turn on the water circuit so that the water in the water tank is pressurized and sprayed out from the water pipe and spray head to form water mist, reducing the dust generated when the sweeping assembly rotates.

[0023] Step 3: Use the drive unit to drive the two covers to reset, turn on the duct fan to generate airflow and discharge it from the flow channel. When the water nozzle sprays water, the airflow carries water mist and is directly discharged and sprayed onto the ground.

[0024] Step 4: Start the adjustment mechanism. By using the second motor, drive gear, internal gear ring, turntable bearing and hydraulic cylinder, the tilt angle of the two covers on the fixed frame in multiple directions can be adjusted to spray water in different directions and at different heights.

[0025] (III) Beneficial Effects

[0026] Compared with the prior art, the present invention provides a road maintenance vehicle and its operation method, which has the following beneficial effects:

[0027] 1. In use, this invention utilizes a lift to mount the maintenance head onto the vehicle body, and requires the connection of water, electrical, and hydraulic lines. The water system is equipped with a high-pressure water pump, which is connected to the water pipe via a high-pressure water hose. Water is then injected into the water tank. During operation, the hydraulic motor is activated to drive the worm gear, causing the two worm wheels to rotate in opposite directions. The rotation of the worm wheels drives the support shaft, causing the cover to swing. This allows control of the tilt angle between the two covers. Then, the lifting mechanism drives the support frame to move the maintenance head downwards until the positioning roller contacts the ground, thereby bringing the roller brush assembly installed inside the cover into contact with the ground. Afterwards, the first motor is activated to drive the two roller brush assemblies to rotate and clean the road surface. During the rotation of the roller brush assemblies, the transmission between the horizontal shaft and the support tube is achieved through the rubber block and the spiral spring of the elastic connector. Furthermore, under the action of the eccentric block, the support tube can generate eccentric displacement during rotation. The elastic connector enables elastic reset, allowing for varying friction between the roller brush assembly and the ground during rotation. This facilitates the cleaning of dirt from the road surface. Furthermore, opening the water path pressurizes the water in the tank, which is then sprayed from the water pipes and nozzles to form a water mist, reducing dust generated during the rotation of the cleaning assembly. Additionally, the drive unit resets the two covers, and the duct fan generates airflow, which is discharged through the flow channel. When the nozzles spray water, the airflow carries water mist directly onto the ground. During water spraying, the adjustment mechanism, utilizing a second motor, drive gear, internal gear ring, turntable bearing, and hydraulic cylinder, allows for adjustment of the tilt angles of the two covers on the fixed frame in multiple directions, as shown in the figure. Simultaneously, when the covers are tilted, the adjustment mechanism can be activated to drive the covers to rotate around the axis of the turntable bearing, thus enabling water spraying in different directions and at different heights.

[0028] 2. The transmission mechanism provided in this invention, when in use, starts the first motor to drive the driving gear to rotate the driven gear. When the driven gear rotates, it uses the half shaft to drive the first sprocket to drive the chain to link the second sprocket. When the second sprocket rotates, it drives the main shaft to rotate the horizontal shaft. The rotation of the horizontal shaft drives the roller brush assembly to rotate through the elastic connector. Since the half shaft and the support shaft are coaxial, the distance between the first sprocket and the second sprocket remains unchanged when the cover swings, thereby enabling the roller brush assembly to clean the ground.

[0029] 3. The adjustment mechanism provided in this invention, when in use, starts the second motor to drive the drive gear to rotate the internal gear ring. The rotation of the internal gear ring drives the lower platform of the turntable bearing to rotate the rectangular frame. When the rectangular frame rotates, it drives the rotating shaft to rotate the fixed frame circumferentially in the vertical direction, as shown in the figure. When the hydraulic cylinders on both sides are in opposite working states, that is, one is retracting and the other is releasing, when the length of the piston rod changes, the fixed frame and the rectangular frame can swing around the rotating shaft. In this way, the tilt angle of the fixed frame in the horizontal direction can be adjusted by using the length of the piston rod extended by the hydraulic cylinder. And the rotation adjustment in the vertical direction can be carried out simultaneously, thus effectively increasing the spraying range when the maintenance head sprays gas or mixed water vapor.

[0030] 4. The method provided by this invention can perform daily maintenance on the road surface using a variety of drainage and ventilation methods. It uses less water and is less likely to cause water accumulation on the road surface. It also has different cleaning functions for cleaning different types of road debris. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the maintenance head in a road maintenance vehicle proposed in this invention;

[0032] Figure 2 This is a cross-sectional view of the maintenance machine head in a road maintenance vehicle proposed in this invention. Figure 1 ;

[0033] Figure 3 The present invention proposes a road maintenance vehicle in Figure 2 Floor plan;

[0034] Figure 4 This is a cross-sectional view of the maintenance machine head in a road maintenance vehicle proposed in this invention. Figure 2 ;

[0035] Figure 5 The present invention proposes a road maintenance vehicle in Figure 4 Floor plan;

[0036] Figure 6 This is a schematic diagram of the bottom structure of the cover, fixing frame and drive unit in a road maintenance vehicle proposed in this invention;

[0037] Figure 7 This is a schematic diagram of the structure of the cover in a road maintenance vehicle proposed in this invention;

[0038] Figure 8 This is a cross-sectional view of a roller brush assembly in a road maintenance vehicle according to the present invention.

[0039] Figure 9 This is an exploded view of the adjustment mechanism in a road maintenance vehicle proposed in this invention;

[0040] Figure 10 This is a diagram illustrating the effect of deformation of the maintenance machine head in a road maintenance vehicle according to the present invention.

[0041] Figure 11 This is a schematic diagram of the installation structure of a road maintenance vehicle proposed in this invention.

[0042] In the diagram: 1. Fixing frame; 2. Cover; 3. Water pipe; 4. Chain; 5. Second sprocket; 6. Positioning roller; 7. Driven gear; 8. Driven gear; 9. First motor; 10. Brake frame; 11. Rectangular frame; 12. Turntable bearing; 13. Hydraulic motor; 14. Hydraulic cylinder; 15. Second motor; 16. Support frame; 17. Lifting platform; 18. Spray head; 19. Duct fan; 20. First sprocket; 21. 21. Roller brush; 22. Tie rod; 23. Worm gear; 24. Worm; 25. Inclined part; 26. Horizontal part; 27. Rotating shaft; 28. Arc-shaped notch; 29. ​​Water collection trough; 30. Gap; 31. Support tube; 32. Eccentric block; 33. Horizontal shaft; 34. Rubber block; 35. Scroll spring; 36. Drive gear; 37. Internal gear ring; 38. Vehicle body; 39. Generator set; 40. Hydraulic press unit; 41. Water tank. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example 1:

[0045] See attached document Figure 1-11A road maintenance vehicle includes a vehicle body 38, and a water tank 41, a generator set 39, a hydraulic press 40, a lift 17, a support frame 16, and a maintenance head mounted on the vehicle body 38. The maintenance head consists of a fixed frame 1 and two covers 2. One end of the support frame 16 is mounted on the lift 17. The lower end of the fixed frame 1 is rotatably connected to two support shafts via rolling bearings. The shaft walls of the two support shafts are respectively fixedly connected to the side walls of the two covers 2. Each of the two covers 2 is connected to a roller brush assembly via a horizontal shaft 33. The roller brush assembly includes a support tube 31, and multiple eccentric blocks 32 are fixedly connected to the inner wall of the support tube 31. The horizontal shaft 33 is located inside the support tube 31 and is fixedly connected to multiple elastic connectors. A roller brush 21 is fixedly connected to the tube wall of the support tube 31. The elastic connectors include two spiral springs 35 with opposite spiral directions. A rubber block 34 is provided on one side of the spiral spring 35, and the center of the rubber block 34 is fixedly... The rubber block 34 is fixed on the shaft wall of the horizontal shaft 33. Multiple circumferentially distributed energy-absorbing holes are opened on the side wall of the rubber block 34. One end of the vortex spring 35 is fixedly connected to the inner wall of the support tube 31, and the other end of the vortex spring 35 is fixedly connected to the shaft wall of the horizontal shaft 33. The lower end of the cover 2 is provided with a horizontal part 26. One side of the horizontal part 26 is provided with an inclined part 25. The inclined part 25 is rotatably connected to the horizontal shaft 33 through a bearing seat. A rectangular opening is opened on the inclined part 25. The roller brush assembly is located in the rectangular opening. A positioning roller 6 is rotatably connected to the shaft wall of the horizontal shaft 33 through a sealed bearing. The diameter of the positioning roller 6 is smaller than the diameter of the roller brush assembly. Multiple evenly distributed water collection grooves 29 are opened on the horizontal part 26 inside the cover 2. Multiple drainage holes are opened through one side of each of the multiple water collection grooves 29. The horizontal shaft 33 is rotatably connected to the side wall of the fixed frame 1 through a rolling bearing. A transmission mechanism is installed at one end of the fixed frame 1. The transmission mechanism is connected to the roller brush assembly inside the two covers 2.

[0046] The transmission mechanism drives the two roller brush assemblies to rotate and sweep the road surface without generating dust. The upper end of the fixed frame 1 is connected to the side wall of the support frame 16 via an adjustment mechanism. The adjustment mechanism is used to adjust the tilt angle of the two covers 2 on the fixed frame 1 in multiple directions. A drive unit is installed at one end of the fixed frame 1. The drive unit includes two worm gears 23, which mesh with a worm 24. A hydraulic motor 13 is fixedly connected to one end of the fixed frame 1. The output end of the hydraulic motor 13 is fixedly connected to the upper end of the worm 24. The two worm gears 23 are respectively fixedly connected to one end of two support shafts coaxially. The drive unit is used to control the tilt angle between the two covers 2. A T-shaped... The rod has two arc-shaped notches 28 on opposite sides of the two covers 2. The two arc-shaped notches 28 on the same side together form an air passage. The lower end of the vertical part of the T-shaped rod extends between the two covers 2 and is fixedly connected to a duct fan 19. The duct fan 19 is coaxially set with the air passage. The upper edge of the cover 2 has a notch 30 that matches the vertical part of the T-shaped rod. A water pipe 3 is rotatably connected inside the cover 2 through a rolling bearing. Multiple water nozzles 18 are fixedly connected to the wall of the water pipe 3. A support arm is fixedly connected to the wall of the water pipe 3. One end of the support arm is rotatably connected to a pull rod 22 through a pin. One end of the pull rod 22 is rotatably connected to a fixing block through a pin. The fixing block is fixed to the vertical part of the T-shaped rod.

[0047] In use, the invention utilizes a lifting platform 17 to mount the maintenance head onto the vehicle body 38, and requires the connection of water, electrical, and hydraulic lines. The water system is equipped with a high-pressure water pump, which is connected to the water pipe 3 via a high-pressure water pipe (not shown in the figure). Water is then injected into the water tank 41. During operation, the hydraulic motor 13 is activated, driving the worm gear 24 to rotate the two worm wheels 23 in opposite directions. As the worm wheels 23 rotate, they drive the support shaft, causing the cover 2 to swing. This allows control of the tilt angle between the two covers 2. Then, the lifting mechanism drives the support frame 16 to move the maintenance head downwards until the positioning roller 6 contacts the ground, thereby bringing the roller brush assembly installed inside the cover 2 into contact with the ground. Afterwards, the first motor 9 is activated to drive the two roller brush assemblies to rotate and clean the road surface. During the rotation of the roller brush assemblies, the transmission between the horizontal shaft 33 and the support pipe 31 is achieved through the rubber block 34 of the elastic connector and the spiral spring 35. The eccentric block 32 causes the support pipe 31 to rotate and generate eccentric displacement, and the elastic connector enables elastic reset. This allows the roller brush assembly to generate different frictional forces with the ground during rotation, which is beneficial for cleaning dirt from the road surface. Furthermore, opening the water path pressurizes the water in the water tank 41 and sprays it out from the water pipe 3 and the spray head 18 to form a water mist, reducing dust generated during the rotation of the cleaning assembly. Additionally, the drive unit drives the two covers 2 to reset, and the duct fan 19 generates airflow, which is discharged from the flow channel. When the spray head 18 sprays water, the airflow carrying water mist is directly discharged and sprayed onto the ground. During water spraying, the adjustment mechanism can be activated, utilizing the second motor 15, drive gear 36, internal gear ring 37, turntable bearing 12, and hydraulic cylinder 14 to adjust the tilt angle of the two covers 2 on the fixed frame 1 in multiple directions. Figure 10 As shown, when the cover 2 is tilted, the adjustment mechanism can be activated to drive the cover 2 to rotate around the axis of the turntable bearing 12, thus enabling water to be sprayed in different directions and at different heights.

[0048] Example 2: The difference from Example 1 is that;

[0049] See attached document Figure 2-5 The transmission mechanism includes two driven gears 7, which mesh together with a driving gear 8. A half-shaft is fixedly connected to the center of the driven gear 7, and the half-shaft is coaxial with the support shaft. The half-shaft is rotatably connected to one side of the fixed frame 1 through a rolling bearing. A first sprocket 20 is fixedly connected to one end of the half-shaft. A chain 4 is wound around the first sprocket 20, and a second sprocket 5 is wound inside the chain 4. A main shaft is fixedly connected to one side of the second sprocket 5. One end of the main shaft is fixedly connected to one end of the horizontal shaft 33. A first motor 9 is fixedly connected to the wall of the T-shaped rod. The output end of the first motor 9 is fixedly connected to one side of the driving gear 8.

[0050] The transmission mechanism of this invention, when in use, starts the first motor 9 to drive the driving gear 8 to rotate the driven gear 7. When the driven gear 7 rotates, it drives the first sprocket 20 through the half shaft to drive the chain 4 to link with the second sprocket 5. When the second sprocket 5 rotates, it drives the main shaft to rotate the horizontal shaft 33. The rotation of the horizontal shaft 33 drives the roller brush assembly to rotate through the elastic connector. Since the half shaft and the support shaft are coaxial, the distance between the first sprocket 20 and the second sprocket 5 remains unchanged when the cover 2 swings, thereby enabling the roller brush assembly to clean the ground.

[0051] Example 3: The difference from Example 1 is that;

[0052] See attached document Figure 9-10 The adjustment mechanism includes two brake frames 10, with bushings connected to the side walls of the two brake frames 10 via pins. One end of each bushing is fixedly connected to a hydraulic cylinder 14. The lower end of the support frame 16 is fixedly connected to a turntable bearing 12. The upper platform of the turntable bearing 12 is fixedly connected to the support frame 16. The lower platform of the turntable bearing 12 is fixedly connected to a rectangular frame 11, and the lower end of the rectangular frame 11 is rotatably connected to a rotating shaft 27 via a bearing seat. The rotating shaft 27 is fixed on the fixed frame 1. Support seats are fixedly connected to opposite sides of the rectangular frame 11. The support seats are rotatably connected to the cylinder body of the hydraulic cylinder 14 via a connecting shaft. An internal gear ring 37 is fixedly connected inside the lower platform of the turntable bearing 12. The internal gear ring 37 meshes with a drive gear 36. A second motor 15 is fixedly connected to one side of the support frame 16. The output end of the second motor 15 is fixedly connected to one side of the drive gear 36.

[0053] The adjustment mechanism provided in this invention, when in use, activates the second motor 15 to drive the drive gear 36, causing the internal gear ring 37 to rotate. The rotation of the internal gear ring 37 drives the lower platform of the turntable bearing 12, causing the rectangular frame 11 to rotate. When the rectangular frame 11 rotates, it drives the rotating shaft, causing the fixed frame 1 to rotate circumferentially in the vertical direction. Figure 10 As shown, when the hydraulic cylinders 14 on both sides are in opposite working states, that is, one is retracting and the other is releasing, when the length of the piston rod 14 changes, the fixed frame 1 and the rectangular frame 11 can swing around the rotation axis 11. In this way, the tilt angle of the fixed frame 1 in the horizontal direction can be adjusted by using the length of the piston rod extended by the hydraulic cylinder 14, and the rotation adjustment in the vertical direction can be carried out simultaneously. This can effectively increase the spraying range when the maintenance head sprays gas or mixed water vapor.

[0054] Example 4: The present invention also provides a method for operating a road maintenance vehicle, comprising the following steps:

[0055] Step 1: Use the lift 17 to install the maintenance head on the vehicle body 38, and install the required water, electrical and hydraulic lines, and then fill the water tank 41 with water.

[0056] Step 2: Use the drive unit to control the tilt angle between the two covers 2 so that the roller brush assembly installed inside the cover 2 contacts the ground. Then start the first motor 9 to drive the two roller brush assemblies to rotate and sweep the road surface. At the same time, turn on the water circuit so that the water in the water tank 41 is pressurized and sprayed out from the water pipe 3 and the spray head 18 to form water mist, which reduces the dust generated when the sweeping assembly rotates. In this way, mechanical cleaning and maintenance of the road surface can be achieved.

[0057] Step 3: Use the drive unit to drive the two covers 2 to reset, turn on the duct fan 19 to generate airflow and discharge it from the flow channel. By adjusting the tilt angle of the cover 2, the discharged airflow can be directly blown to the ground, thus achieving indirect airflow cleaning of the road surface. When the water nozzle 18 sprays water, the airflow carries water mist and is directly discharged to spray onto the ground. At this time, the airflow carries water mist, which makes it difficult for dust and debris on the ground to splash and form dust. It is especially suitable for cleaning up fallen leaves, dead branches and light garbage on the road surface.

[0058] Step 4: Start the adjustment mechanism. Through the operation of the hydraulic motor 13, worm gear 23, and worm 24, the tilt angle of the two covers 2 on the fixed frame 1 in multiple directions can be adjusted to spray water in different directions and at different heights. When the cover 2 is tilted, the airflow blown by the duct fan 19 can be tilted and discharged to a higher place. At this time, the airflow can blow towards the bushes or trees in the green belt, causing the dead leaves on the trees to fall off. In addition, after the leaves fall off, Step 3 can be repeated to blow and sweep them, and then they can be collected and processed.

[0059] The method provided by this invention can perform daily maintenance on the road surface using a variety of drainage and ventilation methods. It uses less water and is less likely to cause water accumulation on the road surface. It also has different cleaning functions to clean up different types of road debris.

[0060] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A road maintenance vehicle, comprising a vehicle body (38), and a water tank (41), a generator set (39), a hydraulic press set (40), a lift (17), a support frame (16), and a maintenance head mounted on the vehicle body (38), wherein the maintenance head is composed of a fixed frame (1) and two covers (2), and one end of the support frame (16) is mounted on the lift (17), characterized in that: The lower end of the fixed frame (1) is rotatably connected to two support shafts by rolling bearings. The shaft walls of the two support shafts are respectively fixedly connected to the side walls of the two covers (2). The two covers (2) are each connected to a roller brush assembly through a horizontal shaft (33). The horizontal shaft (33) is rotatably connected to the side wall of the fixed frame (1) through rolling bearings. A transmission mechanism is installed at one end of the fixed frame (1). The transmission mechanism is connected to the roller brush assembly inside the two covers (2). The transmission mechanism is used to drive the two roller brush assemblies to rotate and sweep the road surface without generating dust during sweeping. The upper end of the fixed frame (1) is connected to the side wall of the support frame (16) through an adjustment mechanism. The adjustment mechanism is used to adjust the tilt angle of the two covers (2) on the fixed frame (1) in multiple directions. A drive unit is installed at one end of the fixed frame (1), the drive unit is used to control the tilt angle between the two covers (2), and a T-shaped rod is fixedly connected to the fixed frame (1); Both sides of the two covers (2) are provided with arc-shaped notches (28). The two arc-shaped notches (28) on the same side together form an air passage. The lower end of the vertical part of the T-shaped rod extends between the two covers (2) and is fixedly connected to a duct fan (19). The duct fan (19) is coaxially arranged with the air passage. The upper edge of the cover (2) is provided with a notch (30) that matches the wall of the vertical part of the T-shaped rod. Inside the cover (2), a water pipe (3) is rotatably connected via a rolling bearing. Multiple water nozzles (18) are fixedly connected to the wall of the water pipe (3). A support arm is fixedly connected to the wall of the water pipe (3). One end of the support arm is rotatably connected to a pull rod (22) via a pin. One end of the pull rod (22) is rotatably connected to a fixing block via a pin. The fixing block is fixed to the vertical part of the T-shaped rod wall. The adjustment mechanism includes two brake frames (10), and the side walls of the two brake frames (10) are fitted with bushings by pins. One end of each bushing is fixedly connected to a hydraulic cylinder (14). The lower end of the support frame (16) is fixedly connected to a turntable bearing (12). The lower platform of the turntable bearing (12) is fixedly connected to a rectangular frame (11), and the lower end of the rectangular frame (11) is rotatably connected to a rotating shaft (27) through a bearing seat. The rotating shaft (27) is fixed on the fixed frame (1). Support seats are fixedly connected to opposite sides of the rectangular frame (11). The support seats are rotatably connected to the cylinder body of the hydraulic cylinder (14) through a connecting shaft. An internal gear ring (37) is fixedly connected inside the lower platform of the turntable bearing (12). The internal gear ring (37) meshes with a drive gear (36). A second motor (15) is fixedly connected to one side of the support frame (16), and the output end of the second motor (15) is fixedly connected to one side of the drive gear (36).

2. The road maintenance vehicle according to claim 1, characterized in that: The transmission mechanism includes two driven gears (7), which mesh together with a driving gear (8). A half shaft is fixedly connected to the center of the driven gear (7), and the half shaft is coaxial with the support shaft. The half shaft is rotatably connected to one side of the fixed frame (1) through a rolling bearing. A first sprocket (20) is fixedly connected to one end of the half shaft. A chain (4) is wound around the first sprocket (20). A second sprocket (5) is wound inside the chain (4). A main shaft is fixedly connected to one side of the second sprocket (5). One end of the main shaft is fixedly connected to one end of the horizontal shaft (33). A first motor (9) is fixedly connected to the wall of the T-shaped rod. The output end of the first motor (9) is fixedly connected to one side of the driving gear (8).

3. A road maintenance vehicle according to claim 1, characterized in that: The drive unit includes two worm gears (23), and a worm (24) meshes between the two worm gears (23). A hydraulic motor (13) is fixedly connected to one end of the fixed frame (1). The output end of the hydraulic motor (13) is fixedly connected to the upper end of the worm (24). The two worm gears (23) are respectively fixedly connected to one end of two support shafts.

4. A road maintenance vehicle according to claim 1, characterized in that: The lower end of the cover (2) is provided with a horizontal part (26), and one side of the horizontal part (26) is provided with an inclined part (25). The inclined part (25) is rotatably connected to the horizontal shaft (33) through a bearing seat. A rectangular opening is provided on the inclined part (25). The roller brush assembly is located inside the rectangular opening. A positioning roller (6) is rotatably connected to the shaft wall of the horizontal shaft (33) through a sealed bearing. The diameter of the positioning roller (6) is smaller than the diameter of the roller brush assembly. Multiple evenly distributed water collection grooves (29) are provided on the horizontal part (26) inside the cover (2). Multiple drainage holes are provided through one side of each of the multiple water collection grooves (29).

5. A road maintenance vehicle according to claim 1, characterized in that: The roller brush assembly includes a support tube (31), with multiple eccentric blocks (32) fixedly connected to the inner wall of the support tube (31), and a horizontal shaft (33) located inside the support tube (31) and fixedly connected to multiple elastic connectors. A roller brush (21) is fixedly connected to the tube wall of the support tube (31).

6. A road maintenance vehicle according to claim 5, characterized in that: The elastic connector includes two spiral springs (35) with opposite spiral directions. A rubber block (34) is provided on one side of each spiral spring (35). The center of the rubber block (34) is fixed to the shaft wall of the horizontal shaft (33). Multiple circumferentially distributed energy-absorbing holes are provided on the side wall of the rubber block (34). One end of the spiral spring (35) is fixedly connected to the inner wall of the support tube (31), and the other end of the spiral spring (35) is fixedly connected to the shaft wall of the horizontal shaft (33).

7. A method for operating a road maintenance vehicle according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Use the lift (17) to install the maintenance machine head on the vehicle body (38), and connect the water, electrical circuit and hydraulic pipeline according to the installation requirements, and then fill the water tank (41) with water; Step 2: Use the drive unit to control the tilt angle between the two covers (2) so that the roller brush assembly installed inside the cover (2) contacts the ground. Then start the first motor (9) to drive the two roller brush assemblies to rotate and sweep the road surface. Open the water circuit so that the water in the water tank (41) is pressurized and sprayed out from the water pipe (3) and the spray head (18) to form water mist, reducing the dust generated when the roller brush assembly rotates. Step 3: Use the drive unit to drive the two covers (2) to reset, turn on the duct fan (19) to generate airflow and discharge it from the air passage. When the water spray head (18) sprays water, the airflow carries water mist and sprays it directly onto the ground. Step 4: Start the adjustment mechanism. Through the operation of the second motor (15), drive gear (36), internal gear ring (37), turntable bearing (12) and hydraulic cylinder (14), the tilt angle of the two covers (2) on the fixed frame (1) in multiple directions is adjusted for spraying water in different directions and at different heights.

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