An automatic road marking drawing device and method

Abstract

This application provides an automatic road marking drawing device and method, including a drawing vehicle. A material bin is provided in the middle of the top surface of the drawing vehicle. A ground-contact dust collection frame is connected to one side of the front end of the drawing vehicle. The ground-contact dust collection frame slides elastically and vertically under the drawing vehicle. A spray box is fixed in the middle of the side of the drawing vehicle connected to the ground-contact dust collection frame. The spray nozzle of the spray box is located at the center of the ground-contact dust collection frame. A ventilation component is provided inside the end of the drawing vehicle connected to the ground-contact dust collection frame. This invention can adheringly absorb dust on the road surface directly in front of the spray box, completely removing road dust and allowing the road marking spray material to fully fuse with the road surface, thereby ensuring the adhesion strength of the road marking material. At the same time, it can achieve dust-free emission or recycling, and is used to supply high-pressure clean air to the spray box for spraying the marking material, avoiding blockage inside the spray box.

Description

Technical Field

[0001] This invention relates to the field of road marking drawing technology, and more specifically, to an automatic road marking drawing device and method. Background Technology

[0002] Road marking construction is a complex engineering activity involving multiple steps and technical aspects. It aims to guide and regulate traffic behavior by marking lines, arrows, and text on the road surface, ensuring the safety of road users and smooth traffic flow. During construction, it is necessary to consider not only the clarity, durability, and minimization of environmental impact of the markings, but also to ensure the safety and efficiency of the construction.

[0003] Road marking painting requires melting and mixing the marking material, which is then sprayed onto the road surface. Traditional road marking painting equipment involves manually controlling the movement of a painting vehicle. The vehicle uses a spray tank on one side to spray the uniformly mixed material, along with the glass beads and surface coating contained in the marking, onto the road surface. However, the road surface inevitably contains dust. Directly spraying the markings onto the road surface will cause the dust layer to block the gaps between the marking material and the road surface, making it difficult for the road marking material to fully integrate with the micro-gaps in the road surface. After the road markings are painted, they are easily detached from the road surface due to pressure or rain.

[0004] Therefore, we have made improvements to this by proposing an automatic road marking drawing device and method. Summary of the Invention

[0005] The purpose of this invention is to address the current problem of dust in road marking painting.

[0006] To achieve the above-mentioned objectives, the present invention provides an automatic road marking drawing device and method to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] An automatic road marking drawing device includes a drawing vehicle. A material bin is located in the center of the top surface of the drawing vehicle. A ground-contact dust collection frame is connected to one side of the front end of the drawing vehicle. The ground-contact dust collection frame slides elastically and vertically below the drawing vehicle. A spray box is fixed in the center of the side of the drawing vehicle connected to the ground-contact dust collection frame. The spray nozzle of the spray box is located at the center of the ground-contact dust collection frame. An exhaust component is provided inside the end of the drawing vehicle connected to the ground-contact dust collection frame. The air intake of the exhaust component is connected to the ground-contact dust collection frame. An air filter box is provided at the air outlet of the exhaust component. The exhaust component is connected to the upper inner side of the air filter box. In the driving state, the exhaust component and the air filter box are driven. A dust filter component is provided on the upper inner side of the air filter box. An air outlet duct is connected to the side of the air filter box away from the exhaust component. The side of the air outlet duct away from the air filter box is connected to the material bin and the spray box. The side of the air filter box near the air outlet duct is connected to the outside of the drawing vehicle. A stirring component is provided inside the material bin.

[0009] As a preferred technical solution of this application, the material bin includes a marking mixing bin, a glass bead bin, and a coating bin. The marking mixing bin is embedded inside the center of the painted vehicle roof surface. The glass bead bin is embedded on the side of the painted vehicle roof surface away from the ground-contact vacuum cleaner. The coating bin is located on the side of the glass bead bin away from the marking mixing bin. The marking mixing bin, the glass bead bin, and the coating bin are connected to a feeding pipe. The two ends of the feeding pipe are respectively connected to an air outlet and a spray box.

[0010] As a preferred technical solution of this application, the ground-contact vacuum cleaner includes an I-shaped frame, with rollers rotatably connected to the inner sides of both ends of the I-shaped frame. A vacuum port is opened at the center of the bottom surface of the I-shaped frame, and a corrugated vacuum pipe is connected to the top of the vacuum port. The far end of the corrugated vacuum pipe is connected to the air inlet of the exhaust component. Symmetrical telescopic frames are provided on both sides of the top of the I-shaped frame. A rebound rod is limited and connected to the inner side of the output end of the telescopic frame. A buffer spring is provided on the top surface of the rebound rod. The rebound rod slides elastically on the inner side of the output end of the rebound rod through the buffer spring. The top end of the rebound rod is fixed to the outer wall of the drawing vehicle.

[0011] As a preferred technical solution of this application, the spray box includes a marking spray can, a glass bead spray can, and a coating spray can. The marking spray can is fixed to the middle of the side of the painting vehicle. The spray nozzle of the marking spray can is parallel to the center of the ground-contact dust collection frame. The glass bead spray can is connected to the side of the marking spray can away from the ground-contact dust collection frame and to the side of the glass bead spray can opposite to the marking spray can.

[0012] As a preferred technical solution of this application, the exhaust assembly includes an exhaust box, which is fixed inside the drawing vehicle. An exhaust impeller is provided in the middle of the exhaust box, and an exhaust motor is connected to one end of the exhaust impeller. The air inlet of the exhaust box is connected to a corrugated dust suction pipe, and a wind power storage chamber is provided at the air outlet of the exhaust box. A driven blade is rotatably connected inside the wind power storage chamber. A transmission gear is connected to the end of the driven blade away from the wind power storage chamber. A transmission toothed belt is sleeved on the outside of the transmission gear, and the far end of the transmission toothed belt is connected to the air filter box.

[0013] As a preferred technical solution of this application, the air filter box is provided with a pressurized water box at the bottom. The pressurized water box has a water inlet on one side of its top, which is connected to the interior of the air filter box. A spiral pressurizing plate is rotatably connected to the inside of the pressurized water box. Half of the length of the pressurized water box near the water inlet is circular, and half of the length of the pressurized water box away from the water inlet is rectangular. One end of the spiral pressurizing plate extends to the circular pressurized water box and is rotatably connected to it in a sealed state. The end of the spiral pressurizing plate located outside the pressurized water box is driven by a transmission gear and a transmission belt. The end of the pressurized water box away from the spiral pressurizing plate is connected to a circulating water pipe, and the other end of the circulating water pipe is connected to a spray box located on the top surface inside the air filter box.

[0014] As a preferred technical solution of this application, the dust filtration assembly includes two symmetrical sets of filter layers. The ends of the filter layers are fixed to the inner wall of the air filter box. The water spray box is located between the filter layers. Symmetrical fixing rods are provided below the water spray box. Equally spaced dust scrapers are connected between the fixing rods. The two ends of the dust scrapers slide against the surface of the filter layers. A lifting and rebounding rod is connected to the bottom of the fixing rod. The lifting and rebounding rod includes a rebounding and storing rod. The rebounding and storing rod is fixed to the bottom surface of the air filter box. A rebounding telescopic rod is slidably connected to the inner side of the top of the rebounding and storing rod. A waterproof sleeve is fitted on the outer side of the top of the rebounding and telescopic rod. The top of the rebounding and telescopic rod is fixedly connected to the bottom of the fixing rod. The waterproof sleeve is fitted on the outer side of the top of the rebounding and storing rod. A spring is provided on the inner side of the rebounding and storing rod. The bottom of the rebounding and telescopic rod slides elastically on the inner side of the rebounding and storing rod through the spring.

[0015] As a preferred technical solution of this application, the air outlet duct includes a circulating air duct, which is connected to and located on one side of the air filter box. The side of the air outlet duct facing away from the air filter box is connected to the feeding pipe. A first sealing plate is fitted and slidably attached to the side of the air outlet duct connected to the feeding pipe. A first push rod is connected to the top of the first sealing plate and is fixed inside the drawing carriage. An exhaust port is provided in the air filter box near the air outlet duct. A second sealing plate is slidably attached and sealed inside the exhaust port. A second push rod is connected to one side of the second sealing plate and is fixed inside the drawing carriage. In the driving state, the first push rod drives the first sealing plate to rise, and the second push rod drives the second sealing plate to close. The first push rod drives the first sealing plate to fall, and the second push rod drives the second sealing plate to open.

[0016] As a preferred technical solution of this application, the stirring assembly includes a sealing cover, a stirring motor connected to the center of the top surface of the sealing cover, a stirring shaft connected to the output end of the stirring motor, the stirring shaft passing through the center of the marking mixing barrel, stirring rods arranged in a distributed manner connected to the outer surface of the stirring shaft, and a spiral scraper connected to the far end of the stirring rod, the spiral scraper sliding against the inner wall of the marking mixing barrel.

[0017] The present invention provides a method for using an automatic road marking drawing device, comprising the following steps:

[0018] Step 1: Pour epoxy resin, hardener, and cement into the marking mixing bucket according to the ratio, pour glass beads into the glass bead container, and pour coating material into the coating material container.

[0019] Step 2: Place the sealing cap on the top of the marking mixing bucket, start the spiral heating tube inside the marking mixing bucket to heat the materials inside, then start the stirring motor to drive the stirring shaft to rotate the stirring rod and spiral scraper to stir and mix the materials inside the bucket;

[0020] Step 3: Start the exhaust motor to drive the exhaust impeller to rotate. The dust suction port on the bottom of the I-beam frame will adsorb the dust on the ground. The dust-containing air will be transported through the exhaust box to the air filter box. After being adsorbed and filtered by the dust filter component, the clean air will be discharged through the exhaust port. Start the telescopic frame to push the I-beam frame down. The rollers will contact the ground, and the rebound rod will retract halfway inside the telescopic frame.

[0021] Step 4: Move the drawing vehicle;

[0022] Step 5: When the painting vehicle moves to the location where the road markings need to be sprayed, simultaneously activate the first and second push rods. The exhaust port will close, and the air duct will be under high pressure. The high-pressure air will be conveyed through the feeding pipe to the bottom of the marking mixing tank, glass bead tank, and film coating tank, driving the material into the spray box. The spraying material is then sprayed out through the atomizing nozzles at the output ports of the marking spray can, glass bead spray can, and film coating spray can under the influence of the high-pressure air, and sprayed onto the cleaned inner side of the road surface.

[0023] Step Six: When drawing the interval markings, repeatedly switch the first push rod and the second push rod to keep the spray box in the on / off state.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the design of the ground-contact dust suction frame, it can adsorb the dust on the road surface directly in front of the spray box, completely remove the road dust, and allow the road marking spray material to fully integrate with the road surface, thereby ensuring the bonding strength of the road marking material. At the same time, the adsorbed road dust can be filtered by water adsorption to achieve dust-free discharge, or it can be recycled to deliver high-pressure clean air to the spray box for spraying the marking material, avoiding blockage inside the spray box.

[0025] In the scheme of this application:

[0026] 1. The present invention has three material barrels, which can store three kinds of road marking materials. The material is transported into the spray box by the filtered air provided by the exhaust component to complete the multi-layer spraying of the road marking material. The marking mixing barrel is equipped with a heating chamber, which can directly mix and heat the marking materials to be sprayed, improving the convenience of use. The heating chamber is equipped with a heat insulation chamber on the outside, which can improve the safety of the equipment during operation.

[0027] 2. The ground-contact vacuum cleaner frame of this invention allows for a smaller gap between the air intake of the exhaust component and the ground, enabling it to pick up dust from deeper depths and completely remove dust from inside the crevices of the ground. At the same time, the smaller gap between the air intake and the ground increases the suction power at the air intake position, enhancing the dust adsorption effect. The top surface of the I-shaped frame is connected by a telescopic frame and a rebound rod, which allows for free control of the height of the ground-contact vacuum cleaner frame from the ground. During movement, the rebound rod keeps the I-shaped frame in contact with the ground.

[0028] 3. The exhaust component of this invention can provide strong suction force for the ground-contact vacuum cleaner, ensuring the suction effect of the vacuum port on dust. In addition, the air outlet of the exhaust component adopts a wind power storage chamber design, which can recover the power of the exhaust component by storing the air output and conduct it to the air filter box, thereby improving the power utilization rate.

[0029] 4. The air filter box of the present invention can be powered by the exhaust component to drive the spiral pressure plate to deliver water to the upper part of the air filter box through water injection, so as to flush the inside of the dust filter component, improve the dust filter component's adsorption and filtration function for dust in the air, and the flushing of water can provide pressure to drive the dust scraper inside the dust filter component to rise and fall, thereby realizing the self-cleaning function of the dust filter component.

[0030] 5. The air outlet duct of the present invention can discharge or recycle the purified and filtered air to the outside. Through the cooperation of the first sealing plate and the second sealing plate, the air outlet duct is sealed and the air is discharged. In the sealed state, the purified air can be stored inside the air filter box, forming a high-pressure environment to be transported into the inside of the feeding pipe, realizing the recycling of air and driving the spray box to spray paint to the outside.

[0031] 6. The present invention adds a stirring component to the inside of the marking mixing bucket, which can stir and mix the marking spraying material after it is added to the marking mixing bucket and heated, thereby improving the uniformity of the material during spraying. At the same time, the end of the stirring rod is connected to a spiral scraper, which is used to scrape the material on the inner wall of the marking mixing bucket, and can also improve the stirring and mixing efficiency of the material inside the marking mixing bucket by using the downward pressure function. Attached Figure Description

[0032] Figure 1 A schematic diagram of a preferred embodiment of the automatic road marking drawing device and method provided by the present invention;

[0033] Figure 2 for Figure 1 The diagram shows the linkage structure inside the vehicle.

[0034] Figure 3 for Figure 2 The diagram shows a side view of the structure.

[0035] Figure 4 for Figure 3 The diagram shown is a magnified cross-sectional view of the marking mixing barrel.

[0036] Figure 5 for Figure 3 An enlarged structural diagram of the location of the ground-contact vacuum box shown in the image;

[0037] Figure 6 for Figure 5 An enlarged schematic diagram of the structure as shown in the side view;

[0038] Figure 7 for Figure 6 The diagram shows an enlarged cross-sectional view of the bottom surface of the ground-contact vacuum box, viewed from below.

[0039] Figure 8 for Figure 6 The diagram shown is an exploded and enlarged view of the exhaust assembly.

[0040] Figure 9 for Figure 5 The diagram shows a cross-sectional view of the air filter box.

[0041] Figure 10 for Figure 6 The exploded cross-sectional view of the air filter box shown is shown.

[0042] Figure 11 for Figure 10 The diagram shows an exploded view of the dust filter assembly.

[0043] Figure 12 for Figure 11 The diagram shows a cross-sectional exploded view of the middle section of the lifting and rebounding rod.

[0044] The image shows:

[0045] 1. Marking vehicle; 2. Material bucket; 3. Ground-contact dust collection rack; 4. Spray box; 5. Exhaust assembly; 6. Air filter box; 7. Dust filter assembly; 8. Air outlet; 9. Mixing assembly; 21. Marking mixing bucket; 22. Glass bead bucket; 23. Coating bucket; 24. Feeding pipe; 211. Heating chamber; 212. Insulation chamber; 213. Spiral heating tube; 31. I-beam frame; 32. Rollers; 33. Dust suction port; 34. Corrugated dust suction pipe; 35. Telescopic frame; 36. Rebound rod; 37. Buffer spring; 41. Marking spray can; 42. Glass bead spray can; 43. Coating spray can; 51. Exhaust box; 52. Exhaust impeller; 53. Exhaust motor; 54. 55. Wind power storage chamber; 56. Driven blade; 57. Transmission gear; 68. Transmission toothed belt; 69. Pressurized water box; 60. Water inlet; 61. Spiral pressurizing plate; 62. Circulating water pipe; 63. Spray box; 74. Filter layer; 75. Fixing rod; 76. Dust scraper; 77. Lifting and rebounding rod; 78. Rebound storage rod; 79. Rebound telescopic rod; 70. Waterproof sleeve; 71. Spring; 82. Circulating air duct; 83. First sealing plate; 84. First push rod; 85. Exhaust port; 86. Second sealing plate; 97. Second push rod; 98. Sealing cover; 99. Stirring motor; 90. Stirring shaft; 91. Stirring rod; 92. Spiral scraper. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0047] As described in the background section, road markings cannot be dusted.

[0048] To solve this technical problem, the present invention provides an automatic road marking drawing device and method, which is applied to the adsorption-type complete dust removal of road markings.

[0049] For details, please refer to Figures 1-12 The aforementioned automatic road marking drawing device specifically includes:

[0050] A drawing cart 1 has a material bucket 2 located in the center of its top surface. A ground-contact vacuum frame 3 is connected to one side of the front end of the drawing cart 1. The ground-contact vacuum frame 3 slides elastically and vertically below the drawing cart 1. A spray box 4 is fixed to the center of the side of the drawing cart 1 connected to the ground-contact vacuum frame 3. The spray nozzle of the spray box 4 is located at the center of the ground-contact vacuum frame 3. An exhaust assembly 5 is located inside the end of the drawing cart 1 connected to the ground-contact vacuum frame 3. The exhaust port of the exhaust assembly 5 is connected to the ground-contact vacuum frame 3, and the exhaust outlet of the exhaust assembly 5 is also connected to the ground-contact vacuum frame 3. An air filter box 6 is provided, and the exhaust assembly 5 is connected to the upper inner side of the air filter box 6. In the driving state, the exhaust assembly 5 is driven by the air filter box 6. A dust filter assembly 7 is provided on the upper inner side of the air filter box 6. An air outlet duct 8 is connected to the side of the air filter box 6 away from the exhaust assembly 5. The side of the air outlet duct 8 away from the air filter box 6 is connected to the material bucket 2 and the spray box 4. The side of the air filter box 6 near the air outlet duct 8 is connected to the outside of the drawing vehicle 1. A stirring assembly 9 is provided inside the material bucket 2.

[0051] The present invention provides an automatic road marking drawing device. Through the design of the ground-contact dust suction frame 3, it can adsorb the dust on the road surface directly in front of the spray box 4, completely remove the road dust, and allow the road marking spray material to fully integrate with the road surface, thereby ensuring the bonding strength of the road marking material. At the same time, the adsorbed road dust can be filtered by water adsorption to achieve dust-free discharge or be recycled to deliver high-pressure clean air to the spray box 4 for spraying the marking material, thus avoiding blockage inside the spray box 4.

[0052] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0053] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0054] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0055] Example 1

[0056] Please refer to Figures 1-12 An automatic road marking drawing device is disclosed. The material bin 2 includes a marking mixing bin 21, a glass bead bin 22, and a coating bin 23. The marking mixing bin 21 is embedded inside the center of the top surface of the drawing vehicle 1. The glass bead bin 22 is embedded on the side of the top surface of the drawing vehicle 1 away from the ground-contact dust collection frame 3. The coating bin 23 is located on the side of the glass bead bin 22 away from the marking mixing bin 21. The marking mixing bin 21, the glass bead bin 22, and the coating bin 23 are internally connected to a feeding pipe 24. The two ends of the feeding pipe 24 are respectively connected to an air outlet duct 8 and a spray box 4.

[0057] The spray box 4 includes a marking spray can 41, a glass bead spray can 42, and a coating spray can 43. The marking spray can 41 is fixed to the middle of the side of the drawing vehicle 1. The spray nozzle of the marking spray can 41 is parallel to the center of the ground-contact dust collection frame 3. The glass bead spray can 42 is connected to the side of the marking spray can 41 away from the ground-contact dust collection frame 3. The glass bead spray can 42 is also connected to the side of the glass bead spray can 42 opposite to the marking spray can 41.

[0058] The material bins 2 are equipped with three containers, which can store three types of road marking materials. The materials are transported into the spray box 4 by the filtered air provided by the exhaust component 5 to complete the multi-layer spraying of the road marking materials. The marking mixing bin 21 is equipped with a heating chamber 211, which can directly mix and heat the marking materials to be sprayed, improving the convenience of use. The heating chamber 211 is equipped with a heat insulation chamber 212 on the outside, which can improve the safety of the equipment during operation.

[0059] Example 2

[0060] The automatic road marking drawing device provided in Example 1 is further optimized, specifically, as follows: Figures 1-12The ground-contact vacuum cleaner frame 3 includes an I-shaped frame 31. Rollers 32 are rotatably connected to the inner sides of both ends of the I-shaped frame 31. A vacuum port 33 is opened at the center of the bottom surface of the I-shaped frame 31. A corrugated vacuum pipe 34 is connected to the top of the vacuum port 33. The far end of the corrugated vacuum pipe 34 is connected to the air inlet of the exhaust assembly 5. Symmetrical telescopic frames 35 are provided on both sides of the top of the I-shaped frame 31. A rebound rod 36 is limited and connected to the inner side of the output end of the telescopic frame 35. A buffer spring 37 is provided on the top surface of the rebound rod 36. The rebound rod 36 slides elastically on the inner side of the output end of the rebound rod 36 through the buffer spring 37. The top end of the rebound rod 36 is fixed to the outer wall of the drawing vehicle 1.

[0061] The use of a ground-contact vacuum cleaner frame 3 allows for a smaller gap between the air intake of the exhaust assembly 5 and the ground, enabling it to pick up dust from deeper depths and completely remove dust from crevices in the ground. At the same time, the smaller gap between the air intake and the ground increases the suction power at the suction port 33, enhancing the dust adsorption effect. The top surface of the I-shaped frame 31 is connected by a telescopic frame 35 and a rebound rod 36, which allows for free control of the height of the ground-contact vacuum cleaner frame 3 from the ground. During movement, the rebound rod 36 keeps the I-shaped frame 31 in contact with the ground.

[0062] Example 3

[0063] The automatic road marking drawing device provided in Embodiment 1 or 2 is further optimized, specifically, as follows: Figures 1-12 As shown, the exhaust assembly 5 includes an exhaust box 51, which is fixed inside the drawing vehicle 1. An exhaust impeller 52 is provided in the middle of the exhaust box 51. One end of the exhaust impeller 52 is connected to an exhaust motor 53. The air inlet of the exhaust box 51 is connected to the corrugated dust suction pipe 34. The air outlet of the exhaust box 51 is provided with a wind power storage chamber 54. A driven blade 55 is rotatably connected inside the wind power storage chamber 54. A transmission gear 56 is connected to the end of the driven blade 55 away from the wind power storage chamber 54. A transmission toothed belt 57 is sleeved on the outside of the transmission gear 56. The far end of the transmission toothed belt 57 is connected to the air filter box 6.

[0064] The exhaust assembly 5 provides strong suction for the ground-contact vacuum cleaner 3, ensuring the suction effect of the vacuum port 33 on dust. In addition, the exhaust outlet of the exhaust assembly 5 adopts the design of wind power storage chamber 54, which can recover the power of the exhaust assembly 5 through the exhaust energy storage method and conduct it to the air filter box 6, thereby improving the power utilization rate.

[0065] Example 4

[0066] The automatic road marking drawing device provided in Embodiment 1, 2, or 3 is further optimized, specifically, as follows: Figures 1-12As shown, the air filter box 6 has a pressurized water box 61 at the bottom, and a water inlet 62 is opened on one side of the top of the pressurized water box 61. The water inlet 62 is connected to the inside of the air filter box 6. A spiral pressurizing plate 63 is rotatably connected to the inside of the pressurized water box 61. Half of the length of the pressurized water box 61 near the water inlet 62 is circular, and half of the length of the pressurized water box 61 away from the water inlet 62 is rectangular. One end of the spiral pressurizing plate 63 extends to the position of the circular pressurized water box 61 and is rotatably connected to the pressurized water box 61 in a sealed state. The end of the spiral pressurizing plate 63 located outside the pressurized water box 61 is connected to the transmission gear 56 and the transmission belt 57 for transmission. The end of the pressurized water box 61 away from the spiral pressurizing plate 63 is connected to a circulating water pipe 64. The other end of the circulating water pipe 64 is connected to a spray water box 65, which is located on the top surface of the inside of the air filter box 6.

[0067] The dust filter assembly 7 includes two symmetrical sets of filter layers 71. The ends of the filter layers 71 are fixed to the inner wall of the air filter box 6. The water spray box 65 is located between the filter layers 71. Symmetrical fixing rods 72 are provided below the water spray box 65. Equally spaced dust scrapers 73 are connected between the fixing rods 72. The two ends of the dust scrapers 73 slide against the surface of the filter layers 71. The bottom of the fixing rods 72 is connected to a lifting and rebounding rod 74. The lifting and rebounding rod 74 includes a rebounding and storing rod 741. 741 is fixed to the bottom surface of the air filter box 6. A spring-loaded telescopic rod 742 is slidably connected to the inner top of the spring-loaded storage rod 741. A waterproof sleeve 743 is fitted onto the outer top of the spring-loaded telescopic rod 742. The top end of the spring-loaded telescopic rod 742 is fixedly connected to the bottom end of the fixed rod 72. The waterproof sleeve 743 is fitted onto the outer top of the spring-loaded storage rod 741. A spring 744 is provided on the inner side of the spring-loaded storage rod 741. The bottom of the spring-loaded telescopic rod 742 slides elastically on the inner side of the spring-loaded storage rod 741 through the spring 744.

[0068] The air filter box 6 can be powered by the exhaust component 5 to drive the spiral pressure plate 63 to deliver water to the upper part of the air filter box 6, which flushes the inside of the dust filter component 7, improving the dust filter component 7's ability to adsorb and filter dust in the air. In addition, the flushing of water can provide pressure to drive the dust scraper 73 inside the dust filter component 7 to rise and fall, realizing the self-cleaning function of the dust filter component 7.

[0069] Example 5

[0070] The automatic road marking drawing device provided in Examples 1-4 has been further optimized, specifically, as follows: Figures 1-12As shown, the air outlet duct 8 includes a circulating air duct 81, which is connected to the air filter box 6 and located on one side of the air filter box 6. The side of the air outlet duct 8 facing away from the air filter box 6 is connected to the feeding pipe 24. A first sealing plate 82 is fitted and slidably attached to the side of the air outlet duct 8 connected to the feeding pipe 24. A first push rod 83 is connected to the top of the first sealing plate 82 and is fixed inside the drawing carriage 1. An exhaust port 84 is provided in the air filter box 6 near the air outlet duct 8. A second sealing plate 85 is slidably attached to the inside of the exhaust port 84 and is fitted and slidably attached to the inside of the exhaust port 84. A second push rod 86 is connected to one side of the second sealing plate 85 and is fixed inside the drawing carriage 1. In the driving state, the first push rod 83 drives the first sealing plate 82 to rise, and the second push rod 86 drives the second sealing plate 85 to close. The first push rod 83 drives the first sealing plate 82 to fall, and the second push rod 86 drives the second sealing plate 85 to open.

[0071] The air outlet duct 8 can discharge or recycle the purified and filtered air to the outside. Through the cooperation of the first sealing plate 82 and the second sealing plate 85, the air outlet duct 8 can be sealed and ventilated. In the sealed state, the purified air can be stored inside the air filter box 6, forming a high-pressure environment to be transported into the feed pipe 24, realizing the recycling of air and driving the spray box 4 to spray paint to the outside.

[0072] Example 6

[0073] The automatic road marking drawing device provided in Examples 1-5 has been further optimized, specifically, as follows: Figures 1-12 As shown, the stirring assembly 9 includes a sealing cover 91, a stirring motor 92 connected to the center of the top surface of the sealing cover 91, a stirring shaft 93 connected to the output end of the stirring motor 92, the stirring shaft 93 passing through the center of the marking mixing tank 21, and stirring rods 94 arranged in a distributed manner connected to the outer surface of the stirring shaft 93. A spiral scraper 95 is connected to the far end of the stirring rod 94, and the spiral scraper 95 slides against the inner wall of the marking mixing tank 21.

[0074] A stirring component 9 is added to the inside of the marking mixing bucket 21. After the marking spraying material is added to the marking mixing bucket 21, the material is stirred and mixed by heating, which improves the uniformity of the material during spraying. At the same time, a spiral scraper 95 is connected to the end of the stirring rod 94. While scraping the material on the inner wall of the marking mixing bucket 21, it can also improve the mixing efficiency of the material inside the marking mixing bucket 21 by using the downward pressure function.

[0075] Please see Figures 1-12The present invention provides a method for using an automatic road marking drawing device, the method of using the automatic road marking drawing device comprising the following steps:

[0076] Step 1: Pour epoxy resin, curing agent, and cement into the marking mixing bucket 21 according to the ratio, pour glass beads into the glass bead material bucket 22, and pour the coating material into the coating material bucket 23.

[0077] Step 2: The sealing cap 91 is placed on the upper part of the marking mixing tank 21. The spiral heating tube 213 inside the marking mixing tank 21 is activated to heat the material inside the marking mixing tank 21. Then, the stirring motor 92 is activated to drive the stirring shaft 93 to rotate the stirring rod 94 and the spiral scraper 95 to stir and mix the material inside the tank.

[0078] Step 3: Start the exhaust motor 53 to drive the exhaust impeller 52 to rotate. The dust suction port 33 on the bottom of the I-beam frame 31 adsorbs the dust on the ground. The dust-containing air is transported through the exhaust box 51 to the air filter box 6. After being adsorbed and filtered by the dust filter assembly 7, the clean air is discharged through the exhaust port 84. Start the telescopic frame 35 to push the I-beam frame 31 down. The roller 32 contacts the ground, allowing the rebound rod 36 to retract halfway inside the telescopic frame 35.

[0079] Step 4: Move the drawing vehicle 1;

[0080] Step 5: When the drawing vehicle 1 moves to the position where the road markings need to be sprayed, the first push rod 83 and the second push rod 86 are activated at the same time. The exhaust port 84 will close, and the air outlet 8 will be under high pressure. The high-pressure air is delivered to the bottom of the marking mixing tank 21, the glass bead tank 22, and the film coating tank 23 through the feeding pipe 24, which drives the material to move into the spray box 4. The spraying material is sprayed out through the atomizing nozzles of the marking spray can 41, the glass bead spray can 42, and the film coating spray can 43 under the action of the high-pressure air, and sprayed on the cleaned inner side of the road surface.

[0081] Step 6: When drawing the interval markings, repeatedly switch the first push rod 83 and the second push rod 86 to keep the spray box 4 in the on / off state.

[0082] Work steps:

[0083] 1. The stirring motor 92 starts and drives the stirring shaft 93 to rotate. The stirring shaft 93 drives the stirring rod 94 to rotate, which mixes the marking material inside the marking mixing bucket 21. During the rotation of the stirring rod 94, the spiral scraper 95 rotates and scrapes the material on the inner wall of the marking mixing bucket 21 downward. At the same time, during the stirring process, the material at the edge can be conveyed downward, which improves the stirring efficiency.

[0084] 2. Start the telescopic frame 35 to push the rebound rod 36 down, so that the I-shaped frame 31 and roller 32 connected to the bottom of the rebound rod 36 contact the ground. Then, as the rebound rod 36 retracts to half the distance inside the telescopic frame 35, the drive of the telescopic frame 35 can be stopped, so that the I-shaped frame 31 has a buffer rebound distance with the ground, and always keeps the I-shaped frame 31 in contact with the ground.

[0085] It should be noted that the telescopic frame 35 consists of two sets of telescopic push rods, which are electrically powered. When the push rods are fully retracted, the I-shaped frame 31 is suspended in the air. When the drawing vehicle 1 moves, the I-shaped frame 31 will not contact the ground. However, after the push rods are extended, the I-shaped frame 31 will contact the ground. After the push rods are extended a certain distance, as the rebound rod 36 retracts, the I-shaped frame 31 will have a certain pressure to adhere to the ground.

[0086] The corrugated suction pipe 34 is a flexible hose. When the I-beam 31 extends or retracts, the corrugated suction pipe 34 will retract accordingly to maintain airflow.

[0087] The exhaust motor 53 drives the exhaust impeller 52 to rotate inside the exhaust box 51, absorbing the air inside the dust suction port 33. The air inside the dust suction port 33 is absorbed and then transported to the wind power storage chamber 54 through the air outlet of the exhaust box 51, driving the driven blades 55 to rotate. After that, the air flows to the inside of the air filter box 6. The rotation of the exhaust impeller 52 drives the transmission gear 56 at one end to rotate the transmission belt 57. The transmission belt 57 drives the spiral pressure booster plate 63 to rotate. During the rotation of the spiral pressure booster plate 63, water is absorbed from the water inlet 62 and transported to one side of the pressure booster water box 61. After passing through the pressure booster water source, it enters the circulation water pipe 64 and is transported to the inside of the pressure booster water box 61. It is then sprayed out through the water spray nozzle on the bottom surface of the pressure booster water box 61, and the water spray pressure is used to apply pressure to the dust scraper 73.

[0088] The dust scraper 73 is washed by the water flow, which puts pressure on the spring 744 inside the lifting and rebounding rod 74. Then, as the spring 744 rebounds back and forth, the rebound telescopic rod 742 slides back and forth inside the rebound storage rod 741. At the same time, the fixing rod 72 drives the dust scraper 73 to slide on the surface of the filter layer 71, scraping off the dust on the surface of the filter layer 71 and using the water source to wash it down.

[0089] The air delivered by the exhaust box 51 drives the driven blades 55 to rotate and enter the air filter box 6. After the air passes through the filter layer 71 inside the air filter box 6 and is adsorbed and filtered by the water flow, the clean air is delivered to the other side of the dust filter assembly 7 and discharged through the exhaust port 84.

[0090] When the painting vehicle 1 moves to spray paint, the first push rod 83 and the second push rod 86 are activated, which drives the first sealing plate 82 and the second sealing plate 85 to move simultaneously, creating high pressure inside the air outlet duct 8. At the same time, air will enter the inside of the marking mixing tank 21, the glass bead tank 22, and the film coating tank 23 through the feeding pipe 24, and drive the material into the inside of the marking spray can 41, the glass bead spray can 42, and the film coating spray can 43 inside the spray box 4 to spray the road markings.

[0091] It should be noted that the air outlet 8 is connected to the feeding pipe 24, and the feeding pipe 24 connected to the marking mixing tank 21 is located at the bottom. Therefore, during spraying, the marking material will be sprayed out first. As the drawing vehicle 1 moves to the marking material spraying position, the glass beads and coating material will be sprayed on the upper part of the marking material.

[0092] The usage process of the automatic road marking drawing device provided by this invention is as follows:

[0093] The road marking material is poured into the inside of the material bucket 2. After being heated and mixed evenly, the ground suction frame 3 adsorbs the marking position on the ground. At the same time, the air drawn by the ground suction frame 3 is filtered by the air filter box 6 and sent to the air outlet 8. The filtered air can be discharged through the exhaust port 84 or enter the spray box 4 and the inside of the material bucket 2 through the circulation air duct 81 to spray the material and form the road marking.

[0094] It should be noted that when the filtered air is discharged through the exhaust port 84, it will not drive the spray box 4 to work. When the exhaust port 84 is closed and the circulation duct 81 is opened, a closed space will be formed, and high-pressure air will be used to transport the spray box 4 to spray out the material.

[0095] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0096] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. An automatic road marking drawing device, characterized in that, The system includes a drawing cart (1), a material bucket (2) located in the center of the top surface of the drawing cart (1), a ground-contact vacuum frame (3) connected to one side of the front end of the drawing cart (1), the ground-contact vacuum frame (3) sliding elastically under the drawing cart (1), a spray box (4) fixed in the center of the side of the drawing cart (1) connected to the ground-contact vacuum frame (3), the spray nozzle of the spray box (4) located at the center of the ground-contact vacuum frame (3), a ventilation assembly (5) provided inside the end of the drawing cart (1) connected to the ground-contact vacuum frame (3), the air intake of the ventilation assembly (5) communicating with the ground-contact vacuum frame (3), and the air outlet of the ventilation assembly (5). An air filter box (6) is provided. The exhaust assembly (5) is connected to the upper part of the inner side of the air filter box (6). In the driving state, the exhaust assembly (5) is driven by the air filter box (6). A dust filter assembly (7) is provided on the upper side of the inner side of the air filter box (6). An air outlet duct (8) is connected to the side of the air filter box (6) away from the exhaust assembly (5). The side of the air outlet duct (8) away from the air filter box (6) is connected to the material bucket (2) and the spray box (4). The side of the air filter box (6) near the air outlet duct (8) is connected to the outside of the drawing vehicle (1). A stirring assembly (9) is provided inside the material bucket (2). The material bucket (2) includes a marking mixing bucket (21), a glass bead bucket (22), and a coating bucket (23). The marking mixing bucket (21) is embedded inside the center of the top surface of the drawing vehicle (1). The glass bead bucket (22) is embedded on the side of the top surface of the drawing vehicle (1) away from the ground-contact dust collection frame (3). The coating bucket (23) is located on the side of the glass bead bucket (22) away from the marking mixing bucket (21). The marking mixing bucket (21), the glass bead bucket (22), and the coating bucket (23) are connected to a feeding pipe (24). The two ends of the feeding pipe (24) are connected to the air outlet (8) and the spray box (4), respectively. The ground-contact vacuum cleaner frame (3) includes an I-shaped frame (31), with rollers (32) rotatably connected to the inner sides of both ends of the I-shaped frame (31). A vacuum port (33) is opened at the center of the bottom surface of the I-shaped frame (31). A corrugated vacuum pipe (34) is connected to the top of the vacuum port (33). The far end of the corrugated vacuum pipe (34) is connected to the air inlet of the exhaust assembly (5). Symmetrical telescopic frames (35) are provided on both sides of the top of the I-shaped frame (31). A rebound rod (36) is limited and connected to the inner side of the output end of the telescopic frame (35). A buffer spring (37) is provided on the top surface of the rebound rod (36). The rebound rod (36) slides elastically on the inner side of the output end of the rebound rod (36) through the buffer spring (37). The top end of the rebound rod (36) is fixed to the outer wall of the drawing vehicle (1). The spray box (4) includes a marking spray can (41), a glass bead spray can (42), and a coating spray can (43). The marking spray can (41) is fixed to the middle of the side of the drawing vehicle (1). The spray nozzle of the marking spray can (41) is parallel to the center of the ground-contact dust collection frame (3). The glass bead spray can (42) is connected to the side of the marking spray can (41) away from the ground-contact dust collection frame (3). The coating spray can (43) is connected to the side of the glass bead spray can (42) away from the marking spray can (41). The exhaust assembly (5) includes an exhaust box (51), which is fixed inside the drawing vehicle (1). An exhaust impeller (52) is provided in the middle of the exhaust box (51). An exhaust motor (53) is connected to one end of the exhaust impeller (52). The air inlet of the exhaust box (51) is connected to the corrugated dust suction pipe (34). A wind power storage chamber (54) is provided at the air outlet of the exhaust box (51). A driven blade (55) is rotatably connected inside the wind power storage chamber (54). A transmission gear (56) is connected to the end of the driven blade (55) away from the wind power storage chamber (54). A transmission toothed belt (57) is sleeved on the outside of the transmission gear (56). The far end of the transmission toothed belt (57) is connected to the air filter box (6). The stirring assembly (9) includes a sealing cover (91), a stirring motor (92) is connected to the center of the top surface of the sealing cover (91), a stirring shaft (93) is connected to the output end of the stirring motor (92), the stirring shaft (93) passes through the center of the marking mixing barrel (21), a stirring rod (94) is connected to the outer surface of the stirring shaft (93), a spiral scraper (95) is connected to the far end of the stirring rod (94), and the spiral scraper (95) slides against the inner wall of the marking mixing barrel (21).

2. The automatic road marking drawing device according to claim 1, characterized in that, The air filter box (6) is provided with a pressurized water box (61) at the bottom. The pressurized water box (61) has an inlet (62) on one side of its top. The inlet (62) is connected to the inside of the air filter box (6). A spiral pressurizing plate (63) is rotatably connected to the inside of the pressurized water box (61). Half of the length of the pressurized water box (61) near the inlet (62) is circular, and half of the length of the pressurized water box (61) away from the inlet (62) is rectangular. One end of the spiral pressurizing plate (63) extends... The spiral booster plate (63) is rotatably connected to the circular booster water box (61) in a sealed state. The spiral booster plate (63) is connected to the booster water box (61) at one end via a transmission gear (56) and a transmission belt (57). The end of the booster water box (61) away from the spiral booster plate (63) is connected to a circulating water pipe (64). The other end of the circulating water pipe (64) is connected to a spray box (65). The spray box (65) is located on the top surface inside the air filter box (6).

3. The automatic road marking drawing device according to claim 2, characterized in that, The dust filter assembly (7) includes two symmetrical filter layers (71). The ends of the filter layers (71) are fixed to the inner wall of the air filter box (6). The water spray box (65) is located between the filter layers (71). Symmetrical fixing rods (72) are provided below the water spray box (65). Equally spaced dust scrapers (73) are connected between the fixing rods (72). The two ends of the dust scrapers (73) slide against the surface of the filter layers (71). The bottom end of the fixing rods (72) is connected to a lifting and rebounding rod (74). The lifting and rebounding rod (74) includes a rebounding and storing rod (741). The rod (741) is fixed to the bottom surface of the air filter box (6). The top inner side of the spring-loaded storage rod (741) is slidably connected to the spring-loaded telescopic rod (742). The top outer side of the spring-loaded telescopic rod (742) is fitted with a waterproof sleeve (743). The top end of the spring-loaded telescopic rod (742) is fixedly connected to the bottom end of the fixed rod (72). The waterproof sleeve (743) is fitted on the top outer side of the spring-loaded storage rod (741). The inside of the spring-loaded storage rod (741) is provided with a spring (744). The bottom of the spring-loaded telescopic rod (742) slides elastically inside the spring-loaded storage rod (741) through the spring (744).

4. The automatic road marking drawing device according to claim 1, characterized in that, The air outlet duct (8) includes a circulating air duct (81), which is connected to the air filter box (6) and located on one side of the air filter box (6). The side of the air outlet duct (8) facing away from the air filter box (6) is connected to the feeding pipe (24). A first sealing plate (82) is fitted and slidably sealed on the side of the air outlet duct (8) connected to the feeding pipe (24). A first push rod (83) is connected to the top of the first sealing plate (82). The first push rod (83) is fixed inside the drawing vehicle (1). An exhaust port (84) is provided in the air filter box (6) near the air outlet duct (8). The exhaust vent (84) has a second sealing plate (85) that slides within it. The second sealing plate (85) slides and seals against the inside of the exhaust vent (84). A second push rod (86) is connected to one side of the second sealing plate (85). The second push rod (86) is fixed inside the drawing vehicle (1). In the driving state, the first push rod (83) drives the first sealing plate (82) to rise, and the second push rod (86) drives the second sealing plate (85) to close. The first push rod (83) drives the first sealing plate (82) to fall, and the second push rod (86) drives the second sealing plate (85) to open.

5. A method of using an automatic road marking drawing device according to any one of claims 1-4, characterized in that, The method of using the automatic road marking drawing device includes the following steps: Step 1: Pour epoxy resin, curing agent, and cement into the marking mixing bucket (21) according to the proportion, pour glass beads into the glass bead material bucket (22) and pour the coating material into the coating material bucket (23). Step 2: The sealing cap (91) is placed on the top of the marking mixing bucket (21), and the spiral heating tube (213) inside the marking mixing bucket (21) is started to heat the material inside the marking mixing bucket (21). Then the stirring motor (92) is started to drive the stirring shaft (93) to rotate the stirring rod (94) and the spiral scraper (95) to stir and mix the material inside the bucket. Step 3: Start the exhaust motor (53) to drive the exhaust impeller (52) to rotate. The dust suction port (33) on the bottom of the I-shaped frame (31) adsorbs the dust on the ground. The air containing dust is transported to the air filter box (6) through the exhaust box (51). After being adsorbed and filtered by the dust filter assembly (7), the clean air is discharged through the exhaust port (84). Start the telescopic frame (35) to push the I-shaped frame (31) down. The roller (32) contacts the ground, allowing the rebound rod (36) to retract halfway inside the telescopic frame (35). Step 4: Move the drawing vehicle (1); Step 5: When the drawing vehicle (1) moves to the position where the road markings need to be sprayed, the first push rod (83) and the second push rod (86) are activated at the same time. The exhaust port (84) will close, and the air outlet (8) will be under high pressure. The high-pressure air is conveyed through the feeding pipe (24) to the bottom of the marking mixing tank (21), the glass bead tank (22), and the film coating tank (23), which drives the material to move into the spray box (4). The spraying material is sprayed out through the atomizing nozzles of the marking spray can (41), the glass bead spray can (42), and the film coating spray can (43) under the drive of the high-pressure air, and sprayed on the cleaned inner side of the road surface. Step 6: When drawing the interval markings, repeatedly switch the first push rod (83) and the second push rod (86) to put the spray box (4) in the on / off state.

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