Marking and scribing device for roads and bridges

Abstract

The invention belongs to the technical field of road construction, and particularly discloses a road and bridge marking and scribing device which comprises a moving vehicle, a gas box is fixedly installed above the moving vehicle, a glass bead storage box is fixedly installed on the outer wall of one side of the gas box, and a battery is installed below the glass bead storage box. A heating shell is fixedly installed above the side, away from the gas box, of the moving trolley, a heating tank is fixedly installed above the heating shell, an inner tank is fixedly installed in the heating tank, a through hole for clamping a gas combustion pipe is formed in one side of the interior of the heating shell, and a sowing device is fixedly installed on one side of the outer wall of the gas box. According to the hot-melting type marking machine, the heating function, the heat preservation function, the soaking function, the discharging function and the glass bead sowing function are integrated, centralized control is achieved through the controller, movement is flexible, the energy utilization rate is high, the marking construction quality and efficiency can be effectively improved, and the hot-melting type marking machine is suitable for hot-melting type marking construction of various roads and bridges.

Description

Technical Field

[0001] This invention belongs to the field of road construction technology, and specifically discloses a marking and marking device for roads and bridges. Background Technology

[0002] Hot-melt road marking paint has become the mainstream material for road marking construction due to its advantages such as rapid drying, wear resistance, durability, and excellent reflectivity. During construction, the granular paint needs to be melted in a heating device and kept at a suitable working temperature (usually around 180-200℃) before being applied using a marking machine. Currently, many small and medium-sized hot-melt marking machines or containers in use generally employ a portable liquefied petroleum gas (LPG) cylinder combined with an open flame burner to directly heat the bottom of the metal cylinder. While this traditional heating method is simple and low-cost, it has revealed a series of interconnected and serious technical defects in practical applications, directly affecting construction quality, efficiency, and safety.

[0003] Localized overheating and coking / scaling of the coating at the bottom of the tank are prominent issues. Because the open flame directly and continuously burns the central area at the bottom of the tank, the temperature in this area easily exceeds the thermal decomposition threshold of the coating (approximately 220-230℃). The coating at the bottom of the tank is subjected to prolonged overheating, causing the resin, additives, and other organic components to undergo thermal aging, coking, or even carbonization, forming hard, crust-like clumps. These coked materials not only clog subsequent discharge ports and filters but also mix into the molten coating as impurities, leading to quality defects such as particle-like markings, uneven color, and premature peeling. In severe cases, manual cleaning is required after shutdown, significantly impacting the continuity of construction. The heat transfer mechanism of open flame heating is mainly bottom conduction, while heat transfer to the upper and central areas relies heavily on the slow heat conduction of the material itself and limited convection. This inevitably creates a huge vertical temperature gradient within the tank: the bottom is overheated while the upper and middle parts are underheated. To bring the coating to its melting point, operators have to further increase the heat at the bottom or extend the heating time, which in turn exacerbates the risk of charring at the bottom, creating a vicious cycle. Simultaneously, a large amount of heat is lost through the tank walls and top, resulting in low energy efficiency and high fuel consumption. Traditional paint canisters are typically single-layer metal structures, resulting in significant heat loss from the canister walls during outdoor construction (especially in winter or at night). Once heating stops or the heat is slightly reduced, the paint temperature drops rapidly; reheating then triggers a new round of localized overheating and charring. This drastic temperature fluctuation leads to unstable paint viscosity, directly affecting the uniformity of the marking thickness, the embedding rate of glass beads, and adhesion to the road surface, ultimately impacting the lifespan of the markings and their nighttime reflectivity. In summary, the fundamental problem with current gas-fired direct-heating hot-melt marking machines lies in the irreconcilable contradiction between the primitive and crude heat source method and the uniform, precise, and stable thermal management requirements of the paint. While existing technologies have made some improvements through stirring and redesigning the canister shape, they have not fundamentally innovated the heat transfer path and insulation structure, failing to simultaneously address the three core pain points of charring, unevenness, and poor insulation. Therefore, a completely new heating and insulation structure design is urgently needed to achieve uniform, efficient, and controllable heat transfer and maintenance from the root, meeting the stringent requirements of high-quality road marking construction. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the background art, and to propose a marking and marking device for roads and bridges, including a mobile vehicle. A gas box is fixedly installed on the top of the mobile vehicle. A glass bead storage box is fixedly installed on one outer wall of the gas box. A heating shell is fixedly installed on the top of the side of the mobile vehicle away from the gas box. A heating tank is fixedly installed on the top of the heating shell. An inner tank is fixedly installed inside the heating tank. A through hole for gas combustion pipe clamping is opened on one side of the inside of the heating shell. A spreader is fixedly installed on one side of the outer wall of the gas box. The spreader and the glass bead storage box are connected by a spreading pipe. A paint roller hopper is provided on one side of the mobile vehicle near the front end of the spreader. A discharge hopper is connected to the inside of the heating tank and the inner tank near the top of the paint roller hopper. A spiral tube is wrapped around the outside of the inner tank. A circulating heat preservation mechanism is provided above the spiral tube. An anti-coking and heat equalization mechanism is provided inside the inner tank.

[0005] In the above technical solution, the circulating heat preservation mechanism further includes a circulating suction fan, a suction pipe is connected to one side of the circulating suction fan, an electric control valve is installed inside the suction pipe and close to the circulating suction fan, one end of the suction pipe extends to the interlayer between the heating tank and the inner tank, and an air equalization pipe is connected to the end of the suction pipe away from the circulating suction fan.

[0006] In the above technical solution, a liquid storage ring pipe is fixedly installed above the inner wall of the heating tank. The upper end of the spiral tube is connected to the inside of the liquid storage ring pipe. A water inlet pipe is connected to one end of the inside of the liquid storage ring pipe. The water inlet pipe extends to the outside of the heating tank. The end of the spiral tube away from the water inlet pipe extends to the outside of the heating tank and is connected to a drain pipe. An air inlet pipe is connected to the end of the circulating suction fan away from the suction pipe. A heat-conducting plate is fixedly installed above the liquid storage ring pipe and near the air inlet pipe.

[0007] In the above technical solution, the anti-coking and heat equalization mechanism further includes a rotating shaft rotatably installed inside the inner tank, a bubble breaking mechanism is provided above the outside of the rotating shaft, a fitting is fixedly sleeved below the outside of the rotating shaft, and a scraping mechanism is staggered above and below the fitting.

[0008] In the above technical solution, the foam breaking mechanism further includes two sets of clamps respectively installed on the outside of the rotating shaft. The two sets of clamps are arranged symmetrically up and down. A connecting rod is fixedly installed on the outside of the clamp. A sliding rod is fixedly installed at both ends of the bottom of the connecting rod. A float rod is slidably fitted on the outside of the two sliding rods. Foam breaking teeth are installed at equal intervals along the horizontal direction at the bottom of the float rod. A curved ring frame is fixedly fitted on the upper part of the inner wall of the inner tank.

[0009] In the above technical solution, the scraping mechanism further includes an arc-shaped inclined plate fixedly installed on one side of the outer wall of the equipment. Multiple sets of dividing discs are installed on the outer surface of the arc-shaped inclined plate, and multiple sets of rectangular slots of different lengths are opened on the surface of the multiple sets of dividing discs.

[0010] In the above technical solution, a scraper is further fixedly installed on the outer surface of the arc-shaped inclined plate away from the dividing plate, and the outer surface of the scraper has multiple sets of filter holes to reduce resistance.

[0011] In the above technical solution, the upper end of the rotating shaft extends to the top of the heating tank, a motor is fixedly installed on the upper end of the rotating shaft, the motor is fixed above the heating tank by a mounting bracket, a hopper is connected to one side of the top of the heating tank, a controller is fixedly installed on the outer wall of the front end of the heating tank, handrails are fixedly installed on both sides of the outer wall of the glass bead storage box, and an air valve is connected to one side of the top of the heating tank.

[0012] In the above technical solution, a battery is installed below the glass bead storage box, a guide rod is provided on the outer side of the front end of the mobile vehicle, and the mobile vehicle is connected to a discharge blocker through a tension spring on the outer side, the discharge blocker controlling the discharge of material from the discharge bin.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes an anti-coking and heat-equalizing mechanism installed inside the inner tank. A rotating shaft drives a scraping mechanism and a bubble-breaking mechanism in continuous motion, constantly stirring, agitating, and scraping the coating inside the tank. This breaks down temperature stratification and localized deposition caused by traditional static heating. The staggered scraping mechanism effectively agitates the coating at the bottom and side walls of the tank, preventing prolonged stagnation and significantly reducing coking and agglomeration of resins and other components due to overheating. Simultaneously, the bubble-breaking mechanism breaks up air bubbles on the liquid surface, reducing localized temperature anomalies caused by foam accumulation. This ensures a uniform temperature distribution of the coating throughout the heating process, improving heat transfer efficiency.

[0014] 2. This invention employs a spiral tube to enclose the outer wall of the inner tank, combined with a circulating insulation mechanism, forming a closed-loop hot air and liquid heat exchange system. A circulating suction fan continuously draws in hot air from the heating tank's interlayer and distributes it evenly. Simultaneously, circulating water or other heat exchange media can be introduced through the spiral tube, achieving active insulation and auxiliary temperature regulation of the inner tank wall. This structure significantly reduces the impact of the external environment on the tank's internal temperature. Even during construction in low-temperature outdoor environments, the coating temperature can be maintained within a suitable working range, avoiding energy waste and coating performance degradation caused by repeated heating.

[0015] 3. This invention integrates heating, heat preservation, stirring, material discharge, and glass bead spreading functions into one device, achieving centralized control through a controller, simplifying the construction process and reducing reliance on skilled operators. The design of circulating heat preservation and uniform heating reduces excessive gas consumption, meeting the requirements of green construction. The overall structure is mounted on a mobile vehicle, making it highly mobile and suitable for marking construction on various roads and bridges, demonstrating strong practicality and promotional value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is a schematic diagram of the connection structure between the inner tank and the spiral tube of the present invention; Figure 4 This is a schematic diagram of the connection structure between the spiral tube and the liquid storage ring tube of the present invention; Figure 5 This is a schematic diagram of the connection structure of the scraping mechanism of the present invention inside the inner tank; Figure 6 This is a schematic diagram of the connection structure between the arc-shaped inclined plate and the dividing disk of the present invention; Figure 7 This invention relates to the connection structure between the arc-shaped inclined plate, the dividing disk, and the rotating shaft. Figure 8 This is a schematic diagram of the foam breaking mechanism of the present invention.

[0017] In the diagram: 1. Mobile cart; 2. Handrail; 3. Glass bead storage bin; 4. Gas tank; 5. Heating tank; 6. Motor; 7. Circulating suction fan; 8. Air valve; 9. Controller; 10. Discharge hopper; 11. Guide rod; 12. Spreader; 13. Paint roller hopper; 14. Battery; 15. Discharge sealer; 16. Discharge hopper; 17. Air inlet pipe; 18. Water inlet pipe; 19. Drainage pipe; 20. 21. Suction pipe; 22. Gas equalization pipe; 23. Heating shell; 24. Inner tank; 25. Liquid storage ring pipe; 26. Heat conducting plate; 27. Electrically controlled valve; 28. Spiral tube; 29. ​​Rotating shaft; 30. Scraper plate; 31. Curved ring frame; 32. Connecting rod; 33. Compression sleeve; 34. Dividing plate; 35. Rectangular partition; 37. Assembly set; 38. Sliding rod; 39. Float rod; 40. Defoaming teeth. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] like Figures 1-8 The illustrated road and bridge marking device includes a mobile vehicle 1. A gas box 4 is fixedly installed on top of the mobile vehicle 1. A glass bead storage box 3 is fixedly installed on one outer wall of the gas box 4. A battery 14 is installed below the glass bead storage box 3. A heating shell 22 is fixedly installed on the upper side of the mobile vehicle 1 away from the gas box 4. A heating tank 5 is fixedly installed on top of the heating shell 22. An inner tank 23 is fixedly installed inside the heating tank 5. A through hole for mounting a gas combustion pipe is opened on one side of the interior of the heating shell 22. A spreader 12 is fixedly installed on one side of the outer wall of the gas box 4. The spreader 12 is positioned between the glass bead storage box 3 and the gas box 4. The mobile vehicle 1 is connected by a spreading pipe. A guide rod 11 is set on the outer side of the front end of the mobile vehicle 1. A paint roller hopper 13 is set on one side of the mobile vehicle 1 and near the front end of the spreader 12. A feeding hopper 10 is installed inside the heating tank 5 and the inner tank 23 and above the paint roller hopper 13. The mobile vehicle 1 is connected to a feeding blocker 15 by a tension spring on the outside. The feeding blocker 15 controls the discharge of the feeding hopper 10. The inner tank 23 is wrapped with a spiral tube 27. A circulating heat preservation mechanism is set above the spiral tube 27. An anti-coking and heat equalization mechanism is set inside the inner tank 23. A feeding hopper 16 is installed on one side of the top of the heating tank 5. In this embodiment, granular hot-melt coating is fed into the inner tank 23 through the hopper 16 at the top of the heating tank 5. The glass bead storage box 3 stores reflective glass beads. The battery 14 powers the electronic control components. The operator adjusts the mobile vehicle 1 to the starting position of construction by using the handrail 2. During heating, the liquefied petroleum gas in the gas box 4 is transported to the through hole of the heating shell 22 through the external gas combustion pipe. After ignition, it heats the bottom and side wall of the heating tank 5. The heat is transferred to the inner tank 23 to raise the temperature of the coating. At the same time, the circulating heat preservation mechanism and the anti-coking heat equalization mechanism are activated to ensure temperature stability and uniform heating of the coating, respectively. After the coating is heated, the discharge sealing device 15 is manually opened. The coating flows into the coating roller hopper 13 through the discharge bin 10. The operator pushes the mobile vehicle 1, and the guide rod 11 guides the mobile vehicle 1 to move along the preset route. The coating roller hopper 13 evenly applies the coating to the road surface. At the same time, the spreader 12 is activated. The glass beads in the glass bead storage box 3 are transported to the spreader 12 through the spreader pipe and evenly spread on the surface of the unsolidified coating. In this process, the heating, heat preservation, heat equalization, discharge, and spreading of the paint can be concentrated in the mobile vehicle 1, simplifying the construction process. The circulating heat preservation mechanism and the anti-coking heat equalization mechanism work together to solve the problems of coking, unevenness, and lack of heat preservation in traditional equipment, ensuring the stability of paint performance and improving the flatness, adhesion, and reflectivity of the markings.

[0021] The circulating heat preservation mechanism includes a circulating suction fan 7, a suction pipe 20 connected to one side of the circulating suction fan 7, an electric control valve 26 installed inside the suction pipe 20 and close to the circulating suction fan 7, one end of the suction pipe 20 extending to the interlayer between the heating tank 5 and the inner tank 23, and a gas equalization pipe 21 connected to the end of the suction pipe 20 away from the circulating suction fan 7, a liquid storage ring pipe 24 fixedly installed above the inner wall of the heating tank 5, the upper end of the spiral pipe 27 connected to the inside of the liquid storage ring pipe 24, a water inlet pipe 18 connected to one end of the inside of the liquid storage ring pipe 24, the water inlet pipe 18 extending to the outside of the heating tank 5, the end of the spiral pipe 27 away from the water inlet pipe 18 extending to the outside of the heating tank 5 and the end connected to a drain pipe 19, an air inlet pipe 17 connected to the end of the circulating suction fan 7 away from the suction pipe 20, and a heat-conducting plate 25 fixedly installed above the liquid storage ring pipe 24 and close to the air inlet pipe 17; In this embodiment, after the circulating suction fan 7 is powered on, it generates suction, drawing hot air from the interlayer between the heating tank 5 and the inner tank 23 through the suction pipe 20, and then delivering it to the air inlet pipe 17. When the airflow discharged from the air inlet pipe 17 passes through the heat-conducting plate 25, the heat-conducting plate 25 transfers heat from the liquid storage ring pipe 24 to the internal liquid. Circulating water is injected into the liquid storage ring pipe 24 through the water inlet pipe 18. The liquid storage ring pipe 24 evenly distributes the heat exchange medium to the spiral tube 27. The heat exchange medium flows spirally downward along the spiral tube 27, and... The outer wall of the inner tank 23 undergoes heat exchange, absorbing heat from the inner tank 23 and then discharging it through the drain pipe 19, forming a liquid heat exchange cycle to help maintain the temperature stability of the inner tank 23. At the same time, the spiral structure of the spiral tube 27 increases the contact area with the outer wall of the inner tank 23, improving the uniformity of heat exchange. The liquid heat exchange cycle and the hot air cycle form a double insulation structure, reducing the radial heat loss of the inner tank 23. The liquid storage ring pipe 24 and the heat-conducting plate 25 enhance the heat exchange in the top area, achieving all-round insulation of the inner tank 23.

[0022] The design of the air distribution pipe 21 makes the hot air distribution in the interlayer more uniform and the heat utilization more efficient, avoiding local heat dispersion. The coordinated control of the electric control valve 26 and the circulating exhaust fan 7 realizes the automatic and precise adjustment of temperature.

[0023] The double insulation structure fully utilizes the heating temperature of the inner tank 23, avoiding frequent reheating that could cause the coating to char.

[0024] The anti-coking and homogenizing heating mechanism includes a rotating shaft 28 rotatably installed inside the inner tank 23. A bubble-breaking mechanism is installed above the outside of the rotating shaft 28. A fitting 37 is fixedly sleeved below the outside of the rotating shaft 28. A scraping mechanism is staggered vertically around the fitting 37. The bubble-breaking mechanism includes two sets of clamping sleeves 33 respectively installed above the outside of the rotating shaft 28. The two sets of clamping sleeves 33 are symmetrically arranged vertically. A connecting rod 32 is fixedly installed on the outside of the clamping sleeves 33. Sliding rods 38 are fixedly installed at both ends of the bottom of the connecting rod 32. 8. A float 39 is mounted on the outer side of the common sliding assembly. The bottom of the float 39 is equipped with foam breaking teeth 40 at equal intervals along the horizontal direction. A curved ring frame 31 is fixedly mounted on the upper part of the inner wall of the inner tank 23. The upper end of the rotating shaft 28 extends to the top of the heating tank 5. A motor 6 is fixedly mounted on the upper end of the rotating shaft 28. The motor 6 is fixed above the heating tank 5 by a mounting bracket. A controller 9 is fixedly mounted on the outer wall of the front end of the heating tank 5. Handrails 2 are fixedly mounted on both sides of the outer wall of the glass bead storage box 3. An air valve 8 is connected to one side of the top of the heating tank 5. In this embodiment, when the motor 6 drives the rotating shaft 28 to rotate, the scraping mechanism arranged vertically can stir the coating in the tank in all directions during the rotation process, breaking the vertical temperature gradient formed by traditional static heating, so that the coating at the bottom, middle and top are fully mixed, and the heat is quickly transferred through the convection of the coating to achieve uniform temperature distribution in the tank. The scraping mechanism rotates close to the inner wall and bottom of the inner tank 23 to scrape off the paint adhering to the wall surface, preventing the paint from stagnating in the high-temperature area for a long time and causing coking and clumping; at the same time, the stirring action reduces the contact time between the paint and the tank wall, reducing the risk of thermal aging. The bubble-breaking mechanism breaks up the bubbles in the heated paint inside the inner tank 23, reducing the risk of paint overflow due to bubbling caused by heating. The float 39 is slidably connected to the connecting rod 32 via the slide rod 38, and can slide up and down along the slide rod 38 according to the height of the paint liquid level in the inner tank 23, always keeping it in contact with the liquid surface. This ensures that the defoaming teeth 40 can contact the bubbles on the liquid surface, thereby reducing the risk of overflow from the top of the inner tank 23. Specifically, the rotating shaft 28 drives the sleeve 33 and the connecting rod 32 to rotate synchronously, and the slide rod 38 drives the float 39 to make a circular motion around the rotating shaft 28. The defoaming teeth 40 at the bottom of the float 39 insert into the bubbles on the liquid surface. The curved ring frame 31 punctures the bubbles; at the same time, the curved ring frame 31 limits the rotation of the float 39. The upper connecting rod 32 slides against the upper surface of the curved ring frame 31, and the lower connecting rod 32 slides against the curved surface of the curved ring frame 31. The curved ring frame 31 also restricts the rupture of bubbles on the inner wall, making up for the areas that the defoaming teeth 40 cannot handle, and ensuring that the defoaming teeth 40 are evenly distributed on the liquid surface. During the rotation, after the bubbles are broken, the liquid surface of the coating is flat, reducing the problem of poor heat transfer caused by bubble blockage, so that the heat in the liquid surface area can be quickly transferred downward, which helps to improve the overall temperature uniformity inside the tank.

[0025] The scraping mechanism includes an arc-shaped inclined plate 30 fixedly installed on one side of the outer wall of the assembly 37. Multiple sets of dividing discs 34 are installed on the outer surface of the arc-shaped inclined plate 30, and multiple sets of rectangular slots 35 of different lengths are opened on the surface of the multiple sets of dividing discs 34. A scraping disc 29 is fixedly installed on the outer surface of the arc-shaped inclined plate 30 away from the dividing discs 34. Multiple sets of filter holes for reducing resistance are opened on the outer surface of the scraping disc 29. In this embodiment, the rotating shaft 28 drives the assembly 37 and the arc-shaped inclined plate 30 to rotate. The arc-shaped structure of the arc-shaped inclined plate 30 generates axial thrust during rotation, pushing the bottom coating upwards. At the same time, the top coating flows downwards under the action of gravity, forming vertical convection. Multiple sets of dividing discs 34 rotate with the arc-shaped inclined plate 30, dividing the coating into multiple streams. Rectangular grooves 35 of different lengths create velocity differences in the streams, enhancing the turbulence of the coating and improving the uniformity of mixing. The edge of the arc-shaped inclined plate 30 maintains a small gap with the inner wall and bottom of the inner tank 23, scraping off the thin layer of coating adhering to the wall during rotation, preventing this part of the coating from being heated and charred for a long time. At the same time, the arc-shaped structure reduces the stirring resistance and reduces the energy consumption of the motor 6. The scraper disc 29 is made of elastic and wear-resistant material. Its outer edge fits tightly against the inner wall and bottom of the inner tank 23. When it rotates with the arc-shaped inclined plate 30, it can accurately scrape off the paint adhering to the wall surface, including tiny coking deposits. The filter holes on the surface of the scraper disc 29 allow some paint to pass through during the scraping process, reducing the impact resistance of the paint on the scraper disc 29 and reducing the load on the motor 6. At the same time, it avoids excessive paint splashing during the scraping process. The paint stream through the filter holes and the stream divided by the dividing plate 34 form cross-mixing to achieve secondary stirring, further improving the uniformity of the paint and the heat transfer efficiency. The design of the dividing disc 34 and the rectangular partition 35 improves the uniformity of coating mixing. Compared with the traditional flat plate mixing structure, it can achieve uniform temperature inside the tank in a shorter time. In addition, the shape of the arc-shaped inclined plate 30 can reduce resistance during rotation.

[0026] The power supply for this device is provided by battery 14. The controller 9 integrates control functions such as temperature, motor 6, and electric valve 26 switch. The gas valve 8 on the top of the heating tank 5 can release excess gas generated in the tank due to heating, improving safety during the marking process.

[0027] Working principle: Before construction, granular hot-melt coating is fed into the inner tank 23 through the hopper 16. Gas supplied by the gas box 4 is heated by an open flame through the combustion pipe inside the heating shell 22, and the heat is directly applied to the bottom and side walls of the heating tank 5. The glass bead storage box 3 pre-stores the reflective glass beads required for construction. It is connected to the spreader 12 fixedly installed on one side of the outer wall of the gas box 4 through a spreading pipe, preparing for subsequent glass bead spreading. The liquefied petroleum gas stored in the gas box 4 is sent to the through hole opened on one side of the heating shell 22 through the external gas combustion pipe clamp device. After ignition, an open flame is formed, which directly heats the bottom of the heating tank 5. The heat is transferred to the inner tank 23 through the wall of the heating tank 5, initially achieving the heating of the coating inside the tank. During the heating process, the gas valve 8 installed on one side of the top of the heating tank 5 can be opened in time according to the gas pressure inside the tank to release excess gas and avoid excessive gas pressure inside the tank affecting construction safety. Then, the circulating suction fan 7 is started, and hot air is drawn from the interlayer between the heating tank 5 and the inner tank 23 through the suction pipe 20 installed on one side. The end of the suction pipe 20 away from the circulating suction fan 7 is connected to the air distribution pipe 21 installed to evenly disperse the drawn hot air and blow it back into the interlayer space, forming a closed hot air circulation to ensure uniform temperature distribution in the interlayer and reduce heat loss. At the same time, heat exchange medium such as circulating water is injected into the spiral tube 27 wrapped around the outside of the inner tank 23 through the water inlet pipe 18. The water inlet pipe 18 is connected to the liquid storage ring pipe 24 fixedly installed above the inner wall of the heating tank 5. The heat exchange medium is evenly distributed into the spiral tube 27 through the liquid storage ring pipe 24 and flows along the spiral tube 27. The heat exchange medium moves and exchanges heat with the wall of the inner tank 23, thereby achieving auxiliary insulation and temperature regulation of the inner tank 23. Finally, the heat exchange medium extends from the other end of the spiral tube 27 to the drain pipe 19 outside the heating tank 5 and is discharged, completing the heat exchange. The controller 9 can adjust the opening of the electric control valve 26 according to the preset temperature of the device or the feedback signal of the temperature sensor, control the amount of external air to be supplied, and thus accurately regulate the temperature of the hot air in the jacket. The heat-conducting plate 25 fixedly installed above the liquid storage ring pipe 24 and near the air inlet pipe 17 enhances the heat exchange efficiency between the airflow discharged from the air inlet pipe 17 and the liquid storage ring pipe 24, further improving the insulation effect and preventing the viscosity of the coating inside the tank from becoming unstable due to temperature fluctuations. Next, the motor 6, fixed above the heating tank 5 by a mounting bracket, is started. The motor 6 drives the rotating shaft 28 connected to its output end to rotate. The rotating shaft 28 drives the externally installed bubble-breaking mechanism and scraping mechanism to move synchronously. Specifically, two sets of symmetrically arranged clamping sleeves 33 installed on the outside of the rotating shaft 28 rotate with the rotating shaft 28. The connecting rod 32 fixedly installed on the outside of the clamping sleeve 33 drives the sliding rods 38 fixed at both ends of the bottom to rotate synchronously. The float 39, which is slidably mounted on the outside of the two sliding rods 38, always keeps in contact with the liquid surface under the action of the buoyancy of the coating. The foam-breaking teeth 40 installed at equal intervals at the bottom of the float 39 rotate with the float 39 to break the bubbles generated during the heating of the coating. The curved ring frame 31 fixedly mounted on the upper part of the inner wall of the inner tank 23 limits the movement trajectory of the float 39, ensuring that the foam-breaking teeth 40 evenly cover the liquid surface, avoiding the accumulation of bubbles that cause local temperature abnormalities, and preventing bubbles from forming. This affects the uniformity of coating melting. Simultaneously, the assembly 37, fixedly sleeved to the lower part of the rotating shaft 28, rotates with the shaft 28. The arc-shaped inclined plate 30, fixedly installed on one side of the outer wall of the assembly 37, rotates alternately up and down, thoroughly stirring and agitating the coating at the bottom and wall of the tank. Multiple sets of dividing discs 34, installed on the outer surface of the arc-shaped inclined plate 30, have multiple sets of rectangular grooves 35 of different lengths, which can divide the coating into multiple streams, enhancing the uniformity of stirring and breaking the temperature stratification caused by traditional static heating. A scraper disc 29, fixedly installed on the outer surface of the arc-shaped inclined plate 30 away from the dividing discs 34, has multiple sets of filter holes on its outer surface to reduce movement resistance. The scraper disc 29 rotates close to the inner wall and bottom of the inner tank 23, scraping off the coating adhering to the wall and bottom, preventing the coating from stagnating and heating for a long time, which would cause the resin and other organic components to coke and clump, thus solving the problem of coating coking and scaling at the bottom of the tank from the root. Finally, after the paint in the inner tank 23 has been heated and stirred to reach a suitable working temperature (180-200℃) and viscosity, the operator controls the discharge sealing device 15 via the controller 9 or manually. The moving cart 1 is connected to the discharge sealing device 15 via a tension spring on its outer side. After the discharge sealing device 15 is opened, the paint flows evenly into the paint roller hopper 13 located on one side of the moving cart 1 and near the front end of the spreader 12 through the discharge bin 10 installed inside the heating tank 5 and the inner tank 23 near the paint roller hopper 13. The operator pushes the moving cart 1, and the front end of the moving cart 1... The guide rod 11 on the side serves as a guide to ensure the straightness of the road markings. During the movement of the mobile vehicle 1, the paint roller hopper 13 evenly applies paint to the surface of the road or bridge to form basic markings. At the same time as the paint roller hopper 13 applies paint, the spreader 12 is started simultaneously, which transports reflective glass beads from the glass bead storage box 3 to the spreader 12 through the spreading pipe. The spreader 12 evenly spreads the glass beads on the surface of the freshly applied paint. The glass beads are embedded in the uncured paint. After the paint cools and solidifies, it forms road markings with reflective properties, improving the safety of driving at night.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A marking and marking device for roads and bridges, comprising a mobile vehicle (1), characterized in that: A gas box (4) is fixedly installed on the top of the mobile vehicle (1). A glass bead storage box (3) is fixedly installed on one side of the outer wall of the gas box (4). A heating shell (22) is fixedly installed on the top of the side of the mobile vehicle (1) away from the gas box (4). A heating tank (5) is fixedly installed on the top of the heating shell (22). An inner tank (23) is fixedly installed inside the heating tank (5). A through hole for gas combustion pipe clamping is opened on one side of the inside of the heating shell (22). A spreader is fixedly installed on one side of the outer wall of the gas box (4). 12), the spreader (12) is connected to the glass bead storage box (3) through a spreading pipe. A paint roller hopper (13) is provided on one side of the mobile vehicle (1) and near the front end of the spreader (12). A feeding hopper (10) is installed inside the heating tank (5) and the inner tank (23) and near the top of the paint roller hopper (13). The inner tank (23) is wrapped with a spiral tube (27). A circulating heat preservation mechanism is provided above the spiral tube (27). An anti-coking heat equalization mechanism is provided inside the inner tank (23).

2. The marking and marking device for roads and bridges according to claim 1, characterized in that: The circulating heat preservation mechanism includes a circulating suction fan (7), a suction pipe (20) is connected to one side of the circulating suction fan (7), an electric control valve (26) is installed inside the suction pipe (20) and close to the circulating suction fan (7), one end of the suction pipe (20) extends to the interlayer between the heating tank (5) and the inner tank (23), and the end of the suction pipe (20) away from the circulating suction fan (7) is connected to a gas equalization pipe (21).

3. A marking and line-marking device for roads and bridges according to claim 2, characterized in that: A liquid storage ring pipe (24) is fixedly installed on the upper part of the inner wall of the heating tank (5). The upper end of the spiral pipe (27) is connected to the inside of the liquid storage ring pipe (24). A water inlet pipe (18) is connected to one end of the liquid storage ring pipe (24). The water inlet pipe (18) extends to the outside of the heating tank (5). The end of the spiral pipe (27) away from the water inlet pipe (18) extends to the outside of the heating tank (5) and is connected to a drain pipe (19). An air inlet pipe (17) is connected to one end of the circulating suction fan (7) away from the suction pipe (20). A heat-conducting plate (25) is fixedly installed above the liquid storage ring pipe (24) and near the air inlet pipe (17).

4. A marking and line marking device for roads and bridges according to claim 1, characterized in that: The anti-coking and heat equalization mechanism includes a rotating shaft (28) rotatably installed inside the inner tank (23), a bubble breaking mechanism is provided above the outside of the rotating shaft (28), a fitting (37) is fixedly sleeved below the outside of the rotating shaft (28), and a scraping mechanism is provided alternately above and below the fitting (37).

5. A marking and line-marking device for roads and bridges according to claim 4, characterized in that: The foam breaking mechanism includes two sets of sleeves (33) respectively installed on the outside of the rotating shaft (28). The two sets of sleeves (33) are arranged symmetrically up and down. A connecting rod (32) is fixedly installed on the outside of the sleeve (33). A sliding rod (38) is fixedly installed at both ends of the bottom of the connecting rod (32). A float rod (39) is slidably fitted on the outside of the two sliding rods (38). Foam breaking teeth (40) are installed at equal intervals along the horizontal direction at the bottom of the float rod (39). A curved ring frame (31) is fixedly fitted on the upper part of the inner wall of the inner tank (23).

6. A marking and line-marking device for roads and bridges according to claim 4, characterized in that: The scraping mechanism includes an arc-shaped inclined plate (30) fixedly installed on one side of the outer wall of the assembly (37). Multiple sets of dividing discs (34) are installed on the outer surface of the arc-shaped inclined plate (30), and multiple sets of rectangular slots (35) of different lengths are opened on the surface of the multiple sets of dividing discs (34).

7. A marking and marking device for roads and bridges according to claim 6, characterized in that: A scraper disc (29) is fixedly installed on the outer surface of the arc-shaped inclined plate (30) away from the dividing disc (34). The outer surface of the scraper disc (29) has multiple sets of filter holes to reduce resistance.

8. A marking and line marking device for roads and bridges according to claim 4, characterized in that: The upper end of the rotating shaft (28) extends to the top of the heating tank (5). A motor (6) is fixedly installed on the upper end of the rotating shaft (28). The motor (6) is fixed above the heating tank (5) by a mounting bracket. A hopper (16) is connected to one side of the top of the heating tank (5). A controller (9) is fixedly installed on the outer wall of the front end of the heating tank (5). Handrails (2) are fixedly installed on both sides of the outer wall of the glass bead storage box (3). An air valve (8) is connected to one side of the top of the heating tank (5).

9. A marking and line marking device for roads and bridges according to claim 1, characterized in that: A battery (14) is installed below the glass bead storage box (3). A guide rod (11) is provided on the outer side of the front end of the mobile vehicle (1). The mobile vehicle (1) is connected to a discharge blocker (15) by a tension spring on the outer side. The discharge blocker (15) controls the discharge of material from the discharge bin (10).

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