Road surface marking equipment and use method

The road marking device addresses labor-intensive and quality issues by integrating cleaning, drawing, and solidification mechanisms to ensure efficient, high-quality road markings with reduced manual effort and improved appearance.

CN120311577APending Publication Date: 2025-07-15MCC TIANGONG GROUP TIANJIN CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510727302.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-03
Publication Date
2025-07-15

AI Technical Summary

Technical Problem

The existing pavement marking equipment has problems such as large human resources consumption and uneven marking quality. The dust blown by the blowing equipment affects the marking quality, and the spraying equipment's paint splash leads to the unsightly marking.

Method used

Design a pavement marking equipment that integrates the functions of cleaning, scribing and coating curing, including a cleaning mechanism, scribing mechanism and coating curing mechanism. By optimizing the structure of the cleaning mechanism and setting a limit mechanism, the secondary cleaning of dust and effective curing of paint are achieved to avoid coating splashing.

Benefits of technology

It realizes that the entire process is completed by a single person, reduces the cost of operation, improves the quality of marking, ensures the cleanliness of marking areas, avoids paint spots, and improves aesthetics.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120311577A_ABST
    Figure CN120311577A_ABST
Patent Text Reader

Abstract

The invention provides road surface marking equipment and a using method, the road surface marking equipment comprises a vehicle body and a dust removing mechanism, a marking mechanism, a limiting mechanism and a coating curing mechanism which are arranged on the vehicle body, and the dust removing mechanism and the coating curing mechanism are located on the two sides of the marking mechanism correspondingly; the road surface dust removal mechanism is used for removing dust on the road surface before spraying of the marking mechanism and curing the road surface coating after spraying of the marking mechanism; and the limiting mechanism is located between the ash removal mechanism and the scribing mechanism, at least partially surrounds a spraying area of the scribing mechanism and is used for preventing paint from splashing when the scribing mechanism sprays. The invention provides road surface marking equipment which integrates the functions of cleaning dust, marking and promoting coating curing, so that the labor consumption can be reduced, and the operation cost can be reduced; and through the structural optimization design of the ash removal mechanism and the arrangement of the limiting mechanism between the ash removal mechanism and the scribing mechanism, the coating scribing quality is comprehensively improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of road marking construction, and particularly to a road marking device and a using method thereof. Background Art

[0002] Road markings play an important role in maintaining traffic order and ensuring road safety. The marking of road markings generally includes processes such as blowing dust, spraying paint, and heating and curing the paint. Each process requires independent manual operation, which will consume a large amount of human resources and increase the operation cost.

[0003] In addition, there are still many technical defects in existing construction equipment, resulting in uneven marking quality. For example, although most of the dust blown by existing blowing equipment will fall on both sides of the marking area, a small part will still fall back onto the marking area, and it is still difficult to avoid affecting the marking quality; for another example, existing spraying equipment is difficult to avoid paint splashing, resulting in paint spots on both sides of the marking, affecting the appearance, and so on. Summary of the Invention

[0004] The purpose of the present invention is to provide a road marking device and a using method thereof to solve the deficiencies in the above background art.

[0005] The technical solution of the present invention is: a road marking device, which includes: a vehicle body and a dust cleaning mechanism, a marking mechanism, a limiting mechanism, and a paint curing mechanism configured thereon. The dust cleaning mechanism and the paint curing mechanism are respectively located on both sides of the marking mechanism, and are respectively used for cleaning the road surface before the marking mechanism sprays paint and curing the road surface paint after the marking mechanism sprays paint; the limiting mechanism is located between the dust cleaning mechanism and the marking mechanism, and at least partially surrounds the spraying area of the marking mechanism to prevent paint from splashing when the marking mechanism sprays paint.

[0006] Preferably, the dust cleaning mechanism includes an air filtration box, an air pump, a first air nozzle, and a second air nozzle connected by an air pipe. An air filter screen is configured in the air filtration box, and the air filter screen at least divides the inner cavity of the air filtration box into a first inner cavity and a second inner cavity; the air pump is connected to the first inner cavity and the first air nozzle to supply air to the first air nozzle; the second air nozzle is connected to the second inner cavity to return air to the second inner cavity.

[0007] Preferably, along the direction away from the air pump, the inner diameter of the first air nozzle gradually decreases; along the direction close to the second inner cavity, the inner diameter of the second air nozzle gradually decreases;

[0008] One side of the air filtration box is open and hinged with a side door panel, and the air filter screen is detachably connected to the inner wall of the air filtration box.

[0009] Preferably, the scribing mechanism includes a paint bucket, a paint pump, and a quick connector connected by a paint pipe. The quick connector is located at the output end of the paint pipe and is used to connect a paint nozzle; the output end of the paint nozzle is bent towards the limiting mechanism;

[0010] A feeding port, a stirring motor, and a stirring blade are configured in the paint bucket. The output shaft of the stirring motor is connected to the stirring blade to drive the stirring blade to stir the paint filled through the feeding port.

[0011] Preferably, the limiting mechanism includes a first mounting bracket and paint baffles. A set of paint baffles is provided on each side of the output end of the paint nozzle. The paint baffles are movably connected to the first mounting bracket and can move in a direction perpendicular to the road surface scribing.

[0012] Preferably, a limiting chute is configured on the first mounting bracket. A bidirectional lead screw and two sets of sliders are provided in the limiting chute. The bidirectional lead screw is rotatably connected to the limiting chute. The sliders are slidably abutted against the limiting chute. The two sets of sliders are respectively threaded on the threads with opposite directions in the bidirectional lead screw, and the two sets of paint baffles are respectively connected to different sliders;

[0013] A driving wheel disc is configured at the end of the bidirectional lead screw extending out of the limiting chute.

[0014] Preferably, the limiting mechanism includes a first guiding rod. The first guiding rod extends along the direction of the road surface scribing, and one end of the first guiding rod is connected to the side surface of the paint baffle close to the ash cleaning component.

[0015] Preferably, the paint curing mechanism includes a second mounting bracket, a lifting lead screw, and a heating plate. The lifting lead screw penetrates and is threaded with the second mounting bracket, and the bottom end is rotatably connected to the heating plate to lift the heating plate; an installation groove with an opening facing away from the second mounting bracket is provided in the heating plate. An electric heating tube is configured in the installation groove, and a baffle net detachably connected to the installation groove is configured at the bottom of the electric heating tube.

[0016] Preferably, a second guiding rod is slidably penetrated through the second mounting bracket. The second guiding rod extends in the same direction as the lifting lead screw, and the bottom end is connected to the heating plate.

[0017] Preferably, the vehicle body includes a base, moving wheels, a push handle, a power source located on the base, and control keys located on the push handle. The push handle and the moving wheels are respectively located at the top and bottom ends of the base; the control keys are connected to the power source to supply energy to the ash cleaning mechanism, the scribing mechanism, and the paint curing mechanism and regulate their operating states.

[0018] The technical solution of the present invention further includes: a method of using the above-mentioned road surface scribing equipment, which includes the steps:

[0019] Configure the type of the paint nozzle, adjust the spacing of the paint baffle, and the height of the heating plate according to the construction requirements;

[0020] Start the road marking device, and use the dust cleaning mechanism to remove the dust on the road surface in front of the marking mechanism;

[0021] After using the marking mechanism to spray the marking, use the paint curing mechanism to heat and promote the curing of the road paint.

[0022] The beneficial effects of the present invention are as follows: A road marking device integrating the functions of dust cleaning, marking, and promoting paint curing is provided. Only a single person needs to operate the control keys on the vehicle body to complete all the above-mentioned road marking processes, which can reduce the labor consumption and lower the operation cost. In addition, through the optimized design of the structure of the dust cleaning mechanism, the dust falling back onto the marking area is cleaned twice, improving the dust cleaning quality of the marking area. By arranging a limiting mechanism between the dust cleaning mechanism and the marking mechanism, paint splashing can be avoided, and situations such as paint spots on both sides of the marking that affect the appearance can be avoided, comprehensively improving the quality of the paint marking. Description of the Drawings

[0023] Figure 1 is the top view of the embodiment of the present invention;

[0024] Figure 2 is the side view of the embodiment of the present invention;

[0025] Figure 3 is the side sectional view of the air filter box in the embodiment of the present invention;

[0026] Figure 4 is the internal structure diagram of the air filter box in the embodiment of the present invention;

[0027] Figure 5 is the structure diagram of the limiting mechanism in the embodiment of the present invention.

[0028] In the figure:

[0029] 1, vehicle body; 101, base; 102, moving wheel; 103, push handle; 104, power supply; 105, control key;

[0030] 2, dust cleaning mechanism; 201, air filter box; 202, first inner cavity; 203, second inner cavity; 204, air pump; 205, first air nozzle; 206, second air nozzle; 207, first air pipe; 208, second air pipe; 209, third air pipe; 210, fourth air pipe; 211, air filter screen; 212, connecting short beam; 213, side door panel;

[0031] 3. Marking mechanism; 301. Paint bucket; 302. Paint pump; 303. Quick connector; 304. Paint pipe; 305. Stirring motor; 306. Stirring blade; 307. Feeding port; 308. Paint nozzle;

[0032] 4. Limiting mechanism; 401. First mounting bracket; 402. Paint baffle; 403. Bi-directional lead screw; 404. Slide block; 405. Driving wheel disc; 406. First guide rod; 407. Limiting chute;

[0033] 5. Paint curing mechanism; 501. Second mounting bracket; 502. Lifting lead screw; 503. Heating plate; 504. Installation groove; 505. Electric heating tube; 506. Grid net; 507. Second guide rod. Detailed implementation manner

[0034] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "set", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0036] Refer to the attached Figures 1-5 , this embodiment provides a road marking device, which includes: vehicle body 1, dust cleaning mechanism 2, marking mechanism 3, limiting mechanism 4 and paint curing mechanism 55. The dust cleaning mechanism 2, marking mechanism 3, limiting mechanism 4 and paint mechanism curing mechanism are arranged on the vehicle body 1 and can move with the vehicle body 1 to perform tasks such as dust cleaning and marking. The dust cleaning mechanism 2 and the paint curing mechanism 55 are respectively located on both sides of the marking mechanism 3, and are respectively used for cleaning the road surface before the marking mechanism 3 sprays paint and curing the road surface paint after the marking mechanism 3 sprays paint; the limiting mechanism 4 is located between the dust cleaning mechanism 2 and the marking mechanism 3, and at least partially surrounds the spraying area of the marking mechanism 3 to prevent paint from splashing when the marking mechanism 3 sprays paint.

[0037] The vehicle body 1 includes a base 101, moving wheels 102, a push handle 103, a power source 104, and control keys 105. The moving wheels 102 are configured at the bottom end of the base 101, and the push handle 103 is obliquely configured at the top end of the base 101 for a person to hold and push the vehicle body 1. The power source 104 is configured on the base 101 and can be a storage battery, a new energy battery (such as a solar battery), etc., for supplying energy to the dust cleaning mechanism 2, the line marking mechanism 3, and the paint curing mechanism 55. The control keys 105 are configured on the push handle 103 and are signal-connected to the power source 104, the dust cleaning mechanism 2, the line marking mechanism 3, and the paint curing mechanism 55 to regulate their operating states.

[0038] The dust cleaning mechanism 2 includes an air filtration box 201, an air pump 204, a first air nozzle 205, a second air nozzle 206, and air pipes. According to the different connected components, in this embodiment, the air pipes are divided into a first air pipe 207, a second air pipe 208, a third air pipe 209, and a fourth air pipe 210. The air filtration box 201 is fixedly arranged on the top of the base 101, in which an air filter screen 211 is configured. The air filter screen 211 divides the inner cavity of the air filtration box 201 into a first inner cavity 202 and a second inner cavity 203. The first inner cavity 202 is located above the second inner cavity 203. The air pump 204 is fixedly configured on the top of the air filtration box 201. Its input end is connected to the first inner cavity 202, and its output end is connected to the first air nozzle 205 through the first air pipe 207 and the second air pipe 208 for delivering the gas in the first inner cavity 202 to the first air nozzle 205. The second air nozzle 206 is connected to the second inner cavity 203 through the third air pipe 209 and the fourth air pipe 210.

[0039] During use, when the air pump 204 is started, the air pump 204 delivers the gas in the first inner cavity 202 to the first air nozzle 205, and the first air nozzle 205 sprays the gas onto the ground to blow up the dust on the ground. Since the air pump 204 sucks away the gas in the first inner cavity 202, a negative pressure state is formed inside the air filtration box 201. And because the second inner cavity 203 is communicated with the first inner cavity 202, and the second air nozzle 206 is communicated with the second inner cavity 203 and the atmosphere, a suction force will be generated at the second air nozzle 206 in the negative pressure state. The dust that falls back to the ground from the air, especially the dust that returns directly above the area to be marked, will be sucked into the second inner cavity 203 by the second air nozzle 206, thus ensuring the cleanliness of the area to be marked and improving the subsequent line marking quality. The dust and air sucked into the second inner cavity 203 are filtered by the air filter screen 211. The dust remains in the second inner cavity 203, and the air enters the first inner cavity 202, which can ensure the cleanliness of the gas ejected from the first air nozzle 205 and ensure the effect of dust cleaning on the ground.

[0040] The input end of the first air pipe 207 is connected to the air pump 204, and the output end is vertical. The output end of the third air pipe 209 is connected to the air filter box 201, and the input end is vertical. The second air pipe 208 and the fourth air pipe 210 are respectively arranged horizontally and are respectively connected to the output end of the first air pipe 207 and the input end of the third air pipe 209, so as to install a plurality of laterally arranged first air nozzles 205 or a plurality of laterally arranged second air nozzles 206, ensuring that the width of the dust cleaning area of the dust cleaning mechanism 2 is compliant and reasonable and improving the dust cleaning efficiency.

[0041] In addition, a connecting short beam 212 can be arranged between the second air pipe 208 and the fourth air pipe 210 to improve the stability.

[0042] To improve the dust cleaning efficiency and quality, the first air nozzle 205 and the second air nozzle 206 are structurally optimized as follows in this embodiment: along the direction away from the air pump 204, the inner diameter of the first air nozzle 205 gradually decreases; along the direction close to the second inner cavity 203, the inner diameter of the second air nozzle 206 gradually decreases.

[0043] To ensure the dust cleaning efficiency and quality, the inner wall of the air filter box 201 and the air filter screen 211 also need to be cleaned or maintained regularly. Therefore, in this embodiment, an opening is provided on one side of the air filter box 201 and a side door plate 213 is hinged. The non-hinged end of the side door plate 213 is snap-connected to the air filter box 201, and a sealing gasket is arranged on the contact surface between the side door plate 213 and the air filter box 201. In addition, the air filter screen 211 and the inner wall of the air filter box 201 are configured to be detachably connected. For example, the air filter screen 211 is horizontally slidably connected to the inner wall of the air filter box 201 (refer to the appendix Figure 4 ).

[0044] The scribing mechanism 3 includes a paint bucket 301, a paint pump 302, a quick connector 303, a paint pipe 304, a stirring motor 305 and a stirring blade 306. The paint bucket 301 is fixedly arranged on the top of the base 101. A feeding port 307 is arranged on the top of the paint bucket 301. The stirring motor 305 is arranged on the top of the paint bucket 301. The stirring blade 306 is arranged inside the paint bucket 301 and is connected to the stirring motor 305 through a vertical shaft. When the stirring motor 305 is started, the stirring blade 306 can rotate around its output shaft to stir the paint filled through the feeding port 307; the paint pump 302, the paint pipe 304 and the quick connector 303 are located at the lower part outside the paint bucket 301. The quick connector 303 is connected to the paint bucket 301 through the paint pipe 304 and the paint pump 302. The paint pump 302 can convey the paint in the paint bucket 301 to the quick connector 303 through the paint pipe 304. The output end of the quick connector 303 is connected to the paint nozzle 308. Different models of paint nozzles 308 can be replaced as needed. The output end of the paint nozzle 308 is bent towards the limiting mechanism 4, so that the limiting mechanism 4 can limit the paint sprayed by the paint nozzle 308 to avoid splashing.

[0045] The limiting mechanism 4 includes a first mounting bracket 401, a paint baffle 402, a bidirectional lead screw 403, sliders 404, a driving wheel disc 405 and a first guide rod 406. The first mounting bracket 401 is plate-shaped, one end of which is connected to the base 101 and the other end is suspended. A limiting chute 407 is configured on the first mounting bracket 401. The bidirectional lead screw 403 extends in a direction perpendicular to the road marking and is rotatably connected to the limiting chute 407. The end of the bidirectional lead screw 403 extending out of the limiting chute 407 is connected to the driving wheel disc 405. There are two sets of sliders 404, paint baffles 402 and first guide rods 406 respectively. The sliders 404 slide and abut against the inner wall of the limiting chute 407, and the two sets of sliders 404 are respectively screwed onto the threads with opposite directions in the bidirectional lead screw 403. The two sets of paint baffles 402 are located below the first mounting bracket 401 and are respectively connected to different sliders 404, restricting the output end of the paint nozzle 308 between the two sets of paint baffles 402. The first guide rod 406 extends in the direction of the road marking, and one end of it is connected to the side of the paint baffle 402 close to the ash cleaning assembly.

[0046] During use, replace the paint nozzle 308 with a suitable model according to the marking width; rotate the driving wheel disc 405 to drive the bidirectional lead screw 403 to rotate. At this time, the sliders 404 will move along the axial direction of the bidirectional lead screw 403. Since the threads are opposite, the two sliders 404 will move towards or away from each other, resulting in a change in the distance between the two sets of paint baffles 402. Stop rotating the driving wheel disc 405 after adjusting it to fit the marking width. During the marking operation, the first guide rod 406 can be compared with the road positioning mark before marking. If the first guide rod 406 deviates too much from the road positioning mark, it means that the marking is skewed, reminding the worker to adjust the traveling direction of the vehicle body 1.

[0047] In addition, scales can be set on the paint baffle 402 to provide instructions for the worker when adjusting the distance between the two sets of paint baffles 402. Rubber sheets can also be set on the bottom surface of the paint baffle 402 to prevent the body of the paint baffle 402 from being quickly worn out due to friction with the ground.

[0048] The paint curing mechanism 55 includes a second mounting bracket 501, a lifting lead screw 502 and a heating plate 503. The second mounting bracket 501 is plate-shaped, one end of which is connected to the base 101 and the other end is suspended. The lifting lead screw 502 is vertically configured and penetrates and is screwed to the second mounting bracket 501. The heating plate 503 is located below the second mounting bracket 501, and its top surface is rotatably connected to the bottom end of the lifting lead screw 502. The heating plate 503 can be lifted when the lifting lead screw 502 rotates. An installation groove 504 with an opening facing away from the second mounting bracket 501 is provided in the heating plate 503. An electric heating tube 505 is configured in the installation groove 504, and a baffle net 506 detachably connected to the installation groove 504 is configured at the bottom of the electric heating tube 505.

[0049] When it is necessary to cure the paint sprayed by the scribing mechanism 3, rotate the lifting screw rod 502 to move the heating plate 503 close to the ground to an appropriate position, and start the electric heating tube 505 to heat the paint on the ground by the electric heating tube 505, so as to accelerate the drying and curing speed of the paint.

[0050] To ensure the smoothness of the lifting of the heating plate 503, in this embodiment, a second guiding rod 507 is also slidably penetrated through the second mounting bracket 501. The second guiding rod 507 extends in the same direction as the lifting screw rod 502, and its bottom end is connected to the heating plate 503. When rotating the lifting screw rod 502 to lift and lower the heating plate 503, the second guiding rod 507 can also be lifted and lowered accordingly to jointly ensure the smooth movement of the heating plate 503.

[0051] Compared with the prior art, the beneficial effects of the present invention at least include: providing a road scribing device integrating functions of dust cleaning, scribing and promoting paint curing. Only by a single operator operating the control key 105 on the vehicle body 1 can the above-mentioned full process of road scribing be completed, which can reduce the consumption of labor and lower the operation cost. In addition, through the optimized design of the structure of the dust cleaning mechanism 2, the dust falling back to the scribing area is cleaned twice, improving the dust cleaning quality of the scribing area. By arranging the limiting mechanism 4 between the dust cleaning mechanism 2 and the scribing mechanism 3, paint splashing can be avoided, and the situation of paint spots on both sides of the marking line affecting the appearance can be avoided, comprehensively improving the quality of paint scribing.

[0052] The above is the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A road marking device, characterized in that, Including: A vehicle body and a dust cleaning mechanism, a line marking mechanism, a limiting mechanism, and a coating curing mechanism disposed thereon. The dust cleaning mechanism and the coating curing mechanism are respectively located on both sides of the line marking mechanism, and are respectively used for cleaning the road surface before the line marking mechanism sprays and curing the road surface coating after the line marking mechanism sprays; the limiting mechanism is located between the dust cleaning mechanism and the line marking mechanism, and at least partially surrounds the spraying area of the line marking mechanism to prevent paint from splashing when the line marking mechanism sprays.

2. The pavement marking device according to claim 1, characterized in that, The dust cleaning mechanism includes an air filtration box, an air pump, a first air nozzle, and a second air nozzle connected by an air pipe. An air filter screen is disposed in the air filtration box, and the air filter screen at least divides the inner cavity of the air filtration box into a first inner cavity and a second inner cavity; the air pump is connected to the first inner cavity and the first air nozzle to supply air to the first air nozzle; the second air nozzle is connected to the second inner cavity to return air to the second inner cavity.

3. The pavement marking device according to claim 2, characterized in that Along the direction away from the air pump, the inner diameter of the first air nozzle gradually decreases; along the direction close to the second inner cavity, the inner diameter of the second air nozzle gradually decreases; One side of the air filtration box is open and hinged with a side door panel, and the air filter screen is detachably connected to the inner wall of the air filtration box.

4. The road marking device according to any one of claims 1-3, characterized in that, The line marking mechanism includes a paint bucket, a paint pump, and a quick connector connected by a paint pipe. The quick connector is located at the output end of the paint pipe and is used to connect a paint nozzle; the output end of the paint nozzle is bent towards the limiting mechanism; A replenishing port, a stirring motor, and a stirring blade are disposed in the paint bucket. The output shaft of the stirring motor is connected to the stirring blade to drive the stirring blade to stir the paint replenished through the replenishing port.

5. The pavement marking device according to claim 4, characterized in that, The limiting mechanism includes a first mounting bracket and a paint baffle. A set of paint baffles is provided on each side of the output end of the paint nozzle, and the paint baffles are movably connected to the first mounting bracket and can move in a direction perpendicular to the road surface marking.

6. The pavement marking device according to claim 5, characterized in that, A limiting chute is disposed on the first mounting bracket. A bidirectional lead screw and two sets of sliders are provided in the limiting chute. The bidirectional lead screw is rotatably connected to the limiting chute, and the sliders slide and abut against the limiting chute. The two sets of sliders are respectively screwed onto the threads with opposite directions in the bidirectional lead screw, and the two sets of paint baffles are respectively connected to different sliders; A driving wheel disc is disposed at the end of the bidirectional lead screw extending out of the limiting chute.

7. The road marking device according to claim 5 or 6, characterized in that, The limiting mechanism includes a first guiding rod. The first guiding rod extends along the direction of the road surface marking, and one end thereof is connected to the side surface of the paint baffle close to the dust cleaning component.

8. The road marking device according to claim 7, wherein, The coating curing mechanism includes a second mounting bracket, a lifting lead screw, and a heating plate. The lifting lead screw penetrates and is screwed to the second mounting bracket, and the bottom end is rotatably connected to the heating plate to lift the heating plate; an installation groove with an opening facing away from the second mounting bracket is provided in the heating plate, and an electric heating tube is disposed in the installation groove. A grid net detachably connected to the installation groove is disposed at the bottom of the electric heating tube; A second guiding rod is slidably penetrated through the second mounting bracket. The second guiding rod extends in the same direction as the lifting lead screw, and the bottom end is connected to the heating plate.

9. The pavement marking device according to any one of claims 1-3, 5-6, and 8, characterized in that, The vehicle body includes a base, moving wheels, a push handle, a power source located on the base, and control keys located on the push handle. The push handle and the moving wheels are respectively located at the top and bottom ends of the base. The control keys are connected to the power source to supply energy to the dust cleaning mechanism, the line marking mechanism, and the paint curing mechanism and regulate their operating states.

10. A method of using the road marking device according to claim 1, characterized in that, It includes the steps of: Configuring the model of the paint nozzle, adjusting the spacing of the paint baffle, and the height of the heating plate according to the construction requirements; Starting the road line marking equipment and using the dust cleaning mechanism to remove the dust on the road surface in front of the line marking mechanism; After spraying the lines using the line marking mechanism, using the paint curing mechanism to heat and promote the curing of the road paint.