A high-efficiency road marking spraying device

Abstract

The present invention relates to the field of municipal construction equipment, and specifically to an efficient road marking spraying device, comprising a mobile trolley, a spraying mechanism is installed on the mobile trolley, a material storage box is connected to a spray head through a pipeline, a height-fixing mechanism for adjusting the height of the spray head is provided on the mobile trolley, and a lifting component is used to drive the spray head to separate from the height-fixing mechanism and move upward independently; a cleaning mechanism for cleaning the spraying area of ​​the spray head is provided at the front end of the mobile trolley, a roller brush is slidably installed on the cleaning mechanism, the roller brush moves in accordance with the spraying path of the spray head, and the roller brush contacts a protrusion to trigger a sensing unit. The technical solution cleans the spraying path through the cleaning mechanism, and the roller brush slidably installed on the cleaning mechanism moves along the spraying path while detecting the protrusion on the spraying path, and the nozzle is lifted when the spraying mechanism moves to the protrusion through the cooperation of the sensing unit and the lifting component to prevent the nozzle from hitting the protrusion.

Description

Technical Field

[0001] The invention relates to the field of municipal construction equipment, and in particular to a high-efficiency road marking spraying device. Background Art

[0002] Traffic markings mainly include lane center lines, lane dividing lines, lane edge lines, and other markings such as pedestrian crossing lines. The marking sprayer is one of the equipment used in municipal road construction. It is a road construction machine widely used in roads, parking lots, squares and runways to mark different restrictions, guidance and warning signs on flat ground.

[0003] Existing road marking spraying vehicles need to clean the spraying area of ​​the road surface before spraying, which increases labor costs and reduces spraying efficiency. In addition, when the road marking spraying vehicle moves, there may be different degrees of protrusions between the area passed by the wheels and the spraying area. When there are protrusions on the spraying path that reach the height of the nozzle, the nozzle may be damaged. Summary of the invention

[0004] In response to the above problems, an efficient road marking spraying device is provided, which cleans the spraying path through a cleaning mechanism. A roller brush slidably mounted on the cleaning mechanism moves along the spraying path and detects protrusions on the spraying path. The nozzle is raised when the spraying mechanism moves to the protrusion through the cooperation of the sensing unit and the lifting assembly to prevent the nozzle from hitting the protrusion.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] A highly efficient road marking spraying device comprises a mobile trolley, on which a spraying mechanism for spraying marking lines is installed, a material storage box of the spraying mechanism is fixedly installed on the mobile trolley, the material storage box is connected to a spray head through a pipeline, the nozzle of the spray head faces downward to spray the marking lines, a height-fixing mechanism for adjusting the height of the spray head is provided on the mobile trolley, and the spray head is elastically connected to the height-fixing mechanism; the mobile trolley is also provided with a lifting assembly for driving the spray head to separate from the height-fixing mechanism and move upward independently; a cleaning mechanism for cleaning the spraying area of ​​the spray head is provided at the front end of the mobile trolley, a roller brush is slidably installed on the cleaning mechanism, the roller brush moves in accordance with the spraying path of the spray head, the roller brush contacts a protrusion to trigger a sensing unit, the sensing unit sends a signal to a controller, and the controller starts the lifting assembly to lift the spray head of the spray mechanism.

[0007] Preferably, the lifting assembly includes side baffles fixedly mounted on both sides of the spray head, the side baffles extend horizontally, and guide rods extending vertically upward are provided on the side baffles, and the guide rods are inserted into the moving trolley; the top ends of the guide rods are connected through horizontal connecting plates; the lifting assembly also includes a linear drive that pushes the connecting plates in the vertical direction, and the linear drive is fixedly mounted on the moving trolley.

[0008] Preferably, the height-fixing mechanism includes a height-adjusting bracket, which is inserted into a screw rod extending vertically downward arranged on the moving trolley, and has at least two screw rods, on which are provided locking nuts for fixing the position of the height-adjusting bracket; support plates extending horizontally inward are provided on both sides of the height-adjusting bracket, and the support plates are located under the side baffles on both sides of the spray head; a spring is sleeved on the guide rod, and the spring elastically connects the upper side of the guide rod and the bottom of the moving trolley, and the spring applies elastic force to cause the spray head to move downward to fit the support plate.

[0009] Preferably, a magnet is provided on the upper side of the support plate, and adsorption components are fixedly installed on the lower sides of the side baffles on both sides of the spray head, and the magnet and the adsorption components adsorb and stabilize the position of the side baffles.

[0010] Preferably, baffle plates are slidably installed at both ends of the bottom of the height adjustment bracket of the height-fixing mechanism, and the two baffle plates move in the horizontal direction to change the spacing, and the nozzle sprays the area between the baffle plates.

[0011] Preferably, the cleaning mechanism also includes a blower and an air outlet duct installed on the mobile vehicle, the air outlet end of the blower is connected to the air outlet duct through a pipe, one end of the air outlet duct blows air toward the forward direction of the mobile vehicle, and the roller brush is slidably installed on the lower side of the air outlet duct.

[0012] Preferably, shafts are coaxially arranged at both ends of the roller brush, and vertically extending waist-shaped holes are arranged on both sides below the air outlet duct, and the shaft is inserted into the waist-shaped holes for limited sliding; a trigger block is arranged at the top of the shaft, and the trigger block is slidably installed in a limiting slide rail arranged on the outside of the air outlet duct, and the limiting slide rail is located on the outside of the waist-shaped hole and extends in a vertical direction; the sensing unit is arranged on the top of the limiting slide rail, and the working end of the sensing unit is arranged downward.

[0013] Preferably, the trigger block comprises a first contact block and a second contact block which are elastically connected, the first contact block is fixedly inserted on the shaft, and the second contact block is used for contacting the working end of the sensing unit.

[0014] Preferably, bristles are arranged on the circumference of the roller brush, and the bristles are evenly spaced around the circumference of the roller brush; a scraper plate is hinged under the air outlet duct, one end of the scraper plate is attached to the roller brush, and a slot is arranged on the scraper plate, and the bristles enter between the slots to scrape off impurities.

[0015] Preferably, the air outlet duct is connected to one end of the air exhaust channel, and the other end of the air exhaust channel is located at the upper end of the contact side between the roller brush and the scraper plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention cleans the spraying path through a cleaning mechanism to improve the spraying effect. The roller brush slidably mounted on the cleaning mechanism moves along the spraying path while detecting protrusions on the spraying path. The nozzle is raised when the spraying mechanism moves to the protrusion through the cooperation of the sensing unit and the lifting assembly to prevent the nozzle from hitting the protrusion.

[0018] 2. The present invention installs the spray head of the spray mechanism through a height-adjusting bracket, so that the height position of the height-adjusting bracket can be adjusted to drive the height position of the spray head to change. The limiting effect of the support plate can make the spray head move up and can also ensure that the nozzle is reset to the initial spraying height. The presence of the spring can prevent the spray head from shaking too much when moving up and affecting the spraying quality. The magnet and the adsorption part are adsorbed to ensure that the spray head will not shake or jitter easily during the movement of the mobile cart.

[0019] 3. The present invention prevents the spraying range of the nozzle from becoming larger due to the increase in the height of the nozzle from the road surface by using a material baffle plate that is slidably installed at the bottom of the height adjustment bracket. The material baffle plate blocks the increased spraying range, ensuring that the spraying width of the road marking is the same and the edge is smooth, avoiding secondary repairs and improving the spraying efficiency of the marking.

[0020] 4. The present invention forms a trigger block by elastically connecting the first contact block and the second contact block, thereby preventing the roller brush from contacting protrusions of different heights during the rolling process and causing squeezing of the working end of the sensing unit.

[0021] 5. The present invention performs secondary cleaning of the road surface through the bristles arranged on the peripheral side of the roller brush, and the scraper plate hinged under the air outlet duct scrapes off the impurities attached to the roller brush. The air circulation speed on the air outlet duct is relatively fast, thereby forming a negative pressure in the exhaust channel. The impurities scraped off by the scraper plate are transported to the air outlet duct through the negative pressure, and are discharged from the air outlet duct with the air flow and blown to both sides of the spraying area, thereby preventing the spraying area from being affected again and improving the quality of the spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional high-efficiency road marking spraying device. Figure 1 ;

[0023] Figure 2 yes Figure 1 A local enlarged view of point A;

[0024] Figure 3 It is a top view of a high-efficiency road marking spraying device in a first working state;

[0025] Figure 4 yes Figure 3 A cross-sectional view of the section at BB;

[0026] Figure 5 yes Figure 4 A partial enlarged view of point C;

[0027] Figure 6 yes Figure 3 Cross-sectional view at DD of FIG.

[0028] Figure 7 yes Figure 6 A local enlarged view of point E;

[0029] Figure 8 It is a three-dimensional high-efficiency road marking spraying device. Figure 2 ;

[0030] Fig. 9 yes Figure 8 A partial enlarged view of point F;

[0031] Fig.10 It is a side view of a highly efficient road marking spraying device in a second working state;

[0032] Fig.11 yes Fig.10 A cross-sectional view of the section at GG;

[0033] Fig.12 yes Fig.11 A partial enlarged view of point H.

[0034] The numbers in the figure are:

[0035] 1-Mobile trolley;

[0036] 11- screw;

[0037] 111-locking nut;

[0038] 2-Spraying mechanism;

[0039] 21- storage box;

[0040] 22-spray head;

[0041] 221-nozzle;

[0042] 3- Height setting mechanism;

[0043] 31- Height adjustment bracket;

[0044] 311-support plate; 312-magnet;

[0045] 32- material blocking plate;

[0046] 4-Lifting assembly;

[0047] 41- side baffle;

[0048] 411-guide rod; 412-connecting plate; 413-spring; 414-adsorption member;

[0049] 42-Linear drive;

[0050] 5- Cleaning mechanism;

[0051] 51-Roller brush;

[0052] 511- shaft; 512- bristles;

[0053] 52-sensing unit;

[0054] 53- Blower;

[0055] 54-air outlet duct;

[0056] 541-waist-shaped hole; 542-limiting slide rail; 543-scraper plate; 544-card slot; 545-exhaust channel;

[0057] 55-trigger block;

[0058] 551 - first contact block; 552 - second contact block. DETAILED DESCRIPTION

[0059] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] Reference Figures 1 to 4 : A high-efficiency road marking spraying device comprises a mobile trolley 1, on which is mounted a spraying mechanism 2 for spraying marking lines, a material storage box 21 of the spraying mechanism 2 being fixedly mounted on the mobile trolley 1, the material storage box 21 being connected to a spray head 22 through a pipeline, a nozzle 221 of the spray head 22 spraying marking lines downward, a height-fixing mechanism 3 for adjusting the height of the spray head 22 being arranged on the mobile trolley 1, the spray head 22 being elastically connected to the height-fixing mechanism 3; a lifting assembly 4 for driving the spray head 22 to separate from the height-fixing mechanism 3 and move upward independently is also arranged on the mobile trolley 1; a cleaning mechanism 5 for cleaning the spraying area of ​​the spray head 22 is arranged at the front end of the mobile trolley 1, a roller brush 51 being slidably mounted on the cleaning mechanism 5, the roller brush 51 moving in accordance with the spraying path of the spray head 22, the roller brush 51 contacting a protrusion triggering a sensing unit 52, the sensing unit 52 sending a signal to a controller, and the controller starts the lifting assembly 4 to lift the spray head 22 of the spraying mechanism 2.

[0061] When using the present device to spray road markings, the staff will fix the storage box 21 of the spray mechanism 2 on the mobile cart 1 to store the paint. The paint in the storage box 21 is transported to the spray head 22 through a pipeline and sprayed downward through the nozzle 221 on the spray head 22. The spray mechanism 2 in this embodiment can be any existing technology, which will not be described in detail here. It only needs to include at least one nozzle 221. The spray mechanism 2 is installed on the height-fixing mechanism 3. The height-fixing mechanism 3 is used to adjust the spraying height of the nozzle 221 of the spray mechanism 2 from the road surface to achieve different spraying effects. The staff adjusts the position of the height-fixing mechanism 3 before spraying so that the nozzle of the spray mechanism 2 221 is kept in a suitable spraying position, and the staff drives the mobile trolley 1 to move along the spraying path to realize the spraying of the road markings. Rollers are arranged on both sides of the mobile trolley 1, and the mobile trolley 1 can stably move along the road surface, but the spraying position of the nozzle 221 is different from the rolling road fitting position of the mobile trolley 1. In order to avoid debris in the spraying path of the nozzle 221, the present embodiment is provided with a cleaning mechanism 5 for cleaning the spray head 22 at the front end of the mobile trolley 1. When the mobile trolley 1 moves, the cleaning mechanism 5 cleans the spraying path of the nozzle 221, so as to ensure that there will be no debris such as stones when the spraying mechanism 2 sprays the road markings, and no manual cleaning is required, which greatly improves the spraying efficiency of the markings. The rate is increased, and the paint is directly and evenly sprayed on the road surface to improve the spraying quality. A replaceable roller brush 51 is slidably installed on the cleaning mechanism 5. The length of the roller brush 51 should be the same as the width of the spraying area of ​​the spraying mechanism 2. The roller brush 51 rolls along the spraying path. When there is a protrusion on the spraying path, the roller brush 51 moves up in contact with the surface of the protrusion. The upward movement of the roller brush 51 will contact the working end of the sensing unit 52. The sensing unit 52 can be a contact sensor or a photoelectric sensor. After the sensing unit 52 is triggered, it sends a signal to the controller. The controller starts the lifting component 4 to drive the spray head 22 and the nozzle 221 to move upward, so that when the mobile car 1 drives the nozzle 221 to move to the protrusion on the spraying path, the nozzle 221 has After being lifted to a certain height to avoid the protrusion, damage to the nozzle 221 can be prevented. The lifting component 4 can be set with a certain lifting time. According to the moving speed of the mobile car 1 and the horizontal distance between the sensing unit 52 and the nozzle 221, the lifting component 4 can quickly drive the nozzle 221 to return to the initial height after the nozzle 221 passes the protrusion, thereby restoring the initial spraying effect. In this embodiment, the cleaning mechanism 5 cleans the spraying path to improve the spraying effect. The roller brush 51 detects the protrusion on the spraying path while moving along the spraying path. Through the cooperation of the sensing unit 52 and the lifting component 4, the nozzle 221 is lifted when the spraying mechanism 2 moves to the protrusion to avoid the nozzle 221 hitting the protrusion.

[0062] Reference Figure 4 , Figure 6 and Figure 7: The lifting assembly 4 includes side baffles 41 fixedly installed on both sides of the spray head 22, the side baffles 41 extend horizontally, and are provided with guide rods 411 extending vertically upward, and the guide rods 411 are inserted into the moving trolley 1; the top of the guide rods 411 are connected by a horizontal connecting plate 412; the lifting assembly 4 also includes a linear drive 42 that pushes the connecting plate 412 in the vertical direction, and the linear drive 42 is fixedly installed on the moving trolley 1.

[0063] The lifting assembly 4 is connected to the spray head 22 by arranging side baffles 41 at both ends of the spray head 22. The side baffles 41 are located at both ends of the spray head 22 and extend horizontally. Guide rods 411 extending vertically upward are arranged on the side baffles 41. The lifting assembly 4 is inserted into the base of the mobile trolley 1 through the guide rods 411 and extends to the upper side of the mobile trolley 1 to guide the moving direction of the spray head 22. The top of the guide rod 411 is connected through a horizontal connecting plate 412. The linear drive 42 of the lifting assembly 4 is fixedly installed on the mobile trolley 1. The working end of the linear drive 42 is arranged to move in the vertical direction. The linear drive 42 can be an electric push rod, etc. The working end of the linear drive 42 is not fixedly connected to the connecting plate 412. In this embodiment, the working end of the linear drive 42 is arranged to face upward and a contact plate is installed. When the controller receives a signal from the sensing unit 52, the linear drive 42 drives the working end to move upward to lift the connecting plate 412 upward, thereby driving the spray head 22 to move upward so that the nozzle 221 avoids the protrusion.

[0064] Reference Figure 6 and Figure 7 : The height-fixing mechanism 3 includes a height-adjusting bracket 31, which is inserted into a screw rod 11 extending vertically downwardly arranged on the moving trolley 1, and the screw rod 11 has at least two screw rods. The screw rod 11 is provided with a locking nut 111 for fixing the position of the height-adjusting bracket 31; support plates 311 extending horizontally toward the inside are provided on both sides of the height-adjusting bracket 31, and the support plates 311 are located below the side baffles 41 on both sides of the spray head 22; a spring 413 is sleeved on the guide rod 411, and the spring 413 elastically connects the upper side of the guide rod 411 and the bottom of the moving trolley 1, and the spring 413 applies elastic force to move the spray head 22 downward to fit the support plate 311.

[0065] The height-fixing mechanism 3 in this embodiment includes a height-adjusting bracket 31, which is used to install the spray head 22 of the spraying mechanism 2. Both sides of the height-adjusting bracket 31 are inserted into the screw rod 11 that moves vertically downward and is arranged at the bottom of the mobile trolley 1. The screw rod 11 has at least two parts to stabilize the position of the height-adjusting bracket 31 to prevent the height-adjusting bracket 31 from rotating around the axis of the screw rod 11 and affecting the spraying direction of the nozzle 221 installed on the height-adjusting bracket 31. After the height-adjusting bracket 31 is inserted into the screw rod 11, its height position is locked by the locking nut 111 on the screw rod 11. The locking nuts 111 are respectively arranged at the upper and lower ends of the height-adjusting bracket 31. Horizontally extending support plates 311 are arranged on both sides of the side baffle plate 41 where the spray head 22 is connected inside the height-adjusting bracket 31. The support plates 311 are located below the side baffle plate 41 to support the spray head 22. The nozzle 221 is positioned The support plate 311 is located below the side baffle plate 41, and when the linear actuator 42 of the lifting assembly 4 is started, the spray head 22 moves up under the drive of the side baffle plate 41 and disengages from the support plate 311. The support plate 311 will not affect the upward movement of the spray head 22, and when the spray head 22 is reset, the working end of the linear actuator 42 moves down, and the spray head 22 moves and resets under the action of its own gravity and the elastic force of the spring 413 sleeved on the guide rod 411. The limiting effect of the support plate 311 can ensure that the nozzle 221 returns to the initial spraying height, and the existence of the spring 413 can also ensure that the connecting plate 412 and the working end of the linear actuator 42 remain in contact when the spray head 22 moves up, and there will be no large jitter that affects the spraying quality.

[0066] Reference Figure 7 and Fig.12 A magnet 312 is disposed on the upper side of the support plate 311 , and adsorption components 414 are fixedly installed on the lower sides of the side baffles 41 on both sides of the spray head 22 , and the magnet 312 and the adsorption components 414 adsorb and stabilize the position of the side baffles 41 .

[0067] In order to ensure the stability of the position of the spray head 22 on the height-fixing mechanism 3, in this embodiment, a magnet 312 and an adsorbent 414 are respectively arranged on the contact surface of the support plate 311 and the side baffle plate 41. When the support plate 311 contacts the side baffle plate 41, the magnet 312 and the adsorbent 414 are adsorbed, thereby ensuring that the spray head 22 remains stable in the height-fixing mechanism 3 and will not easily shake or jitter during the movement of the mobile cart 1. When the lifting assembly 4 is started, the linear drive 42 drives the spray head 22 to exert an upward thrust, which can release the adsorption between the magnet 312 and the adsorbent 414, which is simple and quick.

[0068] Reference Figure 6 , Figure 7 and Fig.11 : The two ends of the bottom of the height adjustment bracket 31 of the height setting mechanism 3 are slidably installed with baffle plates 32 respectively, and the two baffle plates 32 move in the horizontal direction to change the spacing, and the nozzle 221 sprays the area between the baffle plates 32.

[0069] The baffle plates 32 are used to block the enlarged spraying range, thereby ensuring that the road marking spraying width is the same and the edges are smooth, thereby avoiding secondary repair and improving the spraying efficiency of the road marking.

[0070] Reference Figure 1 , Figure 4 and Figure 5 : The cleaning mechanism 5 also includes a blower 53 and an air outlet duct 54 installed on the mobile vehicle 1. The air outlet end of the blower 53 is connected to the air outlet duct 54 through a pipe. One end of the air outlet duct 54 blows air toward the forward direction of the mobile vehicle 1, and the roller brush 51 is slidably installed on the lower side of the air outlet duct 54.

[0071] In this embodiment, the cleaning mechanism 5 includes a blower 53 and an air outlet duct 54 installed on the mobile vehicle 1. The air outlet end of the blower 53 is connected to the air outlet duct 54 through a pipe and conveys airflow into the air outlet duct 54. The airflow is ejected toward the forward direction of the mobile vehicle 1 through the air outlet duct 54 to blow away impurities such as gravel on the spraying path, thereby cleaning the spraying path. The roller brush 51 is slidably installed on the lower side of the air outlet duct 54, and the roller brush 51 rolls against the road surface cleaned by the air outlet duct 54 to ensure that the detected protrusions are protrusions on the road surface that cannot be removed.

[0072] Reference Figure 1 , Figure 5 , Fig. 9 and Fig.10: A shaft rod 511 is coaxially arranged at both ends of the roller brush 51, and vertically extending waist-shaped holes 541 are arranged on both sides below the air outlet duct 54. The shaft rod 511 is inserted into the waist-shaped holes 541 for limited sliding; a trigger block 55 is arranged at the top of the shaft rod 511, and the trigger block 55 is slidably installed in a limiting slide rail 542 arranged on the outside of the air outlet duct 54, and the limiting slide rail 542 is located on the outside of the waist-shaped hole 541 and extends in the vertical direction; the sensing unit 52 is arranged on the top of the limiting slide rail 542, and the working end of the sensing unit 52 is arranged to face downward.

[0073] In this embodiment, shafts 511 are provided at both ends of the roller brush 51. The shafts 511 are inserted into waist-shaped holes 541 provided on both sides below the air outlet duct 54 to ensure that the roller brush 51 can only move in the vertical direction. Limiting heads should be provided at both ends of the shafts 511 to ensure that the roller brush 51 is located on the spraying route of the spraying mechanism 2. The shafts 511 are located outside the air outlet duct 54 and a head trigger block 55 is sleeved thereon. The trigger block 55 is limited by a limiting slide rail 542 provided outside the air outlet duct 54 to ensure that the roller brush 51 can drive the trigger block 55 to move stably in the vertical direction when it moves, and trigger the sensing unit 52 located at the top of the air outlet duct 54, thereby starting the lifting component 4.

[0074] Reference Figure 2 The trigger block 55 includes a first contact block 551 and a second contact block 552 which are elastically connected. The first contact block 551 is fixedly inserted on the shaft 511, and the second contact block 552 is used for contacting the working end of the sensing unit 52.

[0075] The roller brush 51 may contact protrusions of different heights during the rolling process. In order to ensure that the moving stroke of the roller brush 51 will not cause excessive extrusion on the working end of the sensing unit 52, the trigger block 55 in this embodiment is composed of a first contact block 551 and a second contact block 552 elastically connected. The first contact block 551 is connected to the shaft rod 511. A guide rod is provided on the first contact block 551 and is inserted into a guide sleeve provided at the bottom of the second contact block 552 to guide the movement between the first contact block 551 and the second contact block 552. The first contact block 551 and the second contact block 552 are elastically connected to form the trigger block 55 through a spring sleeved outside the guide sleeve. When the roller brush 51 moves upward, the first contact block 551 moves upward. Under the elastic force of the spring, the second contact block 552 also moves upward to contact the working end of the sensing unit 52. Then, the second contact block 552 fits the sensing unit 52. The upward movement of the roller brush 51 causes the first contact block 551 to move and compress the spring to avoid extrusion on the working end of the sensing unit 52.

[0076] Reference Figure 5 and Fig. 9: Bristles 512 are arranged on the circumference of the roller brush 51, and the bristles 512 are evenly spaced around the circumference of the roller brush 51; a scraper plate 543 is hingedly connected below the air outlet duct 54, one end of the scraper plate 543 is attached to the roller brush 51, and a slot 544 is arranged on the scraper plate 543, and the bristles 512 enter the slot 544 to scrape off impurities.

[0077] In this embodiment, bristles 512 are evenly spaced around the roller brush 51. The bristles 512 can be soft bristles for secondary brushing of the area blown by the air outlet duct 54, or hard bristles for removing impurities that are difficult to blow away. The scraper plate 543 hinged under the air outlet duct 54 scrapes off the impurities attached to the roller brush 51. The bristles 512 of the roller brush 51 enter the grooves 544 on the scraper plate 543 when rolling. The grooves 544 scrape off the impurities attached to the scraper plate 543, so that the clean bristles 512 roll with the roller brush 51 again and contact the road surface, thereby maintaining the cleaning effect of the roller brush 51.

[0078] Reference Figure 5 : The air outlet duct 54 is connected to one end of the exhaust channel 545, and the other end of the exhaust channel 545 is located at the upper end of the contact side between the rolling brush 51 and the scraper plate 543.

[0079] For example, in order to prevent impurities on the roller brush 51 removed by the scraper plate 543 from falling onto the spraying area again, in this embodiment, an exhaust channel 545 is arranged on the upper side of the roller brush 51 to connect to the air outlet duct 54. The air circulation speed on the air outlet duct 54 is faster, thereby forming a negative pressure in the exhaust channel 545. The other end of the exhaust channel 545 is arranged on the upper side of the contact end of the scraper plate 543 and the roller brush 51. The impurities scraped off by the scraper plate 543 are transported to the air outlet duct 54 through the negative pressure, and are discharged from the air outlet duct 54 along the air flow and blown to both sides of the spraying area, thereby preventing the spraying area from being affected again and improving the quality of spraying.

[0080] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An efficient road marking spraying device, comprising a mobile trolley (1), a spraying mechanism (2) for spraying markings is installed on the mobile trolley (1), a material storage box (21) of the spraying mechanism (2) is fixedly installed on the mobile trolley (1), the material storage box (21) is connected to a spray head (22) through a pipeline, and a nozzle (221) of the spray head (22) sprays markings downward, characterized in that: A height-fixing mechanism (3) for adjusting the height of the spray head (22) is provided on the movable carriage (1), and the spray head (22) is elastically connected to the height-fixing mechanism (3); The mobile trolley (1) is also provided with a lifting assembly (4) for driving the spray head (22) to separate from the height-fixing mechanism (3) and move upward independently; A cleaning mechanism (5) for cleaning the spraying area of ​​the spray head (22) is arranged at the front end of the mobile trolley (1); a roller brush (51) is slidably mounted on the cleaning mechanism (5); the roller brush (51) moves along the spraying path of the spray head (22); the roller brush (51) contacts the protrusion to trigger the sensing unit (52); the sensing unit (52) sends a signal to the controller, and the controller starts the lifting component (4) to lift the spray head (22) of the spray mechanism (2); The lifting assembly (4) comprises side baffles (41) fixedly mounted on both sides of the spray head (22), the side baffles (41) extending horizontally, and guide rods (411) extending vertically upward are arranged on the side baffles (41), and the guide rods (411) are inserted into the moving trolley (1); The top end of the guide rod (411) is connected via a horizontal connecting plate (412); The lifting assembly (4) also includes a linear drive (42) for pushing the connecting plate (412) in a vertical direction, and the linear drive (42) is fixedly mounted on the moving trolley (1); The height-fixing mechanism (3) comprises a height-adjusting bracket (31), which is inserted into a screw rod (11) extending vertically downward and arranged on the moving trolley (1), wherein the screw rod (11) has at least two screw rods, and a locking nut (111) for fixing the position of the height-adjusting bracket (31) is arranged on the screw rod (11); Support plates (311) extending horizontally inward are arranged on both sides of the height adjustment bracket (31), and the support plates (311) are located below the side baffles (41) on both sides of the spray head (22); A spring (413) is sleeved on the guide rod (411), and the spring (413) elastically connects the upper side of the guide rod (411) and the bottom of the moving trolley (1), and the spring (413) applies elastic force to move the spray head (22) downward to fit the support plate (311); A magnet (312) is disposed on the upper side of the support plate (311), and adsorption components (414) are fixedly installed on the lower sides of the side baffles (41) on both sides of the spray head (22), and the magnet (312) and the adsorption components (414) adsorb and stabilize the position of the side baffles (41); The two ends of the bottom of the height adjustment bracket (31) of the height setting mechanism (3) are slidably mounted with material blocking plates (32), the two material blocking plates (32) move in the horizontal direction to change the spacing, and the nozzle (221) sprays the area between the material blocking plates (32); The cleaning mechanism (5) further comprises a blower (53) and an air outlet duct (54) mounted on the mobile vehicle (1); an air outlet end of the blower (53) is connected to the air outlet duct (54) via a duct; one end of the air outlet duct (54) blows air in the direction of travel of the mobile vehicle (1); and a roller brush (51) is slidably mounted on the lower side of the air outlet duct (54); A shaft (511) is coaxially arranged at both ends of the roller brush (51), and waist-shaped holes (541) extending vertically are arranged on both sides below the air outlet duct (54), and the shaft (511) is inserted into the waist-shaped holes (541) to limit and slide; A trigger block (55) is provided at the top end of the shaft rod (511), and the trigger block (55) is slidably mounted in a limiting slide rail (542) provided on the outside of the air outlet duct (54), and the limiting slide rail (542) is located outside the waist-shaped hole (541) and extends in the vertical direction; The sensing unit (52) is arranged on the top of the limiting slide rail (542), and the working end of the sensing unit (52) is arranged downward; The trigger block (55) comprises a first contact block (551) and a second contact block (552) which are elastically connected, the first contact block (551) being fixedly inserted on the shaft (511), and the second contact block (552) being used to contact the working end of the sensing unit (52).

2. A high-efficiency road marking spraying device according to claim 1, characterized in that: The roller brush (51) is provided with bristles (512) on the circumference thereof, and the bristles (512) are distributed at equal intervals around the circumference of the roller brush (51); A scraper plate (543) is hingedly connected below the air outlet duct (54); one end of the scraper plate (543) is in contact with the roller brush (51); a slot (544) is provided on the scraper plate (543); the bristles (512) enter between the slots (544) to scrape off impurities.

3. The high-efficiency road marking spraying device according to claim 2, characterized in that: The air outlet duct (54) is connected to one end of the air exhaust channel (545), and the other end of the air exhaust channel (545) is located at the upper end of the contact side between the roller brush (51) and the scraper plate (543).

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