Guardrail spraying device

Abstract

The utility model provides a guardrail spraying device, which relates to the technical field of guardrail spraying devices, and comprises a box body, a feeding cavity is formed in the box body, and a storage box is arranged at the top of the box body; the feeding assembly is arranged in the feeding cavity and used for feeding and discharging the guardrails. According to the guardrail spraying device, through the arrangement of the spraying assembly, the whole spraying process can be simplified, meanwhile, air curtains can be formed at the two ends of the spraying channel, dust is prevented from entering the spraying channel, through the arrangement of the feeding assembly, a guardrail can be rapidly and accurately fed into a spraying area and rapidly moved out after spraying is completed, and the speed of the whole production line is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying devices, specifically a guardrail spraying device. Background Art

[0002] A guardrail is a facility used to provide safety isolation, protection, and guidance, commonly seen in places such as roads, bridges, construction sites, parks, residential areas, etc. During production, in order to achieve the purposes of anti-corrosion, aesthetics, and extended service life, spraying devices are often used to spray the surface of the guardrail.

[0003] However, when the existing guardrail spraying devices are in use, there are still certain defects. For example, when the existing guardrail spraying devices spray the guardrail, most of them use manual feeding. The operators need to load and unload frequently, which is rather troublesome. At the same time, in order to prevent the coating from being contaminated, after spraying, it is necessary to wait for the paint on the guardrail to dry before disassembling, which will affect the work efficiency. Summary of the Utility Model

[0004] In view of the above situation, to overcome the defects of the existing technology, the embodiments of the present invention provide a guardrail spraying device, which at least partially solves the above technical problems.

[0005] To achieve the above object, the present utility model provides the following technical solution. A guardrail spraying device includes: a box body, an inlet cavity is opened inside the box body, a storage tank is provided on the top of the box body, a feeding assembly is provided inside the inlet cavity for loading and unloading the guardrail. The feeding assembly includes a clamping frame, iron block a, a moving plate, electromagnet a, and an electric telescopic rod. A spraying channel is opened on one side inside the inlet cavity, a U-shaped block is provided inside the inlet cavity, two electromagnets a are provided at the bottom end of the U-shaped block, a moving plate is provided on the top of the box body, two electric telescopic rods are provided on the top of the moving plate, a clamping frame is provided inside the inlet cavity, and two iron blocks a are provided on the top of the clamping frame.

[0006] Further, an outlet cavity is opened on one side of the box body, a moving platform a is provided inside the outlet cavity, a discharging cavity is opened on one side of the box body, a moving platform b is provided inside the discharging cavity, and the outlet cavity and the discharging cavity are communicated through the inlet cavity.

[0007] Further, two servo motors are provided on the top of the box body. A threaded lead screw is connected to one side of the two servo motors. Two threaded holes are opened on one side of the moving plate and are matched with the threaded lead screw. Two limiting grooves are opened on the top of the box body. The bottom ends of the two electric telescopic rods respectively penetrate through the two limiting grooves and are fixedly connected to the U-shaped block.

[0008] Further, two screw rods are provided at the top of the clamping frame, two threaded holes matching the screw rods are opened at the top of the clamping frame, two clamping plates are provided at the top of the clamping frame, two fixing plates are provided inside the clamping frame, an electric push rod is provided inside the box body, one end of the electric push rod protrudes from one side of the box body and is fixedly connected with a connecting plate, one side of the connecting plate is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with an electromagnet b, one side of the clamping frame is fixedly connected with an iron block b, and the iron block b is magnetically connected with the electromagnet b.

[0009] Further, the spraying assembly between the box body and the material storage box includes: a paint pumping pump arranged inside the material storage box, a paint pumping pipe provided on one side of the paint pumping pump, a discharge pipe connected to one side of the paint pumping pump, a placement cavity opened at the bottom of the inner wall of the spraying channel, two air cavities opened at the top of the inner wall of the spraying channel, ventilation nets are provided inside both air cavities, a blower is provided inside each air cavity, two air guiding cavities are opened at the bottom of the inner wall of the spraying channel, and a purifier is provided on one side of the box body.

[0010] Further, one end of the discharge pipe is connected with a diversion pipe b through a three-way pipe, one end of the diversion pipe b extends into the spraying channel and is connected with a U-shaped spray head, one end of the discharge pipe is connected with a diversion pipe a through a three-way pipe, and one end of the diversion pipe a extends into the placement cavity and is connected with a spray head.

[0011] Further, the positions of the two air guiding cavities correspond to those of the two air cavities, and two air guiding pipes are connected to one side of the purifier, and the two air guiding pipes respectively extend into the air guiding cavities.

[0012] The utility model provides a guardrail spraying device, which has the following beneficial effects:

[0013] The advantages of the utility model are that through the setting of the spraying assembly, there is no need to manually flip the guardrail or perform multiple spraying operations, which simplifies the whole spraying process, reduces the need for manual intervention, reduces the operation complexity, improves the overall production efficiency, and at the same time, through the setting of the blower, a wind curtain can be formed at both ends of the spraying channel to prevent dust from entering and adhering to the coating, affecting the spraying quality;

[0014] Secondly, through the setting of the feeding assembly, the guardrail can be quickly and accurately sent into the spraying area and quickly removed after spraying, reducing the time of manual operation and improving the speed of the overall production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2This is a cross-sectional view of the overall structure of the present utility model.

[0017] Figure 3 This is a cross-sectional view of the spraying channel structure of the present utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the material storage tank of the present utility model.

[0019] Figure 5 This is a top-down sectional view of the structure of the material inlet cavity of the present utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the clamping frame of the present utility model.

[0021] Figure 7 This is a schematic diagram of the structure of the U-shaped block of the present utility model.

[0022] Figure 1-7 In the figure: 1. Box body; 101. Material inlet cavity; 102. Material discharge cavity; 103. Material outlet cavity; 104. Moving platform a; 105. Moving platform b; 106. Limit groove; 107. Spraying channel; 2. Servo motor; 201. Threaded lead screw; 202. Moving plate; 203. Electric telescopic rod; 204. U-shaped block; 205. Electromagnet a; 3. Clamping frame; 301. Iron block a; 302. Screw rod; 303. Clamping plate; 304. Fixed plate; 4. Electric push rod; 401. Connecting plate; 402. Connecting rod; 403. Iron block b; 404. Electromagnet b; 5. Air cavity; 501. Ventilation net; 502. Fan; 503. Air guiding cavity; 504. Air guiding pipe; 505. Purifier; 6. Placing cavity; 601. Drainage pipe a; 602. Drainage pipe b; 603. U-shaped nozzle; 604. Nozzle; 7. Paint pumping pump; 701. Discharge pipe; 702. Paint suction pipe; 703. Material storage tank. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0024] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0025] An embodiment of the present application provides a guardrail spraying device. Through the setting of the spraying component, this guardrail spraying device can simplify the entire spraying process, and at the same time form air curtains at both ends of the spraying channel to prevent dust from entering. And through the setting of the feeding component, it can quickly and accurately send the guardrail into the spraying area and quickly move it out after spraying, improving the speed of the overall production line.

[0026] The following is a detailed description of this guardrail spraying device. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0027] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Please refer to Figure 1-7 In, a guardrail spraying device provided in this embodiment includes: a box body 1, an inlet cavity 101 is opened inside the box body 1, and a storage tank 703 is provided on the top of the box body 1; a feeding component provided inside the inlet cavity 101 for loading and unloading the guardrail. The feeding component includes a clamping frame 3, an iron block a301, a moving plate 202, an electromagnet a205, and an electric telescopic rod 203. A spraying channel 107 is opened on one side inside the inlet cavity 101. A U-shaped block 204 is provided inside the inlet cavity 101. Two electromagnets a205 are provided at the bottom end of the U-shaped block 204. A moving plate 202 is provided on the top of the box body 1. Two electric telescopic rods 203 are provided on the top of the moving plate 202. A clamping frame 3 is provided inside the inlet cavity 101, and two iron blocks a301 are provided on the top of the clamping frame 3.

[0029] Further, during use, by rotating two lead screws 201 respectively with two servo motors 2, the U-shaped block 204 is moved into the feeding cavity 102, and then the clamping frame 3 is fixed to the U-shaped block 204 through the electromagnet a205. And by rotating two lead screws 201 respectively with two servo motors 2, the clamping frame 3 equipped with the guardrail is moved into the inlet cavity 101. Conversely, the clamping frame 3 equipped with the guardrail can also be moved out of the inlet cavity 101.

[0030] Among them, a discharge cavity 103 is provided on one side of the box body 1. A moving platform a 104 is arranged inside the discharge cavity 103. A feeding cavity 102 is provided on one side of the box body 1. A moving platform b 105 is arranged inside the feeding cavity 102. The discharge cavity 103 and the feeding cavity 102 are communicated through a feeding cavity 101.

[0031] Among them, two servo motors 2 are provided on the top of the box body 1. One side of the two servo motors 2 is connected with a threaded lead screw 201. Two threaded holes matched with the threaded lead screw 201 are provided on one side of the moving plate 202. Two limiting grooves 106 are provided on the top of the box body 1. The bottom ends of the two electric telescopic rods 203 respectively penetrate through the two limiting grooves 106 and are fixedly connected with a U-shaped block 204.

[0032] After the guardrail is clamped, the clamping frame 3 containing the guardrail can be placed on the top of the moving platform b 105. Then, the two servo motors 2 on the top of the box body 1 are started. By rotating the two threaded lead screws 201 respectively through the two servo motors 2, the U-shaped block 204 is driven to move into the feeding cavity 102 through the moving plate 202. Then, the two electric telescopic rods 203 are controlled to extend, driving the U-shaped block 204 and the electromagnet a 205 to move downward until the electromagnet a 205 contacts the iron block a 301. At this time, the two electromagnets a 205 are turned on, so that the electromagnet a 205 and the iron block a 301 are magnetically connected, thereby fixing the clamping frame 3 and the guardrail on the U-shaped block 204. Then, the electric telescopic rod 203 is controlled to drive the U-shaped block 204 to retract until the bottom of the clamping frame 3 is higher than the inner wall bottom of the feeding cavity 101. Then, through the servo motor 2 and the moving plate 202, the clamping frame 3 and the guardrail are moved into the feeding cavity 101, and through the two electric telescopic rods 203, the clamping frame 3 and the guardrail are placed on the inner wall bottom of the feeding cavity 101. At this time, the two electromagnets a 205 are turned off, and the U-shaped block 204 is driven to retract through the electric telescopic rod 203. Then, the electromagnet b 404 can be controlled to retract, driving the connecting plate 401 and the connecting rod 402 to move towards the clamping frame 3, so that the electromagnet b 404 contacts the iron block b 403. The electromagnet 404 is turned on, so that the clamping frame 3 is fixed on one side of the electromagnet 404. Then, the electromagnet 404 is controlled to drive the clamping frame 3 into the spraying channel 107.

[0033] When the guardrail enters the spraying channel 107, the paint pumping pump 7 is turned on to extract the paint inside the storage tank 703, so that the paint enters the diversion pipe b602 and the diversion pipe a601 through the discharge pipe 701 respectively, and is sprayed out from the U-shaped nozzle 603 and the nozzle 604 respectively. When the electromagnet b404 drives the clamping frame 3 to pass through the nozzle 604 and the U-shaped nozzle 603 in sequence, the upper and lower surfaces of the guardrail can be sprayed. After the spraying of the guardrail is completed, the electric push rod 4 can be controlled to retract, and then the clamping frame 3 and the sprayed guardrail are pushed back into the feeding cavity 101, and the electromagnet b404 is turned off to release the magnetic connection between the electromagnet b404 and the iron block b403. At the same time, the two electric telescopic rods 203 are controlled to extend, so that the electromagnet a205 contacts the iron block a301, and the clamping frame 3 and the guardrail are fixed on the electromagnet a205. Then, through the servo motor 2 and the threaded lead screw 201, the clamping frame 3 clamping the guardrail is moved into the feeding cavity 101, and the clamping frame 3 and the guardrail are placed on the moving platform a104 through the electric telescopic rod 203 to complete the blanking of the guardrail.

[0034] Among them, two screw rods 302 are provided at the top of the clamping frame 3, two threaded holes matching the screw rods 302 are opened at the top of the clamping frame 3, two clamping plates 303 are provided at the top of the clamping frame 3, two fixing plates 304 are provided inside the clamping frame 3, an electric push rod 4 is provided inside the box body 1, one end of the electric push rod 4 protrudes from one side of the box body 1 and is fixedly connected with a connecting plate 401, a connecting rod 402 is fixedly connected to one side of the connecting plate 401, an electromagnet b404 is fixedly connected to one end of the connecting rod 402, an iron block b403 is fixedly connected to one side of the clamping frame 3, and the iron block b403 is magnetically connected to the electromagnet b404.

[0035] During use, the operator can take out the clamping frame 3 and the guardrail to be sprayed, place the guardrail on the tops of the two fixing plates 304 inside the clamping frame 3, then pass the screw rod 302 through the holes in the clamping plate 303, place the fixing plate 304 on top of the guardrail, and then screw one end of the screw rod 302 into the threaded hole at the top of the clamping frame 3 to clamp the guardrail through the screw rod 302 and the clamping plate 303.

[0036] Among them, the spraying assembly between the box body 1 and the storage tank 703 includes: a paint pumping pump 7 arranged inside the storage tank 703, a paint pumping pipe 702 is arranged on one side of the paint pumping pump 7, a discharge pipe 701 is connected to one side of the paint pumping pump 7, a placement cavity 6 is opened at the bottom of the inner wall of the spraying channel 107; two air cavities 5 are opened at the top of the inner wall of the spraying channel 107, ventilation nets 501 are arranged inside the two air cavities 5, air blowers 502 are arranged inside the air cavities 5, two air guiding cavities 503 are opened at the bottom of the inner wall of the spraying channel 107, and a purifier 505 is arranged on one side of the box body 1.

[0037] One end of the discharge pipe 701 is connected to a diversion pipe b 602 through a three-way pipe. One end of the diversion pipe b 602 extends into the spraying channel 107 and is connected to a U-shaped nozzle 603. One end of the discharge pipe 701 is connected to a diversion pipe a 601 through a three-way pipe. One end of the diversion pipe a 601 extends into the placement cavity 6 and is connected to a nozzle 604.

[0038] After the guardrail enters the spraying channel 107, start the paint pumping pump 7 to extract the paint inside the storage tank 703, so that the paint enters the diversion pipe b 602 and the diversion pipe a 601 through the discharge pipe 701 respectively, and is sprayed out from the U-shaped nozzle 603 and the nozzle 604 respectively. When the electromagnet b 404 drives the clamping frame 3 to pass through the nozzle 604 and the U-shaped nozzle 603 in sequence, the upper and lower surfaces of the guardrail can be sprayed.

[0039] Among them, the positions of the two air guide cavities 503 correspond to the two air cavities 5. One side of the purifier 505 is connected with two air guide pipes 504, and the two air guide pipes 504 respectively extend into the air guide cavity 503.

[0040] While the guardrail enters the spraying channel 107 for spraying, the fans 502 inside the two air cavities 5 can be started to form a vertically downward air flow at both the inlet and outlet ends of the spraying channel 107. Through the two vertically downward air flows, an air curtain can be formed at both the inlet and outlet ends of the spraying channel 107, so that when the guardrail is sprayed, the paint particles scattered inside the spraying channel 107 and the dust floating into the spraying channel 107 from the outside enter the air guide cavity 503 under the drive of these two air flows, and enter the purifier 505 through the air guide pipe 504 for filtering. At the same time, the air flow at the inlet end of the spraying channel 107 can clean the dust on the surface of the guardrail transferred from the feeding cavity 101 to the spraying channel 107 for spraying, and can also preliminarily air-dry the sprayed guardrail.

[0041] The working principle is as follows:

[0042] During use, the operator can take out the clamping frame 3 and the guardrail to be sprayed, place the guardrail on the tops of the two fixing plates 304 inside the clamping frame 3, then pass the screw 302 through the holes on the clamping plate 303, place the fixing plate 304 on top of the guardrail, and then screw one end of the screw 302 into the threaded hole on the top of the clamping frame 3 to clamp the guardrail through the screw 302 and the clamping plate 303.

[0043] Further, after the guardrail is clamped, the clamping frame 3 with the guardrail can be placed on the top of the moving platform b105. Then, start the two servo motors 2 on the top of the box body 1, and rotate the two threaded lead screws 201 through the two servo motors 2 respectively, so as to drive the U-shaped block 204 to move into the feeding cavity 102 through the moving plate 202. Then, control the two electric telescopic rods 203 to extend, driving the U-shaped block 204 and the electromagnet a205 to move downward until the electromagnet a205 contacts the iron block a301. At this time, turn on the two electromagnets a205 to magnetically connect the electromagnet a205 and the iron block a301, thereby fixing the clamping frame 3 and the guardrail on the U-shaped block 204. Then, control the electric telescopic rod 203 to drive the U-shaped block 204 to retract until the bottom of the clamping frame 3 is higher than the inner wall bottom of the feeding cavity 101. Then, through the servo motor 2 and the moving plate 202, move the clamping frame 3 and the guardrail into the feeding cavity 101, and place the clamping frame 3 and the guardrail on the inner wall bottom of the feeding cavity 101 through the two electric telescopic rods 203. At this time, turn off the two electromagnets a205, and drive the U-shaped block 204 to retract through the electric telescopic rod 203. Then, control the electromagnet b404 to retract, drive the connecting plate 401 and the connecting rod 402 to move towards the clamping frame 3, make the electromagnet b404 contact the iron block b403, turn on the electromagnet 404, fix the clamping frame 3 on one side of the electromagnet 404, and then control the electromagnet 404 to drive the clamping frame 3 into the spraying channel 107.

[0044] After the guardrail enters the spraying channel 107, turn on the paint pumping pump 7 to extract the paint inside the storage tank 703, so that the paint enters the diversion pipe b602 and the diversion pipe a601 through the discharge pipe 701 respectively, and is sprayed out from the U-shaped nozzle 603 and the nozzle 604 respectively. When the electromagnet b404 drives the clamping frame 3 to pass through the nozzle 604 and the U-shaped nozzle 603 in sequence, the upper and lower surfaces of the guardrail can be sprayed. After the spraying of the guardrail is completed, the electric push rod 4 can be controlled to retract, and then the clamping frame 3 and the sprayed guardrail are pushed back into the feeding cavity 101, and the electromagnet b404 is turned off to release the magnetic connection between the electromagnet b404 and the iron block b403. At the same time, control the two electric telescopic rods 203 to extend, make the electromagnet a205 contact the iron block a301, fix the clamping frame 3 and the guardrail on the electromagnet a205, and move the clamping frame 3 with the guardrail into the feeding cavity 101 through the servo motor 2 and the threaded lead screw 201, and place the clamping frame 3 and the guardrail on the moving platform a104 through the electric telescopic rod 203 to complete the blanking of the guardrail.

[0045] In addition, while the guardrail enters the spraying channel 107 for spraying, the fans 502 inside the two air cavities 5 can be turned on to form a vertically downward air flow at both ends of the inlet and outlet of the spraying channel 107. Through the two vertically downward air flows, an air curtain can be formed at both ends of the inlet and outlet of the spraying channel 107. When spraying the guardrail, the paint particles dispersed inside the spraying channel 107 and the dust floating into the spraying channel 107 from the outside are driven by these two air flows into the air guiding cavity 503 and enter the purifier 505 through the air guiding pipe 504 for filtration. At the same time, the air flow at the inlet end of the spraying channel 107 can clean the dust on the surface of the guardrail that is moved from the feeding cavity 101 into the spraying channel 107 for spraying, and can also preliminarily air-dry the sprayed guardrail.

[0046] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0047] The above has introduced in detail a guardrail spraying device provided by an embodiment of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A guardrail spraying device, characterized in that, Comprising: A box body (1), an inlet cavity (101) is formed inside the box body (1), and a storage tank (703) is provided on the top of the box body (1); A feeding assembly arranged inside the inlet cavity (101) for feeding and discharging guardrails. The feeding assembly includes a clamping frame (3), an iron block a (301), a moving plate (202), an electromagnet a (205), and an electric telescopic rod (203). A spraying channel (107) is formed on one side inside the inlet cavity (101). A U-shaped block (204) is arranged inside the inlet cavity (101). Two electromagnets a (205) are provided at the bottom end of the U-shaped block (204). A moving plate (202) is provided on the top of the box body (1). Two electric telescopic rods (203) are provided on the top of the moving plate (202). A clamping frame (3) is arranged inside the inlet cavity (101). Two iron blocks a (301) are provided on the top of the clamping frame (3).

2. The guardrail spraying device according to claim 1, wherein An outlet cavity (103) is formed on one side of the box body (1). A moving platform a (104) is arranged inside the outlet cavity (103). A feeding cavity (102) is formed on one side of the box body (1). A moving platform b (105) is arranged inside the feeding cavity (102). The outlet cavity (103) and the feeding cavity (102) are communicated through the inlet cavity (101).

3. The guardrail spraying device according to claim 1, characterized in that, Two servo motors (2) are provided on the top of the box body (1). A threaded lead screw (201) is connected to one side of the two servo motors (2). Two threaded holes matching with the threaded lead screw (201) are formed on one side of the moving plate (202). Two limiting grooves (106) are formed on the top of the box body (1). The bottom ends of the two electric telescopic rods (203) respectively penetrate through the two limiting grooves (106) and are fixedly connected to the U-shaped block (204).

4. The guardrail spraying device according to claim 1, characterized in that, Two screw rods (302) are provided on the top of the clamping frame (3). Two threaded holes matching with the screw rods (302) are formed on the top of the clamping frame (3). Two clamping plates (303) are provided on the top of the clamping frame (3). Two fixing plates (304) are arranged inside the clamping frame (3). An electric push rod (4) is arranged inside the box body (1). One end of the electric push rod (4) protrudes from one side of the box body (1) and is fixedly connected to a connecting plate (401). A connecting rod (402) is fixedly connected to one side of the connecting plate (401). One end of the connecting rod (402) is fixedly connected to an electromagnet b (404). An iron block b (403) is fixedly connected to one side of the clamping frame (3), and the iron block b (403) is magnetically connected to the electromagnet b (404).

5. The guardrail spraying device according to claim 1, characterized in that, A spraying assembly between the box body (1) and the storage tank (703), the spraying assembly includes: A paint pumping pump (7) arranged inside the storage tank (703). A paint suction pipe (702) is provided on one side of the paint pumping pump (7). A discharge pipe (701) is connected to one side of the paint pumping pump (7). A placing cavity (6) is formed at the bottom of the inner wall of the spraying channel (107); Two air chambers (5) are provided at the top of the inner wall of the spraying channel (107). Ventilation nets (501) are provided inside both of the two air chambers (5), and fans (502) are provided inside the air chambers (5). Two air guiding chambers (503) are opened at the bottom of the inner wall of the spraying channel (107), and a purifier (505) is provided on one side of the box body (1).

6. The guardrail spraying device according to claim 5, characterized in that, One end of the discharge pipe (701) is connected to a diversion pipe b (602) through a tee pipe. One end of the diversion pipe b (602) extends into the interior of the spraying channel (107) and is connected to a U-shaped nozzle (603). One end of the discharge pipe (701) is connected to a diversion pipe a (601) through a tee pipe. One end of the diversion pipe a (601) extends into the interior of the placement chamber (6) and is connected to a nozzle (604).

7. The guardrail spraying device according to claim 5, characterized in that The positions of the two air guiding chambers (503) correspond to those of the two air chambers (5). Two air guiding pipes (504) are connected to one side of the purifier (505), and the two air guiding pipes (504) respectively extend into the interior of the air guiding chambers (503).

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