A concrete prefabricated component anticorrosive paint spraying device

Abstract

This invention relates to a spraying device for anti-corrosion paint on precast concrete components, comprising a spraying frame with a traveling mechanism at the bottom. Multiple atomizing nozzles for spraying the left, right, and top surfaces of the precast concrete components are distributed on the inner wall of the spraying frame. The atomizing nozzles are connected to a paint supply mechanism. A spraying auxiliary mechanism, rotatable in a horizontal plane, is provided at the lower end of the spraying frame for spraying the bottom surface of the precast concrete components. This invention is rationally designed. The traveling mechanism moves the spraying frame through the precast concrete components, allowing for the spraying of anti-corrosion paint on the top, two sides, and bottom surfaces of the precast concrete components in the storage area. Disassembly is not required during the movement, making it convenient and flexible. Simultaneously, the smooth movement of the spraying frame effectively ensures spraying quality, does not affect the precast concrete component production line, saves construction costs, and reduces personnel input.

Description

Technical fields:

[0001] This invention relates to a device for spraying anti-corrosion paint on precast concrete components. Background technology:

[0002] With the vigorous promotion of high-quality, green, and environmentally friendly development in China, precast concrete components are being widely used in infrastructure projects such as waterway engineering, building construction, and bridges. By industrializing and mass-producing precast components in specialized concrete prefabrication yards, the amount of on-site casting work in infrastructure projects is reduced, resources can be fully utilized, quality control can be strengthened, and the standardization of projects can be improved. Concrete prefabrication yards typically have prefabrication and storage areas. To improve the durability and aesthetics of precast components, anti-corrosion paint (coating) spraying is generally required.

[0003] Currently, precast concrete components are mostly coated manually. However, due to space limitations in the storage area of ​​precast concrete yards, it is difficult to coat the bottom surface of precast components in the storage area. Generally, coating is done on-site after installation at the target location. This manual coating method makes it difficult to control quality, especially for anti-corrosion coating of precast components exposed to seawater corrosion. The adhesion and thickness of manually sprayed anti-corrosion paint are often insufficient to meet design requirements, leading to missed areas and rework issues in actual construction. Therefore, there is an urgent need to design a device for spraying anti-corrosion paint onto precast concrete components in the storage area of ​​the precast yard. Summary of the Invention:

[0004] The present invention addresses the problems existing in the prior art, specifically by providing a device for spraying anti-corrosion paint onto precast concrete components.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a precast concrete component anti-corrosion paint spraying device, comprising a spraying frame with a traveling mechanism at the bottom, wherein a plurality of atomizing nozzles for spraying the left, right and top surfaces of the precast concrete component are distributed on the inner side wall of the spraying frame, and the atomizing nozzles are connected to a paint supply mechanism; the lower end of the spraying frame is provided with a spraying auxiliary mechanism that can rotate in the horizontal plane and is used for spraying the bottom surface of the precast concrete component.

[0006] Furthermore, the spraying frame includes a pair of spraying pipes spaced apart at the front and rear and in an inverted U-shape. The pair of spraying pipes are connected by a connecting support. The upper end of the inner wall of each spraying pipe is provided with several top atomizing nozzles evenly distributed at horizontal intervals. The left and right ends of the inner wall of each spraying pipe are provided with several side atomizing nozzles evenly distributed at vertical intervals.

[0007] Furthermore, the spraying auxiliary mechanism includes a pair of oscillating pipe groups distributed front and rear. Each oscillating pipe group includes two horizontally arranged oscillating pipes distributed left and right. Several bottom atomizing nozzles are distributed along the length of the top of each oscillating pipe. A rotating arm is connected to the far end of each of the two oscillating pipes. The rotating arm is rotatably connected to the lower end of the spraying pipe. The rotating arm is driven by a push cylinder to oscillate in the horizontal plane.

[0008] Furthermore, the connecting support includes a pair of upper connecting support rods and a pair of lower connecting support rods distributed vertically. Both the upper and lower connecting support rods are arranged longitudinally. The pushing cylinder is located above the lower connecting support rods. The piston rod end of the pushing cylinder is hinged to the end of the rotating arm away from the swing pipe. The cylinder seat of the pushing cylinder is hinged to the lower connecting support rod.

[0009] Furthermore, the lower ends of the pair of spraying pipes are connected by a pair of left and right distributed brackets; the paint supply mechanism includes a paint tank and an air compressor respectively installed on the upper ends of the pair of brackets, the air compressor being connected to the paint tank, the pair of spraying pipes and the oscillating pipe respectively, so as to deliver the paint in the paint tank to the pair of spraying pipes and the oscillating pipe; the air compressor is also connected to the gas interface of the top atomizing nozzle, the side atomizing nozzle and the bottom atomizing nozzle.

[0010] Furthermore, the traveling mechanism includes a pair of longitudinally moving beams distributed on the left and right sides below the inner side of the spraying pipe. Support beams fixed to the bottom of the spraying pipe are provided above the front and rear ends of the longitudinally moving beams. Lifting brackets and lifting cylinders are distributed inside and outside below the support beams. The lower end of the lifting bracket is provided with a longitudinal groove. The upper end of the longitudinally moving beam is slidably embedded in the longitudinal groove. A longitudinal moving cylinder is provided above the longitudinally moving beam for driving the longitudinally moving beam to slide along the longitudinal groove. The piston rod of the lifting cylinder extends downward and is fixed with a support pad for contacting the ground.

[0011] Furthermore, a pair of inner and outer supporting columns are fixed to the bottom of the supporting beam, and the lifting cylinder is vertically installed at the bottom of the supporting column located at the outer end; the lifting bracket is installed at the bottom of the supporting column located at the inner end; the longitudinal movement cylinder is inclined with a high front end and a low rear end, the cylinder seat of the longitudinal movement cylinder is hinged to a longitudinal movement fixed seat, the longitudinal movement fixed seat is fixedly installed at the rear end of the supporting column located at the inner end, the piston rod of the longitudinal movement cylinder is hinged to a longitudinal movement support, and the longitudinal movement support is detachably connected to the longitudinal moving beam.

[0012] Compared with the prior art, the present invention has the following advantages: The present invention is reasonably designed. The traveling mechanism drives the spraying frame to move and pass through the precast concrete components. Anti-corrosion paint can be sprayed on the top, two sides and bottom of the precast concrete components in the storage area. Moreover, it does not need to be disassembled during the passage, making it convenient and flexible to use. At the same time, the spraying frame moves smoothly, effectively ensuring the spraying quality, without affecting the precast concrete component production line, saving construction costs and reducing personnel input. Attached image description:

[0013] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0014] Figure 2 This is a side view of the structure according to an embodiment of the present invention;

[0015] Figure 3 yes Figure 1 Enlarged diagram of point A in the diagram;

[0016] Figure 4 yes Figure 2 Enlarged diagram of point B in the diagram;

[0017] Figure 5 This is a top view of the structure of an embodiment of the present invention;

[0018] Figure 6 This is a schematic diagram of the spraying auxiliary mechanism in the closed state in an embodiment of the present invention;

[0019] Figure 7 This is a schematic diagram of the spraying auxiliary mechanism in the open state in an embodiment of the present invention;

[0020] Figure 8 This is a schematic diagram of the initial state of the traveling mechanism in an embodiment of the present invention;

[0021] Figure 9 This is a schematic diagram of the extended state of the lifting cylinder of the traveling mechanism in an embodiment of the present invention;

[0022] Figure 10 This is a schematic diagram of the extended state of the longitudinal displacement cylinder of the traveling mechanism in an embodiment of the present invention;

[0023] Figure 11 This is a schematic diagram of the longitudinal moving beam being driven forward by the retraction of the longitudinal moving cylinder of the traveling mechanism in an embodiment of the present invention;

[0024] Figure 12 This is a schematic diagram of the longitudinal moving beam of the traveling mechanism in an embodiment of the present invention reaching the foremost position;

[0025] Figure 13 This is a schematic diagram of the initial state before spraying in an embodiment of the present invention.

[0026] Figure 14 This is a schematic diagram showing the state of the bottom rotating arm being opened during operation in an embodiment of the present invention;

[0027] Figure 15 This is a schematic diagram showing the state of the device moving forward to a position where the rotating arm retracts without interference during operation, according to an embodiment of the present invention.

[0028] Figure 16 This is a schematic diagram of the state of the rotating arm when it retracts during operation in an embodiment of the present invention;

[0029] Figure 17 This is a schematic diagram of the state of the device retracting and retracting to the spraying start position during operation of an embodiment of the present invention;

[0030] Figure 18 This is a schematic diagram showing the state of longitudinal forward and backward spraying during the operation of an embodiment of the present invention;

[0031] Figure 19 This is a schematic diagram showing the state of the device returning to its initial position after spraying is completed in an embodiment of the present invention.

[0032] In the picture:

[0033] 1-Spraying frame; 2-Traveling mechanism; 3-Precast concrete component; 4-Spraying auxiliary mechanism; 5-Spraying pipeline; 6-Top atomizing nozzle; 7-Side atomizing nozzle; 8-Swinging pipeline assembly; 9-Swinging pipeline; 10-Bottom atomizing nozzle; 11-Rotating arm; 12-Pushing cylinder; 13-Upper connecting support rod; 14-Lower connecting support rod; 15-Bracket; 16-Paint can; 17-Air compressor; 18-Longitudinal moving beam; 19-Support beam; 20-Lifting bracket; 21-Lifting cylinder; 22-Longitudinal slide; 23-Longitudinal movement cylinder; 24-Support pad; 25-Support heightening column; 26-Longitudinal movement fixed seat; 27-Longitudinal movement support. Detailed implementation method:

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0036] like Figures 1-3As shown, this invention discloses an anti-corrosion paint spraying device for precast concrete components, comprising a spraying frame 1 with a traveling mechanism 2 at its bottom. Multiple atomizing nozzles for spraying the left, right, and top surfaces of the precast concrete components 3 are distributed on the inner wall of the spraying frame 1. The atomizing nozzles are connected to a paint supply mechanism. A horizontally rotatable spraying auxiliary mechanism 4 is provided at the lower end of the spraying frame 1 for spraying the bottom surface of the precast concrete components 3. By designing the spraying auxiliary mechanism to be horizontally rotatable, interference between the spraying auxiliary mechanism and the support position at the bottom of the precast concrete components is avoided when the spraying frame passes through them, thus preventing interference with normal passage.

[0037] In this embodiment, the spraying frame 1 includes a pair of spraying pipes 5 that are spaced apart at the front and rear and are both inverted U-shaped. The pair of spraying pipes 5 are connected by a connecting support to form a whole. The upper end of the inner wall of each spraying pipe 5 is provided with a number of top atomizing nozzles 6 that are evenly distributed in the horizontal direction. The number of top atomizing nozzles 6 are used to spray the top of the precast concrete component 3. The left and right ends of the inner wall of the spraying pipe 5 are provided with a number of side atomizing nozzles 7 that are evenly distributed in the vertical direction. The number of side atomizing nozzles are used to spray the left and right sides of the precast concrete component 3.

[0038] In this embodiment, the spraying auxiliary mechanism 4 includes a pair of swaying pipe groups 8 distributed front and rear, each swaying pipe 8 corresponding to the position of the spraying pipe 5; the swaying pipe group 8 includes two horizontally arranged swaying pipes 9 distributed left and right, opening and closing towards each other in the horizontal plane; the top of each swaying pipe 9 has several bottom atomizing nozzles 10 distributed along its length, which are used to spray the bottom of the precast concrete component 3; the ends of the two swaying pipes 9 that are far apart are connected to rotating arms 11, which are rotatably connected to the lower end of the spraying pipe 5; each rotating arm 11 is driven by a push cylinder 12 to sway in the horizontal plane. During operation, when entering the precast concrete component 3, the push cylinder 12 extends, and the push cylinder 12 drives the swaying pipe 9 to sway outward through the rotating arm 11, so that the spraying auxiliary mechanism 4 is in the open state. Figure 7 As shown; when it moves to the support position past the bottom of the precast concrete component 3, the hydraulic cylinder 12 is pushed to retract, and the hydraulic cylinder 12 drives the swing pipe 9 to swing inward through the rotating arm 11, so that the spraying auxiliary mechanism 4 is in the closed state, as shown. Figure 6 As shown, the bottom atomizing nozzle is located below the precast concrete component at this time.

[0039] In this embodiment, the connecting support includes a pair of upper connecting support rods 13 and a pair of lower connecting support rods 14 distributed vertically. Both the upper connecting support rods 13 and the lower connecting support rods 14 are arranged longitudinally to connect a pair of spraying pipes 5. The pushing cylinder 12 is located above the lower connecting support rods 14. The piston rod end of the pushing cylinder 12 is hinged to the end of the rotating arm 11 away from the swing pipe 9, and the cylinder seat of the pushing cylinder 12 is hinged to the lower connecting support rod 14.

[0040] In this embodiment, the lower ends of a pair of spraying pipes 5 are connected by a pair of left and right distributed brackets 15; the paint supply mechanism includes a paint tank 16 and an air compressor 17 respectively installed on the upper ends of the pair of brackets 15. The paint tank provides paint (coating) to the entire device, and the air compressor provides high-pressure air power to the entire spraying device. The air compressor is powered by an external power source. Specifically, the air compressor 17 is connected to the paint tank 16, the pair of spraying pipes 5 and the oscillating pipe 9 respectively through hoses to transport the paint in the paint tank 16 to the pair of spraying pipes 5 and the oscillating pipe 9; the air compressor 17 is also connected to the gas interface of the top atomizing nozzle 6, the side atomizing nozzle 7 and the bottom atomizing nozzle 10 to improve the atomization effect of the sprayed paint (coating).

[0041] In this embodiment, all pipe connections are sealed with rubber seals to ensure the pipes are airtight. A pressure test should be performed before use to prevent leaks or other accidents.

[0042] In this embodiment, the traveling mechanism 2 includes a pair of longitudinal moving beams 18 distributed on the left and right sides below the inner side of the spraying pipe 5. Support beams 19 fixed to the bottom of the spraying pipe 5 are provided above the front and rear ends of the longitudinal moving beams 18. Lifting brackets 20 and lifting cylinders 21 are provided below the support beams 19. The lower end of the lifting bracket 20 is provided with a longitudinal groove 22. The upper end of the longitudinal moving beam 18 is slidably embedded in the longitudinal groove 22. A longitudinal moving cylinder 23 is provided above the longitudinal moving beam 18 for driving the longitudinal moving beam 18 to slide along the longitudinal groove 22. The piston rod of the lifting cylinder 21 extends downward and is fixed with a support pad 24 for contacting the ground. During operation, the entire device is lifted by the lifting cylinder 21, and the longitudinal moving beam 18 is hung on the lifting bracket 20. Then, the longitudinal moving cylinder 23 pushes the longitudinal moving beam 18 forward and backward by extending and retracting. When the longitudinal moving beam 18 moves to the front, the lifting cylinder 21 retracts, and the weight of the entire device is supported on the longitudinal moving beam 18. At this time, the lifting cylinder 21 is lifted off the ground, and the longitudinal moving cylinder 23 extends, pushing the entire spraying frame 1 to move along the longitudinal moving beam 18, realizing the alternating forward or backward movement of the longitudinal moving beam 18 and the spraying frame 1, thereby achieving full longitudinal spraying coverage of the entire precast concrete component.

[0043] In this embodiment, the longitudinal moving beam 18 has an I-shaped cross section, and the cross section of the longitudinal sliding groove 22 is adapted to the upper end of the longitudinal moving beam.

[0044] In this embodiment, a pair of inner and outer supporting heightening columns 25 are fixed to the bottom of the supporting beam 19, and the lifting cylinder 21 is vertically installed at the bottom of the supporting heightening column 25 located at the outer end; the lifting bracket 20 is installed at the bottom of the supporting heightening column 25 located at the inner end.

[0045] In this embodiment, the longitudinal displacement cylinder 23 is inclined with a high front end and a low rear end. The cylinder seat of the longitudinal displacement cylinder 23 is hinged to a longitudinal displacement fixed seat 26. The longitudinal displacement fixed seat 26 is fixedly installed at the rear end of the support heightening column 25 located on the inner side. The piston rod of the longitudinal displacement cylinder 23 is hinged to a longitudinal displacement support 27. The longitudinal displacement support is detachably connected to the longitudinal moving beam 18 (for example, by bolt connection).

[0046] In this embodiment, when the traveling mechanism is working, such as Figure 8-12 As shown, it includes the following steps:

[0047] Step S1: The four lifting cylinders 21 at the bottom of the spray frame 1 are lifted, and the entire spray frame 1 is lifted. Then, the longitudinal moving beam 18 is slidably embedded in the longitudinal groove 22 of the lifting bracket 20. At this time, the longitudinal moving beam 18 is in a suspended state.

[0048] Step S2: The longitudinal cylinder 23 extends, causing the longitudinal support 27 to move backward relative to the longitudinal moving beam 18 by a certain position, and then the longitudinal support 27 is connected and fixed to the longitudinal moving beam 18.

[0049] Step S3: The longitudinal cylinder 23 retracts, and the longitudinal cylinder 23 drives the longitudinal moving beam 18 to move forward along the longitudinal slide 22 through the longitudinal support 27. Then the longitudinal support 27 is separated from the longitudinal moving beam 18.

[0050] Step S4: Repeat steps S2-S3 several times to move the longitudinal moving beam 18 to the front. Then, the lifting cylinder 21 retracts, causing the support pad 24 to detach from the bottom surface, and the entire spraying frame 1 presses on the longitudinal moving beam 18.

[0051] Step S5: The longitudinal displacement cylinder 23 extends, pushing the spraying frame 1 forward along the longitudinal moving beam 18; then the longitudinal displacement support 27 is separated from the longitudinal moving beam 18, the longitudinal displacement cylinder 23 retracts, driving the longitudinal displacement support 27 to move forward a distance relative to the longitudinal moving beam 18; finally, the longitudinal displacement support 27 is connected and fixed to the longitudinal moving beam 18, the longitudinal displacement cylinder 23 extends, and continues to push the spraying frame 1 forward along the longitudinal moving beam 18.

[0052] The longitudinal moving beam and the spraying frame move forward or backward alternately, repeating this process to achieve full longitudinal spraying coverage of the entire spraying device.

[0053] In this embodiment, as Figure 13-19 As shown, the movement process of the spraying device is as follows:

[0054] (1) The entire spraying device is in the preparation stage. The spraying device is located at the end of the concrete precast component along the length direction, and the longitudinal moving beam is parallel to the length direction of the concrete precast component.

[0055] (2) The spraying device opens its rotating arm to prepare to enter the precast concrete component;

[0056] (3) The rotating arm opens, and the traveling mechanism proceeds as follows: Figure 8-12 The process involves moving forward into the interior of the precast concrete component;

[0057] (4) The rotating arm retracts, and the entire spraying device moves back to the starting position of spraying;

[0058] (5) Start spraying, the traveling mechanism moves forward and back and forth twice;

[0059] (6) After the spraying is completed, the entire spraying device returns to its initial position.

[0060] The advantages of the present invention are: (1) By setting up a traveling mechanism, the spraying device can achieve unmanned anti-corrosion paint spraying before the installation of precast concrete components, ensuring the quality of spraying, saving labor costs, not affecting the precast concrete component production line, saving construction costs, and reducing personnel input; at the same time, the spraying device has the characteristics of simple construction, quick installation and dismantling, and reusability.

[0061] 2. The traveling mechanism eliminates the need for tracks, ensuring smooth movement. The rotating spraying auxiliary mechanism opens the swing pipe to bypass the supports at both ends of the bottom of the precast concrete component, allowing direct spraying between the support points. The device is easy to install, dismantle, and use, and is highly flexible.

[0062] 2. It avoids the problem of spraying anti-corrosion paint on the concrete precast components after installation. On-site spraying quality is difficult to control. After installation, some parts of the concrete precast components are difficult to spray with anti-corrosion paint (coating) due to space constraints, resulting in problems such as missed spraying or low-quality spraying.

[0063] 3. The front and rear distributed spraying pipeline loops improve the uniformity of anti-corrosion paint (coating) spraying, allow for precise control of paint (coating) usage, and reduce waste of anti-corrosion paint (coating).

[0064] If this invention discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0065] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0066] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A device for spraying anti-corrosion paint on precast concrete components, characterized in that: The system includes a spraying frame with a traveling mechanism at the bottom, and multiple atomizing nozzles distributed on the inner sidewalls of the spraying frame for spraying the left, right and top surfaces of precast concrete components. The atomizing nozzles are connected to a paint supply mechanism. The lower end of the spraying frame is equipped with a spraying auxiliary mechanism that can rotate in the horizontal plane and is used for spraying the bottom surface of the precast concrete components. The spraying frame includes a pair of spraying pipes that are spaced apart at the front and rear and are in an inverted U-shape. The pair of spraying pipes are connected by a connecting support. The upper end of the inner wall of each spraying pipe is provided with several top atomizing nozzles that are evenly distributed in the horizontal direction. The left and right ends of the inner wall of each spraying pipe are provided with several side atomizing nozzles that are evenly distributed in the vertical direction. The spraying auxiliary mechanism includes a pair of swing pipe groups distributed in front and rear. Each swing pipe group includes two swing pipes distributed horizontally and arranged in a left-right manner. Several bottom atomizing nozzles are distributed along the length of the top of each swing pipe. A rotating arm is connected to the far end of each of the two swing pipes. The rotating arm is rotatably connected to the lower end of the spraying pipe. The rotating arm is driven by a push cylinder to swing in the horizontal plane. The connecting support includes a pair of upper connecting support rods and a pair of lower connecting support rods distributed vertically. Both the upper and lower connecting support rods are arranged longitudinally. The pushing cylinder is located above the lower connecting support rods. The piston rod end of the pushing cylinder is hinged to the end of the rotating arm away from the swing pipe. The cylinder seat of the pushing cylinder is hinged to the lower connecting support rod. The traveling mechanism includes a pair of longitudinally moving beams distributed on the left and right sides below the inner side of the spraying pipe. Support beams fixed to the bottom of the spraying pipe are provided above the front and rear ends of the longitudinally moving beams. Lifting brackets and lifting cylinders are distributed inside and outside below the support beams. The lower end of the lifting bracket is provided with a longitudinal groove. The upper end of the longitudinally moving beam is slidably embedded in the longitudinal groove. A longitudinal moving cylinder is provided above the longitudinally moving beam for driving the longitudinally moving beam to slide along the longitudinal groove. The piston rod of the lifting cylinder extends downward and is fixed with a support pad for contacting the ground. The bottom of the support beam is fixed with a pair of inner and outer supporting columns. The lifting cylinder is vertically installed at the bottom of the outer supporting column. The lifting bracket is installed at the bottom of the inner supporting column. The longitudinal moving cylinder is inclined with a high front end and a low rear end. The cylinder seat of the longitudinal moving cylinder is hinged to a longitudinal moving fixed seat. The longitudinal moving fixed seat is fixedly installed at the rear end of the inner supporting column. The piston rod of the longitudinal moving cylinder is hinged to a longitudinal moving support. The longitudinal moving support is detachably connected to the longitudinal moving beam.

2. The concrete precast member anticorrosive paint spraying device according to claim 1, characterized in that: The lower ends of a pair of spraying pipes are connected by a pair of left and right brackets; the paint supply mechanism includes a paint tank and an air compressor respectively installed on the upper ends of the pair of brackets, the air compressor being connected to the paint tank, the pair of spraying pipes and the oscillating pipe respectively, to deliver the paint in the paint tank to the pair of spraying pipes and the oscillating pipe; the air compressor is also connected to the gas interface of the top atomizing nozzle, the side atomizing nozzle and the bottom atomizing nozzle.

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