CN111851245A

CN111851245A - Coating spraying equipment

Info

Publication number: CN111851245A
Application number: CN202010729042.4A
Authority: CN
Inventors: 姚啸云
Original assignee: Individual
Current assignee: Hunan Juxing Composite Products Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-10-30
Anticipated expiration: 2040-07-27
Also published as: CN111851245B

Abstract

The invention discloses a paint spraying device, which belongs to the technical field of paint spraying and comprises a support plate, two mounting plates, two first walking devices, two cleaning devices, a containing stirring device, two second walking devices and a spraying device, wherein the two mounting plates are symmetrically arranged on one side below the support plate, the walking ends of the first walking devices are connected with a road railing, the cleaning devices and the spraying devices are respectively arranged on one mounting plate, the working ends of the cleaning devices and the spraying devices correspond to the road railing, the containing stirring device is arranged on the middle position below the support plate, the spraying devices are connected with the containing stirring device, the second walking devices are arranged on one side of the containing stirring device, and the second walking devices are arranged on the road railing, the efficiency is improved, the operation personnel are facilitated, and the time and the labor are saved.

Description

Coating spraying equipment

Technical Field

The invention relates to the technical field of paint spraying, in particular to paint spraying equipment.

Background

The coating industry belongs to the fine chemical industry, is an important component in national economy, and is rapidly developed at present because the Chinese economy keeps stable and rapid growth. The technical requirement of the coating industry is high, and each manufacturer gradually increases the research and development investment of coating products to improve the technical competitiveness of the manufacturer. In the process of producing the coating, different links such as grinding, dispersing and filling are included, corresponding equipment is matched with each link, the quality of the coating production equipment is very important to the product quality and the production efficiency of the coating, and the sensitivity of the coating to microbial attack depends on the chemical properties of the coating and a solvent, the type of a surface covering object and the exposure condition of a coating film.

A marking machine is a pavement construction machine widely applied to roads, high and whole highways, parking lots, squares and runways and marking out regular limit signs such as guide signs, warning signs and the like on flat ground, but the general marking machine manually drives a machine to mark lines, is troublesome to operate and consumes unnecessary time and strength.

Disclosure of Invention

The invention aims to provide paint spraying equipment to solve the technical problems that in the prior art, marking machines are manually marked, and the marking operation is complicated, time-consuming and labor-consuming by manually driving the machines.

The invention provides coating spraying equipment which comprises a supporting plate, two mounting plates, a first walking device, a cleaning device, a containing and stirring device, a second walking device and a spraying device, wherein the two mounting plates are identical in structure and are L-shaped, the two mounting plates are symmetrically arranged on one side below the supporting plate, the two first walking devices are symmetrically arranged at two ends of the other side of the supporting plate, the walking ends of a plurality of first walking devices are connected with a road rail, the cleaning device and the spraying device are respectively arranged on one mounting plate, the working ends of the cleaning device and the spraying device correspond to the road rail, the containing and stirring device is arranged at the middle position below the supporting plate, and the spraying device is connected with the containing and stirring device, the second walking device is fixedly arranged on one side of the containing and stirring device, and the walking end of the second walking device is positioned on the road rail.

Further, the first walking device comprises a mounting seat, a walking motor, a first belt pulley, a second belt pulley, a belt, a first connecting rod, a second connecting rod, electric push rods and pulleys, the mounting seat is fixedly arranged on a supporting plate, the mounting seat is provided with rectangular holes, the walking motor is fixedly arranged on the mounting seat, the first belt pulley is fixedly arranged on an output shaft of the walking motor, the first connecting rod is fixedly arranged below the mounting plate, the second connecting rods are provided with two groups, one ends of the two groups of second connecting rods are respectively rotatably arranged at two ends of the first connecting rod, the electric push rods are provided with two groups, the two groups of electric push rods are obliquely and symmetrically and fixedly arranged at the outer side of the first connecting rod, the output ends of the two groups of electric push rods are respectively connected with one second connecting rod, the pulleys are provided with three groups, and the pulleys are in a triangular shape and are respectively arranged below the first connecting rod and at the other ends of the two second connecting rods, the second belt pulley is fixedly arranged on a pulley shaft positioned on the first connecting rod, and the belt penetrates through the rectangular hole sleeve and is arranged on the first belt pulley and the second belt pulley.

Further, belt cleaning device includes storage water tank, first water pump, first connecting pipe, second connecting pipe and high-pressure spray gun, storage water tank and first water pump all set up the top at one of them backup pad, the one end of first connecting pipe with the storage water tank is inside to be linked together, the other end of first connecting pipe with the input of first water pump is connected, the one end of second connecting pipe with the output of first water pump is connected, the other end of second connecting pipe with the one end of high-pressure spray gun is connected, the output of high-pressure spray gun with the highway railing corresponds.

Further, splendid attire agitating unit includes coating cylinder, agitator motor, puddler, stirring leaf, charge-in pipeline and ejection of compact pipeline, the coating cylinder runs through to set up on the intermediate position of backup pad, agitator motor sets up the top at the coating cylinder, agitator motor's output shaft runs through the roof of coating cylinder and extends to in the coating cylinder, the puddler sets up on agitator motor's output shaft, the stirring leaf is provided with three groups, three groups the stirring leaf interval sets up on the puddler, charge-in pipeline sets up the top at the coating cylinder, charge-in pipeline communicates with each other rather than coating cylinder is inside, ejection of compact pipeline sets up the one side in coating cylinder below, ejection of compact pipeline communicates with each other rather than coating cylinder is inside, the other end of ejection of compact pipeline is connected spraying device.

Further, the spraying device includes second water pump, third connecting pipe, discharging pipe, support, shower nozzle and second electric putter, the second water pump sets up the top at another mounting panel, the one end of third connecting pipe with the input of second water pump is connected, the other end of third connecting pipe with the discharging pipe is connected, the one end of discharging pipe with the output of second water pump is connected, the support is fixed to be set up on the mounting panel, the other end of discharging pipe runs through the support, the shower nozzle sets up on the other end of discharging pipe, second electric putter is the slope and sets up on the support, second electric putter's output with the shower nozzle is connected.

Further, second running gear includes bottom plate, flexible subassembly and second pulley, the fixed one side that sets up on the coating cylinder of bottom plate, flexible subassembly is fixed to be set up on the bottom plate, the second pulley is fixed to be set up on flexible subassembly, flexible subassembly can drive the second pulley and carry out flexible operation, the second pulley with the highway railing is corresponding.

Further, flexible subassembly includes crossbeam, flexible connecting rod, horizontal pole, flexible push rod and expansion plate, the crossbeam is fixed to be set up on the bottom plate, flexible connecting rod is equipped with two sets ofly, two sets of the one end symmetry of flexible connecting rod sets up on the crossbeam, the both ends of horizontal pole with flexible connecting rod connects, flexible push rod is the slope and fixes setting on the crossbeam, flexible push rod's output with the horizontal pole is connected, the expansion plate is fixed to be set up on the other end of two sets of flexible connecting rods.

Compared with the prior art, the invention has the beneficial effects that:

the road marking machine comprises a marking machine body, a road rail, a support plate, a mounting plate, a first walking device, a cleaning device, a containing and stirring device, a spraying device and a second walking device.

Secondly, the cleaning device is arranged, water in the water storage tank is pumped out through the first connecting pipe by the operation of the first water pump, then the water is conveyed into the high-pressure spray gun through the second connecting pipe, and finally the water is ejected out through the high-pressure spray gun, the high-pressure spray gun controls the dispersion size of the water by controlling the flow of the water outlet nozzle, and the wall surface to be cleaned is sprayed through the high-pressure spray gun, so that the wall surface to be sprayed is clean.

Thirdly, the stirring device is arranged, the coating enters the coating cylinder through the feeding pipeline, the stirring motor can drive the stirring rod to rotate when working, and the stirring rod can drive the stirring blades to rotate, so that the coating is uniformly mixed, the coating is prevented from being precipitated, and the coating is ensured to be sprayed out and uniformly colored.

Fourthly, the second walking device is arranged, the telescopic push rod works to drive the telescopic connecting rod to move up and down, the telescopic connecting rod drives the telescopic plate above, and the telescopic plate drives the second pulley to move up and down to adapt to various wall surfaces.

Fifthly, the angle of the spray head can be adjusted in a small range by arranging the second electric push rod, and the angle of the spray head can be changed according to different surfaces to be sprayed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a first walking device according to the present invention;

FIG. 3 is a schematic view of the cleaning apparatus of the present invention;

FIG. 4 is a schematic structural view of a stirring device of the present invention;

FIG. 5 is a schematic view of the spraying apparatus of the present invention;

fig. 6 is a schematic structural view of a second walking device of the present invention.

Reference numerals: the device comprises a supporting plate 1, a mounting plate 2, a first traveling device 3, a mounting seat 31, a rectangular hole 32, a traveling motor 33, a first belt pulley 34, a second belt pulley 35, a belt 36, a first connecting rod 37, a second connecting rod 38, a first electric push rod 39, a first pulley 310, a cleaning device 4, a water storage tank 41, a first water pump 42, a first connecting pipe 43, a second connecting pipe 44, a high-pressure spray gun 45, a stirring device 5, a paint cartridge 51, a stirring motor 52, a stirring rod 53, a stirring blade 54, a feeding pipeline 55, a discharging pipeline 56, a spraying device 6, a second water pump 61, a third connecting pipe 62, a discharging pipe 63, a bracket 64, a spray head 65, a second electric push rod 66, a second traveling device 7, a bottom plate 71, a telescopic assembly 722, a cross beam 721, a telescopic connecting rod, a cross rod 723, a telescopic push rod 724, a telescopic plate 725, a second pulley 73 and a road rail.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, an embodiment of the present invention provides a paint spraying apparatus, including a supporting plate 1, two mounting plates 2, two first traveling devices 3, two cleaning devices 4, a stirring device 5, a spraying device 6, and a second traveling device 7, where the two mounting plates 2 have the same structure, the two mounting plates 2 are L-shaped, the two mounting plates 2 are symmetrically disposed at one side below the supporting plate 1, the two first traveling devices 3 are disposed at two ends of the other side of the supporting plate 1, the traveling ends of the two first traveling devices 3 are connected to a road rail 8, the cleaning devices 4 and the spraying devices 6 are respectively disposed on one mounting plate 2, and the working ends of the cleaning devices 4 and the spraying devices 6 correspond to the road rail 8, the filling and stirring device 5 is arranged at the middle position below the supporting plate 1, the spraying device 6 is connected with the filling and stirring device 5, the second walking device 7 is fixedly arranged at one side of the filling and stirring device 5, the walking end of the second walking device 7 is positioned on the road rail 8, the whole body can be driven to move on the road rail 8 through the arrangement of the first walking device 3, sundries on the wall surface can be washed through the arrangement of the cleaning device 4, the coating can be stirred and mixed in the moving process of the scribing machine body through the arrangement of the filling and stirring device 5, the condition that the coating is deposited and coated in the coating box for a long time and the coating effect is not uniform is avoided, manual stirring is not needed, and the supporting plate 1 and the components on the mounting plate 2 are prevented from side turning over through the arrangement of the second walking device 7, can automatic spraying go out the marking through setting up of coating unit 6, need not the manual work and carry out the spraying operation once more, solved through setting up of first running gear 3 because among the prior art line printer all is artifical the marking off, artifical drive machine marking off complex operation is wasted time, hard.

The first traveling device 3 comprises a mounting seat 31, a rectangular hole 32, a traveling motor 33, a first belt pulley 34, a second belt pulley 35, a belt 36, a first connecting rod 37, a second connecting rod 38, a first electric push rod 39 and a first pulley 310, the mounting seat 31 is fixedly arranged on the support plate 1, the mounting seat 31 is provided with the rectangular hole 32, the traveling motor 33 is fixedly arranged on the mounting seat 31, the first belt pulley 34 is fixedly arranged on an output shaft of the traveling motor 33, the first connecting rod 37 is fixedly arranged below the mounting plate 2, the second connecting rods 38 are provided with two groups, one ends of the two groups of second connecting rods 38 are respectively and rotatably arranged on two ends of the first connecting rod 37, the first electric push rods 39 are provided with two groups, the two groups of first electric push rods 39 are fixedly arranged on the outer side of the first connecting rod 37 in an inclined symmetrical manner, output ends of the two groups of first electric push rods 39 are respectively connected with the second connecting rod 38, three groups of first pulleys 310 are arranged, the three groups of first pulleys 310 are respectively arranged below the first connecting rod 37 and on the other ends of the two second connecting rods 38 in a triangular shape, the second pulley 35 is fixedly disposed on the first pulley 310 shaft on the first link 37, the belt 36 is sleeved on the first belt pulley 34 and the second belt pulley 35 through the rectangular hole 32, the first belt pulley 34 is driven to rotate by the walking motor 33, the first belt pulley 34 drives the belt 36 to rotate, the belt 36 drives the second pulley 35 to start rotating, the second pulley 35 drives the first link 37, the second link 38 and the first pulley 310 to rotate, the walking operation on the road rail 8 is realized through the mutual matching work of the walking motor 33, the first belt pulley 34, the second belt pulley 35, the belt 36, the first connecting rod 37, the second connecting rod 38 and the first pulley 310.

The cleaning device 4 comprises a water storage tank 41, a first water pump 42, a first connecting pipe 43, a second connecting pipe 44 and a high-pressure spray gun 45, wherein the water storage tank 41 and the first water pump 42 are both arranged above one of the support plates 1, one end of the first connecting pipe 43 is communicated with the inside of the water storage tank 41, the other end of the first connecting pipe 43 is connected with the input end of the first water pump 42, one end of the second connecting pipe 44 is connected with the output end of the first water pump 42, the other end of the second connecting pipe 44 is connected with one end of the high-pressure spray gun 45, the output end of the high-pressure spray gun 45 corresponds to the road rail 8, when the cleaning device 4 starts to work, the first water pump 42 works to pump out water in the water storage tank 41 through the first connecting pipe 43, then conveys the water into the high-pressure spray gun 45 through the second connecting pipe 44, and finally sprays, the high-pressure spray gun 45 controls the dispersion size of water by controlling the flow of the water outlet nozzle, and sprays the wall surface to be cleaned through the high-pressure spray gun 45 to finish the cleaning operation.

The holding and stirring device 5 comprises a coating barrel 51, a stirring motor 52, a stirring rod 53, stirring blades 54, a feeding pipeline 55 and a discharging pipeline 56, wherein the coating barrel 51 is arranged at the middle position of the supporting plate 1 in a penetrating manner, the stirring motor 52 is arranged at the top of the coating barrel 51, an output shaft of the stirring motor 52 penetrates through the top wall of the coating barrel 51 and extends into the coating barrel 51, the stirring rod 53 is arranged on the output shaft of the stirring motor 52, three groups of the stirring blades 54 are arranged on the stirring rod 53 at intervals, the feeding pipeline 55 is arranged at the top of the coating barrel 51, the feeding pipeline 55 is communicated with the interior of the coating barrel 51, the discharging pipeline 56 is arranged at one side below the coating barrel 51, the discharging pipeline 56 is communicated with the interior of the coating barrel 51, the other end of the discharging pipeline 56 is connected with the spraying device 6, when the holding and stirring device 5 works, the coating enters the coating barrel 51 through the feeding pipeline 55, the stirring motor 52 works to drive the stirring rod 53 to rotate, and the stirring rod 53 drives the stirring blade 54 to rotate, so that the stirring operation is completed.

The spraying device 6 comprises a second water pump 61, a third connecting pipe 62, a discharging pipe 63, a bracket 64, a spray head 65 and a second electric push rod 66, the second water pump 61 is arranged above the other mounting plate 2, one end of the third connecting pipe 62 is connected with the input end of the second water pump 61, the other end of the third connecting pipe 62 is connected with the discharging pipe 63, one end of the discharging pipe 63 is connected with the output end of the second water pump 61, the bracket 64 is fixedly arranged on the mounting plate 2, the other end of the discharging pipe 63 penetrates through the bracket 64, the spray head 65 is arranged at the other end of the discharging pipe 63, the second electric push rod 66 is obliquely arranged on the bracket 64, the output end of the second electric push rod 66 is connected with the spray head 65, when the spraying device 6 works, the second water pump 61 works to pump out the coating in the coating barrel 51 through the discharging pipe 56, then the mixture is conveyed into the discharge pipe 63 through the third connecting pipe 62, conveyed into the spray head 65 through the discharge pipe 63, and then sprayed by the spray head 65, and when the second electric push rod 66 works, the spray head 65 can be adjusted in angle in a small range.

Second running gear 7 includes bottom plate 71, flexible subassembly 72 and second pulley 73, the fixed one side that sets up on paint cartridge 51 of bottom plate 71, flexible subassembly 72 is fixed to be set up on bottom plate 71, second pulley 73 is fixed to be set up on flexible subassembly 72, flexible subassembly 72 can drive second pulley 73 and carry out flexible operation, second pulley 73 with highway railing 8 is corresponding.

The telescopic assembly 72 comprises a telescopic beam 721, two groups of telescopic connecting rods 722, a cross rod 723, telescopic push rods 724 and telescopic plates 725, wherein the telescopic beam 721 is fixedly arranged on the bottom plate 71, the telescopic connecting rods 722 are arranged in two groups, one ends of the two groups of telescopic connecting rods 722 are symmetrically arranged on the telescopic beam 721, two ends of the cross rod 723 are connected with the telescopic connecting rods 722, the telescopic push rods 724 are obliquely and fixedly arranged on the telescopic beam 721, the output ends of the telescopic push rods 724 are connected with the cross rod 723, the telescopic plates 725 are fixedly arranged at the other ends of the two groups of telescopic connecting rods 722, when the second walking device 7 works, the telescopic push rods 724 work to drive the telescopic connecting rods 722 to move up and down, the telescopic connecting rods 722 drive the telescopic plates 725 above, and the telescopic plates 725 drive the second pulleys 73 to move up and down to adapt to various wall surfaces.

The working principle of the invention is as follows: in the working state, the walking device drives the first belt pulley 34 to rotate through the walking motor 33, the second belt pulley 35 is driven to rotate through the belt 36, so that the first pulley 310 rotates, the first connecting rod 37, the second connecting rod 38 and the first pulley 310 work in a matching manner, so that the walking device slides forwards, the first electric push rod 39 can push up the arm sections on two sides, so that the first pulley 310 can adapt to various railings, the surface to be washed needs to work through the first water pump 42, the water in the water storage tank 41 is pumped out through the first connecting pipe 43 and is conveyed into the high-pressure spray gun 45 through the second connecting pipe 44, and is finally ejected out through the spray gun high-pressure 45, the high-pressure spray gun 45 controls the dispersion size of the water by controlling the flow of the water outlet nozzle, the wall surface to be washed is sprayed through the high-pressure spray gun 45, the paint enters the paint coating barrel 51 through the feeding pipe 55, the stirring motor 52 works to, puddler 53 can drive stirring leaf 54 and rotate, coating gets into third connecting pipe 62 from ejection of compact pipeline 56, in discharging pipe 63 is carried again to third connecting pipe 62, carry shower nozzle 65 in through discharging pipe 63, spray the operation by shower nozzle 65 again, during second electric putter 66 functions, can be with shower nozzle 65 small-amplitude angle of adjustment, can treat according to the difference that the spraying face changes its angle, work through telescopic push rod 724 and drive telescopic link 722 up-and-down motion, telescopic link 722 drives the expansion plate 725 of top, expansion plate 725 drives second pulley 73 and reciprocates, adapt to various walls.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A paint spraying apparatus characterized by: comprises a supporting plate (1), two mounting plates (2), a first walking device (3), a cleaning device (4), a containing stirring device (5), a spraying device (6) and a second walking device (7), wherein the mounting plates (2) are provided with two mounting plates (2) with the same structure, the two mounting plates (2) are L-shaped, the two mounting plates (2) are symmetrically arranged at one side below the supporting plate (1), the first walking device (3) is provided with two first walking devices (3) which are symmetrically arranged at two ends of the other side of the supporting plate (1), the walking ends of the first walking devices (3) are connected with a road railing (8), the cleaning device (4) and the spraying device (6) are respectively arranged on one mounting plate (2), and the working ends of the cleaning device (4) and the spraying device (6) correspond to the road railing (8), splendid attire agitating unit (5) set up in the intermediate position of backup pad (1) below, spraying device (6) with splendid attire agitating unit (5) are connected, the fixed one side that sets up at splendid attire agitating unit (5) of second running gear (7), the walking end of second running gear (7) is located on highway railing (8).

2. A paint spraying apparatus as claimed in claim 1, wherein: the first walking device (3) comprises a mounting seat (31), rectangular holes (32), a walking motor (33), a first belt pulley (34), a second belt pulley (35), a belt (36), a first connecting rod (37), a second connecting rod (38), a first electric push rod (39) and a first pulley (310), wherein the mounting seat (31) is fixedly arranged on the supporting plate (1), the rectangular holes (32) are formed in the mounting seat (31), the walking motor (33) is fixedly arranged on the mounting seat (31), the first belt pulley (34) is fixedly arranged on an output shaft of the walking motor (33), the first connecting rod (37) is fixedly arranged below the mounting plate (2), the second connecting rod (38) is provided with two groups, one ends of the two groups of second connecting rods (38) are respectively rotatably arranged at two ends of the first connecting rod (37), and the first electric push rods (39) are provided with two groups, two sets of first electric putter (39) become the fixed outside that sets up in first connecting rod (37) of slope symmetry, and are two sets of the output of first electric putter (39) is connected with a second connecting rod (38) respectively, first pulley (310) are equipped with three groups, three groups first pulley (310) are the article style of calligraphy and set up respectively on the below of first connecting rod (37) and the other end of two second connecting rods (38), second pulley (35) are fixed to be set up on first pulley (310) that is located on first connecting rod (37) are epaxial, belt (36) pass rectangular hole (32) cover is established on first pulley (34) and second pulley (35).

3. A paint spraying apparatus as claimed in claim 1, wherein: cleaning device (4) include storage water tank (41), first water pump (42), first connecting pipe (43), second connecting pipe (44) and high-pressure spray gun (45), storage water tank (41) and first water pump (42) all set up the top at one of them backup pad (1), the one end of first connecting pipe (43) with storage water tank (41) inside is linked together, the other end of first connecting pipe (43) with the input of first water pump (42) is connected, the one end of second connecting pipe (44) with the output of first water pump (42) is connected, the other end of second connecting pipe (44) with the one end of high-pressure spray gun (45) is connected, the output of high-pressure spray gun (45) with highway railing (8) correspond.

4. A paint spraying apparatus as claimed in claim 1, wherein: the holding and stirring device (5) comprises a coating barrel (51), a stirring motor (52), a stirring rod (53), stirring blades (54), a feeding pipeline (55) and a discharging pipeline (56), wherein the coating barrel (51) is arranged at the middle position of the supporting plate (1) in a penetrating manner, the stirring motor (52) is arranged at the top of the coating barrel (51), an output shaft of the stirring motor (52) penetrates through the top wall of the coating barrel (51) and extends into the coating barrel (51), the stirring rod (53) is arranged on the output shaft of the stirring motor (52), the stirring blades (54) are provided with three groups, the stirring blades (54) of the three groups are arranged on the stirring rod (53) at intervals, the feeding pipeline (55) is arranged at the top of the coating barrel (51), the feeding pipeline (55) is communicated with the interior of the coating barrel (51), and the discharging pipeline (56) is arranged at one side below the coating barrel (51), the discharging pipeline (56) is communicated with the interior of the coating barrel (51), and the other end of the discharging pipeline (56) is connected with the spraying device (6).

5. A paint spraying apparatus as claimed in claim 1, wherein: the spraying device (6) comprises a second water pump (61), a third connecting pipe (62), a discharge pipe (63), a bracket (64), a spray head (65) and a second electric push rod (66), the second water pump (61) is arranged above the other mounting plate (2), one end of the third connecting pipe (62) is connected with the input end of the second water pump (61), the other end of the third connecting pipe (62) is connected with the discharge pipe (63), one end of the discharge pipe (63) is connected with the output end of the second water pump (61), the bracket (64) is fixedly arranged on the mounting plate (2), the other end of the discharge pipe (63) penetrates through the bracket (64), the spray head (65) is arranged at the other end of the discharge pipe (63), the second electric push rod (66) is obliquely arranged on the bracket (64), the output end of the second electric push rod (66) is connected with the spray head (65).

6. A paint spraying apparatus as claimed in claim 4, wherein: second running gear (7) include bottom plate (71), flexible subassembly (72) and second pulley (73), one side on coating cylinder (51) is fixed to bottom plate (71), flexible subassembly (72) are fixed to be set up on bottom plate (71), second pulley (73) are fixed to be set up on flexible subassembly (72), flexible subassembly (72) can drive second pulley (73) and carry out flexible operation, second pulley (73) with highway railing (8) are corresponding.

7. A paint spraying apparatus as claimed in claim 6, wherein: the telescopic assembly (72) comprises a cross beam (721), telescopic connecting rods (722), a cross rod (723), telescopic push rods (724) and a telescopic plate (725), wherein the cross beam (721) is fixedly arranged on the bottom plate (71), the telescopic connecting rods (722) are provided with two groups, one ends of the telescopic connecting rods (722) are symmetrically arranged on the cross beam (721), two ends of the cross rod (723) are connected with the telescopic connecting rods (722), the telescopic push rods (724) are obliquely and fixedly arranged on the cross beam (721), output ends of the telescopic push rods (724) are connected with the cross rod (723), and the telescopic plate (725) is fixedly arranged at the other end of the two groups of telescopic connecting rods (722).