CN115178408A

CN115178408A - Auxiliary device and method for coating bridge steel structure

Info

Publication number: CN115178408A
Application number: CN202210982687.8A
Authority: CN
Inventors: 李芸
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-10-14

Abstract

The invention relates to the technical field of steel structure coating, in particular to an auxiliary device and method for coating a bridge steel structure. It includes the spraying subassembly, accepts the subassembly, compression subassembly and storage bin, and the spraying subassembly includes the driving disc, installs the backup pad on the driving disc, is provided with the spray gun in the backup pad, and the backup pad is provided with the baffle, accepts the subassembly including accepting the dish, the baffle with accept and be provided with coupling assembling between the dish, accept to install on the dish and scrape the flitch, scrape the flitch and be connected with coupling assembling, it is provided with the movable rod to accept to slide on the dish, the one end of movable rod is connected with and will scrapes the compression subassembly that the paint vehicle that the flitch was derived was accepted. The invention limits the spraying range of the spray gun through the baffle plate, reduces the waste of paint, scrapes the paint with excessive thickness sprayed on the steel structure when the baffle plate rotates, and the paint drops into the bearing disc along with gravity to be collected, thereby solving the problems of the performance reduction and waste of the paint caused by the over-thick paint sprayed on the steel structure at present.

Description

Auxiliary device and method for coating bridge steel structure

Technical Field

The invention relates to the technical field of steel structure coating, in particular to an auxiliary device and method for coating a bridge steel structure.

Background

The existing building bridge is assembled by a plurality of steel structures (a plurality of steel plates or steel columns are combined, and the size of a single steel plate or steel column is short), and for the steel structure of the steel column type, paint is sprayed before use (the paint is sprayed, hereinafter referred to as coating), so that the steel structure has the effects of resisting corrosion, resisting wear and delaying rusting in the subsequent use process.

When the steel construction is being scribbled, through the rectilinear motion of steel construction, the spray gun carries out the application operation of multiposition to the steel construction, but this kind of application has had certain drawback:

when the spray gun sprays paint, the paint can diffuse outwards and then contact the surface of the steel structure, and when the inner diameter size or the width size of the steel structure is small, the sprayed paint range is too large, so that a large amount of paint waste is generated;

along with the larger spraying range of the spray gun, when a certain position of the steel structure is coated for a long time or the part which does not need to be coated is coated for multiple times, the paint on the surface of the steel structure is thicker, so that the paint is wasted, and the surface is easy to generate the conditions of pinholes, bubbles, solvent residues, easy cracking and the like; secondly, the flexibility, impact resistance, high temperature resistance and the like of the paint are also influenced;

and, the paint vehicle on steel construction surface is thick can appear lacquer material and flow the phenomenon of weighing down for the paint vehicle can drip to the external world and can't collect and lead to the waste.

Disclosure of Invention

The invention aims to provide an auxiliary device and method for coating a bridge steel structure, which aim to solve the problems in the background technology.

In order to achieve the above purpose, one object of the present invention is to provide an auxiliary device for coating a bridge steel structure, which comprises a spraying component, a receiving component, a compression component and a storage bin, wherein the spraying component comprises a transmission disc, a support plate is installed on the transmission disc, a spray gun is arranged on the support plate, the spray gun is communicated with the storage bin, baffle plates are arranged on two sides of the support plate close to the spray gun, the baffle plates are used for limiting the paint spraying range of the spray gun and the thickness of paint sprayed on a steel structure, the receiving component comprises a receiving disc, the transmission disc and the receiving disc are both connected through a support plate, a connection component is arranged between the baffle plates and the receiving disc, a scraping plate for scraping paint is installed on the receiving disc, the scraping plate is connected with the connection component through an elastic component, a movable rod is slidably arranged on the receiving disc, one end of the movable rod is connected with the compression component for receiving paint scraped paint, and the paint is compressed into the storage bin when the movable rod moves.

As a further improvement of the technical scheme, the outer side of the transmission disc is of a tooth structure, the transmission disc is driven by the rotating assembly, the rotating assembly comprises a gear which is rotatably arranged on the supporting block plate, the gear is meshed with the transmission disc and driven by the motor.

As the further improvement of this technical scheme, coupling assembling includes that the symmetry installs the guide plate in baffle one end, scrape and install the linking arm on the flitch, the linking arm sets up to two sections bodies of rod of articulated cooperation formula, and connects through interior coupling spring between the body of rod, and two sections side between the body of rod is through outer coupling spring coupling, the elastic force that interior coupling spring and outer coupling spring constitute is less than the elastic component.

As a further improvement of the technical scheme, the elastic element can be made of a spring or an elastic material.

As a further improvement of this technical scheme, accept to offer on the dish and run through the slide of accepting the dish, the movable rod slides in the slide and sets up, the one end of movable rod stretches out along the slide, the other end and the compression subassembly of movable rod are connected, wherein:

install the restriction lever that length is greater than the slide on the movable rod, the restriction lever slides and sets up in accepting the dish, and the both sides of restriction lever are equipped with the rubber strip, and the rubber strip is sealed between with restriction lever and slide.

As a further improvement of the technical scheme, the compression assembly comprises a connecting pipe arranged on the bottom surface of the bearing disc, a paint discharging port communicated with the connecting pipe is formed in the bearing disc, a material storage pipe is communicated with one end of the connecting pipe, a moving part is arranged in the material storage pipe in a sliding mode, the moving rod is used for extruding the moving part to enable the moving part to compress paint in the material storage pipe, one side of the material storage pipe is communicated with the material storage pipe, and a material storage bin communicated with the material storage pipe is arranged on the transmission disc.

As a further improvement of the technical scheme, a one-way valve is arranged on the connecting pipe; and a compression spring is arranged between the moving piece and the material storage pipe.

As a further improvement of the technical scheme, the bottom surface of the receiving plate is provided with a driving assembly, the driving assembly comprises an air cylinder which is arranged on the bottom surface of the receiving plate and used for driving a steel structure to move, and a supporting plate which is sleeved on the outer side of the steel structure is arranged on the air cylinder.

As a further improvement of the technical scheme, the support plate is provided with a limiting assembly, the limiting assembly comprises a fixing plate arranged on one side of the support plate, a limiting block is arranged below the fixing plate, and the fixing plate and the limiting block are connected through a limiting shaft.

As a further improvement of the technical scheme, a limiting spring is further arranged between the fixing plate and the limiting block, and the limiting spring is sleeved outside the limiting shaft.

A second object of the present invention is to provide a coating method used for the auxiliary device for coating a bridge steel structure according to any one of the above, comprising the following steps:

the method comprises the following steps: connecting a steel structure with a cylinder, and driving the steel structure to reach the position of a baffle plate through the cylinder;

step two: the rotating assembly drives the transmission disc to rotate, the spray gun performs multi-position coating on the steel structure when the transmission disc rotates, the baffle limits the spraying range of the spray gun to reduce the loss of paint, and the baffle rotates to scrape the thick surface coated on the steel structure so that the paint drops downwards along the baffle onto the receiving disc to be received;

step three: it scrapes the flitch rotation scraping through the drive disk drive coupling assembling drive and accepts paint vehicle to stock intraductal on the dish to rotate to retrieve in the paint vehicle entering stock storehouse of extrusion movable rod compression stock pipe through scraping the flitch, and scrape the flitch extrusion movable rod and can scrape the paint vehicle scraping of flitch side, when the unable motion of movable rod, scrape the flitch and reset under the effect of elastic component.

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

1. in this bridge steel structure application auxiliary device and method, can restrict the spray regime of paint vehicle when the spray gun spraying through the baffle that sets up, just make the material carry out the small range and spray, some paint vehicle forms the inflation because of the impact and splashes and can adhere to on the baffle, and drop to accepting the dish downwards along the surface of baffle, make the paint vehicle easily collected, and along with the baffle rotates, the baffle is and the adnexed thickness of steel construction painting material of synchronous restriction, and to unnecessary thickness part scraping, the paint vehicle drops to accepting the dish along with gravity and collects, it leads to the performance of paint vehicle low and the paint vehicle is extravagant to solve present steel construction painting material adhesion thickness.

2. According to the auxiliary device and method for coating the bridge steel structure, the connecting assembly can drive the scraping plate to rotate on the bearing disc through rotation of the supporting plate, paint dropped on the bearing disc is scraped, and the paint enters the compression assembly to be borne, so that scattered paint is gathered and recovered.

3. According to the auxiliary device and the method for coating the bridge steel structure, after the scraping plate is driven by the connecting assembly to contact with the movable rod, the movable rod is extruded to slide on the bearing disc, the movable rod scrapes the side surface of the scraping plate, paint remained on the side surface of the scraping plate is removed and enters the compression assembly, and the residual paint on the scraping plate is treated; and when the movable rod slides on the bearing disc, the paint borne in the compression assembly is extruded and conveyed to the spraying assembly, so that the follow-up paint supplement of the spray gun is facilitated.

Drawings

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

FIG. 2 is a second schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the spray assembly, the receiving assembly and the driving assembly of the present invention;

FIG. 4 is a schematic view of the spray assembly of the present invention;

FIG. 5 is a schematic view of the spray assembly and the carrier assembly of the present invention;

FIG. 6 is a schematic view of a receiving assembly according to the present invention;

FIG. 7 is an exploded view of the linking arm structure of the present invention;

FIG. 8 is a schematic view of the movable rod structure of the present invention;

FIG. 9 is a schematic view of the compression assembly of the present invention;

FIG. 10 is a schematic view of a spacing assembly of the present invention;

FIG. 11 is a schematic view of the structure at A of FIG. 10 according to the present invention;

fig. 12 is a flow chart of the coating method of the present invention.

The various reference numbers in the figures mean:

1. a spray assembly; 11. a drive plate; 12. a support plate; 13. a baffle plate; 14. a baffle;

2. a receiving assembly; 21. a bearing plate; 22. a connecting arm; 221. an inner connecting spring; 222. the outer connecting spring; 23. a movable rod; 231. a restraining bar; 24. a scraping plate;

3. a compression assembly; 31. a connecting pipe; 32. a material storage pipe; 33. a moving member; 34. a compression spring;

4. a storage bin;

5. a drive assembly; 51. a cylinder; 52. a support disc;

6. a limiting component; 61. a fixing plate; 62. a limiting block; 621. a limiting shaft; 622. and a limiting spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Example 1

Referring to fig. 1-6, the embodiment provides an auxiliary device for coating a bridge steel structure, which includes a spraying component 1, a receiving component 2, a compressing component 3 and a storage bin 4, wherein the spraying component 1 includes a transmission disc 11, a support plate 12 is installed on the transmission disc 11, a spray gun is installed on the support plate 12 and is communicated with the storage bin 4, in the embodiment, paint is extracted by the spray gun, so that the steel structure sequentially moves upwards along the receiving disc 21 and the transmission disc 11 from bottom to top, the steel structure is uniformly sprayed by the spray gun through the rotation of the transmission disc 11, baffles 13 are installed on two sides of the support plate 12 near the spray gun, the baffles 13 are used for limiting the paint spraying range of the spray gun and the thickness of the paint sprayed on the steel structure, the receiving component 2 includes a receiving disc 21, the transmission disc 11 and the receiving disc 21 are connected by a support plate, and a connecting component is installed between the baffles 13 and the receiving disc 21, the receiving disc 21 is provided with a material scraping plate 24 for scraping paint, the material scraping plate 24 is connected with the connecting assembly, the material scraping plate 24 is connected with the receiving disc 21 through an elastic part, the receiving disc 21 is provided with a movable rod 23 in a sliding manner, one end of the movable rod 23 is connected with a compression assembly 3 for receiving the paint guided out by the material scraping plate 24, the paint received by the compression assembly 3 is compressed into the storage bin 4 when the movable rod 23 moves, furthermore, the spraying range of the paint can be limited when the spray gun sprays through the arranged baffle 13, the material can be sprayed in a small range, part of the paint can be attached to the baffle 13 due to expansion and splash formed by impact and can drop downwards onto the receiving disc 21 along the surface of the baffle 13, the paint is easy to collect, and the baffle 13 synchronously limits the thickness of the paint attached to the steel structure along with the rotation of the baffle 13, the excessive thickness part is scraped, and the paint is dropped to the receiving disc 21 to be collected along with gravity, so that the problems of low performance and paint waste of the paint caused by over-thick paint adhesion on the existing steel structure are solved;

along with the rotation of the support plate 12, the connecting assembly drives the scraping plate 24 to rotate on the bearing disc 21, so that paint dropping on the bearing disc 21 is scraped and enters the compression assembly 3 for bearing, and scattered paint is collected and recycled;

when the connecting assembly drives the scraping plate 24 to contact the movable rod 23, the movable rod 23 is extruded to slide on the bearing disc 21, the movable rod 23 scrapes the side surface of the scraping plate 24, paint remained on the side surface of the scraping plate 24 is removed and enters the compression assembly 3, the residual paint on the scraping plate 24 is treated, and when the movable rod 23 slides on the bearing disc 21, the paint borne in the compression assembly 3 is extruded and conveyed to the spraying assembly 1, so that the follow-up paint supplement of a spray gun is facilitated; secondly, when the movable rod 23 slides on the receiving tray 21 to the maximum extent and cannot move, the connecting assembly no longer drives the scraper plate 24 to move, and the scraper plate 24 is reset through the elastic member.

Wherein, the outside of driving plate 11 is tooth structure, and driving plate 11 passes through the runner assembly drive, and the runner assembly sets up the gear on the backup pad board including rotating, and gear and 11 meshing of driving plate are connected, and the gear passes through motor drive, through motor drive alright drive gear revolve, just makes driving plate 11 rotate and drives backup pad 12 and move, and the spray gun will carry out even application operation to the steel construction.

To further explain the structure of the connection assembly, the connection assembly includes the diversion plate 14 symmetrically installed at one end of the baffle 13, the connecting arm 22 is installed on the scraping plate 24, the connecting arm 22 is set as two segments of rod bodies in a hinged fit type, and the rod bodies are connected through the internal connecting spring 221, and the side surfaces between the two segments of rod bodies are connected through the external connecting spring 222, the elastic force formed by the internal connecting spring 221 and the external connecting spring 222 is smaller than that of the elastic member, through the setting of the diversion plate 14, the paint attached to the end of the baffle 13 is led in downwards, which reduces the condition that the paint is sputtered to the side surface of the baffle 13 and cannot be cleaned, and when the baffle 13 rotates to drive the diversion plate 14 to rotate, the diversion plate 14 will contact the connecting arm 22, because the elastic force formed by the internal connecting spring 221 and the external connecting spring 222 is smaller than that of the elastic member, the diversion plate 14 drives the connecting arm 22 to move, so that the scraping plate 24 rotates to scrape the surface of the receiving plate 21, when the scraping plate 24 cannot press the movable rod 23 to press the connecting arm 22 to make the connecting arm rotate to scrape the paint along the bottom surface of the receiving plate 21 synchronously, and the baffle plate 14, and the connecting arm 22 returns to slide off synchronously, and the connecting arm 22, and the baffle plate 14 rotates to be beneficial to slide down when the baffle plate 14, the baffle plate 14 returns to the connecting arm 14, and the baffle plate 14 returns to be rotated to the connecting arm 14; the elastic member can be made of a spring or an elastic material, and the spring is the same as the inner connecting spring 221 or the outer connecting spring 222, but it is not a common component, so that the connecting assembly can drive the scraper plate 24 to move, and then the scraper plate 24 can be reset by the elastic member.

The bottom surface of the bearing plate 21 is provided with a driving assembly 5, the driving assembly 5 comprises an air cylinder 51 which is arranged on the bottom surface of the bearing plate 21 and used for driving a steel structure to move, a supporting plate 52 which is sleeved on the outer side of the steel structure is arranged on the air cylinder 51, and the air cylinder 51 can drive the steel structure to move by arranging the steel structure in the supporting plate 52, so that the steel structure is uniformly coated; the types of the cylinders 51 are: SC standard cylinder.

Example 2

As shown in fig. 6 and 8, a slide way penetrating through the receiving tray 21 is formed on the receiving tray 21, the movable rod 23 is slidably disposed in the slide way, one end of the movable rod 23 extends out along the slide way, the other end of the movable rod 23 is connected with the compression assembly 3, a limiting rod 231 with a length larger than that of the slide way is mounted on the movable rod 23, the limiting rod 231 is slidably disposed in the receiving tray 21, rubber strips are disposed on two sides of the limiting rod 231, the limiting rod 231 and the slide way are sealed by the rubber strips, the movable rod 23 slides in the slide way to facilitate the matching movement with the scraping plate 24, through the sliding of the limiting rod 231, the sliding stability of the movable rod 23 is improved, paint entering the slide way is blocked, a gap generated according to the arrangement of the rubber strips can be sealed, a good sealing effect is achieved, the paint can be received at an angle of 70 degrees on the receiving tray 21, and the movable rod 23 can be extruded and slid by the scraping plate 24.

Example 3

As shown in fig. 2 and 9, the compressing assembly 3 includes a connecting pipe 31 disposed on the bottom surface of the receiving tray 21, the receiving tray 21 is provided with a paint discharging port communicated with the connecting pipe 31, one end of the connecting pipe 31 is communicated with a storage pipe 32, a moving part 33 is slidably disposed in the storage pipe 32, the moving rod 23 is used for extruding the moving part 33, so that the moving part 33 compresses paint in the storage pipe 32, one side of the storage pipe 32 is communicated with a storage bin 35, the transmission tray 11 is provided with a storage bin 4 communicated with the storage pipe 35, paint enters the connecting pipe 31 through the paint discharging port and is stored in the storage pipe 32, the moving part 33 is moved by the moving rod 23 to extrude the moving part 33, so that the paint stored in the storage pipe 32 can be conveyed to the storage bin 4 through the paint 35, the spray gun is connected with a feeding pipe, the feeding pipe is communicated with the storage bin 4, and the recovered paint can be used; wherein, the motion piece 33 is composed of a rod body and a chock block, and the rod body is connected with the movable rod 23; and the material storage bin 4 is arranged on the supporting plate for use.

Wherein, be provided with the check valve on the connecting pipe 31, the model of check valve is: DXF (6-30) L threaded cartridge, paint can only flow down the connection tube 31 into the stock tube 32, and does not flow back to the connection tube 31 by the extrusion of the mover 33; a compression spring 34 is arranged between the moving part 33 and the material storage pipe 32, and the return of the moving part 33 can be facilitated through the arrangement of the compression spring 34, so that a storage space is formed between the material storage pipe 32 and the moving part 33;

example 4

Referring to fig. 1, 2 and 11, in order to ensure that the driving assembly 5 is stable when conveying the steel structure coating, the supporting plate is provided with the limiting assembly 6, the limiting assembly 6 comprises a fixing plate 61 arranged on one side of the supporting plate, a limiting block 62 is arranged below the fixing plate 61, the fixing plate 61 and the limiting block 62 are connected through a limiting shaft 621, the steel structure can be inserted obliquely between the fixing plate 61 and the transmission disc 11, the top of the steel structure is in contact with the limiting block 62, and thus, the two ends of the steel structure are positioned, so that the steel structure is stable when moving; when the steel structure is long in size, the fixing plate 61 can be clamped on the supporting plate, and the coating of the steel structure is not affected; the limiting shaft 621 adopts an inner rod and an outer rod in a sliding connection mode, and the upward movement coating of a steel structure is facilitated.

Wherein, still be provided with spacing spring 622 between fixed plate 61 and the stopper 62, spacing spring 622 cover is established in spacing axle 621's the outside, through spacing spring 622's elastic connection, can make spacing axle 621 have the restriction compressive force, to the compressing tightly effect preferred of steel construction.

Referring to fig. 12, another object of the present invention is to provide a coating method for the auxiliary device for coating a steel structure of a bridge, which comprises the following steps:

the method comprises the following steps: connecting the steel structure with the cylinder 51, and driving the steel structure to reach the position of the baffle 13 through the cylinder 51;

step two: the transmission disc 11 is driven to rotate through the rotating assembly, when the transmission disc 11 rotates, the spray gun performs multi-position coating on the steel structure, the baffle 13 limits the spraying range of the spray gun to reduce the loss of paint, and the baffle 13 rotates to scrape the thick surface coated on the steel structure, so that the paint drops downwards along the baffle 13 onto the bearing disc 21 to be borne;

step three: rotate through driving disk 11 and drive coupling assembling drive and scrape flitch 24 and rotate and scrape paint vehicle to deposit in the material pipe 32 on the dish 21 is accepted in the scraping to rotate the paint vehicle that extrudees movable rod 23 compression deposit in the material pipe 32 and get into and deposit storehouse 4 through scraping flitch 24 and retrieve, and scrape flitch 24 extrusion movable rod 23 and can scrape the paint vehicle scraping of scraping flitch 24 side, when movable rod 23 can't move, scrape flitch 24 and reset under the effect of elastic component.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a bridge steel construction application auxiliary device, includes spraying assembly (1), accepts subassembly (2), compression subassembly (3) and storage storehouse (4), its characterized in that: the spraying assembly (1) comprises a transmission disc (11), a support plate (12) is installed on the transmission disc (11), a spray gun is arranged on the support plate (12) and is communicated with a storage bin (4), baffle plates (13) are arranged on the two sides, close to the spray gun, of the support plate (12), the baffle plates (13) are used for limiting the range of spraying paint to the spray gun and the thickness of the paint sprayed on a steel structure, the bearing assembly (2) comprises a bearing disc (21), the transmission disc (11) and the bearing disc (21) are connected through support plate plates, a connecting assembly is arranged between the baffle plates (13) and the bearing disc (21), a scraping plate (24) for scraping the paint is installed on the bearing disc (21), the scraping plate (24) is connected with the connecting assembly through an elastic piece, a movable rod (23) is arranged on the bearing disc (21) in a sliding mode, one end of the movable rod (23) is connected with a compression assembly (3) for leading out the paint to bear the paint, and when the movable rod (23) moves, the compression assembly (3) compresses the storage bin (4).

2. The bridge steel structure painting assistance device according to claim 1, characterized in that: the outside of driving plate (11) is tooth structure, driving plate (11) are through the rotating assembly drive, rotating assembly is including rotating the gear that sets up on the support block board, and gear and driving plate (11) meshing are connected, the gear passes through motor drive.

3. The bridge steel structure painting assistance device according to claim 1, characterized in that: coupling assembling installs guide plate (14) in baffle (13) one end including the symmetry, install linking arm (22) on scraping flitch (24), linking arm (22) set up to two sections bodies of rod of articulated cooperation formula, and connect through in-connection spring (221) between the body of rod, and two sections side between the body of rod is connected through outer connection spring (222), the elastic force that interior connection spring (221) and outer connection spring (222) are constituteed is less than the elastic component.

4. The bridge steel structure painting assistance device according to claim 1, characterized in that: accept and offer the slide that runs through and accept dish (21) on dish (21), movable rod (23) slide in the slide and set up, the one end of movable rod (23) stretches out along the slide, the other end and the compression subassembly (3) of movable rod (23) are connected, wherein:

install restriction lever (231) that length is greater than the slide on movable rod (23), restriction lever (231) slide to set up in accepting dish (21), and the both sides of restriction lever (231) are equipped with the rubber strip, and the rubber strip is sealed between with restriction lever (231) and the slide.

5. The bridge steel structure painting auxiliary device according to claim 1, characterized in that: the compression assembly (3) is including setting up connecting pipe (31) accepting dish (21) bottom surface, accept to offer on dish (21) and arrange the lacquer mouth with connecting pipe (31) intercommunication, the one end intercommunication of connecting pipe (31) has material storage pipe (32), it is provided with motion piece (33) to slide in material storage pipe (32), movable rod (23) are used for extrudeing motion piece (33), make motion piece (33) compress the paint vehicle in material storage pipe (32), one side intercommunication of material storage pipe (32) has (35), be provided with on drive plate (11) with storage storehouse (4) of (35) intercommunication.

6. The bridge steel structure painting assistance device according to claim 5, characterized in that: the connecting pipe (31) is provided with a one-way valve; a compression spring (34) is arranged between the moving piece (33) and the material storage pipe (32).

7. The bridge steel structure painting assistance device according to claim 1, characterized in that: the bottom surface of the bearing plate (21) is provided with a driving assembly (5), the driving assembly (5) comprises a cylinder (51) which is arranged on the bottom surface of the bearing plate (21) and used for driving a steel structure to move, and a supporting plate (52) sleeved on the outer side of the steel structure is arranged on the cylinder (51).

8. The bridge steel structure painting assistance device according to claim 1, characterized in that: the supporting plate is provided with a limiting assembly (6), the limiting assembly (6) comprises a fixing plate (61) arranged on one side of the supporting plate, a limiting block (62) is arranged below the fixing plate (61), and the fixing plate (61) and the limiting block (62) are connected through a limiting shaft (621).

9. The bridge steel structure painting auxiliary device according to claim 8, characterized in that: still be provided with spacing spring (622) between fixed plate (61) and stopper (62), the outside at spacing axle (621) is established in spacing spring (622).

10. A painting method used for the bridge steel structure painting assisting device according to any one of the above items 1 to 9, characterized in that: the method comprises the following steps:

the method comprises the following steps: the steel structure is connected with the air cylinder (51), and the air cylinder (51) drives the steel structure to reach the position of the baffle (13);

step two: the rotating assembly drives the transmission disc (11) to rotate, the spray gun performs multi-position coating on the steel structure when the transmission disc (11) rotates, the baffle (13) limits the spraying range of the spray gun to reduce the loss of paint, and the baffle (13) rotates to scrape the thick surface coated on the steel structure so that the paint drops downwards along the baffle (13) to the receiving disc (21) to be received;

step three: the transmission disc (11) rotates to drive the connecting assembly to drive the scraping plate (24) to rotate and scrape paint on the bearing disc (21) to the storage pipe (32), the scraping plate (24) rotates to extrude the movable rod (23) to compress the paint in the storage pipe (32) to enter the storage bin (4) for recycling, the scraping plate (24) extrudes the movable rod (23) to scrape the paint on the side surface of the scraping plate (24), and when the movable rod (23) cannot move, the scraping plate (24) resets under the action of the elastic element.