Protective layer spraying device for steel beam corrosion prevention

Abstract

The invention provides a protective layer spraying device for steel beam corrosion prevention, and relates to the technical field of spraying type corrosion prevention tanks, the protective layer spraying device comprises a vertical plate, and the interior of the vertical plate is slidably connected with a liquid collection assembly; the multi-stage driving assembly comprises a first mounting base fixedly connected to the vertical plate, the top end of the first mounting base is fixedly connected with a motor, the driving end of the motor is fixedly connected with a speed reducer, and one end of the speed reducer is fixedly connected with a lead screw; by means of the design, the movement speed of the moving block can be adjusted through multi-stage transmission, the first rotating wheel connected with the lead screw is kept at the normal rotating speed, the last third rotating wheel rotates slowly, it is ensured that the spraying device can move at the proper speed, and anti-corrosion paint is comprehensively and evenly sprayed to the surface of a steel beam; and compared with the problem of uneven spraying caused by manual handheld paint spraying machine in part of the prior art, unstable factors of manual operation can be avoided, and the spraying uniformity and quality of the anticorrosive paint on the surface of the steel beam are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spray-type anticorrosive tanks, and particularly to a protective layer spraying device for steel beam anticorrosion. Background Art

[0002] A steel beam is a beam made of steel. The crane beams and working platform beams in a factory building, the floor beams in a multi-story building, and the purlins in a roof structure, etc., can all adopt steel beams. Steel beams are divided into section steel beams and composite beams. Section steel beams are made of hot-rolled I-beams or channel steels, etc. Light beams such as purlins can also adopt cold-formed Z-shaped steels and channel steels. Section steel beams are simple to process and have a relatively low cost;

[0003] However, the cross-sectional dimensions of section steel are restricted by certain specifications. A composite beam is formed by welding or riveting steel plates or section steels. Since riveting is laborious and material-consuming, welding is usually the main method. In order to prevent the steel beam from corrosion, the surface of the steel beam usually needs to be sprayed.

[0004] Currently, when spraying a steel beam, most of the time the steel beam is fixed, and then the nozzle of a paint spraying machine is held manually to spray the anticorrosive coating on the steel beam, which easily leads to uneven spraying of the steel beam. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies in the prior art and provide a protective layer spraying device for steel beam anticorrosion, including a vertical plate, and a liquid collection assembly is slidably connected inside the vertical plate;

[0006] A multi-stage drive assembly, the multi-stage drive assembly includes a mounting seat one fixedly connected to the vertical plate, a motor is fixedly connected to the top of the mounting seat one, a reducer is fixedly connected to the driving end of the motor, a lead screw is fixedly connected to one end of the reducer, a runner one is fixedly connected to the end of the lead screw away from the moving block, a runner two is rotatably connected to one end of the vertical plate close to the runner one, and a runner three is rotatably connected to the bottom end of the side of the vertical plate close to the runner one;

[0007] A spraying assembly, the spraying assembly includes a moving block threadedly connected to the lead screw, a liquid storage tank is fixedly connected to the top of the moving block, an infusion pipe is fixedly connected inside the liquid storage tank, a booster pump is fixedly connected to the end of the infusion pipe away from the liquid storage tank, a hose is fixedly connected to the output end of the booster pump, a spray pipe is fixedly connected to the end of the hose away from the booster pump, and a limiting assembly is threadedly connected to the outside of the spraying assembly;

[0008] The clamping and rotating assembly, the clamping and rotating assembly includes a rotating column fixedly connected to the third rotating wheel, one end of the rotating column is fixedly connected with a threaded column, the outside of the threaded column is threadedly connected with an adjusting column, one end of the adjusting column is fixedly connected with a second mounting seat, and a second cylinder is installed inside the second mounting seat. The driving end of the second cylinder is fixedly connected with a clamping plate.

[0009] Preferably, the limiting assembly includes a support plate fixedly connected to the bottom end of the liquid storage tank, a support bottom plate is fixedly connected to the bottom end of the moving block, a first limiting column is slidably connected inside the support bottom plate, and a second limiting column is slidably connected inside the support plate.

[0010] 3. The protective layer spraying device for steel beam anti-corrosion according to claim 2, wherein: both ends of the first limiting column are fixedly connected to the inner side of the vertical plate, and both ends of the second limiting column are fixedly connected to the inner side of the vertical plate.

[0011] Preferably, the liquid collection assembly includes a collection frame slidably connected to the inner wall of the vertical plate, a clamping block is fixedly connected to one side of the collection frame, a pull rod is fixedly connected to the outside of the clamping block, a clamping column is slidably connected to the outside of the pull rod, and a spring is arranged inside the clamping column.

[0012] Preferably, the outside of the clamping column is fixedly connected to the inner wall of the vertical plate, one end of the spring is fixedly connected to the pull rod, and the other end of the spring is fixedly connected to the inner wall of the spring.

[0013] Preferably, belts are sleeved on the outside of the lead screw and the third rotating wheel, and the ends of the belt away from the lead screw and the third rotating wheel are sleeved on the second rotating wheel.

[0014] Preferably, the top end of the spray pipe is fixedly connected with a first cylinder, and the top end of the first cylinder is fixedly connected to the bottom end of the support bottom plate.

[0015] Preferably, the bottom end of the booster pump is fixedly connected to the top end of the support bottom plate.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0017] 1. The motor provides rotational power, and after the speed is reduced and the torque is increased by the reducer, the screw is driven to rotate. The screw drives the first wheel to rotate. The first wheel is connected to the second wheel and the third wheel through a belt to form a multi-stage transmission system, which drives the moving block to move linearly in a specific direction. This design can adjust the movement speed of the moving block through multi-stage transmission, so that the first wheel connected to the screw can maintain a normal speed, and the last wheel three can achieve a slower rotation, ensuring that the spraying device can move at a suitable speed, so that the anti-corrosion coating can be sprayed comprehensively and evenly on the surface of the steel beam. Compared with the uneven spraying caused by manual hand-held sprayers in some existing technologies, it can avoid the instability of manual operation and improve the uniformity and quality of anti-corrosion coating spraying on the surface of the steel beam.

[0018] 2. The threaded moving block is driven to move in a straight line along the axial direction by the rotation of the screw rod. The moving block drives the liquid storage tank and the spray assembly to move synchronously. The anti-corrosion paint in the liquid storage tank is transported to the booster pump through the infusion tube for pressurization. The high-pressure paint is sprayed out evenly from the nozzle through the hose. At the same time, the cylinder 1 can adjust the up and down position of the nozzle. The limit column 1 and the limit column 2 are respectively connected by the sliding of the support bottom plate and the support plate to limit the movement trajectory of the moving block to a straight line. This design realizes the stable straight line movement of the spray assembly along the surface of the steel beam, the adjustable height of the nozzle and the controllable pressure of the paint, ensuring that the distance between the nozzle and the surface of the steel beam and the spraying pressure are constant, and the movement trajectory has no deviation.

[0019] 3. The rotating column is driven to rotate by the rotating wheel three, and the rotating column drives the threaded column to rotate synchronously. The threaded connection between the threaded column and the adjusting column enables the adjusting column to move axially, thereby adjusting the position of the mounting seat two and the clamping plate; the cylinder two drives the clamping plate to clamp the steel beam, and at the same time, the rotation of the rotating wheel three is transmitted to the clamped steel beam through the rotating column to realize the rotation of the steel beam; this design can accurately adjust the distance between the clamping plates according to the size of the steel beam through the adjusting column, and the cylinder two provides a stable clamping force to prevent the steel beam from shifting, and cooperates with the rotation of the rotating wheel three to drive the steel beam to rotate, so that the spraying component can evenly spray all surfaces of the steel beam. Compared with the problem of uneven spraying caused by the steel beam being fixed and the nozzle being moved manually in some existing technologies during manual spraying, the steel beam is fixed by mechanical clamping and made to rotate controllably, combined with the linear movement of the spraying component, the steel beam surface is sprayed without dead angles, and the uneven coating defects caused by the loose fixation of the steel beam or the single spraying angle in manual operation are avoided;

[0020] 4. Pull the rod to drive the block to overcome the spring tension and detach from the column, so that the collection frame slides out along the inner wall of the vertical plate. When spraying, release the rod, and the spring resets to drive the collection frame to fit the inner wall of the vertical plate, automatically collecting excess paint dripping during the spraying process and liquid thrown out when the steel beam rotates. This design realizes the automatic collection and convenient cleaning of spray waste liquid. The cooperation of the spring and the column ensures that the collection frame resets and fits in the non-working state without affecting the spraying operation. It can stably receive the dripping liquid during operation, which is convenient for subsequent centralized treatment and recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of a protective layer spraying device for steel beam anti-corrosion provided by the present invention;

[0022] Figure 2 A schematic structural view of a vertical plate of a protective layer spraying device for steel beam anti-corrosion provided by the present invention;

[0023] Figure 3 A schematic structural view of a multi-stage driving assembly of a protective layer spraying device for steel beam anti-corrosion provided by the present invention;

[0024] Figure 4 is Figure 1 The enlarged view at A in

[0025] Figure 5 A schematic structural view of a spraying assembly of a protective layer spraying device for steel beam anti-corrosion provided by the present invention;

[0026] Figure 6 A schematic structural view of a clamping and rotating assembly of a protective layer spraying device for steel beam anti-corrosion provided by the present invention;

[0027] Figure 7 A schematic structural view of a liquid collection assembly of a protective layer spraying device for steel beam anti-corrosion provided by the present invention.

[0028] 1. Vertical plate;

[0029] 2. Multi-stage driving assembly; 21. First mounting seat; 22. Motor; 23. Reducer; 24. Lead screw; 25. First runner; 26. Second runner; 27. Third runner; 28. Belt;

[0030] 3. Spraying assembly; 31. Moving block; 32. Liquid storage tank; 33. Liquid delivery pipe; 34. Booster pump; 35. Hose; 36. Spray pipe; 37. First cylinder;

[0031] 4. Limiting assembly; 41. Support plate; 42. Support bottom plate; 43. First limiting post; 44. Second limiting post;

[0032] 5. Clamping and rotating assembly; 51. Rotating column; 52. Threaded column; 53. Adjusting column; 54. Second mounting seat; 55. Second cylinder; 56. Clamping plate;

[0033] 6. Liquid collection assembly; 61. Collection frame; 62. Clamping block; 63. Pull rod; 64. Clamping post; 65. Spring. DETAILED DESCRIPTION OF THE INVENTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] As Figure 1 shown in Figure 3 this embodiment provides a technical solution: a protective layer spraying device for steel beam anti-corrosion, including a vertical plate 1;

[0036] A multi-stage drive assembly 2, the multi-stage drive assembly 2 includes a mounting seat one 21 fixedly connected to the vertical plate 1, the top of the mounting seat one 21 is fixedly connected with a motor 22, the driving end of the motor 22 is fixedly connected with a reducer 23, one end of the reducer 23 is fixedly connected with a lead screw 24, the end of the lead screw 24 far from the moving block 31 is fixedly connected with a runner one 25, one end of the vertical plate 1 close to the runner one 25 is rotatably connected with a runner two 26, and one side bottom end of the vertical plate 1 close to the runner one 25 is rotatably connected with a runner three 27. The outer sides of the lead screw 24 and the runner three 27 are both sleeved with a belt 28, and the end of the belt 28 far from the lead screw 24 and the runner three 27 is sleeved on the runner two 26;

[0037] The vertical plate 1 is the support structure of the whole device, providing stable mechanical support to ensure that the device will not deform or shift due to vibration or external force during operation. The mounting seat one 21 provides a firm mounting foundation to prevent the motor 22 from loosening or shifting due to vibration during operation. The motor 22 is the power source of the device, providing rotational power to ensure the operation efficiency of the device. The reducer 23 is used to reduce the speed of the motor 22 and increase the torque at the same time, converting the high-speed rotation of the motor 22 into a low-speed, high-torque output. The lead screw 24 converts the rotational motion into a linear motion, driving the moving block 31 to move in a specific direction. The runner one 25, the runner two 26 and the runner three 27 are connected by the belt 28 to form a multi-stage transmission system for adjusting the transmission ratio and the movement speed. By setting the diameter ratio of the runner one 25, the runner two 26 and the runner three 27 to 1:2:3, different transmission ratios can be achieved, thereby adjusting the movement speed of the moving block 31, so that the runner one 25 connected to the lead screw 24 can maintain the normal rotation speed required by the lead screw 24, and the last runner three 27 can achieve a slower rotation, thereby ensuring that the spraying can be comprehensively sprayed on the surface of the workpiece. The belt 28 is used to connect the runner one 25, the runner two 26 and the runner three 27 to achieve the purpose of multi-stage transmission;

[0038] As Figure 1 shown in Figure 3 shown in Figure 4 shown in Figure 5As shown, there is a spraying assembly 3. The spraying assembly 3 includes a moving block 31 threadedly connected to the lead screw 24. The top end of the moving block 31 is fixedly connected to a liquid storage tank 32. An infusion pipe 33 is fixedly connected inside the liquid storage tank 32. One end of the infusion pipe 33 away from the liquid storage tank 32 is fixedly connected to a booster pump 34. The output end of the booster pump 34 is fixedly connected to a flexible hose 35. One end of the flexible hose 35 away from the booster pump 34 is fixedly connected to a spray pipe 36. The top end of the spray pipe 36 is fixedly connected to a cylinder 37. The top end of the cylinder 37 is fixedly connected to the bottom end of the support base plate 42;

[0039] The moving block 31 is threadedly connected to the lead screw 24. As the moving platform of the spraying assembly 3, it bears other spraying-related components and moves linearly along the rotation direction of the lead screw 24. The threaded connection ensures that the movement trajectory of the moving block 31 along the lead screw 24 is stable and accurate, enabling it to accurately align with the surface of the steel beam. The liquid storage tank 32 is used to store the anti-corrosion coating, providing a stable coating supply for the spraying operation. The capacity design of the liquid storage tank 32 ensures the continuity of the coating supply during the spraying operation, reducing the trouble of frequent feeding. The liquid storage tank 32 is fixed on the moving block 31 and moves with the moving block 31, facilitating spraying at different positions. The infusion pipe 33 connects the liquid storage tank 32 and the booster pump 34, used to transport the anti-corrosion coating from the liquid storage tank 32 to the booster pump 34. The booster pump 34 is used to increase the pressure of the coating, enabling the coating to be evenly sprayed onto the surface of the steel beam through the flexible hose 35 and the spray pipe 36, avoiding missed spraying or uneven spraying. The booster pump 34 can adjust the pressure according to the viscosity of the coating and the spraying requirements, adapting to different types of anti-corrosion coatings. The flexible hose 35 connects the booster pump 34 and the spray pipe 36, used to transport the high-pressure coating from the booster pump 34 to the spray pipe 36. The spray pipe 36 is the outlet for coating spraying, and the high-pressure coating is evenly sprayed onto the surface of the steel beam through the nozzle. The cylinder 37 is used to fix the spray pipe 36 and provide the up and down movement function of the spray pipe 36, ensuring that the spray pipe 36 can be adjusted according to the height and shape of the steel beam, ensuring the stability of the spray pipe 36 during the spraying process and avoiding uneven spraying caused by vibration;

[0040] As Figure 4 shown Figure 5 As shown, a limiting assembly 4 is threadedly connected to the outside of the spraying assembly 3. The limiting assembly 4 includes a support plate 41 fixedly connected to the bottom end of the liquid storage tank 32. The bottom end of the moving block 31 is fixedly connected to a support base plate 42. The bottom end of the booster pump 34 is fixedly connected to the top end of the support base plate 42. A limiting column 43 is slidably connected inside the support base plate 42. A limiting column 44 is slidably connected inside the support plate 41. Both ends of the limiting column 43 are fixedly connected to the inner side of the vertical plate 1. Both ends of the limiting column 44 are fixedly connected to the inner side of the vertical plate 1;

[0041] The support plate 41 is fixedly connected to the bottom end of the liquid storage tank 32 and is used to install and fix the second limiting post 44, providing stable support for the second limiting post 44 to ensure that the second limiting post 44 remains stable during the operation of the device, preventing the second limiting post 44 from loosening or shifting due to vibration or external force. The support bottom plate 42 is fixedly connected to the bottom end of the moving block 31, serving as the installation base for the booster pump 34. At the same time, a first limiting post 43 is slidably connected inside it, which is used to limit the movement track of the moving block 31. The first limiting post 43 is fixedly connected to the inner side of the vertical plate 1. By being slidably connected inside the support bottom plate 42, it is used to limit the movement track of the moving block 31, ensuring that the moving block 31 moves linearly along the axial direction of the lead screw 24, preventing the moving block 31 from deviating or shaking during the movement, and ensuring the accuracy of the spraying operation. The second limiting post 44 is fixedly connected to the inner side of the vertical plate 1. By being slidably connected inside the support plate 41, it is used to limit the movement track of the moving block 31, ensuring that the moving block 31 moves linearly along the axial direction of the lead screw 24;

[0042] As Figure 1 shown in Figure 6 FIG. [FIGURE NUMBER], the clamping and rotating assembly 5 includes a rotating column 51 fixedly connected to the third runner 27. One end of the rotating column 51 is fixedly connected with a threaded column 52. The outside of the threaded column 52 is threadedly connected with an adjusting column 53. One end of the adjusting column 53 is fixedly connected with a second mounting seat 54. Inside the second mounting seat 54, a second cylinder 55 is installed. The driving end of the second cylinder 55 is fixedly connected with a clamping plate 56;

[0043] The rotating column 51 is fixedly connected to the third runner 27 and serves as the rotating shaft of the clamping and rotating assembly 5, transmitting the rotating motion of the third runner 27, so that the rotating column 51 transmits the rotating motion of the third runner 27 to the subsequent threaded column 52, ensuring that the clamping and rotating assembly 5 can rotate synchronously. The threaded column 52 is fixedly connected to one end of the rotating column 51 and is threadedly connected with the adjusting column 53 to adjust the position of the adjusting column 53. The adjusting column 53 is threadedly connected to the outside of the threaded column 52 to adjust the position of the second mounting seat 54, thereby changing the distance between the clamping plate 56 and the steel beam. When holding the adjusting column 53, it serves a limiting purpose, so that when the threaded column 52 rotates, it can achieve the effect of moving back and forth through the threaded connection. The second mounting seat 54 is fixedly connected to one end of the adjusting column 53 and serves as the installation base for the second cylinder 55 to ensure the stable operation of the second cylinder 55. The second cylinder 55 is installed inside the second mounting seat 54. By connecting the driving end to the clamping plate 56, it is used to drive the clamping and releasing actions of the clamping plate 56. The clamping plate 56 is fixedly connected to the driving end of the second cylinder 55 and is used to clamp the steel beam, ensuring that the steel beam will not shift due to vibration or external force during the spraying process and improving the stability of the spraying operation;

[0044] As Figure 1 shown in Figure 2 FIG. [FIGURE NUMBER], Figure 3 shown in Note: Since the figure numbers in ,

[0042] , Figure 1 , Figure 6 , ,

[0043] , ,

[0044] , Figure 1 , Figure 2 , Figure 3 are not provided in the original text, they are left as ,

[0042] , etc. in the translation. If the actual figure numbers are known, they should be filled in accordingly. Also, the "FIG. [FIGURE NUMBER]" notations in the translation are placeholders for the actual figure numbers that need to be determined based on the original document's figure references.Figure 7 As shown in the figure, a liquid collection component 6 is slidably connected inside the vertical plate 1. The liquid collection component 6 includes a collection frame 61 slidably connected to the inner wall of the vertical plate 1. One side of the collection frame 61 is fixedly connected with a clamping block 62. The outer side of the clamping block 62 is fixedly connected with a pull rod 63. The outer side of the pull rod 63 is slidably connected with a clamping column 64. A spring 65 is arranged inside the clamping column 64. The outer side of the clamping column 64 is fixedly connected to the inner wall of the vertical plate 1. One end of the spring 65 is fixedly connected to the pull rod 63, and the other end of the spring 65 is fixedly connected to the inner wall of the spring 65;

[0045] The collection frame 61 is slidably connected to the inner wall of the vertical plate 1 and is used to collect the excess liquid that may be generated during the spraying process, preventing the liquid from dripping and causing waste or pollution. The clamping block 62 is fixedly connected to one side of the collection frame 61 and is used to cooperate with the clamping column 64 to ensure the stable position of the collection frame 61 on the inner wall of the vertical plate 1. The pull rod 63 is fixedly connected to the outer side of the clamping block 62 and is used to automatically adjust the position of the collection frame 61. The clamping column 64 is fixedly connected to the inner wall of the vertical plate 1 and a spring 65 is arranged inside it, which is used to cooperate with the clamping block 62 to enable the collection frame 61 to closely fit the inner wall of the vertical plate 1. At the same time, the collection frame 61 can be pushed out when needed. In this way, when installing the workpiece, the collection frame 61 can be pushed out by stretching the spring 65, and when leaving, the collection frame 61 can be automatically reset by the pulling back of the spring 65. In this way, the liquid generated when the workpiece rotates and the excess liquid during spraying will be collected in the collection frame 61, which is convenient for subsequent recycling.

[0046] Working principle;

[0047] As Figure 1 - Figure 7 shown,

[0048] First, the rotational power of the third runner 27 is transmitted to the threaded column 52 through the rotating column 51, driving the adjusting column 53 to move axially along the thread pair. The distance between the clamping plates 56 of the two cylinders 55 on both sides is adjusted through the second mounting base 54 to adapt to steel beams of different specifications. After clamping, the continuous rotation of the third runner 27 drives the clamped steel beam to rotate self, forming a spiral spraying path with the lateral movement of the nozzle 36, completely covering the surface of the cylindrical steel beam. Subsequently, driven by the motor 22, after reducing the speed and increasing the torque through the reducer 23, the lead screw 24 is driven to rotate. The lead screw 24 drives the first runner 25 to rotate synchronously, and then drives the second runner 26 and the third runner 27 through the belt 28 to form a three-stage reduction drive. At this time, the rotation speed of the third runner 27 is reduced to 1 / 6 of the original speed, synchronously driving the moving block 31 connected by threads to move uniformly along the axis of the lead screw 24. The moving block 31 pushes the liquid storage tank 32 and the nozzle 36 as a whole to translate laterally. At the same time, the first cylinder 37 can adjust the vertical distance between the nozzle 36 and the steel beam to achieve two-dimensional precise coverage of the spraying trajectory. The anti-corrosion coating in the liquid storage tank 32 enters the booster pump 34 through the liquid delivery pipe 33 for pressurization and is then transported to the nozzle 36 through the hose 35. The stable pressure generated by the booster pump 34 causes the coating to form a uniform fan-shaped spray through the atomizing nozzle of the nozzle 36. Cooperating with the uniform movement of the moving block 31, it ensures that a continuous and dead-angle-free anti-corrosion coating is formed on the surface of the steel beam. During the movement of the moving block 31, the first limiting column 43 in the supporting bottom plate 42 and the second limiting column 44 in the supporting plate 41 form a double-track constraint, eliminating the jitter caused by the transmission gap of the lead screw 24. Finally, the remaining materials splashed during the spraying process and the droplets thrown off by the rotation of the steel beam fall into the collection frame 61. The clamping column 64 presses the collection frame 61 tightly against the inner wall of the vertical plate 1 through the elastic pressure of the spring 65. Pulling the pull rod 63 can conveniently remove the collection frame 61 for waste liquid recovery.

[0049] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A protective layer spraying device for anti-corrosion of steel beams, including a vertical plate (1), characterized in that: A liquid collection component (6) is slidably connected inside the vertical plate (1); A multi-stage drive component (2), the multi-stage drive component (2) includes a first mounting seat (21) fixedly connected to the vertical plate (1), a motor (22) is fixedly connected to the top end of the first mounting seat (21), a speed reducer (23) is fixedly connected to the drive end of the motor (22), a lead screw (24) is fixedly connected to one end of the speed reducer (23), a first runner (25) is fixedly connected to the end of the lead screw (24) away from the moving block (31), a second runner (26) is rotatably connected to one end of the vertical plate (1) close to the first runner (25), and a third runner (27) is rotatably connected to the bottom end of the side of the vertical plate (1) close to the first runner (25); A spraying component (3), the spraying component (3) includes a moving block (31) threadedly connected to the lead screw (24), a liquid storage tank (32) is fixedly connected to the top end of the moving block (31), an infusion pipe (33) is fixedly connected inside the liquid storage tank (32), a booster pump (34) is fixedly connected to the end of the infusion pipe (33) away from the liquid storage tank (32), a hose (35) is fixedly connected to the output end of the booster pump (34), a spray pipe (36) is fixedly connected to the end of the hose (35) away from the booster pump (34), and a limiting component (4) is threadedly connected to the outside of the spraying component (3); A clamping and rotating component (5), the clamping and rotating component (5) includes a rotating column (51) fixedly connected to the third runner (27), a threaded column (52) is fixedly connected to one end of the rotating column (51), an adjusting column (53) is threadedly connected to the outside of the threaded column (52), a second mounting seat (54) is fixedly connected to one end of the adjusting column (53), a second cylinder (55) is installed inside the second mounting seat (54), and a clamping plate (56) is fixedly connected to the drive end of the second cylinder (55).

2. The spraying device for the protective layer of steel beam anti-corrosion according to claim 1, characterized in that: The limiting component (4) includes a support plate (41) fixedly connected to the bottom end of the liquid storage tank (32), a support bottom plate (42) is fixedly connected to the bottom end of the moving block (31), a first limiting column (43) is slidably connected inside the support bottom plate (42), and a second limiting column (44) is slidably connected inside the support plate (41).

3. A protective layer spraying device for steel beam anti-corrosion according to claim 2, characterized in that: Both ends of the first limiting column (43) are fixedly connected to the inner side of the vertical plate (1), and both ends of the second limiting column (44) are fixedly connected to the inner side of the vertical plate (1).

4. A protective layer spraying device for steel beam anti-corrosion according to claim 1, characterized in that: The liquid collection component (6) includes a collection frame (61) slidably connected to the inner wall of the vertical plate (1), a clamping block (62) is fixedly connected to one side of the collection frame (61), a pull rod (63) is fixedly connected to the outside of the clamping block (62), a clamping column (64) is slidably connected to the outside of the pull rod (63), and a spring (65) is arranged inside the clamping column (64).

5. The spraying device for the protective layer for steel beam anti-corrosion according to claim 4, wherein: The outside of the clamping column (64) is fixedly connected to the inner wall of the vertical plate (1), one end of the spring (65) is fixedly connected to the pull rod (63), and the other end of the spring (65) is fixedly connected to the inner wall of the spring (65).

6. The spraying device for the protective layer for steel beam anti-corrosion according to claim 1, characterized in that: A belt (28) is sleeved on the outer sides of the lead screw (24) and the third runner (27), and one end of the belt (28) away from the lead screw (24) and the third runner (27) is sleeved on the second runner (26).

7. A spray coating device for a protective layer for anti-corrosion of a steel beam according to claim 2, characterized in that: A first cylinder (37) is fixedly connected to the top end of the nozzle (36), and the top end of the first cylinder (37) is fixedly connected to the bottom end of the support base plate (42).

8. The spraying device for the protective layer for steel beam anti-corrosion according to claim 2, wherein: The bottom end of the booster pump (34) is fixedly connected to the top end of the support base plate (42).

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