A steel structural member fireproofing coating spray thickness control tool

Abstract

The present application relates to steel structure member fireproof coating spraying technical field, and disclose a kind of steel structure member fireproof coating spraying thickness control tool, including adjusting mechanism, the surface of adjusting mechanism is provided with spraying mechanism, spraying mechanism is used to connect with fireproof coating feed pipe, steel structure member is sprayed, adjusting mechanism is used to adjust the spacing between spraying mechanism and steel structure member, the whole can be fixed on steel structure member by fixing mechanism in the present application, then adjusting mechanism can adjust the spacing between spraying mechanism and steel structure member, cooperate with the observation of observation ruler Real-time reading, the spacing between spray head block and steel structure member can be accurately controlled, the spraying thickness is limited, while the lower part of steel structure member is sprayed, fixing mechanism can be rotated and adjusted, and placed on ground, first spraying operation, reduce the problem of local coating too thick or too thin caused by spraying deviation, ensure that coating thickness meets the requirement of fireproof specification.

Description

Technical Field

[0001] This invention relates to the field of fire-retardant coating spraying technology for steel structure components, specifically a tool for controlling the thickness of fire-retardant coating spraying on steel structure components. Background Technology

[0002] Steel structural components are the core units of a steel structure system. They refer to load-bearing parts made of steel through processes such as cutting, welding, bolting, and painting. They mainly include beams, columns, trusses, supports, and connecting plates. The materials used are mostly low-carbon, high-strength steels such as Q235 and Q355, which have the characteristics of being lightweight, high-strength, and having excellent plasticity and toughness. They can withstand composite loads such as tension, compression, bending, and shear. These components have a high degree of standardization, which facilitates factory prefabrication and rapid on-site assembly. The construction cycle is short, and they can be recycled and reused after disassembly, which conforms to the concept of green building. They are widely used in industrial plants, high-rise buildings, large-span stadiums, and other projects.

[0003] Fire-retardant coatings for steel structures are functional coatings used to improve the fire resistance limit of steel structures. Their core function is to block the direct impact of high temperatures during a fire on the steel, preventing the steel from losing strength and rigidity due to temperature rise, thereby preventing the overall collapse of the steel structure. These coatings are classified into two types according to their fire-retardant mechanism: intumescent and non-intumescent. Intumescent coatings form a porous carbonized heat-insulating layer after exposure to fire, while non-intumescent coatings rely on their own low thermal conductivity for heat insulation. The application methods include spraying, brushing, and roller coating, and they are suitable for steel structure components under different working conditions.

[0004] In existing technologies, when spraying fire-retardant coatings onto steel structure components, the construction process generally adopts a manual operation mode of holding the spray nozzle and directly spraying the fire-retardant coating onto the surface of the component. During the spraying process, the coating thickness mainly relies on the operator's experience and subjective judgment, lacking precise real-time control methods. In some scenarios, after the spraying process is completed, it is necessary to use special testing tools to verify the coating thickness afterward. The above operation methods not only make it difficult to ensure the uniformity and consistency of the coating thickness, but also increase the workload of subsequent work.

[0005] Therefore, we propose a tool for controlling the thickness of fire-retardant coatings applied to steel structure components. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a tool for controlling the thickness of fire-retardant coatings applied to steel structure components. This tool solves the problem that in existing spraying processes, the thickness of the coating mainly relies on the subjective judgment of the operator's experience, lacking precise real-time control methods. In some scenarios, after the spraying process is completed, a special testing tool is needed to verify the coating thickness afterward. These methods not only make it difficult to ensure the uniformity and consistency of the coating thickness, but also increase the workload of subsequent operations.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tool for controlling the thickness of fire-retardant coating sprayed on steel structure components, comprising an adjustment mechanism, a spraying mechanism being provided on the surface of the adjustment mechanism, the spraying mechanism being connected to a fire-retardant coating delivery pipe for spraying the steel structure components, the adjustment mechanism being used to adjust the distance between the spraying mechanism and the steel structure components to control the spraying thickness, an observation mechanism being provided on the spraying mechanism for precisely adjusting the distance between the spraying mechanism and the steel structure components, and a fixing mechanism being rotatably connected to the adjustment mechanism for fixing it to the steel structure, the rotatability of the fixing mechanism facilitating the adjustment of the angle between the steel structure and the ground;

[0008] The spraying mechanism includes a connecting arm, on the surface of which two slide rails are fixedly connected. An auxiliary plate is provided between the two slide rails. Slider blocks are fixedly connected to both sides of the auxiliary plate. The sliders are inserted into the inner walls of the slide rails. Two slide rods are fixedly connected to the inner wall of the auxiliary plate. Spray head blocks are slidably connected to the surfaces of the two slide rods. The spray head blocks are fixedly connected to a connection port for connecting a fireproof coating delivery pipe. The auxiliary plate, spray head blocks, and connecting arm are flush with the side of the steel structure component.

[0009] Preferably, the adjustment mechanism includes a fixed arm, with extension shafts fixedly connected to both sides of the fixed arm. The fixed mechanism is rotatably connected to the extension shafts. Two guide cylinders are fixedly connected to the surface of the fixed arm, and two fixed rods are fixedly connected to the surface of the connecting arm. The two fixed rods are slidably connected to the inner wall of the guide cylinders. An adjustment screw is rotatably connected to the inner wall of the guide cylinders. The adjustment screw is rotatably connected to the inner wall of the fixed rods. With the above components, when it is necessary to adjust the distance between the nozzle block and the steel structure component, simply rotate the adjustment screw. The adjustment screw can drive the fixed rods to move in the guide cylinders, thereby driving the connecting arm, auxiliary plate, and nozzle block to move. In conjunction with the observation mechanism, the spray thickness can be precisely adjusted.

[0010] Preferably, a guide rail is fixedly connected to the surface of the guide cylinder, and a reinforcing arm is inserted into the surface of the guide rail. The reinforcing arm is fixedly connected to the side of the slide rail by screws. With the above components, the reinforcing arm can move in the guide rail when the spraying mechanism moves as a whole, thereby improving the stability effect when the whole moves.

[0011] Preferably, the fixing mechanism includes a housing, which is rotatably connected to the surfaces of the extension shaft and the fixing arm. A handle is fixedly connected to the housing. A positioning component is provided on the housing for positioning after rotational adjustment. A moving block is slidably connected to the inner wall of the housing. Multiple sets of electromagnets are fixedly connected to the inner wall of the moving block. A control component is also provided on the surface of the housing for controlling the movement of the moving block. A battery module and a control module are fixedly connected to the surface of the housing. The battery module supplies power to the electromagnets, and the control module controls the electromagnet switch. Through these components, during use, the electromagnets can be opened by the control module, allowing them to adhere to the steel structure component for overall adhesion, facilitating spraying. When spraying the lower part of the steel structure component, simply rotate the fixing mechanism and position it using the positioning component. Figure 8 As shown, spraying can be performed randomly. In addition, the electromagnet in this invention can be replaced with a vacuum adsorption device for adsorption and fixation.

[0012] Preferably, the control assembly includes two auxiliary rods fixed in the inner wall of the housing. The auxiliary rods are slidably connected to the inner wall of the movable block. A control screw is rotated in the inner wall of the housing and threadedly connected to the inner wall of the movable block. Through these components, the control screw can be rotated for adjustment as needed. The control screw can drive the movable block to move along the auxiliary rods within the housing to adjust its position. When fixed to a steel structure component, the movable block can be moved to its furthest point. When the fixing mechanism contacts the ground, the movable block can be retracted into the housing. Subsequently... Figure 8 Spraying is performed as shown.

[0013] Preferably, the positioning component includes a movable plate slidably connected to the inner wall of the housing. Multiple locking blocks are fixedly connected to the surface of the movable plate. Multiple locking slots are opened on the surfaces of the fixed arm and the extension shaft. The locking blocks are inserted into the inner walls of the locking slots. Through the above components, when the housing is rotated and adjusted on the fixed arm and the extension shaft, the movable plate can drive the locking blocks to move. The movable plate drives the locking blocks to insert into the corresponding locking slots to achieve the positioning operation and ensure stable spraying operation.

[0014] Preferably, a stabilizing spring is fixedly connected to the side of the movable plate corresponding to the inner wall of the housing. There are two stabilizing springs. Through the above-mentioned components, the elastic force of the stabilizing springs can push the movable plate and the locking block to reset, ensuring that the locking block can be stably inserted into the corresponding slot, thereby improving the stability effect.

[0015] Preferably, the auxiliary plate is U-shaped, and the width of the auxiliary plate is greater than the width of the steel structure component surface to be sprayed. With the above-mentioned components, the width of the auxiliary plate is greater than the width of the steel structure component surface to be sprayed, and when the spray head block moves in the slide bar, the surface of the steel structure component to be sprayed can be completely sprayed.

[0016] Preferably, the observation mechanism includes a mounting sleeve inserted into the inner wall of the connecting arm. The mounting sleeve is fixed to the connecting arm by screws. The inner wall of the mounting sleeve is provided with a movable part. An observation ruler is fixedly connected to the surface of the movable part. The movable part is used to control the movement and reset of the observation ruler. Through the above components, during the adjustment process, the movable part can drive the observation ruler to fit against the surface of the steel structure component to be sprayed. When the connecting arm and the spray head block move, the movable part drives the observation ruler to always fit against the steel structure component. Based on the reading of the observation ruler, the overall adjustment accuracy can be improved.

[0017] Preferably, the movable part includes a plurality of guide rods fixed in the inner wall of the mounting sleeve. A movable seat is slidably connected to the surface of the guide rod. The observation ruler is fixed on the surface of the movable seat. A return spring is sleeved on the surface of the guide rod. The two ends of the return spring are fixedly connected to the movable seat and the inner wall of the mounting sleeve, respectively. Through the above components, the return spring can drive the movable seat to move, while ensuring that the observation ruler can fit against the surface of the steel structure for easy observation and operation.

[0018] In summary, the technical effects and advantages of this invention are as follows:

[0019] 1. In this invention, the entire assembly can be fixed to the steel structure component by a fixing mechanism. Then, the adjustment mechanism can adjust the distance between the spraying mechanism and the steel structure component. With the real-time reading of the observation ruler of the observation mechanism, the distance between the nozzle block and the steel structure component can be accurately controlled, and the spraying thickness can be limited. At the same time, when spraying the lower part of the steel structure component, the fixing mechanism can be rotated and adjusted and placed on the ground for the first spraying operation, reducing the problem of local coating being too thick or too thin due to spraying deviation, and ensuring that the coating thickness meets the fire protection specifications.

[0020] 2. In this invention, by setting up a spraying mechanism, the nozzle block can slide laterally along the slide bar, and the auxiliary plate can move longitudinally along the slide rail via the slider, thereby realizing the two-dimensional movement of the spraying mechanism. The auxiliary plate is designed as a U-shape and its width is greater than the width of the steel structure surface to be sprayed, so that it can completely cover the target spraying area.

[0021] 3. In this invention, a fixing mechanism is set up. The fixing mechanism uses an electromagnet for adsorption and fixing, which can quickly fit the surface of the steel structure. It is easy to assemble and disassemble and is firmly fixed. At the same time, the fixing mechanism is rotatably connected to the extension shaft of the adjustment mechanism. With the moving plate, stabilizing spring, card block and card slot structure of the positioning component, the spraying angle can be flexibly adjusted to meet the multi-position spraying operation of the steel structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a fireproof coating spraying thickness control tool for steel structure components according to the present invention;

[0023] Figure 2 This is a schematic diagram of another perspective of the fireproof coating spraying thickness control tool for steel structure components according to the present invention;

[0024] Figure 3 This is an exploded structural diagram of a fire-retardant coating thickness control tool for steel structure components according to the present invention;

[0025] Figure 4 This invention relates to a tool for controlling the thickness of fire-retardant coating sprayed on steel structure components. Figure 3 Schematic diagram of the structure at point A in the middle;

[0026] Figure 5 This is a schematic diagram of the spraying mechanism of a fireproof coating thickness control tool for steel structure components according to the present invention.

[0027] Figure 6 This is a cross-sectional schematic diagram of the fixing mechanism of a fireproof coating spraying thickness control tool for steel structure components according to the present invention.

[0028] Figure 7 This is a cross-sectional schematic diagram of the observation mechanism of a fireproof coating spraying thickness control tool for steel structure components according to the present invention.

[0029] Figure 8 This is a schematic diagram of the spraying structure between the steel structure component and the ground, based on a fire-retardant coating thickness control tool for steel structure components according to the present invention.

[0030] In the diagram: 1. Adjustment mechanism; 11. Fixed arm; 12. Extension shaft; 13. Guide cylinder; 14. Guide rail; 15. Reinforcing arm; 16. Fixed rod; 17. Adjusting screw; 2. Spraying mechanism; 21. Auxiliary plate; 22. Slider; 23. Slide rail; 24. Connecting arm; 25. Spray nozzle block; 26. Connection port; 27. Slide rod; 3. Fixing mechanism; 31. Handle; 32. Housing; 33. Battery module; 34. Control module; 35. Control screw; 36. Auxiliary rod; 37. Moving block; 38. Electromagnet; 39. Moving plate; 310. Locking block; 311. Stabilizing spring; 312. Locking slot; 4. Observation mechanism; 41. Observation ruler; 42. Mounting sleeve; 43. Moving seat; 44. Guide rod; 45. Return spring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] refer to Figure 1 - Figure 8 The tool shown is a fire-retardant coating thickness control tool for steel structure components, including an adjustment mechanism 1. A spraying mechanism 2 is provided on the surface of the adjustment mechanism 1. The spraying mechanism 2 is used to connect to the fire-retardant coating delivery pipe for spraying the steel structure components. The adjustment mechanism 1 is used to adjust the distance between the spraying mechanism 2 and the steel structure components to control the coating thickness. An observation mechanism 4 is also provided on the spraying mechanism 2 for precisely adjusting the distance between the spraying mechanism 2 and the steel structure components. A fixing mechanism 3 is also rotatably connected to the adjustment mechanism 1 for fixing it to the steel structure. The rotatable setting on the fixing mechanism 3 facilitates the adjustment of the angle between the steel structure and the ground.

[0033] The spraying mechanism 2 includes a connecting arm 24, on which two slide rails 23 are fixedly connected. An auxiliary plate 21 is provided between the two slide rails 23. Slider blocks 22 are fixedly connected to both sides of the auxiliary plate 21. The sliders 22 are inserted into the inner walls of the slide rails 23. Two slide rods 27 are fixedly connected to the inner wall of the auxiliary plate 21. Spray nozzle blocks 25 are slidably connected to the surfaces of the two slide rods 27. Spray nozzle blocks 25 are fixedly connected to a connection port 26 for connecting a fireproof coating delivery pipe. The auxiliary plate 21, spray nozzle blocks 25, and connecting arm 24 are flush with the side of the steel structure component. The auxiliary plate 21 is U-shaped and its width is greater than the width of the surface of the steel structure component to be sprayed. When the spray nozzle block 25 moves in the slide rods 27, it can completely spray the surface of the steel structure component to be sprayed.

[0034] In this embodiment: the fireproof coating delivery pipe can be connected to the connection port 26 on the nozzle block 25. During spraying, the adjustment mechanism 1 can adjust the distance between the auxiliary plate 21, the nozzle block 25 and the connecting arm 24 and the steel structure component. When spraying, the nozzle block 25 can limit the spray thickness. At the same time, the nozzle block 25 can move in the slide bar 27 to achieve lateral spraying. Meanwhile, the slider 22 can move in the guide rail to achieve longitudinal spraying operation.

[0035] The adjusting mechanism 1 includes a fixed arm 11, with extension shafts 12 fixedly connected to both sides of the fixed arm 11. The fixing mechanism 3 is rotatably connected to the extension shafts 12. Two guide cylinders 13 are fixedly connected to the surface of the fixed arm 11. Two fixing rods 16 are fixedly connected to the surface of the connecting arm 24. The two fixing rods 16 are slidably connected to the inner wall of the guide cylinder 13. An adjusting screw 17 is rotatably connected to the inner wall of the guide cylinder 13. The adjusting screw 17 is rotatably connected to the inner wall of the fixing rod 16.

[0036] In this implementation scheme: when it is necessary to adjust the distance between the nozzle block 25 and the steel structure component, simply rotate the adjusting screw 17. The adjusting screw 17 can drive the fixed rod 16 to move in the guide cylinder 13, thereby driving the connecting arm 24, the auxiliary plate 21 and the nozzle block 25 to move. With the cooperation of the observation mechanism 4, the spraying thickness can be precisely adjusted.

[0037] The guide cylinder 13 is fixedly connected to the surface of the guide rail 14, and the surface of the guide rail 14 is provided with a reinforcing arm 15. The reinforcing arm 15 is fixedly connected to the side of the slide rail 23 by screws.

[0038] In this implementation scheme: when the spraying mechanism 2 moves as a whole, the reinforcing arm 15 can move in the guide rail 14 to improve the stability of the whole movement.

[0039] The fixing mechanism 3 includes a housing 32, which is rotatably connected to the surfaces of the extension shaft 12 and the fixing arm 11. A handle 31 is fixedly connected to the housing 32, and a positioning component is provided on the housing 32 for positioning after rotational adjustment. A moving block 37 is slidably connected to the inner wall of the housing 32, and multiple sets of electromagnets 38 are fixedly connected to the inner wall of the moving block 37. A control component is also provided on the surface of the housing 32 for controlling the movement of the moving block 37. A battery module 33 and a control module 34 are fixedly connected to the surface of the housing 32. The battery module 33 is used to power the electromagnets 38, and the control module 34 is used to control the switching of the electromagnets 38. The control assembly includes two auxiliary rods 36 fixed in the inner wall of the housing 32. The auxiliary rods 36 are slidably connected to the inner wall of the moving block 37. The inner wall of the housing 32 is rotated by a control screw 35, which is threadedly connected to the inner wall of the moving block 37. The positioning assembly includes a moving plate 39 slidably connected to the inner wall of the housing 32. Multiple locking blocks 310 are fixedly connected to the surface of the moving plate 39. Multiple slots 312 are opened on the surfaces of the fixed arm 11 and the extension shaft 12. The locking blocks 310 are inserted into the inner wall of the slots 312. A stabilizing spring 311 is fixedly connected to the side of the moving plate 39 corresponding to the inner wall of the housing 32. There are two stabilizing springs 311.

[0040] In this implementation scheme: During use, when adjusting as needed, the control screw 35 can be rotated. The control screw 35 can drive the moving block 37 to move along the auxiliary rod 36 within the housing 32 to adjust its position. When fixed on the steel structure component, the moving block 37 can be moved to its furthest distance. The electromagnet 38 can be opened by the control module 34, allowing it to adhere to the steel structure component for overall adhesion, thus facilitating spraying. When spraying the lower part of the steel structure component, the moving block 37 can be retracted into the housing 32 by rotating the fixing mechanism 3. After the housing 32 is rotated and adjusted on the fixing arm 11 and the extension shaft 12, the moving plate 39 can drive the locking block 310 to move. The moving plate 39 drives the locking block 310 to insert into the corresponding slot 312. The return spring 45 can improve the stability of the locking block 310 inserted into the slot 312, achieving positioning operation and ensuring stable spraying operation. Figure 8 As shown, spraying can be performed randomly. In addition, the electromagnet 38 in this invention can also be replaced with a vacuum adsorption device for adsorption and fixation.

[0041] The observation mechanism 4 includes a mounting sleeve 42 inserted into the inner wall of the connecting arm 24. The mounting sleeve 42 is fixed to the connecting arm 24 by screws. The inner wall of the mounting sleeve 42 is provided with a movable part. An observation ruler 41 is fixedly connected to the surface of the movable part. The movable part is used to control the movement and reset of the observation ruler 41. The movable part includes multiple guide rods 44 fixed in the inner wall of the mounting sleeve 42. A movable seat 43 is slidably connected to the surface of the guide rods 44. The observation ruler 41 is fixed to the surface of the movable seat 43. A reset spring 45 is sleeved on the surface of the guide rods 44. The two ends of the reset spring 45 are fixedly connected to the movable seat 43 and the inner wall of the mounting sleeve 42, respectively.

[0042] In this implementation scheme: During the adjustment process, the movable part can drive the observation ruler 41 to adhere to the surface of the steel structure component to be sprayed, and the return spring 45 can drive the moving seat 43 to move, while ensuring that the observation ruler 41 can adhere to the surface of the steel structure for easy observation and operation. When the connecting arm 24 and the spray head block 25 move, the movable part drives the observation ruler 41 to always adhere to the steel structure component, and the overall adjustment accuracy can be improved based on the reading of the observation ruler 41.

[0043] The working principle of this invention is as follows: When using the tool, firstly, to fix it to the surface of the steel structure component, the control screw 35 can be rotated. The control screw 35 drives the moving block 37 to move along the auxiliary rod 36 within the housing 32. Adjusting the position allows the moving block 37 to be moved to its furthest point. At this point, the moving block 37 is flush with the side of the connecting arm 24, auxiliary plate 21, and nozzle block 25 closest to the steel structure component, and the moving block 37 is attached to the surface of the steel structure component. The electromagnets 38 are then activated via the control module 34, allowing multiple electromagnets 38 to adhere to the surface of the steel structure component. For subsequent adjustments, simply rotate the adjusting screw 17. The adjusting screw 17 drives the fixed rod 16 to move within the guide cylinder 13, thereby driving the connecting arm 24 to move along the auxiliary rod 36. The connecting arm 24, auxiliary plate 21, and nozzle block 25 can move. The reinforcing arm 15 can move in the guide rail 14 to improve the stability of the overall movement. During the movement, the observation mechanism 4 can be observed. The return spring 45 in the observation mechanism 4, together with the moving seat 43, can drive the observation ruler 41 to always be in contact with the surface of the steel structure component. During adjustment, the nozzle thickness can be obtained based on the above reading. Then, the fireproof coating delivery pipe is connected to the connection port 26 on the nozzle block 25. When the nozzle block 25 is spraying, the nozzle block 25 can limit the spray thickness. At the same time, the nozzle block 25 can move in the slide bar 27 to achieve horizontal movement spraying. Meanwhile, the slider 22 can move in the guide rail to achieve vertical movement spraying operation.

[0044] When spraying the lower part of a steel structure component, such as Figure 8 As shown, during operation, the control screw 35 can be rotated to retract the moving block 37 into the housing 32, pushing the moving plate 39 and the locking block 310. The stabilizing spring 311 is stressed, and the locking block 310 loses its restraint on the locking slot 312. The housing 32 rotates on the fixed arm 11 and the extension shaft 12. After the housing 32 is rotated and adjusted on the fixed arm 11 and the extension shaft 12, the stabilizing spring 311 drives the moving plate 39 and the locking block 310 to reset. The locking block 310 is inserted into the corresponding locking slot 312. The stabilizing spring 311 can improve the stability of the locking block 310 inserted into the locking slot 312, realizing the positioning operation to ensure stable spraying operation. The spraying thickness can be adjusted by the above-mentioned adjustment mechanism 1. In addition, the electromagnet 38 in this invention can also be replaced with a vacuum adsorption device for adsorption and fixation.

[0045] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer for control.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tool for controlling the thickness of fire-retardant coating sprayed on steel structure components, comprising an adjustment mechanism (1), characterized in that: The surface of the adjustment mechanism (1) is provided with a spraying mechanism (2), which is used to connect with the fireproof coating delivery pipe to spray the steel structure components. The adjustment mechanism (1) is used to adjust the distance between the spraying mechanism (2) and the steel structure components and control the spraying thickness. The spraying mechanism (2) is also provided with an observation mechanism (4) for precisely adjusting the distance between the spraying mechanism (2) and the steel structure components. The adjustment mechanism (1) is also rotatably connected with a fixing mechanism (3) for fixing on the steel structure. The rotatable setting of the fixing mechanism (3) facilitates the adjustment of the angle between the steel structure and the ground. The spraying mechanism (2) includes a connecting arm (24), on which two slide rails (23) are fixedly connected. An auxiliary plate (21) is provided between the two slide rails (23). Slider blocks (22) are fixedly connected to both sides of the auxiliary plate (21). The sliders (22) are inserted into the inner wall of the slide rails (23). Two slide rods (27) are fixedly connected to the inner wall of the auxiliary plate (21). Spray head blocks (25) are slidably connected to the surfaces of the two slide rods (27). A connection port (26) is fixedly connected to the spray head blocks (25) for connecting the fireproof coating delivery pipe. The auxiliary plate (21), spray head blocks (25) and connecting arm (24) are flush with the side of the steel structure component. The adjusting mechanism (1) includes a fixed arm (11), and extension shafts (12) are fixedly connected to both sides of the fixed arm (11). The fixing mechanism (3) is rotatably connected to the extension shafts (12). Two guide cylinders (13) are fixedly connected to the surface of the fixed arm (11). Two fixing rods (16) are fixedly connected to the surface of the connecting arm (24). The two fixing rods (16) are slidably connected to the inner wall of the guide cylinders (13). An adjusting screw (17) is rotatably connected to the inner wall of the guide cylinders (13). The adjusting screw (17) is rotatably connected to the inner wall of the fixing rods (16). The guide cylinder (13) is fixedly connected to the surface of the guide rail (14), and a reinforcing arm (15) is inserted into the surface of the guide rail (14). The reinforcing arm (15) is fixedly connected to the side of the slide rail (23) by screws.

2. The tool for controlling the thickness of fire-retardant coating sprayed on steel structure components according to claim 1, characterized in that: The fixing mechanism (3) includes a housing (32), which is rotatably connected to the surfaces of the extension shaft (12) and the fixing arm (11). A handle (31) is fixedly connected to the housing (32). A positioning component is provided on the housing (32) for positioning after the housing (32) is rotated and adjusted. A moving block (37) is slidably connected to the inner wall of the housing (32). Multiple sets of electromagnets (38) are fixedly connected to the inner wall of the moving block (37). A control component is also provided on the surface of the housing (32) for controlling the movement of the moving block (37). A battery module (33) and a control module (34) are fixedly connected to the surface of the housing (32). The battery module (33) is used to power the electromagnets (38), and the control module (34) is used to control the switching of the electromagnets (38).

3. The tool for controlling the thickness of fire-retardant coating sprayed on steel structure components according to claim 2, characterized in that: The control assembly includes two auxiliary rods (36) fixed in the inner wall of the housing (32), the auxiliary rods (36) being slidably connected to the inner wall of the moving block (37), and a rotation control screw (35) of the inner wall of the housing (32) being threadedly connected to the inner wall of the moving block (37).

4. The tool for controlling the thickness of fire-retardant coating sprayed on steel structure components according to claim 2, characterized in that: The positioning component includes a movable plate (39) that is slidably connected to the inner wall of the housing (32). Multiple locking blocks (310) are fixedly connected to the surface of the movable plate (39). Multiple slots (312) are opened on the surfaces of the fixed arm (11) and the extension shaft (12). The locking blocks (310) are inserted into the inner wall of the slots (312).

5. The tool for controlling the thickness of fire-retardant coating sprayed on steel structure components according to claim 4, characterized in that: The movable plate (39) is fixedly connected to a stabilizing spring (311) on the side corresponding to the inner wall of the housing (32), and there are two stabilizing springs (311).

6. The tool for controlling the thickness of fire-retardant coating sprayed on steel structure components according to claim 1, characterized in that: The auxiliary plate (21) is U-shaped, and the width of the auxiliary plate (21) is greater than the width of the steel structure component surface to be sprayed.

7. The tool for controlling the thickness of fire-retardant coating sprayed on steel structure components according to claim 1, characterized in that: The observation mechanism (4) includes a mounting sleeve (42) inserted into the inner wall of the connecting arm (24). The mounting sleeve (42) is fixed to the connecting arm (24) by screws. The inner wall of the mounting sleeve (42) is provided with a movable part. An observation ruler (41) is fixedly connected to the surface of the movable part. The movable part is used to control the movement and reset of the observation ruler (41).

8. The tool for controlling the thickness of fire-retardant coating sprayed on steel structure components according to claim 7, characterized in that: The movable part includes a plurality of guide rods (44) fixed in the inner wall of the mounting sleeve (42). A movable seat (43) is slidably connected to the surface of the guide rod (44). The observation ruler (41) is fixed on the surface of the movable seat (43). A return spring (45) is sleeved on the surface of the guide rod (44). The two ends of the return spring (45) are fixedly connected to the movable seat (43) and the inner wall of the mounting sleeve (42) respectively.

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