Rapid fireproof paint spraying equipment for steel structure
By using a servo motor-driven bevel gear system and telescopic structure, the problem of uneven spraying caused by manual rotation is solved, achieving uniform coverage and efficient spraying of fire-retardant paint for steel structures, suitable for various steel structure scenarios.
Patent Information
- Application Number
- CN202520145203.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing fire-retardant paint spraying equipment for steel structures requires operators to manually rotate and adjust the spraying range, resulting in uneven spraying, low efficiency, and affecting fire resistance and service life.
The system employs a servo motor-driven bevel gear system and telescopic structure to achieve intermittent rotation and distance adjustment of the spray gun, which, combined with the control system, precisely controls the spraying range and distance.
It achieves uniform coverage of fire-retardant paint, improves spraying efficiency and uniformity, adapts to complex steel structures, and reduces labor costs.
Smart Images

Figure CN223788743U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fireproof paint technology for steel structures, specifically a rapid spraying device for fireproof paint on steel structures. Background Technology
[0002] Fire-retardant paint for steel structures is a special coating specifically designed for the surface of steel structures. It has the functions of high temperature resistance, delaying the temperature rise of steel, and preventing the steel strength from decreasing due to high temperature. Fire-retardant paint forms a protective film on the surface of steel, which can isolate the fire source and delay the spread of fire in the event of a fire.
[0003] Currently, most fire-retardant paint spraying equipment for steel structures is manual spray gun, which requires operators to manually rotate it to adjust the spraying range. The operation process requires continuous monitoring and adjustment of the spraying angle, resulting in low spraying efficiency. Since manual rotation makes it difficult to ensure the uniformity of spraying direction and speed, it is easy to cause uneven fire-retardant paint coverage, with some areas having too thick or too thin coatings. This not only wastes paint but may also affect the fire resistance and service life of the steel structure.
[0004] Therefore, a rapid spraying equipment for fire-retardant paint on steel structures is needed to solve the above-mentioned technical defects. Utility Model Content
[0005] The purpose of this invention is to provide a quick spraying device for fireproof paint on steel structures, so as to solve the problem mentioned in the background art that requires operators to manually rotate the device and cannot accurately control the spraying range.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a steel structure fireproof paint quick spraying device, including a handheld frame and a spray gun. The handheld frame has a power system installed inside. The power system includes a set of servo motors fixedly connected to the right side of the inner wall of the handheld frame. A first gear is fixedly sleeved on the output shaft of the servo motor. A second gear is meshed with the left side of the first gear. A rotating shaft is fixedly sleeved on the left side of the second gear. The rotating shaft is movably assembled inside the handheld frame. A rotating block is fixedly sleeved in the middle of the rotating shaft. A flange is machined on the outer wall of the rotating block. A rotating plate is movably assembled at the bottom of the handheld frame. Multiple sets of blocking blocks are welded to the top edge of the rotating plate, and the blocking blocks abut against the rotating block. A sleeve is movably sleeved at the bottom of the rotating plate, and a spray gun is fixedly connected to the bottom of the sleeve.
[0007] As a further technical solution of this utility model, both the first gear and the second gear are bevel gears, and the first gear and the second gear are perpendicular to each other.
[0008] As a further technical solution of this utility model, eight sets of the resistance blocks are arranged in a ring at the top of the rotating plate, and the size of the resistance blocks matches that of the rotating plate.
[0009] As a further technical solution of this utility model, the rotation range of the rotating plate is 0-360° in the horizontal direction, and the distance between the bottom end of the rotating block and the top end of the rotating plate is 2cm.
[0010] As a further technical solution of this utility model, a screw is fixedly sleeved at the bottom end of the first gear, a threaded block is sleeved on the outside of the screw, a connecting frame is hinged to the left side of the threaded block, and the connecting frame is fastened and fixed to the outer wall of the sleeve.
[0011] As a further technical solution of this utility model, a set of guide rods parallel to the screw are provided on the left side of the screw, and the threaded block is embedded in the right side of the guide rods and moves.
[0012] As a further technical solution of this utility model, a paint tube is connected to the nozzle at the front end of the spray gun, the paint tube is connected to the paint bucket, a compressor is installed at the output end of the paint bucket, a filter is installed at the output end of the compressor, and the filter is fixedly connected to the paint tube.
[0013] As a further technical solution of this utility model, a control system is installed in the upper left corner inside the handheld frame, and a handle is welded to the top of the handheld frame.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the steel structure fireproof paint quick spraying equipment not only achieves rotation and control of the spraying range, and extension and retraction for precise spraying, but also achieves ease of operation;
[0015] (1) By setting up a power system, servo motor, first gear, second gear, rotating shaft, rotating block, flange and stop block, the equipment drives the first gear to rotate through the servo motor. The first gear meshes with the second gear to drive the second gear to rotate synchronously. The rotating shaft drives the rotating block to rotate at a uniform speed through the drive of the second gear. When the rotating block rotates, the protruding flange engages with the stop block. While moving the stop block, the rotating plate rotates horizontally by 45°, realizing the intermittent rotation control of the spray gun. The spray range can be accurately adjusted by adjusting the speed of the drive shaft of the servo motor. By controlling the intermittent uniform rotation, the fireproof paint coverage is ensured to be uniform. This solves the problems of inaccurate spray range and uneven paint coverage of traditional spraying equipment, and improves the spraying efficiency and uniformity.
[0016] (2) By setting up a screw, threaded block, sleeve and connecting frame, the equipment can flexibly adjust the spraying distance of the spray gun. When the servo motor rotates, the first gear drives the screw to rotate synchronously. The screw meshes with the threaded block to realize the rise or fall of the threaded block. The connecting frame drives the sleeve to move synchronously, thereby realizing the extension or shortening of the spray gun nozzle to adjust the spraying distance. It is suitable for precise spraying of complex steel structures that are inconvenient to access. When no adjustment is needed, the connection between the connecting frame and the spray gun can be unlocked to achieve a fixed state, avoiding spraying errors caused by misoperation.
[0017] (3) The equipment is equipped with a handheld frame, handle, control system, paint pipe, filter and compressor. The control system controls the compressor to extract the fireproof paint from the paint bucket. The paint is filtered through the filter and then flows into the spray gun for spraying. The handheld frame and handle provide convenient support for hand operation. It is suitable for various steel structure spraying scenarios. The equipment is lightweight and portable, easy to move and operate, and reduces labor costs. Attached Figure Description
[0018] Figure 1 This is a frontal cross-sectional view of the present invention.
[0019] Figure 2 This is a front view schematic diagram of the rotating plate structure of this utility model;
[0020] Figure 3 This is a front view structural diagram of the threaded block of this utility model;
[0021] Figure 4 This is a top view schematic diagram of the rotating block structure of this utility model.
[0022] In the diagram: 1. Handheld frame; 2. Handle; 3. Control system; 4. Power system; 5. Spray gun; 6. Paint hose; 7. Filter; 8. Compressor; 9. Paint bucket; 10. Screw; 11. Guide rod; 12. Threaded block; 13. Sleeve; 14. Connecting frame; 15. Rotating plate; 16. Servo motor; 17. First gear; 18. Second gear; 19. Shaft; 20. Rotating block; 21. Flange; 22. Stop block. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-4This utility model provides an embodiment of a rapid fireproof paint spraying device for steel structures, comprising a handheld frame 1 and a spray gun 5. A power system 4 is installed inside the handheld frame 1. The power system 4 includes a set of servo motors 16 fixedly connected to the right side of the inner wall of the handheld frame 1. A first gear 17 is fixedly sleeved on the output shaft of the servo motor 16. A second gear 18 is meshed with the left side of the first gear 17. A rotating shaft 19 is fixedly sleeved on the left side of the second gear 18. The rotating shaft 19 is movably assembled inside the handheld frame 1. A rotating block 20 is fixedly sleeved on the middle part of the rotating shaft 19. A flange is machined on the outer wall of the rotating block 20. 21. A rotating plate 15 is movably mounted on the bottom of the handheld frame 1. Multiple sets of blocking blocks 22 are welded to the top edge of the rotating plate 15. The blocking blocks 22 abut against the rotating block 20. A sleeve 13 is movably sleeved on the bottom of the rotating plate 15. A spray gun 5 is fixedly connected to the bottom of the sleeve 13. The first gear 17 and the second gear 18 are both bevel gears. The first gear 17 and the second gear 18 are perpendicular to each other. Eight sets of blocking blocks 22 are arranged in a ring on the top of the rotating plate 15. The size of the blocking blocks 22 matches that of the rotating block 20. The rotation range of the rotating plate 15 is 0-360° in the horizontal direction. The distance between the bottom of the rotating block 20 and the top of the rotating plate 15 is 2cm.
[0025] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the device drives the first gear 17 to rotate via the servo motor 16. The first gear 17 meshes with the second gear 18, causing the second gear 18 to rotate synchronously. The rotating shaft 19 drives the rotating block 20 to rotate at a constant speed via the second gear 18. When the rotating block 20 rotates, the protruding flange 21 engages with the stop block 22. Moving the stop block 22 causes the rotating plate 15 to rotate horizontally by 45°, thus achieving intermittent rotation control of the spray gun 5. The spraying range can be precisely adjusted by adjusting the speed of the drive shaft of the servo motor 16. By controlling the intermittent uniform rotation, the uniform coverage of the fireproof paint is ensured.
[0026] The bottom end of the first gear 17 is fixedly sleeved with a screw 10, and a threaded block 12 is sleeved on the outside of the screw 10. A connecting frame 14 is hinged to the left side of the threaded block 12. The connecting frame 14 is fastened and fixed to the outer wall of the sleeve 13. A set of guide rods 11 parallel to the screw 10 is provided on the left side of the screw 10. The threaded block 12 is embedded in the right side of the guide rods 11 and moves.
[0027] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the equipment can flexibly adjust the spraying distance of the spray gun 5. When the servo motor 16 rotates, the first gear 17 drives the screw 10 to rotate synchronously. The screw 10 meshes with the threaded block 12 to make the threaded block 12 rise or fall. The connecting frame 14 drives the sleeve 13 to move synchronously, thereby making the nozzle of the spray gun 5 extend or shorten to adjust the spraying distance. When no adjustment is needed, the connection between the connecting frame 14 and the spray gun 5 can be unlocked to achieve a fixed state.
[0028] The nozzle at the front end of the spray gun 5 is connected to a paint tube 6, which is connected to a paint bucket 9. A compressor 8 is installed at the output end of the paint bucket 9, and a filter 7 is installed at the output end of the compressor 8. The filter 7 is fixedly connected to the paint tube 6. A control system 3 is installed in the upper left corner inside the handheld frame 1, and a handle 2 is welded to the top of the handheld frame 1.
[0029] Specifically, such as Figure 1 As shown, the equipment controls the compressor 8 through the control system 3 to extract the fire-retardant paint from the paint bucket 9. The paint is filtered through the filter 7 and then flows into the spray gun 5 through the paint pipe 6 for spraying. The handheld frame 1 and the handle 2 provide convenient support for handheld operation.
[0030] Working Principle: The equipment primarily utilizes compressed air. The compressor 8 draws paint from the paint bucket 9, filters it through the filter 7, and then sprays it out through the spray gun 5. A telescopic rotating structure is also incorporated. When the servo motor 16 rotates, the first gear 17 drives the screw 10 to rotate, thereby causing the threaded block 12 to rise or fall. The connecting frame 14 drives the sleeve 13 to fall, extending the spray gun 5 and adjusting the distance between the nozzle and the fire-retardant paint. This allows for precise spraying in inconvenient locations. When length adjustment is not required, the connecting frame 14 is positioned at the threaded block 12. When the screw 10 is rotated, the connection between the screw 10 and the spray gun 5 is released. The spray gun 5 will not extend with the rotation of the screw 10. The equipment is equipped with a power system 4, which drives the first gear 17 to rotate through the servo motor 16, thereby driving the second gear 18 that meshes with it to rotate. The rotating shaft 19 drives the rotating block 20 to rotate. When the rotating block 20 rotates at a constant speed, it engages with the blocking block 22 through the protruding flange 21. While moving the blocking block 22, it drives the rotating plate 15 to rotate horizontally by 45 degrees, ensuring that the rotation interval of the spray gun 5 is uniform. Thus, the spraying range can be controlled by adjusting the rotation of the drive shaft of the servo motor 16.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A quick spraying device for fireproof paint for steel structures, comprising a hand support (1) and a spraying gun (5), characterized in that: The handheld frame (1) is internally provided with a power system (4), the power system (4) comprises a group of servo motors (16) fixedly connected to the right side of the inner wall of the handheld frame (1), the output shaft of the servo motor (16) is fixedly sleeved with a first gear (17), the left side of the first gear (17) is engagedly connected with a second gear (18), the left side of the second gear (18) is fixedly sleeved with a rotating shaft (19), the rotating shaft (19) is movably assembled in the handheld frame (1), the rotating shaft (19) is fixedly sleeved with a rotating block (20) at the middle part, the outer wall of the rotating block (20) is processed with a flange (21), the inner bottom end of the handheld frame (1) is movably assembled with a rotating plate (15), a plurality of resistance blocks (22) are welded on the top edge of the rotating plate (15), the resistance blocks (22) are in contact with the rotating block (20), the bottom end of the rotating plate (15) is movably sleeved with a sleeve (13), and the bottom end of the sleeve (13) is fixedly connected with a spraying gun (5).
2. A steel structure fire-retardant paint quick spraying device according to claim 1, characterized in that: The first gear (17) and the second gear (18) are bevel gears, and the first gear (17) and the second gear (18) are perpendicular to each other.
3. The steel structure fire-retardant paint quick spraying device according to claim 1, characterized in that: The resistance blocks (22) are arranged in eight groups at the top end of the rotating plate (15), and the size of the resistance blocks (22) is matched with the rotating block (20).
4. The quick spraying apparatus for fire-retardant paint for steel structure according to claim 1, characterized in that: The rotating range of the rotating plate (15) is 0-360° in the horizontal direction, and the distance between the bottom end of the rotating block (20) and the top end of the rotating plate (15) is 2cm.
5. The apparatus according to claim 1, characterized in that: The bottom end of the first gear (17) is fixedly sleeved with a screw rod (10), the outer sleeve of the screw rod (10) is sleeved with a threaded block (12), the left side of the threaded block (12) is hingedly connected with a connecting frame (14), and the connecting frame (14) is buckled and fixed to the outer wall of the sleeve (13).
6. A steel structure fire-retardant paint quick spraying apparatus according to claim 5, characterized in that: A group of guide rods (11) parallel to the screw rod (10) are arranged on the left side of the screw rod (10), and the threaded block (12) is embedded in the right side of the guide rod (11) and moves.
7. The apparatus according to claim 1, wherein the apparatus is characterized by: The spraying gun (5) is connected with a paint pipe (6) at the nozzle of the front end, the paint pipe (6) is connected to a paint bucket (9), a compressor (8) is installed at the output end of the paint bucket (9), a filter (7) is installed at the output end of the compressor (8), and the filter (7) is fixedly connected with the paint pipe (6).
8. A steel structure fire-retardant paint quick spraying apparatus according to claim 1, characterized in that: A control system (3) is installed at the upper left corner in the handheld frame (1), and a handle (2) is welded on the top of the handheld frame (1).