A steel structure hot-dip galvanizing device
The design of automated devices has solved the problem of reliance on manual operation in existing technologies, realizing an automated process for hot-dip galvanizing of steel structures, improving production efficiency and galvanizing quality, ensuring the uniformity and adhesion of the zinc layer, and meeting the needs of large-scale production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 云南齐天金属结构有限公司
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-07
AI Technical Summary
Existing hot-dip galvanizing equipment for steel structures suffers from heavy reliance on manual operation, low production efficiency, uneven galvanizing quality, poor zinc layer adhesion, easy peeling, and inability to achieve continuous production.
An automated device, including cylinders, motors, and a hydraulic system, is used to automatically grasp, rotate, and spray flux onto the steel structure, ensuring uniform zinc coating. The automated process is achieved through the cooperation of cylinders and motors, while the hydraulic pump sprays the flux and performs rotary galvanizing.
The process of hot-dip galvanizing of steel structures has been automated, reducing labor intensity, improving production efficiency and galvanizing quality, ensuring the uniformity of the zinc layer, and enhancing the protective effect.
Smart Images

Figure CN224467882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot-dip galvanizing technology, and in particular to a hot-dip galvanizing device for steel structures. Background Technology
[0002] Hot-dip galvanizing of steel structures involves immersing the steel structure in molten zinc to form a zinc alloy coating on its surface, thus achieving corrosion protection. It is a commonly used anti-corrosion treatment process in steel structure fabrication. However, existing hot-dip galvanizing equipment for steel structures faces numerous problems in actual production, hindering improvements in production efficiency and galvanizing quality.
[0003] In terms of automation, the traditional hot-dip galvanizing process relies heavily on manual labor. Workers need to manually move the steel structure above the galvanizing bath, carefully place it into the molten zinc, and then manually remove it after galvanizing. The speed of manual operation is limited, making continuous production difficult and severely impacting overall production efficiency, thus failing to meet the demands of large-scale steel structure processing.
[0004] In terms of galvanizing quality control, existing equipment also has significant shortcomings. Most methods rely on manual brushing or simple spraying, resulting in uneven distribution of the flux on the steel structure surface. This affects the adhesion between the zinc layer and the steel structure, easily leading to problems such as zinc layer peeling and blistering. Furthermore, during the galvanizing process, the steel structure is usually kept stationary and cannot be rotated, causing inconsistent contact time and degree between different parts of the steel structure and the molten zinc. This results in uneven zinc layer thickness and even localized missed plating, significantly reducing the protective effect of the galvanized layer and shortening the service life of the steel structure. Utility Model Content
[0005] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a hot-dip galvanizing device for steel structures, which reduces the labor intensity of workers, improves production efficiency, ensures the uniformity of the zinc coating, and improves the quality of galvanizing.
[0006] This utility model also provides a hot-dip galvanizing device for steel structure as described above, including a galvanizing tank. Two first bases are fixedly connected to both sides of the galvanizing tank. A sliding plate is slidably connected to the upper end of each first base. A second motor is fixedly connected to the upper end of the sliding plate. A second positioning groove is fixedly connected to the output end of the second motor. A pretreatment tank is fixedly connected to one side of the galvanizing tank. A second base is fixedly connected to one side of the pretreatment tank. A hydraulic pump is fixedly connected to the upper end of the second base. A nozzle is fixedly connected to one side of the hydraulic pump. A workbench is fixedly connected to one side of the pretreatment tank. A positioning frame is fixedly connected to the upper end of the workbench. A positioning frame is fixedly connected to one side of the positioning frame. A third base is fixedly connected to the upper end of the third base. A first motor is fixedly connected to the upper end of the first motor. A threaded rod is fixedly connected to the output end of the first motor. A first baffle is rotatably connected to one side of the threaded rod. A sliding rod is fixedly connected to one side of the first baffle. A second baffle is fixedly connected to the other side of the sliding rod. A first slider is threadedly connected to the lower end of the threaded rod. A second slider is slidably connected to the lower end of the first slider and the second slider. A second connecting plate is fixedly connected to the lower end of the second connecting plate. Two first positioning grooves are fixedly connected to the lower end of the first connecting plate. Support legs are fixedly connected to the lower ends of the galvanizing pool and the pretreatment pool.
[0007] According to the present invention, in a hot-dip galvanizing apparatus for steel structures, the second motor is rotatably connected to one side of the galvanizing bath.
[0008] According to the present invention, a hot-dip galvanizing device for steel structure is provided, wherein a second cylinder is fixedly connected to one side of the sliding plate, and the lower end of the second cylinder is fixedly connected to the upper end of the first base.
[0009] According to the present invention, a hot-dip galvanizing device for steel structure is provided, wherein a nozzle is fixedly connected to one side of the hydraulic pump, and the nozzle is fixedly connected to the inner wall of the pretreatment tank on one side.
[0010] According to the present invention, in a hot-dip galvanizing device for steel structure, the lower end of the first baffle is fixedly connected to the upper end of the positioning frame.
[0011] According to the present invention, in a hot-dip galvanizing device for steel structure, the lower end of the second baffle is fixedly connected to the upper end of the positioning frame, and a threaded rod is rotatably connected inside the second baffle.
[0012] According to the present invention, a hot-dip galvanizing device for steel structure is provided, wherein a hydraulic rod is fixedly connected to the lower end of the second connecting plate, the lower end of the hydraulic rod is fixedly connected to the upper end of the first connecting plate, a first cylinder is fixedly connected to the inner wall of the second connecting plate, and the output end of the first cylinder is fixedly connected to the upper end of the first connecting plate.
[0013] According to the present invention, in a hot-dip galvanizing device for steel structure, two third cylinders are fixedly connected to the inner wall of the first connecting plate, a positioning block is fixedly connected to the output end of the third cylinder, the positioning block is slidably connected to the inside of the first positioning groove, and the outer wall of the third cylinder is fixedly connected to the first positioning groove.
[0014] Beneficial effects:
[0015] 1. The steel structure can be fixed by driving the lower positioning plate through the third cylinder. After fixing, the steel structure can be picked up by the first cylinder. After being picked up, the steel structure can be automatically picked up by the first motor after being galvanized in the galvanizing bath. This realizes the automation process of hot-dip galvanizing of steel structure, reduces manual operation, reduces the labor intensity of workers, and improves production efficiency.
[0016] 2. Using a hydraulic pump, a flux is sprayed onto the steel structure. After completion, the structure is gripped into the second positioning groove, and the second motor is started to rotate the steel structure, ensuring that the surface is evenly coated with a zinc layer and improving the quality of zinc plating. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a perspective view of a hot-dip galvanizing device for steel structures according to the present invention;
[0019] Figure 2 This is a structural diagram of a hot-dip galvanizing device for steel structures according to the present invention;
[0020] Figure 3 This is a structural diagram showing the connection between the slider and the positioning groove in a hot-dip galvanizing device for steel structures according to this utility model.
[0021] Figure 4 This is a structural diagram showing the connection between the second positioning grooves on both sides and the sliding plate of a hot-dip galvanizing device for steel structures according to this utility model.
[0022] Legend:
[0023] 1. Galvanizing tank; 2. Pretreatment tank; 3. Workbench; 4. Positioning frame; 5. First base; 6. Second base; 7. First baffle; 8. Threaded rod; 9. Sliding rod; 10. Second baffle; 11. First cylinder; 12. Third base; 13. First motor; 14. Second cylinder; 15. Second motor; 16. Hydraulic pump; 17. Nozzle; 18. First slider; 19. Hydraulic rod; 20. Positioning block; 21. First connecting plate; 22. Third cylinder; 23. First positioning groove; 24. Second connecting plate; 25. Sliding plate; 26. Second positioning groove; 27. Support leg; 28. Second slider. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] Reference Figure 1-4 This utility model discloses a hot-dip galvanizing device for steel structures, comprising a galvanizing tank 1, two first bases 5 fixedly connected to both sides of the galvanizing tank 1, a sliding plate 25 slidably connected to the upper end of the first base 5, a second motor 15 fixedly connected to the upper end of the sliding plate 25, and a second positioning groove 26 fixedly connected to the output end of the second motor 15. A pretreatment tank 2 is fixedly connected to one side of the galvanizing tank 1, a second base 6 is fixedly connected to one side of the pretreatment tank 2, a hydraulic pump 16 is fixedly connected to the upper end of the second base 6, a nozzle 17 is fixedly connected to one side of the hydraulic pump 16, a workbench 3 is fixedly connected to one side of the pretreatment tank 2, a positioning frame 4 is fixedly connected to the upper end of the workbench 3, and a third positioning frame 4 is fixedly connected to one side of the positioning frame 4. The base 12 has a first motor 13 fixedly connected to its upper end. The output end of the first motor 13 is fixedly connected to a threaded rod 8. A first baffle 7 is rotatably connected to one side of the threaded rod 8. A slide rod 9 is fixedly connected to one side of the first baffle 7. A second baffle 10 is fixedly connected to the other side of the slide rod 9. A first slider 18 is threadedly connected to the lower end of the threaded rod 8. A second slider 28 is slidably connected to the lower end of the slide rod 9. A second connecting plate 24 is fixedly connected to the lower ends of the first slider 18 and the second slider 28. A first connecting plate 21 is provided at the lower end of the second connecting plate 24. Two first positioning grooves 23 are fixedly connected to the lower end of the first connecting plate 21. Support legs 27 are fixedly connected to the lower ends of the galvanizing pool 1 and the pretreatment pool 2.
[0026] The second motor 15 is rotatably connected to one side of the galvanizing tank 1.
[0027] Specifically, the second motor 15 is rotatably connected to one side of the galvanizing tank 1, driving the internal steel structure to rotate during galvanizing.
[0028] A second cylinder 14 is fixedly connected to one side of the sliding plate 25, and the lower end of the second cylinder 14 is fixedly connected to the upper end of the first base 5.
[0029] Specifically, the second cylinder 14 controls the sliding plate 25 to slide on the first base 5 via the sliding plate 25 connected to the output end.
[0030] A nozzle 17 is fixedly connected to one side of the hydraulic pump 16, and one side of the nozzle 17 is fixedly connected to the inner wall of the pretreatment tank 2.
[0031] Specifically, the hydraulic pump 16 is a gear pump, and the nozzle 17 is installed on the inner wall of the pretreatment tank 2 to spray the plating flux onto the steel structure.
[0032] The lower end of the first baffle 7 is fixedly connected to the upper end of the positioning frame 4.
[0033] The lower end of the second baffle 10 is fixedly connected to the upper end of the positioning frame 4, and a threaded rod 8 is rotatably connected inside the second baffle 10.
[0034] Specifically, the threaded rod 8 rotates inside the second baffle 10, causing the lower mechanism to move.
[0035] A hydraulic rod 19 is fixedly connected to the lower end of the second connecting plate 24. The lower end of the hydraulic rod 19 is fixedly connected to the upper end of the first connecting plate 21. A first cylinder 11 is fixedly connected to the inner wall of the second connecting plate 24. The output end of the first cylinder 11 is fixedly connected to the upper end of the first connecting plate 21.
[0036] Specifically, the outer wall of the first cylinder 11 is fixed to the outer wall of the second connecting plate 24, and the lifting and lowering of the first connecting plate 21 is controlled by the first cylinder 11 and the hydraulic rod 19 below.
[0037] Two third cylinders 22 are fixedly connected to the inner wall of the first connecting plate 21. A positioning block 20 is fixedly connected to the output end of the third cylinder 22. The positioning block 20 is slidably connected inside the first positioning groove 23. The outer wall of the third cylinder 22 is fixedly connected to the first positioning groove 23.
[0038] Specifically, the positioning block 20 is controlled to slide inside the first positioning groove 23 by the third cylinder 22. By controlling the third cylinder 22, the positioning block 20 can be controlled to clamp and transport the steel structure below.
[0039] Working principle: First, the worker places the steel structure to be galvanized in the first positioning groove 23. Then, the third cylinder 22 is activated, which drives the positioning block 20 to clamp the steel structure below. After clamping, the first cylinder 11 is activated to lift and transport the steel structure. When it is transported above the pretreatment tank 2, the first cylinder 11 lowers the steel structure and starts the hydraulic pump 16 to spray the steel structure with flux. After spraying, the first cylinder 11 lifts the steel structure and transports it above the galvanizing tank 1. The first cylinder 11 is activated to lower the steel structure to a suitable height, and the second cylinders 14 on both sides are activated to clamp and fix the steel structure. After fixing, the third cylinder 22 is opened, and the second motor 15 is activated to rotate the steel structure to ensure that the galvanized layer is uniform. After galvanizing is completed, the second motor 15 is turned off, the third cylinder 22 is activated to clamp, and the first cylinder 11 is activated to transport the steel structure out.
[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A hot-dip galvanizing apparatus for steel structures, comprising a galvanizing bath (1), characterized in that: Two first bases (5) are fixedly connected to both sides of the galvanizing tank (1). A sliding plate (25) is slidably connected to the upper end of the first base (5). A second motor (15) is fixedly connected to the upper end of the sliding plate (25). A second positioning groove (26) is fixedly connected to the output end of the second motor (15). A pretreatment tank (2) is fixedly connected to one side of the galvanizing tank (1). A second base (6) is fixedly connected to one side of the pretreatment tank (2). A hydraulic pump (16) is fixedly connected to the upper end of the second base (6). A workbench (3) is fixedly connected to one side of the pretreatment tank (2). A positioning frame (4) is fixedly connected to the upper end of the workbench (3). A third base (12) is fixedly connected to one side of the positioning frame (4). A first motor (16) is fixedly connected to the upper end of the third base (12). 3) The output end of the first motor (13) is fixedly connected to a threaded rod (8). A first baffle (7) is rotatably connected to one side of the threaded rod (8). A slide rod (9) is fixedly connected to one side of the first baffle (7). A second baffle (10) is fixedly connected to the other side of the slide rod (9). A first slider (18) is threadedly connected to the lower end of the threaded rod (8). A second slider (28) is slidably connected to the lower end of the slide rod (9). A second connecting plate (24) is fixedly connected to the lower ends of the first slider (18) and the second slider (28). A first connecting plate (21) is provided at the lower end of the second connecting plate (24). Two first positioning grooves (23) are fixedly connected to the lower end of the first connecting plate (21). Support legs (27) are fixedly connected to the lower ends of the galvanizing pool (1) and the pretreatment pool (2).
2. The hot-dip galvanizing apparatus for steel structures according to claim 1, characterized in that, The second motor (15) is rotatably connected to one side of the galvanizing tank (1).
3. The hot-dip galvanizing apparatus for steel structures according to claim 1, characterized in that, A second cylinder (14) is fixedly connected to one side of the sliding plate (25), and the lower end of the second cylinder (14) is fixedly connected to the upper end of the first base (5).
4. The hot-dip galvanizing apparatus for steel structures according to claim 1, characterized in that, The hydraulic pump (16) has a nozzle (17) fixedly connected to one side, and the nozzle (17) is fixedly connected to the inner wall of the pretreatment tank (2) on one side.
5. A hot-dip galvanizing apparatus for steel structures according to claim 1, characterized in that, The lower end of the first baffle (7) is fixedly connected to the upper end of the positioning frame (4).
6. A hot-dip galvanizing apparatus for steel structures according to claim 1, characterized in that, The lower end of the second baffle (10) is fixedly connected to the upper end of the positioning frame (4), and a threaded rod (8) is rotatably connected inside the second baffle (10).
7. A hot-dip galvanizing apparatus for steel structures according to claim 1, characterized in that, A hydraulic rod (19) is fixedly connected to the lower end of the second connecting plate (24). The lower end of the hydraulic rod (19) is fixedly connected to the upper end of the first connecting plate (21). A first cylinder (11) is fixedly connected to the inner wall of the second connecting plate (24). The output end of the first cylinder (11) is fixedly connected to the upper end of the first connecting plate (21).
8. A hot-dip galvanizing apparatus for steel structures according to claim 1, characterized in that, Two third cylinders (22) are fixedly connected to the inner wall of the first connecting plate (21). A positioning block (20) is fixedly connected to the output end of the third cylinder (22). The positioning block (20) is slidably connected to the inside of the first positioning groove (23). The outer wall of the third cylinder (22) is fixedly connected to the first positioning groove (23).