Paint spraying device for steel structure machining

Abstract

The paint spraying device for steel structure machining comprises a movable paint spraying mechanism, a left clamping mechanism is arranged on the left side of the movable paint spraying mechanism, a right clamping mechanism is arranged on the right side of the movable paint spraying mechanism, the left clamping mechanism and the right clamping mechanism are connected through a guide rope, and the guide rope penetrates through the movable paint spraying mechanism. And the right clamping mechanism is connected with the movable paint spraying mechanism through a pull rope. The invention relates to the technical field of steel structure machining equipment, in particular to a paint spraying device for steel structure machining. The clamping heads of the left clamping mechanism and the right clamping mechanism are matched with the spring structures in the buffer cylinders, so that steel pipe bodies with different lengths can be quickly clamped and fixed; and meanwhile, the second rope winding wheel is used for winding or releasing the guide rope, the span of the device can be flexibly adjusted according to the length of the steel pipe body, the paint spraying requirements of short, medium and long steel pipe bodies are met, and the problem that existing equipment is tedious in operation when being matched with the steel pipe bodies with different lengths is solved.

Description

Technical Field

[0001] This invention relates to the field of steel structure processing equipment technology, specifically to a painting device for steel structure processing. Background Technology

[0002] Steel structure construction is a new type of building system that breaks down the boundaries between the real estate, construction, and metallurgical industries, integrating them into a new industrial system. Compared to traditional concrete buildings, steel structure buildings use steel plates or structural steel instead of reinforced concrete, resulting in higher strength and better earthquake resistance. Furthermore, because components can be factory-made and installed on-site, the construction period is greatly reduced. The reusability of steel also significantly reduces construction waste, making it more environmentally friendly. In steel structure buildings, steel pipes are common components. During the prefabrication process, steel pipes are usually painted to greatly prevent rusting, enhancing their appearance and extending their service life.

[0003] Currently, automated painting equipment has gradually replaced traditional manual painting, demonstrating significant advantages in improving spraying efficiency and coating uniformity. However, in practical applications, it still faces two major pain points that severely restrict the industry's development: On the one hand, automated painting equipment needs to integrate multi-functional modules such as feeding, clamping, and spraying, which are expensive and mostly integrated designs with poor layout flexibility. This not only occupies a large amount of factory space for small and medium-sized enterprises, but also exacerbates the burden of equipment investment and site occupation due to high energy consumption, material consumption, and professional operation and maintenance costs during long-term operation. On the other hand, existing automated painting equipment is mostly designed with fixed specifications. When adapting to steel pipes of different lengths, it is necessary to change the position of the spray gun and replace the steel pipe clamping components. The component or structural adjustment is complex, cumbersome, and time-consuming.

[0004] To address this, we propose a painting device for steel structure processing. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a painting device for steel structure processing.

[0006] The technical solution adopted by the present invention is as follows: The present invention provides a painting device for steel structure processing, including a mobile painting mechanism. A left clamping mechanism is provided on the left side of the mobile painting mechanism, and a right clamping mechanism is provided on the right side of the mobile painting mechanism. The left clamping mechanism and the right clamping mechanism are connected by a guide rope, and the guide rope passes through the mobile painting mechanism. The right clamping mechanism and the mobile painting mechanism are connected by a pull rope.

[0007] Furthermore, the right clamping mechanism includes a right housing, in which a mounting plate is horizontally fixed. A rotating shaft passes through the mounting plate via a bearing. A rope winding wheel is fixedly sleeved on the rotating shaft. One end of the pull rope is wound around the rope winding wheel. A drive motor is fixedly installed on the top of the right housing. The output shaft of the drive motor extends into the housing and is fixedly connected to the top of the rotating shaft. A caster wheel is installed on the bottom of the right housing.

[0008] Furthermore, a second mounting plate is horizontally fixed inside the right housing, located below the first mounting plate. A driven shaft is horizontally rotatably mounted on the second mounting plate via a bearing seat. One end of the driven shaft rotates through the inner wall of the right housing and points towards the movable painting mechanism. A buffer cylinder is fixedly connected to the outer end of the driven shaft. A square block is slidably mounted inside the buffer cylinder. A connecting shaft is fixedly mounted on the side wall of the square block away from the driven shaft. The connecting shaft slides through the side wall of the buffer cylinder away from the driven shaft and is fixedly connected to a snap-fit ​​connector. A spring is provided inside the buffer cylinder, and the spring abuts against the square block and the inner wall of one side of the buffer cylinder. A bevel gear is fixedly connected to the bottom end of the first rotating shaft, and a second bevel gear is fixedly connected to the driven shaft. The second bevel gear meshes with the first bevel gear.

[0009] Furthermore, the left clamping mechanism includes a left housing, in which a mounting plate three is horizontally fixed, and a driven shaft two is horizontally rotatably mounted on the mounting plate three via a bearing seat. A snap-fit ​​connector two is fixedly connected to one end of the driven shaft two located outside the left housing, and the driven shaft two is coaxial with the driven shaft. A caster wheel is installed at the bottom of the left housing.

[0010] Furthermore, a second rotating shaft is vertically rotatable through the top of the left box via a bearing, and the second rotating shaft is located on both the front and rear sides of the middle of the left box. A second rope winding wheel is fixedly connected to the bottom end of the second rotating shaft. One end of the guide rope is wound around the second rope winding wheel, and the other end of the guide rope passes through the inner wall of the left box and the moving paint spraying mechanism before being fixedly connected to the right box.

[0011] Furthermore, a worm gear is fixedly connected to the top end of the second rotating shaft, and a worm is horizontally rotatably mounted on the top of the left housing via a bearing seat. The worm meshes with the worm gear, and a rotating handle is fixedly connected to one end of the worm.

[0012] Furthermore, the mobile painting mechanism includes a moving plate, a vertical plate integrally formed on the rear side of the moving plate, a horizontal plate integrally formed on the top of the vertical plate, an injection pipe passing through the horizontal plate, a dispensing pipe connected to the bottom of the injection pipe, and multiple spray nozzles connected to the bottom of the dispensing pipe; one side of the horizontal plate is fixedly connected to the other end of the pull rope; and casters are installed at the bottom of the left housing.

[0013] Furthermore, an n-shaped plate is fixedly connected to the top of the horizontal plate, and a symmetrical fixing rod is fixedly connected to the top of the n-shaped plate. Guide rods are fixedly connected to the front and rear ends of the fixing rods, and guide holes are opened on the guide rods along their axes. The guide rope passes through the guide holes.

[0014] Furthermore, positioning blocks are fixedly connected to the left and right side walls of the n-shaped plate, and snap-fit ​​blocks are fixedly connected to the side walls of the left and right boxes facing the n-shaped plate. The snap-fit ​​blocks have slots for sliding engagement with the positioning blocks. The positioning blocks have a first limiting hole, and the snap-fit ​​blocks have a second limiting hole. The first limiting hole and the second limiting hole are aligned vertically.

[0015] Furthermore, a push switch is provided inside the card slot, and the positioning block contacts the push switch after entering the card slot.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. This invention uses the clamping joints of the left and right clamping mechanisms in conjunction with the spring structure inside the buffer cylinder to quickly clamp and fix steel pipe bodies of different lengths; at the same time, by using the two winding wheels to wind or release the guide rope, the span of the device can be flexibly adjusted according to the length of the steel pipe body, adapting to the painting needs of short, medium and long steel pipe bodies of various specifications, solving the problem of cumbersome operation of existing equipment to adapt to steel pipe bodies of different lengths.

[0017] 2. This invention utilizes a drive motor to drive a rope reel to wind and unwind the rope, which can pull the mobile painting mechanism to move along the taut guide rope, making the painting path straight; at the same time, a rotating shaft drives the steel pipe body to rotate synchronously through bevel gear transmission, which, together with the uniform spraying of multiple spray heads, achieves all-round and uniform spraying of the steel pipe body surface.

[0018] 3. This invention adopts a modular design, with the left clamping mechanism, right clamping mechanism and mobile painting mechanism all equipped with casters for easy movement and handling; when stored, the three parts can be fixed together by the snap-fit ​​of the positioning block and the snap-fit ​​block, which greatly reduces the space occupied and solves the pain points of rigid layout and large space occupation of traditional integrated automated equipment. It is more suitable for the production needs of small and medium-sized enterprises, and the structure of this invention is simplified, which reduces the equipment purchase cost. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is the front view of the present invention; Figure 2 This is a front view of the present invention after the steel pipe body has been installed; Figure 3 This is a top view of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention; Figure 5 This is a three-dimensional structural schematic diagram from another perspective of the present invention; Figure 6 This is a partial cross-sectional view of the present invention; Figure 7 for Figure 3 Cross-sectional view of BB section; Figure 8 for Figure 7 Enlarged view of point B; Figure 9 for Figure 7 Enlarged view of point A.

[0020] The components include: 1. Mobile painting mechanism; 2. Left clamping mechanism; 3. Right clamping mechanism; 4. Guide rope; 5. Pull rope; 6. Caster wheel; 7. Steel pipe body; 31. Right box; 32. Mounting plate one; 33. Rotating shaft one; 34. Rope winding wheel one; 35. Drive motor; 36. Mounting plate two; 37. Driven shaft one; 38. Buffer cylinder; 39. Square block; 310. Connecting shaft; 311. Snap connector one; 312. Spring; 313. Bevel gear one; 314. Bevel gear two; 21. Left box. 22. Mounting plate three, 23. Driven shaft two, 24. Snap connector two, 25. Rotating shaft two, 26. Rope reel two, 27. Worm gear, 28. Worm, 29. Rotating handle, 11. Moving plate, 12. Horizontal plate, 13. Injection pipe, 14. Dispensing pipe, 15. Spray head, 16. N-shaped plate, 17. Fixing rod, 18. Guide rod, 19. Vertical plate, 61. Positioning block, 62. Snap block, 63. Snap groove, 64. Limiting hole one, 65. Limiting hole two, 66. Press switch. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] like Figures 1-2 As shown, the present invention discloses a painting device for steel structure processing, including a mobile painting mechanism 1. The mobile painting mechanism 1 has a left clamping mechanism 2 on its left side and a right clamping mechanism 3 on its right side. The left clamping mechanism 2 and the right clamping mechanism 3 are connected by a guide rope 4, and the guide rope 4 passes through the mobile painting mechanism 1. The right clamping mechanism 3 and the mobile painting mechanism 1 are connected by a pull rope 5.

[0024] Working principle: The steel pipe body 7 of different lengths is clamped and fixed by the right clamping mechanism 3 and the left clamping mechanism 2. At the same time, the moving painting mechanism 1 moves along the guide rope 4 to paint the steel pipe body 7 of different lengths.

[0025] like Figures 1-7 As shown, the right clamping mechanism 3 includes a right housing 31, in which a mounting plate 32 is horizontally fixed. A rotating shaft 33 is rotatably passed through the mounting plate 32 via a bearing. A rope winding wheel 34 is fixedly sleeved on the rotating shaft 33. One end of the pull rope 5 is wound around the rope winding wheel 34. A drive motor 35 is fixedly installed on the top of the right housing 31. The output shaft of the drive motor 35 extends into the housing and is fixedly connected to the top of the rotating shaft 33. A caster wheel 6 is installed at the bottom of the right housing 31.

[0026] The right clamping mechanism 3 is used to drive the winding wheel 34 to rotate via the drive motor 35, thereby winding the pull rope 5. The pull rope 5 is connected to the mobile painting mechanism 1, which can then drive the mobile painting mechanism 1 to move along the length of the steel pipe body 7 to paint the steel pipe body 7.

[0027] like Figures 1-7 , Figure 9 As shown, a second mounting plate 36 is horizontally fixed inside the right housing 31. The second mounting plate 36 is located below the first mounting plate 32. A driven shaft 37 is horizontally rotatably mounted on the second mounting plate 36 via a bearing seat. One end of the driven shaft 37 rotates through the inner wall of the right housing 31 and points towards the movable painting mechanism 1. A buffer cylinder 38 is fixedly connected to the end of the driven shaft 37 outside the right housing 31. A square block 39 is slidably disposed inside the buffer cylinder 38, and the square block 39 is away from the driven shaft. A connecting shaft 310 is fixedly installed on one side wall of shaft 37. The connecting shaft 310 slides through the side wall of the buffer cylinder 38 away from the driven shaft 37 and is fixedly connected to a snap-fit ​​connector 311. A spring 312 is installed inside the buffer cylinder 38. The spring 312 abuts against the square block 39 and the inner wall of one side of the buffer cylinder 38. A bevel gear 313 is fixedly connected to the bottom end of the rotating shaft 33. A bevel gear 314 is fixedly connected to the driven shaft 37. The bevel gear 314 meshes with the bevel gear 313.

[0028] like Figures 1-7 , Figure 9 As shown, the left clamping mechanism 2 includes a left housing 21. A mounting plate 3 22 is horizontally fixed inside the left housing 21. A driven shaft 23 is horizontally rotatably mounted on the mounting plate 3 22 via a bearing seat. A snap connector 24 is fixedly connected to one end of the driven shaft 23 located outside the left housing 21. The driven shaft 23 is coaxial with the driven shaft 1 37. A caster wheel 6 is installed at the bottom of the left housing 21.

[0029] The inner cavity of the buffer cylinder 38 has a square cross-section. By sliding the square block 39 inside the buffer cylinder 38 and compressing the spring 312, the snap-fit ​​connector 311 can be moved, making it convenient to snap-fit ​​the steel pipe body 7. In use, first snap-fit ​​one end of the steel pipe body 7 onto the snap-fit ​​connector 311 and push the snap-fit ​​connector 311 to make the square block 39 compress the spring 312. Then snap-fit ​​the other end of the steel pipe body 7 onto the snap-fit ​​connector 24. At this time, under the rebound action of the spring 312, the steel pipe body 7 is snapped between the snap-fit ​​connector 311 and the snap-fit ​​connector 24.

[0030] like Figures 1-7 , Figure 9 As shown, the top of the left box 21 is vertically rotatable through a bearing, and the rotating shaft 25 is located on the front and rear sides of the middle of the left box 21. The bottom end of the rotating shaft 25 is fixedly connected to the rope reel 26. One end of the guide rope 4 is wound around the rope reel 26, and the other end of the guide rope 4 passes through the inner wall of the left box 21 and the movable painting mechanism 1 and is fixedly connected to the right box 31.

[0031] The guide rope 4 can be wound or released by the set rope reel 26, which makes it convenient to clamp and fix steel pipe bodies 7 of different lengths. At the same time, the guide rope 4 can be tightened and straightened by the rigid support of the steel pipe body 7.

[0032] like Figures 1-7 , Figure 9 As shown, a worm gear 27 is fixedly connected to the top of the rotating shaft 25, and a worm 28 is horizontally rotatably mounted on the top of the left housing 21 through a bearing seat. The worm 28 meshes with the worm gear 27, and a rotating handle 29 is fixedly connected to one end of the worm 28.

[0033] The self-locking feature of the worm 28 and worm wheel 27 is used to prevent the guide rope 4 from loosening after being tightened. The worm 28 is a worm 28 containing two sets of helical teeth. The two sets of helical teeth are distributed and mesh with two sets of worm wheels 27, which makes it convenient to drive the two worm wheels 27 to rotate synchronously through one worm 28.

[0034] like Figures 1-7 , Figure 9As shown, the mobile painting mechanism 1 includes a moving plate 11, a vertical plate 19 integrally formed on the rear side of the moving plate 11, a horizontal plate 12 integrally formed on the top of the vertical plate 19, an injection pipe 13 passing through the horizontal plate 12, a distribution pipe 14 connected to the bottom of the injection pipe 13, and multiple spray nozzles 15 connected to the bottom of the distribution pipe 14; one side of the horizontal plate 12 is fixedly connected to the other end of the pull rope 5; and a caster wheel 6 is installed at the bottom of the left housing 21.

[0035] The paint is connected to the output hose of an external sprayer via the injection pipe 13. The sprayer is a device that uses a high-pressure pump to spray paint, which is existing technology and will not be described in detail here. The external sprayer can input paint into the distributor pipe 14 and spray it onto the steel pipe body 7 through the spray head 15.

[0036] like Figures 1-7 , Figure 9 As shown, an n-shaped plate 16 is fixedly connected to the top of the horizontal plate 12, and a symmetrical fixing rod 17 is fixedly connected to the top of the n-shaped plate 16. Guide rods 18 are fixedly connected to the front and rear ends of the fixing rods 17. Guide holes are opened on the guide rods 18 along their axis, and the guide rope 4 passes through the guide holes.

[0037] By passing the guide rope 4 through the guide rod 18, when the movable painting mechanism 1 moves, the guide rod 18 can move along the taut guide rope 4, so that the painting path can run in a straight line, ensuring the uniformity of the painting on the steel pipe body 7.

[0038] like Figure 7 , Figure 8 As shown, positioning blocks 61 are fixedly connected to the left and right side walls of the n-shaped plate 16, and snap-fit ​​blocks 62 are fixedly connected to the side walls of the left box 21 and the right box 31 facing the n-shaped plate 16, respectively. The snap-fit ​​blocks 62 are provided with snap-fit ​​grooves 63 that slide and snap-fit ​​with the positioning blocks 61. The positioning blocks 61 have a first limiting hole 64 through them, and the snap-fit ​​blocks 62 have a second limiting hole 65. The first limiting hole 64 and the second limiting hole 65 are aligned vertically.

[0039] When storing this device, insert the positioning block 61 into the slot 63, and insert the pin into the limiting hole 64 and the limiting hole 65 to fix the positioning block 61 and the snap-fit ​​block 62 together. Then, fix the right box 31 and the left box 21 on the n-shaped plate 16 to realize the combination of the mobile painting mechanism 1, the left clamping mechanism 2 and the right clamping mechanism 3, which is convenient for storage and reduces space occupation.

[0040] like Figure 7 , Figure 8 As shown, a push switch 66 is also provided inside the card slot 63, and the positioning block 61 contacts the push switch 66 after entering the card slot 63.

[0041] In practical use, firstly, the entire device can be moved to the location where the steel pipe body 7 is placed using the casters 6. Then, rotating the handle 29 drives the worm gear 28 to rotate, which in turn drives the worm wheel 27 to rotate, which in turn drives the rotating shaft 25 to rotate, which in turn drives the rope reel 26 to rotate, releasing the guide rope 4 on the rope reel 26. The length of the guide rope 4 is released appropriately according to the length of the steel pipe body 7, and the right box 31 is moved away from the moving plate 11 to straighten the guide rope 4. Then, the casters 6 at the bottom of the right box 31 are locked, and one end of the steel pipe body 7 is engaged with the engaging block 62. Then, the engaging block 62 and the connecting shaft 310 are moved, causing the square block 39 to compress the spring 312. At this time, the other end of the steel pipe body 7 is engaged. The mouth is engaged with the second clamping block 62, and then the handle 29 is rotated in the opposite direction to drive the second rope winding wheel 26 to wind the guide rope 4, so that the guide rope 4 is taut. At the same time, the left box 21 moves to the right box 31, and then the steel pipe body 7 moves to the right box 31, so that the first clamping block 62 abuts against one end of the buffer cylinder 38. Finally, the steel pipe body 7 is fixedly clamped between the first clamping block 62 and the second clamping block 62. At this time, the universal wheel 6 at the bottom of the left box 21 is locked. Then, it is connected to the output hose of the external spraying machine through the injection pipe 13. The spraying machine is a device that uses a high-pressure pump to spray paint. It is existing technology and will not be described in detail here. The external spraying machine can input paint into the liquid distribution pipe 14 and spray it onto the steel pipe body 7 through the spray head 15. Because the guide rope 4 is taut and the entire mobile painting mechanism 1 can move along the guide rope 4 via the casters 6 at the bottom of the moving plate 11, during painting, the drive motor 35 is started to drive the rotating shaft 33 to rotate, which in turn drives the winding wheel 34 to rotate, which in turn drives the pull rope 5 to wind up, causing the mobile painting mechanism 1 to move to the right side of the housing 31 and paint the steel pipe body 7. At the same time, the rotating shaft 33 also drives the driven shaft 37 to rotate through the meshing of the bevel gear 313 and the bevel gear 314, which in turn drives the steel pipe body 7 to rotate, thereby painting the surface of the steel pipe body 7. The entire surface is painted. When the mobile painting mechanism 1 moves to the right housing 31, the positioning block 61 on one side of the n-shaped plate 16 will enter the slot 63 and abut against the press switch 66. The press switch 66 controls the controller (not shown in the figure) installed on the right housing 31. The controller is electrically connected to the drive motor 35 and the sprayer. Thus, the press switch 66 can control the drive motor 35 and the sprayer to stop and turn off, so that the drive motor 35 and the sprayer can be automatically turned off. At this time, the rope reel 34 no longer pulls the rope 5, and the sprayer no longer pumps paint, and the painting ends automatically.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A painting device for steel structure processing, characterized in that: The device includes a mobile spray painting mechanism (1), with a left clamping mechanism (2) on the left side and a right clamping mechanism (3) on the right side. The left clamping mechanism (2) and the right clamping mechanism (3) are connected by a guide rope (4), and the guide rope (4) passes through the mobile spray painting mechanism (1). The right clamping mechanism (3) and the mobile spray painting mechanism (1) are connected by a pull rope (5).

2. The painting device for steel structure processing according to claim 1, characterized in that: The right clamping mechanism (3) includes a right box (31), a mounting plate (32) is horizontally fixed inside the right box (31), a rotating shaft (33) is rotatably passed through the mounting plate (32) via a bearing, a rope winding wheel (34) is fixedly sleeved on the rotating shaft (33), one end of the pull rope (5) is wound around the rope winding wheel (34), a drive motor (35) is fixedly installed on the top of the right box (31), the output shaft of the drive motor (35) extends into the box and is fixedly connected to the top of the rotating shaft (33); a universal wheel (6) is installed at the bottom of the right box (31).

3. The painting device for steel structure processing according to claim 2, characterized in that: The right housing (31) is horizontally fixed with a second mounting plate (36), which is located below the first mounting plate (32). A driven shaft (37) is horizontally mounted on the second mounting plate (36) via a bearing seat. One end of the driven shaft (37) rotates through the inner wall of the right housing (31) and points towards the moving paint spraying mechanism (1). A buffer cylinder (38) is fixedly connected to the end of the driven shaft (37) outside the right housing (31). A square block (39) is slidably provided inside the buffer cylinder (38). The square block (39) is away from the driven shaft (37). A connecting shaft (310) is fixed on one side wall of the buffer cylinder (38). The connecting shaft (310) slides through the side wall of the buffer cylinder (38) away from the driven shaft (37) and is fixedly connected to a snap connector (311). A spring (312) is provided inside the buffer cylinder (38). The spring (312) abuts against the square block (39) and the inner wall of one side of the buffer cylinder (38). A bevel gear (313) is fixedly connected to the bottom end of the rotating shaft (33). A bevel gear (314) is fixedly connected to the driven shaft (37). The bevel gear (314) meshes with the bevel gear (313).

4. The painting device for steel structure processing according to claim 3, characterized in that: The left clamping mechanism (2) includes a left housing (21), and a mounting plate three (22) is horizontally fixed inside the left housing (21). A driven shaft two (23) is horizontally mounted on the mounting plate three (22) through a bearing seat. A snap connector two (24) is fixedly connected to one end of the driven shaft two (23) outside the left housing (21). The driven shaft two (23) is coaxial with the driven shaft one (37). A caster wheel (6) is installed at the bottom of the left housing (21).

5. A painting device for steel structure processing according to claim 4, characterized in that: The top of the left box (21) is vertically rotated by a bearing and a rotating shaft (25) passes through it. The rotating shaft (25) is located on the front and rear sides of the middle of the left box (21). The bottom end of the rotating shaft (25) is fixedly connected to a rope reel (26). One end of the guide rope (4) is wrapped around the rope reel (26), and the other end of the guide rope (4) passes through the inner wall of the left box (21) and the moving paint spraying mechanism (1) and is fixedly connected to the right box (31).

6. A painting device for steel structure processing according to claim 5, characterized in that: The top of the rotating shaft (25) is fixedly connected to a worm gear (27), and the top of the left housing (21) is horizontally mounted with a worm (28) through a bearing seat. The worm (28) meshes with the worm gear (27), and a rotating handle (29) is fixedly connected to one end of the worm (28).

7. A painting device for steel structure processing according to claim 6, characterized in that: The mobile painting mechanism (1) includes a mobile plate (11), a vertical plate (19) integrally formed on the rear side of the mobile plate (11), a horizontal plate (12) integrally formed on the top of the vertical plate (19), an injection pipe (13) passing through the horizontal plate (12), a dispensing pipe (14) connected to the bottom of the injection pipe (13), and multiple spray nozzles (15) connected to the bottom of the dispensing pipe (14); one side of the horizontal plate (12) is fixedly connected to the other end of the pull rope (5); and a caster wheel (6) is installed at the bottom of the left box (21).

8. A painting device for steel structure processing according to claim 7, characterized in that: The top of the horizontal plate (12) is fixed with an n-shaped plate (16), and the top of the n-shaped plate (16) is fixed with a left-right symmetrical fixing rod (17). The front and rear ends of the fixing rod (17) are fixed with guide rods (18). The guide rod (18) has a guide hole along its axis, and the guide rope (4) passes through the guide hole.

9. A painting device for steel structure processing according to claim 8, characterized in that: Positioning blocks (61) are fixedly connected to the left and right side walls of the n-shaped plate (16), and snap-fit ​​blocks (62) are fixedly connected to the side walls of the left box (21) and right box (31) facing the n-shaped plate (16). The snap-fit ​​blocks (62) have slots (63) that slide and snap-fit ​​with the positioning blocks (61). The positioning blocks (61) have a first limiting hole (64) through them, and the snap-fit ​​blocks (62) have a second limiting hole (65). The first limiting hole (64) and the second limiting hole (65) are aligned vertically.

10. A painting device for steel structure processing according to claim 9, characterized in that: The inner side of the card slot (63) is also provided with a push switch (66), and the positioning block (61) contacts the push switch (66) after entering the card slot (63).

Images