A surface treatment device for steel structures and a method of operation

Abstract

The application relates to the technical field of surface treatment devices, in particular to a surface treatment device for steel structures and an operation method, which is convenient for surface treatment operation of large-size steel structures, has low requirements for the carrying and moving of corresponding steel structures during the treatment operation, is good in operability and applicability, can clean the surface of the steel structure after sand blasting, is convenient for sustainable sand blasting operation of the surface of the steel structure, is better in practicality, and comprises a main body structure, a sand blasting structure and multiple baffles. The main body structure comprises a round cover shell, a fixed handheld ring is fixedly connected to the top end of the round cover shell, a central hole is arranged at the center position of the top end of the round cover shell, a bent rod frame is fixedly connected to the round cover shell, a fixed cylinder frame is fixedly connected to the bent rod frame, an outer extension hole is arranged in the fixed cylinder frame, an inner extension cylinder is fixedly connected in the outer extension hole, a sand storage assembly is installed on the fixed cylinder frame, the sand blasting structure comprises a transfer cylinder and multiple sand blasting pipes, and the transfer cylinder is rotationally connected in the central hole.

Description

Technical Field

[0001] This invention relates to the field of surface treatment equipment technology, specifically to a surface treatment device and operating method for steel structures. Background Technology

[0002] It is evident that with the upgrading of infrastructure, more and more steel structures are being used in the field of infrastructure construction. Compared with traditional reinforced concrete structures, steel structures have unique advantages in terms of height, size, and lightness. In order to improve the service life of steel structures, it is usually necessary to carry out anti-corrosion treatment on the surface of the steel structure. Before the anti-corrosion treatment, the surface of the steel structure usually needs to be cleaned. Therefore, we propose a surface treatment device and operation method for steel structures to be used as an auxiliary cleaning method before the anti-corrosion treatment of steel structures.

[0003] A search revealed that Chinese patent application number CN202022443724.7 discloses a mold surface treatment device, which is roughly described as follows: It includes a base and a ball screw. Two sets of support plates are fixedly embedded in the upper end of the base. A first electric slide is embedded in the upper end of each support plate. A mold placement seat is fixedly installed on the sliding platform of the two sets of first electric slides. A baffle is fixedly connected to one end of the sliding platform of the two sets of first electric slides. A sandblasting box is fixedly installed in the upper end of the base. Two sets of second electric slides are fixedly embedded in the inner wall of the sandblasting box. A connecting plate is fixedly connected to the sliding platform of the two sets of second electric slides. A first fixing frame and a second fixing frame are symmetrically arranged at the bottom of the connecting plate. A limit plate is fixedly connected to one side of the first fixing frame, and the other end of the limit plate is connected to the second fixing frame. The limiting plate is fixedly connected to one side of the ball screw seat via a slider. A second rotating bearing is fixedly installed on one side of the second fixed frame. One end of the ball screw is fixedly inserted into the inner ring of the second rotating bearing. A motor is fixedly installed on one side of the first fixed frame via a fixed bracket. In use, the sliding platform of the first electric slide table drives the mold placement seat to slide to the outside of the sandblasting box. The worker places the mold that needs surface treatment on the mold placement seat and moves the mold into the sandblasting box via the sliding platform of the first electric slide table. The sandblasting gun connected to the spray gun placement seat sandblasts the mold. At the same time, the sliding platforms of the two sets of second electric slide tables drive the sandblasting gun to move longitudinally for sandblasting. The rotation of the motor shaft drives the ball screw to rotate, which in turn drives the sandblasting gun to move left and right for sandblasting.

[0004] While the aforementioned existing technical solutions can perform sandblasting on molds, the prerequisite for sandblasting is that the mold to be treated can be placed on a mold holder and can enter the sandblasting box along with the movement of the mold holder. Therefore, if the mold is large in size and it is difficult or even impossible to place it on the mold holder and enter the sandblasting box, the corresponding sandblasting process will be difficult to perform. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides a surface treatment device and operating method for steel structures.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a surface treatment device for steel structures, including multiple baffles, and also including a main structure and a sandblasting structure;

[0007] The main structure includes a circular cover shell, a fixed hand ring is fixedly connected to the top of the circular cover shell, a central hole is opened at the center of the top of the circular cover shell, a bent rod frame is fixedly connected to the circular cover shell, a fixed cylinder frame is fixedly connected to the bent rod frame, an external extension hole is opened on the fixed cylinder frame, an internal extension cylinder is fixedly connected in the external extension hole, and a sand storage component is installed on the fixed cylinder frame.

[0008] The sandblasting structure includes a central rotating cylinder and multiple sandblasting pipes. The central rotating cylinder is rotatably connected to the central hole and rotatably connected to the fixed cylinder frame. The central rotating cylinder is connected to an inclined pipe, and the multiple sandblasting pipes are all connected to the inclined pipe. Multiple baffles are respectively fixedly connected to the multiple sandblasting pipes except for one sandblasting pipe connected to the bottom opening of the inclined pipe, and the multiple baffles are all inserted into the inclined pipe. An outer extending cylinder is fixedly connected to the inclined pipe. A sliding frame is slidably connected to the bottom end of the outer extending cylinder, and an elastic spring is connected between the sliding frame and the outer extending cylinder. A recovery frame is fixedly connected to the sliding frame, and the recovery frame is connected to the outer extending cylinder through the connecting sliding frame. The outer extending cylinder is connected to a middle pipe, and the middle pipe is rotatably connected to the inner extending cylinder.

[0009] Specifically, a rotating collecting ring is rotatably connected to the circular housing, and a fixed collecting ring is fixedly connected to the outside of the circular housing. The fixed collecting ring is rotatably connected to the rotating collecting ring. An external connecting pipe is connected to the fixed collecting ring and is connected to the inner extension cylinder. The circular housing has multiple side openings, all of which are connected to the rotating collecting ring. A synchronization ring is rotatably connected to the bottom end of the circular housing. The synchronization ring is fixedly connected to the rotating collecting ring and to the recycling rack.

[0010] Specifically, the bottom end of the synchronization ring is rotatably connected to a supporting rotating ring.

[0011] Specifically, the recycling rack has two slopes, each with multiple recycling holes, and a scraper is fixedly connected to the bottom of the recycling rack.

[0012] Specifically, the sand storage assembly includes a sand storage bottle with a replenishment port and a detachable cap. The sand storage bottle is connected to a pipe rack, and the fixed cylinder rack has an installation hole. A rotating seat is fixedly connected to the installation hole, and a feeding port is provided in the rotating seat. The pipe rack is rotatably connected to the rotating seat.

[0013] Specifically, a limiting support assembly is installed on the circular housing. The limiting support assembly includes a support cylinder and a limiting frame. The support cylinder is fixedly connected to the circular housing, and a support rod is slidably connected inside the support cylinder. Two connecting plates are fixedly connected to the sand storage bottle, and both connecting plates are connected to the support rod. The limiting frame is rotatably connected to the circular housing, and a limiting spring is fixedly connected to the limiting frame. The limiting spring is fixedly connected to the support cylinder, and the limiting frame is used for auxiliary limiting of the support rod.

[0014] Specifically, both connecting plates are provided with elongated grooves, and each of the two elongated grooves is provided with a sliding connecting shaft, which is fixedly connected to the support rod.

[0015] Specifically, the limiting frame is provided with a limiting ridge, the support rod is provided with multiple limiting grooves that match the limiting ridge, and an operating rod is fixedly connected to the limiting frame.

[0016] Specifically, a large drive gear ring is rotatably connected to the circular housing, a small rotating gear ring is fixedly connected to the central rotating cylinder, the large drive gear ring meshes with the small transmission gear ring, and an auxiliary rotating operating ring is fixedly connected to the large drive gear ring.

[0017] A method for operating a surface treatment device for steel structures includes the following steps:

[0018] S1. When in use, first connect the fixed cylinder frame to the external air compressor and the inner extension pipe to the external air intake. When the air compressor starts, it can deliver high-pressure air into the fixed cylinder frame. When the air intake starts, it can provide negative pressure suction to the inner extension cylinder. Then, fill the sand storage component with sand and gravel. Adjust the relative position of the sand storage component to the round cover shell according to the part of the steel structure that needs to be treated to ensure that the sand and gravel stored in the sand storage component is always higher than the fixed cylinder frame.

[0019] S2. Next, place the cylindrical shell against the steel structure surface to be treated. First, start the air intake and air compressor. The high-pressure air sent into the fixed cylinder will be guided by the transfer cylinder and the inclined tube and sent into multiple sandblasting pipes. Due to the action of the high-pressure air, the sand and gravel flowing into the fixed cylinder under its own gravity will be blown into multiple sandblasting pipes. Multiple baffles can divert and guide the high-pressure air and sand and gravel, thereby improving the uniformity of the sand and gravel carried by the high-pressure air sprayed out of multiple sandblasting pipes. The sand and gravel sprayed out from the sandblasting pipe will maintain its own momentum and impact the steel structure surface to be treated, thus forming the sandblasting treatment operation on the steel structure surface.

[0020] S3. The operation of the suction machine creates a negative pressure inside the inner tube. Through the connection between the outer tube, the connecting slide, and the middle tube, the operation of the suction machine also creates a negative pressure in the recovery rack. The negative pressure recovery rack will adsorb the area near the steel structure surface, so as to achieve the effect of adsorbing and recovering the material on the steel structure surface. By rotating the central rotating cylinder, multiple sandblasting pipes can be synchronously rotated inside the dome shell, so as to facilitate sandblasting operations on the area covered by the dome shell relative to the steel structure surface.

[0021] S4. The rotation of the transfer cylinder will also cause the outer extension cylinder to rotate synchronously. The rotation of the outer extension cylinder will cause the rotation of the recovery frame through the sliding frame. The rotation of the recovery frame will clean the area covered by the round shell relative to the steel structure surface. The working area of ​​the recovery frame and the working area of ​​the sandblasting pipe will alternate, with little mutual influence between the two. The sandblasting and cleaning operations can be carried out alternately in a cycle, which is more practical.

[0022] The beneficial effects of this invention are:

[0023] The steel structure surface treatment device and operating method described in this invention, through the design of the main structure, forms the basic frame structure of the steel structure surface treatment device, which can fit the flat surface of the steel structure of a larger size, making it convenient to perform surface treatment operations on the steel structure of a larger size. The corresponding steel structure has low requirements for handling and moving during the treatment operation, and has good operability and applicability.

[0024] (2) The surface treatment device and operation method for steel structure described in this invention, through the design of the sandblasting structure, forms a sandblasting guide structure for the steel structure surface covered by the dome shell. While satisfying the basic sandblasting operation, it can clean the steel structure surface after sandblasting, so as to facilitate the continuous sandblasting operation of the steel structure surface and improve its practicality.

[0025] (3) The surface treatment device and operation method for steel structure described in this invention, through the design of the sand storage component, forms a sand supply structure. While satisfying the necessary sand supply function, it can be matched with a circular shell to form a circular shell in various postures and maintain the vertical posture of the circular shell. It can also realize the flow control of sand under its own gravity. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of the present invention in cross-section;

[0029] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the local structure at point A;

[0030] Figure 4 For the present invention Figure 2 A magnified schematic diagram of the local structure at point B;

[0031] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at point C in the middle;

[0032] Figure 6 This is a three-dimensional structural diagram of the recycling rack, rotating collection ring, and synchronization ring of the present invention.

[0033] Figure 7 This is a three-dimensional structural diagram of the entire invention viewed from below;

[0034] Figure 8 This is a three-dimensional structural diagram of the recycling rack, connecting slide, and scraper of the present invention.

[0035] Figure 9 This is a three-dimensional structural diagram of the sand storage bottle, pipe rack, and connecting plate of the present invention.

[0036] Figure 10 This is a three-dimensional structural diagram of the entire invention from another angle;

[0037] Figure 11 For the present invention Figure 10 A magnified schematic diagram of the local structure at point D;

[0038] Figure 12 This is a three-dimensional structural diagram showing the assembly of the circular housing, rotating collection ring, and fixed collection ring of the present invention.

[0039] Figure 13 This is a three-dimensional structural diagram of the recycling rack, connecting slide, and scraper of the present invention from another angle;

[0040] Figure 14 This is a three-dimensional structural diagram of the cooperation between the fixed cylinder frame and the rotating seat of the present invention;

[0041] Figure 15 This is a three-dimensional structural diagram of the cooperation between the support rod and the sliding coupling shaft of the present invention;

[0042] Figure 16 This is a three-dimensional structural diagram showing the interaction between the extended cylinder and the connecting slide of the present invention.

[0043] Figure 17 This is a three-dimensional structural diagram of the present invention, showing the arrangement and distribution of multiple sandblasting pipes relative to multiple baffles.

[0044] In the diagram: 1. Baffle; 2. Circular housing; 3. Fixed hand ring; 4. Bending rod frame; 5. Fixed cylinder frame; 6. Outer hole; 7. Inner cylinder; 8. Transfer cylinder; 9. Sandblasting pipe; 10. Inclined pipe; 11. Outer cylinder; 12. Sliding frame; 13. Elastic spring; 14. Retrieval frame; 15. Connecting slide; 16. Central tube; 17. Rotating collection ring; 18. Fixed collection ring; 19. External connecting pipe; 20. Side opening; 21. Synchronization ring; 2. Support rotating ring; 23. Slope; 24. Recovery hole; 25. Scraper; 26. Sand storage bottle; 27. Bottle cap; 28. Pipe rack; 29. ​​Rotating seat; 30. Feeding port; 31. Support cylinder; 32. Limiting frame; 33. Support rod; 34. Connecting plate; 35. Limiting spring; 36. Sliding coupling shaft; 37. Limiting ridge; 38. Limiting groove; 39. Operating rod; 40. Large drive gear ring; 41. Small transmission gear ring; 42. Auxiliary rotating operating ring. Detailed Implementation

[0045] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention is further described below in conjunction with specific embodiments. Specifically, the technical solutions in the embodiments of this invention are clearly and completely described. Obviously, the described embodiments are merely a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0046] Example: Please refer to Figures 1-17A surface treatment device for steel structures includes multiple baffles 1, a main structure, and a sandblasting structure. The main structure includes a circular housing 2, with a fixed hand ring 3 fixedly connected to the top of the circular housing 2. A central hole is provided at the center of the top of the circular housing 2. A bent rod frame 4 is fixedly connected to the circular housing 2, and a fixed cylinder frame 5 is fixedly connected to the bent rod frame 4. An outward extension hole 6 is provided on the fixed cylinder frame 5, and an inner extension cylinder 7 is fixedly connected inside the outward extension hole 6. Through the design of the main structure, the basic framework structure of the surface treatment device for steel structures is formed, which can be used with larger sizes. The flat surface of the steel structure forms a close fit, facilitating surface treatment operations on larger steel structures. The handling and movement requirements of the corresponding steel structure during the treatment process are low, offering good operability and applicability. A sand storage assembly is installed on the fixed cylinder 5, including a sand storage bottle 26. The sand storage bottle 26 has a replenishment port with a detachable cap 27. The sand storage bottle 26 is connected to a pipe rack 28. The fixed cylinder 5 has mounting holes, and a rotating seat 29 is fixedly connected within these holes. A feeding port 30 is located within the rotating seat 29. The pipe rack 28 is rotatably connected to the rotating seat 29. Inside the moving base 29, a limiting support assembly is installed on the circular housing 2. The limiting support assembly includes a support cylinder 31 and a limiting frame 32. The support cylinder 31 is fixedly connected to the circular housing 2, and a support rod 33 is slidably connected inside the support cylinder 31. Two connecting plates 34 are fixedly connected to the sand storage bottle 26, and both connecting plates 34 are connected to the support rod 33. The limiting frame 32 is rotatably connected to the circular housing 2, and a limiting spring 35 is fixedly connected to the limiting frame 32. The limiting spring 35 is fixedly connected to the support cylinder 31. The limiting frame 32 is used for auxiliary limiting of the support rod 33. Both connecting plates 34 have openings... There are two long slots, each with a sliding shaft 36. Both sliding shafts 36 are fixedly connected to the support rod 33. The limiting frame 32 is provided with a limiting ridge 37. The support rod 33 has multiple limiting slots 38 that match the limiting ridge 37. The limiting frame 32 is fixedly connected with an operating rod 39. Through the design of the sand storage component, a sand and gravel supply structure is formed. While meeting the necessary sand and gravel supply function, it can be matched with the circular shell 2 to maintain the vertical posture of the circular shell 2 in various postures. It can also realize the flow control of sand and gravel under its own gravity.

[0047] It should be further explained that the sandblasting structure includes a central rotating cylinder 8 and multiple sandblasting pipes 9. The central rotating cylinder 8 is rotatably connected to the central hole and is rotatably connected to the fixed cylinder frame 5. The central rotating cylinder 8 is connected to an inclined pipe 10. All the multiple sandblasting pipes 9 are connected to the inclined pipe 10. Multiple baffles 1 are fixedly connected to the multiple sandblasting pipes 9 except for the one sandblasting pipe 9 that is connected to the bottom opening of the inclined pipe 10. All the baffles 1 are inserted into the inclined pipe 10. An extended cylinder 11 is fixedly connected to the inclined pipe 10. A sliding frame 12 is slidably connected to the bottom end of the extended cylinder 11. The sliding frame 12 is connected to the extended cylinder 11. An elastic spring 13 connects the two sides. A retrieval frame 14 is fixedly connected to the sliding frame 12. The retrieval frame 14 is connected to the outer extension cylinder 11 through a connecting slide 15. The retrieval frame 14 is provided with two slopes 23, each with multiple retrieval holes 24. A scraper 25 is fixedly connected to the bottom end of the retrieval frame 14. The outer extension cylinder 11 is connected to a central tube 16, which is rotatably connected to the inner extension cylinder 7. Through the design of the sandblasting structure, a sandblasting guide structure is formed on the surface of the steel structure covered by the dome shell 2. While meeting the basic sandblasting operation, it can also clean the surface of the steel structure after sandblasting. To facilitate sustainable sandblasting operations on steel structures and improve practicality, a rotating collecting ring 17 is rotatably connected to the circular housing 2, and a fixed collecting ring 18 is fixedly connected to the outside of the circular housing 2. The fixed collecting ring 18 is rotatably connected to the rotating collecting ring 17, and an external connecting pipe 19 is connected to the fixed collecting ring 18, which is connected to the inner extension cylinder 7. Multiple side openings 20 are provided on the circular housing 2, all of which are connected to the rotating collecting ring 17. A synchronization ring 21 is rotatably connected to the bottom end of the circular housing 2, and the synchronization ring 21 is fixedly connected to the rotating collecting ring 17. The synchronous ring 21 is fixedly connected to the recycling rack 14, which expands the cleaning effect on the steel structure surface that is fastened to the circular housing 2. The bottom end of the synchronous ring 21 is rotatably connected to the support rotating ring 22, which facilitates the formation of support relative to the steel structure surface and reduces the influence of the surface treatment device on the rotation of the rotating collection ring 17 after it rests on the steel structure surface. A large drive gear ring 40 is rotatably connected to the circular housing 2, and a small rotating gear ring is fixedly connected to the intermediate transfer cylinder 8. The large drive gear ring 40 meshes with the small transmission gear ring 41. An auxiliary rotation operation ring 42 is fixedly connected to the large drive gear ring 40 to facilitate the operation of the rotation drive of the intermediate transfer cylinder 8.

[0048] In summary, the operating principle of this surface treatment device for steel structures is as follows: First, connect the fixed cylinder 5 to an external air compressor and the inner extension pipe to an external air suction machine. Once the air compressor starts, high-pressure air is supplied to the fixed cylinder 5. Once the air suction machine starts, it provides negative pressure suction to the inner extension cylinder 7. Next, sand and gravel are loaded into the sand storage assembly. The relative position of the sand storage assembly to the dome housing 2 is adjusted according to the area of ​​the steel structure to be treated, ensuring that the sand and gravel stored in the sand storage assembly is always higher than the fixed cylinder 5. Then, the dome housing 2 is placed against the surface of the steel structure to be treated. The air suction machine and air compressor are started first. The high-pressure air supplied to the fixed cylinder 5 is guided by the transfer cylinder 8 and the inclined pipe 10 and then sent into multiple sandblasting pipes 9. Due to the action of the high-pressure air, the sand and gravel flowing into the fixed cylinder 5 under its own gravity are blown away. Multiple sandblasting pipes 9 are inserted into the steel structure, and multiple baffles 1 can divert and guide the high-pressure air and sand, thereby improving the uniformity of the sand carried by the high-pressure air ejected from the multiple sandblasting pipes 9. The sand ejected from the sandblasting pipes 9 will maintain its own momentum and impact the steel structure surface to be treated, thus forming a sandblasting treatment operation on the steel structure surface. The operation of the air suction machine creates a negative pressure in the inner extension cylinder 7. Through the connection effect of the outer extension cylinder 11, the connecting slide 15 and the middle pipe 16, the operation of the air suction machine will also create a negative pressure in the recovery rack 14. The negative pressure recovery rack 14 will adsorb the area near the steel structure surface to achieve the effect of adsorbing and recovering the material on the steel structure surface. By rotating the central rotating cylinder 8, multiple sandblasting pipes 9 can be synchronously rotated in the circular housing 2 to facilitate sandblasting operations on the area covered by the circular housing 2 relative to the steel structure surface.

[0049] Furthermore, the rotation of the transfer cylinder 8 simultaneously causes the outer extension cylinder 11 to rotate synchronously. The rotation of the outer extension cylinder 11, through the sliding frame 12, causes the recovery frame 14 to rotate. The rotation of the recovery frame 14 cleans the area covered by the circular housing 2 relative to the steel structure surface. The working area of ​​the recovery frame 14 alternates with the working area of ​​the sandblasting pipe 9, with minimal mutual interference. Sandblasting and cleaning operations can be performed alternately in a cyclical manner, making it more practical. The process of adjusting the relative position of the sand storage assembly relative to the circular housing 2 is as follows: Figure 1For reference, firstly, by pushing the operating lever 39 to the left, the limiting frame 32 is rotated relative to the circular housing 2, so that the limiting ridge 37 disengages from the originally inserted limiting groove 38. In this state, the support rod 33 can be slidably adjusted relative to the support cylinder 31. Due to the connection between the sliding shaft 36 and the connecting plate 34, the movement of the support rod 33 can change the position of the sand storage bottle 26, thereby realizing the rotational adjustment between the pipe rack 28 and the rotating seat 29. Keeping the sand storage bottle 26 higher than the fixed cylinder 5 allows the sand and gravel in the sand storage bottle 26 to slide into the fixed cylinder 5 under its own weight. Furthermore, by adjusting the sand storage bottle 26, the inclination slope of the pipe rack 28 can be achieved. The slope of the pipe rack 28 is adjusted so that the sand flows into the fixed cylinder 5 faster when the slope is greater, and the sand flows into the fixed cylinder 5 slower when the slope of the pipe rack 28 is smaller. Therefore, by controlling the slope of the pipe rack 28, the amount of sand fed into the fixed cylinder 5 per unit time and the on / off control of the sand feeding can be achieved. After the sand storage bottle 26 is adjusted, the pushing force acting on the operating rod 39 is released. Under the action of the limit spring 35, the limit frame 32 rotates in the opposite direction to reset, so that the limit ridge 37 re-enters the new limit groove 38, that is, the sand storage bottle 26 is re-limited after adjustment. The rotation operation of the transfer cylinder 8 requires the operator to hold the fixed hand ring 3 with one hand. The other hand holds the auxiliary rotation operating ring 42, and the hand holding the auxiliary rotation operating ring 42 forms an auxiliary rotation drive for the auxiliary rotation operating ring 42, thereby realizing the rotation drive of the large drive gear ring 40. Since the large drive gear ring 40 and the small transmission gear ring 41 mesh with each other, the rotation of the large drive gear ring 40 can realize the rotation drive of the small transmission gear ring 41. Because the diameter of the large drive gear ring 40 is larger than the diameter of the small transmission gear ring 41, the transmission ratio between the large drive gear ring 40 and the small transmission gear ring 41 is large. By rotating the auxiliary rotation operating ring 42 by a small amplitude, the small transmission gear ring 41 can be rotated a full circle, so as to facilitate the sandblasting pipe 9 and the recovery frame 14 to the inside of the circular cover shell 2. The large drive gear ring 40, which forms a complete coverage, can achieve multiple reciprocating rotations of the small transmission gear ring 41 by reciprocating rotation, thereby completing the local sandblasting treatment on the surface of the steel structure. When the surface of the steel structure needs to be sandblasted over a larger area, the operator only needs to apply a lifting force to the surface treatment device for the steel structure by fixing the hand ring 3, controlling the support rotating ring 22 to separate from the surface of the steel structure, and then moving it relative to the surface of the steel structure while maintaining the separation, and then resting the support rotating ring 22 against the surface of the steel structure again to form another area of ​​sandblasting on the surface of the steel structure. This process is repeated until the entire surface of the steel structure that needs to be treated is completed.

[0050] It will be apparent to those skilled in the art that the present 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 in all respects as exemplary and non-limiting, 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 present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] 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 surface treatment device for steel structures, comprising a plurality of baffles (1), characterized in that, It also includes the main structure and the sandblasting structure; The main structure includes a circular cover shell (2), a fixed hand ring (3) is fixedly connected to the top of the circular cover shell (2), a central hole is opened at the center of the top of the circular cover shell (2), a bent rod frame (4) is fixedly connected to the circular cover shell (2), a fixed cylinder frame (5) is fixedly connected to the bent rod frame (4), an external extension hole (6) is opened on the fixed cylinder frame (5), an internal extension cylinder (7) is fixedly connected inside the external extension hole (6), and a sand storage component is installed on the fixed cylinder frame (5). The sandblasting structure includes a central rotating cylinder (8) and multiple sandblasting pipes (9). The central rotating cylinder (8) is rotatably connected to the central hole and is rotatably connected to the fixed cylinder frame (5). The central rotating cylinder (8) is connected to an inclined pipe (10). The multiple sandblasting pipes (9) are all connected to the inclined pipe (10). The multiple baffles (1) are respectively fixedly connected to the multiple sandblasting pipes (9) except for the one sandblasting pipe (9) connected to the bottom opening of the inclined pipe (10). All are inserted into the inclined tube (10), the inclined tube (10) is fixedly connected to the outer tube (11), the bottom end of the outer tube (11) is slidably connected to the sliding frame (12), and the sliding frame (12) and the outer tube (11) are connected to the elastic spring (13). The sliding frame (12) is fixedly connected to the recovery frame (14), the recovery frame (14) is connected to the outer tube (11) through the connecting slide (15), the outer tube (11) is connected to the middle tube (16), and the middle tube (16) is rotatably connected to the inner tube (7).

2. The surface treatment device for steel structures according to claim 1, characterized in that: A rotating collection ring (17) is rotatably connected to the circular housing (2), and a fixed collection ring (18) is fixedly connected to the outside of the circular housing (2). The fixed collection ring (18) is rotatably connected to the rotating collection ring (17). An external connecting pipe (19) is connected to the fixed collection ring (18), and the external connecting pipe (19) is connected to the inner extension cylinder (7). Multiple side openings (20) are provided on the circular housing (2), and all of the multiple side openings (20) are connected to the rotating collection ring (17). A synchronization ring (21) is rotatably connected to the bottom end of the circular housing (2). The synchronization ring (21) is fixedly connected to the rotating collection ring (17), and the synchronization ring (21) is fixedly connected to the recycling rack (14).

3. The surface treatment device for steel structures according to claim 2, characterized in that: The bottom end of the synchronization ring (21) is rotatably connected to a supporting rotating ring (22).

4. The surface treatment device for steel structures according to claim 1, characterized in that: The recycling rack (14) has two slopes (23), and multiple recycling holes (24) are provided on both slopes (23). A scraper (25) is fixedly connected to the bottom of the recycling rack (14).

5. The surface treatment device for steel structures according to claim 1, characterized in that: The sand storage assembly includes a sand storage bottle (26), which has a replenishment port and a detachable cap (27) installed on the replenishment port. The sand storage bottle (26) is connected to a pipe rack (28). The fixed cylinder rack (5) has an installation hole, and a rotating seat (29) is fixedly connected in the installation hole. The rotating seat (29) has a feeding port (30), and the pipe rack (28) is rotatably connected in the rotating seat (29).

6. The surface treatment device for steel structures according to claim 5, characterized in that: A limiting support assembly is installed on the circular housing (2). The limiting support assembly includes a support cylinder (31) and a limiting frame (32). The support cylinder (31) is fixedly connected to the circular housing (2). A support rod (33) is slidably connected inside the support cylinder (31). Two connecting plates (34) are fixedly connected to the sand storage bottle (26). Both connecting plates (34) are connected to the support rod (33). The limiting frame (32) is rotatably connected to the circular housing (2). A limiting spring (35) is fixedly connected to the limiting frame (32). The limiting spring (35) is fixedly connected to the support cylinder (31). The limiting frame (32) is used for auxiliary limiting of the support rod (33).

7. The surface treatment device for steel structures according to claim 6, characterized in that: Both of the connecting plates (34) are provided with elongated grooves, and both of the elongated grooves are provided with sliding connecting shafts (36), and both of the sliding connecting shafts (36) are fixedly connected to the support rod (33).

8. A surface treatment device for steel structures according to claim 6, characterized in that: The limiting frame (32) is provided with a limiting ridge (37), and the support rod (33) is provided with a plurality of limiting grooves (38) that match the limiting ridge (37). An operating rod (39) is fixedly connected to the limiting frame (32).

9. A surface treatment device for steel structures according to claim 1, characterized in that: A large drive gear ring (40) is rotatably connected to the circular housing (2), and a small transmission gear ring (41) is fixedly connected to the central rotating cylinder (8). The large drive gear ring (40) meshes with the small transmission gear ring (41), and an auxiliary rotating operating ring (42) is fixedly connected to the large drive gear ring (40).

10. An operating method for a surface treatment device for steel structures, characterized in that, The surface treatment apparatus for steel structures according to any one of claims 1-9 includes the following steps: S1. When in use, first connect the fixed cylinder frame (5) to the outside air compressor and connect the inner extension pipe to the outside air intake. When the air compressor starts, it can send high-pressure air into the fixed cylinder frame (5). When the air intake starts, it can provide negative pressure suction to the inner extension cylinder (7). Then, fill the sand storage component with gravel. Adjust the relative position of the sand storage component to the round cover shell (2) according to the part of the steel structure that needs to be treated, so as to ensure that the gravel stored in the sand storage component is always higher than the fixed cylinder frame (5). S2. Next, place the round cover shell (2) against the surface of the steel structure to be treated. Start the air intake and air compressor. The high-pressure air sent into the fixed cylinder (5) will be guided by the transfer cylinder (8) and the inclined tube (10) and sent into multiple sandblasting pipes (9). Due to the action of the high-pressure air, the sand and gravel flowing into the fixed cylinder (5) under its own gravity will be blown into multiple sandblasting pipes (9). Multiple baffles (1) can divert and guide the high-pressure air and sand and gravel, thereby improving the uniformity of the high-pressure air carrying sand and gravel sprayed out of multiple sandblasting pipes (9). The sand and gravel sprayed out from the sandblasting pipe (9) will maintain its own momentum and impact the surface of the steel structure to be treated, thereby forming a sandblasting treatment operation on the surface of the steel structure. S3. The operation of the suction machine creates a negative pressure inside the inner extension cylinder (7). Through the connection effect of the outer extension cylinder (11), the connecting slide (15) and the middle tube (16), the operation of the suction machine will also create a negative pressure in the recovery rack (14). The negative pressure recovery rack (14) will adsorb the area near the steel structure surface to achieve the effect of adsorbing and recovering the material on the steel structure surface. By rotating the central rotating cylinder (8), multiple sandblasting pipes (9) can be synchronously rotated inside the round cover shell (2) to facilitate sandblasting operations on the area covered by the round cover shell (2) relative to the steel structure surface. S4. The rotation of the transfer cylinder (8) will also cause the extension cylinder (11) to rotate synchronously. The rotation of the extension cylinder (11) will cause the rotation of the recovery rack (14) through the sliding frame (12). The rotation of the recovery rack (14) will clean the area covered by the round shell (2) relative to the steel structure surface. The working area of ​​the recovery rack (14) and the working area of ​​the sandblasting pipe (9) will alternate. The two will have little mutual influence. The sandblasting operation and the cleaning operation can be carried out alternately in a cycle, which is more practical.

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