Steel structure rust removal device

Abstract

The invention relates to the technical field of steel structure rust removal, and discloses a steel structure rust removal device which comprises a base, the upper surface of the base is fixedly connected with a first shell, the two sides of the first shell are fixedly connected with second shells used in cooperation with the first shell, and the inner wall of the top of the first shell is provided with a first grinding assembly for removing rust on the surface of a steel plate. A second grinding assembly for removing rust on the two sides of the steel plate is arranged on the base, and a righting assembly for supporting the steel plate is arranged between the inner walls of the two sides of the second shell. According to the device, the surface and the two sides of a steel plate can be polished at the same time, only one-time overturning is needed, then the rust removal efficiency of the device on the surface of the steel plate is greatly improved, dust generated in the polishing process can be absorbed, and the situation that dust diffusion causes pollution to the environment and threatens the breathing health of operators is prevented; meanwhile, the risk of dust explosion is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure rust removal, and specifically provides a steel structure rust removal device. Background Art

[0002] A steel structure is a structure composed of steel materials and is one of the main building structure types. The structure is mainly composed of steel beams, steel plates, steel columns, steel trusses and other components made of section steel and steel plates, and rust removal and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are adopted.

[0003] Among them, as an important industrial raw material, during the production and storage of steel plates, affected by environmental humidity, oxygen and other corrosive media, an oxide layer is easily formed on the surface. Rust not only affects the aesthetics of the steel plate, but also reduces its mechanical properties and service life. Therefore, surface rust removal treatment must be carried out before subsequent processing: After retrieval, a Chinese patent with the publication number CN220029757U discloses a steel structure rust removal device. By controlling the start of the motor, the device drives a rust removal brush to move horizontally, so that the device can rust-remove the surface of the steel structure, making the device better rust-remove the steel structure and increasing the applicability of the device. However, there are still the following problems: 1. When the device rust-removes the surface of the steel plate, it can only rust-remove one side at a time and needs to be flipped multiple times to achieve thorough rust removal, which greatly increases the rust removal time and reduces the rust removal work efficiency; 2. During the grinding process, a large amount of metal dust and rust slag are generated and are easily suspended in the air, which not only pollutes the working environment but also may pose an explosion risk. If the steel plate surface contains coatings or heavy metal pollutants, grinding will cause them to spread in the form of dust, threatening the respiratory health of operators, and long-term exposure may lead to occupational diseases. Summary of the Invention

[0004] Technical Problems to be Solved In view of the deficiencies of the prior art, the present invention provides a steel structure rust removal device, mainly to solve the problems that when the device rust-removes the surface of the steel plate, it can only rust-remove one side at a time and needs to be flipped multiple times to achieve thorough rust removal, which greatly increases the rust removal time and reduces the rust removal work efficiency, and during the grinding process, a large amount of metal dust and rust slag are generated and are easily suspended in the air, which not only pollutes the working environment but also may pose an explosion risk. If the steel plate surface contains coatings or heavy metal pollutants, grinding will cause them to spread in the form of dust, threatening the respiratory health of operators, and long-term exposure may lead to occupational diseases.

[0005] Technical Solutions To achieve the above object, the present invention provides the following technical solutions: A rust removal device for steel structures comprises a base, wherein a shell 1 is fixedly connected to the upper surface of the base, and shells 2 used in conjunction with the shell 1 are fixedly connected to both sides of the shell 1, a grinding component 1 for removing rust from the surface of a steel plate is provided on the top inner wall of the shell 1, a grinding component 2 for removing rust from both sides of the steel plate is provided on the base, a straightening component for supporting the steel plate is provided between the inner walls on both sides of the shell 2, a dust suction component for absorbing dust is provided on the shell 1, a spraying component for spraying medicine is provided between the inner walls on both sides of the shell 1, and transmission components for enabling them to work are provided on the grinding component 1, the grinding component 2 and the straightening component.

[0006] Furthermore, the grinding component 1 includes an electric push rod fixedly connected to the top outer wall of the shell 1, the output end of the electric push rod passes through the top inner wall of the shell 1 and is fixedly connected to a U-shaped plate, a grinding roller 1 is rotatably connected between the inner walls on both sides of the U-shaped plate, and an L-shaped plate is fixedly connected to one side of the top outer wall of the U-shaped plate.

[0007] Based on the above scheme, two symmetrical guide rods are fixedly connected to the top outer wall of the U-shaped plate, and the top ends of the two guide rods pass through the top outer wall of shell one and are slidably connected thereto, and the top ends of the guide rods are fixedly connected to a limiting block.

[0008] As a further solution of the present invention, the second grinding component includes a connecting frame fixedly connected between the inner walls on both sides of the base and located in the middle position, and two symmetrical rotating rods are rotatably connected to the top outer wall of the connecting frame, and the bottom ends of the two rotating rods pass through the bottom outer wall of the connecting frame, and the top ends of the two rotating rods are fixedly connected to grinding roller 2.

[0009] Furthermore, the straightening assembly includes two sliding rods symmetrically fixedly connected between the inner walls on both sides of the shell, and two symmetrical fixed blocks are slidably connected to the two sliding rods. One side of the two fixed blocks on the same side is fixedly connected to a frame, and two symmetrical rotating wheels are rotatably connected to the bottom outer wall of the frame, and the axes of the rotating wheels pass through the top outer wall of the frame.

[0010] On the basis of the above scheme, the upper surfaces of the two frames are fixedly connected with fixed blocks 2, and a bidirectional screw is rotatably connected between the inner walls on both sides of the shell 2, and the bidirectional screw passes through the two fixed blocks 2 and is threadedly connected thereto, and the two ends of the bidirectional screw respectively pass through the outer walls on both sides of the shell 2 and are fixedly connected with a rotating disk.

[0011] As a further solution of the present invention, the dust suction assembly includes a dust collection box fixedly connected to the outer wall of the top of the first housing. On one side of the dust collection box, there are two symmetrically arranged suction fans. Below the dust collection box, there is a connecting pipe rack passing through the inner wall of the top of the first housing. At the bottom end of the connecting pipe rack, there is a suction head used in cooperation with it. The suction head is provided with suction ports on multiple side surfaces. On the upper surface of the suction head, there are two symmetrically arranged L-shaped frames, and the opposite sides of the two L-shaped frames are respectively fixed to the inner walls of the two sides of the first housing.

[0012] Furthermore, the spraying assembly includes liquid pipes fixedly connected to the inner walls of the two sides of the first housing. The two ends of the liquid pipes respectively pass through the outer walls of the two sides of the first housing and are provided with connectors. On the circumferential outer wall of the liquid pipes, there are multiple spray heads one used in cooperation with it. On the circumferential outer wall of the liquid pipes and at positions close to both ends, there are inclined spray heads two.

[0013] On the basis of the foregoing solution, the transmission assembly includes a motor and a belt pulley.

[0014] Beneficial effects Compared with the prior art, the present invention provides a steel structure rust removal device, which has the following beneficial effects: 1. By using the grinding assembly one and the grinding assembly two in cooperation, the present invention can simultaneously grind the surface and both sides of the steel plate, and only one flip is required, thereby greatly increasing the rust removal efficiency of the device for the surface of the steel plate.

[0015] 2. By providing the straightening assembly, the present invention can straighten both sides of the steel plate while feeding the steel plate into the first housing for grinding, preventing it from being skewed during the processing, and thus avoiding the situation of incomplete grinding and rust removal.

[0016] 3. By providing the bidirectional lead screw, the present invention can facilitate the staff to move the two frames simultaneously, thereby ensuring that the steel plate is in the middle position between the two frames while on the conveyor belt.

[0017] 4. By providing the dust suction assembly, the present invention can absorb the dust generated during the grinding process, prevent the dust from spreading and polluting the environment, threatening the respiratory health of the operators, and at the same time avoid the risk of dust explosion.

[0018] 5. By providing the spraying assembly, the present invention sprays a dilute hydrochloric acid solution with a concentration of 10 - 20% onto the surface of the steel plate. The strong acidity of the dilute hydrochloric acid dissolves the thick rust layer and removes the rust spots in the pits that cannot be reached by the grinding of the steel plate surface, thereby more thoroughly removing the rust spots on the steel plate surface. Description of the drawings

[0019] Figure 1Schematic three-dimensional structure diagram of a steel structure rust removal device proposed by the present invention; Figure 2 Schematic internal structure diagram of housing one of a steel structure rust removal device proposed by the present invention; Figure 3 Schematic structure diagram of grinding assembly one of a steel structure rust removal device proposed by the present invention; Figure 4 Schematic structure diagram of grinding assembly two of a steel structure rust removal device proposed by the present invention; Figure 5 Schematic structure diagram of the alignment assembly of a steel structure rust removal device proposed by the present invention; Figure 6 Schematic structure diagram of the dust suction assembly of a steel structure rust removal device proposed by the present invention; Figure 7 Schematic structure diagram of the spraying assembly of a steel structure rust removal device proposed by the present invention.

[0020] In the figure: 1, base; 2, housing one; 3, housing two; 4, grinding assembly one; 401, electric push rod; 402, U-shaped plate; 403, grinding roller one; 404, L-shaped plate; 405, guide rod; 406, limit block; 5, grinding assembly two; 501, connecting frame; 502, rotating rod; 503, grinding roller two; 6, alignment assembly; 601, sliding rod; 602, fixed block one; 603, frame; 604, rotating wheel; 605, bidirectional lead screw; 606, rotating disc; 607, fixed block two; 7, dust suction assembly; 701, dust collection box; 702, suction fan; 703, connecting pipe rack; 704, dust suction head; 705, dust suction port; 706, L-shaped frame; 8, spraying assembly; 801, liquid pipe; 802, nozzle one; 803, nozzle two; 804, joint; 9, transmission assembly; 901, motor; 902, belt pulley. Detailed implementation manners

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further details the present invention through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Reference Figures 1-7 A steel structure rust removal device comprises a base 1, the upper surface of the base 1 is fixedly connected with a shell 2 by bolts, both sides of the shell 2 are fixedly connected with shells 3 used in conjunction with it by bolts, a grinding component 4 for rust removal on the surface of the steel plate is provided on the top inner wall of the shell 2, a grinding component 2 5 for rust removal on both sides of the steel plate is provided on the base 1, a straightening component 6 for supporting the steel plate is provided between the inner walls on both sides of the shell 2 3, a dust suction component 7 for absorbing dust is provided on the shell 2, a spraying component 8 for spraying medicine is provided between the inner walls on both sides of the shell 2, and the grinding component 4, the grinding component 2 5 and the straightening component 6 are all provided with a transmission component for enabling them to work The driving component 9 includes a motor 901 and a pulley 902. When the rust on the surface of the steel plate needs to be removed, the steel plate is first placed on the base 1, and the steel plate is sent to the shell 2 through the straightening component 6. During this process, the medicine is sprayed on the surface of the steel plate through the spraying component 8, which can be a hydrochloric acid solution. When passing through the middle part, the surface and both sides of the steel plate are polished respectively by the grinding component 1 4 and the grinding component 2 5. The dust generated during the grinding process is absorbed by the dust suction component 7, and then sent out through the straightening component 6 on the other side, and then turned over and sent back into the device, and then the rust on the surface and both sides can be completely removed by grinding and rust removal again.

[0025] In the present invention, the first grinding assembly 4 includes an electric push rod 401 fixedly connected to the outer wall of the top of the first housing 2 by bolts. The output end of the electric push rod 401 passes through the inner wall of the top of the first housing 2 and is fixedly connected to a U-shaped plate 402 by bolts. A first grinding roller 403 is rotatably connected between the inner walls on both sides of the U-shaped plate 402, and one end of the first grinding roller 403 passes through one side of the U-shaped plate 402. One side of the outer wall of the top of the U-shaped plate 402 is fixedly connected to an L-shaped plate 404 by bolts. Two pulleys 902 in the transmission assembly 9 are rotatably connected to one side of the L-shaped plate 404 and the other is fixed to one end of the first grinding roller 403. The motor 901 is fixedly connected to one side of the L-shaped plate 404 by bolts, and the output end of the motor 901 passes through one side of the L-shaped plate 404 and is fixed to the pulley 902 thereon. The two pulleys 902 are connected by a belt drive. Two symmetrical guide rods 405 are fixedly connected to the outer wall of the top of the U-shaped plate 402 by bolts, and the tops of the two guide rods 405 pass through the outer wall of the top of the first housing 2 and are slidably connected thereto. The top of the guide rod 405 is fixedly connected to a limit block 406 by bolts. The second grinding assembly 5 includes a connecting frame 501 fixedly connected between the inner walls on both sides of the base 1 and located in the middle position. Two symmetrical rotating rods 502 are rotatably connected to the outer wall of the top of the connecting frame 501, and the bottoms of the two rotating rods 502 pass through the outer wall of the bottom of the connecting frame 501. The tops of the two rotating rods 502 are fixedly connected to second grinding rollers 503 by bolts. Two pulleys 902 in the transmission assembly 9 are respectively fixed on the circumferential outer walls of the two rotating rods 502 located in the connecting frame 501 and are connected by a belt drive. The motor 901 is fixedly connected to the outer wall of the bottom of the connecting frame 501 by bolts and the output end is fixed to one of the rotating rods 502. When passing through the first grinding assembly 4, first start the electric push rod 401 to extend. During its extension process, it will drive the U-shaped plate 402 at its bottom to move downward, thereby driving the first grinding roller 403 to move downward. When the first grinding roller 403 contacts the steel plate, start the motor 901 thereon to drive the pulley 902 to rotate, thereby making the first grinding roller 403 rotate at a high speed, and then grinding and rust-removing the surface of the steel plate. At the same time, it will pass through the second grinding assembly 5. By starting the motor 901 on the second grinding assembly 5 to drive the pulley 902 to rotate, the rotating rod 502 will rotate at a high speed, and then the second grinding roller 503 thereon will rotate at a high speed to grind both sides of the steel plate. By using the first grinding assembly 4 and the second grinding assembly 5 in cooperation, the surface and both sides of the steel plate can be ground simultaneously, and only one flip is required, thereby greatly increasing the rust-removing efficiency of the device for the surface of the steel plate.

[0026] To prevent the processed steel plate from deflecting, the straightening assembly 6 includes two symmetrical sliding rods 601 fixedly connected between the inner walls of the two sides of the shell 2 3 by bolts, and two symmetrical fixed blocks 602 are slidably connected to the two sliding rods 601. One side of the two fixed blocks 602 on the same side is fixedly connected to the frame 603 by bolts. Two symmetrical rotating wheels 604 are rotatably connected to the bottom outer wall of the frame 603, and the axes of the rotating wheels 604 pass through the top outer wall of the frame 603. The two pulleys 902 in the transmission assembly 9 are respectively connected to the axes of the rotating wheels 604 located in the frame 603. The motor 901 is fixed to the top outer wall of the frame 603 and one end of the output shaft is fixed to one of the axes. The upper surfaces of the two frames 603 are fixedly connected to fixed blocks 2 607 by bolts. A bidirectional screw rod 605 is rotatably connected between the inner walls of the two sides of the shell 2 3, and the bidirectional screw rod 605 passes through the two fixed blocks 2 607 and is threadedly connected to them. The two ends of the bidirectional screw rod 605 respectively pass through the shell 2 3 The outer walls on both sides are fixedly connected with a rotating disk 606 by bolts. When the steel plate is sent into the shell 2 3, the bidirectional screw rod 605 is first rotated to drive the two frames 603 to move in the direction away from each other, and then the steel plate is placed between the two frames 603. The bidirectional screw rod 605 is rotated in the opposite direction to drive the two frames 603 to move in the direction close to each other. When the rotating wheel 604 thereon contacts the two ends of the steel plate, the motor 901 on the straightening component 6 is then started to drive the pulley 902 to rotate, thereby causing the rotating wheel 604 to rotate, thereby sending the steel plate into the shell 1 2 for operation. Through the straightening component 6, the steel plate can be straightened on both sides while being sent into the shell 1 2 for grinding, so as to prevent it from being skewed during the processing process, thereby causing incomplete grinding and rust removal. The bidirectional screw rod 605 can facilitate the staff to move the two frames 603 at the same time, thereby ensuring that the steel plate is in the middle position of the two frames 603 while being conveyed.

[0027] To facilitate the collection of the dust generated during grinding, the dust suction assembly 7 includes a dust collection box 701 fixedly connected to the outer wall of the top of the first housing 2 by bolts. On one side of the dust collection box 701, there are two symmetrically arranged suction fans 702. Below the dust collection box 701, there is a connecting pipe rack 703 passing through the inner wall of the top of the first housing 2. At the bottom end of the connecting pipe rack 703, there is a dust suction head 704 cooperating with it. A plurality of suction openings 705 are formed on multiple sides of the dust suction head 704. On the upper surface of the dust suction head 704, there are two symmetrically arranged L-shaped frames 706 fixedly connected by bolts, and the opposite sides of the two L-shaped frames 706 are respectively fixed to the inner walls of the two sides of the first housing 2. When grinding and removing rust from the surface of the steel plate, start the two suction fans 702. The dust generated is sucked into the dust suction head 704 through the suction openings 705 on the dust suction head 704, then sucked into the dust collection box 701 through the connecting pipe rack 703 for storage. Through the provided dust suction assembly 7, the dust generated during the grinding process can be absorbed, preventing the spread of dust from polluting the environment and threatening the respiratory health of the operators, and at the same time avoiding the risk of dust explosion.

[0028] To further facilitate the rust removal operation, the spraying assembly 8 includes liquid pipes 801 welded to the inner walls of the two sides of the first housing 2. The two ends of the liquid pipes 801 respectively pass through the outer walls of the two sides of the first housing 2 and are provided with connectors 804. A plurality of first nozzles 802 cooperating with the liquid pipes 801 are arranged on the circumferential outer wall of the liquid pipes 801. On the circumferential outer wall of the liquid pipes 801 and at positions close to both ends, there are inclined second nozzles 803. Connect the connector 804 to the pipeline containing a dilute hydrochloric acid solution with a concentration of 10 - 20% outside. Before sending the steel plate into the first housing 2 for grinding, spray the dilute hydrochloric acid solution with a concentration of 10 - 20% evenly onto the surface of the steel plate through the nozzles on the liquid pipes 801. By means of the provided spraying assembly 8, the dilute hydrochloric acid solution with a concentration of 10 - 20% is sprayed onto the surface of the steel plate. The strong acidity of the dilute hydrochloric acid dissolves the thick rust layer and removes the rust spots in the pits that cannot be reached by the grinding of the steel plate surface, thus more thoroughly removing the rust spots on the surface of the steel plate.

[0029] The present invention is used in the following steps: S1: When it is necessary to remove the rust spots on the surface of the steel plate, first place the steel plate on the base 1, and send the steel plate into the first housing 2 through the alignment assembly 6. During this process, spray the liquid medicine onto the surface of the steel plate through the spraying assembly 8, which can be hydrochloric acid solution. When passing through the middle part, grind the surface and both sides of the steel plate respectively through the first grinding assembly 4 and the second grinding assembly 5. The dust generated during the grinding process is absorbed by the dust suction assembly 7, and then sent out through the alignment assembly 6 on the other side. Subsequently, turn it over and send it into the device again, and then grind and remove rust again to completely remove the rust spots on its surface and both sides; S2: When sending the steel plate into the second housing 3, first rotate the bidirectional lead screw 605 to drive the two frames 603 to move away from each other, then place the steel plate between the two frames 603, reverse-rotate the bidirectional lead screw 605 to drive the two frames 603 to move closer to each other, and when the rotating wheels 604 thereon contact both ends of the steel plate, then start the motor 901 on the alignment component 6 to drive the belt pulley 902 to rotate, thereby making the rotating wheels 604 rotate, and then send the steel plate into the first housing 2 for operation; S3: Connect the joint 804 to the pipeline outside containing a dilute hydrochloric acid solution with a concentration of 10 - 20%, and evenly spray the dilute hydrochloric acid solution with a concentration of 10 - 20% onto the surface of the steel plate through the nozzle on the liquid pipe 801 before sending the steel plate into the first housing 2 for grinding; S4: When passing through the first grinding component 4, first start the electric push rod 401 to extend. During its extension, it will drive the U-shaped plate 402 at its bottom to move downward, thereby driving the first grinding roller 403 to move downward. When the first grinding roller 403 contacts the steel plate, start the motor 901 thereon to drive the belt pulley 902 to rotate, thereby making the first grinding roller 403 rotate at a high speed, and then grind and remove rust from the surface of the steel plate; S5: At the same time, it will pass through the second grinding component 5. Start the motor 901 on the second grinding component 5 to drive the belt pulley 902 to rotate, thereby making the rotating rod 502 rotate at a high speed, and then make the second grinding roller 503 thereon rotate at a high speed to grind both sides of the steel plate; S6: While grinding and removing rust from the surface of the steel plate, start two suction fans 702, and inhale the generated dust into the suction head 704 through the suction port 705 on the suction head 704, and then inhale it into the dust collection box 701 through the connecting pipe rack 703 for storage.

[0030] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope described in this specification.

[0031] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A steel structure rust removal device, comprising a base (1), characterized in that, The upper surface of the base (1) is fixedly connected with a first housing (2). Both sides of the first housing (2) are fixedly connected with second housings (3) which are used in cooperation with it. On the inner wall of the top of the first housing (2), there is a first grinding assembly (4) for rust removal on the surface of the steel plate. On the base (1), there is a second grinding assembly (5) for rust removal on both sides of the steel plate. Between the inner walls on both sides of the second housing (3), there is a straightening assembly (6) for supporting the steel plate. On the first housing (2), there is a dust suction assembly (7) for dust absorption. Between the inner walls on both sides of the first housing (2), there is a spraying assembly (8) for spraying liquid medicine. On the first grinding assembly (4), the second grinding assembly (5) and the straightening assembly (6), there is a transmission assembly (9) for making them work.

2. The rust removal device for steel structures according to claim 1, wherein The first grinding assembly (4) includes an electric push rod (401) fixedly connected to the outer wall of the top of the first housing (2). The output end of the electric push rod (401) passes through the inner wall of the top of the first housing (2) and is fixedly connected with a U-shaped plate (402). Between the inner walls on both sides of the U-shaped plate (402), a first grinding roller (403) is rotatably connected. On one side of the outer wall of the top of the U-shaped plate (402), an L-shaped plate (404) is fixedly connected.

3. The rust removal device for steel structures according to claim 2, characterized in that, On the outer wall of the top of the U-shaped plate (402), two symmetric guide rods (405) are fixedly connected. The tops of the two guide rods (405) both pass through the outer wall of the top of the first housing (2) and are slidably connected with it. The top of the guide rod (405) is fixedly connected with a limit block (406).

4. A steel structure rust removal device according to claim 1, characterized in that The second grinding assembly (5) includes a connecting frame (501) fixedly connected between the inner walls on both sides of the base (1) and located at the middle position. On the outer wall of the top of the connecting frame (501), two symmetric rotating rods (502) are rotatably connected. The bottoms of the two rotating rods (502) both pass through the outer wall of the bottom of the connecting frame (501). The tops of the two rotating rods (502) are both fixedly connected with second grinding rollers (503).

5. The rust removal device for steel structures according to claim 1, characterized in that, The straightening assembly (6) includes two symmetric sliding rods (601) fixedly connected between the inner walls on both sides of the second housing (3). On both of the two sliding rods (601), two symmetric first fixing blocks (602) are slidably connected. On one side of the two first fixing blocks (602) on the same side, a frame (603) is fixedly connected. On the outer wall of the bottom of the frame (603), two symmetric rotating wheels (604) are rotatably connected. The axis of the rotating wheel (604) passes through the outer wall of the top of the frame (603).

6. A steel structure rust removal device according to claim 5, characterized in that, On the upper surfaces of the two frames (603), second fixing blocks (607) are fixedly connected. Between the inner walls on both sides of the second housing (3), a bidirectional lead screw (605) is rotatably connected. The bidirectional lead screw (605) passes through the two second fixing blocks (607) and is threadedly connected with them. The two ends of the bidirectional lead screw (605) respectively pass through the outer walls on both sides of the second housing (3) and are fixedly connected with rotating disks (606).

7. The rust removal device for steel structures according to claim 2, wherein, The dust collection assembly (7) includes a dust collection box (701) fixedly connected to the outer wall of the top of the first housing (2). On one side of the dust collection box (701), there are two symmetrically arranged suction fans (702). Below the dust collection box (701), there is a connecting pipe rack (703) passing through the inner wall of the top of the first housing (2). At the bottom end of the connecting pipe rack (703), there is a suction head (704) that cooperates with it. A plurality of suction openings (705) are formed on multiple sides of the suction head (704). On the upper surface of the suction head (704), there are two symmetrically arranged L-shaped brackets (706), and the opposite sides of the two L-shaped brackets (706) are respectively fixed to the inner walls of both sides of the first housing (2).

8. The steel structure rust removal device according to claim 2, characterized in that, The spraying assembly (8) includes a liquid pipe (801) fixedly connected to the inner walls of both sides of the first housing (2). The two ends of the liquid pipe (801) respectively pass through the outer walls of both sides of the first housing (2) and are provided with connectors (804). A plurality of nozzles one (802) that cooperate with it are arranged on the circumferential outer wall of the liquid pipe (801). On the circumferential outer wall of the liquid pipe (801) and at positions close to both ends, there are inclined nozzles two (803).

9. A steel structure rust removal device according to claim 1, characterized in that, The transmission assembly (9) includes a motor (901) and a belt pulley (902).

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