A steel structure surface rust removal device

Abstract

The utility model belongs to the steel structure surface treatment technical field especially relates to a steel structure surface rust cleaning device, and this device includes rust removal box, turnover device and rust removal subassembly, and turnover device sets up at rust removal box both ends, including installation guide rail, half rectangle board, carousel and clamping assembly, has set up the rectangular hole on carousel for U -shaped steel passes through, and clamping assembly realizes reliable clamping to U -shaped steel through positioning roller and support roller, rust removal subassembly includes the first polishing unit and second polishing unit of adjustable spacing, and realizes self -adaptation adjustment through left and right screw thread lead screw drive, this device can effectively solve the problem that traditional negative pressure sucking disc is not firm, artificial overturning is difficult, through mechanical clamping and turnover mechanism, has realized U -shaped steel multi -surface rust cleaning processing, solved traditional rust cleaning equipment fixed unreliable, overturning operation difficult, polishing roller eccentric grinding etc. problem, improved rust cleaning efficiency and operation safety.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure surface treatment technology, and in particular relates to a rust removal device for steel structure surfaces. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure mainly consists of steel beams, steel columns, steel trusses, and other components made of shaped steel and steel plates. Steel structure products are widely used in people's daily lives; for example, channel steel, angle steel, and I-beams are commonly used. Channel steel, as a commonly used steel structure component, has a U-shaped cross-section and is widely used in building frames, equipment supports, and other fields. During construction, to prevent rust, its surface needs to be ground to remove rust and debris before applying anti-rust paint.

[0003] The patent with publication number "CN216759400U" discloses a steel structure surface rust removal device, including: a processing table, a frame and a top plate on the top of the processing table, and a movable grinding roller at the bottom of the top plate. The U-shaped steel is adsorbed and fixed by a negative pressure pump and a fixed suction cup, and then the grinding roller removes rust from the inner surface of the channel steel.

[0004] However, the above-mentioned device has problems in use: the channel steel is fixed by a negative pressure suction cup. Due to the rough surface of the channel steel and the presence of rust, the suction cup and the surface of the channel steel cannot form a good seal, resulting in insufficient negative pressure and insecure fixing. This causes the U-shaped steel to shift during the grinding process, which in turn causes uneven grinding of the grinding roller. When it is necessary to remove rust from the bottom surface of the channel steel, the channel steel must be manually turned over, which is difficult to operate and poses a safety hazard. Utility Model Content

[0005] In view of the technical problems existing in the background art, the present invention provides a rust removal device for steel structure surface.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: A rust removal device for steel structure surfaces includes a rust removal box and a U-shaped steel, with a flipping device fixedly connected to both ends of the rust removal box; The flipping device includes two symmetrically arranged mounting rails. The inner walls of the mounting rails are slidably connected to two symmetrically arranged semi-rectangular plates. The two semi-rectangular plates are provided with semi-annular holes. The inner walls of the semi-annular holes are provided with annular grooves. The inner walls of the annular grooves are rotatably connected to a turntable. The turntable is provided with rectangular holes. The outer walls of the turntable are also fixedly connected to two clamping components for positioning the U-shaped steel. The rust removal chamber is equipped with a rust removal component, which is used to grind and remove rust from the U-shaped steel that is fed along its length. Optionally, a flip handle is fixedly connected to the outer end face of the turntable. A positioning rod is inserted through the outer end of the flip handle. Several positioning holes matching the positioning rod are opened at the outer end of the semi-rectangular plate. A locking pin is also inserted through the outer end of the positioning rod. The positioning rod is inserted into the positioning hole and the flip device is locked and positioned by the locking pin. Two symmetrically arranged fixing frames are fixedly connected to the other end face of the turntable. A support roller is rotatably connected inside the fixing frame.

[0007] Optionally, the clamping assembly includes a support frame fixedly connected to the turntable, a clamping guide rail fixedly connected to the inner wall of the support frame, a support arm slidably connected to the inner wall of the clamping guide rail, and a through hole opened at the outer end of the support arm, with a positioning roller rotatably connected inside the through hole.

[0008] Optionally, a drive plate is fixedly connected to the inner wall of the support frame. A through hole is opened in the middle of the drive plate. A drive nut is rotatably connected in the through hole. A threaded rod is fixedly connected to the outer end of the drive nut. The threaded rod passes through the support frame and is threadedly connected to the support frame. A handwheel is fixedly connected to the outer end of the threaded rod.

[0009] Optionally, the rust removal assembly includes several lifting guide rails fixedly connected to the top of the rust removal box. The inner wall of the lifting guide rails is slidably connected to a first grinding unit and a second grinding unit. The first grinding unit includes two first mounting brackets slidably connected to the lifting guide rails. The top of the first mounting bracket is fixedly connected to a first drive motor. The output shaft of the first drive motor is fixedly connected to a first rust removal roller through a coupling. The outer ends of the two first mounting brackets are fixedly connected to a first lead screw nut.

[0010] Optionally, the second grinding unit includes two second mounting brackets that are slidably connected to the inner wall of the lifting guide rail. A second drive motor is fixedly connected to the bottom end of the second mounting bracket. A second rust removal roller is fixedly connected to the output shaft of the second drive motor through a coupling. A second lead screw nut is fixedly connected to the outer end of each of the two second mounting brackets.

[0011] Optionally, a drive motor is fixedly connected to the top of the rust removal box via a mounting plate. The output shaft of the drive motor is fixedly connected to a main lead screw. The main lead screw is rotatably connected to a driven lead screw via a timing pulley and a timing belt. Support bearings are rotatably connected to the bottom of the main and driven lead screws. The support bearings are fixedly connected to the bottom of the rust removal box. The upper half of the main and driven lead screws is a left-hand threaded section, and the lower half is a right-hand threaded section. The left-hand threaded section is threadedly connected to the first lead screw nut, and the right-hand threaded section is threadedly connected to the second lead screw nut. Rotating the main lead screw can drive the first and second mounting brackets to move closer or further apart.

[0012] Optionally, a dust extraction hood is fixedly connected between the two first mounting brackets, and a negative pressure pipe is fixedly connected to the top of the dust extraction hood. The negative pressure pipe passes through the top of the rust removal box and is connected to the negative pressure equipment. A collection hood is fixedly connected between the two second mounting brackets.

[0013] This utility model has the following advantages and beneficial effects: This invention achieves precise positioning and multi-faceted flipping of U-shaped steel by setting up a flipping device and clamping components. By setting up dual grinding units with adjustable spacing, combined with left and right threaded screws and servo motor drive, the stability of the workpiece position during rust removal is ensured. Compared with the negative pressure suction cup fixing method in the prior art, it avoids the problems of poor sealing and unstable fixing caused by surface roughness and rust. It realizes continuous operation of clamping, rust removal, flipping, and re-rust removal processes, improving rust removal efficiency. Through the double-end clamping design, when the U-shaped steel passes through the rust removal area, the inlet and outlet ends provide reliable constraints at the same time, ensuring the continuity and positional stability of the rust removal process, avoiding uneven wear of the grinding roller, and extending the service life of the rust removal components. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the steel structure surface rust removal device of this utility model; Figure 2 This is a partial view of the steel structure surface rust removal device of this utility model; Figure 3 This is a structural diagram of the flipping device of this utility model; Figure 4 This is a partial view of the flipping device of this utility model; Figure 5 This is a structural diagram of the clamping assembly of this utility model; Figure 6 This is a structural diagram of the rust removal component of this utility model; Figure 7 This is a partial view of the rust removal component of this utility model; Figure 8 This is a top view of the steel structure surface rust removal device of this utility model; Figure 9 This utility model Figure 8 A cross-sectional view along the AA direction.

[0015] Attached reference numerals: 1. Rust removal box; 2. U-shaped steel; 3. Mounting guide rail; 4. Semi-rectangular plate; 5. Semi-circular hole; 6. Annular groove; 7. Turntable; 8. Rectangular hole; 9. Flip handle; 10. Positioning rod; 11. Positioning hole; 12. Locking pin; 13. Fixing frame; 14. Support roller; 1501. Support frame; 1502. Clamping guide rail; 1503. Support arm; 1504. Positioning roller; 1505. Drive plate; 1506. Drive nut; 1507. Threaded rod; 1508. Handwheel; 6. Lifting guide rail; 17. First grinding unit; 1701. First mounting bracket; 1702. First drive motor; 1703. First rust removal roller; 1704. First lead screw nut; 18. Second grinding unit; 1801. Second mounting bracket; 1802. Second drive motor; 1803. Second rust removal roller; 1804. Second lead screw nut; 19. Drive motor; 2001. Main lead screw; 2002. Driven lead screw; 21. Support bearing; 22. Dust extraction hood; 23. Negative pressure pipe; 24. Collection hood. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] Example like Figures 1-9 As shown, a rust removal device for steel structure surfaces includes a rust removal box 1, a tilting device, and rust removal components.

[0019] like Figures 1-5As shown, the rust removal box 1 is a rectangular box structure. A flipping device is fixedly connected to both ends of the rust removal box 1. The flipping device includes two symmetrically arranged mounting rails 3, which are rectangular. Two symmetrically arranged semi-rectangular plates 4 are slidably connected to the inner wall of the mounting rails 3. When the two semi-rectangular plates 4 are closed, they form a complete rectangular plate. Semi-annular holes 5 are opened on the two semi-rectangular plates 4. The two semi-annular holes 5 combine to form a complete annular hole. An annular groove 6 is opened on the inner wall of the semi-annular hole 5. A turntable 7 is rotatably connected to the inner wall of the annular groove 6. A protrusion that mates with the annular groove 6 is provided on the outer periphery of the turntable 7. A rectangular hole 8 is opened on the turntable 7. The rectangular hole 8 is used for the passage and positioning of the U-shaped steel 2. Two clamping components for positioning the U-shaped steel 2 are also fixedly connected to the outer wall of the turntable 7.

[0020] In this utility model, when the U-shaped steel 2 needs to be derusted, the U-shaped steel 2 is first passed through the rectangular hole 8, and the U-shaped steel 2 is clamped and fixed by the clamping assembly to ensure that the position of the U-shaped steel 2 is stable during the derusting process, so as to avoid uneven wear of the grinding parts and affect the service life. The U-shaped steel 2 passes through the derusting assembly in the derusting box 1 at a certain feed speed to continuously derust the U-shaped steel 2.

[0021] like Figure 3 and Figure 4 As shown, a flip handle 9 is fixedly connected to the outer end face of the turntable 7. The flip handle 9 has an L-shaped handle structure, which is convenient for the operator to rotate manually. A positioning rod 10 is inserted through the outer end of the flip handle 9. The positioning rod 10 is a cylindrical rod. Three positioning holes 11 matching the positioning rod 10 are opened on the outer end of the semi-rectangular plate 4. The three positioning holes 11 are set at 90-degree intervals, corresponding to different rust removal positions of the U-shaped steel 2. A locking pin 12 is also inserted through the outer end of the positioning rod 10. The positioning rod 10 is inserted into the positioning hole 11 and the flipping device is locked and positioned by the locking pin 12.

[0022] Two symmetrically arranged fixed frames 13 are fixedly connected to the other end face of the turntable 7. The fixed frame 13 is a U-shaped frame structure. A support roller 14 is rotatably connected inside the fixed frame 13. The support roller 14 is a cylindrical roller made of rubber, which is used to horizontally support the U-shaped steel 2, ensuring that the U-shaped steel 2 can smoothly enter the rectangular hole 8 and reduce the feeding resistance.

[0023] like Figure 3 and Figure 5 As shown, the clamping assembly includes a support frame 1501 fixedly connected to the turntable 7. A clamping guide rail 1502 is fixedly connected to the inner wall of the support frame 1501. The clamping guide rail 1502 is a linear guide rail. A support arm 1503 is slidably connected to the inner wall of the clamping guide rail 1502. A through hole is opened at the outer end of the support arm 1503. A positioning roller 1504 is rotatably connected in the through hole. The positioning roller 1504 is a steel roller that directly contacts the surface of the U-shaped steel 2 to achieve reliable clamping.

[0024] A drive plate 1505 is fixedly connected to the inner wall of the support frame 1501. The drive plate 1505 is a rectangular plate structure. A through hole is opened in the middle of the drive plate 1505. A drive nut 1506 is rotatably connected in the through hole. A threaded rod 1507 is fixedly connected to the outer end of the drive nut 1506. The threaded rod 1507 passes through the support arm 1503 and is threadedly connected to the support arm 1503. A handwheel 1508 is fixedly connected to the outer end of the threaded rod 1507. The handwheel 1508 is a circular turntable with anti-slip texture on the surface, which makes it easy for the operator to manually adjust the clamping force.

[0025] like Figures 1-5 and Figure 9 As shown in the present invention, when it is necessary to remove rust from the U-shaped steel 2, the U-shaped steel 2 is first fed through the rectangular hole 8 at the inlet end by the feeding mechanism or manually. After entering, the U-shaped steel 2 passes between the two support rollers 14 on the fixed frame 13. The two surfaces of the U-shaped steel 2 form rolling friction with the support rollers 14, which reduces the resistance when the U-shaped steel 2 is fed and also provides support for the U-shaped steel 2. At this time, the U-shaped steel 2 is in the initial horizontal state, and the clamping assembly of the turntable 7 is in the open state.

[0026] Next, the clamping and positioning operation at the inlet end is performed. The operator turns the handwheel 1508, which drives the threaded rod 1507 to rotate. Since the threaded rod 1507 is threadedly connected to the support arm 1503, the rotation of the threaded rod 1507 pushes the drive plate 1505. The drive plate 1505 drives the support arm 1503 to slide along the clamping guide rail 1502 toward the center of the turntable 7. The positioning roller 1504 at the outer end of the support arm 1503 gradually approaches the U-shaped steel 2 until the positioning roller 1504 is in close contact with the outer surface of the U-shaped steel 2. The two positioning rollers 1504 at the inlet end, together with the two support rollers 14 on the other side of the turntable 7, reliably fix the U-shaped steel 2 in the rectangular hole 8 at the inlet end.

[0027] After clamping, operate the flip handles 9 at the inlet and outlet ends to rotate the turntable 7 to the 12 o'clock position. After rotation, insert the positioning rod 10 into the positioning hole 11, and lock the pin 12 through the positioning rod 10 to prevent the positioning rod 10 from dislodging from the positioning hole 11. At this time, the U-shaped steel 2 has been positioned. First, remove rust from the inner surface and bottom surface of the U-shaped steel 2.

[0028] After completing the clamping, positioning, and flipping adjustment at the inlet end, the rust removal component is started. When the rust-removed U-shaped steel 2 protrudes a certain length from the outlet end, the operator clamps and positions the outlet end in the same way, and rotates the handwheel 1508 at the outlet end to tighten the two positioning rollers 1504 at the outlet end to hold the U-shaped steel 2. At this time, the U-shaped steel 2 is reliably fixed at both the inlet and outlet ends, forming a double-end constraint, which improves the positional stability of the U-shaped steel 2 during the rust removal process, prevents uneven wear of the grinding parts, and ensures the consistency of the rust removal quality of the U-shaped steel 2.

[0029] After the inner and bottom surfaces of the U-shaped steel 2 are ground, operate the flip handles 9 at the inlet and outlet ends to rotate the turntable 7 to the 9 o'clock or 3 o'clock position, so that the U-shaped steel 2 can be rotated 90 degrees, making it easier to grind the other two surfaces.

[0030] like Figure 2 and Figures 6-7 As shown, a rust removal assembly is fixedly installed inside the rust removal box 1. The rust removal assembly includes several lifting guide rails 16 fixedly connected to the top of the rust removal box 1. The lifting guide rails 16 are vertically arranged linear guide rails. A first grinding unit 17 and a second grinding unit 18 are slidably connected to the inner wall of the lifting guide rails 16. The first grinding unit 17 and the second grinding unit 18 are respectively responsible for the rust removal work of different parts of the U-shaped steel 2.

[0031] The first grinding unit 17 includes two first mounting brackets 1701 that are slidably connected to the lifting guide rail 16. The first mounting bracket 1701 is a rectangular frame structure. A first drive motor 1702 is fixedly connected to the top of the first mounting bracket 1701. The output shaft of the first drive motor 1702 is fixedly connected to a first rust removal roller 1703 through a coupling for rust removal operation. A first lead screw nut 1704 is fixedly connected to the outer end of each of the two first mounting brackets 1701.

[0032] The second grinding unit 18 includes two second mounting brackets 1801 that are slidably connected to the inner wall of the lifting guide rail 16. A second drive motor 1802 is fixedly connected to the bottom end of the second mounting bracket 1801. The output shaft of the second drive motor 1802 is fixedly connected to a second rust removal roller 1803 through a coupling. The second rust removal roller 1803 is used to treat the other side of the U-shaped steel 2. A second lead screw nut 1804 is fixedly connected to the outer end of each of the two second mounting brackets 1801.

[0033] A drive motor 19, a servo motor, is fixedly connected to the top of the rust removal box 1 via a mounting plate. The output shaft of the drive motor 19 is fixedly connected to a main lead screw 2001 via a coupling. The main lead screw 2001 is rotatably connected to a driven lead screw 2002 via a synchronous pulley and a synchronous belt. The main lead screw 2001 drives the driven lead screw 2002 to rotate synchronously, jointly driving the first lead screw nut 1704 and the second lead screw nut 1804. A support bearing 21 is rotatably connected to the bottom of the main lead screw 2001 and the driven lead screw 2002. The support bearing 21 is fixedly connected to the bottom of the rust removal box 1, providing axial and radial support for the main lead screw 2001 and the driven lead screw 2002. The upper half of the main lead screw 2001 and the driven lead screw 2002 is a left-hand threaded section, and the lower half is a right-hand threaded section. The left-hand threaded section is threadedly connected to the first lead screw nut 1704, and the right-hand threaded section is threadedly connected to the second lead screw nut 1804.

[0034] like Figures 6-9As shown, after the U-shaped steel 2 is clamped and positioned, the drive motor 19 is rotated forward, and the main lead screw 2001 and the driven lead screw 2002 rotate synchronously, driving the first grinding unit 17 and the second grinding unit 18 to move closer to each other, reducing the distance between the first rust-removing roller 1703 and the second rust-removing roller 1803, so that the first rust-removing roller 1703 contacts the inner surface of the U-shaped steel 2 and the second rust-removing roller 1803 contacts the bottom surface. At the same time, the first drive motor 1702 and the second drive motor 1802 are started, driving the first rust-removing roller 1703 and the second rust-removing roller 1803 to rotate at high speed to remove rust. After the inner surface and bottom surface of the U-shaped steel 2 are rust-removed, the remaining two surfaces are then treated. When removing rust, when the drive motor 19 is reversed, the main lead screw 2001 and the driven lead screw 2002 rotate synchronously in opposite directions, causing the first grinding unit 17 and the second grinding unit 18 to move away from each other, increasing the distance between the first rust removal roller 1703 and the second rust removal roller 1803. At this time, the U-shaped steel 2 is flipped. After the flipping is completed, the drive motor 19 is controlled to rotate forward again, so that the first rust removal roller 1703 and the second rust removal roller 1803 contact the two sides of the U-shaped steel 2. The first drive motor 1702 and the second drive motor 1802 are started again, driving the first rust removal roller 1703 and the second rust removal roller 1803 to rotate at high speed to remove rust from the other two sides.

[0035] A dust extraction hood 22 is fixedly connected between the two first mounting brackets 1701. The dust extraction hood 22 is a conical hood. A negative pressure pipe 23 is fixedly connected to the top of the dust extraction hood 22. The negative pressure pipe 23 passes through the top of the rust removal box 1 and is connected to the negative pressure equipment. At the same time, the negative pressure pipe 23 can slide along the top of the box 1 to absorb the dust and particles generated during the rust removal process. A collection hood 24 is fixedly connected between the two second mounting brackets 1801. The collection hood 24 collects the falling large dust particles and discharges them into the collection box at the bottom. The collection hood 24 and the dust extraction hood 22 work together to form a complete dust collection system.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rust removal device for steel structure surfaces, characterized in that, It includes a rust removal box (1) and a U-shaped steel (2), and the two ends of the rust removal box (1) are fixedly connected with a flipping device; The flipping device includes two symmetrically arranged mounting guide rails (3). The inner walls of the mounting guide rails (3) are slidably connected to two symmetrically arranged semi-rectangular plates (4). The two semi-rectangular plates (4) are provided with semi-annular holes (5). The inner walls of the semi-annular holes (5) are provided with annular grooves (6). The inner walls of the annular grooves (6) are rotatably connected to a turntable (7). The turntable (7) is provided with rectangular holes (8). The outer walls of the turntable (7) are also fixedly connected to two clamping components for positioning the U-shaped steel (2). The rust removal box (1) is fixedly equipped with a rust removal component, which is used to grind and remove rust from the U-shaped steel (2) that is fed along the length of the U-shaped steel (2).

2. The steel structure surface rust removal device according to claim 1, characterized in that: A flip handle (9) is fixedly connected to the outer end face of the turntable (7). A positioning rod (10) is passed through the outer end of the flip handle (9). A number of positioning holes (11) matching the positioning rod (10) are opened on the outer end of the semi-rectangular plate (4). A locking pin (12) is also passed through the outer end of the positioning rod (10). The positioning rod (10) is inserted into the positioning hole (11) and the flipping device is locked and positioned by the locking pin (12). Two symmetrically arranged fixing frames (13) are fixedly connected to the other end face of the turntable (7). A support roller (14) is rotatably connected inside the fixing frame (13).

3. The steel structure surface rust removal device according to claim 2, characterized in that: The clamping assembly includes a support frame (1501) fixedly connected to the turntable (7). A clamping guide rail (1502) is fixedly connected to the inner wall of the support frame (1501). A support arm (1503) is slidably connected to the inner wall of the clamping guide rail (1502). A through hole is opened at the outer end of the support arm (1503). A positioning roller (1504) is rotatably connected in the through hole.

4. A rust removal device for steel structure surfaces according to claim 3, characterized in that: A drive plate (1505) is fixedly connected to the inner wall of the support frame (1501). A through hole is opened in the middle of the drive plate (1505). A drive nut (1506) is rotatably connected in the through hole. A threaded rod (1507) is fixedly connected to the outer end of the drive nut (1506). The threaded rod (1507) passes through the support frame (1501) and is threadedly connected to the support frame (1501). A handwheel (1508) is fixedly connected to the outer end of the threaded rod (1507).

5. A rust removal device for steel structure surfaces according to claim 1, characterized in that: The rust removal assembly includes several lifting guide rails (16) fixedly connected to the top of the rust removal box (1). The inner wall of the lifting guide rails (16) is slidably connected to a first grinding unit (17) and a second grinding unit (18). The first grinding unit (17) includes two first mounting brackets (1701) slidably connected to the lifting guide rails (16). The top of the first mounting bracket (1701) is fixedly connected to a first drive motor (1702). The output shaft of the first drive motor (1702) is fixedly connected to a first rust removal roller (1703) through a coupling. The outer ends of the two first mounting brackets (1701) are fixedly connected to a first screw nut (1704).

6. A rust removal device for steel structure surfaces according to claim 5, characterized in that: The second grinding unit (18) includes two second mounting brackets (1801) that are slidably connected to the inner wall of the lifting guide rail (16). The bottom end of the second mounting bracket (1801) is fixedly connected to a second drive motor (1802). The output shaft of the second drive motor (1802) is fixedly connected to a second rust removal roller (1803) through a coupling. The outer ends of the two second mounting brackets (1801) are fixedly connected to a second lead screw nut (1804).

7. A rust removal device for steel structure surfaces according to claim 1, characterized in that: The top of the rust removal box (1) is fixedly connected to a drive motor (19) via a mounting plate. The output shaft of the drive motor (19) is fixedly connected to a main lead screw (2001). The main lead screw (2001) is rotatably connected to a driven lead screw (2002) via a synchronous pulley and a synchronous belt. The bottom ends of the main lead screw (2001) and the driven lead screw (2002) are rotatably connected to a support bearing (21). The support bearing (21) is fixedly connected to the bottom of the rust removal box (1). The upper half of the main lead screw (2001) and the driven lead screw (2002) are left-hand threaded sections, and the lower half are right-hand threaded sections. The left-hand threaded section is threadedly connected to the first lead screw nut (1704), and the right-hand threaded section is threadedly connected to the second lead screw nut (1804). When the main lead screw (2001) is rotated, the first mounting bracket (1701) and the second mounting bracket (1801) can be driven to move closer to or further away from each other.

8. A rust removal device for steel structure surfaces according to claim 7, characterized in that: A dust extraction hood (22) is fixedly connected between the two first mounting brackets (1701). A negative pressure pipe (23) is fixedly connected to the top of the dust extraction hood (22). The negative pressure pipe (23) passes through the top of the rust removal box (1) and is connected to the negative pressure equipment. A collection hood (24) is fixedly connected between the two second mounting brackets (1801).

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