A rust removal device for a slewing bearing

Abstract

The application discloses a rust removal device for slewing bearing and relates to the technical field of slewing bearing, and solves the technical problem that the rust removal of the slewing bearing by the shot blasting machine is not comprehensive and dead angles are prone to occurring; the rust removal device comprises a rust removal box, a horizontal plate installed in the rust removal box, a liquid supply pipe located below the horizontal plate and used for conveying rust removal liquid, a plurality of uniformly distributed branch pipes rotatably connected to the top of the liquid supply pipe, a transmission assembly installed between the plurality of branch pipes and the rust removal box, the branch pipes penetrating through the horizontal plate and extending upwards, the branch pipes being rotatably connected with the horizontal plate, a rotating disc coaxially and fixedly sleeved on the branch pipes and located above the horizontal plate, hollow support columns communicated with the top of the branch pipes, two symmetrical L-shaped columns slidably installed on the top of the rotating disc, and a liquid supply and rust removal assembly installed between the L-shaped columns and the support columns. The rust removal device is convenient for comprehensively removing the rust of the inner and outer rings and the upper and lower end faces of the slewing bearing, effectively avoids the occurrence of dead angles, and improves the rust removal effect.

Description

Technical Field

[0001] This invention relates to the field of slewing bearing technology, and more specifically to a rust removal device for slewing bearings. Background Technology

[0002] Slewing bearings are a new type of mechanical component. They consist of inner and outer rings, rolling elements, etc. Slewing bearings are large bearings that can withstand comprehensive loads. They can simultaneously withstand large axial and radial loads and overturning moments. They are essential transmission components for machines that require relative rotational motion between two objects and simultaneously bear axial force, radial force, and overturning moment.

[0003] Due to environmental factors, usage conditions, and the passage of time, slewing bearings may rust. Therefore, rust removal is necessary. Chinese patent CN218856643U discloses a rust removal device for slewing bearing production. This device involves hanging the slewing bearing to be rusted on a hook on the left side of the belt. The motor's output shaft rotates counter-clockwise, driving the rotating shaft to rotate in the same direction, thus moving the belt in the same direction. The bearings cooperate with the rotation of the rotating shaft. The initial state of the moving channel is open. The hooks with the slewing bearings attached sequentially enter the shot blasting machine from the left side. When the number of slewing bearings inside the shot blasting machine reaches its maximum, the motor's output shaft stops rotating, the connecting rod moves upward along the electric slide rail, and the folding door opens with the hinge at the center line as the pivot point until the folding door is fully open, forming a 90-degree angle with the ground, and the top of the sealing strip is in contact with the lower surface of the belt. The shot blasting machine then removes the rust from the slewing bearing. However, this technical solution still has the following drawbacks:

[0004] While using a belt and hook makes it convenient to feed the slewing bearing to be derusted into the shot blasting machine, the inner ring of the slewing bearing is located inside the bearing structure and is difficult to access compared to the external environment. Shot blasting machines typically remove rust by high-speed abrasive jets, but the inner ring, due to its limited position, is unlikely to be directly impacted by the abrasive. Furthermore, the area where the slewing bearing contacts the hook cannot be effectively derusted, thus affecting the derusting effect. Summary of the Invention

[0005] The purpose of this invention is to provide a rust removal device for slewing bearings, which solves the problem that using shot blasting machines to remove rust from slewing bearings results in incomplete rust removal and the easy occurrence of rust-depleted areas.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A rust removal device for a slewing bearing includes a rust removal box, a horizontal plate installed inside the rust removal box, and a supply pipe located below the horizontal plate for conveying rust removal liquid. Multiple evenly distributed branch pipes are rotatably connected to the top of the supply pipe. A transmission assembly is installed between the branch pipes and the rust removal box. The branch pipes penetrate the horizontal plate and extend upwards, and are rotatably connected to the horizontal plate. A turntable located above the horizontal plate is coaxially fixedly sleeved on each branch pipe, and a hollow support column is connected to the top of the branch pipe. Two symmetrical L-shaped columns are slidably installed on the top of the turntable. A rust removal liquid supply assembly is installed between the L-shaped columns and the support column. Inclined guide columns are rotatably installed on the tops of the two L-shaped columns on the turntable. The two guide columns are symmetrically arranged close to each other. Springs are symmetrically installed between the L-shaped columns and the support column. Power mechanisms for clamping the slewing bearing and driving its rotation are installed on the inner walls of both sides of the rust removal box.

[0008] As a further aspect of the present invention: the power mechanism includes two housings located inside a rust removal box. A slider and an extension column are respectively installed at both ends of the housings. A groove for sliding the slider is opened on the inner wall of one end of the rust removal box, and a through groove for the extension column to pass through is opened on the side wall of the other end of the rust removal box. Multiple rotating brushes are rotatably installed in the two housings, and a portion of the rotating brushes protrudes to the outside of the housing. A drive assembly for driving the multiple rotating brushes to rotate synchronously is installed on the housing. A first motor is installed on the outer wall of one end of the rust removal box. A lead screw is installed at the output end of the first motor. The lead screw has two opposite threads, and the lead screw is threadedly connected to the extension column.

[0009] As a further aspect of the present invention: the drive assembly includes a geared motor mounted on the top of the housing, the output shaft of the geared motor being coaxially connected to the roller shaft of one of the rotating brushes, and sprockets being fixedly sleeved on the roller shafts of the plurality of rotating brushes, and matching chains being installed on the plurality of sprockets.

[0010] As a further aspect of the present invention: the transmission assembly includes a second motor installed on the outer wall of the rust removal box, the output end of the second motor is connected to a rotating rod extending into the interior of the rust removal box, and the end of the rotating rod is connected to a driving bevel gear, a driven bevel gear meshing with the driving bevel gear is installed on the outer wall of one of the branch pipes, and pulleys are fixedly sleeved on the outer walls of multiple branch pipes, and a matching belt is sleeved between two adjacent pulleys.

[0011] As a further aspect of the present invention: the liquid supply rust removal assembly includes corrugated pipes connected to both sides of the support column, and the other ends of the two corrugated pipes are respectively connected to two L-shaped columns. The L-shaped columns are hollow structures, and the side of the L-shaped columns away from the support column and the turntable is respectively provided with uniformly distributed liquid outlet holes and first brush bristles.

[0012] As a further aspect of the present invention: a locking knob for positioning is installed at the rotatable connection between the guide post and the L-shaped post; a groove is provided on one side of the guide post, and a matching brush plate is provided in the groove; a second bristle is evenly distributed on the side of the brush plate away from the bottom of the groove; and an adjustment component for adjusting the position of the brush plate is installed on the guide post.

[0013] As a further embodiment of the present invention: the adjustment assembly includes a screw rotatably mounted on the side of the brush plate near the bottom of the groove, the screw passing through a guide post and being threadedly connected to the guide post, and a limit rod slidably passing through the bottom of the groove, one end of the limit rod being connected to the brush plate.

[0014] As a further aspect of the present invention: a matching cover is slidably provided on the top of the rust removal box, and a drain port is installed on the side wall near the bottom of the rust removal box.

[0015] As a further aspect of the present invention: a T-shaped slider is installed at the bottom of the L-shaped column, and a T-shaped groove is provided at the top of the turntable for the T-shaped slider to slide.

[0016] The beneficial effects of this invention are:

[0017] 1. In this invention, the inner ring of the slewing bearing to be derusted is fitted onto two inclined guide columns, and pressure is applied to the slewing bearing to facilitate the adaptive sliding of the two L-shaped columns. With the help of spring reset, the slewing bearing is easily fitted onto the two L-shaped columns. The power mechanism not only facilitates the application of pressure to the outer ring of the slewing bearing to achieve clamping and positioning, but also facilitates the driving of the slewing bearing to rotate. The liquid supply pipe facilitates the delivery of rust removal liquid to the support column through the branch pipe. With the liquid supply rust removal component, the rust removal liquid is easily introduced into the L-shaped column and flows out through several liquid outlet holes, which facilitates the contact between the rust removal liquid and the inner and outer rings and the upper and lower end faces of the slewing bearing. The transmission component facilitates the synchronous rotation of multiple branch pipes, thereby causing the turntable to drive the L-shaped column to make a circular motion. With the help of the first brush, the inner ring and lower end face of the slewing bearing are thoroughly derusted, while the rotating roller brush facilitates the thorough derust removal of the outer ring of the slewing bearing.

[0018] 2. In this invention, the deflection position of the guide column can be easily adjusted using a locking knob. After the slewing bearing is fitted onto the two L-shaped columns, the guide column is adjusted to a horizontal position. The brush plate can then be controlled to move downwards using the adjusting component, so that the second bristles at the bottom of the brush plate contact the top surface of the slewing bearing, thereby facilitating comprehensive rust removal from the top surface of the slewing bearing. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1This is a schematic diagram of the first structure of a rust removal device for a slewing bearing in this invention;

[0021] Figure 2 This is a schematic diagram of the second structure of a rust removal device for a slewing bearing in this invention;

[0022] Figure 3 This is a perspective view of the connection between the guide post and the L-shaped post in this invention;

[0023] Figure 4 This is a top view of the connection between the shell and the rust removal box in this invention;

[0024] Figure 5 This is a cross-sectional view of the shell structure in this invention;

[0025] Figure 6 yes Figure 1 Enlarged view of part A in the middle.

[0026] In the diagram: 1. Rust removal box; 2. Horizontal plate; 3. Liquid supply pipe; 4. Branch pipe; 5. Turntable; 6. Support column; 7. L-shaped column; 8. Guide column; 9. Spring; 10. Housing; 11. Slider; 12. Extension column; 13. Rotary roller brush; 14. First motor; 15. Lead screw; 16. Gear motor; 17. Chain; 18. Second motor; 19. Driving bevel gear; 20. Driven bevel gear; 21. Belt; 22. Bellows; 23. Locking knob; 24. Brush plate; 25. Screw; 26. Limiting rod; 27. Box cover. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 and Figure 6 As shown, the present invention is a rust removal device for a slewing bearing, comprising a rust removal box 1, a horizontal plate 2 installed inside the rust removal box 1, and a supply pipe 3 located below the horizontal plate 2 for conveying rust removal liquid. The cross section of the horizontal plate 2 is smaller than the inner cross section of the rust removal box 1. A matching box cover 27 is slidably provided on the top of the rust removal box 1. A drain port is installed on the side wall near the bottom of the rust removal box 1 to facilitate the discharge of the used rust removal liquid. The top of the supply pipe 3 is rotatably connected to multiple evenly distributed branch pipes 4 through a sealed bearing. A transmission assembly is installed between the multiple branch pipes 4 and the rust removal box 1 to facilitate the synchronous rotation of the multiple branch pipes 4.

[0029] The transmission assembly includes a second motor 18 installed on the outer wall of the rust removal box 1. The output end of the second motor 18 is connected to a rotating rod extending into the interior of the rust removal box 1, and the end of the rotating rod is connected to a driving bevel gear 19. A driven bevel gear 20 that meshes with the driving bevel gear 19 is installed on the outer wall of one of the branch pipes 4, so that the second motor 18 can drive one of the branch pipes 4 to rotate after starting. Pulleys are fixedly sleeved on the outer walls of multiple branch pipes 4, and a matching belt 21 is sleeved between two adjacent pulleys to facilitate transmission and enable multiple branch pipes 4 to rotate synchronously.

[0030] Please see Figure 1 and Figure 3 As shown, the branch pipe 4 passes through the horizontal plate 2 and extends upward, and the branch pipe 4 is rotatably connected to the horizontal plate 2. A turntable 5 located above the horizontal plate 2 is coaxially fixedly sleeved on the branch pipe 4, and the top of the branch pipe 4 is connected to a hollow support column 6, so that the rust removal liquid can enter the support column 6 through the branch pipe 4. Two symmetrical L-shaped columns 7 are slidably installed on the top of the turntable 5. A T-shaped slider is installed at the bottom of the L-shaped column 7. A T-shaped groove for the T-shaped slider to slide is opened on the top of the turntable 5. A liquid supply rust removal component is installed between the L-shaped column 7 and the support column 6.

[0031] The liquid-supplying rust removal assembly includes corrugated pipes 22 connected to both sides of the support column 6. The other ends of the two corrugated pipes 22 are respectively connected to two L-shaped columns 7. The L-shaped columns 7 have a hollow structure, which facilitates the introduction of rust removal liquid into the inner cavity of the L-shaped columns 7. The side of the L-shaped columns 7 away from the support column 6 and the turntable 5 is provided with evenly distributed liquid outlet holes and first brush bristles. The liquid outlet holes facilitate the flow of rust removal liquid to contact the slewing bearing, and the first brush bristles facilitate the rust removal and cleaning of the inner ring and lower end face of the slewing bearing.

[0032] Please see Figure 1-3 As shown, inclined guide posts 8 are rotatably mounted on the tops of two L-shaped posts 7 on the turntable 5. The two guide posts 8 are symmetrical and close to each other. Springs 9 are symmetrically installed between the L-shaped posts 7 and the support posts 6. A locking knob 23 for positioning is installed at the rotatable connection between the guide posts 8 and the L-shaped posts 7 to facilitate adjustment of the position of the guide posts 8. A groove is opened on one side of the guide post 8, and a matching brush plate 24 is provided in the groove. The side of the brush plate 24 away from the bottom of the groove has evenly distributed second bristles. An adjustment component for adjusting the position of the brush plate 24 is installed on the guide post 8.

[0033] The adjustment assembly includes a screw 25 rotatably mounted on the side of the brush plate 24 near the bottom of the groove. The screw 25 passes through the guide post 8 and is threadedly connected to the guide post 8. Rotating the screw 25 facilitates the movement of the brush plate 24, allowing the second bristles at its bottom to contact the top surface of the slewing bearing. A limit rod 26 is slidably provided through the bottom of the groove. One end of the limit rod 26 is connected to the brush plate 24 to prevent the screw 25 from causing the brush plate 24 to deflect during rotation.

[0034] Please see Figure 4-5 As shown, power mechanisms for clamping and driving the slewing bearing to rotate are respectively installed on the inner walls of the two sides of the rust removal box 1. The power mechanism includes two housings 10 located inside the rust removal box 1. A slider 11 and an extension column 12 are respectively installed at both ends of the housing 10. A sliding groove for the slider 11 to slide is opened on the inner wall of one end of the rust removal box 1. A through groove for the extension column 12 to pass through is opened on the side wall of the other end of the rust removal box 1. A first motor 14 is installed on the outer wall of one end of the rust removal box 1. A lead screw 15 is installed at the output end of the first motor 14. The lead screw 15 has two threads in opposite directions and is threadedly connected to the extension column 12. Starting the first motor 14 facilitates the movement of the two housings 10 towards each other to clamp and position the outer ring of the slewing bearing. Multiple rotating brushes 13 are rotatably installed in the two housings 10 respectively, and part of the rotating brushes 13 protrudes to the outside of the housing 10.

[0035] The housing 10 is equipped with a drive assembly for driving multiple rotating brushes 13 to rotate synchronously. The drive assembly includes a geared motor 16 mounted on the top of the housing 10. The output shaft of the geared motor 16 is coaxially connected to the roller shaft of one of the rotating brushes 13. Each of the roller shafts of the multiple rotating brushes 13 is fixedly fitted with a sprocket, and a matching chain 17 is mounted on the multiple sprockets. This facilitates starting the geared motor 16 to drive the multiple rotating brushes 13 to rotate synchronously, causing the clamped slewing bearing to rotate on its own axis, thereby thoroughly cleaning and removing rust from the outer ring of the slewing bearing.

[0036] The working principle of this invention is as follows: The slewing bearing to be derusted is fitted onto two inclined guide columns 8, and downward pressure is applied to the slewing bearing, causing the two L-shaped columns 7 to slide towards each other on the turntable 5 until the slewing bearing is fitted onto the two L-shaped columns 7. The restoring force of the spring 9 causes the first bristles on the side wall of the L-shaped column 7 to abut against the inner ring of the slewing bearing. Then, the guide column 8 is adjusted to a horizontal state using the locking knob 23, and the screw 25 is rotated to move the brush plate 24 downward, causing the second bristles at the bottom of the brush plate 24 to abut against the top surface of the slewing bearing sleeve. Subsequently, the first motor 14 is started to drive the lead screw 15 to rotate, causing the two housings 10 to drive the slider 11 to move towards each other along the inner wall of the derusting box 1. The rotating roller brush 13, which protrudes to the outside of the housing 10, clamps and positions the slewing bearing fitted onto the two L-shaped columns 7. The geared motor 16, in conjunction with the sprocket and chain 17, enables multiple rotating brushes 13 within the housing 10 to rotate synchronously, thereby driving the clamped slewing bearing to rotate clockwise. The second motor 18 is started, and through the drive bevel gear 19 and driven bevel gear 20, as well as the pulley and belt 21, multiple branch pipes 4 rotate synchronously, thereby driving the turntable 5 and two L-shaped columns 7 to rotate counterclockwise. The rust remover is introduced into the support column 6 via the branch pipe 4 through the supply pipe 3, and then into the L-shaped column 7 via the corrugated pipe 22. Finally, the rust remover flows out through the outlet hole and contacts the slewing bearing. Because the L-shaped column 7 rotates, it is convenient to perform comprehensive rust removal and cleaning on the inner ring and bottom surface of the slewing bearing. Since the slewing bearing can rotate, the rotating brushes 13 and brush plates 24 can perform comprehensive rust removal and cleaning on its outer ring and top surface.

[0037] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A rust removal device for a slewing bearing, comprising a rust removal box (1), a horizontal plate (2) installed inside the rust removal box (1), and a supply pipe (3) located below the horizontal plate (2) for conveying rust removal fluid, characterized in that, The top of the liquid supply pipe (3) is rotatably connected to multiple evenly distributed branch pipes (4). A transmission assembly is installed between the multiple branch pipes (4) and the rust removal box (1). The branch pipes (4) pass through the horizontal plate (2) and extend upward. The branch pipes (4) are rotatably connected to the horizontal plate (2). A turntable (5) located above the horizontal plate (2) is coaxially fixedly sleeved on the branch pipes (4). The top of the branch pipes (4) is connected to a hollow support column (6). Two turntables (5) are slidably installed on the top of the turntable (5). A liquid-supplying rust removal assembly is installed between the L-shaped column (7) and the support column (6). An inclined guide column (8) is rotatably installed on the top of the two L-shaped columns (7) on the turntable (5). The two guide columns (8) are symmetrical and close to each other. A spring (9) is symmetrically installed between the L-shaped column (7) and the support column (6). A power mechanism for clamping the slewing bearing and driving it to rotate is installed on the inner walls of the two sides of the rust removal box (1). The power mechanism includes two housings (10) located inside the rust removal box (1). A slider (11) and an extension column (12) are respectively installed at both ends of the housing (10). A sliding groove for the slider (11) to slide is opened on the inner wall of one end of the rust removal box (1). A through groove for the extension column (12) to pass through is opened on the side wall of the other end of the rust removal box (1). Multiple rotating roller brushes (13) are rotatably installed in the two housings (10), and part of the rotating roller brushes (13) protrudes to the outside of the housing (10). A drive assembly for driving the multiple rotating roller brushes (13) to rotate synchronously is installed on the housing (10). A first motor (14) is installed on the outer wall of one end of the rust removal box (1). A lead screw (15) is installed at the output end of the first motor (14). The lead screw (15) is provided with two threads in opposite directions, and the lead screw (15) is threadedly connected to the extension column (12). The liquid supply rust removal assembly includes a corrugated pipe (22) connected to both sides of the support column (6). The other ends of the two corrugated pipes (22) are respectively connected to two L-shaped columns (7). The L-shaped columns (7) are hollow structures, and the side of the L-shaped columns (7) away from the support column (6) and the turntable (5) is respectively provided with uniformly distributed liquid outlet holes and first brush bristles. A locking knob (23) for positioning is installed at the rotatable connection between the guide post (8) and the L-shaped post (7). A groove is provided on one side of the guide post (8), and a matching brush plate (24) is provided in the groove. The brush plate (24) has a second bristle that is evenly distributed on the side away from the bottom of the groove. An adjustment component for adjusting the position of the brush plate (24) is installed on the guide post (8).

2. A rust removal device for a slewing bearing according to claim 1, characterized in that, The drive assembly includes a geared motor (16) mounted on the top of the housing (10). The output shaft of the geared motor (16) is coaxially connected to the roller shaft of one of the rotating brushes (13). A sprocket is fixedly sleeved on the roller shafts of the multiple rotating brushes (13), and a matching chain (17) is installed on the multiple sprockets.

3. A rust removal device for a slewing bearing according to claim 1, characterized in that, The transmission assembly includes a second motor (18) installed on the outer wall of the rust removal box (1). The output end of the second motor (18) is connected to a rotating rod extending into the interior of the rust removal box (1), and the end of the rotating rod is connected to a driving bevel gear (19). A driven bevel gear (20) that meshes with the driving bevel gear (19) is installed on the outer wall of one of the branch pipes (4). Pulleys are fixedly sleeved on the outer walls of multiple branch pipes (4), and a matching belt (21) is sleeved between two adjacent pulleys.

4. A rust removal device for a slewing bearing according to claim 1, characterized in that, The adjustment assembly includes a screw (25) rotatably mounted on the brush plate (24) near the bottom of the groove. The screw (25) passes through the guide post (8) and is threadedly connected to the guide post (8). A limit rod (26) is slidably provided through the bottom of the groove, and one end of the limit rod (26) is connected to the brush plate (24).

5. A rust removal device for a slewing bearing according to claim 1, characterized in that, The top of the rust removal box (1) is slidably provided with a matching box cover (27), and a drain port is installed on the side wall near the bottom of the rust removal box (1).

6. A rust removal device for a slewing bearing according to claim 1, characterized in that, The bottom of the L-shaped column (7) is equipped with a T-shaped slider, and the top of the turntable (5) is provided with a T-shaped groove for the T-shaped slider to slide.

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