A steel strip brush unit

Abstract

This invention discloses a strip steel brushing unit, including a frame, a lower brush roller, an upper brush roller, a lifting mechanism, a set of support rollers, and a set of pressure rollers. The upper and lower brush rollers are simultaneously mounted on the frame. Under the control of the lifting mechanism, the upper and lower brush rollers move so that they can simultaneously brush the upper and lower surfaces of the strip steel, cleaning both surfaces at the same time and avoiding secondary contamination. Furthermore, the simultaneous brushing of both surfaces by the upper and lower brush rollers allows for force counteraction, making the strip steel more stable and effective during operation. The support rollers and pressure rollers further maintain the straightness and stability of the strip steel. Since the upper and lower brush rollers are integrated into the same unit, there is no requirement for the number of brushing units in the production line, and the already cleaned side will not be contaminated during strip steel cleaning on the production line.

Description

Technical Field

[0001] This invention relates to the field of metal surface treatment technology, and in particular to a steel strip brush unit. Background Technology

[0002] It often takes a period of time for strip steel to go from production to actual use. During this period, due to the inherent properties of the strip steel, the surface of the strip steel may rust, affecting its actual use. Therefore, the rusted strip steel needs to be derusted before it is processed into technical products.

[0003] Currently, the most common method for rust removal from steel strip surfaces is pickling. The principle is to use the acid in the pickling solution to chemically react with metal oxides, dissolving them and removing rust and contaminants from the steel surface. However, after pickling, the steel strip must be thoroughly rinsed with water and passivated, resulting in significant wastewater, waste acid, and acid mist that cause environmental pollution. Of course, there are also physical rust removal methods, such as polishing the steel strip surface using abrasive brushing equipment.

[0004] Existing brushing equipment typically consists of a production line composed of multiple brushing units to ensure the degree of rust removal. This type of production line includes two types of brushing units: a lower brush roller unit for brushing the lower surface of the strip and an upper brush roller unit for brushing the upper surface. The production line has multiple lower and upper brush roller units. In the first half of the production line, multiple lower brush roller units are arranged from front to back, and in the second half, multiple upper brush roller units are arranged sequentially. Therefore, the current cleaning process involves multiple lower brush roller units... The lower surface of the strip is cleaned by a single brush roller unit, and then the upper surface of the strip is cleaned by multiple upper brush roller units. Since the upper and lower brush rollers are separate, each unit can only brush one side of the strip. Therefore, the strip is only subjected to force in one direction and is prone to shaking, resulting in unstable operation. Moreover, due to the above arrangement and cleaning process, the brush rollers at the front are dirtier and are more likely to contaminate the cleaned side. In addition, the upper and lower brush roller units need to be set up in pairs, that is, the number of upper and lower brush roller units must be the same. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a strip steel brushing unit. An upper brush roller and a lower brush roller are simultaneously mounted on a frame. Under the control of a lifting mechanism, the upper and lower brush rollers move so that they can simultaneously brush both the upper and lower surfaces of the strip steel, cleaning both surfaces at the same time and preventing secondary contamination. Furthermore, the simultaneous brushing of both surfaces by the upper and lower brush rollers allows for force counteraction, making the strip steel more stable and effective during operation. The straightness and stability of the strip steel are further maintained by a group of support rollers and pressure rollers. Since the upper and lower brush rollers are integrated into the same unit, there is no requirement for the number of brushing units in the production line, and the already cleaned side will not be contaminated during strip steel cleaning on the production line.

[0006] The technical solution of this invention is implemented as follows:

[0007] A steel-strip brush unit, comprising:

[0008] The frame is configured to support the main body of the brush unit; the frame includes a first working position and a second working position arranged adjacent to each other.

[0009] The lower brush roller is set at the first working position of the frame. The lower brush roller is configured to be located below the strip and to brush the lower surface of the strip.

[0010] The upper brush roller is located at the second working position of the frame. The upper brush roller is configured to be positioned above the strip and to brush the upper surface of the strip. The lower brush roller is integrated with the upper brush roller on the frame.

[0011] The lower brush roller and the upper brush roller are both connected to a lifting mechanism. The lifting mechanism is set on the frame and configured to drive the lower brush roller or the upper brush roller to move up and down.

[0012] The idler roller assembly is mounted on the frame and located below the strip steel. The idler roller assembly is configured to support the strip steel upwards.

[0013] The pressure roller assembly is mounted on the frame and located above the strip steel, and the pressure roller assembly is configured to press downwards onto the strip steel.

[0014] The strip steel passes through the frame from front to back and passes through the first working position and the second working position in sequence. The lower brush roller, upper brush roller, idler roller group and pressure roller group keep the strip steel at a horizontal plane, and the lower brush roller and upper brush roller respectively brush the lower and upper surfaces of the strip steel.

[0015] The upper and lower brush rollers are integrated into one unit, simultaneously brushing both the upper and lower surfaces of the strip. This simultaneous brushing of both sides creates counterforce, making the strip more stable during operation, resulting in cleaner and more efficient brushing, while also reducing vibration and noise. A lifting mechanism provides the upper and lower brush rollers with the ability to move up and down, ensuring they make precise contact with the strip surface without excessive contact affecting stability, and adapting to strips of varying thicknesses. The idler rollers and pressure rollers further maintain the strip's straightness, enhancing operational stability. Because the upper and lower brush rollers are integrated into one unit, there are no requirements on the number of brushing units in the production line, and the already cleaned side is not contaminated during strip cleaning on the production line.

[0016] Preferably, the idler roller assembly includes an upper idler roller and a lower idler roller. The upper idler roller is positioned below the upper brush roller, and the lower idler roller is positioned beside the lower brush roller. The lower idler roller is configured to support the strip at the first working position, and the upper idler roller is configured to support the strip at the second working position. The upper and lower idler rollers support the strip to prevent it from sagging due to its own weight. Stable operation is only possible when the strip remains straight.

[0017] Preferably, the frame is also equipped with a swing seat, which spans across the second working position and is rotatably mounted relative to the frame. The upper support roller is mounted on the swing seat. The swing seat can drive the upper support roller to swing up and down relative to the frame, making the upper support roller, which should be fixed, movable. Especially when the lower pressure roller in front is fixed, the lower support roller can adapt to the thickness of the strip, and the thickness range is larger.

[0018] Preferably, the frame includes a first column, a second column, and a third column arranged sequentially from front to back. The first working position is located between the first and second columns, and the second working position is located between the second and third columns. A third lower crossbeam is provided on the third column, located below the upper brush roller, and the swing seat is rotatably mounted on the third lower crossbeam. The first and second working positions are separated by the second column. Although the upper and lower brush rollers are located in the same unit, they are in independent working positions. This allows for relatively independent operation of the two brush rollers while also preventing them from influencing each other during operation, which is beneficial for the straightness of the strip and the stability of the operation.

[0019] Preferably, a bearing seat is fixedly installed on the third lower crossbeam, and a rotating shaft is installed on the bearing seat and passes through the rotating shaft. The swing seat is rotatably mounted on the bearing seat via the rotating shaft. The swing seat is rotatably connected to the third lower crossbeam via the bearing seat and the rotating shaft. The entire swing seat can rotate relative to the frame to swing slightly, and the upper roller on the swing seat also swings accordingly to adapt to the thickness of the strip steel.

[0020] Preferably, the second column is provided with a second lower crossbeam, and the second lower crossbeam is provided with a support seat. The support seat is positioned facing the third lower crossbeam, and the swing seat is transversely arranged across the third lower crossbeam and the support seat. The swing seat transversely across the support seat and the third lower crossbeam to keep the swing seat stable under the upper brush roller, so as not to tip over, and under this condition, the upper support roller can support the strip steel.

[0021] Preferably, there are two support seats, spaced apart on the second lower crossbeam, with a limiting component between them. The swing seat can be adaptively oscillating to adapt to varying thicknesses on the same strip. The limiting component is used to limit the swing seat to prevent it from adjusting too much and losing its function of keeping the upper idler roller in contact with the strip.

[0022] Preferably, the limiting assembly includes a limiting seat and a limiting rod. The limiting seat is fixedly installed on the second lower crossbeam and faces the third lower crossbeam. The limiting rod is vertically arranged and adjustablely mounted on the limiting seat via a thread. Adjusting the limiting rod adjusts the range of the swing seat, allowing it to adapt to strips of different thicknesses.

[0023] Preferably, a gas spring is rotatably mounted on the support, configured to control the rotation of the swing seat relative to the frame. The gas spring is also used to adjust the adaptable strip thickness range, and specifically to adjust the initial position of the swing seat to adjust the minimum value of the adaptable range. Furthermore, the gas spring has a certain degree of elasticity, enabling the swing seat to have an adaptive adjustment function to accommodate different thicknesses on the same strip.

[0024] Preferably, the lower support roller is disposed on the second lower crossbeam.

[0025] Preferably, the frame is equipped with a lifting seat arranged in the left-right direction. The lifting seat is movably mounted on the frame, and the lower idler roller is mounted on the lifting seat and moves up and down with it. The lower idler roller is movable and adjustable to accommodate different strip thicknesses.

[0026] Preferably, the pressure roller assembly includes an upper pressure roller and a lower pressure roller. The upper pressure roller is positioned beside the upper brush roller, and the lower pressure roller is positioned above the lower brush roller. The lower pressure roller is configured to press down on the strip at the first working position, and the upper pressure roller is configured to press down on the strip at the second working position. The lower pressure roller is fixedly mounted on the frame, while the upper pressure roller is flexibly mounted on the frame. The lower and upper pressure rollers press down on the strip to prevent it from vibrating upwards during operation. The fixed lower pressure roller saves costs to some extent, and its height can be adjusted by a liftable lower support roller to accommodate different strip thicknesses. Corresponding to the upper support roller, the height of the flexible upper pressure roller can be adjusted to accommodate different strip thicknesses.

[0027] Preferably, the frame includes a first column, a second column, and a third column arranged sequentially from front to back. The first working position is located between the first column and the second column, and the second working position is located between the second column and the third column. A top seat is provided between the first column and the second column, and a top seat is also provided between the second column and the third column. The lifting mechanism is mounted on the top seat.

[0028] Preferably, each of the top seats is equipped with a transverse movement mechanism; the transverse movement mechanism includes a slide rail and a moving seat. The slide rail is arranged on the front and rear sides of the hollowed-out area of ​​the top seat, and the moving seat is slidably mounted on the slide rail and driven by a transverse drive motor to move the moving seat on the slide rail in the left and right direction. The length of the brush roller is generally greater than the width of the strip steel. The end of the brush roller exceeds the strip steel and cannot work. Moving the brush roller left and right can make the brush roller wear evenly and avoid waste.

[0029] Preferably, the lifting mechanism is mounted on the sliding seat, and includes a lifting guide rod and a lifting drive motor for controlling the lifting of the lifting guide rod; the top seat is a hollow rectangular frame structure, the lifting guide rod is inserted into the movable seat and passes through the hollow of the top seat to reach the first working position or the second working position; the lower end of the lifting guide rod is provided with a brush roller seat for mounting the brush roller.

[0030] Preferably, at least one of the pressure roller group and the idler roller group is vertically mounted on the frame. The pressure roller group and the idler roller group are located on the upper and lower sides of the strip, respectively. The distance between the pressure roller group and the idler roller group generally determines the range of strip thickness that the brush unit can pass through. At least one of the pressure roller group and the idler roller group is vertically mounted, which increases the range of strip thickness that can be passed through. The pressure roller group and the idler roller group can adapt to a larger thickness range, and it is also more convenient to place the strip at the beginning of the operation.

[0031] The design starting point, concept, and beneficial effects of the present invention, which adopts the above technical solution, are as follows:

[0032] 1. The upper and lower brush rollers are integrated into one unit, simultaneously brushing both the upper and lower surfaces of the strip. This simultaneous brushing of both sides creates counteracting forces, resulting in greater stability during operation, cleaner brushing, and higher efficiency, while also reducing vibration and noise. A lifting mechanism provides the upper and lower brush rollers with the ability to precisely contact the strip surface without excessive contact affecting stability, and it can accommodate strips of varying thicknesses. The idler rollers and pressure rollers further maintain the straightness of the strip, enhancing operational stability. Because the upper and lower brush rollers are integrated into the same unit, there are no requirements on the number of brushing units in the production line, and the already cleaned side is not contaminated during strip cleaning, resulting in higher quality strip after cleaning.

[0033] 2. The upper and lower support rollers support the strip steel to prevent it from sagging due to its own weight. The lower and upper pressure rollers press down on the strip steel to prevent it from shaking upwards due to vibration during operation. The lower pressure roller is fixed, which saves costs to a certain extent. It is adjustable by the lower support roller to accommodate different strip steel thicknesses. Corresponding to the upper support roller, the height of the upper pressure roller is adjustable to accommodate different strip steel thicknesses. Stable operation can only be achieved when the strip steel is kept straight.

[0034] 3. The swing seat is rotatably connected to the third lower crossbeam via a shaft and a rotating shaft. The entire swing seat can rotate relative to the frame to swing slightly, and the upper support roller on the swing seat also swings accordingly, making the upper support roller, which should be fixed, movable. Especially when the lower pressure roller in front is fixed, the lower support roller can adapt to the thickness of the strip, and the thickness range is larger. The swing seat spans across the support seat and the third lower crossbeam to keep the swing seat stable under the upper brush roller, so as not to tip over, and under this condition, the upper support roller can support the strip. The gas spring is also used to adjust the range of adaptable strip thickness, and specifically to adjust the initial position of the swing seat to adjust the minimum value of the adaptable range. The gas spring has a certain elasticity, so that the swing seat has an adaptive adjustment function to adapt to different thicknesses on the same strip. The limiting component is used to limit the swing seat to prevent the swing seat from being adjusted too much and losing the function of keeping the upper support roller close to the strip. Adjusting the limiting rod is to adjust the range of the swing seat, so that the swing seat can adapt to strips of different thicknesses. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of the brush unit in an embodiment of the present invention. Figure 1 ;

[0036] Figure 2 This is a three-dimensional structural diagram of the arrangement of the first, second, and third columns in an embodiment of the present invention;

[0037] Figure 3 This is a three-dimensional structural diagram of the brush unit in an embodiment of the present invention. Figure 2 ;

[0038] Figure 4 This is a three-dimensional structural diagram of the brush unit in an embodiment of the present invention. Figure 3 ;

[0039] Figure 5 This is a three-dimensional structural diagram of the swing seat mounted on the frame in an embodiment of the present invention;

[0040] Figure 6 This is a cross-sectional view of the brush unit in an embodiment of the present invention;

[0041] Figure 7This is a three-dimensional structural diagram of the swing seat in an embodiment of the present invention. Figure 1 ;

[0042] Figure 8 This is a three-dimensional structural diagram of the swing seat in an embodiment of the present invention. Figure 2 ;

[0043] Figure 9 This is a side view of the swing seat in an embodiment of the present invention;

[0044] Figure 10 This is a front view of the swing seat in an embodiment of the present invention;

[0045] Figure 11 This is a side view of the brush unit in an embodiment of the present invention;

[0046] Figure 12 This is a front view of the brush unit in an embodiment of the present invention;

[0047] Figure 13 This is a three-dimensional structural diagram of the production line in an embodiment of the present invention;

[0048] Figure 14 This is a front view of the production line in an embodiment of the present invention.

[0049] The reference numerals in the attached drawings are as follows: 100 brush unit; 200 strip steel; 1 frame; 1a first working position; 1b second working position; 2 lower brush roller; 3 upper brush roller; 4 lifting mechanism; 41 lifting drive motor; 42 lifting guide rod; 5 first column; 6 second column; 7 third column; 8 top seat; 9 transverse movement mechanism; 91 slide rail; 92 moving seat; 93 transverse movement drive motor; 10 brush roller seat; 11 extension column; 12 upper support roller; 13 lower support roller. 13; Upper pressure roller; 14; Lower pressure roller; 15; First upper crossbeam; 16; First lower crossbeam; 17; Second upper crossbeam; 18; Second lower crossbeam; 19; Lifting seat; 20; Guide column; 21; Cylinder; 22; Pressure roller seat; 23; Third upper crossbeam; 24; Third lower crossbeam; 25; Support seat; 26; Swing seat; 27; Shaft seat; 28; Rotating shaft; 29; Gas spring; 30; Limit seat; 31; Limit rod; 32; Limit plate; 33; Base; 34; Drainage channel; 35. Implementation

[0050] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0052] In the description of this invention, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] The specific embodiments of the present invention are as follows:

[0054] like Figure 1 , 3 As shown in Figures 6 and 7, the present invention provides a steel strip brush unit, comprising:

[0055] The frame 1 is configured as the main support for the brush unit 100; the frame 1 includes a first working position 1a and a second working position 1b arranged adjacent to each other.

[0056] The lower brush roller 2 is set at the first working position 1a of the frame 1. The lower brush roller 2 is configured to be located below the strip 200 and to brush the lower surface of the strip 200.

[0057] The upper brush roller 3 is set at the second working position 1b of the frame 1. The upper brush roller 3 is configured to be located above the strip 200 and to brush the upper surface of the strip 200. The lower brush roller 2 and the upper brush roller 3 are integrated together on the frame 1.

[0058] The lower brush roller 2 and the upper brush roller 3 are both connected to a lifting mechanism 4. The lifting mechanism 4 is set on the frame 1 and configured to drive the lower brush roller 2 or the upper brush roller 3 to move up and down.

[0059] The idler roller assembly is set on the frame 1 and located below the strip 200. The idler roller assembly is configured to support the strip 200 upwards.

[0060] The pressure roller assembly is mounted on the frame 1 and located above the strip 200. The pressure roller assembly is configured to press downwards onto the strip 200.

[0061] The strip steel 200 passes through the frame 1 from front to back and passes through the first working position 1a and the second working position 1b in sequence. The lower brush roller 2, the upper brush roller 3, the support roller group and the pressure roller group keep the strip steel 200 at a horizontal plane, and the lower brush roller 2 and the upper brush roller 3 respectively brush the lower surface and the upper surface of the strip steel 200.

[0062] The upper brush roller 3 and the lower brush roller 2 are integrated into one unit. The upper brush roller 3 and the lower brush roller 2 simultaneously brush the upper and lower surfaces of the strip steel 200. The simultaneous brushing of the two surfaces of the strip steel 200 by the upper brush roller 3 and the lower brush roller 2 counteracts the force, making the strip steel 200 more stable during operation, the brush rollers clean more thoroughly, and the efficiency is higher. At the same time, it can also reduce vibration and noise. The lifting mechanism 4 provides lifting capability for the upper brush roller 3 and the lower brush roller 2, so that the upper brush roller 3 and the lower brush roller 2 can make just contact with the surface of the strip steel 200 without excessive contact affecting the working stability, and can adapt to strip steel 200 of different thicknesses. The idler roller group and the pressure roller group can further maintain the straightness of the strip steel 200, making the operation more stable.

[0063] like Figure 1-5 As shown, the frame 1 is a frame structure. The frame 1 includes a first column 5, a second column 6, and a third column 7, which are arranged sequentially from front to back. Each column has two members, one on the left and one on the right. The first working position 1a is located between the first column 5 and the second column 6, and the second working position 1b is located between the second column 6 and the third column 7. The top of the first column 5 and the second column 6 are provided with a top seat 8, and the top of the second column 6 and the third column 7 are also provided with a top seat 8. The top seat 8 is a hollow rectangular frame structure. Both top seats 8 are provided with a transverse movement mechanism 9. The transverse movement mechanism 9 includes a slide rail 91 and a moving seat 92. The slide rail 91 is arranged on the front and rear sides of the hollow part of the top seat 8. The moving seat 92 is slidably mounted on the slide rail 91 and is driven by a transverse movement drive motor 93 to move the moving seat 92 in the left and right direction on the slide rail 91. The transverse movement drive motor 93 is mounted on the top seat 8 and is located next to the moving seat 92.

[0064] Both movable seats 92 are equipped with the lifting mechanism 4. The lifting mechanism 4 includes a lifting drive motor 41 and lifting guide rods 42. There are four lifting guide rods 42, all of which are inserted into the movable seats 92 and pass through the hollow of the top seat 8 to reach the first working position 1a or the second working position 1b. The lifting drive motor 41 is mounted on the movable seats 92 and drives the lifting guide rods 42 to rise and fall. The lower end of the lifting guide rod 42 is connected to a brush roller seat 10. The upper brush roller 3 and the lower brush roller 2 are respectively mounted on the two brush roller seats 10. Under the action of the lifting mechanism 4, the upper brush roller 3 and the lower brush roller 2 can be at different heights, that is, the upper brush roller 3 can be above the strip 200 and the lower brush roller 2 can be below the strip 200. The transverse mechanism 9 can drive the lifting mechanism 4, the brush roller seat 10, and the upper brush roller 3 and the lower brush roller 2 to move in the left and right directions. The purpose of doing this is because the length of the upper brush roller 3 and the lower brush roller 2 is generally greater than the width of the strip 200. The ends of the brush rollers exceed the strip 200 and cannot work. Moving the brush rollers left and right can make the brush rollers wear evenly and avoid waste.

[0065] The lengths of the columns are different to accommodate the different heights of the upper brush roller 3 and the lower brush roller 2. Specifically, the first column 5 and the second column 6 are of equal length, and the third column 7 is longer than the second column 6. That is, the third column 7 is longer than the second column 6, and its height is also higher than the first column 5 and the second column 6. In order to keep the top seat 8 on the second column 6 and the third column 7 horizontal, an extension column 11 is also provided on the second column 6. Ultimately, the space above the strip 200 in the second working position 1b is larger, which is conducive to the lifting and lowering of the upper brush roller 3.

[0066] like Figure 6 , 11 As shown in Figures 1 and 12, the idler roller group includes an upper idler roller 12 and a lower idler roller 13, and the pressure roller group also includes an upper pressure roller 14 and a lower pressure roller 15. The lower idler roller 13 and the lower pressure roller 15 are located in the first working position 1a and cooperate with the lower brush roller 2 to maintain the straightness and stability of the strip 200. The upper idler roller 12 and the upper pressure roller 14 are located in the second working position 1b and cooperate with the upper brush roller 3 to maintain the straightness and stability of the strip 200. The lower pressure rollers 15 are all fixed on the frame 1, and the lower idler rollers 13 are movably mounted on the frame 1. Specifically, a first upper crossbeam 16 and a first lower crossbeam 17 are provided between the two first columns 5, and two second columns 5 are provided between the first columns 5. A second upper crossbeam 18 and a second lower crossbeam 19 are provided between the columns 6. There are two upper rollers 12, which are respectively set on the first lower crossbeam 17 and the second lower crossbeam 19. A lifting seat 20 is provided between the upper rollers 12 and the first lower crossbeam 17 or the second lower crossbeam 19. Two guide columns 21 are provided below the lifting seat 20. The guide columns 21 are inserted on the first lower crossbeam 17 and the second lower crossbeam 19. A cylinder 22 is provided on the first upper crossbeam 16 and the second upper crossbeam 18. The cylinder 22 is connected downward to the lifting seat 20 and drives the lifting seat 20 and the lower roller 13 on the lifting seat 20 to rise and fall.

[0067] The first upper crossbeam 16 and the second upper crossbeam 18 are also provided with pressure roller seats 23. The two pressure roller seats 23 are arranged opposite each other and extend towards the first working position 1a. There are four lower pressure rollers 15, which are respectively arranged on the first upper crossbeam 16, the second upper crossbeam 18 and the two pressure roller seats 23. The lower brush roller 2 is located directly below the lower pressure rollers 15 on the two pressure roller seats 23, and the axis of the lower brush roller 2 is located at the center line of the two lower pressure rollers 15. That is, the two pressure rollers on the pressure roller seats 23 and the lower brush roller 2 can pass through each other. To maintain the straightness and stability of the strip 200 at this position, the lower brush roller 2 acts as a support roller while working; the lower pressure roller 15 set on the first upper crossbeam 16 and the lower support roller 13 set on the first lower crossbeam 17 can maintain the straightness and stability of the strip 200 located at the first column 5. Similarly, the lower pressure roller 15 set on the second upper crossbeam 18 and the lower support roller 13 set on the second lower crossbeam 19 can maintain the straightness and stability of the strip 200 located at the second column 6.

[0068] A third upper crossbeam 24 and a third lower crossbeam 25 are provided between the two third columns 7. The upper pressure roller 14 is located below the third upper crossbeam 24. Another lifting seat 20 is provided between the third upper crossbeam 24 and the upper pressure roller 14. Another cylinder 22 is also provided on the third upper crossbeam 24. The cylinder 22 is connected to the lifting seat 20 and drives the lifting table and the upper pressure roller 14 to rise and fall.

[0069] like Figure 5-10 As shown, a support seat 26 is provided on the second lower crossbeam 19 of the second column 6, and the support seat 26 is positioned facing the third lower crossbeam 25. A swing seat 27 is provided on the third lower crossbeam 25 and the support seat 26, and the swing seat 27 spans across the third lower crossbeam 25 and the support seat 26. The upper roller 12 is disposed on the swing seat 27. Specifically, two bearing seats 28 are provided on the third lower crossbeam 25 at left and right intervals, and a rotating shaft 29 arranged in the left and right direction is provided between the bearing seats 28. The rotating shaft 29 passes through the swing seat 27 and enables the swing seat 27 to rotate relative to the third lower crossbeam 25. There are two support seats 26, which are arranged on the second lower crossbeam 19 at left and right intervals. The support seats 26 rotate. A gas spring 30 is provided, which pushes the upper support roller 12 toward the strip 200. The gas spring 30 can control the swing seat 27 to rotate around the rotating shaft 29, and the upper support roller 12 on the swing seat 27 moves accordingly to adapt to the thickness of the strip 200. The gas spring 30 is elastic and can automatically adapt to the thickness of the strip 200. Since the lower pressure roller 15 in front of the upper support roller 12 is fixed, if the upper support roller 12 is also fixed, the thickness range of the strip 200 that the brush unit 100 can adapt to will be greatly reduced. However, after the upper support roller 12 is oscillated, it can adapt to the thickness variation on the same strip 200, and can also adapt to a larger thickness range of strip 200 by adjusting the length of the gas spring 30.

[0070] A limiting assembly is also provided between the two support groups. The limiting assembly includes a limiting seat 31 and a limiting rod 32. The limiting seat 31 is fixedly installed on the second lower crossbeam 19 and faces the third lower crossbeam 25. The limiting rod 32 is vertically installed on the limiting seat 31. A limiting plate 33 is correspondingly provided on the swing seat 27. The limiting plate 33 faces the limiting rod 32. The height distance between the limiting plate 33 and the limiting rod 32 is a variable range of the thickness of the strip 200, that is, it is suitable for the thickness range of the same strip 200. The limiting rod 32 is adjustablely set on the limiting seat 31 by a thread, so that the distance between the limiting plate 33 and the limiting rod 32 can be adjusted.

[0071] like Figure 13 , 14As shown, a base 34 is also provided below the frame 1, and a drainage channel 35 is provided on the base 34. The drainage channel 35 is located below the frame 1 and is recessed downward on the surface of the base 34. The size of the drainage channel 35 is configured to allow workers to enter. Multiple brushing units 100 are arranged sequentially from front to back to form a production line, and the drainage channels 35 of the multiple brushing units 100 are connected. When the production line is working, that is, when brushing the surface of the strip steel 200, water spraying is required to cool it down and flush the brushed oxide layer into the drainage channel 35. Even if the oxide layer remains in the drainage channel 35, workers can still clean it easily and quickly.

Claims

1. A steel strip brush unit, characterized in that, include: The frame is configured to provide the main support for the brush unit; The rack includes a first workstation and a second workstation arranged adjacent to each other. The lower brush roller is set at the first working position of the frame. The lower brush roller is configured to be located below the strip and to brush the lower surface of the strip. The upper brush roller is located at the second working position of the frame. The upper brush roller is configured to be positioned above the strip and to brush the upper surface of the strip. The lower brush roller is integrated with the upper brush roller on the frame. The lower brush roller and the upper brush roller are both connected to a lifting mechanism. The lifting mechanism is set on the frame and configured to drive the lower brush roller or the upper brush roller to move up and down. The idler roller assembly is mounted on the frame and located below the strip steel. The idler roller assembly is configured to support the strip steel upwards. The pressure roller assembly is mounted on the frame and located above the strip steel, and the pressure roller assembly is configured to press downwards onto the strip steel. The strip passes through the frame from front to back and passes through the first working position and the second working position in sequence. The lower brush roller, upper brush roller, support roller group and pressure roller group keep the strip at a horizontal plane, and the lower brush roller and upper brush roller respectively brush the lower and upper surfaces of the strip. The idler roller assembly includes an upper idler roller and a lower idler roller. The upper idler roller is located below the upper brush roller, and the lower idler roller is located beside the lower brush roller. The lower idler roller is configured to support the strip at the first working position, and the upper idler roller is configured to support the strip at the second working position. The frame is also equipped with a swing seat, which spans across the second working position. The swing seat is rotatably mounted relative to the frame, and the upper idler roller is mounted on the swing seat. The frame includes a first column, a second column and a third column arranged sequentially from front to back. A third lower crossbeam is provided on the third column. The third lower crossbeam is located below the upper brush roller, and the swing seat is rotatably mounted on the third lower crossbeam. The second column is provided with a second lower crossbeam, and the second lower crossbeam is provided with a support seat. The support seat is positioned facing the third lower crossbeam. The swing seat is positioned across the third lower crossbeam and the support seat. A gas spring is rotatably provided on the support seat. The gas spring is configured to control the rotation of the swing seat relative to the frame.

2. The steel strip brush unit according to claim 1, characterized in that: The first working position is located between the first and second columns, and the second working position is located between the second and third columns.

3. The steel strip brush unit according to claim 1, characterized in that: A bearing seat is fixed on the third lower crossbeam. A rotating shaft is mounted on the bearing seat and passes through the swing seat. The swing seat is rotatably mounted on the bearing seat via the rotating shaft.

4. The steel strip brush unit according to claim 1, characterized in that: There are two support seats, which are spaced apart on the second lower crossbeam, and a limiting component is provided between the support seats.

5. The steel strip brush unit according to claim 4, characterized in that: The limiting assembly includes a limiting seat and a limiting rod. The limiting seat is fixedly installed on the second lower crossbeam and faces the third lower crossbeam. The limiting rod is arranged vertically and is adjustablely set on the limiting seat by a thread.

6. The steel strip brush unit according to claim 1, characterized in that: The lower support roller is mounted on the second lower crossbeam.

7. The steel strip brush unit according to claim 1, characterized in that: The frame is equipped with a lifting seat arranged in the left-right direction. The lifting seat is mounted on the frame in a lifting manner, and the lower roller is mounted on the lifting seat and moves up and down with the lifting seat.

8. The steel strip brush unit according to claim 7, characterized in that: The pressure roller assembly includes an upper pressure roller and a lower pressure roller. The upper pressure roller is located next to the upper brush roller, and the lower pressure roller is located above the lower brush roller. The lower pressure roller is configured to press down on the strip at the first working position, and the upper pressure roller is configured to press down on the strip at the second working position. The lower pressure roller is fixedly mounted on the frame, and the upper pressure roller is lifted and lowered on the frame.

9. The steel strip brush unit according to claim 1, characterized in that: The frame includes a first column, a second column, and a third column arranged sequentially from front to back. The first working position is located between the first column and the second column, and the second working position is located between the second column and the third column. A top seat is provided between the first column and the second column, and a top seat is also provided between the second column and the third column. The lifting mechanism is mounted on the top seat.

10. The steel strip brush unit according to claim 9, characterized in that: Each of the top seats is equipped with a transverse movement mechanism; the transverse movement mechanism includes a slide rail and a moving seat. The slide rail is arranged on the front and rear sides of the hollowed-out part of the top seat, and the moving seat is slidably mounted on the slide rail and driven by the transverse movement drive motor to move the moving seat on the slide rail in the left and right direction.

11. The steel strip brush unit according to claim 10, characterized in that: The lifting mechanism is mounted on the sliding seat and includes a lifting guide rod and a lifting drive motor for controlling the lifting of the lifting guide rod. The top seat is a hollow rectangular frame structure. The lifting guide rod is inserted into the movable seat and passes through the hollow of the top seat to reach the first working position or the second working position. The lower end of the lifting guide rod is provided with a brush roller seat for mounting the brush roller.

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