A floating pressure roller device capable of efficiently changing rolls and its usage method

Abstract

The present invention provides a floating pressure roller device capable of efficiently changing rollers and its usage method, which includes a limit block, a base with a track, a roller frame, a pressure roller and a driving device. The driving device, the base with a track, the roller frame and the pressure roller are connected in sequence from top to bottom. The roller frame is slidably connected to the base with a track. The limit block is used to cooperate with the base with a track to axially limit the roller frame. The driving device is used to lift or lower the base with a track. There is a gap between the roller frame and the base with a track. When the pressure roller is working normally, the roller frame is located in the long groove of the base with a track. Since the height of the long groove is greater than the roller diameter of the vertical roller wheel, the roller frame can float up and down in the long groove in the height direction, driving the pressure roller to float up and down. The structure of the present invention is simple and delicate, the position accuracy of the pressure roller during work is high, and rapid and efficient roller changing operations can be realized, having good application and popularization prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of cold rolling mill rolling production, and particularly relates to a floating pressure roll device capable of efficiently changing rolls and a using method thereof. Background Art

[0002] In cold rolling mill equipment, in order to press the strip tightly, a pressure roll is provided above the strip. During operation, the pressure roll presses down to tightly press the strip against the guide plate or the lower roll. During the production of modern high-speed rolling mills, the maintenance and replacement frequency of the pressure roll is also increasing day by day.

[0003] In traditional cold rolling mills, the pressure roll generally uses bolts to fasten the roll bearing seat to the pressure roll support driven by a hydraulic cylinder. When maintaining and replacing the pressure roll, the bolts need to be removed, and then the pressure roll is moved away. When the pressure roll is reset, it is fastened to the pressure roll support using bolts. The entire roll-changing process is time-consuming and laborious, and the efficiency is extremely low. Summary of the Invention

[0004] The purpose of the present invention is to provide a floating pressure roll device capable of efficiently changing rolls, so as to overcome the above-mentioned technical problems existing in the prior art.

[0005] Another purpose of the present invention is to provide a using method of the floating pressure roll device capable of efficiently changing rolls, so as to quickly and efficiently remove, move away and reset the pressure roll.

[0006] For this reason, the technical solution provided by the present invention is as follows:

[0007] A floating pressure roll device capable of efficiently changing rolls includes a limit block, a base with a track, a roll frame, a pressure roll and a driving device. The driving device, the base with a track, the roll frame and the pressure roll are connected in sequence from top to bottom. The roll frame is slidably connected to the base with a track. The limit block is used to cooperate with the base with a track to axially limit the roll frame. The driving device is used to lift or lower the base with a track. There is a gap between the roll frame and the base with a track.

[0008] One side of the base with a track is provided with a limit plate, and the other side is provided with a limit groove, which cooperates with the limit block.

[0009] The cross-section of the base with a track is an inverted U-shaped structure. The base with a track includes a long groove, a roll-changing track and a positioning surface. The long groove is arranged inside the base with a track. The two side surfaces of the long groove are guiding surfaces. The roll-changing track is located on the lower surface of the long groove. The positioning surface is located on the lower surface of the base with a track.

[0010] The roll frame includes a roll frame body, vertical roll wheels and side roll wheels. The roll frame body includes a flat plate and a vertical plate. The cross-section after the connection of the flat plate and the vertical plate is an inverted T-shaped structure. The vertical roll wheels and the side roll wheels are both in multiple groups and are symmetrically arranged on both sides of the vertical plate.

[0011] The pressure roller includes a roller and bearing seats provided on both sides of the roller. A handle is provided on one of the bearing seats, and the bearing seats are fixedly connected to the roller frame.

[0012] The driving device is an oil cylinder, a cylinder or a motor, and the base with a track is fixedly connected to the driving device.

[0013] The widths of both side surfaces of the long groove are equal to the widths of the outer tangent surfaces of the two side roller wheels, and the height of the long groove is greater than the roller diameter of the vertical roller wheel.

[0014] The vertical plate is provided with a first shaft hole and a convex block. The convex blocks correspond to the side roller wheels one by one. A group of vertical roller wheels are symmetrically arranged on both sides of the vertical plate through the axis of the wheel passing through the first shaft hole;

[0015] The convex blocks are symmetrically arranged on both sides of the vertical plate. The convex blocks are provided with grooves and second shaft holes. The side roller wheels are arranged in the grooves. The second shaft holes are arranged at the upper and lower ends of the grooves. The axial directions of the vertical roller wheels and the side roller wheels are perpendicular.

[0016] A method for using a floating pressure roller device capable of efficiently changing rollers. When the pressure roller is working normally, the vertical plate of the roller frame is located in the long groove of the base with a track. The gap between the two enables the roller frame to float up and down along the height direction of the long groove, driving the pressure roller to float up and down. At this time, the vertical roller wheels fall on the roller changing track surface;

[0017] When the pressure roller presses the strip, the driving device drives the base with a track to press down. When the pressure roller contacts the surface of the strip, the driving device continues to press down. At this time, the lower surface of the base with a track is closely attached to the upper surface of the flat plate of the roller frame, realizing positioning in the height direction, ensuring the flatness tolerance of the pressure roller, and the vertical roller wheels are separated from the roller changing track. All side roller wheels are closely attached to the guiding surfaces on both sides of the long groove, realizing positioning of the pressure roller in the rolling direction of the rolling mill, ensuring the parallelism tolerance between the pressure roller and other rollers of the rolling mill.

[0018] When the pressure roller needs to be changed, the driving device lifts the base with a track. At this time, the vertical roller wheels fall on the roller changing track surface, and the upper surface of the flat plate of the roller frame is separated from the positioning surface of the base with a track. The limit block is taken out, and then the entire roller frame and the pressure roller are pulled out of the base with a track and lifted away by the workshop crane;

[0019] When the replaced pressure roller is reset, the workshop crane is used to lift the roller frame and the pressure roller as a whole to the side of the base with a track. The vertical plate of the roller frame is aligned with the long groove in the base, the pressure roller is pushed in for reset, and then the limit block is inserted into the limit groove to complete the roller change.

[0020] The beneficial effects of the present invention are:

[0021] The floating pressure roller device capable of efficiently changing rolls provided by the present invention, when the pressure roller is working normally, the roller frame is located in the long groove of the base with a track. Since the height of the long groove is greater than the roller diameter of the vertical roller wheel, the roller frame can float up and down in the long groove in the height direction, driving the pressure roller to float up and down.

[0022] When the pressure roller presses the strip, the lower surface of the base with a track will closely adhere to the upper surface of the flat plate of the roller frame to achieve positioning in the height direction, so as to ensure the flatness tolerance of the pressure roller. All the side roller wheels on both sides of the roller frame closely adhere to the guiding surfaces on both sides of the long groove, realizing the positioning of the pressure roller in the rolling direction of the rolling mill, so as to ensure the parallelism tolerance between the pressure roller and other rollers of the rolling mill.

[0023] In the present invention, the limit block is inserted into the limit groove of the base with a track, one side of the roller frame closely adheres to the limit plate, and the other side is locked by the limit block, realizing the axial positioning of the pressure roller.

[0024] The structure of the present invention is simple and delicate. The position accuracy of the pressure roller during operation is high, and it can realize rapid and efficient roll changing operations, having good application and promotion prospects.

[0025] To make the above content of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the attached drawings, makes detailed descriptions as follows. Brief Description of the Drawings

[0026] Figure 1 is the front view of an embodiment of the present invention;

[0027] Figure 2 is the left view of an embodiment of the present invention;

[0028] Figure 3 is the isometric view of the base with a track;

[0029] Figure 4 is the isometric view of the roller frame and the pressure roller;

[0030] Figure 5 is the cross-sectional view of the working position of the present invention;

[0031] Figure 6 Cross-sectional view of the roll changing position or the pressure roller being lifted of the present invention.

[0032] In the figure:

[0033] Description of the reference numerals in the drawings:

[0034] 1. Limit block; 2. Base with track; 3. Roller rack; 4. Pressure roller; 5. Driving device; 6. Vertical roller wheel; 7. Side roller wheel; 8. Roller rack body; 9. Long groove; 10. Roller changing track; 11. Positioning surface; 12. Guiding surface; 13. Flat plate; 14. Vertical plate; 15. Handle; 16. First shaft hole; 17. Bump; 18. Groove; 19. Second shaft hole; 20. Limit groove; 21. Strip material. Detailed implementation mode

[0035] The following specific embodiments illustrate the implementation modes of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0036] It should be noted that in the present invention, the up, down, left, and right in the figures are regarded as the up, down, left, and right of the floating pressure roller device capable of efficiently changing rollers described in this specification.

[0037] Now, refer to the accompanying drawings to introduce the exemplary implementation modes of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely, and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary implementation modes shown in the accompanying drawings are not limitations on the present invention. In the drawings, the same unit / element uses the same reference numeral.

[0038] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the ordinary meaning understood by those skilled in the art. In addition, it can be understood that the terms defined in the commonly used dictionary should be understood as having a meaning consistent with the context of their related fields, and should not be understood as idealized or overly formal meanings.

[0039] Embodiment 1:

[0040] This embodiment provides a floating pressure roller device capable of efficiently changing rollers, including a limit block 1, a base 2 with a track, a roller rack 3, a pressure roller 4, and a driving device 5. The driving device 5, the base 2 with a track, the roller rack 3, and the pressure roller 4 are connected in sequence from top to bottom. The roller rack 3 is slidably connected to the base 2 with a track. The limit block 1 is used to cooperate with the base 2 with a track to axially limit the roller rack 3. The driving device 5 is used to lift or lower the base 2 with a track. There is a gap between the roller rack 3 and the base 2 with a track. As Figure 1 shown.

[0041] Specifically, the working process or application process of the floating pressure roller device capable of efficiently changing rollers provided in this embodiment is as follows:

[0042] Since there is a gap between the roller frame 3 and the base 2 with a track, the roller frame 3 can float up and down. When the pressure roller 4 is working, the driving device 5 presses down, driving the pressure roller 4 to press on the strip 21, and the lower surface of the base 2 with a track closely adheres to the upper surface of the roller frame 3. When changing the roller of the pressure roller 4, the driving device 5 lifts the pressure roller 4 through the roller frame 3 and takes out the limit block 1 from the limit groove 20. The operator can easily pull out the roller frame 3 and the pressure roller 4 outside the rolling mill.

[0043] The structure of the present invention is simple and delicate. The pressure roller 4 has high position accuracy during operation, and the entire roller changing operation is fast and efficient, having good application and popularization prospects.

[0044] Embodiment 2:

[0045] This embodiment provides a floating pressure roller device capable of efficiently changing rollers, including a limit block 1, a base 2 with a track, a roller frame 3, a pressure roller 4, and a driving device 5. The driving device 5, the base 2 with a track, the roller frame 3, and the pressure roller 4 are connected in sequence from top to bottom. The limit block 1 is used to cooperate with the base 2 with a track to axially limit the roller frame 3. The driving device 5 is used to lift or lower the base 2 with a track, and there is a gap between the roller frame 3 and the base 2 with a track. As Figure 1 and Figure 2 shown.

[0046] One side of the base 2 with a track is provided with a limit plate, and the other side is provided with a limit groove 20, and the limit groove 20 cooperates with the limit block 1.

[0047] The base 2 with a track has a limit plate on the opposite side of the side where the pressure roller 4 is removed, and a limit groove 20 on the side where the pressure roller 4 is removed. The limit block 1 can be inserted into the limit groove 20 when the pressure roller 4 is working. The limit plate and the limit block 1 axially lock the roller frame 3. Among them, the limit block 1 is a steel rectangular block.

[0048] Embodiment 3:

[0049] This embodiment provides a floating pressure roller device capable of efficiently changing rollers, including a limit block 1, a base 2 with a track, a roller frame 3, a pressure roller 4, and a driving device 5. The driving device 5, the base 2 with a track, the roller frame 3, and the pressure roller 4 are connected in sequence from top to bottom. The limit block 1 is used to cooperate with the base 2 with a track to axially limit the roller frame 3. The driving device 5 is used to lift or lower the base 2 with a track, and there is a gap between the roller frame 3 and the base 2 with a track.

[0050] As Figure 3As shown in the figure, the base 2 with tracks has an inverted U-shaped cross-section. The base 2 with tracks includes a long groove 9, a roll-changing track 10, and a positioning surface 11. The long groove 9 is provided inside the base 2 with tracks. The two side surfaces of the long groove 9 are guiding surfaces 12. The roll-changing track 10 is located on the lower surface of the long groove 9. The positioning surface 11 is located on the lower surface of the base 2 with tracks.

[0051] The base 2 with tracks has an inverted U-shaped structure. The upper surface of the base is connected to the drive by bolts. There is a precision-machined long groove 9 inside the base. The two side surfaces of the long groove 9 are guiding surfaces 12 for the side roller wheels 7. The widths of the two side surfaces are equal to the widths of the outer tangent surfaces of the two side roller wheels 7. The height of the long groove 9 is greater than the roller diameter of the vertical roller wheel 6. The lower surface of the long groove 9 is a precision-machined roll-changing track 10. The inverted U-shaped lower surface of the base 2 with tracks is a precision-machined positioning surface 11. When the pressure roller 4 is working, the upper surface of the flat plate 13 of the roller frame 3 closely adheres to this positioning surface 11 to ensure the flatness tolerance of the pressure roller 4.

[0052] Example 4:

[0053] This embodiment provides a floating pressure roller device capable of efficiently changing rolls, including a limit block 1, a base 2 with tracks, a roller frame 3, a pressure roller 4, and a drive device 5. The drive device 5, the base 2 with tracks, the roller frame 3, and the pressure roller 4 are connected in sequence from top to bottom. The limit block 1 is used to cooperate with the base 2 with tracks to axially limit the roller frame 3. The drive device 5 can lift or lower the base 2 with tracks. There is a gap between the roller frame 3 and the base 2 with tracks.

[0054] The roller frame 3 includes a roller frame body 8, a vertical roller wheel 6, and side roller wheels 7. The roller frame body 8 includes a flat plate 13 and a vertical plate 14. The cross-section after the flat plate 13 and the vertical plate 14 are connected is an inverted T-shaped structure. The vertical roller wheel 6 and the side roller wheels 7 are both in multiple groups and are symmetrically arranged on both sides of the vertical plate 14.

[0055] As Figure 4 shown in the figure, the roller frame 3 is composed of a vertical roller wheel 6, side roller wheels 7, and a roller frame body 8. Among them, the roller frame body 8 has an inverted T-shaped structure. The lower surface of the flat plate 13 is fixed to the bearing seat of the pressure roller 4 by bolts. There are several first shaft holes 16 processed on both sides of the upper part of the vertical plate 14 of the roller frame body 8, and several convex blocks 17 symmetrically distributed. Grooves 18 and second shaft holes 19 are processed on the convex blocks 17. The vertical roller wheel 6 is symmetrically installed on both sides of the vertical plate 14 through the axis of the wheel. The side roller wheels 7 are symmetrically installed in the grooves 18 of the two convex blocks 17 through the axis of the wheel.

[0056] The pressure roller 4 is composed of a roller and bearing seats on both sides. Among them, a handle 15 is installed on the bearing seat on the removal side for pushing and pulling the pressure roller 4 during roll changing. The bearing seat of the pressure roller 4 is connected to the roller frame 3 by bolts.

[0057] Example 5:

[0058] This embodiment provides a floating pressure roller device capable of efficiently changing rollers, including a limit block 1, a base 2 with tracks, a roller frame 3, a pressure roller 4, and a driving device 5.

[0059] The pressure roller 4 is composed of a roller and bearing seats on both sides. A handle 15 is installed on the bearing seat on the removal side for pushing and pulling the pressure roller 4 during roller changing. The bearing seat of the pressure roller 4 is connected to the roller frame 3 by bolts.

[0060] The roller frame 3 is composed of vertical roller wheels 6, side roller wheels 7, and a roller frame body 8. The roller frame body 8 has an inverted T-shaped structure. The lower surface of the flat plate 13 is fixed to the bearing seat of the pressure roller 4 by bolts. A number of first shaft holes 16 are machined on both sides of the vertical plate 14 at the upper part of the roller frame body 8, and a number of symmetrically distributed convex blocks 17 are also provided. Grooves 18 and second shaft holes 19 are machined on the convex blocks 17. The vertical roller wheels 6 are symmetrically installed on both sides of the vertical plate 14 through the axes of the wheels, and the side roller wheels 7 are symmetrically installed in the grooves 18 of the convex blocks 17 on both sides through the axes of the wheels.

[0061] The base 2 with tracks has an inverted U-shaped structure. The upper surface of the base is connected to the driving device 5 by bolts. There is a finely machined long groove 9 inside the base. The two side surfaces of the long groove 9 are guiding surfaces 12 for the side roller wheels 7, and the widths of the two side surfaces are equal to the widths of the outer tangent surfaces of the side roller wheels 7 on both sides. The height of the long groove 9 is greater than the roller diameter of the vertical roller wheels 6. The lower surface of the long groove 9 is a finely machined roller-changing track 10. The inverted U-shaped lower surface of the base 2 with tracks is a finely machined positioning surface 11. When the pressure roller 4 is working, the upper surface of the flat plate 13 of the roller frame 3 closely adheres to this positioning surface 11 to ensure the flatness tolerance of the pressure roller 4.

[0062] There is a limit plate on the opposite side of the removal side of the pressure roller 4 on the base 2 with tracks, and a limit groove 20 on the removal side of the pressure roller 4. The limit block 1 can be inserted into the limit groove 20 when the pressure roller 4 is working. The limit plate and the limit block 1 axially lock the roller frame 33. The limit block 1 is a steel rectangular block.

[0063] The driving device 5 is located above the base 2 with tracks and can be an oil cylinder, a cylinder, or a motor, and is used to lift and lower the base 2 with tracks.

[0064] The working principle is as follows:

[0065] When the pressure roller 4 is working normally, the roller frame 3 is located in the long groove 9 of the base 2 with tracks. Since the height of the long groove 9 is greater than the roller diameter of the vertical roller wheels 6, the roller frame 3 can float up and down in the long groove 9 in the height direction, driving the pressure roller 4 to float up and down. When the pressure roller 4 does not press the strip 21, the vertical roller wheels 6 fall on the roller-changing track 10 surface, as shown in Figure 6 the sectional view of the lifted and roller-changing position of the pressure roller 4 shown.

[0066] The driving device 5 presses down the base 2 of the belt track. When the pressure roller 4 contacts the surface of the strip 21, the driving device 5 continues to press down. At this time, the lower surface of the base 2 of the belt track will closely adhere to the upper surface of the flat plate 13 of the roller frame 3 to achieve positioning in the height direction, so as to ensure the flatness tolerance of the pressure roller 4, and the vertical roller 6 is separated from the surface of the roll-changing track 10, as Figure 5 shown in the sectional view of the working position of the pressure roller 4 in the middle. All the side rollers 7 on both sides of the roller frame 3 closely adhere to the two side guiding surfaces 12 of the long groove 9 to achieve the positioning of the pressure roller 4 in the rolling direction of the rolling mill, so as to ensure the parallelism tolerance between the pressure roller 4 and other rollers of the rolling mill, as Figure 2 shown. The limit block 1 is inserted into the limit groove 20 of the base 2 of the belt track. One side of the roller frame 3 closely adheres to the limit plate, and the other side is locked by the limit block 1 to achieve the axial positioning of the pressure roller 4.

[0067] When the pressure roller 4 needs to be changed, the driving device 5 lifts the base 2 of the belt track. At this time, the vertical roller 6 lands on the surface of the roll-changing track 10, and the upper surface of the flat plate 13 of the roller frame 3 is separated from the lower surface of the base 2 of the belt track, as Figure 6 shown in the sectional view of the lifting and roll-changing position of the pressure roller 4. Take out the limit block 1 from the limit groove 20. At this time, the operator can easily pull out the entire roller frame 3 and the pressure roller 4 from outside the base 2 of the belt track through the handle 15 on the bearing seat of the pressure roller 4 and use the workshop overhead crane to lift it away. When the replaced pressure roller 4 needs to be reset, use the workshop overhead crane to lift the roller frame 3 and the pressure roller 4 as a whole to the side of the base 2 of the belt track. Align the roller frame 3 with the precision-machined long groove 9 in the base. The operator can easily push the pressure roller 4 into the reset position. After resetting, insert the limit block 1 into the limit groove 20. Without adjustment, the pressure roller 4 can start working.

[0068] The pressure roller 4 of this structure has high position accuracy during operation, and the entire roll-changing operation is fast and efficient.

[0069] Embodiment 6:

[0070] This embodiment provides a method for using a floating pressure roller device with efficient roll changing. When the pressure roller 4 is working normally, the vertical plate 14 of the roller frame 3 is located in the long groove 9 of the base 2 of the belt track. The gap between the two enables the roller frame 3 to float up and down along the height direction of the long groove 9 and drives the pressure roller 4 to float up and down. At this time, the vertical roller 6 lands on the surface of the roll-changing track 10;

[0071] When the pressure roller 4 presses the strip 21, the driving device 5 drives the base 22 of the belt track to press down. When the pressure roller 4 contacts the surface of the strip 21, the driving device 5 continues to press down. At this time, the lower surface of the base 2 of the belt track closely adheres to the upper surface of the flat plate 13 of the roller frame 3 to achieve positioning in the height direction, ensuring the flatness tolerance of the pressure roller 4, and the vertical roller 6 is separated from the roll-changing track 10, and all the side rollers 7 closely adhere to the two side guiding surfaces 12 of the long groove 9 to achieve the positioning of the pressure roller 4 in the rolling direction of the rolling mill, ensuring the parallelism tolerance between the pressure roller 4 and other rollers of the rolling mill.

[0072] Example 7:

[0073] On the basis of Example 6, this example provides a method for using a floating pressure roller device capable of efficiently changing rollers. When the pressure roller 4 needs to be replaced, the driving device 5 lifts the base 2 with tracks. At this time, the vertical roller wheel 6 lands on the roller-changing track 10 surface, and the upper surface of the flat plate 13 of the roller frame 3 is separated from the positioning surface 11 of the base 2 with tracks. The limit block 1 is taken out, and then the entire roller frame 3 and the pressure roller 4 are pulled out of the base 2 with tracks and lifted away by the workshop overhead crane.

[0074] When the replaced pressure roller 4 is reset, the workshop overhead crane is used to lift the roller frame 3 and the pressure roller 4 as a whole to the side of the base 2 with tracks. The vertical plate 14 of the roller frame 3 is aligned with the long groove 9 in the base, the pressure roller 4 is pushed into place, and then the limit block 1 is inserted into the limit groove 20 to complete the roller change.

[0075] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present invention, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A method for using a floating pressure roller device capable of efficiently changing rollers, characterized in that: The floating pressure roller device includes a limit block (1), a base with a track (2), a roller frame (3), a pressure roller (4) and a driving device (5). The driving device (5), the base with a track (2), the roller frame (3) and the pressure roller (4) are connected in sequence from top to bottom. The roller frame (3) is slidably connected to the base with a track (2). The limit block (1) is used to cooperate with the base with a track (2) to axially limit the roller frame (3). The driving device (5) is used to lift or lower the base with a track (2). There is a gap between the roller frame (3) and the base with a track (2). The cross-section of the base with a track (2) is an inverted U-shaped structure. The base with a track (2) includes a long groove (9), a roll-changing track (10) and a positioning surface (11). The long groove (9) is arranged inside the base with a track (2). The two side surfaces of the long groove (9) are guiding surfaces (12). The roll-changing track (10) is located on the lower surface of the long groove (9). The positioning surface (11) is located on the lower surface of the base with a track (2). The roller frame (3) includes a roller frame body (8), vertical roller wheels (6) and side roller wheels (7). The roller frame body (8) includes a flat plate (13) and a vertical plate (14). The cross-section of the flat plate (13) and the vertical plate (14) after connection is an inverted T-shaped structure. The vertical roller wheels (6) and the side roller wheels (7) are both in multiple groups and are symmetrically arranged on both sides of the vertical plate (14). When the pressure roller (4) is working normally, the vertical plate (14) of the roller frame (3) is located in the long groove (9) of the base with a track (2). The gap between the two enables the roller frame (3) to float up and down along the height direction of the long groove (9) and drives the pressure roller (4) to float up and down. At this time, the vertical roller wheels (6) rest on the roll-changing track (10) surface. When the pressure roller (4) presses the strip (21), the driving device (5) drives the base with a track (2) to press down. When the pressure roller (4) contacts the surface of the strip (21), the driving device (5) continues to press down. At this time, the lower surface of the base with a track (2) closely adheres to the upper surface of the flat plate (13) of the roller frame (3) to achieve positioning in the height direction and ensure the flatness tolerance of the pressure roller (4). The vertical roller wheels (6) are separated from the roll-changing track (10), and all the side roller wheels (7) closely adhere to the two guiding surfaces (12) of the long groove (9) to achieve the positioning of the pressure roller (4) in the rolling direction of the rolling mill and ensure the parallelism tolerance between the pressure roller (4) and other rollers of the rolling mill. When the pressure roller (4) needs to be changed, the driving device (5) lifts the base with a track (2). At this time, the vertical roller wheels (6) rest on the roll-changing track (10) surface. The upper surface of the flat plate (13) of the roller frame (3) is separated from the positioning surface (11) of the base with a track (2). The limit block (1) is taken out, and then the entire roller frame (3) and the pressure roller (4) are pulled out of the base with a track (2) and lifted away by the workshop overhead crane. When the replaced pressure roller (4) is reset, use the workshop overhead crane to lift the roller frame (3) and the pressure roller (4) as a whole to the side of the base (2) with a track. Align the vertical plate (14) of the roller frame (3) with the long groove (9) in the base, push the pressure roller (4) into reset, and then insert the limit block (1) into the limit groove (20) to complete the roller replacement.

2. The method for using a floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: One side of the base (2) with a track is provided with a limit plate, and the other side is provided with a limit groove (20), and the limit groove (20) cooperates with the limit block (1).

3. The method for using a floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: The pressure roller (4) includes a roller and bearing seats arranged on both sides of the roller. A handle (15) is provided on one of the bearing seats, and the bearing seats are fixedly connected to the roller frame (3).

4. The method for using a floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: The driving device (5) is an oil cylinder, a cylinder or a motor, and the base (2) with a track is fixedly connected to the driving device (5).

5. The method for using a floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: The widths of the two side surfaces of the long groove (9) are equal to the outer cutting widths of the two side roller wheels (7), and the height of the long groove (9) is greater than the roller diameter of the vertical roller wheel (6).

6. The method for using a floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: The vertical plate (14) is provided with a first shaft hole (16) and a convex block (17). The convex blocks (17) correspond to the side roller wheels (7) one by one. A group of vertical roller wheels (6) are symmetrically arranged on both sides of the vertical plate (14) through the axis of the wheel passing through the first shaft hole (16); the convex blocks (17) are symmetrically arranged on both sides of the vertical plate (14). Grooves (18) and second shaft holes (19) are provided on the convex blocks (17). The side roller wheels (7) are arranged in the grooves (18), and the second shaft holes (19) are arranged at the upper and lower ends of the grooves (18). The axes of the vertical roller wheels (6) and the side roller wheels (7) are perpendicular.

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