Roll changing device for rolling mills

Abstract

The application provides a rolling mill roll changing device, and relates to the technical field of steel rolling. The rolling mill roll changing device comprises a frame body, a first cover plate, a work roll transfer train, a chassis structure and a hydraulic cylinder. The frame body is slidingly connected to the chassis structure. The hydraulic cylinder is arranged on the chassis structure. The hydraulic cylinder is used to drive the frame body to slide relative to the chassis structure, so that the first cover plate and a backup roll connected to the frame body move together in a direction away from the rolling mill. The frame body is provided with a first longitudinal track. The chassis structure is provided with a second longitudinal track. The hydraulic cylinder is used to drive the frame body to slide relative to the chassis structure, so that the first longitudinal track is aligned with the second longitudinal track. The work roll transfer train is used to replace the work roll and move on the aligned second longitudinal track and first longitudinal track. Compared with the prior art, the rolling mill roll changing device solves the problem that a large cover plate needs to be manually lifted when the backup roll of the rolling mill is replaced, and improves the automation level and production efficiency of the rolling mill roll changing process.

Description

A rolling mill roll changing device Technical Field

[0001] This invention relates to the field of steel rolling technology, and more specifically, to a rolling mill roll changing device. Background Technology

[0002] Currently, steel companies are building multiple hot rolling production lines based on their own product positioning to produce hot-rolled strip products with thicknesses of 1.2-25.4mm, meeting market demands for bridge structural steel, offshore drilling platform structural steel, container cylinders, mechanical structural steel, mold steel, automotive steel, pipeline steel, duplex steel, and other fields.

[0003] Among them, the roughing mill is the core equipment of the hot continuous rolling production line. For example, the four-high roughing mill often needs to change the rolls through the roll changing device to ensure product quality. However, the existing roll changing device requires manual lifting of large cover plates when changing the support rolls. The roll changing is time-consuming and labor-intensive, and the operation process is relatively complicated, resulting in a low level of automation and production efficiency in the roll changing process of the four-high roughing mill. Summary of the Invention

[0004] The problem this invention aims to solve is: how to improve the automation level and production efficiency of the roll changing process in roughing mills.

[0005] This invention provides a rolling mill roll changing device, comprising: a frame, a first cover plate, a work roll transfer train, a base frame structure, and a hydraulic cylinder; the frame is slidably connected to the base frame structure and is used to connect with a support roll; the hydraulic cylinder is disposed on the base frame structure, and the telescopic end of the hydraulic cylinder is connected to the frame; the first cover plate is disposed on the frame, and the hydraulic cylinder is used to drive the frame to slide relative to the base frame structure, so that the first cover plate and the support roll connected to the frame move together toward a direction away from the rolling mill; the frame is provided with a first longitudinal track; the base frame structure is provided with a second longitudinal track, and the second longitudinal track and the first longitudinal track are located in the same plane; the hydraulic cylinder is used to drive the frame to slide relative to the base frame structure to align the first longitudinal track and the second longitudinal track; the work roll transfer train is used to change work rolls and moves on the aligned second longitudinal track and the first longitudinal track.

[0006] The rolling mill roll changing device provided by this invention has, but is not limited to, the following beneficial effects compared to the prior art:

[0007] The rolling mill roll changing device of this invention, when a work roll needs to be replaced, moves the frame via a hydraulic cylinder to align the first longitudinal track with the second longitudinal track. At this time, the first cover plate abuts against one side of the work roll, and the work roll transfer train can remove the old work roll from the rolling mill on the first longitudinal track. During the removal of the old work roll from the rolling mill, the first cover plate supports the work roll. Then, the work roll transfer train can transport the old work roll to a designated position. When replacing the new work roll, the work roll transfer train can receive the new work roll from the end of the second longitudinal track away from the first longitudinal track, and then move it towards the first longitudinal track with the new work roll. After moving to the first longitudinal track... The work roll transfer train can push new work rolls into the rolling mill. During this process, the first cover plate also serves to support the work rolls. When it is necessary to replace the support roll, the support roll is first connected to the frame, and then the frame, the first cover plate, and the support roll are moved together away from the rolling mill by a hydraulic cylinder. After the support roll is moved to the roll changing position, it can be lifted by an overhead crane to complete the replacement operation. In the prior art, the first cover plate is in a fixed state. If the support roll needs to be replaced, the cover plate needs to be lifted manually to make room for the support roll replacement. Replacing the support roll is not only time-consuming and labor-intensive, but also complex, resulting in low automation and production efficiency in the roughing mill roll changing process. The mill roll changing device of the present invention solves the problem of manually lifting a large cover plate when changing the support roll in the roughing mill, compared with the prior art, making the roll changing time shorter, the operation simpler, and improving the automation and production efficiency of the roughing mill roll changing process.

[0008] Optionally, the base frame structure is provided with a first transverse track, and the frame body is slidably connected to the first transverse track.

[0009] Optionally, the mill roll changing device further includes a slide block for mounting the support roll, the slide block being connected to the frame and for sliding on the first transverse track.

[0010] Optionally, the frame and the slide are connected by a key.

[0011] Optionally, the telescopic end of the hydraulic cylinder is used to connect to the slide via a clamping plate.

[0012] Optionally, a second transverse track is provided on the first cover plate, the extension direction of the second transverse track being perpendicular to the extension directions of the first longitudinal track and the second longitudinal track, and the work roll is used to slide on the second transverse track to advance or pull out the rolling mill.

[0013] Optionally, the base frame structure is provided with two segments of the second longitudinal rails at intervals, and the hydraulic cylinder is used to drive the frame body to slide relative to the base frame structure, so as to move the first longitudinal rail between the two segments of the second longitudinal rails.

[0014] Optionally, the rolling mill roll changing device further includes a second cover plate, which is connected to the foundation via a column. The second cover plate is provided with a third transverse track for transferring the work roll, which is used to transport the work roll to the grinding station.

[0015] Optionally, the extension directions of the first longitudinal track and the second longitudinal track are parallel to the rolling direction of the rolling mill.

[0016] Optionally, the base frame structure is used to be connected to the foundation by anchor bolts. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of the mill roll changing device according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the structure of the mill roll changing device according to an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the structure of the rolling mill roll changing device according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Frame; 11. First longitudinal track; 2. First cover plate; 3. Work roll transfer train; 4. Base frame structure; 41. Second longitudinal track; 5. Hydraulic cylinder; 6. Slide; 7. Second cover plate; 100. Support roller; 200. Work roll. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] In the description of this invention, the orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0026] Furthermore, in the attached diagram, the Z-axis represents the vertical direction, that is, the up-down position, and the positive direction of the Z-axis (that is, the direction the arrow points to) represents up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents down; in the attached diagram, the X-axis represents the horizontal direction, that is, the left-right position, and the positive direction of the X-axis (that is, the direction the arrow points to) represents right, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents left; in the attached diagram, the Y-axis represents the vertical direction, that is, the front-back position, and the positive direction of the Y-axis (that is, the direction the arrow points to) represents front, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents back.

[0027] It should also be noted that the aforementioned X-axis, Y-axis and Z-axis are used only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0028] As shown in Figures 1 to 3, the rolling mill roll changing device of this embodiment includes: a frame 1, a first cover plate 2, a work roll transfer train 3, a base frame structure 4, and a hydraulic cylinder 5; the frame 1 is slidably connected to the base frame structure 4, and the frame 1 is used to connect with the support roll 100; the hydraulic cylinder 5 is disposed on the base frame structure 4, and the telescopic end of the hydraulic cylinder 5 is connected to the frame 1; the first cover plate 2 is disposed on the frame 1, and the hydraulic cylinder 5 is used to drive the frame 1 to slide relative to the base frame structure 4, so that the first cover plate 2 and the frame 1 slide together. The support rolls 100 are moved together toward the direction away from the rolling mill; the frame 1 is provided with a first longitudinal track 11; the base frame structure 4 is provided with a second longitudinal track 41, and the second longitudinal track 41 and the first longitudinal track 11 are located on the same plane; the hydraulic cylinder 5 is used to drive the frame 1 to slide relative to the base frame structure 4 to align the first longitudinal track 11 and the second longitudinal track 41; the work roll transfer train 3 is used to replace the work roll 200 and move on the aligned second longitudinal track 41 and the first longitudinal track 11.

[0029] In this embodiment, as shown in Figures 1 and 2, when the work roll 200 needs to be replaced, the frame 1 is moved by the hydraulic cylinder 5, so that the first longitudinal track 11 is aligned with the second longitudinal track 41. At this time, the first cover plate 2 abuts against one side of the work roll 200. The work roll transfer train 3 can remove the old work roll 200 from the rolling mill on the first longitudinal track 11. During the process of removing the old work roll 200 from the rolling mill, the first cover plate 2 plays a supporting role for the work roll 200. Then, the work roll transfer train 3 can transport the old work roll 200 to the designated position. When replacing the new work roll 200, the work roll transfer train 3 can receive the new work roll 200 from the end of the second longitudinal track 41 away from the first longitudinal track 11, and then move with the new work roll 200 toward the direction closer to the first longitudinal track 11 (Y-axis direction in Figure 2). After moving to the first longitudinal track 11, the work roll transfer train... 3. The new work roll 200 can be pushed into the rolling mill. During this process, the first cover plate 2 also serves to support the work roll 200. As shown in Figures 1 and 3, when the support roll 100 needs to be replaced, the support roll 100 is first connected to the frame 1. Then, the frame 1, the first cover plate 2, and the support roll 100 are driven together to move away from the rolling mill (X-axis direction in Figure 1 or Figure 3) by the hydraulic cylinder 5. After the support roll 100 is moved to the roll changing position (as shown in Figure 3), it can be lifted by an overhead crane to complete the operation of replacing the support roll 100. In the prior art, the first cover plate 2 is in a fixed state. If the support roll 100 needs to be replaced, the first cover plate 2 needs to be lifted manually to make room for the roll changing of the support roll 100. Replacing the support roll 100 is not only time-consuming and labor-intensive, but also complicated in operation, resulting in a low level of automation and production efficiency in the roll changing process of the roughing mill. Compared with the prior art, the mill roll changing device of the present invention solves the problem of manually lifting large cover plates when changing support rolls in roughing mills, making the roll changing time shorter, the operation simpler, and improving the automation level and production efficiency of the roughing mill roll changing process.

[0030] It should be noted that the extension direction of the first longitudinal track 11 and the second longitudinal track 41 is the Y-axis direction in Figure 2, that is, "longitudinal" represents the Y-axis direction in Figure 2; and the transverse direction mentioned later represents the X-axis direction in Figure 1 or Figure 3.

[0031] Optionally, the base frame structure 4 is provided with a first transverse track, and the frame body 1 is slidably connected to the first transverse track. The first transverse track is perpendicular to the longitudinal tracks (first longitudinal track 11 and second longitudinal track 41).

[0032] In this embodiment, as shown in Figure 1 or Figure 3, the base frame structure 4 can be a rectangular frame structure. The base frame structure 4 can be connected to the foundation (e.g., the ground) by anchor bolts. The first transverse track is arranged on the base frame structure 4 along the X-axis direction of Figure 1 or Figure 3. The bottom of the frame body 1 (in the opposite direction of the Z-axis in Figure 1 or Figure 3) can be slidably connected to the first transverse track, that is, the frame body 1 can move along the first transverse track, thereby realizing the movement away from the rolling mill, or aligning the first longitudinal track 11 with the second longitudinal track 41.

[0033] Optionally, the rolling mill roll changing device further includes a slide block 6, on which the support roll 100 is mounted. The slide block 6 is connected to the frame 1 and is used to slide on the first transverse track.

[0034] In this embodiment, as shown in Figure 1 or Figure 3, the slide block 6 is slidably connected to the first transverse track, that is, the slide block 6 can move along the first transverse track. The frame 1 and the slide block 6 can be connected by a key, and the support roller 100 can be connected to the slide block 6 by bolts.

[0035] Optionally, the frame 1 and the slide 6 are connected by a key.

[0036] In this embodiment, as shown in Figure 1 or Figure 3, the frame 1 and the slide 6 can be connected by a key, and the key can be engaged on the slide 6.

[0037] Optionally, the telescopic end of the hydraulic cylinder 5 is used to connect to the slide block 6 via a clamping plate.

[0038] In this embodiment, the telescopic end of the hydraulic cylinder 5 can be connected to the slide block 6 via a clamping plate. That is, when changing the support roll 100 of the rolling mill, the hydraulic cylinder 5 extends and is connected to the slide block 6 via a clamping plate, moving the frame 1 and the slide block 6 away from the rolling mill together. The support roll 100 is moved to the roll changing position and lifted by an overhead crane.

[0039] Optionally, a second transverse track is provided on the first cover plate 2. The extension direction of the second transverse track is perpendicular to the extension direction of the first longitudinal track 11 and the second longitudinal track 41. The work roll 200 is used to slide on the second transverse track to advance or pull out the rolling mill.

[0040] In this embodiment, the second transverse track is arranged on the first cover plate 2 along the X-axis direction in Figure 1 or Figure 3. The work roll 200 can slide on the second transverse track. Therefore, when the work roll 200 is replaced, the work roll transfer train 3 can push or pull the work roll 200 out of the rolling mill through the second transverse track.

[0041] Optionally, two sections of the second longitudinal rail 41 are spaced apart on the base frame structure 4, and the hydraulic cylinder 5 is used to drive the frame 1 to slide relative to the base frame structure 4, so as to move the first longitudinal rail 11 between the two sections of the second longitudinal rail 41.

[0042] In this embodiment, as shown in Figure 2, two sections of second longitudinal rails 41 are spaced apart on the base frame structure 4. The two sections of second longitudinal rails 41 can extend to different workstations respectively. The spacing between the two sections of second longitudinal rails 41 is adapted to the size of the first longitudinal rail 11. After the first longitudinal rail 11 moves between the two sections of second longitudinal rails 41, it can be aligned with the two sections of second longitudinal rails 41 to facilitate the movement of the work roller transfer train 3. That is, the rails used for the work roller transfer train 3 are designed as separate parts, including fixed rails on both sides (second longitudinal rails 41) and a moving rail in the middle (first longitudinal rail 11).

[0043] Optionally, the rolling mill roll changing device further includes a second cover plate 7, which is connected to the foundation via a column and is located above the frame 1. The second cover plate 7 is provided with a third transverse track for transferring the work roll 200, which is used to transport the work roll 200 to the grinding station.

[0044] In this embodiment, as shown in Figures 1 to 3, the second cover plate is located on the moving path of the work roll transfer train 3. The work roll transfer train 3 can move close to the second cover plate 7 to realize the transfer of the work roll 200. The replaced work roll 200 can be transported to the grinding station by the third transverse track on the second cover plate 7. The second cover plate 7 is located above the frame 1. As shown in Figure 3, when the support roll 100 is replaced, the frame 1 will move directly below the second cover plate 7. The second cover plate 7 will not interfere with the frame 1 so that the frame 1 can pass through.

[0045] Optionally, the extending directions of the first longitudinal track 11 and the second longitudinal track 41 are parallel to the rolling direction of the rolling mill.

[0046] In this embodiment, as shown in Figure 2, the extension directions of the first longitudinal track 11 and the second longitudinal track 41 are parallel to the rolling direction of the rolling mill. That is, the first longitudinal track 11 and the second longitudinal track 41 are both in the Y-axis direction of the rolling mill in Figure 2. The front end of the first longitudinal track 11 (positive Y-axis direction in Figure 2) is the inlet side, and the rear end of the first longitudinal track 11 (opposite Y-axis direction in Figure 2) is the outlet side.

[0047] Optionally, the base frame structure 4 is used to be connected to the foundation by anchor bolts.

[0048] In this embodiment, as shown in Figure 1, the base structure 4 can be a frame structure and can be connected to a foundation by anchor bolts, wherein the foundation can be the ground.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0050] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A rolling mill roll changing device, characterized in that, include: The system comprises a frame (1), a first cover plate (2), a work roller transfer train (3), a base frame structure (4), and a hydraulic cylinder (5); the frame (1) is slidably connected to the base frame structure (4), and the frame (1) is used to connect with the support roller (100); the hydraulic cylinder (5) is disposed on the base frame structure (4), and the telescopic end of the hydraulic cylinder (5) is connected to the frame (1); the first cover plate (2) is disposed on the frame (1), and the hydraulic cylinder (5) is used to drive the frame (1) to slide relative to the base frame structure (4), so that the first cover plate (2) and the support roller (100) connected to the frame (1) can slide. 00) Move together toward the direction away from the rolling mill; the frame (1) is provided with a first longitudinal track (11); the base frame structure (4) is provided with a second longitudinal track (41), and the second longitudinal track (41) and the first longitudinal track (11) are located on the same plane; the hydraulic cylinder (5) is used to drive the frame (1) to slide relative to the base frame structure (4) to align the first longitudinal track (11) and the second longitudinal track (41); the work roll transfer train (3) is used to replace the work roll (200) and move on the aligned second longitudinal track (41) and the first longitudinal track (11).

2. The rolling mill roll changing device according to claim 1, characterized in that, The base frame structure (4) is provided with a first transverse track, and the frame body (1) is slidably connected to the first transverse track.

3. The rolling mill roll changing device according to claim 2, characterized in that, It also includes a slide (6) on which the support roller (100) is mounted. The slide (6) is connected to the frame (1) and is used to slide on the first transverse track.

4. The rolling mill roll changing device according to claim 3, characterized in that, The frame (1) and the slide (6) are connected by a key.

5. The rolling mill roll changing device according to claim 3, characterized in that, The telescopic end of the hydraulic cylinder (5) is used to connect to the slide (6) via a clamping plate.

6. The rolling mill roll changing device according to claim 1, characterized in that, The first cover plate (2) is provided with a second transverse track, the extension direction of the second transverse track is perpendicular to the extension direction of the first longitudinal track (11) and the second longitudinal track (41), and the work roll (200) is used to slide on the second transverse track to advance or pull out the mill.

7. The rolling mill roll changing device according to claim 1, characterized in that, The base frame structure (4) is provided with two sections of the second longitudinal rail (41) spaced apart. The hydraulic cylinder (5) is used to drive the frame body (1) to slide relative to the base frame structure (4) so ​​as to move the first longitudinal rail (11) between the two sections of the second longitudinal rail (41).

8. The rolling mill roll changing device according to claim 1, characterized in that, It also includes a second cover plate (7), which is used to be connected to the foundation by a column and is located above the frame (1). The second cover plate (7) is provided with a third transverse track for transferring the work roller (200) and the third transverse track is used to transport the work roller (200) to the grinding station.

9. The rolling mill roll changing device according to claim 1, characterized in that, The first longitudinal track (11) and the second longitudinal track (41) extend in directions parallel to the rolling direction of the rolling mill.

10. The rolling mill roll changing device according to claim 1, characterized in that, The base frame structure (4) is used to connect to the foundation by anchor bolts.

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