A work roll guide for finishing stands of a heavy plate mill

Abstract

The utility model discloses a work roll guide suitable for heavy plate rolling mill finishing, including guide plate and guide support, two guide supports symmetry sets up in the both sides of guide plate, and guide support with the bearing seat both ends of work roll one -to -one corresponding connection, guide plate linear extension along the axis of work roll, be provided with cooperation surface on the guide plate, and the cooperation surface is the circular arc surface that sets up with work roll outer circumferential surface cooperation, and the axis of cooperation surface with the axis of work roll parallel setting, be provided with installation slot and reinforcing groove on cooperation surface, and installation slot and reinforcing groove all linear extension along the axis direction of work roll, and reinforcing groove sets up below installation slot, and installation slot is used for installing the roll cleaner, the utility model discloses reduce the deformation after guide assembly use, improve the life, thereby avoid the guide precision anomaly caused by guide deformation, and the guide precision control that effectively guarantees more fits the needs of rolling mill and reduces production cost is brought about by guide deformation and increases the purchase cost.

Description

Technical Field

[0001] This utility model relates to the technical field of thick plate rolling mill equipment, specifically to a work roll guide suitable for finishing rolling in thick plate rolling mills. Background Technology

[0002] In the production of thick plates, the work roll guide device is a key component to ensure the stability of the rolling process and the quality of the plate. Its main functions are to guide the workpiece accurately into the rolls, prevent deviation or warping, prevent the head / tail of the workpiece from hitting or getting tangled in the rolls, and assist in controlling the plate shape.

[0003] Although the work roll guide in finishing mills is not a core rolling component, it is crucial for equipment protection and production stability. Its design must comprehensively consider rolling speed, strip thickness, temperature, and material properties. For modern high-speed rolling mills, the guide's dynamic adjustment capability and wear resistance directly affect mill operating rate and yield.

[0004] With increasing production and expanding rolling varieties, current guide devices, while meeting the needs of production processes, are prone to deformation during use due to factors such as the increase in steel throughput and differences in material, hardness, and processing of various products. This leads to reduced precision and shortened service life.

[0005] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Summary of the Invention

[0006] To address the aforementioned technical deficiencies, the present invention provides a work roll guide suitable for finishing rolling in a thick plate mill. The guide includes a guide plate and guide supports. Two guide supports are symmetrically arranged on both sides of the guide plate, and each guide support is connected to a bearing seat at one end of the work roll. The guide plate extends linearly along the axis of the work roll. A mating surface is provided on the guide plate; this mating surface is an arc surface that mates with the outer circumferential surface of the work roll, and the axis of the mating surface is parallel to the axis of the work roll. An mounting groove and a reinforcing groove are provided on the mating surface, both extending linearly along the axis of the work roll. The reinforcing groove is located below the mounting groove. The mounting groove is used to install a roll wiper, and the reinforcing groove is used to improve the rigidity of the guide plate.

[0007] Preferably, the guide bracket includes a guide block, and the bearing seat of the work roller is provided with a guide groove, and the guide block is disposed in the guide groove.

[0008] Preferably, both the guide block and the guide groove extend in a vertical direction.

[0009] Preferably, the guide block includes a connecting portion and a snap-fit ​​portion arranged sequentially along the axis of the work roller. The connecting portion is connected to the end of the guide plate through the snap-fit ​​portion. The cross-sectional dimension of the connecting portion on the axis of the work roller is smaller than the cross-sectional dimension of the snap-fit ​​portion on the axis of the work roller. The guide groove is provided with a connecting cavity and a snap-fit ​​cavity. The connecting portion is disposed in the connecting cavity, and the snap-fit ​​portion is disposed in the snap-fit ​​cavity. The groove width of the connecting portion corresponds to the cross-sectional width of the connecting portion on the axis of the work roller, and the groove width of the snap-fit ​​portion corresponds to the cross-sectional width of the snap-fit ​​portion on the axis of the work roller.

[0010] Preferably, the guide block is provided with a first locking hole, the axis of the first locking hole is parallel to the axis of the work roller, the bottom of the guide groove is provided with an adjusting elongated hole, the extending direction of the adjusting elongated hole is consistent with the extending direction of the guide groove, and the first locking bolt passes through the adjusting elongated hole and is threadedly connected to the first locking hole.

[0011] Preferably, the top and bottom ends of the snap-fit ​​portion are provided with second locking holes, the two second locking holes are coaxially arranged, and the axial direction of the second locking holes is consistent with the extension direction of the guide block. The side wall of the snap-fit ​​cavity is provided with an adjustment hole, and the adjustment hole is provided in a one-to-one correspondence with the second locking hole. The second locking bolt passes through the adjustment hole and is threadedly connected to the corresponding second locking hole.

[0012] Preferably, a washer is fitted onto the second locking bolt.

[0013] Preferably, the guide support further includes a lifting hook, which is connected to the lifting device via a lifting rope.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model reduces the deformation of the guide assembly after use, improves the service life, thereby avoiding abnormal guide accuracy caused by guide deformation and the increase in procurement costs caused by guide deformation, effectively ensuring that the guide accuracy control is more in line with the needs of the rolling mill and reducing production costs. Attached Figure Description

[0015] Figure 1 This is a front view of the structure of the work roll guide suitable for finishing rolling in a thick plate rolling mill; Figure 2 This is a top view of the structure of the work roll guide suitable for finishing rolling in a thick plate rolling mill; Figure 3 This is a side view of the structure of the work roll guide suitable for finishing rolling in a thick plate rolling mill; Figure 4 This is a cross-sectional view of the work roll guide applicable to the finishing rolling of a thick plate mill.

[0016] The numbers in the image represent: 1-Guide plate; 2-Guide bracket; 11-Mating surface; 12-Mounting groove; 13-Reinforcing groove; 21-Connecting part; 22-Snap-fit ​​part; 23-First locking hole; 24-Second locking hole; 25-Lifting hook. Detailed Implementation

[0017] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings. Example 1

[0018] like Figures 1 to 4 As shown, Figure 1 This is a front view of the structure of the work roll guide suitable for finishing rolling in a thick plate rolling mill; Figure 2 This is a top view of the structure of the work roll guide suitable for finishing rolling in a thick plate rolling mill; Figure 3 This is a side view of the structure of the work roll guide suitable for finishing rolling in a thick plate rolling mill; Figure 4 This is a cross-sectional view of the work roll guide applicable to the finishing rolling of a thick plate mill.

[0019] The present invention relates to a work roll guide suitable for finishing rolling in a thick plate rolling mill, comprising a guide plate 1 and guide brackets 2. Two guide brackets 2 are symmetrically arranged on both sides of the guide plate 1, and the guide brackets 2 are connected to the bearing seats at both ends of the work roll one by one. The guide plate 1 extends linearly along the axis of the work roll. The guide plate 1 is provided with a mating surface 11, which is an arc surface that mates with the outer circumferential surface of the work roll, and the axis of the mating surface 11 is parallel to the axis of the work roll. The mating surface 11 is provided with an mounting groove 12 and a reinforcing groove 13, both of which extend linearly along the axis of the work roll. The reinforcing groove 13 is located below the mounting groove 12. The mounting groove 12 is used to install a roll cleaner to clean the roll surface of the work roll, and the reinforcing groove 13 is used to improve the rigidity of the guide plate 1.

[0020] Grooving or drilling at the center of the cross-section (in areas of low shear stress) creates a hollow cross-section, concentrating material at the periphery (in areas of high shear stress). If stress concentration occurs locally in the casting under load (such as at right angles or thick-walled transitions), plastic deformation will preferentially occur in that area, weakening the overall resistance to deformation. Grooving (such as process grooves or unloading grooves) can disperse stress, preventing premature local deformation and thus ensuring the overall stiffness.

[0021] For hollow tubes and solid rods of the same outer diameter, hollow tubes have a better torsional moment of inertia (Ip) (material is concentrated at the edges) and are lighter—which is why drive shafts often use hollow structures. In this invention, the guide plate 1 is a casting that cannot be completely hollow due to structural limitations. Therefore, a reinforcing groove 13 is provided below the mounting groove 12 as a reinforcing rib. This localized grooving removes ineffective material from the center, improving torsional stiffness, dispersing stress, reducing overall weight, and preventing premature local deformation after use. Furthermore, the reinforcing groove 13 on the casting also improves the casting's manufacturability, reducing hot spots and promoting uniform cooling.

[0022] This invention reduces the deformation of the guide after assembly and use, and improves its service life. This avoids abnormal guide accuracy caused by guide deformation and the increase in procurement costs caused by guide deformation, effectively ensuring that the guide accuracy control is more in line with the needs of the rolling mill and reducing production costs. Example 2

[0023] The guide bracket 2 includes a guide block. The bearing seat of the working roller is provided with a guide groove. The guide block is disposed in the guide groove. The relative position of the guide plate 1 and the working roller can be adjusted by moving the guide block in the guide groove to ensure the effective cooperation between the guide plate 1 and the working roller.

[0024] Preferably, both the guide block and the guide groove extend vertically, thereby allowing the relative height of the guide plate 1 and the work roll to be adjusted vertically to fine-tune their relative positions based on actual production needs, ensuring smooth guidance of the rolled piece.

[0025] The guide block includes a connecting part 21 and a snap-fit ​​part 22 arranged sequentially along the axis of the working roller. The connecting part 21 is connected to the end of the guide plate 1 through the snap-fit ​​part 22. The cross-sectional dimension of the connecting part 21 on the axis of the working roller is smaller than that of the snap-fit ​​part 22 on the axis of the working roller. Correspondingly, the guide groove is provided with a connecting cavity and a snap-fit ​​cavity. The connecting part 21 is disposed in the connecting cavity, and the snap-fit ​​part 22 is disposed in the snap-fit ​​cavity. The groove width of the connecting part 21 corresponds to the cross-sectional width of the connecting part 21 on the axis of the working roller, and the groove width of the snap-fit ​​part 22 corresponds to the cross-sectional width of the snap-fit ​​part 22 on the axis of the working roller. Thus, a boss is formed between the connecting part 21 and the snap-fit ​​part 22, and a boss is formed between the connecting cavity and the snap-fit ​​cavity for snap-fit ​​positioning, ensuring axial positional stability and ensuring the stability of the vertical adjustment movement of the guide block within the guide groove.

[0026] Preferably, the guide block is provided with a first locking hole 23, the axis of the first locking hole 23 is parallel to the axis of the work roller, and an adjusting elongated hole is provided through the bottom of the guide groove, the extending direction of the adjusting elongated hole is consistent with the extending direction of the guide groove, and a first locking bolt passes through the adjusting elongated hole and is threadedly connected to the first locking hole 23. In the untightened state, the first locking bolt moves in the adjusting elongated hole as the guide block moves in the guide groove. After being adjusted to a suitable position, the guide block is initially fixed in the guide groove by tightening the first locking bolt.

[0027] The top and bottom ends of the snap-fit ​​part 22 are provided with second locking holes 24. The two second locking holes 24 are coaxially arranged, and the axial direction of the second locking holes 24 is consistent with the extension direction of the guide block. An adjustment hole is provided through the side wall of the snap-fit ​​cavity. The adjustment hole is provided one-to-one with the second locking hole 24. The second locking bolt passes through the adjustment hole and is threadedly connected to the corresponding second locking hole 24. A washer is fitted on the second locking bolt. After the first locking bolt is used for initial positioning and fixing, the top and bottom of the guide block are connected and limited by the two second locking bolts respectively. By fitting a washer of appropriate thickness, the stability of the limit is ensured, thereby ensuring the fixed connection between the guide bracket 2 and the bearing seat.

[0028] Preferably, the guide bracket 2 further includes a lifting hook 25, which is connected to a lifting device via a lifting rope to install the guide device on or remove it from the roll bearing seat.

[0029] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A work roll guide suitable for finishing rolling in a thick plate rolling mill, characterized in that, The device includes a guide plate and guide brackets. Two guide brackets are symmetrically arranged on both sides of the guide plate, and each guide bracket is connected to a bearing seat at one end of the work roller. The guide plate extends linearly along the axis of the work roller. The guide plate has a mating surface, which is an arc surface that mates with the outer circumferential surface of the work roller. The axis of the mating surface is parallel to the axis of the work roller. The mating surface has an installation groove and a reinforcing groove, both of which extend linearly along the axis of the work roller. The reinforcing groove is located below the installation groove. The installation groove is used to install a wiping roller, and the reinforcing groove is used to improve the rigidity of the guide plate.

2. The work roll guide suitable for finishing rolling in a heavy plate rolling mill as described in claim 1, characterized in that, The guide bracket includes a guide block, and the bearing seat of the working roller is provided with a guide groove, and the guide block is disposed in the guide groove.

3. The work roll guide suitable for finishing rolling in a heavy plate rolling mill as described in claim 2, characterized in that, Both the guide block and the guide groove extend vertically.

4. The work roll guide suitable for finishing rolling in a heavy plate rolling mill as described in claim 3, characterized in that, The guide block includes a connecting part and a snap-fit ​​part arranged sequentially along the axis of the work roller. The connecting part is connected to the end of the guide plate through the snap-fit ​​part. The cross-sectional dimension of the connecting part on the axis of the work roller is smaller than that of the snap-fit ​​part on the axis of the work roller. The guide groove is provided with a connecting cavity and a snap-fit ​​cavity. The connecting part is disposed in the connecting cavity, and the snap-fit ​​part is disposed in the snap-fit ​​cavity. The groove width of the connecting part corresponds to the cross-sectional width of the connecting part on the axis of the work roller, and the groove width of the snap-fit ​​part corresponds to the cross-sectional width of the snap-fit ​​part on the axis of the work roller.

5. The work roll guide for finishing rolling in a heavy plate mill as described in claim 4, characterized in that, The guide block is provided with a first locking hole, the axis of the first locking hole is parallel to the axis of the working roller, and an adjustment elongated hole is provided through the bottom of the guide groove, the extension direction of the adjustment elongated hole is consistent with the extension direction of the guide groove, and a first locking bolt passes through the adjustment elongated hole and is threadedly connected to the first locking hole.

6. The work roll guide for finishing rolling in a heavy plate mill as described in claim 5, characterized in that, The top and bottom ends of the snap-fit ​​part are provided with second locking holes. The two second locking holes are coaxially arranged, and the axial direction of the second locking holes is consistent with the extension direction of the guide block. The side wall of the snap-fit ​​cavity is provided with an adjustment hole. The adjustment hole is provided in a one-to-one correspondence with the second locking hole. The second locking bolt passes through the adjustment hole and is threadedly connected to the corresponding second locking hole.

7. The work roll guide for finishing rolling in a heavy plate mill as described in claim 6, characterized in that, A washer is fitted onto the second locking bolt.

8. The work roll guide for finishing rolling in a heavy plate mill as described in claim 1, characterized in that, The guide support also includes a lifting hook, which is connected to the lifting device via a lifting rope.

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