Rolling mill working roll mounting structure capable of preventing roll burning and working roll structure
By setting a cylindrical extension on the work roll of the rolling mill and embedding a U-shaped limiting groove on the baffle, the problem of excessive temperature at the end of the work roll is solved, resulting in a longer service life and reduced cooling requirements.
Patent Information
- Application Number
- CN202510992004.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-11-04
AI Technical Summary
The frictional connection between the neck end of the work roll in a traditional rolling mill and the top plate causes excessive temperature, resulting in damage, shortened service life, and the need for frequent cooling.
The mill work roll mounting structure with anti-burning rolls improves the fixing strength by connecting a cylindrical extension to the axial end face of the work roll and setting a U-shaped limiting groove on the baffle.
It effectively prevents the working roller end from overheating and wearing, extends its service life to 6-8 months, and reduces the need for frequent cooling.
Smart Images
Figure CN120885559A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of rolling manufacturing, in particular to a working roll mounting structure of a rolling mill. BACKGROUND
[0002] The two end portions of the working roll of the conventional rolling mill are in friction with the top plate, and the roll neck end portion of the working roll is in abutment with the top plate. When there is a gap between the working roll and the top plate, a gasket is embedded between the working roll and the top plate to ensure the fixation of the axial end face of the working roll. This abutment and friction connection mode of the axial end face of the roll neck of the working roll causes the temperature of the end portion of the working roll to be too high, resulting in damage and reducing the service life of the working roll from the original 6 months to 1 month. In addition, the temperature of the end portion of the working roll is too high during operation, and oil cooling is required. SUMMARY
[0003] In view of the problems in the prior art, the present application provides a rolling mill working roll mounting structure and working roll structure for preventing the working roll from burning, to solve at least one of the above technical problems.
[0004] In order to achieve the above-mentioned purpose, the present application provides a rolling mill working roll mounting structure for preventing the working roll from burning, comprising a working roll and a baffle mounted at both ends of the working roll, characterized in that the working roll comprises a main roll body, and a cylindrical extension is connected to both ends of the main roll body in the axial direction, and the outer diameter of the extension is smaller than the outer diameter of the main roll body.
[0005] A U-shaped limiting groove for embedding the end portion of the working roll is formed in the top center of the baffle, the extension is embedded in the U-shaped limiting groove, and the axial end face of the main roll body is limited by the baffle.
[0006] The present application limits the axial end face of the conventional working roll and improves the limiting of the axial end face of the main roll body, thereby greatly improving the strength of the limiting portion. At the same time, the extension is fixed by embedding in the U-shaped limiting groove, thereby improving the fixing effect.
[0007] Further preferably, the axial length of the main roll body matches the gap between the two baffles.
[0008] Further preferably, the distance between the two baffles is 226 mm.
[0009] The axial length of the main roll shaft is 226 mm.
[0010] Further preferably, the axial length of the U-shaped limiting groove is greater than the axial length of the extension.
[0011] Further preferably, the axial length of the U-shaped limiting groove is 14 mm.
[0012] The axial length of the extension is 12 mm.
[0013] Further preferably, the U-shaped limiting groove comprises a rectangular notch and a semicircular notch arranged in sequence, and the inner diameter of the semicircular notch is larger than the outer diameter of the extension.
[0014] Further preferably, the inner diameter of the semicircular notch is 5.6mm;
[0015] The transverse width of the rectangular notch is 5.6mm;
[0016] The outer diameter of the extension is 5mm.
[0017] The working roll structure comprises a main roll body, and cylindrical extensions are connected to both ends of the main roll body in the axial direction, and the outer diameter of the extension is smaller than the outer diameter of the main roll body.
[0018] Further preferably, the axial length of the main roll body matches the spacing between the baffle plates of a thirty-roll mill.
[0019] Further preferably, the extension is used to embed the U-shaped limiting groove provided on the baffle plate.
[0020] Further preferably, the axial length of the main roll shaft is 226mm, and the outer diameter of the main roll body is 9mm;
[0021] The axial length of the extension is 12mm, and the outer diameter of the extension is 5mm.
[0022] Compared with the prior art, the working roll structure has the following beneficial effects:
[0023] The contact mode of the baffle plate and the working roll is changed from the traditional top-punching type to the inlaid type.
[0024] The working roll does not run on the worn top head. The end of the working roll does not heat up and does not wear out. The service life of the working roll is prolonged. The service life is increased to 6-8 months per root. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of the baffle plate of embodiment 1.
[0026] Figure 2 It is a structural schematic diagram of the working roll of embodiment 1.
[0027] Figure 3 It is a schematic diagram of the mounting structure of embodiment 1.
[0028] Figure 4 It is a structural schematic diagram of the traditional working roll.
[0029] Figure 5 It is a structural diagram of the traditional working roll in the mounted state.
[0030] Figure 6 Figure 1 is a schematic diagram of the end wear of a conventional work roll. DETAILED DESCRIPTION
[0031] The application will be further described below with reference to the drawings.
[0032] Referring to Figures 1 to 3 Specific embodiment 1: a mill work roll mounting structure for preventing burning of the roll, comprising a work roll and a baffle plate 6 mounted at both ends of the work roll, the work roll comprising a main roll body 1, both ends of the main roll body 1 in the axial direction being connected with a cylindrical extension 2, the outer diameter of the extension 2 being smaller than the outer diameter of the main roll body 1; the baffle plate 6 being provided with a U-shaped limiting groove 61 for embedding the end of the work roll, the extension 2 being embedded in the U-shaped limiting groove 61, and the axial end face of the main roll body 1 being limited by the baffle plate 6. The application limits the position by the axial end face of the conventional work roll, and improves the position by the axial end face of the main roll body 1, greatly improving the strength of the limiting position. At the same time, the extension 2 is embedded and fixed by the U-shaped limiting groove 61, improving the fixing effect.
[0033] The axial length of the main roll body 1 matches the gap between the two baffle plates 6.
[0034] The distance between the two baffle plates 6 is 226 mm; the axial length of the main roll shaft is 226 mm.
[0035] The axial length of the U-shaped limiting groove 61 is greater than the axial length of the extension 2.
[0036] The axial length of the U-shaped limiting groove 61 is 14 mm; the axial length of the extension 2 is 12 mm. The U-shaped limiting groove 61 comprises a rectangular notch and a semicircular notch arranged above and below, and the inner diameter of the semicircular notch is greater than the outer diameter of the extension 2.
[0037] The inner diameter of the semicircular notch is 5.6 mm; the transverse width of the rectangular notch is 5.6 mm; and the outer diameter of the extension 2 is 5 mm.
[0038] The work roll structure comprises a main roll body 1, both ends of the main roll body 1 in the axial direction being connected with a cylindrical extension 2, the outer diameter of the extension 2 being smaller than the outer diameter of the main roll body 1. The axial length of the main roll body 1 matches the distance between the baffle plates 6 of the thirty-roll mill. The extension is used to embed the U-shaped limiting groove 61 provided on the baffle plate 6. The axial length of the main roll shaft is 226 mm, and the outer diameter of the main roll body 1 is 9 mm. The axial length of the extension 2 is 12 mm, and the outer diameter of the extension 2 is 5 mm.
[0039] Referring to Figures 4 to 6, the traditional working roller structure, the main roller body 1 is connected with the gradual change part 4 and the cylindrical extension part 5 at both ends. The axial length of the main roller body 1 is 200 cm, and the outer diameter is 8.5 mm. The axial length of the gradual change part 4 is 9 mm, and the axial length of the cylindrical extension part 5 is 10 mm, and the outer diameter is 8 mm. The axial end face of the roll neck of the traditional working roller is connected in a frictional abutting mode, and the temperature of the end part of the working roller is too high, causing damage. See Figure 6 .
[0040] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be made, which should be considered as the protection scope of the present application.
Claims
1. A mill work roll mounting structure for preventing burning of a roll, comprising a work roll and a shield plate mounted at both ends of the work roll, characterized in that, The working roller includes a main roller body, and cylindrical extensions are connected to both ends of the main roller body in the axial direction. The outer diameter of the extensions is smaller than the outer diameter of the main roller body. The baffle has a U-shaped limiting groove at the top center that is embedded in the end of the working roller. The extension is embedded in the U-shaped limiting groove, and the axial end face of the main roller is limited by the baffle.
2. A mill working roll mounting structure for preventing burning of a roll according to claim 1, characterized in that: The axial length of the main roller is matched with the gap between the two baffles.
3. A mill working roll mounting structure for preventing burning of a roll according to claim 1, characterized in that: The distance between the two baffles is 226mm; The axial length of the main roller is 226 mm.
4. A mill working roll mounting structure for preventing burning of a roll according to claim 1, characterized in that: The axial length of the U-shaped limiting groove is greater than the axial length of the extension.
5. A mill working roll mounting structure for preventing burning of a roll according to claim 1, characterized in that: The axial length of the U-shaped limiting groove is 14mm; The axial length of the extension is 12 mm.
6. The mill work roll mounting structure for an anti-burning roll according to claim 1, characterized in that: The U-shaped limiting groove includes a rectangular notch and a semi-circular notch arranged at the top and bottom, and the inner diameter of the semi-circular notch is larger than the outer diameter of the extension.
7. The mill work roll mounting structure for an anti-burning roll according to claim 6, characterized in that: The inner diameter of the semi-circular notch is 5.6 mm; The horizontal width of the rectangular notch is 5.6 mm; The outer diameter of the extension is 5 mm.
8. A work roll structure, including a main roll body, wherein cylindrical extensions are connected to both ends of the main roll body in the axial direction, and the outer diameter of the extensions is smaller than the outer diameter of the main roll body.
9. The working roll structure according to claim 8, characterized in that: The axial length of the main roll body is matched with the spacing between the baffles of the thirty-roll mill.
10. The working roll structure according to claim 9, characterized in that: The extension is used to embed into the U-shaped limiting groove provided on the baffle; The axial length of the main roller shaft is 226 mm, and the outer diameter of the main roller body is 9 mm. The axial length of the extension is 12mm, and the outer diameter of the extension is 5mm.