CN220160917U - Roller mounting structure of heavy and medium plate mill - Google Patents
Roller mounting structure of heavy and medium plate mill Download PDFInfo
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- CN220160917U CN220160917U CN202320687713.4U CN202320687713U CN220160917U CN 220160917 U CN220160917 U CN 220160917U CN 202320687713 U CN202320687713 U CN 202320687713U CN 220160917 U CN220160917 U CN 220160917U
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- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model discloses a medium plate mill roller mounting structure which comprises a mill stand, a support roller and a working roller. The two ends of the working roll are respectively and rotatably connected with a working roll bearing seat which is fixedly arranged on the rolling mill stand. A supporting roller is respectively arranged above the upper working roller and below the lower working roller in parallel, and the roller surfaces of the two supporting rollers are respectively connected with the roller surface of the upper working roller and the lower working rollerThe roller surfaces are attached. The horizontal length of the working roll surface is l 1 The method comprises the steps of carrying out a first treatment on the surface of the The length of the roller surface of the supporting roller is l 2 ；l 1 ＞l 2 . The left end and the right end of the roller surface of the support roller are respectively provided with a support roller chamfer, and the length of the chamfer along the axial direction of the support roller is l 3 ； 1 1 0 l 2 ≤l 3 ≤ 1 1 0 l 1 . The utility model can improve the mounting structure between the support roller and the working roller on the basis of ensuring that the support strength of the support roller is unchanged, and ensures that the stress born by the support roller is not concentrated at the end part position.
Description
Technical Field
The utility model relates to a heavy and medium plate rolling mill device, in particular to a heavy and medium plate rolling mill roller mounting structure.
Background
A plate mill is an apparatus capable of realizing rolling work of a single metal plate by a large pressure. The plate rolling mill may be classified into a middle and heavy plate rolling mill according to the thickness of the plate. The heavy and medium plate mill is a rolling apparatus for rolling a medium thickness steel plate, and the thickness of the produced steel plate is usually more than 6 mm.
When the heavy and medium plate mill performs rolling work, the thickness of the rolled plate is larger, the width is longer, the acting force born by the working rolls is correspondingly increased, and the roll breakage phenomenon can be caused if only a working structure with double working rolls is adopted. In order to solve the problem, in general, two support rollers are respectively disposed on the upper and lower sides of two working rollers in parallel to provide stable support for the working rollers, so as to ensure normal rolling operation of the working rollers. However, in actual production, as the number of medium plate materials with high thickness is increased, the end part of the supporting roller is stressed more and the phenomena of pit and peeling of the end part and the like are more likely to occur, so that the service life of the supporting roller is seriously influenced and the normal production of a rolling line is restricted.
What is needed is a roller mounting structure for a heavy and medium plate mill, which can improve the mounting structure between a support roller and a working roller on the basis of ensuring that the support strength of the support roller is unchanged, ensures that the stress born by the support roller is not concentrated at the end part position, and is easy to realize.
Disclosure of Invention
The utility model aims to solve the technical problems of the prior art, and provides a roller mounting structure of a heavy and medium plate mill, which can improve the mounting structure between a support roller and a working roller on the basis of ensuring the unchanged support strength of the support roller, ensures that the stress born by the support roller is not concentrated at the end part position, and is easy to realize.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a medium plate mill roller mounting structure comprises a mill stand, a support roller and a working roller.
The working rolls comprise an upper working roll and a lower working roll which are arranged in parallel and positioned in the same vertical plane.
The two ends of the working roll are respectively and rotatably connected with a working roll bearing seat which is fixedly arranged on the rolling mill stand.
And a supporting roller is respectively arranged above the upper working roller and below the lower working roller in parallel, and the roller surfaces of the two supporting rollers are respectively attached to the roller surfaces of the upper working roller and the lower working roller.
The left end and the right end of the supporting roller are respectively provided with a supporting roller bearing seat which is fixedly connected with the rolling mill frame;
the horizontal length of the working roll surface is l 1 The method comprises the steps of carrying out a first treatment on the surface of the The length of the roller surface of the supporting roller is l 2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein: l (L) 1 ＞l 2 。
The left end and the right end of the roller surface of the support roller are respectively provided with a support roller chamfer, and the length of the chamfer along the axial direction of the support roller is l 3 The method comprises the steps of carrying out a first treatment on the surface of the Wherein:
the horizontal length l of the roller surface of the working roller 1 ≥1.03l 2 。
The chamfering depth of the support roller is h; wherein:
a round angle is formed between the support roller chamfer and the end part of the roller surface of the support roller, and the radius of the round angle is r; wherein: r=10mm.
The roller shape of the supporting roller is a convex roller.
The supporting roller bearing seat adopts an oil film bearing.
The material of the supporting roller is forged steel, and the material of the working roller is infinite chilled cast iron.
The utility model has the following beneficial effects:
1. according to the utility model, in order to prevent the condition that the length of the working roll is larger than that of the supporting roll and the stress born by the end face of the working roll is larger, the end face of the supporting roll is provided with the chamfer with proper length and depth, the condition that the chamfer at the edge part is nearer to the width of the plate surface is avoided, the design that the original roll shape of the supporting roll is a flat roll is changed, and the stress born by the supporting roll is far from the end part, so that the normal use work of the supporting roll and the working roll is ensured.
Drawings
FIG. 1 is a schematic view of a structure of a roll installation structure of a heavy and medium plate mill according to the present utility model.
Fig. 2 shows a schematic front view of fig. 1.
FIG. 3 shows a schematic diagram of the structure of the top and bottom plates according to the present utility model.
Fig. 4 shows a partial schematic view of the backup roll chamfer in the present utility model.
The method comprises the following steps:
10. a rolling mill stand;
20. a support roller; 21. a back-up roll surface; 22. chamfering the support roller; 23. round corners; 24. a backup roll bearing block;
30. a work roll; 31. a work roll surface; 32. an upper work roll; 33. a lower work roll; 34. and a working roll bearing seat.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present utility model, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present utility model. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present utility model.
As shown in fig. 1, a heavy and medium plate mill roll mounting structure includes a mill stand 10, a backup roll 20, and a work roll 30.
The working rolls comprise an upper working roll 32 and a lower working roll 33, the upper working roll and the lower working roll are arranged in parallel and positioned in the same vertical plane, and the working rolls are mainly used for direct rolling work of the medium-thickness plates. A work roll bearing block 34 is rotatably connected to each end of each work roll, and is fixedly mounted on the roll stand. The rolling mill stands can clamp the front end face and the rear end face of the working roll bearing seat, so that the working roll bearing seat is vertically arranged between the rolling mill stands. In this embodiment, the material of the supporting roller is forged steel, and the material of the working roller is infinite chilled cast iron.
Because the thickness of the plate rolled by the heavy and medium plate mill is thicker, if only a working structure with double working rolls is adopted, the working area of the working rolls is stressed greatly, thereby leading to the occurrence of roll breakage. Therefore, a supporting roller is respectively and parallelly arranged above the upper working roller and below the lower working roller, and the roller surfaces of the two supporting rollers are respectively attached to the roller surfaces of the upper working roller and the lower working roller. The diameter of the support roller is far larger than that of the working roller, and the support roller can provide a good support effect for the working roller through close fit between roller surfaces, so that the thickness range of the plate which can be rolled by the working roller is larger. The left and right ends of the backup roll are respectively provided with a backup roll bearing seat 24 which is fixedly connected with the rolling mill frame. The backup roll bearing housing preferably employs oil film bearings.
The two ends of the supporting roller and the working roller are both connecting sections matched with the bearing seats, and in actual work, the roller surface of the area between the rolling mill frames at the two sides is the main working part. In the present embodiment, the horizontal length of the work roll surface 31 of the work roll is l 1 The length of the back-up roll surface 21 is l 2 Wherein: l (L) 1 ＞l 2 I.e. the effective working area of the work roll is larger than the area where the backup roll provides support for the work roll. Under the condition, as the number of the medium plate materials with high thickness is increased, the end part of the roller surface of the supporting roller is clung to the roller surface of the working roller, the larger the force conducted by the working roller is, the more easily the end part of the roller surface of the supporting roller is dimpled, peeled off and other phenomena, the service life of the supporting roller is seriously influenced, and the normal production of a rolling line is restricted. The relationship between the horizontal length of the work roll surface and the length of the backup roll surface in this embodiment is preferably l 1 ≥1.03l 2 Is a ratio of (2).
In order to prevent the situation that the stress born by the end face of the working roll is larger, a supporting roll chamfer 22 with a certain length and depth is arranged at the end face of the supporting roll, and the situation that the end chamfer of the supporting roll is closer to the width of the plate surface and the optimization of the whole installation structure is smaller is avoided. Wherein, the left end and the right end of the roller surfaces of the two support rollers are respectively provided with a support roller chamfer, so that the length of the chamfer along the center direction of the support roller is l 3 The method comprises the steps of carrying out a first treatment on the surface of the It should satisfy:the chamfering depth of the support roller is set to be h; it should satisfy: />On the basis of ensuring that the supporting strength of the supporting roller is unchangedThe mounting structure between the support roller and the work roller is improved. Meanwhile, a round angle 23 is preferably formed between the support roller chamfer and the end part of the roller surface of the support roller, and the radius of the round angle is r; wherein the preferred dimensions of the fillet radius are: r=10mm.
In order to better keep away from the end part of the stress borne by the support roller, the design that the original support roller is a flat roller is changed in the embodiment, the roller shape of the support roller is adjusted to be a convex roller, and the maximum protruding distance is 0.1mm, so that the normal use work of the support roller and the work roller is ensured.
The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the equivalent changes belong to the protection scope of the present utility model.
Claims (5)
1. The utility model provides a heavy and medium plate mill roller mounting structure which characterized in that: comprises a rolling mill stand, a supporting roller and a working roller;
the working rolls comprise an upper working roll and a lower working roll, and the upper working roll and the lower working roll are arranged in parallel and positioned in the same vertical plane;
the two ends of the working roll are respectively and rotatably connected with a working roll bearing seat which is fixedly arranged on the rolling mill stand;
a supporting roller is respectively arranged above the upper working roller and below the lower working roller in parallel, and the roller surfaces of the two supporting rollers are respectively attached to the roller surfaces of the upper working roller and the lower working roller;
the left end and the right end of the supporting roller are respectively provided with a supporting roller bearing seat which is fixedly connected with the rolling mill frame;
the horizontal length of the working roll surface is l 1 The method comprises the steps of carrying out a first treatment on the surface of the The length of the roller surface of the supporting roller is l 2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein: l (L) 1 >l 2 ；
The left end and the right end of the roller surface of the support roller are respectively provided with a support roller chamfer, and the length of the chamfer along the axial direction of the support roller is l 3 The method comprises the steps of carrying out a first treatment on the surface of the Wherein:
2. the heavy and medium plate mill roll mounting structure according to claim 1, wherein: the horizontal length l of the roller surface of the working roller 1 ≥1.03l 2 ；
The chamfering depth of the support roller is h; wherein:
3. the heavy and medium plate mill roll mounting structure according to claim 1, wherein: a round angle is formed between the support roller chamfer and the end part of the roller surface of the support roller, and the radius of the round angle is r; wherein: r=10mm.
4. The heavy and medium plate mill roll mounting structure according to claim 1, wherein: the roller shape of the supporting roller is a convex roller, and the protruding maximum distance is 0.1mm;
the supporting roller bearing seat adopts an oil film bearing.
5. The heavy and medium plate mill roll mounting structure according to claim 1, wherein: the material of the supporting roller is forged steel, and the material of the working roller is infinite chilled cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320687713.4U CN220160917U (en) | 2023-03-31 | 2023-03-31 | Roller mounting structure of heavy and medium plate mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320687713.4U CN220160917U (en) | 2023-03-31 | 2023-03-31 | Roller mounting structure of heavy and medium plate mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220160917U true CN220160917U (en) | 2023-12-12 |
Family
ID=89061047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320687713.4U Active CN220160917U (en) | 2023-03-31 | 2023-03-31 | Roller mounting structure of heavy and medium plate mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220160917U (en) |
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2023
- 2023-03-31 CN CN202320687713.4U patent/CN220160917U/en active Active
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