CN113560341A - Roll assembly and rolling mill for rolling double-tooth crawler belt steel - Google Patents
Roll assembly and rolling mill for rolling double-tooth crawler belt steel Download PDFInfo
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- CN113560341A CN113560341A CN202110982610.6A CN202110982610A CN113560341A CN 113560341 A CN113560341 A CN 113560341A CN 202110982610 A CN202110982610 A CN 202110982610A CN 113560341 A CN113560341 A CN 113560341A
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- roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
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- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a roller assembly and a rolling mill for rolling double-tooth crawler belt steel, the roller assembly for rolling the double-tooth crawler belt steel comprises: the rolling device comprises an upper roller, a lower roller, a left roller and a right roller, wherein the left roller is provided with a left forming surface, the right roller is provided with a right forming surface, the upper roller is provided with an upper forming surface, the lower roller is provided with a lower forming surface, and the left forming surface, the right forming surface, the upper forming surface and the lower forming surface jointly enclose a rolling channel; the upper roller and the lower roller can respectively move along the up-down direction; the left roller and the right roller can move along the left and right directions respectively. The double-tooth track strip steel rolling device is suitable for double-tooth track strip steel with similar shapes but different sizes, can compensate on line when the cavity wall of a rolling channel is abraded, does not need to stop production and disassemble a roller, ensures the production efficiency, and saves the purchase cost of the roller.
Description
Technical Field
The invention belongs to the technical field of hot-rolled section steel, and particularly relates to a roller assembly and a rolling mill for rolling double-tooth crawler belt steel.
Background
The rolling process commonly adopted aiming at deformed steel at present is as follows: and finally rolling the rectangular billet or the square billet into the deformed steel with the target shape through a plurality of box-shaped holes, splitting holes, control holes and finished product holes. The caterpillar band steel is one of deformed steel, and the caterpillar band steel is commonly used for manufacturing caterpillar chain of engineering machinery such as excavators, bulldozers, caterpillar cranes, pavers and the like. The crawler belts are divided into single-tooth crawler belts, double-tooth crawler belts and three-tooth crawler belts according to the shape. Relatively speaking, the double-tooth crawler belt steel has higher crawler teeth, longer service life, better structural form and better ground gripping performance.
The caterpillar band steel is generally produced by hot rolling, the common process of the hot rolling caterpillar band steel comprises roughing mill cogging and finish rolling by a finishing mill group, and a rectangular blank is finally rolled into caterpillar band steel by rolling of a plurality of rolling mills. The roll component of the finishing mill group is usually two roll components, the double-tooth caterpillar band steel grouser is higher, when the two roll components are adopted for rolling, the pass rolling groove of the lower roll is deeper, the angular speed of the lower roll rotating at each part is the same, but the distance difference between the groove opening and the groove bottom of the pass rolling groove and the rotary axis of the roll is larger, so the linear speed at the groove opening is larger, the friction stroke between the roll at the groove opening and the grouser is longer, and the excessive abrasion of the roll at the groove opening is easily caused. In addition, the linear velocity of the roller at the notch is high, the worn roller easily causes the surface quality defects of wire drawing and rubbing marks at the root of the grouser, the yield is low, the roller is frequently required to be stopped and replaced in the rolling process for reducing the rubbing marks and the wire drawing, the cost is increased, and the production efficiency is influenced.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to solve the problems of low rolled piece quality and short roll service life of the roll component for rolling the double-tooth crawler steel in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: roll assembly for rolling a double-toothed crawler strip, comprising:
the rolling device comprises an upper roller, a lower roller, a left roller and a right roller, wherein the left roller is provided with a left forming surface, the right roller is provided with a right forming surface, the upper roller is provided with an upper forming surface, the lower roller is provided with a lower forming surface, and the left forming surface, the right forming surface, the upper forming surface and the lower forming surface jointly enclose a rolling channel so as to roll and form a workpiece to be rolled;
the upper roller can move along the up-down direction;
the left roller and the right roller can move along the left and right directions respectively.
Further, the lower roll is movable in an up-down direction.
Furthermore, the left roller further comprises a left transverse surface, the lower roller further comprises a first lower transverse surface, and when the lower roller is located at the upper end of the moving stroke, the first lower transverse surface supports the left transverse surface.
Further, the right roller further comprises a right transverse surface, the lower roller further comprises a second lower transverse surface, and when the lower roller is located at the upper end of the moving stroke, the second lower transverse surface supports the right transverse surface.
Further, the rolling channel includes a first grouser forming section, a second grouser forming section, a long grouser forming section, a web forming section, and a short grouser forming section.
Furthermore, the first grouser forming part is formed by a left forming surface and a lower forming surface in a surrounding mode.
Furthermore, the second grouser forming part is enclosed by a right forming surface and a lower forming surface.
Furthermore, the long tooth forming part is enclosed by an upper forming surface and a left forming surface.
Furthermore, the short tooth forming part is enclosed by an upper forming surface and a right forming surface.
A rolling mill comprising a frame and a roll assembly disposed on the frame, the roll assembly comprising:
the rolling device comprises an upper roller, a lower roller, a left roller and a right roller, wherein the left roller is provided with a left forming surface, the right roller is provided with a right forming surface, the upper roller is provided with an upper forming surface, the lower roller is provided with a lower forming surface, and the left forming surface, the right forming surface, the upper forming surface and the lower forming surface jointly enclose a rolling channel so as to roll and form a workpiece to be rolled;
the upper roller can move along the up-down direction;
the left roller and the right roller can move along the left and right directions respectively.
Further, the lower roll is movable in an up-down direction.
Furthermore, the left roller further comprises a left transverse surface, the lower roller further comprises a first lower transverse surface, and when the lower roller is located at the upper end of the moving stroke, the first lower transverse surface supports the left transverse surface.
Further, the right roller further comprises a right transverse surface, the lower roller further comprises a second lower transverse surface, and when the lower roller is located at the upper end of the moving stroke, the second lower transverse surface supports the right transverse surface.
Further, the rolling channel includes a first grouser forming section, a second grouser forming section, a long grouser forming section, a web forming section, and a short grouser forming section.
Furthermore, the first grouser forming part is formed by a left forming surface and a lower forming surface in a surrounding mode.
Furthermore, the second grouser forming part is enclosed by a right forming surface and a lower forming surface.
Furthermore, the long tooth forming part is enclosed by an upper forming surface and a left forming surface.
Furthermore, the short tooth forming part is enclosed by an upper forming surface and a right forming surface.
Compared with the closest prior art, the technical scheme provided by the invention has at least the following excellent effects:
1) the left roller and the right roller which can move left and right are adopted to process the double-tooth crawler belt steel, the thickness of the crawler teeth is convenient to adjust, the condition that the root parts of the crawler teeth are quickly abraded corresponding to the forming surfaces of the rollers due to the fact that the forming parts of the crawler teeth are deep is reduced, rubbing marks and wire drawing of the double-tooth crawler belt steel are reduced, the yield is improved, and the production efficiency is improved.
2) The double-tooth crawler belt steel rolling device is suitable for double-tooth crawler belt steel with similar shapes but different web plate thicknesses, crawler belt tooth thicknesses, long teeth and short tooth lengths, and can compensate on line when the cavity wall of a rolling channel of the double-tooth crawler belt steel is abraded without stopping production and disassembling a roller, so that the production efficiency is ensured, and the purchase cost of the roller is saved.
3) Can support left roll, right roll through the bottom roll, avoid left roll, right roll to remove downwards at rolling in-process to guarantee rolling quality.
3) The first grouser forming part is formed by a left forming surface and a lower forming surface in a surrounding mode, the left forming surface is less worn, and the service life of the roll component is prolonged.
4) The second grouser forming part is formed by surrounding a right forming surface and a lower forming surface, and the right forming surface is less worn, so that the service life of the roll component is prolonged.
5) The long tooth forming part is enclosed by an upper forming surface and a left forming surface, and the short tooth forming part is enclosed by an upper forming surface and a right forming surface, so that the shape of the forming part can be controlled conveniently.
Drawings
FIG. 1 is a schematic view of the construction of a roll assembly in an embodiment of the rolling mill of the present invention.
In the figure: 1. an upper roller; 2. a lower roller; 3. a left roller; 4. a right roller; 5. a web forming section; 6. a first grouser-forming section; 7. a second grouser forming section; 8. a long tooth forming part; 9. a short tooth forming part; 10. a first plane; 11. a second plane; 12. a third plane; 13. a fourth plane; 14. a second plane; 15. a first inclined plane; 16. a second inclined plane; 17. a left plane; 18. a left inclined plane; 19. a left curved surface; 20. a right plane; 21. a right inclined plane; 22. a right curved surface; 23. a first curved surface; 24. a second curved surface; 25. a sixth plane;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The specific embodiment of the rolling mill of the invention: the rolling mill comprises a frame and a roll assembly, the difference between the rolling mill and the rolling mill in the prior art is mainly the roll assembly, as shown in figure 1, the roll assembly of the present application is a roll assembly for rolling double-tooth track strip steel, and comprises an upper roll 1, a lower roll 2, a left roll 3 and a right roll 4, the upper roll 1 and the lower roll 2 are arranged in a vertical opposite manner, the left roll 3 and the right roll 4 are arranged in a horizontal opposite manner, and the upper roll 1 and the lower roll 2 can move in the vertical direction respectively; the left roll 3 and the right roll 4 are movable in the left-right direction, respectively.
The upper roller 1 is provided with an upper forming surface, the lower roller 2 is provided with a lower forming surface, the left roller 3 is provided with a left forming surface, the right roller 4 is provided with a right forming surface, and the left forming surface, the right forming surface, the upper forming surface and the lower forming surface jointly enclose a rolling channel of the double-tooth track strip steel so as to roll and form a workpiece to be rolled.
The upper roll 1 is provided with a first curved surface 23, a second curved surface 24 and a sixth flat surface 25, and the first curved surface 23, the second curved surface 24 and the sixth flat surface 25 constitute an upper molding surface.
The lower roll 2 is provided with a first plane 10, a fifth plane 14 and a lower forming plane comprising a second plane 11, a third plane 12, a fourth plane 13, a first bevel 15 and a second bevel 16.
The left roller 3 is provided with a left plane 17, a left inclined plane 18 and a left curved surface 19, and the left inclined plane 18 and the left curved surface 19 form a left forming surface.
The right roller 4 is provided with a right plane 20, a right inclined plane 21 and a right curved plane 22, and the right inclined plane 21 and the right curved plane 22 form a right forming surface. The rolling channel comprises a first grouser forming section 6, a second grouser forming section 7, a long grouser forming section 8, a short grouser forming section 9 and a web forming section 5.
The first grouser forming part 6 is defined by a left forming surface and a lower forming surface, and in particular, is defined by a second plane 11, a first inclined surface 15 and a left first inclined surface 18.
The second grouser forming part 7 is surrounded by a right forming surface and a lower forming surface, and specifically, by a fourth plane 13, a second inclined surface 16 and a right first inclined surface 21.
The long tooth forming part 8 is formed by an upper forming surface and a left forming surface, in particular, a first curved surface 23 and a left first curved surface 19.
The short tooth forming part 9 is formed by an upper forming surface and a right forming surface, in particular, a second curved surface 24 and a right first curved surface 22.
The lower roller 2 and the left roller 3 have a gap in the horizontal direction, the lower roller 2 and the right roller 4 have a gap in the horizontal direction, the upper roller 1 and the left roller 3 have a gap in the horizontal direction, and the upper roller 1 and the right roller 3 have a gap in the horizontal direction. The arrangement can reduce the abrasion of the roll assembly and reduce the resistance during rolling.
When the lower roller 2 is positioned at the upper end of the moving stroke, the first plane 10 supports the left plane 17 to reduce downward movement of the left roller 3 caused by stress in the rolling process, and the fifth plane 14 supports the right plane 20 to reduce downward movement of the right roller 4 caused by stress in the rolling process. The first plane 10 constitutes a first lower transverse plane, the fifth plane 14 constitutes a second lower transverse plane, the left plane 17 constitutes a left transverse plane and the right plane 20 constitutes a right transverse plane.
The sizes of the long teeth, the short teeth, the web plate, the first grouser and the second grouser of the double-tooth grouser are controlled by the movement of the upper roller 1, the lower roller 2, the left roller 3 and the right roller 4: keeping the lower roll 2 stationary, the upper roll 1 is moved upwards to increase the thickness of the web and moved downwards to decrease the thickness of the web. The left roll 3 is moved leftward to increase the thickness of the first grouser and the length of the long teeth, and moved rightward to decrease the thickness of the first grouser and the length of the long teeth. The right roll 4 moving to the right increases the thickness of the second grouser and the length of the short teeth, and moving to the left decreases the thickness of the second grouser and the length of the short teeth.
The specific embodiment of the roll assembly for rolling the double-tooth track strip steel of the invention is the same as the structure of the roll assembly in the specific embodiment of the rolling mill, and the detailed description is omitted.
In conclusion, compared with the prior art, the roll assembly and the rolling mill for rolling the double-tooth crawler belt steel have the following technical effects:
1) the left roller and the right roller which can move left and right are adopted to process the double-tooth crawler belt steel, the thickness of the crawler teeth is convenient to adjust, the condition that the root parts of the crawler teeth are quickly abraded corresponding to the forming surfaces of the rollers due to the fact that the forming parts of the crawler teeth are deep is reduced, rubbing marks and wire drawing of the double-tooth crawler belt steel are reduced, the yield is improved, and the production efficiency is improved.
2) The double-tooth crawler belt steel rolling device is suitable for double-tooth crawler belt steel with similar shapes but different web plate thicknesses, crawler belt tooth thicknesses, long teeth and short tooth lengths, and can compensate on line when the cavity wall of a rolling channel of the double-tooth crawler belt steel is abraded without stopping production and disassembling a roller, so that the production efficiency is ensured, and the purchase cost of the roller is saved.
3) Can support left roll, right roll through the bottom roll, avoid left roll, right roll to remove downwards at rolling in-process to guarantee rolling quality.
3) The first grouser forming part is formed by a left forming surface and a lower forming surface in a surrounding mode, the left forming surface is less worn, and the service life of the roll component is prolonged.
4) The second grouser forming part is formed by surrounding a right forming surface and a lower forming surface, and the right forming surface is less worn, so that the service life of the roll component is prolonged.
5) The long tooth forming part is enclosed by an upper forming surface and a left forming surface, and the short tooth forming part is enclosed by an upper forming surface and a right forming surface, so that the shape of the forming part can be controlled conveniently.
The invention is not to be considered as limited to the particular embodiments shown, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. Roll assembly for rolling a double-toothed crawler strip, characterized by comprising:
the rolling device comprises an upper roller, a lower roller, a left roller and a right roller, wherein the left roller is provided with a left forming surface, the right roller is provided with a right forming surface, the upper roller is provided with an upper forming surface, the lower roller is provided with a lower forming surface, and the left forming surface, the right forming surface, the upper forming surface and the lower forming surface jointly enclose a rolling channel so as to roll and form a workpiece to be rolled;
the upper roller can move along the up-down direction;
the left roller and the right roller can move along the left and right directions respectively.
2. A roll assembly for rolling a double-toothed crawler strip according to claim 1, wherein the lower roll is movable in an up-down direction.
3. A roll assembly for rolling a double track strip as claimed in claim 2 wherein the left roll further comprises a left cross surface and the lower roll further comprises a first lower cross surface, the first lower cross surface supporting the left cross surface when the lower roll is at the upper end of the travel.
4. A roll assembly for rolling a double-toothed track strip as claimed in claim 2 wherein the right roll further comprises a right transverse surface and the lower roll further comprises a second lower transverse surface, the second lower transverse surface supporting the right transverse surface when the lower roll is at the upper end of the travel.
5. A roll assembly for rolling a dual-toothed crawler strip according to claim 1, wherein the rolling channel comprises a first grouser profile, a second grouser profile, a long-tine profile, a web profile and a short-tine profile.
6. A roll assembly for rolling a double toothed crawler strip according to claim 5, wherein the first grouser forming section is enclosed by a left forming surface and a lower forming surface.
7. A roll assembly for rolling a double toothed crawler strip according to claim 5, wherein the second grouser forming section is enclosed by a right forming surface and a lower forming surface.
8. A roll assembly for rolling a double toothed track strip according to claim 5, wherein the long tooth forming portion is enclosed by an upper forming surface and a left forming surface.
9. A roll assembly for rolling a double toothed track strip according to claim 5, wherein the short tooth forming portion is enclosed by an upper forming surface and a right forming surface.
10. A rolling mill comprising a frame and a roll assembly disposed on the frame, the roll assembly being as claimed in any one of claims 1 to 9 for rolling a double-tooth track strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110982610.6A CN113560341A (en) | 2021-08-25 | 2021-08-25 | Roll assembly and rolling mill for rolling double-tooth crawler belt steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110982610.6A CN113560341A (en) | 2021-08-25 | 2021-08-25 | Roll assembly and rolling mill for rolling double-tooth crawler belt steel |
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| Publication Number | Publication Date |
|---|---|
| CN113560341A true CN113560341A (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110982610.6A Pending CN113560341A (en) | 2021-08-25 | 2021-08-25 | Roll assembly and rolling mill for rolling double-tooth crawler belt steel |
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| CN (1) | CN113560341A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115007641A (en) * | 2022-07-26 | 2022-09-06 | 山东钢铁股份有限公司 | Single-tooth track shoe cogging hole pattern and hot rolling method |
| WO2022227375A1 (en) * | 2021-04-25 | 2022-11-03 | 山东钢铁股份有限公司 | Roll assembly for rolling special-shaped steel and a rolling mill train |
-
2021
- 2021-08-25 CN CN202110982610.6A patent/CN113560341A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022227375A1 (en) * | 2021-04-25 | 2022-11-03 | 山东钢铁股份有限公司 | Roll assembly for rolling special-shaped steel and a rolling mill train |
| CN115007641A (en) * | 2022-07-26 | 2022-09-06 | 山东钢铁股份有限公司 | Single-tooth track shoe cogging hole pattern and hot rolling method |
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