CN220426689U - Rolling bearing cantilever roll collar rolling mill - Google Patents
Rolling bearing cantilever roll collar rolling mill Download PDFInfo
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- CN220426689U CN220426689U CN202322331568.9U CN202322331568U CN220426689U CN 220426689 U CN220426689 U CN 220426689U CN 202322331568 U CN202322331568 U CN 202322331568U CN 220426689 U CN220426689 U CN 220426689U
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- 238000005096 rolling process Methods 0.000 title claims abstract description 125
- 238000009434 installation Methods 0.000 claims abstract description 42
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a rolling bearing cantilever roll collar rolling mill, which comprises a roll box, wherein two roll shafts are symmetrically arranged in the roll box, and a first eccentric sleeve and a second eccentric sleeve are respectively arranged on the outer sides of the roll shafts; a first-stage installation groove is formed in one end, close to the roller box, of the inner side wall of the first eccentric sleeve, a plurality of large-end rolling bearings are arranged in the first-stage installation groove, and the large-end rolling bearings are installed between the roller shaft and the opposite surface of the first-stage installation groove through a first axial fitting; a second-stage installation groove is formed in one end, close to the roller box, of the inner side wall of the second eccentric sleeve, a plurality of small-end rolling bearings are arranged in the second-stage installation groove, and the small-end rolling bearings are arranged between the roller shaft and the opposite surface of the second-stage installation groove through a second axial fitting; through improving former oil film bearing into antifriction bearing for the roller does not receive low rotational speed restriction when loading operation, only receives high rotational speed restriction, is applicable to the steady operation under the big load loading condition of low-speed.
Description
Technical Field
The utility model relates to a rolling bearing cantilever roll collar rolling mill, and belongs to the technical field of steel rolling equipment in the metallurgical industry.
Background
The radial force of a roll shaft of the traditional cantilever type roll collar rolling mill is borne by an oil film bearing, as disclosed in the prior publication No. CN212597927U, a roll collar type cantilever roll box and a rolling mill assembly with the roll box are arranged according to a rolling process, the rolling speed of the rolling mill is 1.75 m/s, the rotating speed of the roll shaft is 88.5 revolutions per minute, the rotating speed is lower, and the oil film bearing lubrication system of the cantilever type roll collar rolling mill is of a non-fully-sealed structure, so that oil pressure is difficult to maintain in the low-speed rotation process, oil film bearing burnout is caused by forced use, and the traditional cantilever type roll collar rolling mill is suitable for being used under the high-speed and high-load loading condition and cannot stably run under the low-speed and high-load loading condition.
Disclosure of Invention
Accordingly, an object of the present utility model is to provide a rolling bearing cantilever rolling mill, which solves the technical problems mentioned in the prior art.
The rolling bearing cantilever roll collar rolling mill comprises a roll box, a front side plate and a rear side plate are respectively arranged at two ends of the roll box, two roll shafts are symmetrically arranged in the roll box, the front ends of the two roll shafts respectively extend to the outer part of the front side plate and are sleeved with rolls, a taper sleeve is sleeved at the top of each roll shaft, the part, close to the bottom end, of each taper sleeve is positioned in each roll and is tightly attached to the inner side wall of each roll, a rolling ball bearing is arranged at the outer part, extending to the rear side plate, of each roll shaft, and a first eccentric sleeve and a second eccentric sleeve are respectively arranged at the outer sides of the roll shafts;
the outer side wall of the first eccentric sleeve is arranged on the inner side wall of the front side plate, one end, close to the roller box, of the inner side wall of the first eccentric sleeve is provided with a first-stage arrangement groove, a plurality of large-end rolling bearings are arranged in the first-stage arrangement groove, and the large-end rolling bearings are arranged between the opposite surfaces of the roller shaft and the first-stage arrangement groove through a first axial fitting;
the outer side wall of the second eccentric sleeve is arranged on the inner side wall of the rear side plate, a second-stage arrangement groove is formed in the inner side wall of the second eccentric sleeve, which is close to one end of the roller box, a plurality of small-end rolling bearings are arranged in the second-stage arrangement groove, and the small-end rolling bearings are arranged between the opposite surfaces of the roller shaft and the second-stage arrangement groove through a second axial fitting.
Optionally, the first axial fitting comprises;
the inner walls of the first lining rings are arranged on the outer surfaces of the roll shafts, and the inner rings of the plurality of large-end rolling bearings are respectively arranged on the outer surfaces of the first lining rings;
the number and the installation positions of the first outer fixing rings are respectively corresponding to those of the large-end rolling bearing, the outer side wall of the first outer fixing rings is installed in the first-stage installation groove, a first annular groove is formed in the inner side wall of the first outer fixing rings, and the outer ring of the large-end rolling bearing is installed in the first annular groove;
the first press ring is installed on the end face of the first eccentric sleeve, which is close to one side of the roller box, the inner side of the first press ring extends to the end part of the first-stage settling groove, and a plurality of first outer fixing rings are sequentially pressed in the first-stage settling groove.
Optionally, the second axial fitting comprises;
the inner walls of the second lining rings are arranged on the outer surfaces of the roll shafts, and the inner rings of the small-end rolling bearings are respectively arranged on the outer surfaces of the second lining rings;
the number and the installation positions of the second outer fixing rings are respectively corresponding to those of the small-end rolling bearings, the outer side walls of the second outer fixing rings are installed in the second-stage installation grooves, second annular grooves are formed in the inner side walls of the second outer fixing rings, and the outer rings of the small-end rolling bearings are installed in the second annular grooves;
the second pressing ring is installed on the end face, close to one side of the roller box, of the second eccentric sleeve, the inner side of the second pressing ring extends to the end portion of the second-stage installation groove, and a plurality of second external fixing rings are sequentially pressed and connected in the second-stage installation groove.
Optionally, the rolling ball bearing is installed in the second eccentric sleeve, a compression sleeve is arranged between the inner ring of the rolling ball bearing and the opposite surface of the second inner lining ring, and the compression sleeve is installed on the outer surface of the roll shaft;
and a rear end cover is arranged at one end, far away from the roller box, of the second eccentric sleeve, and the rear end cover is in press connection with an outer ring of the rolling ball bearing.
Alternatively, the large-end rolling bearing and the small-end rolling bearing are both provided as cylindrical roller bearings.
Optionally, the axial installation length of the primary installation groove is the same as the front end rolling moment of the roll shaft;
the axial installation length of the secondary installation groove is the same as the rear end rolling moment of the roll shaft.
The utility model has the beneficial effects that:
1) According to the rolling bearing cantilever roll collar rolling mill provided by the utility model, the traditional oil film bearing is changed into the rolling bearing, so that the roll shaft is not limited by low rotation speed and is limited by high rotation speed only when in loading operation, and the rolling bearing cantilever roll collar rolling mill is suitable for stable operation under the loading condition of low speed and large load.
2) According to the rolling bearing cantilever roll collar rolling mill, the first axial fitting and the second axial fitting are arranged and are respectively used for fixedly mounting the large-end rolling bearing and the small-end rolling bearing, so that radial loads are uniformly dispersed on the large-end rolling bearing and the small-end rolling bearing when a roll shaft is in loading operation, and the large-end rolling bearing and the small-end rolling bearing provide rotary supporting force arms for the roll shaft.
3) According to the rolling bearing cantilever roll collar rolling mill provided by the utility model, the axial installation length of the primary installation groove is the same as the front end rolling moment of the roll shaft, and the axial installation length of the secondary installation groove is the same as the rear end rolling moment of the roll shaft, so that the radial load distribution of the front end and the rear end of the roll shaft is balanced in the low-speed rolling process, and the requirement of a safe use coefficient is met.
Drawings
FIG. 1 is a schematic view of a rolling bearing cantilever roll collar mill according to the present utility model;
FIG. 2 is an enlarged view of the portion A of FIG. 1 in accordance with the present utility model;
FIG. 3 is an enlarged view of the portion B of FIG. 1 in accordance with the present utility model;
in the figure: 1. a roller box; 2. a front side plate; 3. a rear side plate; 4. a roll shaft; 5. a roller; 6. a taper sleeve; 7. a rolling ball bearing; 8. a first eccentric sleeve; 9. a second eccentric sleeve; 10. a first-stage installation groove; 11. a large end rolling bearing; 12. a first liner ring; 13. a first outer fixing ring; 14. a first annular groove; 15. a first press ring; 16. a rear end cover; 17. a second-stage installation groove; 18. a small end rolling bearing; 19. a second liner ring; 20. a second outer fixing ring; 21. a second annular groove; 22. a second press ring; 23. and (5) compacting the sleeve.
Detailed Description
The present utility model is described in detail below with reference to examples, but the present utility model is not limited to these examples.
As shown in fig. 1-3, the utility model provides a rolling bearing cantilever roll collar rolling mill, which comprises a roll box 1, wherein a front side plate 2 and a rear side plate 3 are respectively arranged at two ends of the roll box 1, two roll shafts 4 are symmetrically arranged in the roll box 1, the front ends of the two roll shafts 4 are respectively extended to the outer part of the front side plate 2 and sleeved with a roll 5, the top of the roll shaft 4 is sleeved with a taper sleeve 6, the part, close to the bottom end, of the taper sleeve 6 is positioned in the roll 5 and is tightly attached to the inner side wall of the roll 5, a rolling ball bearing 7 is arranged at the outer part, extending to the rear side plate 3, of the rear end of the roll shaft 4, and a first eccentric sleeve 8 and a second eccentric sleeve 9 are respectively arranged at the outer side of the roll shaft 4; the outer side wall of the first eccentric sleeve 8 is arranged on the inner side wall of the front side plate 2, one end, close to the roller box 1, of the inner side wall of the first eccentric sleeve 8 is provided with a first-stage arrangement groove 10, a plurality of large-end rolling bearings 11 are arranged in the first-stage arrangement groove 10, and the large-end rolling bearings 11 are arranged between the roller shaft 4 and the opposite surface of the first-stage arrangement groove 10 through a first axial fitting; the outer side wall of the second eccentric sleeve 9 is arranged on the inner side wall of the rear side plate 3, a second-stage arrangement groove 17 is formed in the inner side wall of the second eccentric sleeve 9, which is close to one end of the roller box 1, a plurality of small-end rolling bearings 18 are arranged in the second-stage arrangement groove 17, and the small-end rolling bearings 18 are arranged between the roller shaft 4 and the opposite surface of the second-stage arrangement groove 17 through a second axial fitting.
In this embodiment, the conventional oil film bearing is changed into the rolling bearing, so that the roller shaft 4 is not limited by low rotation speed and is limited by high rotation speed only when in loading operation, and the device is suitable for stable operation under the loading condition of low speed and large load.
In the above description, the first axial fitting includes a first inner lining ring 12, a plurality of first outer fixing rings 13 and a first compression ring 15, the inner wall of the first inner lining ring 12 is mounted on the outer surface of the roll shaft 4 in an interference fit manner, and the inner rings of a plurality of large-end rolling bearings 11 are mounted on the outer surface of the first inner lining ring 12 in an interference fit manner respectively; the number and the installation positions of the plurality of first outer fixed rings 13 respectively correspond to those of the large-end rolling bearing 11, the outer side walls of the first outer fixed rings 13 are installed in the first-stage installation groove 10 in a clearance fit or transition fit mode, first annular grooves 14 are formed in the inner side walls of the first outer fixed rings 13, and the outer rings of the large-end rolling bearing 11 are embedded and installed in the first annular grooves 14; the first compression ring 15 is arranged on the end surface of one side of the first eccentric sleeve 8, which is close to the roller box 1, through fasteners such as screws, the inner side of the first compression ring 15 extends to the end part of the first-stage installation groove 10, and a plurality of first outer fixing rings 13 are sequentially pressed and connected in the first-stage installation groove 10; can carry out fixed mounting to big end antifriction bearing 11 through first axial accessory, in the use, roller 4 drives the inner circle of first inner liner ring 12 and a plurality of big end antifriction bearing 11 and rotates in step for roller 4 passes through first inner liner ring 12 with radial load evenly distributed on a plurality of big end antifriction bearing 11, makes a plurality of big end antifriction bearing 11 provide the rotation support arm of force for the front end of roller 4.
Further, the second axial fitting comprises a second lining ring 19, a plurality of second external fixing rings 20 and a second compression ring 22, wherein the inner walls of the second lining ring 19 are installed on the outer surface of the roll shaft 4 in an interference fit manner, and the inner rings of the plurality of small-end rolling bearings 18 are installed on the outer surface of the second lining ring 19 in an interference fit manner respectively; the number and the installation positions of the second external fixing rings 20 respectively correspond to those of the small-end rolling bearings 18, the outer side walls of the second external fixing rings 20 are installed in the second-stage installation groove 17 in a clearance fit or transition fit manner, a second annular groove 21 is formed in the inner side walls of the second external fixing rings 20, and the outer rings of the small-end rolling bearings 18 are installed in the second annular groove 21 in an embedded manner; the second compression ring 22 is arranged on the end surface of one side of the second eccentric sleeve 9 close to the roller box 1 through fasteners such as screws, the inner side of the second compression ring 22 extends to the end part of the second-stage installation groove 17, and a plurality of second external fixing rings 20 are sequentially pressed and connected in the second-stage installation groove 17; the small-end rolling bearings 18 can be fixedly installed through the second shaft fittings, and in the using process, the roll shaft 4 drives the second lining ring 19 and inner rings of the small-end rolling bearings 18 to synchronously rotate, so that radial loads are uniformly dispersed on the small-end rolling bearings 18 through the second lining ring 19, and the small-end rolling bearings 18 provide rotary supporting arms for the rear ends of the roll shaft 4.
Specifically, in the present embodiment, the large-end rolling bearing 11 and the small-end rolling bearing 18 are each provided as cylindrical roller bearings, and the number thereof is set to 4.
Further, the rolling ball bearing 7 is installed in the second eccentric sleeve 9, a compression sleeve 23 is tightly installed between the inner ring of the rolling ball bearing 7 and the opposite surface of the second inner lining ring 19, the compression sleeve 23 is installed on the outer surface of the roller shaft 4, the rear end cover 16 is installed at one end, far away from the roller box 1, of the second eccentric sleeve 9, the rear end cover 16 is in compression joint on the outer ring of the rolling ball bearing 7, the compression sleeve 23 and the rear end cover 16 are used for axially limiting the rolling ball bearing 7, and the second inner lining ring 19 is axially assisted and limited through the compression sleeve 23.
Further, the axial installation length of the primary installation groove 10 is the same as the front end rolling moment of the roll shaft 4, and the axial installation length of the secondary installation groove 17 is the same as the rear end rolling moment of the roll shaft 4, so that the front end and the rear end of the roll shaft 4 are ensured to be balanced in radial load distribution in the low-speed rolling process, and the requirement of a safe use coefficient is met.
While the utility model has been described in terms of preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the utility model, and it is intended that the utility model is not limited to the specific embodiments disclosed.
Claims (6)
1. The cantilever rolling ring rolling mill with the rolling bearings comprises a rolling box (1), wherein a front side plate (2) and a rear side plate (3) are respectively arranged at two ends of the rolling box (1), two rolling shafts (4) are symmetrically arranged in the rolling box (1), the front ends of the two rolling shafts (4) are respectively extended to the outer part of the front side plate (2) and sleeved with a roller (5), a taper sleeve (6) is sleeved at the top of the rolling shafts (4), the part, close to the bottom end, of the taper sleeve (6) is positioned in the roller (5) and is tightly attached to the inner side wall of the roller (5), and a rolling ball bearing (7) is arranged at the outer part of the rear side plate (3) and is characterized in that a first eccentric sleeve (8) and a second eccentric sleeve (9) are respectively arranged at the outer side of the rolling shafts (4);
the outer side wall of the first eccentric sleeve (8) is arranged on the inner side wall of the front side plate (2), one end, close to the roller box (1), of the inner side wall of the first eccentric sleeve (8) is provided with a first-stage arrangement groove (10), a plurality of large-end rolling bearings (11) are arranged in the first-stage arrangement groove (10), and the large-end rolling bearings (11) are arranged between the opposite surfaces of the roller shaft (4) and the first-stage arrangement groove (10) through first axial fittings;
the outer side wall of the second eccentric sleeve (9) is arranged on the inner side wall of the rear side plate (3), a second-stage arrangement groove (17) is formed in the inner side wall of the second eccentric sleeve (9) close to one end of the roller box (1), a plurality of small-end rolling bearings (18) are arranged in the second-stage arrangement groove (17), and the small-end rolling bearings (18) are arranged between the opposite surfaces of the roller shaft (4) and the second-stage arrangement groove (17) through second-shaft fittings.
2. The rolling bearing cantilever roll collar mill of claim 1, wherein the first axial fitting comprises:
the inner walls of the first lining rings (12) are arranged on the outer surfaces of the roller shafts (4), and the inner rings of the large-end rolling bearings (11) are respectively arranged on the outer surfaces of the first lining rings (12);
the number and the installation positions of the plurality of first outer fixing rings (13) are respectively corresponding to those of the large-end rolling bearings (11), the outer side walls of the first outer fixing rings (13) are installed in the first-stage installation grooves (10), first annular grooves (14) are formed in the inner side walls of the first outer fixing rings (13), and the outer rings of the large-end rolling bearings (11) are installed in the first annular grooves (14);
the first compression ring (15), first compression ring (15) are installed on the terminal surface that first eccentric sleeve (8) is close to roller case (1) one side, the inboard of first compression ring (15) extends to the tip of one-level mounting groove (10), will a plurality of outer fixed ring (13) press in proper order in one-level mounting groove (10).
3. The rolling bearing cantilever roll collar mill of claim 1, wherein the second axial fitting comprises:
the inner walls of the second lining rings (19) are arranged on the outer surfaces of the roller shafts (4), and the inner rings of the small-end rolling bearings (18) are respectively arranged on the outer surfaces of the second lining rings (19);
the number and the installation positions of the second outer fixing rings (20) are respectively corresponding to the small-end rolling bearings (18), the outer side walls of the second outer fixing rings (20) are installed in the second-stage installation grooves (17), second annular grooves (21) are formed in the inner side walls of the second outer fixing rings (20), and the outer rings of the small-end rolling bearings (18) are installed in the second annular grooves (21);
the second pressing ring (22), the second pressing ring (22) is installed on the terminal surface that second eccentric sleeve (9) is close to roller case (1) one side, the inboard of second pressing ring (22) extends to the tip of second level setting groove (17), will a plurality of second external fixation ring (20) press in proper order in second level setting groove (17).
4. A rolling bearing cantilever roll collar mill according to claim 3, characterized in that the rolling ball bearing (7) is mounted in the second eccentric sleeve (9), a compression sleeve (23) is arranged between the inner ring of the rolling ball bearing (7) and the opposite face of the second inner lining ring (19), the compression sleeve (23) being mounted on the outer surface of the roll shaft (4);
and a rear end cover (16) is arranged at one end, far away from the roller box (1), of the second eccentric sleeve (9), and the rear end cover (16) is in pressure connection with the outer ring of the rolling ball bearing (7).
5. Rolling bearing cantilever rolling mill according to claim 1, characterized in that the large end rolling bearing (11) and the small end rolling bearing (18) are each provided as cylindrical roller bearings.
6. Rolling bearing cantilever roll collar mill according to claim 1, characterized in that the axial installation length of the primary installation groove (10) is the same as the front end rolling moment of the roll shaft (4);
the axial installation length of the secondary installation groove (17) is the same as the rear end rolling moment of the roll shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322331568.9U CN220426689U (en) | 2023-08-29 | 2023-08-29 | Rolling bearing cantilever roll collar rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322331568.9U CN220426689U (en) | 2023-08-29 | 2023-08-29 | Rolling bearing cantilever roll collar rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220426689U true CN220426689U (en) | 2024-02-02 |
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ID=89689864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322331568.9U Active CN220426689U (en) | 2023-08-29 | 2023-08-29 | Rolling bearing cantilever roll collar rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220426689U (en) |
-
2023
- 2023-08-29 CN CN202322331568.9U patent/CN220426689U/en active Active
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