CN220992334U - Four-row tapered roller bearing for rolling mill - Google Patents
Four-row tapered roller bearing for rolling mill Download PDFInfo
- Publication number
- CN220992334U CN220992334U CN202322644262.9U CN202322644262U CN220992334U CN 220992334 U CN220992334 U CN 220992334U CN 202322644262 U CN202322644262 U CN 202322644262U CN 220992334 U CN220992334 U CN 220992334U
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- CN
- China
- Prior art keywords
- tapered roller
- double
- ring
- roller bearing
- row tapered
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- 238000005096 rolling process Methods 0.000 title claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 abstract description 37
- 239000010687 lubricating oil Substances 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a four-row tapered roller bearing for a rolling mill without an outer spacer, which is formed by arranging two identical double-row tapered roller bearing units in parallel, wherein the two double-row tapered roller bearing units are connected together through an inner spacer; each double-row tapered roller bearing unit comprises two single-raceway outer rings and a double-raceway inner ring, and the double-raceway inner rings form roller flanges at the edges of two ends; the inner spacer ring is arranged between two double-raceway inner rings in the two double-row tapered roller bearing units; tapered rollers are arranged between the double-raceway inner ring of each double-row tapered roller bearing unit and the two single-raceway outer rings outside the double-raceway inner ring, and each tapered roller is fixed by a retainer; the outer ring and the inner ring of the new design are provided with a plurality of semicircular oil holes on the end surfaces matched with each other, so that even if the semicircular oil holes on the two sides are not aligned during installation, lubricating oil can not be influenced to flow into the bearing, and the heat dissipation performance of the bearing is ensured.
Description
Technical Field
The utility model relates to a four-row tapered roller bearing for a rolling mill without an outer spacer ring, and belongs to the technical field of bearings.
Background
In the structure of the traditional four-row tapered roller bearing for the rolling mill, two double-row tapered roller bearings are generally adopted for combination. An outer space ring is arranged between the two single-raceway outer rings of each double-row tapered roller bearing; the outer spacer ring is provided with an oil hole (shown in figure 1), and the oil hole is communicated with an external oil way, so that lubricating oil enters the bearing to keep lubrication.
The oil hole on the outer spacer ring needs to be aligned with the oil way on the shell, so that the difficulty of installation of a client is increased.
Meanwhile, due to the design of the outer spacer ring, the number of parts of the whole bearing is increased, the structure is more complicated, and the assembly and maintenance are not facilitated.
Disclosure of utility model
In view of the technical problems of the four-row tapered roller bearing for the rolling mill, the utility model aims to provide the four-row tapered roller bearing for the rolling mill, which has no outer space ring, reduces the number of parts, has simpler structure and is convenient to assemble and maintain compared with similar products in the traditional design.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the four-row tapered roller bearing for the rolling mill is formed by arranging two identical double-row tapered roller bearing units in parallel, and the two double-row tapered roller bearing units are connected together through an inner spacer ring; each double-row tapered roller bearing unit comprises two single-raceway outer rings and a double-raceway inner ring, and the double-raceway inner rings form roller flanges at the edges of two ends; the inner spacer ring is arranged between two double-raceway inner rings in the two double-row tapered roller bearing units; tapered rollers are arranged between the double-raceway inner ring of each double-row tapered roller bearing unit and the two single-raceway outer rings outside the double-raceway inner ring, and each tapered roller is fixed by a retainer;
further, the section of the inner spacer ring is T-shaped, extension tables are outwards formed at the two ends, and the two extension tables are erected on the flanges of the two double-raceway inner rings;
Further, the raceway section of the single raceway outer ring in each double-row tapered roller bearing unit is in a straight line shape;
Further, the inner diameter surface of the inner ring of the double-raceway in each double-row tapered roller bearing unit is arranged in a spiral line shape;
There is no outer space ring between two single-roller path outer rings in each double-row tapered roller bearing unit, compared with similar products of traditional design, the double-row tapered roller bearing unit has less two parts, and is more convenient for installation and maintenance of clients.
Further, the two outer rings in each double-row tapered roller bearing unit are in end face matching contact, so that the outer rings of the four-row tapered roller bearings for the rolling mill are respectively a first outer ring, a first inner outer ring, a second inner outer ring and a second outer ring from one end to the other end; the two outer side outer rings are matched with the two inner side outer rings;
The first inner ring corresponds to the inner part of the first inner outer ring, and the second inner ring corresponds to the inner part of the second outer ring;
In order to ensure that lubricating oil can flow into the bearing to keep a lubricating effect, a plurality of semicircular oil holes are respectively formed in the end faces of two outer rings of each double-row tapered roller bearing unit, which are matched with each other;
specifically, semicircular oil holes are formed in the end surfaces of the first outer side outer ring and the first inner side outer ring, and in the end surfaces of the second outer side outer ring and the second inner side outer ring;
Further, the first outer ring and the semicircular oil holes on the end surface of the first inner ring are arranged correspondingly or in a staggered manner, and the second outer ring and the semicircular oil holes on the end surface of the second inner ring are arranged correspondingly or in a staggered manner; therefore, even if the semicircular oil holes on the two sides are not aligned during installation, lubricating oil can not be influenced to flow into the bearing, and the heat dissipation performance of the bearing is guaranteed.
Simultaneously, two inner ring end surfaces in each double-row tapered roller bearing unit are respectively contacted with the end surfaces at the two ends of the inner space ring in a matching way; the inner end face of the first inner ring and the inner end face of the second inner ring are respectively matched with the end faces of the two ends of the inner space ring;
Further, a plurality of semicircular oil holes are respectively formed in the end faces of the inner side of the first inner ring and the end faces of the inner spacer ring, which are matched with each other; the inner side of the second inner ring and the end surface of the inner space ring matched with each other are respectively provided with a plurality of semicircular oil holes;
Further, the positions of the semicircular oil holes on the end surface of the inner side of the first inner ring matched with the inner space ring are corresponding to or staggered; the semicircular oil holes on the end surface of the inner side of the second inner ring matched with the inner space ring are arranged correspondingly or in a staggered way; if the oil holes are correspondingly arranged, a round oil hole is formed, the diameter range of the oil hole is large, and the oil passing amount is large; if the lubricating oil is arranged in a dislocation way, the circulation of the lubricating oil is not influenced.
According to the four-row tapered roller bearing, the inner diameter surfaces of the two inner rings of the four-row tapered roller bearing are arranged in a spiral line shape, and when the roller neck of the roller and the inner diameter of the bearing are in transition fit or clearance fit, oil dirt and tiny impurities in a gap can be discharged from the spiral line, so that the abrasion of the surfaces of the roller neck and the inner diameter of the bearing is reduced, and the running quality of the rolling mill is improved.
The four-row tapered roller bearing for the rolling mill has the beneficial effects that:
Compared with the similar products of the traditional design, the outer spacer ring is not arranged, and two outer side outer rings and two inner side outer rings are matched for use. The two parts are less, so that the assembly and maintenance of a customer are more convenient; the outer ring and the inner ring of the new design are provided with a plurality of semicircular oil holes on the end surfaces matched with each other, so that even if the semicircular oil holes on the two sides are not aligned during installation, lubricating oil can not be influenced to flow into the bearing, and the heat dissipation performance of the bearing is ensured.
Drawings
Fig. 1 is a schematic view of a four-row tapered roller bearing of conventional design.
Fig. 2 is a schematic view of a four-row tapered roller bearing for a rolling mill according to the present utility model.
Fig. 3 is a view showing the structure of the outer ring in fig. 1.
Fig. 4 is a view showing the structure of the inner race in fig. 1.
In the figure, 1, an inner spacer ring, 2, tapered rollers, 3, a retainer, 4, a first outer ring, 5, a first inner outer ring, 6, a second inner outer ring, 7, a second outer ring, 8, a first inner ring, 9, a second inner ring, 10, semicircular oil holes, 11 and an outer spacer ring.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
The four-row tapered roller bearing for the rolling mill shown in the figures 2-4 is formed by arranging two identical double-row tapered roller bearing units in parallel, and the two double-row tapered roller bearing units are connected together through an inner space ring 1; each double-row tapered roller bearing unit comprises two single-raceway outer rings and a double-raceway inner ring, and the double-raceway inner rings form roller flanges at the edges of two ends; the inner spacer ring 1 is arranged between two double-raceway inner rings in the two double-row tapered roller bearing units; tapered rollers 2 are arranged between the double-raceway inner ring of each double-row tapered roller bearing unit and the two single-raceway outer rings outside the double-raceway inner ring, and each tapered roller 2 is fixed by a retainer 3;
The section of the inner spacer ring 1 is T-shaped, extension tables are outwards formed at the two ends, and the two extension tables are arranged on the flanges of the two double-raceway inner rings in a building manner; there is no outer space ring between two single-roller path outer rings in each double-row tapered roller bearing unit, compared with similar products of traditional design, the double-row tapered roller bearing unit has less two parts, and is more convenient for installation and maintenance of clients.
The end surfaces of the two outer rings in each double-row tapered roller bearing unit are in matched contact, so that the outer rings of the four-row tapered roller bearing for the rolling mill are respectively a first outer ring 4, a first inner outer ring 5, a second inner outer ring 6 and a second outer ring 7 from one end to the other end; the two outer side outer rings are matched with the two inner side outer rings;
The first outer side outer ring 4 corresponds to the first inner side outer ring 5, and the second inner side outer ring 6 corresponds to the second outer side outer ring 7, and is a first inner ring 8, and the second inner ring 9;
In order to ensure that lubricating oil can flow into the bearing to keep a lubricating effect, a plurality of semicircular oil holes 10 are respectively formed in the end surfaces of the two outer rings of each double-row tapered roller bearing unit, which are matched with each other;
Specifically, semicircular oil holes 10 are formed in the end surfaces of the first outer ring 4 and the first inner ring 5, and in the end surfaces of the second outer ring 6 and the second inner ring 7;
Further, the positions of the semicircular oil holes 10 on the end surface of the first outer ring 4 and the end surface of the first inner ring 5 are corresponding to each other or are staggered, and the positions of the semicircular oil holes 10 on the end surface of the second outer ring 6 and the end surface of the second inner ring 7 are corresponding to each other or are staggered; thus, even if the semicircular oil holes 10 on both sides are misaligned at the time of installation, the inflow of the lubricating oil into the bearing is not affected.
The two inner ring end surfaces in each double-row tapered roller bearing unit are respectively contacted with the end surfaces of the two ends of the inner space ring 1 in a matching way; the inner end surfaces of the first inner ring 8 and the second inner ring 9 are respectively matched with the end surfaces of the two ends of the inner space ring 1;
Further, a plurality of semicircular oil holes 10 are respectively formed in the end surfaces of the inner side of the first inner ring 8 and the inner spacer ring 1, which are matched with each other; the inner side of the second inner ring 9 and the end surface of the inner space ring 1 matched with each other are respectively provided with a plurality of semicircular oil holes 10;
Further, the positions of the semicircular oil holes 10 on the end surface of the inner side of the first inner ring 8 matched with the inner space ring 1 are corresponding to or staggered; the positions of semicircular oil holes 10 on the inner side of the second inner ring 9 and the end surface matched with the inner space ring 1 are corresponding to each other or are staggered; if the oil holes are correspondingly arranged, a round oil hole is formed, the diameter range of the oil hole is large, and the oil passing amount is large; if the lubricating oil is arranged in a dislocation way, the circulation of the lubricating oil is not influenced.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Claims (8)
1. A four-row tapered roller bearing for a rolling mill is characterized in that: the two identical double-row tapered roller bearing units are arranged in parallel and are connected together through an inner spacer ring; each double-row tapered roller bearing unit comprises two single-raceway outer rings and a double-raceway inner ring, and the double-raceway inner rings form roller flanges at the edges of two ends; the inner spacer ring is arranged between two double-raceway inner rings in the two double-row tapered roller bearing units; tapered rollers are arranged between the double-raceway inner ring of each double-row tapered roller bearing unit and the two single-raceway outer rings corresponding to the outer parts of the double-row tapered roller bearing units, and each tapered roller is fixed by a retainer.
2. The four-row tapered roller bearing for a rolling mill according to claim 1, wherein: the section of the inner spacer ring is T-shaped, extension tables are outwards formed at the two ends, and the two extension tables are arranged on the flanges of the two double-raceway inner rings in a building mode.
3. The four-row tapered roller bearing for a rolling mill according to claim 1, wherein: the end surfaces of two outer rings in each double-row tapered roller bearing unit are in matched contact, and the outer rings of the bearing are a first outer ring, a first inner outer ring, a second inner outer ring and a second outer ring from one end to the other end.
4. A four-row tapered roller bearing for a rolling mill according to claim 3, wherein: the first inner ring corresponds to the inner part of the first inner outer ring, and the second inner ring corresponds to the inner part of the second outer ring.
5. A four-row tapered roller bearing for a rolling mill according to claim 3, wherein: a plurality of semicircular oil holes are respectively formed in the end faces of the two outer rings of each double-row tapered roller bearing unit, wherein the end faces are matched with each other.
6. The four-row tapered roller bearing for a rolling mill according to claim 5, wherein: semicircular oil holes are formed in the end faces of the first outer side outer ring and the first inner side outer ring, and in the end faces of the second outer side outer ring and the second inner side outer ring.
7. The four-row tapered roller bearing for a rolling mill according to claim 6, wherein: the first outer ring and the semicircular oil holes on the end surface of the first inner ring are arranged correspondingly or in a staggered way, and the second outer ring and the semicircular oil holes on the end surface of the second inner ring are arranged correspondingly or in a staggered way.
8. The four-row tapered roller bearing for a rolling mill according to claim 4, wherein: two inner ring end surfaces in each double-row tapered roller bearing unit are respectively contacted with two end surfaces of the inner space ring in a matching way; the inner end face of the first inner ring and the inner end face of the second inner ring are respectively matched with the end faces of the two ends of the inner space ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322644262.9U CN220992334U (en) | 2023-09-28 | 2023-09-28 | Four-row tapered roller bearing for rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322644262.9U CN220992334U (en) | 2023-09-28 | 2023-09-28 | Four-row tapered roller bearing for rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220992334U true CN220992334U (en) | 2024-05-24 |
Family
ID=91116005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322644262.9U Active CN220992334U (en) | 2023-09-28 | 2023-09-28 | Four-row tapered roller bearing for rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220992334U (en) |
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2023
- 2023-09-28 CN CN202322644262.9U patent/CN220992334U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |