CN109595256B - Double-row conical bearing unit - Google Patents
Double-row conical bearing unit Download PDFInfo
- Publication number
- CN109595256B CN109595256B CN201711111807.2A CN201711111807A CN109595256B CN 109595256 B CN109595256 B CN 109595256B CN 201711111807 A CN201711111807 A CN 201711111807A CN 109595256 B CN109595256 B CN 109595256B
- Authority
- CN
- China
- Prior art keywords
- bearing
- ring
- rings
- double
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 27
- 239000010687 lubricating oil Substances 0.000 abstract description 10
- 230000001050 lubricating effect Effects 0.000 abstract description 7
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a double-row conical bearing unit. Belongs to the technical field of rolling bearings. The bearing mainly solves the problem that lubricating oil cannot enter the bearing because the annular step in the outer seat hole is cancelled. The main characteristics of the device are as follows: the bearing comprises two bearing outer rings, two bearing inner assemblies and an inner spacer ring; the bearing inner assembly comprises an inner ring, a roller group and a retainer; the inner space ring is positioned between the two inner rings; a plurality of oil grooves extending from the outer diameter of the outer ring to the inner diameter of the outer ring are distributed on the large end surface of the outer ring of the bearing; the two bearing outer rings and the two bearing inner assemblies form two tapered roller bearings with the same structure, the two tapered roller bearings are matched with each other in axial clearance through the inner spacer rings, and the two tapered roller bearings are combined into a double-row tapered bearing unit in a back-to-back mode. The invention has the characteristic that lubricating oil from the middle oil hole of the outer seat enters the bearing to form a lubricating effect, and is mainly used for rotating and supporting the main bevel gear part of the middle-heavy-duty car.
Description
Technical Field
The invention belongs to the technical field of rolling bearings. In particular to a novel double-row conical bearing combined unit structure which is applied to the position of a main driving bevel gear of a medium-heavy duty vehicle.
Background
At present, the support of the driving bevel gear part of the medium and heavy duty vehicle is usually realized by adopting a back-to-back installation mode of two tapered roller bearings. As shown in fig. 1, two tapered roller bearings are installed in an outer seat hole of an outer seat 1 from two sides of the outer seat hole, an annular step is processed at the middle part of an outer ring of the two tapered roller bearings by the outer seat 1, and the bearings are axially positioned and isolated; the middle of the annular step is provided with an oil hole 2 which is communicated with an oil way in the outer seat 1, lubricating oil enters a gap between two tapered roller bearings through the oil hole and flows out of the bearings from the rollers inside the bearings to form a lubricating loop, thereby playing a role in lubrication.
With the development of the automobile industry, the drive bevel gear support adopts a new double-row conical bearing unit structure, the annular step in the middle of the outer seat hole is cancelled, and at the moment, the outer rings of the two bearings are in direct contact without gaps, so that lubricating oil cannot enter the bearings. Therefore, the outer ring of the conical bearing unit or the components thereof are required to be provided with an oil path to ensure that oil supply from the outer seat can reliably enter the bearing to form a lubrication effect. The invention discloses a novel double-row tapered roller bearing combined unit which is developed for achieving the function of a lubricating oil way.
Disclosure of Invention
The invention develops a novel double-row tapered roller bearing combined unit. Under the condition that an inner hole of the outer seat of the main cone is free of a middle annular step and two bearing outer rings are in direct contact, lubricating oil from an oil hole in the middle of the outer seat enters the bearing to form a lubricating effect through an oil path structure arranged on an outer ring component of the bearing unit.
The technical scheme of the invention is as follows: a double-row conical bearing unit comprises two bearing outer rings, two bearing inner assemblies and an inner spacer ring; the bearing inner assembly comprises an inner ring, a roller group and a retainer; the inner space ring is positioned between the two inner rings; the method is characterized in that: a plurality of oil grooves extending from the outer diameter of the outer ring to the inner diameter of the outer ring are distributed on the large end surface of the outer ring of the bearing; the two bearing outer rings and the two bearing inner assemblies form two tapered roller bearings with the same structure, the two tapered roller bearings are matched with each other in axial clearance through the inner spacer rings, and the two tapered roller bearings are combined into a double-row tapered bearing unit in a back-to-back mode.
In the technical scheme of the invention, the two bearing outer rings of the double-row conical bearing unit are in opposite contact with the large end surface and positioned in the middle of the unit when being installed and used.
The oil groove is matched with the oil hole in the middle of the outer seat of the drive bevel gear.
The oil grooves are semicircular grooves uniformly distributed on the large end face of the bearing outer ring.
The oil tanks are 4, 6 or 8 in total.
The invention has the following positive effects:
when the middle part of the outer seat hole of the drive bevel gear is not provided with annular steps for isolating and lubricating the two tapered roller bearings, under the condition that the outer rings of the two tapered roller bearings are in direct contact, lubricating oil can pass through the oil hole in the middle part of the outer seat hole and reliably enter the unit bearing to form a lubricating effect through the oil groove arranged on the large end face of the outer ring of the bearing.
The invention has the characteristic that lubricating oil from the middle oil hole of the outer seat enters the bearing to form a lubricating effect. The invention is mainly used for the rotation support of the main bevel gear part of the medium-heavy truck.
Drawings
Fig. 1 is a schematic diagram of a conventional main cone bearing lubrication structure.
Fig. 2 is a schematic view of the lubrication structure of the present invention.
Fig. 3 is a cross-sectional view of the bearing outer race of the present invention.
Fig. 4 is a left side view of fig. 3.
In the figure: 1. an outer seat; 2. an oil hole; 3. an outer seat; 4. an oil hole; 5. an oil groove.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 2 to 4. The double-row conical bearing unit is formed by combining two conical roller bearings with the same structure in a back-to-back mode through precise pairing of axial clearance achieved by the inner spacer rings. The tapered roller bearing comprises two bearing outer rings, two bearing inner assemblies and an inner spacer ring. The bearing inner assembly includes an inner race, a roller set, and a cage. The inner spacer is positioned between the two inner rings. The bearing outer ring is provided with 8 oil grooves 5 extending from the outer diameter of the outer ring to the inner diameter of the outer ring, the oil grooves 5 are provided with horn-shaped ports at the outer diameter of the outer ring, and the oil grooves 5 are semicircular grooves. When the large end surfaces of the two bearing outer rings are folded and the oil grooves 5 are aligned, 8 oil holes are formed and correspondingly matched with the 8 oil holes 4 in the middle of the outer seat hole of the outer seat 3, and the horn-shaped port is convenient for lubricating oil to flow in through the oil holes in the middle of the outer seat hole. When in use, the two bearing outer rings of the double-row conical bearing unit are in opposite contact with the middle part of the unit when in installation and use. After installation, lubricating oil from the middle part of the outer seat 3 can enter the inside of the unit bearing to perform a lubricating function.
The installation process comprises the following steps:
The inner diameter of the double-row conical bearing unit is in interference fit with the shaft, the outer diameter of the double-row conical bearing unit is in small clearance fit with the outer seat hole, and when the double-row conical bearing unit is installed, the combined units of the two conical roller bearings are integrally pressed on the shaft by a press machine, and the nut is screwed; the assembly is then installed into the outer socket with little pressure or by hammering.
Claims (4)
1. A double-row conical bearing unit comprises two bearing outer rings, two bearing inner assemblies and an inner spacer ring; the bearing inner assembly comprises an inner ring, a roller group and a retainer; the inner space ring is positioned between the two inner rings; the method is characterized in that: a plurality of oil grooves (5) extending from the outer diameter of the outer ring to the inner diameter of the outer ring are distributed on the large end surface of the outer ring of the bearing; the two bearing outer rings and the two bearing inner assemblies form two tapered roller bearings with the same structure, the two tapered roller bearings with the same structure achieve precise pairing of axial clearance through the inner spacer rings, and the two tapered roller bearings are combined into a double-row tapered bearing unit in a back-to-back mode; the two bearing outer rings of the double-row conical bearing unit are in opposite contact with the large end surface and positioned in the middle of the unit when in installation and use; when the large end surfaces of the two bearing outer rings are folded and the oil grooves (5) are aligned, oil holes are formed and correspondingly matched with the oil holes (4) in the middle of the outer seat holes of the outer seat (3).
2. A double row conical bearing unit according to claim 1, characterized in that: the oil grooves (5) are semicircular grooves uniformly distributed on the large end face of the bearing outer ring.
3. A double row conical bearing unit according to claim 2, characterized in that: the number of the oil grooves (5) is 4, 6 or 8.
4. A double row conical bearing unit according to claim 1,2 or 3, characterized in that: the oil groove (5) is provided with a horn-shaped port at the outer diameter of the outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111807.2A CN109595256B (en) | 2017-11-13 | 2017-11-13 | Double-row conical bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111807.2A CN109595256B (en) | 2017-11-13 | 2017-11-13 | Double-row conical bearing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595256A CN109595256A (en) | 2019-04-09 |
| CN109595256B true CN109595256B (en) | 2024-09-27 |
Family
ID=65956389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711111807.2A Active CN109595256B (en) | 2017-11-13 | 2017-11-13 | Double-row conical bearing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595256B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032277A (en) * | 2020-08-21 | 2020-12-04 | 浙江兆丰机电股份有限公司 | Fine adjustment-free main cone bearing unit of automobile differential and assembling method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790941A (en) * | 2012-10-30 | 2014-05-14 | 瓦房店福斯特轴承科技开发有限公司 | Double-row tapered roller bearing based on outer ring provided with arc-shaped oil groove |
| CN207514074U (en) * | 2017-11-13 | 2018-06-19 | 襄阳汽车轴承股份有限公司 | A kind of biserial conical bearing unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE754143A (en) * | 1969-11-21 | 1971-02-01 | Timken Roller Bearing Co | SOFT LABYRINTH SEAL BEARING ASSEMBLY |
| CN102086904A (en) * | 2010-12-30 | 2011-06-08 | 瓦房店轴承集团有限责任公司 | Integral sealed double-row tapered roller bearing |
-
2017
- 2017-11-13 CN CN201711111807.2A patent/CN109595256B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790941A (en) * | 2012-10-30 | 2014-05-14 | 瓦房店福斯特轴承科技开发有限公司 | Double-row tapered roller bearing based on outer ring provided with arc-shaped oil groove |
| CN207514074U (en) * | 2017-11-13 | 2018-06-19 | 襄阳汽车轴承股份有限公司 | A kind of biserial conical bearing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109595256A (en) | 2019-04-09 |
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