CN110886770A - Double-row conical main shaft bearing retainer - Google Patents
Double-row conical main shaft bearing retainer Download PDFInfo
- Publication number
- CN110886770A CN110886770A CN201911371211.5A CN201911371211A CN110886770A CN 110886770 A CN110886770 A CN 110886770A CN 201911371211 A CN201911371211 A CN 201911371211A CN 110886770 A CN110886770 A CN 110886770A
- Authority
- CN
- China
- Prior art keywords
- bearing
- main shaft
- retainer
- row conical
- shaft bearing
- 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.)
- Pending
Links
- 230000000717 retained effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
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
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
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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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to a double-row conical main shaft bearing retainer, which is an independent split type, wherein two rows of rollers are respectively retained between raceways of an inner ring and an outer ring of a bearing by retainers at two sides; the thread directions of the threaded ends of the struts on the retainers on the two sides are opposite. In the bearing, the self-rotation of the rolling bodies enables the retainer pillar and the threaded hole of the side washer of the retainer to be always in a tight fit state in the operation process, so that the stability of the bearing is improved.
Description
Technical Field
The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to a double-row conical main shaft bearing retainer.
Background
The wind power main shaft is an important part in the whole fan, is positioned between a fan blade and a speed increasing box and is used for transmitting kinetic energy generated by the rotation of the blade to the speed increasing box. With the continuous development of the wind power industry, the double-row conical bearing is gradually applied to a main shaft of a fan, the stress condition of a wind wheel is extremely bad in the operation process of a wind driven generator, the wind wheel needs to continuously operate under a rapidly changing load, and the main shaft bearing plays a vital role in ensuring the stable operation of the fan, and blades borne by the main shaft bearing transmit various complex working conditions on the main shaft, so that the double-row conical bearing is different from a common turntable bearing in design, manufacture and maintenance and the service life of the double-row conical bearing is ensured for 20 years.
Because the working environment of the fan is complex and severe, parts of the bearing are particularly important in structural design, manufacturing and the like, wherein the double-row conical main shaft bearing retainer is an important aspect of research all the time. As the welding spot of the retainer is easy to fall off along with the operation of the bearing, the service performance of the bearing is affected, and the service life of the bearing cannot be met.
Disclosure of Invention
According to the fan structure of the prior art, the invention aims to provide a large double-row conical main shaft bearing retainer for improving the stability of the conical bearing retainer under the condition that a double-row conical bearing is used as a fan main shaft bearing.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the double-row conical main shaft bearing retainer is an independent split type, two rows of rollers are respectively retained between raceways of an inner ring and an outer ring of a bearing by retainers on two sides, the retainer comprises a strut and gaskets connected to two ends of the strut, one end of the strut is provided with a threaded end, the other end of the strut is provided with a smooth end, and the threaded end of the strut is in threaded connection with the gaskets; the thread directions of the threaded ends of the struts on the retainers on the two sides are opposite.
Further, the smooth end of the strut is clearance fit with the washer.
Further, the gasket comprises an inner gasket and an outer gasket, the outer gasket close to the end face of the bearing is provided with a threaded hole and is connected with the threaded end of the support pillar, and the inner gasket close to the center of the bearing is connected with the smooth end of the support pillar.
Further, the screwing directions of the threaded holes of the outer washers on the two sides are opposite.
Further, the two side retainers are symmetrically arranged.
Further, the washer is in clearance fit with the roller end face.
Further, the gasket is in clearance fit with the bearing inner ring, and the gasket is in clearance fit with the bearing outer ring.
Further, the roller end face is in contact with the side wall of the bearing inner ring raceway.
The invention has the beneficial effects that: in the bearing, the self-rotation of the rolling bodies enables the retainer pillar and the threaded hole of the side washer of the retainer to be always in a tight fit state in the operation process, so that the stability of the bearing is improved.
Drawings
FIG. 1 is a schematic view of a cage construction;
in the figure: 1. inner ring, 2, outer ring, 3, roller, A, D: outer gasket, B, E: strut, C, F: an inner gasket.
Detailed Description
In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.
Referring to the attached drawing 1, the double-row conical main shaft bearing retainer is an independent split type, the two side retainers are symmetrically arranged, two rows of rollers 3 are respectively retained between raceways of a bearing inner ring 1 and an outer ring 2 by the two side retainers, the first retainer comprises a retainer pillar B, an outer washer A and an inner washer C, the second retainer comprises a retainer pillar E, an outer washer D and an inner washer F, one end of the pillar B is a forward-rotation screw, the outer washer A is provided with a forward-rotation threaded hole and is matched with a forward-rotation screw end of the pillar B, the other end of the pillar B is a smooth end without threads, and the inner washer C is in clearance fit with the smooth end of the pillar B; one end of the pillar E is a reverse-rotation screw, the outer gasket D is provided with a reverse-rotation threaded hole and is matched with the reverse-rotation screw end of the pillar E, the other end of the pillar E is a smooth end without threads, and the inner gasket F is in clearance fit with the smooth end of the pillar E.
Further, the outer gasket A and the outer gasket D are in clearance fit with the end faces of the rollers. The friction between the gasket and the end surface of the roller can be reduced, the thread can be screwed conveniently, and a self-locking state of flexible connection is formed.
Furthermore, the inner washer C and the inner washer F are in clearance fit with the bearing inner ring 1 to limit the displacement of the inner washer, so that the inner ring, the inner washer, the strut and the outer washer form a flexibly connected self-locking state, and the flexibility of the retainer can be effectively improved.
Further, the roller end face is in contact with the side wall of the bearing inner ring raceway. The roller can be limited in the bearing raceway, the roller is prevented from moving, and the clearance fit between the gasket and the bearing ring is ensured.
Compared with the retainer in the prior art, the retainer has the following advantages:
the main shaft bearing structure is a double-row tapered roller bearing. The conventional design of the tapered roller retainer pillar and the gasket applied in the prior art is a forward-screwing screw, but along with the operation of the bearing, the retainer pillar and the gasket on one side of the bearing are in threaded connection and are loosened. And this patent designs the holder pillar and the packing ring of bearing one side for the positive thread connection, and opposite side holder pillar and packing ring design are the derotation threaded connection for the bearing is at the operation in-process, and the rolling element is from passing and is making to be in the tight fit state between holder pillar B and the holder side packing ring A screw hole all the time, thereby improves the stability of bearing.
The technical scheme of the invention is that the washers on two sides of the retainer are integrally machined, the welding spots do not exist between the retainer strut and the washers, one end of the retainer strut is in clearance fit with the washers, so that the retainer is in a flexible state, the retainer strut, the inner ring form a self-locking state of flexible connection, the retainer has no weak point caused by welding in the bearing operation process, the strength of the retainer is improved, and the reliability of the bearing is better ensured.
The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (8)
1. Double-row conical main shaft bearing retainer, its characterized in that: the retainer is an independent split type, two rows of rollers are respectively retained between raceways of an inner ring and an outer ring of the bearing by the retainers on two sides, the retainer comprises a strut and gaskets connected to two ends of the strut, one end of the strut is a threaded end, the other end of the strut is a smooth end, and the threaded end of the strut is in threaded connection with the gaskets; the thread directions of the threaded ends of the struts on the retainers on the two sides are opposite.
2. The double row conical main shaft bearing cage according to claim 1, wherein: the smooth end of the strut is in clearance fit with the washer.
3. The double row conical main shaft bearing cage of claim 2, wherein: the gasket comprises an inner gasket and an outer gasket, the outer gasket close to the end face of the bearing is provided with a threaded hole and is connected with the threaded end of the support pillar, and the inner gasket close to the center of the bearing is in clearance fit with the smooth end of the support pillar.
4. The double row conical main shaft bearing cage of claim 3, wherein: the screw thread holes of the outer washers on the two sides have opposite rotating directions.
5. The double row conical main shaft bearing cage according to claim 1, wherein: the two side retainers are symmetrically arranged.
6. The double row conical main shaft bearing cage according to claim 1, wherein: the washer is in clearance fit with the end face of the roller.
7. The double row conical main shaft bearing cage according to claim 1, wherein: the gasket is in clearance fit with the bearing inner ring, and the gasket is in clearance fit with the bearing outer ring.
8. The double row conical main shaft bearing cage according to claim 1, wherein: the end face of the roller is in contact with the side wall of the raceway of the bearing inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911371211.5A CN110886770A (en) | 2019-12-26 | 2019-12-26 | Double-row conical main shaft bearing retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911371211.5A CN110886770A (en) | 2019-12-26 | 2019-12-26 | Double-row conical main shaft bearing retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110886770A true CN110886770A (en) | 2020-03-17 |
Family
ID=69753285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911371211.5A Pending CN110886770A (en) | 2019-12-26 | 2019-12-26 | Double-row conical main shaft bearing retainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110886770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253619A (en) * | 2020-11-25 | 2021-01-22 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Large-cone-angle double-row tapered roller bearing for wind power main shaft |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194511A (en) * | 2018-03-06 | 2018-06-22 | 洛阳新强联回转支承股份有限公司 | A kind of retainer of double-row conical bearing |
| CN211175001U (en) * | 2019-12-26 | 2020-08-04 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Double-row conical main shaft bearing retainer |
-
2019
- 2019-12-26 CN CN201911371211.5A patent/CN110886770A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194511A (en) * | 2018-03-06 | 2018-06-22 | 洛阳新强联回转支承股份有限公司 | A kind of retainer of double-row conical bearing |
| CN211175001U (en) * | 2019-12-26 | 2020-08-04 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Double-row conical main shaft bearing retainer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253619A (en) * | 2020-11-25 | 2021-01-22 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Large-cone-angle double-row tapered roller bearing for wind power main shaft |
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