CN202597452U - Slewing bearing - Google Patents
Slewing bearing Download PDFInfo
- Publication number
- CN202597452U CN202597452U CN2012201279850U CN201220127985U CN202597452U CN 202597452 U CN202597452 U CN 202597452U CN 2012201279850 U CN2012201279850 U CN 2012201279850U CN 201220127985 U CN201220127985 U CN 201220127985U CN 202597452 U CN202597452 U CN 202597452U
- Authority
- CN
- China
- Prior art keywords
- raceway
- ring
- oil
- oil groove
- inner ring
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a slewing bearing, which comprises an outer ring, an inner ring and a steel ball which is arranged between the inner ring and the outer ring, wherein raceways are formed on the outer ring and the inner ring; oil grooves are formed on the raceways; and sealing rings are arranged in sealing grooves of the inner and outer rings; and the slewing bearing is characterized in that the groove curvature of the raceway on the inner ring is equal to the groove curvature of the raceway on the outer ring, and the groove curvature is 0.5125; the joint of the oil grooves and the raceways is in smooth transition; the joint of side faces and the bottom surfaces of the oil grooves is in smooth transition; the sealing ring is a double-lip type sealing ring; and the oil grooves have the width of 11.5mm and the depth of 21.5mm. According to the slewing bearing, the phenomena of common oil leakage and raceway strip and damage in the traditional slewing bearing are avoided, the service performance of the product is improved, and the service life of the product is prolonged.
Description
Technical field
The utility model relates to engineering machinery field, especially a kind of pivoting support.
Background technique
Pivoting support is a kind ofly can bear the large size bearing of bigger thrust load, radial load and tilting moment simultaneously, and it is widely used in fields such as ship equipment, engineering machinery, light industry and machinery, metallurgical machinery, medical machinery, industrial robot, wind-powered electricity generation industry.It is made up of inner ring, outer ring, steel ball, retainer, seal ring, and the circular arc of each free two decentraction of Internal and external cycle raceway is formed by connecting, and has oil groove in the raceway; Seal ring is contained in the seal groove of inside and outside circle, prevents that the lubricant grease in the pivoting support from leaking.But in the pivoting support working procedure, occur causing leakage of oil and raceway bearing capacity not enough because seal ring is poorly sealed through regular meeting, phenomenon such as cause that the raceway damage is peeled off influences the usability and the life-span of pivoting support.
Summary of the invention
The purpose of the utility model is for overcoming the deficiency of above-mentioned existing technology, a kind of pivoting support is provided, and this pivoting support can be avoided oil leakage phenomenon and strengthen the raceway bearing capacity in rotation process, improve usability and life-span.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of pivoting support comprises the steel ball between outer ring, inner ring and the inside and outside circle, and raceway is all arranged on said outer ring, the inner ring; Be provided with oil groove in the raceway; In the seal groove of inside and outside circle seal ring is housed, the ditch curvature of said inner ring raceway equates with the ditch curvature of outer ring raceway, is 0.5125; Said oil groove and raceway joint rounding off, the side of oil groove and joint, bottom surface rounding off; Said seal ring is a lips formula seal ring.
The width of said oil groove is 11.5mm, and the degree of depth is 21.5mm.
The utility model oil groove improves; Increase the width of oil groove; Reduce the oil groove degree of depth, when having enlarged the notes oil quantity, increased the area of contact of grease and steel ball, and the flowability of grease in oil groove; Reduced the frictional force of steel ball and raceway in the pivoting support rotary course, and the stand under load power of raceway; Oil groove and raceway connecting place adopt rounding off, can prevent that raceway wedge angle when heat treatment from stress occurring and concentrating the infringement to raceway, avoid raceway to crack, thereby improve pivoting support performance and life-span.
The raceway circular arc adopts the four-point contact ball formula; Ditch curvature select for use rest on a scientific basis according to and the fi=fe=0.5125 that the product actual verification is drawn of test room; This moment, the contact stress of raceway and steel ball was minimum, and is minimum to the infringement of raceway, the working life of improving pivoting support.
Seal ring adopts lips formula seal ring; Avoided single lip seal circle self pressure tight and seal single shortcoming, double-lip sealing ring adopts the double-layer seal safety structure, when being pushed by grease; The pushing down in rolling ring that circle can be tighter that be sealed by extrusion prevented the oil leakage phenomenon.
The utility model has remedied the common leakage of oil of traditional pivoting support and raceway peels off the damage phenomenon, has improved the usability and the life-span of product.
Description of drawings
Fig. 1 is raceway, tank structure schematic representation;
Fig. 2 is a sealed structural representation;
Wherein, R1 is oil groove and raceway joint fillet, and R2 is the oil groove fillet; 1 is the outer ring partial view, and 2 is the inner ring partial view, and 3 is seal ring, and 4 is the sealing of second road, and 5 is the sealing of first road.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
As shown in Figure 1, tank structure is the circular arc of two sections R2 of symmetry, adds one section rectilinear(-al) again, and oil groove and raceway joint are designed to the fillet of R1.The stress at acute angle place was concentrated when the R1 fillet can be avoided heat treatment, defective such as cause that raceway cracks.The width of oil groove is 11.5mm, and the degree of depth is 21.5mm.The utility model adopts the width that increases oil groove; Reduce the oil groove degree of depth, when having enlarged the notes oil quantity, increased the area of contact of grease and steel ball, and the flowability of grease in oil groove; Reduced the frictional force of steel ball and raceway in the pivoting support rotary course, and the stand under load power of raceway.
Raceway is the four-point contact ball formula, is made up of the circular arc of two decentraction, and steel ball and every circular arc only have a point of contact on 45.The variable quantity that ditch curvature decision steel ball contacts with raceway, ditch curvature is big more, and the variable quantity of steel ball and raceway is big more, and the actual contact bearing capacity is less; Ditch curvature is more little, and the variable quantity of steel ball and raceway is more little, and actual steel ball and raceway are tight more, and raceway frictional force is big more, and raceway is impaired easily.The fi=fe=0.5125 that the ditch curvature of existing steel ball and raceway adopts principle simulation and actual tests chamber that the product testing verification mode is drawn; After raceway that process this moment and the steel ball assembling; Steel ball is rotated in raceway preferably, make the raceway stand under load less again.
Oil groove after the improvement combines with raceway, and grease is flowed in oil groove better, and the area of contact of grease and steel ball; Make the frictional force of steel ball and raceway less; The raceway stand under load is little, has improved the usability of raceway, thereby improves the usability and the life-span of product.
Shown in Figure 2, seal ring 3 is assemblied in respectively on outer ring 1 and the inner ring 2, and seal ring 3 adopts double-lip seals, i.e. two seals measure has prevented the oil leakage phenomenon better.As shown in the figure; Seal ring 3 adopts nitrile rubber to process, and wear-resisting, the oil resistant corrosivity is better; Grease is because gravity and extruding force can produce oil pressure to seal ring; And oil pressure is bigger, at first can push first road sealing 5 and make it tighter be close to the seal groove inwall on the inner ring 2, well stops grease to cross Stamping Steel Ribbon and spills; Even because long-time rotary seal bar fretting wear makes fraction oil cross the sealing of first road, this moment is owing to there be stopping of first road sealing 5; It is static that the grease of this moment is basically, and oil quantity is also less, near gravity; Oil pressure is very little; Pressure to second road sealing 4 is very little, makes it enough seal grease, prevents that grease from spilling external environment condition.
Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technological scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.
Claims (2)
1. pivoting support; Comprise the steel ball between outer ring, inner ring and the inside and outside circle, raceway is all arranged on said outer ring, the inner ring, be provided with oil groove in the raceway; In the seal groove of inside and outside circle seal ring is housed; It is characterized in that the ditch curvature of said inner ring raceway equates with the ditch curvature of outer ring raceway, is 0.5125; Said oil groove and raceway joint rounding off, the side of oil groove and joint, bottom surface rounding off; Said seal ring is a lips formula seal ring.
2. pivoting support as claimed in claim 1 is characterized in that, the width of said oil groove is 11.5mm, and the degree of depth is 21.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201279850U CN202597452U (en) | 2012-03-30 | 2012-03-30 | Slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201279850U CN202597452U (en) | 2012-03-30 | 2012-03-30 | Slewing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597452U true CN202597452U (en) | 2012-12-12 |
Family
ID=47314997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201279850U Expired - Fee Related CN202597452U (en) | 2012-03-30 | 2012-03-30 | Slewing bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597452U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206460A (en) * | 2013-05-06 | 2013-07-17 | 无锡市第二轴承有限公司 | High-speed precision bearing grease storing outer ring structure |
| CN111120520A (en) * | 2019-12-23 | 2020-05-08 | 宁波市海曙凯大机械有限公司 | Ball bearing raceway with heart-shaped curvature |
-
2012
- 2012-03-30 CN CN2012201279850U patent/CN202597452U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206460A (en) * | 2013-05-06 | 2013-07-17 | 无锡市第二轴承有限公司 | High-speed precision bearing grease storing outer ring structure |
| CN103206460B (en) * | 2013-05-06 | 2016-06-29 | 无锡市第二轴承有限公司 | High-speed precision bearing depot fat outer ring structure |
| CN111120520A (en) * | 2019-12-23 | 2020-05-08 | 宁波市海曙凯大机械有限公司 | Ball bearing raceway with heart-shaped curvature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160527 Address after: 266000 Qingdao hi tech Industrial Development Zone, Shandong branch rhyme Road No. 101 Patentee after: Qingdao Department of intelligent equipment Limited by Share Ltd Address before: 266400, No. 755, Lingang 1 road, Lingang Economic Development Zone, Qingdao, Shandong, Jiaonan Patentee before: Henryn management consulting (Qingdao) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20190330 |