CN2560786Y - Deep-hole hollow roller bearing - Google Patents
Deep-hole hollow roller bearing Download PDFInfo
- Publication number
- CN2560786Y CN2560786Y CN02247648U CN02247648U CN2560786Y CN 2560786 Y CN2560786 Y CN 2560786Y CN 02247648 U CN02247648 U CN 02247648U CN 02247648 U CN02247648 U CN 02247648U CN 2560786 Y CN2560786 Y CN 2560786Y
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- China
- Prior art keywords
- roller bearing
- hole
- hollow
- roller
- bearing
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- 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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- 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
- F16C33/34—Rollers; Needles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a deep-hole hollow roller bearing, which belongs to a new roller bearing in the bearing field. holes are arranged in the rolling body of the cylindrical roller bearing and can be divided into left, right and middle roller holes, the left and right roller holes are communicated with the middle hole and are positioned at both ends of the middle hole; the left and right roller holes and the middle hole have the same shaft center, and the diameter of the left and right roller holes is greater than the middle hole. The utility model not only has the advantages of a common hollow roller bearing, but also can avoid the concentration of the boundary stress of the equivalent stress for the hollow roller bearing, so that the fatigue life is higher than the common hollow roller bearing and the advantage of the logarithm roller bearing is possessed as well. In addition, the utility model had no need for surface finishing and processing in the aspect of processing technique, accordingly avoids the requirement of high-precision processing technology, and is superior to the logarithm roller bearing technologically. The utility model can be widely applied various machines in the fields of spaceflight and aviation, railway, shipping, automobile and others.
Description
Affiliated technical field
Dark cave described in the utility model hollow roller bearing belongs to a kind of novel roller bearing in field of bearings.
Background technique
At present the rolling element of existing straight edge line roller bearing and the early stage contact fatigue spot corrosion between raceway usually occur on roller or the raceway zone near the roller end in field of bearings, this is because straight edge line roller bearing rolling element two ends behind stand under load inevitably exist boundary stress to concentrate i.e.: so-called " edge effect ".The generation of " edge effect " reduces the fatigue life of bearing greatly, is inversely proportional to because studies show that the life-span of bearing and 9 powers of stress.This in order to overcome " edge effect ", Lundberg has just proposed the basic theories of bus correction of the flank shape as far back as the end of the thirties, and SKF bearing company has further developed the correction of the flank shape technology of roller bearing until the sixties.
At present, the correction of the flank shape curved surface roller bearing that adopts in the engineering has: the circular arc camber roller bearing; The two ends, cylndrical surface add the circular arc camber roller bearing; Logarithm curved surface roller bearing.Yet the processing of various curved surfaces all belongs to the improvement of gabarit correction of the flank shape, and the measuring accuracy of this class correction of the flank shape is in the micron number magnitude.Therefore, this correction of the flank shape needs high-precision processing technique.If machining accuracy is not enough, just can not obtain correct outer contour curved surface, stress is concentrated and just can not be avoided so, this means that this class bearing is to the machining accuracy sensitivity.Because this class roller bearing of the domestic use of processing difficulties is mainly by import, for example: what be used in a large number that the roller bearing of passenger train axle box has many usefulness is exactly the bearing that the internationally famous bearing SKF of company produces.This class bearing of import all spends a large amount of foreign exchange of country every year.
The exploitation of hollow cylindrical roller bearing can trace back to before a century, and the application of hollow roller in high-speed bearing is just to be subjected to paying attention to widely the sixties in eighties of last century.Reasonable in design preload hollow rolling body bearing and not only can improve fatigue life greatly, and have high rotating accuracy, high rigidity and high advantages such as limit speed.Because hollow roller bearing can adapt to vibratory impulse load better, improve the lubricated cool condition of bearing arrangement, the hollow roller bearing that people are attempting not having preload is applied to some low speed, heavily loaded occasion.And the former Soviet Union is applied to rail vehicles with hollow roller bearing as far back as eighties of last century the seventies.Yet, though under identical condition, hollow roller bearing reasonable in design is longer than the common roller bearing life-span, but because existing hollow roller bearing is a kind of hollow cylinder inner hole structure that has, find the serious problems that many bearings edge cracks by long-term use, so carrying out finite element analysis at this type of phenomenon shows, the problem that the equivalent stress of hollow roller bearing still exists boundary stress to concentrate, so develop a kind of brand-new dark cave hollow roller bearing, existing problem is very necessary in the prior art to overcome.
Summary of the invention
In view of existing problem in the above-mentioned prior art, the purpose of this utility model one is to solve the problem that the boundary stress of the equivalent stress of hollow roller bearing is concentrated, the 2nd, and make bearing avoid the superlinishing requirement on processing technology of logarithm roller when the logarithm roller bearing can overcome the advantage that boundary stress concentrates having.Have the hole in the rolling element in the roller bearing described in the utility model, its hole is divided into left and right hole of roller and middle hole, and the left and right hole of roller communicates with middle hole, and is positioned at the two ends in middle hole; The left and right hole of roller has identical axle center with middle hole, and the bore dia in its hole, left and right two ends is greater than middle hole diameter.The structure shape in the left and right hole of roller in the rolling element of dark cave described in the utility model hollow cylindrical roller bearing is: the various combination of frustoconic shape hole or cylindrical cavity or frustoconic shape hole and cylindrical cavity two bodies.Specifically can be divided into the composite entity of the composite entity of hollow cylinder and round platform, hollow round platform and cylinder, hollow round platform A body, hollow round platform B body, hollow cylinder body, the structure shape in middle hole is the hollow cylinder body.Dark cave described in the utility model hollow roller bearing is when having the advantage of hollow roller bearing, can avoid the boundary stress of the equivalent stress of hollow roller bearing to concentrate, thereby be higher than medium-sized hollow roller bearing fatigue life, have the advantage of logarithm roller bearing.In addition, dark cave hollow roller bearing need not surperficial correction of the flank shape processing, thereby has avoided high-precision processing technique requirement on processing technology, is better than the logarithm roller bearing on technology again.So dark cave described in the utility model hollow roller bearing can be widely used in the various machineries of space flight and aviation, railway, shipping, automobile and other industry.
Description of drawings
The utility model has eight accompanying drawings, wherein:
Accompanying drawing 1 is the structural representation of dark cave hollow roller bearing.
Accompanying drawing 2 is the dark cave of round platform formula roller structure cut-away views of dark cave hollow roller bearing.
Accompanying drawing 3 is composite entity sectional views of hollow round platform of dark cave hollow roller bearing and cylinder.
Accompanying drawing 4 is composite entity sectional views of dark cave hollow roller bearing hollow cylinder and round platform.
Accompanying drawing 5 is the hollow round platform A of dark cave hollow roller bearing body sectional views.
Accompanying drawing 6 is the hollow round platform B of dark cave hollow roller bearing body sectional views.
Accompanying drawing 7 is the hollow hollow cylinder body of dark cave hollow roller bearing sectional views.
Accompanying drawing 8 be dark cave hollow roller bearing and solid and hollow roller bearing the equivalent stress curve ratio.
Among the figure: hole diameter in the middle of 1, the left and right hole 4 of rolling element 2,3 rollers, middle hole 5, frustoconic shape hole 6 cylindrical cavity A bodies-hollow round platform base diameter equal greater than middle hole diameter B body-hollow round platform base diameter
Embodiment
The alternative existing various roller bearings of the structure of dark cave hollow roller bearing, this is comprising solid single-row or multiple row roller bearing, filled circles taper roller bearing, hollow single-row or multiple row roller bearing or the like.Similar to hollow roller bearing, dark cave hollow roller bearing can be assembled into the dark cave hollow roller bearing that preloads and not have the dark cave hollow roller bearing that preloads.The dark cave hollow roller bearing that preloads needs that certain magnitude of interference is arranged between roller and the race ring, and roller is relevant with applied concrete condition with the assembly relation of race ring in the size of magnitude of interference and the assembling.Do not have the dark cave hollow roller bearing that preloads, then do not have above-mentioned magnitude of interference, the assembly relation of roller and race ring depends on applied concrete condition in the assembling.Dark cave hollow roller can be made no outer ring or not have the bearing of inner ring, also can be made into the bearing of no Internal and external cycle.Spacer sleeve during spacer sleeve can not have yet in axially can having between the roller of the dark cave of multiple row hollow roller bearing.Structural type with accompanying drawing 2 is that example is carried out theory analysis.Fig. 8 has provided the The results of a dark cave hollow cylindrical roller bearing.Among the figure, horizontal axis represent Line of contact from the roller axial midpoint to end points along Roller Shaft to length; Vertical shaft is represented equivalent stress (Mpa).The radius of roller R that is calculated is 5.5, effective length L is 5, magnitude of load is 2240N, curve sm00 among the figure, sm05 and sm0484 are respectively solid rollers, hollow rate be 50% hollow roller and a certain group of parameter dark cave hollow roller bearing maximum equivalent along Roller Shaft to the regularity of distribution, as seen from the figure, solid roller bearing and hollow roller bearing all exist boundary stress to concentrate in the end of roller.By curve sm0484 as seen, dark cave hollow roller bearing maximum equivalent distributes all even at the roller middle part, do not have the peak stress that protrudes, and stress constantly descends between middle part and end, then, rise is arranged slightly in the end, but non-boundary stress is concentrated.Same with the logarithm roller, dark cave hollow roller can be avoided " edge effect ".Article three, to be respectively the roller of solid roller 1596MPa, hollow rate 50% be that 1470MPa, dark cave hollow roller are 1115MPa to the maximum value of the equivalent stress more as can be known of the maximum stress value of curve, so dark cave hollow roller bearing maximum equivalent minimum, this illustrates load-carrying properties the best of dark cave hollow roller bearing.
Claims (2)
1, a kind of dark cave hollow roller bearing; It is characterized in that having the hole in the rolling element (1) in the roller bearing, its hole is divided into the left and right hole of roller (2,3) and middle hole (4), and the left and right hole of roller (2,3) communicate with middle hole (4), and is positioned at the two ends in middle hole (4); The left and right hole of roller (2,3) has identical axle center with middle hole (4), and the diameter of bore in its hole, left and right two ends (2,3) is greater than the diameter of middle hole (4).
2, dark cave according to claim 1 hollow cylindrical roller bearing; The structure shape that it is characterized in that the left and right hole of roller (2,3) in the rolling element (1) is: the various combination of frustoconic shape hole (5) or cylindrical cavity (6) or frustoconic shape hole (5) and cylindrical cavity (6) two bodies, the structure shape in middle hole is the hollow cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02247648U CN2560786Y (en) | 2002-08-10 | 2002-08-10 | Deep-hole hollow roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02247648U CN2560786Y (en) | 2002-08-10 | 2002-08-10 | Deep-hole hollow roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2560786Y true CN2560786Y (en) | 2003-07-16 |
Family
ID=33718493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02247648U Expired - Fee Related CN2560786Y (en) | 2002-08-10 | 2002-08-10 | Deep-hole hollow roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2560786Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128202A (en) * | 2011-03-15 | 2011-07-20 | 姚齐水 | Method for improving fatigue resistance of cylindrical roller bearing and elastic composite cylindrical roller bearing |
| CN102472221A (en) * | 2009-08-10 | 2012-05-23 | 罗伯特·博世有限公司 | High-pressure pump |
| CN106151280A (en) * | 2016-08-17 | 2016-11-23 | 常州市武进长江滚针轴承有限公司 | Lubricating type needle bearing |
| CN106438707A (en) * | 2016-11-01 | 2017-02-22 | 重庆大学 | Deep cave honeycomb hole system hollow cylindrical roller bearing |
-
2002
- 2002-08-10 CN CN02247648U patent/CN2560786Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472221A (en) * | 2009-08-10 | 2012-05-23 | 罗伯特·博世有限公司 | High-pressure pump |
| CN102128202A (en) * | 2011-03-15 | 2011-07-20 | 姚齐水 | Method for improving fatigue resistance of cylindrical roller bearing and elastic composite cylindrical roller bearing |
| CN106151280A (en) * | 2016-08-17 | 2016-11-23 | 常州市武进长江滚针轴承有限公司 | Lubricating type needle bearing |
| CN106438707A (en) * | 2016-11-01 | 2017-02-22 | 重庆大学 | Deep cave honeycomb hole system hollow cylindrical roller bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030716 Termination date: 20110810 |