CN204553551U - High radial carrying completely fills needle bearing - Google Patents
High radial carrying completely fills needle bearing Download PDFInfo
- Publication number
- CN204553551U CN204553551U CN201520251530.3U CN201520251530U CN204553551U CN 204553551 U CN204553551 U CN 204553551U CN 201520251530 U CN201520251530 U CN 201520251530U CN 204553551 U CN204553551 U CN 204553551U
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- CN
- China
- Prior art keywords
- bearing
- needle
- outer ring
- ring raceway
- roller
- 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.)
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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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/70—Diameters; Radii
- F16C2240/80—Pitch circle diameters [PCD]
- F16C2240/82—Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD
- F16C2240/84—Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD with full complement of balls or rollers, i.e. sum of clearances less than diameter of one rolling element
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to technical field of bearings, is specifically related to a kind of needle bearing, particularly completely fills needle bearing.The technical solution adopted in the utility model is: a kind of high radial carrying completely fills needle bearing, include bearing outer ring, bearing inner race and needle roller, needle roller is between bearing inner race and bearing outer ring, bearing outer ring and bearing inner race are provided with the outer ring raceway and inner ring raceway that roll for needle roller, between outer ring raceway and inner ring raceway, full type is equipped with needle roller, described inner ring raceway is the annular elliptic roller track of radial cross-sectional shape ovalize, the annular major axis of elliptic roller track is greater than 1 with the ratio of minor axis, and being less than or equal to 1.002, outer ring raceway is circular raceway.The utility model achieves needle bearing under space and structure constraint situation, effectively increases bearing capacity, and it is even to have load diatibution, long service life, and structure is simple, advantage applied widely.
Description
Technical field
The utility model relates to technical field of bearings, is specifically related to a kind of needle bearing, particularly completely fills needle bearing.
Background technique
Needle roller
bearing(needle bearing) is band
cylinderroller
roller bearing, its diameter relatively, roller is thin but also length not only, this
rollerbe called needle roller.Needle bearing has can bear larger radial load, run certain feature such as to move axially, and every field has and uses widely.
For ensureing high-mechanic requirement, existing method is by increasing needle roller quantity, as the structure of full dress needle roller, namely existingly completely fills needle bearing; As shown in Figure 1, the existing needle bearing structure of completely filling is: the needle roller including bearing inner race, bearing outer ring and be completely loaded between bearing inner race and bearing outer ring, on the inner peripheral surface of bearing outer ring and the outer peripheral surface of bearing inner race be provided with the outer ring raceway and inner ring raceway that roll for needle roller; Inside and outside circle raceway is circle.The full dress needle bearing of existing structure, when bearing radial load, only have the needle roller in as shown in Figure 2 90 ° of regions to work, and the needle roller of centre bears maximum load, the needle roller bearing load of both sides successively decreases successively.
For some slow-speed of revolution, in heavy radial load situation, the existing needle bearing that completely fills is owing to being subject to the restriction of bearing size, needle roller limited amount, still the problem that cannot meet radial load requirement can be there is, and load diatibution suffered by needle roller is uneven, under larger radial load, there is the danger crushed in middle needle roller.
Summary of the invention
For the deficiency that prior art exists, it is stronger that the purpose of this utility model is to provide a kind of radial bearing capacity, and load diatibution is even, long service life, and structure is simple, full dress needle bearing applied widely.
For achieving the above object, the utility model provides following technological scheme: a kind of high radial carrying completely fills needle bearing, include bearing outer ring, bearing inner race and needle roller, needle roller is between bearing inner race and bearing outer ring, bearing outer ring and bearing inner race are provided with the outer ring raceway and inner ring raceway that roll for needle roller, between outer ring raceway and inner ring raceway, full type is equipped with needle roller, it is characterized in that: described inner ring raceway is the annular elliptic roller track of radial cross-sectional shape ovalize, the annular major axis of elliptic roller track is greater than 1 with the ratio of minor axis, and be less than or equal to 1.002, outer ring raceway is circular raceway.
By adopting technique scheme, ensure needle roller energy proper motion, when bearing radial load, needle roller in more large regions is worked, in equal number needle roller situation, there is larger radial bearing capacity, simultaneously, this needle bearing, although middle needle roller also bears maximum load, but the load that the needle roller of both sides is shared enlarges markedly, make the larger reduction of load that middle needle roller bears, the distribution of load is more even, also the danger that needle roller crushes can not be there is in bearing when bearing larger load, long service life, and it is just out of shape the inner ring raceway of bearing inner race, there is better versatility.
The utility model is set to further: the major axis of described annular elliptic roller track is 1.001-1.002 with the ratio of minor axis.Under this vibrational power flow, can better ensure that needle roller motion stabilization is reliable, and bearing capacity obtains maximum embodiment.
The utility model is set to further: described bearing inner race is provided with assembling aligning structure.Under this vibrational power flow, realize accurately contraposition being installed, ensure that the minor axis of bearing inner race annular elliptic roller track is positioned at loading direction all the time, ensure that bearing uses reliable.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is existing needle bearing structural representation;
Fig. 2 is existing needle bearing carrying free-body diagram;
Fig. 3 is that the carrying of the utility model specific embodiment high radial completely fills needle bearing structural representation;
Fig. 4 is that the carrying of the utility model specific embodiment high radial completely fills needle bearing radial cross-section;
Fig. 5 is that the carrying of the utility model specific embodiment high radial completely fills needle bearing carrying free-body diagram.
Embodiment
See accompanying drawing 3, accompanying drawing 4, a kind of high radial carrying disclosed in the utility model completely fills needle bearing, include bearing outer ring 1, bearing inner race 2 and needle roller 3, needle roller 3, between bearing inner race 2 and bearing outer ring 1, bearing outer ring 1 and bearing inner race 2 is provided with the outer ring raceway 11 and inner ring raceway 21 that roll for needle roller 3; Described inner ring raceway 21 is the annular elliptic roller track 21 of radial cross-sectional shape ovalize, and the major axis 2a of annular elliptic roller track is greater than 1 with the ratio of minor axis 2b, and is less than or equal to 1.002, and described outer ring raceway 11 is circular raceway.During this tool is implemented, the major axis 2a of described annular elliptic roller track 21 is 1.001-1.002 with the ratio of minor axis 2b.
High radial carrying of the present utility model completely fills needle bearing, and as shown in Figure 5, when bearing radial load, the needle roller with 120 ° of regions participates in carrying, significantly improves radial bearing capacity; And this needle bearing, although middle needle roller also bears maximum load, but the load that the needle roller of both sides is shared enlarges markedly, make the larger reduction of load that middle needle roller bears, the distribution of load is more even, the danger that needle roller crushes also can not occur, long service life when bearing bears larger load, and it is just out of shape the inner ring raceway of bearing inner race, has better versatility.
Be that under the annular elliptic roller track design of radial cross-sectional shape ovalize, when running up, noise can increase, and will ensure that the minor axis of annular elliptic roller track is positioned at loading direction all the time by inner ring raceway; Therefore of the present utility modelly completely fill that needle bearing is mainly used in low speed, heavy duty and bearing inner race are fixed, the operating mode of bearing outer ring rotation.And under designing under the major axis 2a of annular elliptic roller track and the ratio of minor axis 2b, under improving bearing high radial bearing capacity, ensure that bearing operation is stablized, avoid needle roller stuck phenomenon.
For ensureing that the minor axis of bearing inner race annular elliptic roller track is positioned at loading direction all the time, ensure that bearing uses reliable; Described bearing inner race 2 is provided with assembling aligning structure (not shown).Assembling aligning structure can be the contraposition breach be arranged on bearing inner race, contraposition groove, and locating slot etc.
Claims (3)
1. a high radial carrying completely fills needle bearing, include bearing outer ring, bearing inner race and needle roller, needle roller is between bearing inner race and bearing outer ring, bearing outer ring and bearing inner race are provided with the outer ring raceway and inner ring raceway that roll for needle roller, between outer ring raceway and inner ring raceway, full type is equipped with needle roller, it is characterized in that: described inner ring raceway is the annular elliptic roller track of radial cross-sectional shape ovalize, the annular major axis of elliptic roller track is greater than 1 with the ratio of minor axis, and being less than or equal to 1.002, outer ring raceway is circular raceway.
2. high radial carrying completely fills needle bearing according to claim 1, it is characterized in that: the major axis of described annular elliptic roller track is 1.001-1.002 with the ratio of minor axis.
3. according to claim 1 or 2, high radial carrying completely fills needle bearing, it is characterized in that: described bearing inner race is provided with assembling aligning structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251530.3U CN204553551U (en) | 2015-04-23 | 2015-04-23 | High radial carrying completely fills needle bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251530.3U CN204553551U (en) | 2015-04-23 | 2015-04-23 | High radial carrying completely fills needle bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553551U true CN204553551U (en) | 2015-08-12 |
Family
ID=53828666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520251530.3U Active CN204553551U (en) | 2015-04-23 | 2015-04-23 | High radial carrying completely fills needle bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204553551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907392A (en) * | 2017-05-10 | 2017-06-30 | 捷颂（上海）传动科技有限公司 | A kind of cylinder needle roller combination bearing |
-
2015
- 2015-04-23 CN CN201520251530.3U patent/CN204553551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907392A (en) * | 2017-05-10 | 2017-06-30 | 捷颂（上海）传动科技有限公司 | A kind of cylinder needle roller combination bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |