CN203412934U - Needle roller bearing - Google Patents
Needle roller bearing Download PDFInfo
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- CN203412934U CN203412934U CN201320473179.3U CN201320473179U CN203412934U CN 203412934 U CN203412934 U CN 203412934U CN 201320473179 U CN201320473179 U CN 201320473179U CN 203412934 U CN203412934 U CN 203412934U
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- needle roller
- needle
- inner ring
- outer ring
- ring
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Abstract
The utility model provides a needle roller bearing, belongs to the technical field of machinery, and solves the technical problems that the conventional needle roller bearing is short in service life, and the positioning of a needle roller is inaccurate. The needle roller bearing comprises an inner ring, an outer ring, and needle rollers arranged between the inner ring and the outer ring, wherein a narrowing part is arranged at the middle part of each needle roller; a positioning part I corresponding to the narrowing parts of the needle rollers is arranged on the outer side surface of the inner ring, and props against the corresponding narrowing parts; a positioning part II corresponding to the narrowing parts of the needle rollers is arranged on the inner side surface of the outer ring, and props against the corresponding narrowing parts; tungsten metal wear-resistant layers are electroplated on the peripheral surfaces of the needle rollers. The needle roller bearing has the advantages of long service life, accurate needle roller positioning and the like.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of needle bearing.
Background technique
Bearing is the important foundation component of all kinds of mechanized equipments, and its precision, performance, life and reliability play conclusive effect to the precision of main frame, performance, life and reliability.In engineering goods, bearing belongs to high-precision product, not only need the comprehensive support of the subjects theories such as mathematics, physics, and need materials science, heat treatment technology, precision machining and surveying, Numeric Control Technology and effective numerical method and the powerful subjects such as computer technology to serve for it, so bearing is again a product that represents national science and technology strength.
Needle bearing is equipped with thin and long roller, therefore radial structure is compact, when its internal diameter size is identical with other types bearing with load-carrying ability, external diameter is minimum, be specially adapted to the radially restricted supporting structure of installation dimension, tradition needle bearing is due to problems such as assemblage gaps, it is not very accurate causing the location between needle roller and inner ring and outer ring, needle roller between inner ring and outer ring to rock gap larger, friction is serious, and then working life is shorter, adds the size of needle roller own less, wearing and tearing are very big to its Accuracy, for addressing the above problem, design this patent.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist for existing technology, and a kind of needle bearing is provided, and technical problem to be solved in the utility model is: how to make the accurate positioning of needle roller in bearing, the working life of prolongation bearing.
The purpose of this utility model can realize by following technical proposal:
A kind of needle bearing, comprise inner ring, outer ring and be arranged on inner ring and outer ring between needle roller, it is characterized in that, the middle part of described needle roller has a contraction flow region, the outer side surface of described inner ring is provided with the positioning part corresponding with the contraction flow region of each needle roller one, and described positioning part one leans with corresponding contraction flow region; The inner side surface of described outer ring is provided with the positioning part corresponding with the contraction flow region of each needle roller two, and described positioning part two leans with corresponding contraction flow region; The outer circumferential face of described needle roller is electroplate with tungsten abrasion-resistant metal layer.
Its working principle is as follows: in order to improve the stationkeeping ability of needle roller in bearing, improve antiwhip, needle roller in this bearing is provided with a contraction flow region, this contraction flow region is that to take the center line of needle roller be axis, the curve of an indent of take forms as bus rotates a circle, can be respectively with inner ring and outer ring on Yi He positioning part, positioning part two against, thereby make needle roller accurate positioning, in using process, can there is not loosening and skew; In order to extend the working life of bearing, on the outer circumferential face of needle roller, be electroplate with one deck tungsten abrasion-resistant metal layer, tungsten metal has extremely strong wear-resisting property, and the size that can extend needle roller keeps the phase, thereby extends the working life of bearing.
In above-mentioned needle bearing, the outer side surface of described inner ring is provided with some the restraining grooves one coaxial with described interior ring through hole, and described restraining groove one is corresponding one by one with described needle roller; The inner side surface of described outer ring is provided with some the restraining grooves two coaxial with described interior ring through hole, and described restraining groove two is corresponding one by one with described needle roller.When needle roller rolls between inner ring and outer ring, be subject to the effect of restraining groove one and restraining groove two, the span between each needle roller remains unchanged, and between each needle roller, also can not come in contact, and keeps bearing mass distribution uniformity, and the lubrication effect of lubricant oil also improves.
In above-mentioned needle bearing, the inner side surface of described inner ring is provided with some splines one, and described spline one is evenly distributed on the inner side surface of described inner ring.Bearing when mounted, need to be fixed inner ring and axial workpiece, fixed in order to make between axial workpiece and inner ring, is provided with spline one on the inner side surface of inner ring.
In above-mentioned needle bearing, the outer side surface of described outer ring is provided with some splines two, and described spline two is evenly distributed on the outer side surface of described outer ring.Bearing when mounted, need to be fixing by outer ring and cabinet parts etc., fixed in order to make between the parts such as casing and outer ring, is provided with spline two on the outer side surface of outer ring.
In above-mentioned needle bearing, described spline one and spline two respectively have four.
Compared with prior art, the utlity model has following advantage:
1, in order to improve the stationkeeping ability of needle roller in bearing, improve antiwhip, needle roller in this bearing is provided with a contraction flow region, this contraction flow region is that to take the center line of needle roller be axis, the curve of an indent of take forms as bus rotates a circle, can be respectively with inner ring and outer ring on Yi He positioning part, positioning part two against, thereby make needle roller accurate positioning, in using process, can there is not loosening and skew.
2, in order to extend the working life of bearing, on the outer circumferential face of needle roller, be electroplate with one deck tungsten abrasion-resistant metal layer, tungsten metal has extremely strong wear-resisting property, and the size that can extend needle roller keeps the phase, thereby extends the working life of bearing.
When 3, needle roller rolls between inner ring and outer ring, be subject to the effect of restraining groove one and restraining groove two, the span between each needle roller remains unchanged, and between each needle roller, also can not come in contact, keep bearing mass distribution uniformity, the lubrication effect of lubricant oil also improves.
Accompanying drawing explanation
Fig. 1 is the perspective view of this needle bearing.
Fig. 2 is the sectional view of this needle bearing.
Fig. 3 is the perspective view of needle roller in this needle bearing.
Fig. 4 is that this needle bearing takes out the plane structure schematic diagram after dust cover.
In figure, 1, inner ring; 2, outer ring; 3, needle roller; 41, contraction flow region; 42, positioning part one; 43, positioning part two; 5, wearing layer; 61, restraining groove one; 62, restraining groove two; 71, spline one; 72, spline two.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, this needle bearing comprise inner ring 1, outer ring 2 and be arranged on inner ring 1 and outer ring 2 between needle roller 3, the middle part of needle roller 3 has a contraction flow region 41, the outer side surface of inner ring 1 is provided with the positioning part corresponding with the contraction flow region 41 of each needle roller 31, and positioning part 1 leans with corresponding contraction flow region 41; The inner side surface of outer ring 2 is provided with the positioning part corresponding with the contraction flow region 41 of each needle roller 32 43, and positioning part 2 43 leans with corresponding contraction flow region 41; The outer circumferential face of needle roller 3 is electroplate with tungsten abrasion-resistant metal layer 5, and the outer side surface of inner ring 1 is provided with some the restraining grooves one 61 coaxial with inner ring 1 through hole, and restraining groove 1 is corresponding one by one with needle roller 3; The inner side surface of outer ring 2 is provided with some the restraining grooves two 62 coaxial with inner ring 1 through hole, restraining groove 2 62 is corresponding one by one with needle roller 3, when needle roller 3 rolls between inner ring 1 and outer ring 2, be subject to the effect of restraining groove 1 and restraining groove 2 62, span between each needle roller 3 remains unchanged, between each needle roller 3, also can not come in contact, keep bearing mass distribution uniformity, the lubrication effect of lubricant oil also improves.
As shown in Figure 1, the inner side surface of inner ring 1 is provided with some splines 1, and spline 1 is evenly distributed on the inner side surface of inner ring 1.Bearing when mounted, inner ring 1 and axial workpiece need to be fixed, fixed in order to make between axial workpiece and inner ring 1, on the inner side surface of inner ring 1, be provided with spline 1, the outer side surface of outer ring 2 is provided with some splines 2 72, spline 2 72 is evenly distributed on the outer side surface of outer ring 2, bearing when mounted, need to outer ring 2 and cabinet parts etc. are fixing, fixed in order to make between the parts such as casing and outer ring 2, on the outer side surface of outer ring 2, be provided with spline 2 72, spline 1 and spline 2 72 respectively have four.
Working principle of the present utility model: in order to improve the stationkeeping ability of needle roller 3 in bearing, improve antiwhip, needle roller 3 in this bearing is provided with a contraction flow region 41, this contraction flow region 41 is that to take the center line of needle roller 3 be axis, the curve of an indent of take forms as bus rotates a circle, can be respectively with inner ring 1 and outer ring 2 on positioning part 1 and positioning part 2 43 against, thereby make needle roller 3 accurate positionings, in using process, can there is not loosening and skew; In order to extend the working life of bearing, on the outer circumferential face of needle roller 3, be electroplate with one deck tungsten abrasion-resistant metal layer 5, tungsten metal has extremely strong wear-resisting property, and the size that can extend needle roller 3 keeps the phase, thereby extends the working life of bearing.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. a needle bearing, comprise inner ring (1), outer ring (2) and be arranged on inner ring (1) and outer ring (2) between needle roller (3), it is characterized in that, the middle part of described needle roller (3) has a contraction flow region (41), the outer side surface of described inner ring (1) is provided with the positioning part corresponding with the contraction flow region (41) of each needle roller (3) (42), and described positioning part one (42) leans with corresponding contraction flow region (41); The inner side surface of described outer ring (2) is provided with the positioning part corresponding with the contraction flow region (41) of each needle roller (3) two (43), and described positioning part two (43) leans with corresponding contraction flow region (41); The outer circumferential face of described needle roller (3) is electroplate with tungsten abrasion-resistant metal layer (5).
2. needle bearing according to claim 1, is characterized in that, the outer side surface of described inner ring (1) is provided with some the restraining grooves one (61) coaxial with described inner ring (1) through hole, and described restraining groove one (61) is corresponding one by one with described needle roller (3); The inner side surface of described outer ring (2) is provided with some the restraining grooves two (62) coaxial with described inner ring (1) through hole, and described restraining groove two (62) is corresponding one by one with described needle roller (3).
3. needle bearing according to claim 1 and 2, is characterized in that, the inner side surface of described inner ring (1) is provided with some splines one (71), and described spline one (71) is evenly distributed on the inner side surface of described inner ring (1).
4. needle bearing according to claim 3, is characterized in that, the outer side surface of described outer ring (2) is provided with some splines two (72), and described spline two (72) is evenly distributed on the outer side surface of described outer ring (2).
5. needle bearing according to claim 4, is characterized in that, described spline one (71) and spline two (72) respectively have four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473179.3U CN203412934U (en) | 2013-08-05 | 2013-08-05 | Needle roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473179.3U CN203412934U (en) | 2013-08-05 | 2013-08-05 | Needle roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412934U true CN203412934U (en) | 2014-01-29 |
Family
ID=49975823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320473179.3U Expired - Fee Related CN203412934U (en) | 2013-08-05 | 2013-08-05 | Needle roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353193A (en) * | 2016-10-08 | 2017-01-25 | 大连理工大学 | Novel marine engineering flexible tube cable tension torsion combined test device |
-
2013
- 2013-08-05 CN CN201320473179.3U patent/CN203412934U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353193A (en) * | 2016-10-08 | 2017-01-25 | 大连理工大学 | Novel marine engineering flexible tube cable tension torsion combined test device |
| CN106353193B (en) * | 2016-10-08 | 2019-08-09 | 大连理工大学 | A kind of novel ocean engineering flexibility umbilical tension and torsion test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG DELMAR BEARING CO., LTD. Free format text: FORMER OWNER: ZHEJIANG YAKEER BEARING CO., LTD. Effective date: 20140507 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 317523 TAIZHOU, ZHEJIANG PROVINCE TO: 317000 TAIZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140507 Address after: 317000 Beiyang Town, Taizhou, Zhejiang, China Patentee after: ZHEJIANG DELMAR BEARING CO., LTD. Address before: Taizhou City, Zhejiang province 317523 City Zeguo town of Wenling Zhen Shan Xia Chen Cun Changhong Road No. 358 Patentee before: Zhejiang subfamily that bearing 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: 20140129 Termination date: 20160805 |