CN112460141A - Thrust needle roller bearing and retainer - Google Patents
Thrust needle roller bearing and retainer Download PDFInfo
- Publication number
- CN112460141A CN112460141A CN202011226552.6A CN202011226552A CN112460141A CN 112460141 A CN112460141 A CN 112460141A CN 202011226552 A CN202011226552 A CN 202011226552A CN 112460141 A CN112460141 A CN 112460141A
- Authority
- CN
- China
- Prior art keywords
- raceway ring
- retainer
- needle roller
- clearance
- ball 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
Images
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
- 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
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
-
- 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
-
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a thrust needle roller bearing and a retainer, which belong to the technical field of bearings and comprise a first raceway ring, a second raceway ring, a needle roller and a retainer, wherein the opening side of the bearing is taken as the inner side, and a gap sealing structure and/or a labyrinth sealing structure are/is arranged between the retainer and the inner side and/or the outer side of the first raceway ring and the second raceway ring. The invention improves the two end structures of the retainer and the matching relation between the retainer and the raceway ring, realizes the sealing of the thrust needle roller bearing, improves the service performance of the thrust needle roller bearing and prolongs the service life of the thrust needle roller bearing.
Description
Technical Field
The invention relates to the field of needle roller bearings, in particular to a thrust needle roller bearing and a retainer.
Background
The needle roller bearing has a small cross section, so that the radial structure is compact, and the needle roller bearing has high load bearing capacity, so that the needle roller bearing is particularly suitable for a supporting structure with limited radial installation size.
The structure of the existing thrust needle roller bearing is disclosed in chinese patent CN201120209217.5, and it includes a first raceway ring, a second raceway ring, a needle roller and a retainer. The first raceway ring and the second raceway ring are respectively arranged on the inner side and the outer side of the roller pin and the retainer, and the raceway of the first raceway ring and the raceway of the second raceway ring are respectively contacted with the roller pin.
However, since the cross section of the needle roller thrust bearing is small, it is difficult to design a sealing structure, fine substances such as dust and particles from the outside easily enter the inside of the bearing, and the lubricating oil in the inside of the bearing easily escapes to the outside, so that the service life of the bearing is affected.
In addition, the rolling rings and the retainer of the existing thrust needle bearing are in a separated state, and sorting measurement is needed to ensure the required assembly height during use.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the needle roller thrust bearing with the sealing function by carrying out innovative design on the needle roller thrust bearing, solves the problem that the existing needle roller thrust bearing cannot be sealed, and further overcomes the defects of inconvenient structure separation and assembly.
In order to achieve the above object, the needle roller thrust bearing of the present invention has the following structure: the bearing comprises a first raceway ring, a second raceway ring, a roller pin and a retainer, wherein one side of an opening of the bearing is taken as the inner side, and a clearance sealing structure and/or a labyrinth sealing structure are/is arranged between the retainer and the inner side and/or the outer side of the first raceway ring and the second raceway ring.
According to the technical scheme, the sealing structures are arranged between the retaining frame and the inner side and the outer side of the first raceway ring and the inner side and the outer side of the second raceway ring, so that the sealing effect of the thrust needle roller bearing is improved through the inner/outer sealing structures, the normal operation performance of the thrust needle roller bearing is prevented from being influenced by the entering of foreign matters in the long-term use process, and the service life of the bearing is prolonged.
The invention further provides the following: the clearance type sealing structure is as follows: the end of the retainer, which is matched with the inner sides of the first raceway ring and the second raceway ring, is provided with a first extension part which extends towards the first raceway ring and the second raceway ring, and the first extension part is in clearance fit with the first raceway ring and the second raceway ring.
Above-mentioned technical scheme provides a seal structure convenient to processing and assembly, and it has reduced the tip of holder and the radial clearance between first raceway circle and the second raceway circle through providing the extension, increases the inside hindrance of foreign matter entering bearing seal circle, reduces the entering of external foreign matter, reduces the lubricating oil loss, prolongs the life of bearing.
And the clearance type sealing structure only needs to change the structure of the retainer without changing the structure of the raceway ring.
In order to ensure the sealing effect and facilitate the processing, the invention is further provided with the following components: the first extension portion is arranged along the axial direction.
In order to ensure the sealing effect, the invention further comprises the following steps: the clearance is 0.04-0.1 mm.
The invention further provides the following: the labyrinth seal structure is as follows: one end of the retainer, which is matched with the inner sides of the first raceway ring and the second raceway ring, is provided with a second extending part which extends towards the first raceway ring and the second raceway ring, and the end part of the second extending part is provided with a groove/a convex part which is matched with the concave-convex clearance of the first raceway ring and the concave-convex clearance of the second raceway ring.
Through the technical scheme, the sealing structure with the simple structure and the good sealing effect is provided, the labyrinth sealing is realized through concave-convex matching, and compared with a clearance type sealing structure, the sealing structure has the advantages that the sealing effect is more outstanding, and the sealing structure is suitable for being designed on the outer side.
In order to ensure the sealing effect and facilitate the processing, the invention is further provided with the following components: the second extension portion is disposed in an axial direction.
In order to ensure the sealing effect and facilitate the processing, the invention is further provided with the following components: the grooves/protrusions are arranged radially.
In order to ensure the sealing effect, the invention further comprises the following steps: the gap is 0.02-0.08 mm.
Another object of the present invention is to provide a cage, which has the following structure: the inner end and the outer end of the retainer are both provided with extension parts which are axially arranged.
The retainer structure is further provided with the following components: the outer end of the retainer is provided with a convex part facing inwards in the radial direction.
The retainer structure is further provided with the following components: the inner end of the retainer is provided with a convex part facing inwards in the radial direction.
The invention has the following beneficial effects:
firstly, the invention realizes the sealing of the thrust needle roller bearing by specially designing the detailed structures of the raceway ring and the retainer, improves the service performance of the thrust needle roller bearing and prolongs the service life of the thrust needle roller bearing.
The retainer can be kept with the first raceway ring and the second raceway ring to form an inseparable whole by designing a concave-convex matched labyrinth seal matching structure, so that the bearing is integrated and only needs to be used, and the required assembly height is ensured without separation measurement, thereby facilitating practical use.
Drawings
Fig. 1 is an overall schematic view of an embodiment 1 of the present invention.
FIG. 2 is an enlarged view of part I of the present invention.
Fig. 3 is a partial structural schematic diagram of an embodiment of the present invention.
Fig. 4 is a schematic view of a labyrinth seal structure according to an embodiment of the present invention.
Fig. 5 is a schematic view of a clearance type sealing structure according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 7 is a schematic structural diagram of embodiment 4 of the present invention.
Reference numerals: 1-raceway ring, 2-rolling needle, 3-retainer, 31-sealing head I, 32-sealing head II, 301-extension part II, 302-protrusion part, 303-extension part I, 11-protrusion part I, 12-groove, 13-protrusion part II.
Detailed Description
The clearance type sealing structure is shown in fig. 5, a first sealing head 31 is arranged at the inner end of the retainer 3, the first sealing head 31 is provided with a first extending portion 303 facing the first raceway ring 1 and the second raceway ring 1 respectively, the first extending portion 303 is provided with a radial matching surface, the matching surfaces are in clearance fit with the first raceway ring 1 and the second raceway ring 1 respectively, and the gap is preferably 0.04-0.1 mm. In this embodiment, the first extension 303 is disposed along the axial direction for easy processing.
As shown in fig. 4, the labyrinth seal structure has a second seal head 32 at the outer end of the retainer 3, the second seal head 32 has a second extension 301 facing the first raceway ring 1 and the second raceway ring 1, respectively, and the end of the extension at both sides has a protrusion 302 protruding inward. Correspondingly, the outer side ends of the first raceway ring 1 and the second raceway ring 1 are provided with concave-convex structures formed by sequentially connecting a first protrusion 11, a groove 12 and a second protrusion 13, the convex part 302 of the second sealing head 32 is inserted into the groove 12 of the concave-convex structures, the sealing head is in concave-convex clearance fit with the first raceway ring 1 and the second raceway ring 1, and the clearance is preferably 0.02-0.08 mm. Similarly, in the present embodiment, the second extension 301 is also disposed in the axial direction, and the convex portion 302 is also disposed in the radial direction.
Embodiment 4 as shown in fig. 7, in this embodiment, the two sealing heads 32 as described in embodiment 1 are provided at the outer ends of the retainer 3.
Embodiment 5 this embodiment provides a thrust needle roller 2 bearing including the cage 3 structure as provided in embodiment 3.
Embodiment 6 this embodiment provides a needle roller thrust bearing 2, which includes the structure of the cage 3 as provided in embodiment 4, in order to adapt to the second seal head 32, in this embodiment, the concave-convex structures for concave-convex matching with the second seal head 32 described in embodiment 1 are provided on the inner sides and the outer sides of the first raceway ring 1 and the second raceway ring 1.
In conclusion, the invention can effectively improve the sealing performance and prolong the sealing structure of the thrust needle roller 2 bearing structure on the premise of ensuring the original function advantages of the thrust needle roller without changing by improving the structures at the two ends of the retainer 3 and the matching relation between the retainer and the raceway ring 1.
Claims (10)
1. A thrust needle bearing characterized in that: the bearing comprises a first raceway ring, a second raceway ring, a roller pin and a retainer, wherein one side of an opening of the bearing is taken as the inner side, and a clearance sealing structure and/or a labyrinth sealing structure are/is arranged between the retainer and the inner side and/or the outer side of the first raceway ring and the second raceway ring.
2. The thrust ball bearing according to claim 1, wherein: the clearance type sealing structure is as follows: the end of the retainer, which is matched with the inner sides of the first raceway ring and the second raceway ring, is provided with a first extension part which extends towards the first raceway ring and the second raceway ring, and the first extension part is in clearance fit with the first raceway ring and the second raceway ring.
3. The thrust ball bearing according to claim 2, wherein: the first extension portion is arranged along the axial direction.
4. A thrust ball bearing according to claim 2 or 3, wherein: the clearance is 0.04-0.1 mm.
5. A thrust ball bearing according to claim 1 or 2, wherein: the labyrinth seal structure is as follows: one end of the retainer, which is matched with the inner sides of the first raceway ring and the second raceway ring, is provided with a second extending part which extends towards the first raceway ring and the second raceway ring, and the end part of the second extending part is provided with a groove/a convex part which is matched with the concave-convex clearance of the first raceway ring and the concave-convex clearance of the second raceway ring.
6. The thrust ball bearing according to claim 5, wherein: the second extension portion is disposed in an axial direction.
7. The thrust ball bearing according to claim 6, wherein: the grooves/protrusions are arranged radially.
8. The thrust ball bearing according to claim 5, wherein: the gap is 0.02-0.08 mm.
9. A retainer is structurally characterized in that: the inner end and the outer end of the retainer are both provided with extension parts which are axially arranged.
10. The cage of claim 9, wherein: the outer end of the retainer is provided with a convex part facing inwards in the radial direction; and/or the inner end of the retainer is provided with a convex part facing inwards in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226552.6A CN112460141A (en) | 2020-11-05 | 2020-11-05 | Thrust needle roller bearing and retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226552.6A CN112460141A (en) | 2020-11-05 | 2020-11-05 | Thrust needle roller bearing and retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112460141A true CN112460141A (en) | 2021-03-09 |
Family
ID=74826202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011226552.6A Pending CN112460141A (en) | 2020-11-05 | 2020-11-05 | Thrust needle roller bearing and retainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460141A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6183369B1 (en) * | 1996-06-05 | 2001-02-06 | Gkn Automotive Ag | Sealing assembly for a cross member unit for universal joints |
| JP2004204893A (en) * | 2002-12-24 | 2004-07-22 | Koyo Seiko Co Ltd | Thrust bearing |
| JP2012193858A (en) * | 2012-07-10 | 2012-10-11 | Nsk Ltd | Cage for thrust needle bearing and thrust needle bearing |
| CN202628798U (en) * | 2012-05-17 | 2012-12-26 | 陆连运 | Needle bearing capable of improving assembling efficiency |
| CN203114897U (en) * | 2013-03-08 | 2013-08-07 | 山西新环橡塑制品有限公司 | Automobile sliding bearing |
| CN205533766U (en) * | 2016-04-29 | 2016-08-31 | 宁波达尔机械科技有限公司 | Novel deep groove ball bearing |
| CN210799726U (en) * | 2019-08-12 | 2020-06-19 | 新昌县大市聚镇伟盛轴承厂 | Combined plane thrust needle roller bearing |
-
2020
- 2020-11-05 CN CN202011226552.6A patent/CN112460141A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6183369B1 (en) * | 1996-06-05 | 2001-02-06 | Gkn Automotive Ag | Sealing assembly for a cross member unit for universal joints |
| JP2004204893A (en) * | 2002-12-24 | 2004-07-22 | Koyo Seiko Co Ltd | Thrust bearing |
| CN202628798U (en) * | 2012-05-17 | 2012-12-26 | 陆连运 | Needle bearing capable of improving assembling efficiency |
| JP2012193858A (en) * | 2012-07-10 | 2012-10-11 | Nsk Ltd | Cage for thrust needle bearing and thrust needle bearing |
| CN203114897U (en) * | 2013-03-08 | 2013-08-07 | 山西新环橡塑制品有限公司 | Automobile sliding bearing |
| CN205533766U (en) * | 2016-04-29 | 2016-08-31 | 宁波达尔机械科技有限公司 | Novel deep groove ball bearing |
| CN210799726U (en) * | 2019-08-12 | 2020-06-19 | 新昌县大市聚镇伟盛轴承厂 | Combined plane thrust needle roller bearing |
Non-Patent Citations (1)
| Title |
|---|
| 王桂珍等: "《汽车机械基础》", 31 August 2018, 北京理工大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101681270B1 (en) | Sealing structure of wheel bearing for vehicle | |
| JPS62155329A (en) | Seal for machine component | |
| CN201428739Y (en) | Sealing self-aligning roller bearing | |
| US20130051719A1 (en) | Double-Row Angular Ball Bearing | |
| US6817769B2 (en) | Roller bearing having high performance bearing seal and cartridge | |
| CN112460141A (en) | Thrust needle roller bearing and retainer | |
| FR2548297A1 (en) | Roller-retaining cage for rollers for rolling-contact bearings | |
| CN208024715U (en) | Biserial closed type taper roller roller bearing | |
| CN212177688U (en) | Bearing sealing device | |
| CN112160984A (en) | Axle box bearing for high-speed train | |
| US8596874B2 (en) | Bearing in irregular shaped housings | |
| CN108331835A (en) | Biserial closed type taper roller roller bearing | |
| CN217029672U (en) | High-precision rolling bearing | |
| CN219549363U (en) | Double-row tapered roller bearing | |
| CN220828434U (en) | Novel heavy-duty cylindrical roller bearing | |
| JP2009024807A (en) | Sealing device | |
| CN110513391A (en) | The two sides for having O-ring to pre-tighten seals double outer rings long axis two-row ball bearing | |
| CN220523101U (en) | Rolling bearing | |
| CN218510004U (en) | Centripetal self-aligning bearing optional sealing assembly | |
| CN218207463U (en) | Double-row high-load bearing | |
| CN213478950U (en) | Non-contact sealing structure for bearing | |
| CN212079933U (en) | Full complement long cylindrical roller bearing with high dust-proof and sealing performance | |
| CN214887885U (en) | Improved lower bearing assembly structure suitable for medium-sized submersible sewage pump | |
| CN216478440U (en) | Sealing structure of spiral spring bearing | |
| CN220890811U (en) | Grease-proof dust-proof rolling bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210309 |
|
| RJ01 | Rejection of invention patent application after publication |