CN202227988U - Rolling-sliding compound bearing - Google Patents
Rolling-sliding compound bearing Download PDFInfo
- Publication number
- CN202227988U CN202227988U CN2011203344474U CN201120334447U CN202227988U CN 202227988 U CN202227988 U CN 202227988U CN 2011203344474 U CN2011203344474 U CN 2011203344474U CN 201120334447 U CN201120334447 U CN 201120334447U CN 202227988 U CN202227988 U CN 202227988U
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- bearing
- slide block
- rolling
- slide
- sliders
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Abstract
The utility model relates to a rolling-sliding compound bearing suitable to use under the working conditions of heavy load and high revolving speed. The bearing comprises an inner solid of revolution, an outer solid of revolution, sliders and rolling bodies, wherein the sliders and the rolling bodies are arranged in an annular rolling channel groove; and sliding sleeves are arranged between the inner solid of revolution and the sliders and rolling bodies. The bearing is characterized in that oil wedge planes are arranged on one side or two sides of outer circular arc surfaces of the sliders. The bearing has the following beneficial effects: the lubrication conditions among the operating components are adjusted by arranging the plane oil wedges to adjust the relative sliding speeds among the components; wear of the bearing parts is reduced, thus improving the bearing capability of the rolling-sliding bearing and prolonging the life of the rolling-sliding bearing; as relative sliding exists between the sliders and the outer solid of revolution, the lubricants between the oil wedge planes and the outer solid of revolution can better seep into the contact surfaces of the outer circular arc surfaces of the sliders and the outer solid of revolution to form oil films, thus improving the lubrication conditions of the contact surfaces of the outer circular arc surfaces of the sliders and the outer solid of revolution; and the heat generated by friction is reduced, the bearing temperature is reduced and the bearing capability of the rolling-sliding bearing is further improved and the life of the rolling-sliding bearing is further prolonged.
Description
Technical field
The utility model relates to a kind of roll-slide combined bearing of under heavy load, high rotating speed operating mode, using of being suitable for, and this bearing is particularly suitable for as oil, natural gas, the mine drilling well bearing with rock bit, is the improvement to existing skid bearing.
Technical background
Existing bearing roughly is divided three classes, i.e. sliding bearing, rolling bearing, roll-slide combined bearing.
The sliding bearing loaded area is big, can bear heavy duty, but the secondary friction factor of bearing friction is big, and the frictional heating rate is high, under the relatively poor situation of lubricated and cooling condition, and the operation of suitable higher rotation speed.Contact between the friction pair of rolling bearing is the contact of higher pair dotted line, and friction factor is little, and the frictional heat rate is low, can bear high rotating speed, but because of it is the dotted line contact, hertz stress is high, is not suitable under the operating mode of heavy duty or impact, using.
To the problems referred to above, patent CN01212693.4 has proposed a kind of roll-slide combined bearing.This bearing has been drawn sliding bearing, rolling bearing design feature separately, can bear higher load and rotating speed simultaneously, has satisfied market demand to a great extent.But according to single test result in the bearing chamber, the abrasion condition of skid bearing pair is: the gear wheel brearing bore: the no obvious polishing scratch in surface; Slide block: exterior arc surface does not have obvious polishing scratch, and inner arc surface has slight polishing scratch, and there is polishing scratch two sides; Roller: there is slight polishing scratch on the surface; Sliding sleeve: external cylindrical surface has slight polishing scratch, and inner cylinder face has obvious polishing scratch; Axle journal: stress surface has obvious polishing scratch.
From the abrasion condition analysis of bearing parts, the wearing and tearing of bearing parts are unbalanced, and wearing and tearing the most serious is sliding sleeve inner cylinder face and axle journal, the slight or not wearing and tearing of other surface abrasion.Speed of related movement unreasonable distribution between this each part of this bearing of explanation, slide block is minimum with respect to the relative sliding velocity of gear wheel endoporus, and slide block is very little with respect to the relative sliding velocity of sliding sleeve, and sliding sleeve is very big with respect to the relative sliding velocity of axle journal.This phenomenon is disadvantageous for the supporting capacity and the life-span of improving the skid bearing.
Summary of the invention
The utility model technical problem to be solved is the deficiency that exists to above-mentioned prior art and provides a kind of relative velocity that can make each running gear of bearing to be tending towards balanced roll-slide combined bearing, with the supporting capacity and the life-span of further raising roll-slide combined bearing.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is: include slide block and rolling element in interior revolving body, external gyrorotor, the ring raceway groove; Between interior revolving body and slide block, rolling element, be provided with sliding sleeve, its difference is to be provided with the oil film wedge plane in the exterior arc surface one or both sides of slide block.
Press such scheme, be provided with the oil film wedge plane in the inner arc surface one or both sides of slide block.
Press such scheme, described interior revolving body can be axle or bit leg journel, and described external gyrorotor can be axle sleeve or gear wheel; Described slide block is the circular arc piece, is flat shape block structure or secter pat structure; Described rolling element is roller or ball.
Press such scheme, slide block in the ring raceway groove and rolling element space are staggered installs, and slide block left and right sides face contacts with rolling element.
Press such scheme, described sliding sleeve is the sliding sleeve of radial floating.
Press such scheme, the width W 1 on the exterior arc surface one side oil film wedge plane of described slide block is 2～10 millimeters, and the width W 2 on the inner arc surface one side oil film wedge plane of described slide block is 2～10 millimeters.
Press such scheme, the angle β on described exterior arc surface one side oil film wedge plane and slide block radial center (symmetry) plane is 60～85 °, is generally 70～80 °; The angle theta on circular arc one side oil film wedge plane and slide block radial center (symmetry) plane is 70～90 ° in described.
The beneficial effect of the utility model is: 1, regulate the lubrication state between each running gear through the plane oil film wedge is set, reach the relative sliding velocity of regulating between each parts.Through regulating the relative sliding velocity V3 between relative sliding velocity V2, sliding sleeve and the interior revolving body between relative sliding velocity V1, slide block and the sliding sleeve between external gyrorotor and the slide block; Make V1, V2, V3 distribute the balance and reasonable that more becomes; Reduce the wearing and tearing of bearing parts, thereby improve the supporting capacity and the life-span of skid bearing; 2, improve the lubrication circumstances between the external cylindrical surface of external gyrorotor and slide block.After the exterior arc surface one or both ends of slide block are provided with the oil film wedge plane; Slide owing to exist relatively between slide block and the external gyrorotor; Sliding agent between oil film wedge plane and the external gyrorotor just can better infiltrate on the contact surface of exterior arc surface and external gyrorotor of slide block; Form oil film, improved the lubrication state of contact surface of exterior arc surface and the external gyrorotor of slide block, the supporting capacity and the life-span of further improving the skid bearing.3, reduce friction and rise heat, reduce bearing temperature.After offering the oil film wedge plane on the exterior arc surface of slide block, the contact surface area of the exterior arc surface of slide block and external gyrorotor reduces, and reducing friction rises heat, reduces bearing temperature, the supporting capacity and the life-span of further improving the skid bearing.
Indoor life test through by the size of 81/2 inch tricone bit bearing the utility model being done shows; The bearing of the utility model is under 400 rev/mins rotating speed, 50KN load; Work after 60 hours, gear wheel endoporus (being the external gyrorotor inner cylinder face): there is slight polishing scratch on the surface; Slide block: exterior arc surface has slight polishing scratch, and inner arc surface has slight polishing scratch, and there is polishing scratch two sides; Roller: there is slight polishing scratch on the surface; Sliding sleeve: external cylindrical surface has slight polishing scratch, and inner cylinder face has slight polishing scratch; Axle journal (the revolving body face of cylinder promptly): stress surface has slight polishing scratch.
The abrasion condition of each part can be found out after the indoor life test that the bearing of the utility model is done; All faces that bear radial load all have slight polishing scratch; This explains that all wearing and tearing of bearing the face of radial load are balanced, slight, and this wear characteristic obviously helps improving the supporting capacity and the life-span of skid bearing.
The indoor bite-resistant comparison of test results situation that the bearing of the bearing of the utility model and patent CN01212693.4 is done; Under 400 rev/mins rotating speed; Load during the bearing generation interlock of the utility model is 120KN, and the load during the bearing generation interlock of patent CN01212693.4 is 110KN.This explanation, the bite-resistant ability of the bearing of the bite-resistant ability force rate patent CN01212693.4 of the bearing of the utility model improves 9%.
Description of drawings
Fig. 1 is the sectional drawing of the utility model basic structure, also is the A-A sectional drawing among Fig. 2.
Fig. 2 is the structural representation of an embodiment of the utility model.
Fig. 3 is the structural representation of the slide block of the utility model.
Fig. 4 is the structural representation of sliding sleeve among the utility model embodiment.
The specific embodiment
Embodiment below in conjunction with accompanying drawing further explain the utility model.
Have interior revolving body 5, external gyrorotor 1 and be set in the sliding sleeve 4 of revolving body 5; Revolving body is a bit leg journel in described; External gyrorotor is a gear wheel; Be installed on cutting teeth 8 on the gear wheel, sliding sleeve 4 is the sliding sleeve of radial floating, and formed annular raceway groove interval is installed on 8 slide blocks 2 and 8 rolling elements 3 between gear wheel endoporus and bit leg journel.Gear wheel axially locks with steel ball 7 after being inserted in bit leg journel, and place, gear wheel aperture is installed on sealing ring 6.Described rolling element 3 is a roller; Slide block 2 is the block hexahedron of circular arc, has exterior arc surface 20 and inner arc surface 21, and slide block left and right sides face 22,23 contacts with rolling element; Slide block left and right sides face 22,23 is parallel to each other; And parallel with radial center (symmetry) plane 24 of slide block, be the parallel block structure, as shown in Figure 3.Be provided with oil film wedge plane 25 in the both sides of exterior arc surface 20, the oil film wedge plane 25 of described exterior arc surface is 3 person of outstanding talent's rice in the width W 1 with slide block lateral vertical direction, and oil film wedge plane 25 is 70 degree with the angle β on slide block radial center (symmetry) plane.Be provided with oil film wedge plane 26 at the two ends of inner arc surface 23, the oil film wedge plane 26 at inner arc surface two ends is vertical with radial center (symmetry) plane 24 of slide block, and vertical width W2 is 3 millimeters.
Claims (9)
1. roll-slide combined bearing; Include slide block and rolling element in interior revolving body, external gyrorotor, the ring raceway groove; Between interior revolving body and slide block, rolling element, be provided with sliding sleeve, it is characterized in that being provided with the oil film wedge plane in the exterior arc surface one or both sides of slide block.
2. by the described roll-slide combined bearing of claim 1, it is characterized in that being provided with the oil film wedge plane in the inner arc surface one or both sides of slide block.
3. by claim 1 or 2 described roll-slide combined bearings, it is characterized in that described interior revolving body can be axle or bit leg journel, described external gyrorotor can be axle sleeve or gear wheel; Described slide block is the circular arc piece, is flat shape block structure or secter pat structure; Described rolling element is roller or ball.
4. by claim 1 or 2 described roll-slide combined bearings, it is characterized in that the width W 1 on the exterior arc surface one side oil film wedge plane of described slide block is 2～10 millimeters.
5. by the described roll-slide combined bearing of claim 1, it is characterized in that the angle β of described exterior arc surface one side oil film wedge plane and slide block radial central planes is 60～85 °.
6. by the described roll-slide combined bearing of claim 2, it is characterized in that the width W 2 on the inner arc surface one side oil film wedge plane of described slide block is 2～10 millimeters.
7. by the described roll-slide combined bearing of claim 6, it is characterized in that the angle theta of described interior circular arc one side oil film wedge plane and slide block radial central planes is 70～90 °.
8. by the described roll-slide combined bearing of claim 5, it is characterized in that the angle β of described exterior arc surface one side oil film wedge plane and slide block radial central planes is 70～80 °.
9. by claim 1 or 2 described roll-slide combined bearings, it is characterized in that slide block in the ring raceway groove interlocks with the rolling element space to install that slide block left and right sides face contacts with rolling element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203344474U CN202227988U (en) | 2011-09-07 | 2011-09-07 | Rolling-sliding compound bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203344474U CN202227988U (en) | 2011-09-07 | 2011-09-07 | Rolling-sliding compound bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202227988U true CN202227988U (en) | 2012-05-23 |
Family
ID=46078576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203344474U Expired - Fee Related CN202227988U (en) | 2011-09-07 | 2011-09-07 | Rolling-sliding compound bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202227988U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863959A (en) * | 2014-02-24 | 2015-08-26 | 浙江万里学院 | Novel rolling sliding bearing and friction-lubrication mechanism structure |
| CN107654497A (en) * | 2017-10-06 | 2018-02-02 | 西南石油大学 | The compound thrust bearing of skid |
-
2011
- 2011-09-07 CN CN2011203344474U patent/CN202227988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863959A (en) * | 2014-02-24 | 2015-08-26 | 浙江万里学院 | Novel rolling sliding bearing and friction-lubrication mechanism structure |
| CN107654497A (en) * | 2017-10-06 | 2018-02-02 | 西南石油大学 | The compound thrust bearing of skid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20180907 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |