CN203453281U - Circular-square dual-roll-bed yaw bearing - Google Patents
Circular-square dual-roll-bed yaw bearing Download PDFInfo
- Publication number
- CN203453281U CN203453281U CN201320554241.1U CN201320554241U CN203453281U CN 203453281 U CN203453281 U CN 203453281U CN 201320554241 U CN201320554241 U CN 201320554241U CN 203453281 U CN203453281 U CN 203453281U
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- Prior art keywords
- raceway
- roller
- steel ball
- spacing block
- outer ring
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Abstract
The utility model discloses a circular-square dual-roll-bed yaw bearing which comprises an outer circle and an inner circle, wherein an inner gear is arranged on the inner side surface of the inner circle, an upper roll bed is arranged on the combined surface of the outer circle and the inner circle, the upper roll bed is shaped like a circular tube formed by combining two semicircular grooves, a plurality of upper steel balls and a plurality of upper isolating blocks are arranged in the upper roll bed, a lower roll bed is also arranged on the combined surface of the outer circle and the inner circle and positioned below the upper roll bed, the lower roll bed is shaped like a circular square tube formed by two isosceles right angle-shaped grooves corresponding to the inner side of the outer circle and the outer side of the inner circle, a plurality of lower steel balls, a plurality of rollers and a plurality of lower isolating blocks are arranged in the lower roll bed, and the adjacent steel balls and the rollers, the adjacent lower steel balls, and the adjacent rollers are isolated respectively through the lower isolating blocks of different shapes. The circular-square dual-roll-bed yaw bearing can effectively take advantages of being more in contacts of a roller type structure, high in bearing capacity and high in stability while the characteristics of being reasonable in cost performance of a steel-ball-type structure, and high in sensitivity can be fully kept.
Description
Technical field
The utility model relates to novel mechanical product technical field, relates in particular to a kind of design of the two raceway driftage of circle one side bearing of Large-scale Wind Turbines.
Background technique
Large-scale Wind Turbines more than MW class, conventionally hundred meters of left and right of tower height.On the top of tower cylinder, be provided with the large-scale driftage bearing of 3～4 meters of a set of diameters, the company's of being used for head, lower connecting barrel body, just as people's neck neck.This cover driftage bearing, should bear the thrust load from generator and blade gravity, meanwhile, bears again radial load and tipping load that driftage swing, wind direction and wind velocity and blade rotary etc. produce, and its function and efficacy can not be despised.The rolling structure of driftage bearing, mostly adopts single raceway four-point contact ball formula design.
Model utility content
The purpose of this utility model is in order to make up the deficiency of prior art, the two raceway driftage of a kind of circle one side bearing is provided, solve bearing capacity and the inadequate problem of smoothness of existing large-scale driftage bearing, the two raceway driftage of large-scale wind electricity unit bearing for the above wind power generating set of MW class, it is provided with two difform raceways, take and load steel ball as the main and auxiliary large-scale driftage bearing with a small amount of roller, to strengthen its bearing capacity and smoothness.
The utility model is achieved through the following technical solutions:
The two raceway driftage of a kind of circle one side bearing, include outer ring and inner ring, outer ring sleeve is contained in outside the circumference of inner ring, there is an internal gear inner side of inner ring, between outer ring and inner ring, there is raceway on, upper raceway is for embedding respectively two semi-circular recesses in inner side, outer ring and inner ring outside, two semi-circular recesses are merged into the upper raceway that cross section is tubular shape, steel ball is housed on several in upper raceway and spacing block on several, between adjacent upper steel ball, by upper spacing block, separated, it is characterized in that: between outer ring and inner ring, also have raceway, lower raceway is below upper raceway, lower raceway is two isosceles right triangle grooves that are embedded in inner side, outer ring and inner ring outside, two isosceles right triangle grooves are merged into the lower raceway that cross section is square-tube-shaped, several lower steel balls are housed in lower raceway, roller and lower spacing block, described lower spacing block is three kinds of shapes, include respectively the ball spacing block between the adjacent lower steel ball of isolation, isolate the post spacing block between adjacent roller, and isolate adjacent lower steel ball and the goalpost spacing block between roller, the surface of contact of described ball spacing block and lower steel ball is respectively two spheres, post spacing block is respectively two cylndrical surface that axis is vertical with the surface of contact of roller, the surface of contact of goalpost spacing block and lower steel ball be sphere and with the surface of contact of roller be cylndrical surface.
The ratio of the lower steel ball in described lower raceway and the quantity of roller is (10～15): 1, and roller be take 2～3 as between one group of lower steel ball being distributed in raceway.
Axis in described lower raceway between adjacent roller is mutual, and the quantity of the roller of vertical and two kinds of coaxial line directions equates substantially.
The cross section square length of side of described lower raceway is with the equal diameters of lower steel ball, roller and gapped.
The diameter of lower steel ball in described lower raceway and the equal diameters of roller, the cylinder height of roller is slightly less than the diameter of roller.
The interior of the outer circumference of described inner ring and outer ring has seal groove on circumference, and a side of seal ring is contained in above-mentioned seal groove, and the opposite side of seal ring is overlapped on respectively on the upper-end surface of outer ring and the lower end surface of inner ring.
On described inside and outside circle, be equipped with several along the mounting hole of circumference uniform distribution, the mounting hole of inner ring and head flange are fixed, and the mounting hole of outer ring and tower top flange are fixed.
On the circumference in described outside, outer ring, have upper and lower two-layer each 4～8 oilholes that lead to respectively raceway and lower raceway, oilhole oral area is provided with oil nozzle, for upper raceway
,steel ball
,lubricating of roller and spacing block; And on the circumference in outside, outer ring, over against upper raceway and lower raceway, respectively have a filling hole, for loading roller, steel ball and spacing block, after filling, with plug piece, seal, and fixed with wearing pin.
The utility model has the advantages that:
The utility model needs for the technique of large diameter driftage bearing, a kind of upper and lower two difform roller path structures that are provided with are provided, and under its square-tube-shaped in raceway, both most steel balls had been loaded, be aided with again a small amount of group of rollers, when fully keeping reasonable, the highly sensitive feature of ball formula structure sexual valence, effectively bring into play again the advantage that pole structure point of contact is many, bearing capacity is strong and smoothness is high.
Accompanying drawing explanation
Fig. 1 is the two raceway driftage of circle one side bearing part section structural representation;
Fig. 2 is the schematic diagram of the interior filling of lower raceway lower steel ball, roller and the lower spacing block of the two raceway driftage of circle one side bearing;
Fig. 3 is lower steel ball and the roller size comparison diagram of the two raceway driftage of circle one side bearing;
Fig. 4 is three kinds of shape schematic diagram of lower spacing block of the two raceway driftage of circle one side bearing.
In Fig. 1 to Fig. 4, label 1 is outer ring, and 2 is inner ring, 3 is internal tooth, and 4 is upper raceway, and 5 is upper steel ball, 6 is upper spacing block, and 7 is lower raceway, and 8 is lower steel ball, 9 is roller, and 10 is that (wherein 101 is ball spacing block to lower spacing block, and 102 is post spacing block, 103 is goalpost spacing block), 11 is seal ring, 12 is filling hole, 13 is oilhole, and 14 is mounting hole.
Embodiment
The two raceway driftage of a kind of circle one side bearing, comprise: outer ring 1 and inner ring 2, outer ring sleeve is contained in outside the circumference of inner ring 2, inner ring 2 is installed higher than outer ring 1, outer circumference and the interior of outer ring 1 at inner ring 2 have seal groove on circumference, one end of seal ring 11 is contained in above-mentioned seal groove, and the other end of seal ring 11 is overlapped on respectively on the lower end surface of inner ring 2 and the upper-end surface of outer ring 1.There is an internal tooth 3 inner side of inner ring 2, has several along the mounting hole 14 of circumference uniform distribution on the circumference of outer ring 1 and inner ring 2, mounting hole 14 and the head flange connect of inner ring 2, and mounting hole 14 and the tower top flange of outer ring 1 are fixed.Between outer ring 1 and inner ring 2, there is raceway 4 on, upper raceway 4 is for embedding respectively the semi-circular recesses in 1 inner side, outer ring and inner ring 2 outsides, above-mentioned two semi-circular recesses are merged into the raceway that cross section is tubular shape, steel ball 5 is housed on several in upper raceway 4 and spacing block 6 on several, between two adjacent upper steel balls 5, by upper spacing block 6, is separated.
As shown in Figure 1, between outer ring 1 and inner ring 2, also has raceway 7, lower raceway 7 is below upper raceway 4, lower raceway 7 is for being embedded in two isosceles right triangle grooves in 1 inner side, outer ring and inner ring 2 outsides, above-mentioned two isosceles right triangle grooves are merged into the raceway that cross section is square-tube-shaped, several lower steel ball 8, roller 9 and lower spacing blocks 10 are housed in lower raceway 7, between adjacent lower steel ball 8 and roller 9, separated by three kinds of difform lower spacing blocks 10 respectively between adjacent lower steel ball 8 and between adjacent roller 9.
As shown in Figure 1, have 4～8 oilholes 13 that lead to respectively raceway 4 and lower raceway 7 on the circumference in 1 outside, outer ring, oilhole oral area is provided with oil nozzle.On the circumference in 1 outside, outer ring over against on raceway 4 and lower raceway 7 respectively open a filling hole 12, for loading upper steel ball 5 and the upper spacing block 6 of raceway 4, with lower steel ball 8, lower spacing block 10 and the roller 9 of the lower raceway 7 of filling, after filling, with plug piece, seal, and fixed with wearing pin.
As shown in Figure 2, the ratio of the lower steel ball 8 in lower raceway 7 and the quantity of roller 9 is 10～15:1, roller 9 be take 2～3, and in one group of raceway 7 that is distributed on square-tube-shaped, the axis between adjacent roller 9 is mutually vertical, and the quantity of the roller 9 of the interior same axis direction of lower raceway 7 equates substantially.
As shown in Figure 3, the equal diameters of lower steel ball 8 and roller 9 and and the length of side of raceway 7 leave a little gap, to make to have on the sphere of steel ball 8 on the cylndrical surface of four point of contact, roller 9, have four Line of contact can contact the wall of square-tube-shaped raceway simultaneously; The diameter d of roller 7 is slightly larger than its high h, so that the both ends of the surface of roller 7 can not contact raceway wall.
As shown in Figure 4, lower spacing block 10 comprises: isolate two adjacent lower steel balls 5 ball spacing block 101, isolate the post spacing block 102 of two adjacent rollers 9 and isolate adjacent lower steel ball 5 and the goalpost spacing block 103 of roller 9, ball spacing block 101 is respectively two spheres with the surface of contact of steel ball 5, post spacing block 102 is respectively two cylndrical surface that axis is perpendicular with the surface of contact of roller 9, goalpost spacing block 103 is sphere with the surface of contact of steel ball 5, with the surface of contact of roller 9 be cylndrical surface.
More than describing is to explanation of the present utility model, is not to restriction of the present utility model, and the utility model limited range is referring to claims.
Claims (8)
1. the two raceways driftage of circle one side bearing, include outer ring and inner ring, outer ring sleeve is contained in outside the circumference of inner ring, there is an internal gear inner side of inner ring, between outer ring and inner ring, there is raceway on, upper raceway is for embedding respectively two semi-circular recesses in inner side, outer ring and inner ring outside, two semi-circular recesses are merged into the upper raceway that cross section is tubular shape, steel ball is housed on several in upper raceway and spacing block on several, between adjacent upper steel ball, by upper spacing block, separated, it is characterized in that: between outer ring and inner ring, also have raceway, lower raceway is below upper raceway, lower raceway is two isosceles right triangle grooves that are embedded in inner side, outer ring and inner ring outside, two isosceles right triangle grooves are merged into the lower raceway that cross section is square-tube-shaped, several lower steel balls are housed in lower raceway, roller and lower spacing block, described lower spacing block is three kinds of shapes, include respectively the ball spacing block between the adjacent lower steel ball of isolation, isolate the post spacing block between adjacent roller, and isolate adjacent lower steel ball and the goalpost spacing block between roller, the surface of contact of described ball spacing block and lower steel ball is respectively two spheres, post spacing block is respectively two cylndrical surface that axis is vertical with the surface of contact of roller, the surface of contact of goalpost spacing block and lower steel ball be sphere and with the surface of contact of roller be cylndrical surface.
2. according to claim 1 one justifies the two raceways driftage of side bearing, it is characterized in that: the ratio of the lower steel ball in described lower raceway and the quantity of roller is (10～15): 1, and roller be take 2～3 as between one group of lower steel ball being distributed in raceway.
3. the two raceways driftage of circle one side according to claim 2 bearing, is characterized in that: the axis in described lower raceway between adjacent roller is mutual, and the quantity of the roller of vertical and two kinds of coaxial line directions equates substantially.
4. the two raceways driftage of circle one side according to claim 3 bearing, is characterized in that: the cross section square length of side of described lower raceway is with the equal diameters of lower steel ball, roller and gapped.
5. the two raceway driftage of circle one side according to claim 3 bearing, is characterized in that: the diameter of lower steel ball in described lower raceway and the equal diameters of roller, the cylinder height of roller is slightly less than the diameter of roller.
6. according to claim 1 one justifies the two raceways driftage of side bearing, it is characterized in that: the interior of the outer circumference of described inner ring and outer ring has seal groove on circumference, one side of seal ring is contained in above-mentioned seal groove, and the opposite side of seal ring is overlapped on respectively on the upper-end surface of outer ring and the lower end surface of inner ring.
7. according to claim 1 one justifies the two raceways driftage of side bearing, it is characterized in that: on described inside and outside circle, be equipped with several along the mounting hole of circumference uniform distribution, the mounting hole of inner ring and head flange are fixed, and the mounting hole of outer ring and tower top flange are fixed.
8. the two raceway driftage of circle one side according to claim 1 bearing, is characterized in that: on the circumference in described outside, outer ring, have upper and lower two-layer each 4～8 oilholes that lead to respectively raceway and lower raceway, oilhole oral area is provided with oil nozzle, for upper raceway
,steel ball
,lubricating of roller and spacing block; And on the circumference in outside, outer ring, over against upper raceway and lower raceway, respectively have a filling hole, for loading roller, steel ball and spacing block, after filling, with plug piece, seal, and fixed with wearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320554241.1U CN203453281U (en) | 2013-09-07 | 2013-09-07 | Circular-square dual-roll-bed yaw bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320554241.1U CN203453281U (en) | 2013-09-07 | 2013-09-07 | Circular-square dual-roll-bed yaw bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453281U true CN203453281U (en) | 2014-02-26 |
Family
ID=50133157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320554241.1U Expired - Fee Related CN203453281U (en) | 2013-09-07 | 2013-09-07 | Circular-square dual-roll-bed yaw bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453281U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511451A (en) * | 2013-09-07 | 2014-01-15 | 安徽枞晨回转支承有限公司 | Double-raceway yaw bearing with one round raceway and one square raceway |
| CN107975532A (en) * | 2016-10-21 | 2018-05-01 | 株式会社捷太格特 | Rolling bearing |
-
2013
- 2013-09-07 CN CN201320554241.1U patent/CN203453281U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511451A (en) * | 2013-09-07 | 2014-01-15 | 安徽枞晨回转支承有限公司 | Double-raceway yaw bearing with one round raceway and one square raceway |
| CN107975532A (en) * | 2016-10-21 | 2018-05-01 | 株式会社捷太格特 | Rolling bearing |
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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: 20140226 Termination date: 20150907 |
|
| EXPY | Termination of patent right or utility model |