CN103062224A - Grease-leakage-prevention wind electricity turntable bearing - Google Patents
Grease-leakage-prevention wind electricity turntable bearing Download PDFInfo
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- CN103062224A CN103062224A CN2013100085522A CN201310008552A CN103062224A CN 103062224 A CN103062224 A CN 103062224A CN 2013100085522 A CN2013100085522 A CN 2013100085522A CN 201310008552 A CN201310008552 A CN 201310008552A CN 103062224 A CN103062224 A CN 103062224A
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- fat
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Abstract
The invention discloses a grease-leakage-prevention wind electricity turntable bearing, and relates to the technical field of wind electricity bearings. The grease-leakage-prevention wind electricity turntable bearing comprises an inner ring, an outer ring, steel balls, insulation blocks and a seal ring; the steel balls are arranged in a mold cavity formed by rolling channels of the inner ring and the outer ring; the insulation blocks are arranged between adjacent steel balls; the seal ring is arranged between the inner ring and the outer ring; the inner ring is provided with two rows of rolling channels, wherein one row of rolling channels are connected with grease inlets through grease inlet oil trenches in the rolling channels, and the other row of rolling channels are connected with grease exhaust holes through grease exhaust oil channels in the rolling channels; the grease inlets are radially arranged on the inner ring, and the grease inlet oil trenches and the inner peripheral surface of the inner ring are communicated; the grease exhaust holes communicate the grease exhaust trenches with the lower end surface of the inner ring; and a grease block ring is arranged between the seal ring and the mold cavity. According to the invention, the grease leakage problem of the wind electricity turntable bearing is solved through improving the structures of the grease exhaust holes of the bearing and adding the grease blocking ring.
Description
Technical field
The present invention relates to the wind power bearing technical field, refer more particularly to a kind of leakproof fat wind-powered turntable bearing.
Background technique
Wind-powered turntable bearing is used in the middle of the yaw system and pitch-controlled system of wind power generating set.Bearing mainly is comprised of inner ring, outer ring, steel ball, retainer/spacing block and seal ring.On inner ring or outer ring, radially be designed with fat hole and row's fat hole, be respectively applied to the filling of new lubricating grease and the discharge of waste and old lubricating grease, seal ring is isolated from the outside for the inside die cavity with bearing and comes, and avoids the leakage of internal lubrication fat and entering of external dust.Because wind power generating set aloft work in the open air, wind-powered turntable bearing adopts usually to be concentrated automatically for the fat device according to certain time interval bearing supplemental lubrication fat, collects waste and old grease by oil-collecting bottle.
For the fat device with certain pressure with grease adding in the bearing race die cavity, at waste and old lubricating grease in the discharge process of oil-collecting bottle, need to overcome certain row's fat hole and arrange the fat pipe resistance and just can enter into oil-collecting bottle, along with the accumulation of lubricating grease in the inner die cavity of bearing, the lubricating grease pressure in the bearing race die cavity also increases thereupon.In addition, the turntable bearing level of yaw system is installed in tower cylinder top, and lubricating grease deposits to the bottom of the inner die cavity of bearing in the effect of self gravitation, gives the lower seal build-up of pressure.For pitch variable bearings, in the rotation process of wind wheel, because the effect of centrifugal force, lubricating grease is thrown in the inner die cavity of bearing the end away from the wind wheel gyration center, and to the seal ring build-up of pressure of this end.
And at present, existing wind-powered turntable bearing, its structure such as accompanying drawing 1, can find out between lubricating grease and the seal ring and not have safeguard structure, lubricating grease pressure directly acts on seal ring, because seal ring is by the rubber material manufacturing, under the effect of bearing race die cavity lubricating grease pressure, be easy to produce the distortion and the leakage that causes lubricating grease.And row's fat hole of existing wind-powered turntable bearing is along radially the arranging of bearing fully, is unfavorable for the discharge of lubricating grease, can increase like this pressure of the inner die cavity of bearing, impels the leakage of lubricating grease.The leakage fat phenomenon of wind-powered turntable bearing not only has influence on the lubrication effect of bearing, and waste lubricating grease is returned host computer of wind-driven electric generator and brought very large pollution.
Summary of the invention
In order to address the above problem, the invention provides a kind of leakproof fat wind-powered turntable bearing, can prevent preferably the leakage of lubricating grease.
In order to achieve the above object, technological scheme of the present invention is: a kind of leakproof fat wind-powered turntable bearing, comprise inner ring, the outer ring, steel ball, spacing block and seal ring, steel ball is arranged in the die cavity that the raceway of inner ring and outer ring consists of, be provided with spacing block between the adjacent steel ball, seal ring is arranged between inner ring and the outer ring, inner ring is provided with two row's raceways, row's raceway wherein is connected with fat hole by the fatty oil ditch that advances in the raceway, another row's raceway is connected with row's fat hole by the row's fatty oil ditch in the raceway, fat hole is disposed radially on inner ring, and the inner peripheral surface that will advance fatty oil ditch and inner ring is communicated with, and the lower end surface that fatty oil ditch and inner ring will be arranged in row's fat hole is communicated with.
Described row's fat hole is comprised of the radial section that intersects vertically and axial direction part.
The length of the radial section in described row's fat hole is less than the length of axial direction part.
Be provided with the gear alicyclic ring between described seal ring and the described die cavity.
Described gear alicyclic ring is arranged on the outer peripheral surface of inner ring, and it is a bulge loop.
Described gear alicyclic ring is arranged on the inner peripheral surface of outer ring, and it is a bulge loop.
Described seal ring is double-lip sealing ring, and the mounting strap of double-lip sealing ring is arranged in the rectangle mounting groove that matches with it on inner ring or the outer ring, and another circle of bearing is provided with the arcuation projection band that matches with the sealing lip of seal ring.The rectangle mounting groove that matches with the mounting strap of seal ring and described gear alicyclic ring are on the inner ring that is located at bearing, on the outer ring that is located at bearing.
Radially be provided with dress ball hole on the inner ring of described leakproof fat wind-powered turntable bearing, dress ball hole is in communication with the outside the raceway of inner ring, the dress ball is provided with stopper in the hole, is provided with vertically the taper pin-hole that runs through stopper on the inner ring, and the taper pin that is arranged in the taper pin-hole is radially fixing with stopper.The axial screw thread counterbore that is designed with the gear teeth on the outer ring of bearing and along the circumferential direction evenly arranges.Be provided with axial hole along even circumferential on the inner ring of bearing, these holes are used for bearing and are connected with the installation of main frame.
Beneficial effect: the present invention is provided with the gear alicyclic ring between the die cavity of bearing sealed ring and bearing race, the gear alicyclic ring is in order to bear the pressure-acting of lubricating grease in the bearing die cavity, avoid the direct pressure effect of lubricating grease to seal ring, thereby eliminated the lubricating grease leakage phenomenon that the pressure-acting owing to lubricating grease causes sealed ring deformation; And gear alicyclic ring and seal ring be positioned on inside and outside two circles of bearing, both opposite directions, and formation loop, labyrinth, the inside die cavity with bearing is isolated from the outside out effectively, has avoided entering of external dust.Simultaneously, the present invention has improved row's fat pore structure, going out on the lower end surface that the fat end has been located at inner ring of the row of making fat hole, more specifically will arrange the fat hole is designed to be comprised of two sections of radial section and axial direction parts, and the length of radial section is enough short, the axial direction part in row's fat hole can utilize the gravity of lubricating grease or centrifugal force easily waste and old grease to be got rid of like this, from the effect that has reduced the pressure of lubricating grease in the bearing die cavity, further played to prevent that lubricating grease from revealing from seal ring.
Description of drawings
Fig. 1 is the axial section structural representation of existing wind-powered turntable bearing.
Fig. 2 is the axial section structural representation of leakproof fat wind-powered turntable bearing of the present invention.
Fig. 3 is the partial enlarged drawing at place, row's fat hole among Fig. 2.
Fig. 4 is the partial enlarged drawing at gear alicyclic ring place, Fig. 2 middle (center) bearing top.
Be labeled as among the figure: 1, outer ring, 2, steel ball, 3, spacing block, 4, seal ring, 5, inner ring, 6, the gear alicyclic ring, 7, advance the fatty oil ditch, 8, fat hole, 9, row's fat hole, 10, row's fatty oil ditch, 11, stopper, 12, taper pin.
Embodiment
The present invention is further described below in conjunction with accompanying drawing.
As shown in Figure 2, a kind of leakproof fat wind-powered turntable bearing, comprise inner ring 5, outer ring 1, steel ball 2, spacing block 3 and seal ring 4, steel ball 2 is arranged in the die cavity that the raceway of inner ring 5 and outer ring 1 consists of, be provided with spacing block 3 between the adjacent steel ball 2, seal ring 4 is arranged between inner ring 5 and the outer ring 1, inner ring 5 is provided with two row's raceways, row's raceway wherein is connected with fat hole 8 by the fatty oil ditch 7 that advances in the raceway, another row's raceway is connected with row's fat hole 9 by the row's fatty oil ditch 10 in the raceway, fat hole 8 is disposed radially on inner ring 5, and the inner peripheral surface that will advance fatty oil ditch 7 and inner ring 5 is communicated with, and the lower end surface that fatty oil ditch 10 and inner ring 5 will be arranged in row's fat hole 9 is communicated with.
Particularly, described row's fat hole 9 is comprised of the radial section that intersects vertically and axial direction part, and the length of radial section is less than the length of axial direction part, such structure is so that the lubricating grease in the bearing die cavity can utilize the centrifugal force in himself gravity or the rotation process to discharge from the lower end surface of inner ring 5 easily, reduce the pressure of lubricating grease in the bearing die cavity, played the effect that prevents that lubricating grease from revealing from seal ring.
Be provided with gear alicyclic ring 6 between described seal ring 4 and the described die cavity, gear alicyclic ring 6 is arranged on the outer peripheral surface of inner ring 5 or is arranged on the inner peripheral surface of outer ring 1, and it is a bulge loop.The gear alicyclic ring replaces seal ring to bear the pressure-acting of lubricating grease, thereby has avoided playing the effect of leakproof fat because the pressure-acting of lubricating grease makes sealed ring deformation.
Described seal ring 4 is double-lip sealing ring, and the mounting strap of double-lip sealing ring is arranged in the rectangle mounting groove that matches with it on inner ring 5 or the outer ring 1, and another circle of bearing is provided with the arcuation projection band that matches with the sealing lip of seal ring.The rectangle mounting groove that matches with the mounting strap of seal ring and 6, one of described gear alicyclic rings are located on the inner ring 5 of bearing, on the outer ring 1 that is located at bearing.
Radially be provided with dress ball hole on the inner ring 5 of described leakproof fat wind-powered turntable bearing, dress ball hole is in communication with the outside the raceway of inner ring 5, the dress ball is provided with stopper 11 in the hole, is provided with vertically the taper pin-hole that runs through stopper 11 on the inner ring 5, and the taper pin 12 that is arranged in the taper pin-hole is radially fixing with stopper 11.The axial screw thread counterbore that is designed with the gear teeth on the outer ring 1 of bearing and along the circumferential direction evenly arranges.Be provided with axial hole along even circumferential on the inner ring 5 of bearing, these holes are used for bearing and are connected with the installation of main frame.
Claims (6)
1. leakproof fat wind-powered turntable bearing, comprise inner ring (5), outer ring (1), steel ball (2), spacing block (3) and seal ring (4), steel ball (2) is arranged in the die cavity that the raceway of inner ring (5) and outer ring (1) consists of, be provided with spacing block (3) between the adjacent steel ball (2), seal ring (4) is arranged between inner ring (5) and outer ring (1), inner ring (5) is provided with two row's raceways, row's raceway wherein is connected with fat hole (8) by the fatty oil ditch (7) that advances in the raceway, another row's raceway is connected with row fat hole (9) by the row's fatty oil ditch (10) in the raceway, it is characterized in that: fat hole (8) is disposed radially on inner ring (5), the inner peripheral surface that will advance fatty oil ditch (7) and inner ring (5) is communicated with, and the lower end surface that fatty oil ditch (10) and inner ring (5) will be arranged in row fat hole (9) is communicated with.
2. a kind of leakproof fat wind-powered turntable bearing as claimed in claim 1, it is characterized in that: described row's fat hole (9) is comprised of the radial section that intersects vertically and axial direction part.
3. a kind of leakproof fat wind-powered turntable bearing as claimed in claim 2, it is characterized in that: the length of the radial section in described row's fat hole (9) is less than the length of axial direction part.
4. a kind of leakproof fat wind-powered turntable bearing as claimed in claim 1 is characterized in that: be provided with gear alicyclic ring (6) between seal ring (4) and the described die cavity.
5. a kind of leakproof fat wind-powered turntable bearing as claimed in claim 4, it is characterized in that: described gear alicyclic ring (6) is arranged on the outer peripheral surface of inner ring (5).
6. a kind of leakproof fat wind-powered turntable bearing as claimed in claim 4, it is characterized in that: described gear alicyclic ring (6) is arranged on the inner peripheral surface of outer ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008552.2A CN103062224B (en) | 2013-01-10 | 2013-01-10 | A kind of leakproof fat wind-powered turntable bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008552.2A CN103062224B (en) | 2013-01-10 | 2013-01-10 | A kind of leakproof fat wind-powered turntable bearing |
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| Publication Number | Publication Date |
|---|---|
| CN103062224A true CN103062224A (en) | 2013-04-24 |
| CN103062224B CN103062224B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310008552.2A Expired - Fee Related CN103062224B (en) | 2013-01-10 | 2013-01-10 | A kind of leakproof fat wind-powered turntable bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286793A (en) * | 2013-05-21 | 2013-09-11 | 浙江万丰科技开发有限公司 | Stacking robot |
| CN104141684A (en) * | 2014-01-09 | 2014-11-12 | 成都绿迪科技有限公司 | Hydraulic self-adaptive ball bearing |
| CN107448481A (en) * | 2017-09-15 | 2017-12-08 | 东方电气风电有限公司 | A kind of blower fan turntable bearing leakproof fat sealing structure |
| CN108007785A (en) * | 2017-12-22 | 2018-05-08 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Wind power bearing sealing ring voltage endurance capability test fixture and method |
| CN110630642A (en) * | 2018-06-21 | 2019-12-31 | 斯凯孚公司 | Bearing assembly with improved sealing ring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201475162U (en) * | 2009-09-01 | 2010-05-19 | 常州光洋轴承有限公司 | Special bearing for yaw system of megawatt wind turbine |
| WO2012004272A1 (en) * | 2010-07-06 | 2012-01-12 | Aktiebolaget Skf | Passage for grease in flanged bearings |
| WO2012126529A1 (en) * | 2011-03-24 | 2012-09-27 | Aktiebolaget Skf | Angular contact roller bearing, notably used in a wind turbine |
| WO2012136632A1 (en) * | 2011-04-05 | 2012-10-11 | Rothe Erde Gmbh | Oil-lubricated anti-friction bearing |
| CN203067553U (en) * | 2013-01-10 | 2013-07-17 | 河南科技大学 | Grease leakage proof type wind power turntable bearing |
-
2013
- 2013-01-10 CN CN201310008552.2A patent/CN103062224B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201475162U (en) * | 2009-09-01 | 2010-05-19 | 常州光洋轴承有限公司 | Special bearing for yaw system of megawatt wind turbine |
| WO2012004272A1 (en) * | 2010-07-06 | 2012-01-12 | Aktiebolaget Skf | Passage for grease in flanged bearings |
| WO2012126529A1 (en) * | 2011-03-24 | 2012-09-27 | Aktiebolaget Skf | Angular contact roller bearing, notably used in a wind turbine |
| WO2012136632A1 (en) * | 2011-04-05 | 2012-10-11 | Rothe Erde Gmbh | Oil-lubricated anti-friction bearing |
| CN203067553U (en) * | 2013-01-10 | 2013-07-17 | 河南科技大学 | Grease leakage proof type wind power turntable bearing |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286793A (en) * | 2013-05-21 | 2013-09-11 | 浙江万丰科技开发有限公司 | Stacking robot |
| CN104141684A (en) * | 2014-01-09 | 2014-11-12 | 成都绿迪科技有限公司 | Hydraulic self-adaptive ball bearing |
| CN104141684B (en) * | 2014-01-09 | 2016-08-17 | 成都绿迪科技有限公司 | Hydraulic self-adapting formula ball bearing |
| CN107448481A (en) * | 2017-09-15 | 2017-12-08 | 东方电气风电有限公司 | A kind of blower fan turntable bearing leakproof fat sealing structure |
| CN107448481B (en) * | 2017-09-15 | 2019-03-29 | 东方电气风电有限公司 | A kind of blower turntable bearing leakproof rouge sealing structure |
| CN108007785A (en) * | 2017-12-22 | 2018-05-08 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Wind power bearing sealing ring voltage endurance capability test fixture and method |
| CN110630642A (en) * | 2018-06-21 | 2019-12-31 | 斯凯孚公司 | Bearing assembly with improved sealing ring |
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| Publication number | Publication date |
|---|---|
| CN103062224B (en) | 2015-12-02 |
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Granted publication date: 20151202 Termination date: 20170110 |
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