CN203067553U - Grease leakage proof type wind power turntable bearing - Google Patents
Grease leakage proof type wind power turntable bearing Download PDFInfo
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- CN203067553U CN203067553U CN 201320011867 CN201320011867U CN203067553U CN 203067553 U CN203067553 U CN 203067553U CN 201320011867 CN201320011867 CN 201320011867 CN 201320011867 U CN201320011867 U CN 201320011867U CN 203067553 U CN203067553 U CN 203067553U
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Abstract
The utility model discloses a grease leakage proof type wind power turntable bearing and relates to the technical field of wind power bearings. The wind power turntable bearing comprises an inner ring, an outer ring, steel balls, isolation blocks and a seal ring, wherein the steel balls are formed in a cavity formed by rolling ways of the inner ring and the outer ring; the isolation blocks are respectively arranged between the adjacent steel balls; the seal ring is arranged between the inner ring and the outer ring; two rows of rolling ways are arranged on the inner ring; one of the two rows of rolling way is connected with grease inlet holes via a grease inlet channel in the rolling way, and the other row of rolling way is connected with grease outlet holes via a grease outlet channel in the rolling way; the grease inlet holes are formed in the inner ring along the radial direction, and the grease inlet channel is communicated with the inner circumference surface of the inner ring via the grease inlet holes; the grease outlet channel is communicated with the lower end face of the inner ring via the grease outlet holes; and a grease blocking ring is formed between the seal ring and the cavity. By improving the structure of the grease outlet holes of the bearing and adding the structure of the grease blocking ring, the grease leakage proof type wind power turntable bearing solves the problem of grease leakage of the wind power turntable bearing.
Description
Technical field
The utility model relates to the wind power bearing technical field, refers 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 made up of inner ring, outer ring, steel ball, retainer/spacing block and seal ring.At inner ring or upper edge, outer ring radial design fat hole and row's fat hole are arranged, 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 the 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 overcome certain row's fat hole and arrange the fat pipe resistance and just can enter into the 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 tube 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 action 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, there is not safeguard structure between lubricating grease and the seal ring as can be seen, 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 the pressure of the inner die cavity of bearing like this, 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 the wind power generating set main frame and brought very big pollution.
The model utility content
In order to address the above problem, the utility model provides a kind of leakproof fat wind-powered turntable bearing, can prevent the leakage of lubricating grease preferably.
In order to achieve the above object, the technical solution of the utility model 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 constitutes, 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 made up 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 retaining alicyclic ring between described seal ring and the described die cavity.
Described retaining alicyclic ring is arranged on the outer peripheral surface of inner ring, and it is a bulge loop.
Described retaining 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 retaining 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, and the inner ring upper edge is axially arranged with the taper pin-hole that runs through stopper, and the taper pin that is arranged in the taper pin-hole is radially fixing with stopper.The axial screw thread counterbore that design has the gear teeth and along the circumferential direction evenly arranges on the outer ring of bearing.The inner ring upper edge circumference of bearing evenly is provided with axial hole, and these holes are used for bearing and are connected with the installation of main frame.
Beneficial effect: the utility model is provided with the retaining alicyclic ring between the die cavity of bearing sealed ring and bearing race, the retaining alicyclic ring is in order to bear the pressure effect of lubricating grease in the bearing die cavity, avoided the direct pressure effect of lubricating grease to seal ring, thereby the pressure effect of having eliminated owing to lubricating grease makes seal ring be out of shape the lubricating grease leakage phenomenon that causes; And retaining alicyclic ring and seal ring be positioned on inside and outside two circles of bearing, and both directions are opposite, formation loop, labyrinth, and the inside die cavity with bearing is isolated from the outside out effectively, has avoided entering of external dust.Simultaneously, the utility model has improved the structure in row's fat hole, 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 made up of for two sections radial section and axial direction part, 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 utility model.
Fig. 3 is the partial enlarged drawing at place, row's fat hole among Fig. 2.
Fig. 4 is the partial enlarged drawing at retaining 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 retaining 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
Below in conjunction with accompanying drawing the utility model is further specified.
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 constitutes, 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 made up 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 makes 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 retaining alicyclic ring 6 between described seal ring 4 and the described die cavity, retaining 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 retaining alicyclic ring replaces seal ring to bear the pressure effect of lubricating grease, thereby has avoided playing the effect of leakproof fat because the pressure effect of lubricating grease makes the seal ring distortion.
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 retaining 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, and inner ring 5 upper edges are axially arranged with the taper pin-hole that runs through stopper 11, 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 design has the gear teeth and along the circumferential direction evenly arranges on the outer ring 1 of bearing.The inner ring 5 upper edge circumference of bearing evenly are provided with axial hole, and 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) constitutes, 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 made up 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 retaining 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 retaining 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 retaining alicyclic ring (6) is arranged on the inner peripheral surface of outer ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011867 CN203067553U (en) | 2013-01-10 | 2013-01-10 | Grease leakage proof type wind power turntable bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011867 CN203067553U (en) | 2013-01-10 | 2013-01-10 | Grease leakage proof type wind power turntable bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067553U true CN203067553U (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320011867 Expired - Fee Related CN203067553U (en) | 2013-01-10 | 2013-01-10 | Grease leakage proof type wind power turntable bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067553U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062224A (en) * | 2013-01-10 | 2013-04-24 | 河南科技大学 | Grease-leakage-prevention wind electricity turntable bearing |
| CN105020265A (en) * | 2015-08-06 | 2015-11-04 | 国电联合动力技术有限公司 | Pitch bearing of wind turbine generator and anti-corrosion processing method of pitch 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 |
-
2013
- 2013-01-10 CN CN 201320011867 patent/CN203067553U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062224A (en) * | 2013-01-10 | 2013-04-24 | 河南科技大学 | Grease-leakage-prevention wind electricity turntable bearing |
| CN103062224B (en) * | 2013-01-10 | 2015-12-02 | 河南科技大学 | A kind of leakproof fat wind-powered turntable bearing |
| CN105020265A (en) * | 2015-08-06 | 2015-11-04 | 国电联合动力技术有限公司 | Pitch bearing of wind turbine generator and anti-corrosion processing method of pitch 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 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20140110 |