CN111288088A - Wind generating set becomes oar bearing and protection sealing washer thereof - Google Patents
Wind generating set becomes oar bearing and protection sealing washer thereof Download PDFInfo
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- CN111288088A CN111288088A CN202010194238.8A CN202010194238A CN111288088A CN 111288088 A CN111288088 A CN 111288088A CN 202010194238 A CN202010194238 A CN 202010194238A CN 111288088 A CN111288088 A CN 111288088A
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- 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
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- 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
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
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- 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
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
Abstract
The utility model provides a wind generating set becomes oar bearing protection sealing washer, its has main seal body, boss, multichannel oil seal lip, the straight seal lip of multichannel and a dustproof lip, and compressive capacity is strong, and is sealed respond well, can stop the seepage of the inside lubricating grease of bearing. The protective sealing ring adopts a dust lip, a plurality of oil sealing lips and a plurality of straight sealing lips, so that the leakage resistance of lubricating grease in the variable-pitch bearing to the outside is increased, the protection is set layer by layer, and the leakage of the lubricating grease can be effectively avoided; when the variable-pitch bearing is in the operation process, the sealing structure of the protective sealing ring can promote waste lubricating grease in the bearing to be discharged from the grease discharging hole of the bearing, so that the normal operation of the variable-pitch bearing is ensured.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a variable pitch bearing of a wind generating set and a protective sealing ring of the variable pitch bearing.
Background
The variable pitch bearing is a key component of a variable pitch system of the wind generating set, is arranged at the high altitude of 140 meters, has a severe working environment, and particularly bears huge axial load and radial load and large overturning moment in a storm weather, so that the quality of a product of the variable pitch bearing directly determines whether the wind generating set can normally operate. In order to ensure the reliability of the pitch bearing and prolong the service life of the pitch bearing, the pitch bearing is generally required to be well sealed and lubricated. Along with the increase of the operation time of the wind generating set, the leakage grease problem of different degrees can be caused at the protective sealing ring of the variable pitch bearing due to the reasons that the protective sealing ring of the variable pitch bearing is gradually aged, the internal lubricating grease is gradually deteriorated, the waste grease is not smoothly discharged, the internal pressure is not uniform due to incomplete rotation and the like, and the lubrication of the variable pitch bearing can be poor if the leakage grease is not processed in time, so that the service life of the variable pitch bearing is influenced, and the normal operation of the wind generating set is further influenced.
At present, the structure of the sealing ring used by the pitch bearing of the wind generating set is as disclosed in the Chinese utility model patent of the publication number CN 209026199U, name "a wind power turntable bearing double-lip sealing structure", as shown in FIG. 1: this wind-powered electricity generation carousel bearing has matched with outer lane and inner circle, and the lips sealing washer is adorned between outer lane and inner circle, the outer lane has outer lane terminal surface and outer lane axial plane, and the inner circle has inner circle terminal surface and inner circle axial plane, the lips sealing washer has annular installation handle, dust lip and oil seal lip, the lips sealing washer still has annular outer fender shoulder and interior fender shoulder, and outer fender shoulder and interior fender shoulder have outer annular face and interior annular face respectively towards one side of installation handle, have seted up radial slot in the outer lane axial, radial slot is arranged in to the installation handle, and annular dust lip and oil seal lip support respectively on the lips on the inner circle terminal surface and the inner circle axial plane of inner circle on the lips sealing washer.
The structure of the double-lip sealing ring has two defects: the first defect is that the sealing washer only has one oil seal lip and dust lip, and seal structure is too simple, when becoming the incomplete gyration of oar bearing, inside lubricating grease can move to becoming the oar bearing outside, then from oil seal lip and the play clearance between the oar bearing inner race seepage to the outside. The dustproof lip on the outer side cannot effectively protect leaked grease, so that the lubricating grease in the variable pitch bearing continues to leak to the external space. Along with the long-time operation of the pitch bearing of the wind generating set, lubricating grease in the pitch bearing can continuously leak, so that the lubricating grease in the pitch bearing is seriously lost, and the normal operation of the pitch bearing is further influenced. The second defect is that the installation handle structure of sealing washer does not have effective anticreep and goes out the design, and the installation handle top and bottom has 2 semi-circular spacing bosss, but when becoming oar bearing incomplete gyration, inside lubricating grease can move to becoming the oar bearing outside under the pressure effect, can make the installation handle deviate from the radial slot of inner circle easily to lead to two lip sealing washers to drop from the slewing bearing, cause the problem of the inside lubricating grease of slewing bearing a large amount of seepage, will influence the normal operating of becoming oar bearing finally.
In recent years, various domestic fan manufacturers and wind power bearing suppliers lack cooperation in solving the problem of leakage of grease of the variable pitch bearing, although some research ideas and directions exist, the research is not deep enough and thorough, and the problem of leakage of grease of the variable pitch bearing is not solved or reduced fundamentally and effectively, so that the innovative design of the structure of the protective sealing ring of the conventional variable pitch bearing is necessary, and a new direction or systematized idea is provided for solving the problem of leakage of grease of the variable pitch bearing.
Disclosure of Invention
The invention aims to provide a variable pitch bearing of a wind generating set and a protective sealing ring thereof, which are provided with a plurality of oil sealing lips, a plurality of straight sealing lips and a dust lip, have strong pressure resistance and good sealing effect and can prevent lubricating grease in the bearing from leaking. The protective sealing ring not only can be used for a pitch bearing, but also can be applied to turntable bearings such as a yaw bearing.
In order to achieve the purpose, the variable pitch bearing of the wind generating set and the protective sealing ring thereof adopt the following technical scheme:
a protective sealing ring for a variable-pitch bearing of a wind generating set comprises a main sealing body, a boss, a dust lip, a plurality of oil sealing lips and a plurality of straight sealing lips; the main sealing body is integrally formed with the boss, the dust lip, the plurality of oil sealing lips and the plurality of straight sealing lips;
the lug boss and the dust lip are positioned on the same side of the main sealing body at a certain interval;
the plurality of straight sealing lips are positioned on the other side of the main sealing body and are separated by at least one oil sealing lip;
the multi-channel oil sealing lip is in sealing and abutting connection with a first bearing ring and a second bearing ring of the variable pitch bearing.
Has the advantages that: the protective sealing ring adopts a dust lip, a plurality of oil sealing lips and a plurality of straight sealing lips, so that the leakage resistance of lubricating grease in the variable-pitch bearing to the outside is increased, the protection is set layer by layer, and the leakage of the lubricating grease can be effectively avoided; when the variable-pitch bearing is in the operation process, the sealing structure of the protective sealing ring can promote waste lubricating grease in the bearing to be discharged from the grease discharging hole of the bearing, so that the normal operation of the variable-pitch bearing is ensured.
Preferably, first oil seal lip in the multichannel oil seal lip is located the opposite side of main seal body, for oblique rectangle structure, the lateral surface is bellied cambered surface, and first oil seal lip front end closely supports against with the recess on the excircle surface of first bearing ring, and the end closely supports against with the interior round surface of second bearing ring.
Has the advantages that: the cambered surface protruding outside the first oil seal lip is favorable for offsetting the oil pressure inside the variable pitch bearing; the first oil sealing lip structure can prevent waste lubricating grease in the bearing from leaking from a gap between the oil sealing lip and the bearing inner ring and can also prevent the waste lubricating grease from leaking from a gap between the oil sealing lip and the bearing outer ring.
Preferably, the second of multichannel oil seal lip, the third oil seal lip are located the one end of main sealing body closely supports with the sealed friction groove on the first bearing ring outer periphery and leans on, just the shape of second way, the third oil seal lip with the shape phase-match of sealed friction groove.
Has the advantages that: the second oil sealing lip and the third oil sealing lip rub against the sealing friction groove on the pitch bearing in the running process of the pitch bearing, and no gap exists between the second oil sealing lip and the third oil sealing lip. Because the protective sealing ring is made of nitrile rubber and has certain elasticity, the normal operation of the inner and outer rings of the variable-pitch bearing can be ensured, and the waste grease leaked from the first oil sealing lip can be prevented from continuously leaking to the outside.
Preferably, a fourth oil sealing lip and a fifth oil sealing lip in the multiple oil sealing lips are positioned among the first straight sealing lip, the second straight sealing lip and the third straight sealing lip, are used for separating the three straight sealing lips and are in contact with the embedded groove of the second bearing ring.
Has the advantages that: the fourth oil sealing lip and the fifth oil sealing lip can prevent waste lubricating grease in the variable pitch bearing from continuously leaking to the outside.
Preferably, the dustproof lip is in a fish fin shape, and the tail end of the dustproof lip is tightly abutted to the outer circular surface of the inner ring of the variable pitch bearing.
Has the advantages that: the fin-shaped dust lip can guarantee to closely laminate with the outer periphery of the variable pitch bearing inner ring, has the characteristic of two-way protection, can prevent waste lubricating grease in the variable pitch bearing from continuing to leak to the outside, and can prevent dust, impurities or other harmful substances in the air from entering the bearing, thereby influencing the normal operation of the variable pitch bearing.
Preferably, a first straight seal lip of the plurality of straight seal lips is located between the first oil seal lip and the fourth oil seal lip, and is in contact with the upper surface of the second bearing ring oil slinger. Has the advantages that: the first straight sealing lip can prevent waste lubricating grease in the variable pitch bearing from leaking from a gap between the inner ring and the outer ring of the bearing.
Preferably, a second straight sealing lip of the plurality of straight sealing lips is positioned between the fourth oil sealing lip and the fifth oil sealing lip and is in contact with the upper surface of the second bearing sleeve; and a third straight sealing lip of the plurality of straight sealing lips is positioned on the other side of the fifth oil sealing lip and is in contact with the upper surface of the second bearing sleeve.
Has the advantages that: the second straight sealing lip and the third straight sealing lip can prevent waste lubricating grease in the variable pitch bearing from continuously leaking to the outside.
Preferably, the boss is I-shaped in shape, the upper surface of the boss is planar, and the boss and the dust lip are spaced to leave an operation space of the tool.
Has the advantages that: when the protective sealing ring is installed, an operating tool with a roller structure can be used for rolling along the upper surface of the boss. Because of the boss structure is similar to the I-steel, the boss upper surface is planar simultaneously, and the instrument operating space has been reserved between the dust lip, consequently can guarantee that operating tool can the smooth operation, will protect the sealing washer compaction, guarantee that the protection sealing washer closely supports with the relevant position of becoming oar bearing inner race, outer ring and lean on, and then guarantee the sealed effect of protection sealing washer.
Preferably, the first bearing ring and the second bearing ring are a variable pitch bearing inner ring and a variable pitch bearing outer ring respectively;
or the first bearing ring and the second bearing ring are a variable pitch bearing outer ring and a variable pitch bearing inner ring respectively.
Has the advantages that: the protective sealing rings are arranged at the upper end and the lower end of the variable-pitch bearing inner ring and the outer ring, the directions are opposite, the bearing inner ring and the bearing outer ring are provided with corresponding grooves matched with the grooves, and the protective sealing rings with the same structures can play a role in sealing.
The invention provides a variable-pitch bearing of a wind generating set, which comprises a first variable-pitch bearing ring, a second variable-pitch bearing ring and a variable-pitch bearing protection sealing ring arranged between the first variable-pitch bearing ring and the second variable-pitch bearing ring;
one end of the first variable-pitch bearing ring is provided with an embedded groove and an oil retainer ring, and the other end of the first variable-pitch bearing ring is provided with a sealing friction groove and a groove;
one end of the second variable-pitch bearing ring, which corresponds to one end of the first variable-pitch bearing ring, is provided with a sealing friction groove and a groove, and the other end of the second variable-pitch bearing ring, which corresponds to the other end of the first variable-pitch bearing ring, is provided with an embedded groove and an oil retainer ring;
the pitch bearing protection sealing ring is the wind generating set pitch bearing protection sealing ring.
Has the advantages that: the variable pitch bearing of the generator set with the protective sealing ring can effectively prevent lubricating grease from leaking; when the variable-pitch bearing is in the operation process, the sealing structure of the protective sealing ring can promote waste lubricating grease in the bearing to be discharged from the grease discharging hole of the bearing, so that the normal operation of the variable-pitch bearing is ensured.
In conclusion, the invention provides a wind generating set variable pitch bearing and a protective sealing ring thereof, wherein the protective sealing ring is provided with a main sealing body, a boss, a plurality of oil sealing lips, a plurality of straight sealing lips and a dust preventing lip, has strong pressure resistance and good sealing effect, and can prevent lubricating grease in the bearing from leaking. The protective sealing ring adopts a dust lip, a plurality of oil sealing lips and a plurality of straight sealing lips, so that the leakage resistance of lubricating grease in the variable-pitch bearing to the outside is increased, the protection is set layer by layer, and the leakage of the lubricating grease can be effectively avoided; when the variable-pitch bearing is in the operation process, the sealing structure of the protective sealing ring can promote waste lubricating grease in the bearing to be discharged from the grease discharging hole of the bearing, so that the normal operation of the variable-pitch bearing is ensured.
Drawings
FIG. 1 is a schematic view of a double-lip sealing structure of a wind power turntable bearing in the prior art;
FIG. 2 is an installation schematic diagram of a protective sealing ring of a pitch bearing of a wind generating set according to embodiment 1 of the invention;
FIG. 3 is an enlarged view of a portion of the protective seal ring of FIG. 2;
FIG. 4 is a block diagram of a protective seal ring of the pitch bearing of FIG. 2;
FIG. 5 is a structural diagram of an outer ring matched with a protective sealing ring of the pitch bearing in FIG. 2;
fig. 6 is a structural diagram of an inner ring matched with a protective sealing ring of the pitch bearing in fig. 2.
In the figure: 1-a pitch bearing protective sealing ring, 2-a pitch bearing outer ring, 3-a pitch bearing inner ring, 11-a boss, 12-a main sealing body, 13-a dust lip, 14-a third oil sealing lip, 15-a second oil sealing lip, 16-a first oil sealing lip, 17-a first straight sealing lip, 18-a fourth oil sealing lip, 18 '-a fifth oil sealing lip, 19-a second straight sealing lip, 19' -a third straight sealing lip, 21-an embedded groove, 22-an oil scraper ring, 23-a sealing friction groove, 31-an embedded groove, 32-an oil scraper ring and 33-a sealing friction groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
As shown in fig. 2 and 3, a pitch bearing of a wind generating set comprises a pitch bearing outer ring 2, a pitch bearing inner ring 3, and a pitch bearing protective sealing ring 1 arranged between the pitch bearing outer ring 2 and the pitch bearing inner ring 3 to play a sealing role. The protective sealing ring 1 comprises a main sealing body, a boss, a dust lip, a plurality of oil sealing lips and a plurality of straight sealing lips; the main sealing body is integrally formed with the boss, the dust lip, the plurality of oil sealing lips and the plurality of straight sealing lips; the lug boss and the dust lip are positioned on the same side of the main sealing body at a certain interval; the plurality of straight sealing lips are positioned on the other side of the main sealing body and are separated by one oil sealing lip; and the multi-channel oil sealing lip is in sealing and abutting joint with the first bearing ring and the second bearing ring of the variable pitch bearing.
Specifically, as shown in fig. 4, the protective seal ring 1 for the pitch bearing has an appearance similar to a fish bone shape, and is structurally divided into a boss 11, a main seal body 12, a dust lip 13, a first oil seal lip 16, a second oil seal lip 15, a third oil seal lip 14, a fourth oil seal lip 18, a fifth oil seal lip 18 ', a first straight seal lip 17, a second straight seal lip 19, a third straight seal lip 19' and the like according to the use effect. The variable-pitch bearing protection sealing ring 1 adopts one dustproof lip, five oil sealing lips and three straight sealing lips, so that lubricating grease in the variable-pitch bearing can be effectively sealed, and the leakage of the lubricating grease is avoided. When the variable-pitch bearing is in the operation process, the sealing structure of the protective sealing ring can promote waste lubricating grease in the bearing to be discharged from the grease discharging hole of the bearing, so that the normal operation of the variable-pitch bearing is ensured.
As shown in fig. 2 and 3, when the pitch bearing protective sealing ring 1 is installed, the boss 11 can be rolled by using an operating tool with a roller structure, the structure of the boss 11 is similar to that of an i-steel, and meanwhile, the upper surface of the boss 11 is planar, and a tool operating space is reserved between the upper surface of the boss 11 and the dust lip 13, so that smooth operation of the operating tool can be ensured, the pitch bearing protective sealing ring 1 is compacted, the tight abutting of the pitch bearing protective sealing ring 1 and relevant parts of the pitch bearing outer ring 2 and the pitch bearing inner ring 3 is ensured, and the sealing effect is ensured.
The whole first oil sealing lip 16 is of an inclined rectangular structure, the outer side surface is a convex arc surface, the front end of the first oil sealing lip 16 is tightly abutted against a V-shaped groove on the outer circle surface of the variable pitch bearing inner ring 3, and the tail end of the first oil sealing lip is tightly abutted against the inner circle surface of the variable pitch bearing outer ring 2. The cambered surface protruding out of the first oil seal lip 16 is favorable for offsetting the oil pressure in the variable pitch bearing; the first oil sealing lip 16 structure can prevent the waste lubricating grease in the bearing from leaking from the gap between the oil sealing lip and the variable pitch bearing inner ring 3, and can also prevent the waste lubricating grease from leaking from the gap between the oil sealing lip and the variable pitch bearing outer ring 2.
The second oil seal lip 15 and the third oil seal lip 14 are integrally in a fishtail shape and are tightly abutted to the sealing friction groove 33 on the outer circumferential surface of the inner ring 3 of the pitch bearing. The second oil seal lip 15 and the third oil seal lip 14 rub against the sealing friction groove 33 on the inner ring 3 of the pitch bearing in the operation process of the pitch bearing, and no gap exists between the two parts. Because the pitch bearing protection sealing ring 1 is made of nitrile rubber and has certain elasticity, the normal operation of the inner and outer rings of the pitch bearing can be ensured, and the waste grease leaked from the first oil sealing lip 16 can be prevented from continuously leaking to the outside.
The dustproof lip 13 is similar to a fish fin in shape and structure, and the tail end of the dustproof lip is tightly abutted to the outer circle surface of the variable pitch bearing inner ring 3. The dust lip 13 has the characteristic of bidirectional protection, can prevent waste lubricating grease in the pitch bearing from continuously leaking outwards, and can prevent dust, impurities or other harmful substances in the air from entering the bearing, so that the normal operation of the pitch bearing is influenced.
The first straight sealing lip 17 is in contact with the upper surface of the oil slinger 22 of the outer pitch bearing ring 2. The first straight sealing lip 17 can prevent waste lubricating grease in the variable pitch bearing from leaking from a gap between the inner ring and the outer ring of the bearing.
The fourth oil sealing lip 18 and the fifth oil sealing lip 19' are in contact with the embedded groove 21 of the outer ring 2 of the pitch bearing. The fourth oil sealing lip 18 and the fifth oil sealing lip 19' can prevent waste lubricating grease in the pitch bearing from continuously leaking to the outside.
The second straight sealing lip 19 and the third straight sealing lip 19' are in contact with the upper surface of the outer ring 2 of the pitch bearing. The second straight sealing lip 19 and the third straight sealing lip 19' can prevent waste lubricating grease in the pitch bearing from continuously leaking to the outside.
The shape structure of the boss 11 is similar to that of an I-steel, the upper surface of the boss 11 is planar, and meanwhile, an operation space of a tool is reserved between the boss 11 and the dust lip 13. When the variable-pitch bearing protection sealing ring 1 is installed, an operating tool with a roller structure can be used for rolling along the upper surface of the boss 11, the variable-pitch bearing protection sealing ring 1 is compacted, the variable-pitch bearing protection sealing ring 1 is tightly abutted to the related parts of the variable-pitch bearing inner ring 3 and the variable-pitch bearing outer ring 2, and then the sealing effect of the variable-pitch bearing protection sealing ring 1 is ensured.
As shown in fig. 5, an embedded groove 21, an oil retainer ring 22, a sealing friction groove 23 and a V-shaped groove are arranged on the outer ring 2 of the pitch-variable bearing and respectively and tightly abutted against each part of the protective sealing ring 1 of the pitch-variable bearing, so that the effect of preventing the waste lubricating grease in the pitch-variable bearing from leaking outwards is achieved.
As shown in fig. 6, an embedding groove 31, an oil deflector ring 32, a sealing friction groove 33 and a V-shaped groove are arranged on the inner ring 3 of the pitch bearing and respectively and tightly abutted against each part of the protective sealing ring 1 of the pitch bearing, so that the effect of preventing the waste lubricating grease in the pitch bearing from leaking outwards is achieved.
In conclusion, the variable pitch bearing of the wind generating set and the protective sealing ring thereof are provided, the sealing ring is provided with the main sealing body, the boss, the plurality of oil sealing lips, the plurality of straight sealing lips and the dust preventing lip, the pressure resistance is strong, the sealing effect is good, and the leakage of lubricating grease in the bearing can be avoided. The protective sealing ring adopts a dust lip, a plurality of oil sealing lips and a plurality of straight sealing lips, so that the leakage resistance of lubricating grease in the variable-pitch bearing to the outside is increased, the protection is set layer by layer, and the leakage of the lubricating grease can be effectively avoided; when the variable-pitch bearing is in the operation process, the sealing structure of the protective sealing ring can promote waste lubricating grease in the bearing to be discharged from the grease discharging hole of the bearing, so that the normal operation of the variable-pitch bearing is ensured.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A variable-pitch bearing protection sealing ring of a wind generating set is characterized by comprising a main sealing body, a boss, a dust lip, a plurality of oil sealing lips and a plurality of straight sealing lips; the main sealing body is integrally formed with the boss, the dust lip, the plurality of oil sealing lips and the plurality of straight sealing lips;
the lug boss and the dust lip are positioned on the same side of the main sealing body at a certain interval;
the plurality of straight sealing lips are positioned on the other side of the main sealing body and are separated by at least one oil sealing lip;
the multi-channel oil sealing lip is in sealing and abutting connection with a first bearing ring and a second bearing ring of the variable pitch bearing.
2. The wind generating set variable pitch bearing protective seal ring according to claim 1, wherein a first oil sealing lip of the plurality of oil sealing lips is located on the other side of the main seal body and is of an inclined rectangular structure, the outer side face of the first oil sealing lip is a convex arc face, the front end of the first oil sealing lip is tightly abutted against a groove in the outer circular surface of the first bearing ring, and the tail end of the first oil sealing lip is tightly abutted against the inner circular surface of the second bearing ring.
3. The wind generating set pitch bearing protective sealing ring according to claim 1 or 2, wherein a second oil sealing lip and a third oil sealing lip of the plurality of oil sealing lips are located at one end of the primary sealing body and tightly abut against a sealing friction groove on the outer circumferential surface of the first bearing ring, and the shape of the second oil sealing lip and the shape of the third oil sealing lip are matched with the shape of the sealing friction groove.
4. The wind generating set pitch bearing protective sealing ring according to any one of claims 1 to 3, wherein a fourth oil sealing lip and a fifth oil sealing lip of the plurality of oil sealing lips are positioned between the first straight sealing lip, the second straight sealing lip and the third straight sealing lip, are used for separating the three straight sealing lips and are in contact with the embedded groove of the second bearing ring.
5. The protective sealing ring for the pitch bearing of the wind generating set according to any one of claims 1 to 4, wherein the dustproof lip is in a shape of a fin, and the tail end of the dustproof lip is tightly abutted with the outer circular surface of the first bearing ring.
6. The wind generating set pitch bearing protective seal ring according to claim 4, wherein a first straight seal lip of the plurality of straight seal lips is located between the first oil seal lip and the fourth oil seal lip and is in contact with the upper surface of the second bearing ring oil slinger.
7. The wind generating set pitch bearing protective seal ring according to claim 6, wherein a second straight seal lip of the plurality of straight seal lips is positioned between a fourth oil seal lip and a fifth oil seal lip and is in contact with the upper surface of a second bearing sleeve; and a third straight sealing lip of the plurality of straight sealing lips is positioned on the other side of the fifth oil sealing lip and is in contact with the upper surface of the second bearing sleeve.
8. The protective seal ring for the pitch bearing of the wind generating set according to claim 1, wherein the boss is I-shaped in shape, and the upper surface of the boss is planar and is spaced from the dust lip to leave an operating space for a tool.
9. The wind generating set pitch bearing protective seal ring according to any one of claims 1 to 8, wherein the first bearing ring and the second bearing ring are a pitch bearing inner ring and a pitch bearing outer ring, respectively;
or the first bearing ring and the second bearing ring are a variable pitch bearing outer ring and a variable pitch bearing inner ring respectively.
10. A variable-pitch bearing of a wind generating set is characterized by comprising a first variable-pitch bearing ring, a second variable-pitch bearing ring and a variable-pitch bearing protection sealing ring arranged between the first variable-pitch bearing ring and the second variable-pitch bearing ring;
one end of the first variable-pitch bearing ring is provided with an embedded groove and an oil retainer ring, and the other end of the first variable-pitch bearing ring is provided with a sealing friction groove and a groove;
one end of the second variable-pitch bearing ring, which corresponds to one end of the first variable-pitch bearing ring, is provided with a sealing friction groove and a groove, and the other end of the second variable-pitch bearing ring, which corresponds to the other end of the first variable-pitch bearing ring, is provided with an embedded groove and an oil retainer ring;
the pitch bearing protection sealing ring of the wind generating set according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194238.8A CN111288088A (en) | 2020-03-18 | 2020-03-18 | Wind generating set becomes oar bearing and protection sealing washer thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194238.8A CN111288088A (en) | 2020-03-18 | 2020-03-18 | Wind generating set becomes oar bearing and protection sealing washer thereof |
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| CN111288088A true CN111288088A (en) | 2020-06-16 |
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| CN202010194238.8A Pending CN111288088A (en) | 2020-03-18 | 2020-03-18 | Wind generating set becomes oar bearing and protection sealing washer thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135585A (en) * | 2021-12-09 | 2022-03-04 | 中国铁建重工集团股份有限公司 | Main bearing and sealing structure of heading machine |
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2020
- 2020-03-18 CN CN202010194238.8A patent/CN111288088A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135585A (en) * | 2021-12-09 | 2022-03-04 | 中国铁建重工集团股份有限公司 | Main bearing and sealing structure of heading machine |
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