CN103758900A - Yaw brake disc of wind generating set - Google Patents
Yaw brake disc of wind generating set Download PDFInfo
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- CN103758900A CN103758900A CN201410013733.9A CN201410013733A CN103758900A CN 103758900 A CN103758900 A CN 103758900A CN 201410013733 A CN201410013733 A CN 201410013733A CN 103758900 A CN103758900 A CN 103758900A
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- brake disc
- friction
- generating set
- annular region
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a yaw brake disc of a wind generating set. The yaw brake disc comprises a brake disc body which is divided into a frictional annular region and a non-frictional annular region along the radial direction, the surface of the frictional annular region is full of texture to form a continuous texture surface, and the texture direction is intersected with the tangent direction of the brake disc body. The yaw brake disc is good in bearing capacity, stable in friction performance and capable of lowering vibration and noise.
Description
Technical field
The present invention relates generally to wind power generation field, refers in particular to a kind of yaw brake disc of wind power generating set.
Background technique
Current wind power generating set is all designed with active yawing system, for driving cabin to rotate, makes wind wheel aim at wind direction, obtains maximum wind energy.In yaw system, have the friction catch mechanism of friction plate and yaw brake disc, friction catch mechanism, by frictional force effect, realizes the function under two states: while not going off course, braking and locking, keep cabin angle constant; During yaw maneuver, provide certain damping, guarantee yaw maneuver reposefully.
The friction pair forming between friction plate and yaw brake disc has certain receptance for friction plate performance, surface roughness, dust abrasive dust, greasy dirt etc., when these conditions have change, often cause the unstable of frictional behaviour, the vibration noise phenomenon while showing as yaw maneuver.
It is worth mentioning, the typical feature of wind generating set yaw action is low-speed motion, typical yaw rate (the relative angle speed of brake disc and break) is at 0.3deg/s(0.005rpm) left and right, corresponding (friction area) linear velocity is in 6mm/s left and right, and this low-speed motion can make the aggravation of vibration noise phenomenon.
At present, the reason that causes yaw brake disc to produce vibration noise phenomenon mainly contain following some:
When 1, friction plate produces abrasive dust, abrasive dust can be piled up on the rubbing surface that is distributed in yaw brake disc, and along with yaw maneuver is sandwiched in friction pair, form fine and close hard adamantine layer, when yaw maneuver, can damage friction plate and yaw brake disc rubbing surface, affect frictional behaviour, and produce vibration and noise.
2, the rubbing surface of yaw brake disc is generally processed by modes such as vertical cars, do not do special disposal, therefore can form along the tangential annular processing texture of yaw brake disc at rubbing surface, it while carrying out yaw maneuver due to friction plate, is also the tangential relative movement along yaw brake disc, so this tangential processing texture can cause on the direction of relative movement of friction pair too smooth (roughness is on the low side), easily there is Stribeck friction effect, produce vibration and noise.
3, the structure of current yaw brake disc is general and useless distinguishes friction area (friction plate clamping and sweeping area) with other regions, without isolation structure, cause when pollutants such as having grease or water is fallen other regions of yaw brake disc, pollutant may expand to friction area, engaging friction is secondary, because friction plate is to grease or water sensitive, contaminated rear frictional behaviour can seriously reduce and worsen, and produces vibration and noise.
Summary of the invention
The technical problem to be solved in the present invention is: the deficiency existing for prior art, provides that a kind of bearing capacity is good, stable friction performance, can reduce the yaw brake disc of the wind power generating set of vibration noise.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of yaw brake disc of wind power generating set, comprise brake disc body, described brake disc body is radially divided into friction annular region and non-friction annular region, the surface of described friction annular region is covered with texture, form continuous texture face, the trend of described texture is intersected with the tangential of brake disc body.
Further improvement as technique scheme:
Described texture is a kind of in straight burr, reticulate pattern, cydariform line, random line.
The trend of described straight burr along brake disc body radially.
The upper end of described brake disc body is provided with the annular oil guide groove of relative friction annular region upper surface depression, and described annular oil guide groove is located at non-friction annular region and the upper surface of non-friction annular region and the upper surface of friction annular region are separated.
In described annular oil guide groove, along being circumferentially with more than one oil guiding hole, described oil guiding hole is non-penetrating oil storage hole.
In described annular oil guide groove, edge is circumferentially with more than one oil guiding hole, the oil drainage hole that described oil guiding hole is up/down perforation.
The lower end of described brake disc body is provided with the annular oil removal step that protrudes from friction annular region lower surface, and described annular oil removal step is between friction annular region and annular oil guide groove.
The projecting height of the cup depth of described annular oil guide groove and annular oil removal step is 2～5mm.
Described in each, in oil guiding hole, be arranged with the oil removal cylinder that protrudes from friction annular region lower surface, the inwall of described oil removal cylinder and the inwall of oil guiding hole smoothly join.
Described at least one, oil guiding hole aligns with the connecting bolt of the driftage bearing of wind power generating set.
Compared with prior art, the invention has the advantages that:
1, the present invention is covered with texture by the surface in friction annular region, form continuous texture face, and the trend of texture is intersected with the tangential of brake disc body, can guarantee to there is enough roughness on the direction of relative movement (along brake disc body tangential) of friction plate and yaw brake disc, when yaw maneuver, by the grinding effect of texture, the abrasive dust of accumulating on friction plate is struck off, and slowly discharge equably friction pair, prevent from producing adamantine layer on friction plate, reduce the possibility that occurs Stribeck friction effect, guarantee good frictional behaviour, reduce vibration and noise, and continuous texture face can guarantee the to rub continuity of annular area surfaces, does not produce stress and concentrates, and can not affect the bearing capacity of yaw brake disc,
2, the present invention separates the upper surface of friction annular region and non-friction annular region by oil guide slot, and by annular oil removal step, the lower surface of friction annular region and non-friction annular region is separated, bootable water, wet goods foreign matter leave friction annular region and enter non-friction annular region and stop water, wet goods foreign matter from non-friction annular region engaging friction annular region, thereby reduce water, the impact of wet goods foreign matter on friction pair, guarantee the stability of frictional behaviour, further reduce vibration and noise.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is applied to wind generating set yaw braking system.
Fig. 2 is plan structure schematic diagram of the present invention (oil guiding hole is circular hole).
Fig. 3 is the plan structure schematic diagram (oil guiding hole is long lumbar hole) of the another kind of structure of the present invention.
Fig. 4 is that plan structure schematic diagram is amplified in the part of the present invention when texture is straight burr.
Fig. 5 is that plan structure schematic diagram is amplified in the part of the present invention when texture is cydariform line.
Fig. 6 is that plan structure schematic diagram is amplified in the part of the present invention when texture is reticulate pattern.
Fig. 7 is that plan structure schematic diagram is amplified in the part of the present invention when texture is random line.
Fig. 8 be in Fig. 2 A-A to analysing and observe structure for amplifying schematic diagram.
Fig. 9 is sectional perspective structural representation of the present invention.
Figure 10 is the sectional perspective structural representation (band oil removal cylinder) of the another kind of structure of the present invention.
Marginal data: 1, frame; 2, hydraulic brake; 21, friction plate; 3, driftage drives; 4, driftage bearing; 5, yaw brake disc; 51, brake disc body; 511, friction annular region; 512, non-friction annular region; 513, annular oil guide groove; 514, oil guiding hole; 515, annular oil removal step; 6, oil removal cylinder; 7, connecting bolt.
Embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is described in further detail; should be understood that; protection scope of the present invention is also not only confined to following embodiment; for those skilled in the art; some improvements and modifications without departing from the principles of the present invention, also should be considered as protection scope of the present invention.
The yaw brake disc of wind power generating set of the present invention, is applied on the yaw system of wind power generating set, and referring to Fig. 1, yaw system is mainly comprised of driftage driving 3, driftage bearing 4, yaw brake disc 5 and hydraulic brake 2.Driftage bearing 4 is turntable bearing, and the inner ring of driftage bearing 4 is fixedly connected on by connecting bolt 7 in the frame 1 of wind power generating set, and the band tooth outer ring of driftage bearing 4 is fixedly connected on yaw brake disc 5, also by driftage, drives 3 to drive rotation.Hydraulic brake 2 is held on the upper and lower surface of yaw brake disc 5 by friction plate 21, when yaw brake disc 5 is made yaw maneuver, friction plate 21, with yaw brake disc 5, relative movement occurs, and the direction of relative movement is tangential along yaw brake disc 5.Referring to Fig. 2, yaw brake disc 5 comprises brake disc body 51, and brake disc body 51 is radially divided into friction annular region 511 and non-friction annular region 512, wherein, the band tooth outer ring of driftage bearing 4 is fixedly connected on non-friction annular region 512, and friction plate 21 is held on friction annular region 511.Friction annular region 511 upper, lower surface is all covered with texture, make, lower surface forms continuous texture face, and the trend of texture is intersected with the tangential of brake disc body 51, therefore can guarantee to there is enough roughness on the direction of relative movement of friction plate 21 and yaw brake disc 5, when yaw maneuver, by the grinding effect of texture, the abrasive dust of accumulation on friction plate 21 is struck off, and slowly discharge equably friction pair, prevent from producing adamantine layer on friction plate 21, reduce the possibility that occurs Stribeck friction effect, guarantee good frictional behaviour, reduce vibration and noise.And continuous texture face can guarantee the to rub continuity on annular region 511 surfaces, does not produce stress and concentrates, and can not affect the bearing capacity of yaw brake disc 5.
Referring to Fig. 4 to Fig. 7, in the present embodiment, texture can be realized by controlled working technique and roughness, and texture can have various ways, as trend along straight burr radially of brake disc body 51, trend roughly along brake disc body 51 cydariform line, reticulate pattern or random line radially.
Referring to Fig. 8 to Figure 10, in the present embodiment, the upper end of brake disc body 51 is provided with the annular oil guide groove 513 of relative friction annular region 511 upper surface depressions, and annular oil guide groove 513 is located at non-friction annular region 512 and the upper surface of non-friction annular region 512 and the upper surface of friction annular region 511 are separated.Therefore, can stop the water of non-friction annular region 512 upper surfaces, the upper surface of wet goods foreign matter engaging friction annular region, water, the wet goods foreign matter of friction annular region 511 upper surfaces are also easy to be guided in annular oil guide groove 513, thereby guarantee the frictional behaviour of yaw brake disc 5.
In the present embodiment, in annular oil guide groove 513, along being circumferentially with more than one oil guiding hole 514, oil guiding hole 514 can be circular hole or long lumbar hole (referring to Fig. 2, Fig. 3), and oil guiding hole 514 up/down perforations in the present embodiment form oil drainage hole (referring to Fig. 8).Referring to Fig. 8, Fig. 9, the lower end of brake disc body 51 is provided with the annular oil removal step 515 that protrudes from friction annular region 511 lower surfaces, and annular oil removal step 515 is between friction annular region 511 and annular oil guide groove 513.Wherein, the projecting height of the cup depth of annular oil guide groove 513 and annular oil removal step 515 is preferably 2～5mm.Water, wet goods foreign matter are fallen into after annular oil guide groove 513, can flow out yaw brake disc 5 downwards along oil guiding hole 514, the lower surface that annular oil removal step 515 can anti-sealing, wet goods foreign matter flows to friction annular region 511.
Certainly, for anti-sealing, wet goods foreign matter flow to friction annular region 511 lower surface, also annular oil removal step 515 can be set, and as shown in figure 10, the sheathed one oil removal cylinder 6 that protrudes from friction annular region 511 lower surfaces in each oil guiding hole 514, and the inwall of oil removal cylinder 6 and the inwall of oil guiding hole 514 are smoothly joined, by oil removal cylinder 6, water, wet goods foreign matter are derived.
In other embodiments, oil guiding hole 514 also can be set to non-penetrating oil storage hole, and water, the wet goods foreign matter when repair and maintenance, accumulated in by oil storage hole clean out.
Referring to Fig. 1, in the present embodiment, oil guiding hole 514 aligns with the connecting bolt 7 of driftage bearing 4, for the repair and maintenance of driftage bearing 4 connecting bolts 7 provides great convenience.Because the space between yaw brake disc 5 and driftage bearing 4 is often narrower and small, cause connecting bolt 7 to safeguard inconvenience, therefore by the oil guiding hole 514 aliging with connecting bolt 7 is set, the instruments such as wrench socket can be safeguarded through 514 pairs of connecting bolts 7 of oil guiding hole, greatly increased convenience.And, adopt the oil guiding hole 514 of long lumbar hole form can further improve the working efficiency while safeguarding.
The schematic diagram of the present embodiment all illustrates with the form of built-in off-course brake and built-in yaw brake disc; but put outside in the structural design of off-course brake and external yaw brake disc and also can apply the solution of the present invention, this applicable cases still belongs to protection scope of the present invention.
Claims (10)
1. the yaw brake disc of a wind power generating set, comprise brake disc body (51), described brake disc body (51) is radially divided into friction annular region (511) and non-friction annular region (512), it is characterized in that: the surface of described friction annular region (511) is covered with texture, form continuous texture face, the tangential intersection of the trend of described texture and brake disc body (51).
2. the yaw brake disc of wind power generating set according to claim 1, is characterized in that: described texture is a kind of in straight burr, reticulate pattern, cydariform line, random line.
3. the yaw brake disc of wind power generating set according to claim 2, is characterized in that: the trend of described straight burr along brake disc body (51) radially.
4. according to the yaw brake disc of the wind power generating set described in claim 1 or 2 or 3, it is characterized in that: the upper end of described brake disc body (51) is provided with the annular oil guide groove (513) of relative friction annular region (511) upper surface depression, described annular oil guide groove (513) is located at non-friction annular region (512) and the upper surface of non-friction annular region (512) and the upper surface of friction annular region (511) is separated.
5. the yaw brake disc of wind power generating set according to claim 4, is characterized in that: in described annular oil guide groove (513), along being circumferentially with more than one oil guiding hole (514), described oil guiding hole (514) is non-penetrating oil storage hole.
6. the yaw brake disc of wind power generating set according to claim 4, is characterized in that: in described annular oil guide groove (513), edge is circumferentially with more than one oil guiding hole (514), the oil drainage hole that described oil guiding hole (514) is up/down perforation.
7. the yaw brake disc of wind power generating set according to claim 6, it is characterized in that: the lower end of described brake disc body (51) is provided with the annular oil removal step (515) that protrudes from friction annular region (511) lower surface, and described annular oil removal step (515) is positioned between friction annular region (511) and annular oil guide groove (513).
8. the yaw brake disc of wind power generating set according to claim 7, is characterized in that: the projecting height of the cup depth of described annular oil guide groove (513) and annular oil removal step (515) is 2～5mm.
9. the yaw brake disc of wind power generating set according to claim 6, it is characterized in that: in oil guiding hole described in each (514), be arranged with the oil removal cylinder (6) that protrudes from friction annular region (511) lower surface, the inwall of the inwall of described oil removal cylinder (6) and oil guiding hole (514) smoothly joins.
10. according to the yaw brake disc of the wind power generating set described in claim 6 to 9 any one, it is characterized in that: oil guiding hole described at least one (514) aligns with the connecting bolt (7) of the driftage bearing (4) of wind power generating set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013733.9A CN103758900A (en) | 2014-01-13 | 2014-01-13 | Yaw brake disc of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013733.9A CN103758900A (en) | 2014-01-13 | 2014-01-13 | Yaw brake disc of wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN103758900A true CN103758900A (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410013733.9A Pending CN103758900A (en) | 2014-01-13 | 2014-01-13 | Yaw brake disc of wind generating set |
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| Country | Link |
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| CN (1) | CN103758900A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895972A (en) * | 2015-04-22 | 2015-09-09 | 安徽龙行密封件有限公司 | Clutch friction plate assembly |
| CN106545600A (en) * | 2016-12-08 | 2017-03-29 | 北京金风科创风电设备有限公司 | Wind generating set and yaw braking device, braking system and braking method thereof |
| CN110375019A (en) * | 2019-07-25 | 2019-10-25 | 山东中车风电有限公司 | A kind of wind generating set yaw brake disc and the yaw system including the brake disc |
-
2014
- 2014-01-13 CN CN201410013733.9A patent/CN103758900A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895972A (en) * | 2015-04-22 | 2015-09-09 | 安徽龙行密封件有限公司 | Clutch friction plate assembly |
| CN106545600A (en) * | 2016-12-08 | 2017-03-29 | 北京金风科创风电设备有限公司 | Wind generating set and yaw braking device, braking system and braking method thereof |
| CN106545600B (en) * | 2016-12-08 | 2019-03-15 | 北京金风科创风电设备有限公司 | Wind generating set and yaw braking device, braking system and braking method thereof |
| CN110375019A (en) * | 2019-07-25 | 2019-10-25 | 山东中车风电有限公司 | A kind of wind generating set yaw brake disc and the yaw system including the brake disc |
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Application publication date: 20140430 |