CN103791038A - Wind power speed increasing gear box with bearings lubricated by grease - Google Patents

Wind power speed increasing gear box with bearings lubricated by grease Download PDF

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Publication number
CN103791038A
CN103791038A CN201210443613.3A CN201210443613A CN103791038A CN 103791038 A CN103791038 A CN 103791038A CN 201210443613 A CN201210443613 A CN 201210443613A CN 103791038 A CN103791038 A CN 103791038A
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CN
China
Prior art keywords
bearing
gear
sides
sealing
planet
Prior art date
Application number
CN201210443613.3A
Other languages
Chinese (zh)
Inventor
吴声震
Original Assignee
吴小杰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 吴小杰 filed Critical 吴小杰
Priority to CN201210443613.3A priority Critical patent/CN103791038A/en
Publication of CN103791038A publication Critical patent/CN103791038A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/28Toothed gearings for conveying rotary motion with gears having orbital motion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D15/00Transmission of mechanical power
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/023Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/029Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/08General details of gearing of gearings with members having orbital motion
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention relates to the technical field of wind power gear boxes, and discloses a wind power speed increasing gear box with bearings lubricated by grease. The wind power speed increasing gear box comprises a speed increasing transmission assembly. The speed increasing transmission assembly comprises a box, an NW planetary gear train and a fixed shaft. The wind power speed increasing gear box is characterized in that two sides of a planetary carrier are respectively supported in an inner hole of a base and an inner hole of a fixing frame by a first bearing and a second bearing, a first sealing part and a second sealing part are arranged on two sides of the first bearing, a third sealing part and a fourth sealing part are arranged on two sides of the second bearing, the second bearing, a third sealing ring and a fourth sealing ring are arranged on an abrasion-resistant ring, and the abrasion-resistant ring is connected to the rear end of an input shaft; two sides of a planetary gear are respectively supported on the fixing frame by a first sealed bearing and a second sealed bearing; two ends of a last-stage driving wheel are respectively supported in an inner hole of a large end cover and an inner hole of a small end cover by a third sealed bearing and a fourth sealed bearing; two sides of an output gear shaft are respectively supported in the inner hole of the large end cover and the inner hole of the small end cover by a fifth sealed bearing and a sixth sealed bearing. The wind power speed increasing gear box has the advantages that the bearings can run reliably, and accordingly a speed reducer is long in service life and low in noise.

Description

Bearing grease lubrication gear of wind power speed-increasing gearbox
[technical field]
The present invention relates to wind turbine gearbox technical field, a kind of bearing grease lubrication gear of wind power speed-increasing gearbox, its novelty is in casing that rolling bearing bearing grease lubricates, the gear oil pressure lubrication of gear engagement pair.
[background technique]
Gear-box is one of wind-powered electricity generation unit three large core technologies.The domestic wind turbine gearbox that has the senior executive of major company to declare and produce reaches defends Rating level, guarantees to run well for 20 years.
But " development of wind turbine gearbox and technical Analysis " (mechanical transmission 2008.06) pointed out: domestic gear-box all moves less than 3 years and shuts down overhaul.
The present invention is the innovation of following background technique:
" gear of wind power speed-increasing gearbox " (ZL200620104224.8)
" planetary gearing wind energy generating speed " (ZL03237681.2)
(1) gear-box in domestic wind-powered electricity generation unit comprises that the problem of background technique is that machine halt trouble rate is high:
Paper " wind-driven generator group wheel box lubricant oil select guide " is pointed out: " machine halt trouble of domestic wind-powered electricity generation unit 80% is because gear-box problem, and the gear-box probability that breaks down is respectively: bearing 81%, gear 14% ... "
Does is the reason that bearing fault rate is high assorted petty? 1. Modern Machining Center can guarantee the machining accuracy of bearing hole completely, therefore can get rid of machining factor; 2. artificer is used to select than the high grade bearing of calculated value, therefore can get rid of bearing load and be less than design factor; 3. gear-box rigger is veteran senior technician mostly, therefore can get rid of gear-box assembly quality factor.
(2) " insufficient lubrication is the main cause that causes bearing early damage " (891 pages of Liu Zejiu " rolling bearing application manual ")
" ... bearing early failue is not often the fatigue ruption that material causes, but pollutant enter bearing inside afterwards lubricated lipid degenerate gradually, on rolling surface of contact, produce due to impression." (" sealing technique of seal deep groove ball bearing " bearing 2009.05)
Radial ball bearing contact stress σ jmax=5000MPa (р. д. not " the rolling bearing handbook " 134 pages of prompt Germania) be gear pair σ jmax=1450MPa 3-4 doubly, therefore the turbidity test of bearing grease (oil) should be far away higher than the lubricant oil of gear.
(1) largest domestic type wind turbine gearbox enterprise---the gear expert of Nanjing High-speed Gear Manufacturing Co., Ltd explicitly points out in patent of invention " input end of wind-driven generator wheel-box " (201110062373.8) application specification:
The iron filings and the impurity that in the running of existing wind-driven generator pitching or Yaw gearbox, produce enter in bearing with lubricant oil, directly affect gear-box working life,
(2) 94 pages of Zhu Xiaolu " Gear Transmission Design handbook ": in power gear transmission, tooth surface is because skimming wear, burn into are overheated etc., thereby occurs that flank of tooth loss is inevitable;
(3) " maintenance of wind-driven generator group wheel box bearing and maintenance ": " have 2mm2 flakey iron filings and a large amount of metallic dusts in operations staff's boarding discovery filter cleaner; The displacement of high speed shaft bearing damage backgear, causes planet carrier flank engagement extremely to be damaged.”
(4) upper 103 pages of Shanghai Machinery College " Fundamentals of Machine Design ": " after gear transmission equipment use a period of time, pull down and can find that wear trace appears in tooth surface; lubricating under poor or the impure condition of lubricant oil especially; wear phenomenon is more obvious ... wearing and tearing are owing to having active force and relative sliding to cause between surface of contact.”
(5) " magnetic drain plug " (ZL200720131393.5) specification point out: in the process of work, often form free iron powder due to after pitch wheel wearing and tearing, accelerate the wearing and tearing of Metal Contact face,
(6) " magnetic drain plug on rail traffic vehicles gear-box " (201120068109.0) specification: the continuous lubricated oil of free metal particle producing in gear engagement is brought gear Surface of action into, accelerate gear wear, directly affect gear-box working life,
(7) " wind power speed-increasing gearbox " (ZL200920112092) specification adopt magnetic plug to carry out in adsorpting lubrication oil free metallic dust;
(8) " transmission mechanism case body lubricant oil iron scurf abrasive grain adsorption plant " (ZL200820083625.9) specification: gear is with unavoidably jagged in course of working, the sliding friction meeting of gear engagement pair produces iron filings abrasive particle ...
(3) require in theory grease lubrication for bearing (or not containing additive mineral oil), gear additive lubricating oil:
(a) 893 pages of Liu Zejiu " rolling bearing application manual ": " when run up or high temperature under the bearing of working; in the time cannot using grease lubrication or when the contiguous another part (as gear) of bearing uses oil lubrication, bearing is just used oil lubrication.”
921 pages: " ... the lubricated general mineral oil with not containing additive of rolling bearing ";
(b) 1087 pages of Zhu Xiaolu " Gear Transmission Design handbook ": the gear under boundary lubrication condition, should use the lubricant oil containing extreme pressure anti-wear additives (additive).
SH/T0017-1990L-FC Grade A bearing oil kinematical viscosity is 90-100; Be that 288-352 is much smaller than gear oil viscosity.
Conclusion: the basic reason that wind turbine gearbox rate of fault is high is that the iron filings and the impurity that produce in gear-box running enter in bearing with lubricant oil, and bearing damage causes gear-box to break down and shuts down, even if having filter and magnetic plug.
(4) stuffing box bearing can prevent that iron filings and impurity from entering in bearing with lubricant oil, guarantees the reliability that gear-box uses.Select the theoretical foundation of stuffing box bearing as follows:
1. " sealing technique of seal deep groove ball bearing " bearing 2009.05: " seal deep groove ball bearing has antipollution, anti-dust, simplifies main machine structure, is convenient to the advantages such as installation and maintenance, is widely used in the field such as motor, Aeronautics and Astronautics.In some matched host machine, the early failue of bearing is not often the fatigue ruption that material causes, but pollutant enter bearing inside afterwards lubricated lipid degenerate gradually, on rolling surface of contact, produce due to impression.”
2. 593 pages of Liu Ze nine " rolling bearing application manual ": " stuffing box bearing both can have an excellent sealing to lubricate environment, also saved complicated lubrication system simultaneously.So at compact structure, the strict position of seal request, all suggestion is used stuffing box bearing.Bearing self seal is good dustproof except having, sealing effect, can also in bearing operation process, not need supply oiling agent and keep good operation state, has reduced maintenance expenses.”
3. 95 pages of Bu Yan " practical bearing technology handbook ": " those compact structures, axial dimension require little, seal request strict, safeguard repairing difficulty, inconvenience adopts the place of additional seal device, can preferentially select stuffing box bearing.”
4. 221 pages of Ai Siman " rolling bearing design and application manual ": " in the time of compact structure, preferably use the radial ball bearing that two sides sealing is housed.The radial ball bearing that two sides seal ring is housed has packed the lubricating grease of the whole life time of enough bearings into.”
1096 pages of Zhu Xiaolu " Gear Transmission Design handbook ": " gear lubricant and gear and other another parts the same working life that has it, the working life of oil product is closely related with applying working condition and maintenance technology again.General industry gear normal operation 2500h. or must change oil for 6 months." 913 pages of Liu Zejiu " rolling bearing application manual ": it is as follows to change fat cycle empirical correlation:
T=1.475·10 6K -0.9908-1.025·10 6K -0.8626(h.)
In formula: COEFFICIENT K=K f.nDm (rmm/s) (ball bearing K f=0.9~1.1), Dm=(D+d)/2, result of calculation: the fat cycle of changing > 2500 (h.) of stuffing box bearing, thereby proved that stuffing box bearing has packed the lubricating grease of the whole life time of enough bearings into.
Motor n 1=1000rpm, NAD:i=6.3, n=158.7rpm, NBD:i=40, n=25rpm change the fat cycle
And for example: ZJ2240 cement ball mill planetary reducer: planet wheel bearing 22352:260 × 540 × 165
Thereby K=K fnDm (rmm/s)=1.0 × 43.6 ÷ 60 × 400=290.7
Therefore change the fat cycle be: T=1.475106K-0.9908~1.025106K-0.8626=5346~7688 (h.)
Rotating speed is lower, changes the fat cycle longer.Motor rotor shaft adopts stuffing box bearing exactly.
[summary of the invention]
A kind of bearing grease lubrication gear of wind power speed-increasing gearbox of grease lubrication, gear oil lubrication for bearing is provided.
[technological scheme]
Planet carrier both sides are bearing in support and fixing frame endoporus with first, second bearing respectively, there is first, second Sealing clutch shaft bearing both sides, there is the 3rd, the 4th Sealing the second bearing both sides, and the second bearing and third and fourth seal ring are contained on wear-resisting ring, and wear-resisting ring connects input shaft rear end; Planetary pinion wheel both sides are bearing on fixing frame with first and second stuffing box bearing respectively; Final stage driving wheel two ends are bearing in respectively large and small end cap endoporus with third and fourth stuffing box bearing; Output gear shaft both sides are bearing in respectively large and small end cap endoporus with the 5th, six stuffing box bearings.
[beneficial effect]
Technique effect is that bearing operation is reliable, thereby retarder long service life, noise are low.
[accompanying drawing explanation]
Fig. 1. embodiment of the present invention structural representation
[embodiment]
Below in conjunction with accompanying drawing, the present invention is encyclopaedized:
With reference to Fig. 1. a kind of bearing grease lubrication gear of wind power speed-increasing gearbox, comprise casing, NW planetary gear train and fixed axis gear pair, described casing comprises support 11 and the fixing frame 10 connecting in turn, large end cap 12 and small end cover 13, described duplex planet train comprises planet carrier 1, uniform planet pin 3, planet wheel 4, ring gear 2 and sun gear 5, described planet wheel 4 is connected in planet pin 3 shaft extension ends, described ring gear 2 is connected with planet carrier 1 disk, described fixed axis gear pair comprises driving wheel 6 and output gear shaft 7, described driving wheel 6 and sun gear 5 splined, speedup drive path: power is inputted by planet carrier 1, drive planet wheel 3 through ring gear 2, planet wheel 4 reaches sun gear 5, after last, exported by output gear shaft 7, it is characterized in that:
Described planet carrier 1 both sides are bearing in support 11 and fixing frame 10 endoporus with first, second bearing 8,9 respectively, there is first, second Sealing 81,82 described clutch shaft bearing 8 both sides, there is the 3rd, the 4th Sealing 91,92 described the second bearing 9 both sides, described the second bearing 9 and the 3rd, the 4th Sealing 91,92 are contained on wear-resisting ring 14, wear-resisting ring 14 connects input shaft 1 rear end, and the major function of wear-resisting ring is to be convenient to disassemble or assemble;
Described planetary pinion is taken turns 3 both sides and is bearing on fixing frame 10 with first, second stuffing box bearing 31,32 respectively;
Described driving wheel 6 two ends are bearing in large and small end cap 12,13 endoporus with third and fourth stuffing box bearing 61,62 respectively;
Described output gear shaft 7 both sides are bearing in large and small end cap 12,13 endoporus with the 5th, six stuffing box bearings 71,72 respectively;
Stuffing box bearing is contact-type radial seal bearing RK or RS or HMS (A) or MHS (A) type, has two kinds of single lip and lips (593 pages of Liu Zejiu " rolling bearing application manual ");
Described Sealing is rotary shaft lip seal or the Che Shi combination seal that is made up of thin lips and teeth shape slip ring+O type circle.
The crown of Che Shi combination seal profile of tooth slip ring is bordering on line with surface of revolution and contacts, and has greatly reduced high speed rotary grinding heat.Thick 0.001~the 0.0025mm of slip surface oil film, a lubricate and unlikely be scraped into drip (leakage), O type circle makes line contact sealing surface wear be able to auto-compensation.Che Shi sealing: pressure 0~30MPa, operating temperature-55~250 ℃.The extensive Ying Yu of excellent specific property such as Che Shi sealing automatic elastic compensating, long lifetime, low friction, nothing leakage are in space flight, metallurgy, field of petrochemical industry (referring to into large elder generation " mechanical design handbook " volume 2 and the relevant paper of Che Shi sealing).

Claims (1)

1. a bearing grease lubrication gear of wind power speed-increasing gearbox, comprise casing, NW planetary gear train and fixed axis gear pair, described casing comprises support (11) and the fixing frame (10) connecting in turn, large end cap (12) and small end cover (13), described NW planetary gear train comprises planet carrier (1), uniform planet pin (3), planet wheel (4), ring gear (2) and sun gear (5), described planet wheel (4) is connected in planet pin (3) shaft extension end, described ring gear (2) is connected with planet carrier (1) disk, described fixed axis gear pair comprises driving wheel (6) and output gear shaft (7), described driving wheel (6) and sun gear (5) splined, speedup drive path: power is inputted by planet carrier (1), drive planet wheel (3) through ring gear (2), planet wheel (4) reaches sun gear (5), finally exported by output gear shaft (7), it is characterized in that:
Described planet carrier (1) both sides use respectively first, second bearing (8,9) to be bearing in support (11) and fixing frame (10) endoporus, there is first, second Sealing (81,82) described clutch shaft bearing (8) both sides, there is the 3rd, the 4th Sealing (91,92) described the second bearing (9) both sides, it is upper that described the second bearing (9) and the 3rd, the 4th Sealing (91,92) are contained in wear-resisting ring (14), and wear-resisting ring (14) connects input shaft (1) rear end;
Described planet pin (3) both sides use respectively first, second stuffing box bearing (31,32) to be bearing on fixing frame (10);
Described driving wheel (6) two ends use respectively the 3rd, the 4th stuffing box bearing (61,62) to be bearing in large and small end cap (12,13) endoporus;
Described output gear shaft (7) both sides use respectively the 5th, the 6th stuffing box bearing (71,72) to be bearing in large and small end cap (12,13) endoporus;
Described stuffing box bearing is contact-type radial seal bearing, as RK or RS or HMS (A) or MHS (A) type;
Described Sealing is rotary shaft lip seal or Che Shi combination seal.
CN201210443613.3A 2012-10-30 2012-10-30 Wind power speed increasing gear box with bearings lubricated by grease CN103791038A (en)

Priority Applications (1)

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CN201210443613.3A CN103791038A (en) 2012-10-30 2012-10-30 Wind power speed increasing gear box with bearings lubricated by grease

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2375822Y (en) * 1998-12-24 2000-04-26 中国人民解放军第四八一三工厂 Oil and liquid lubricating device for electric hub speed reducer of electric bicycle
CN2649869Y (en) * 2003-09-29 2004-10-20 重庆齿轮箱有限责任公司 Planetary-drive wind-power generating speed increasing box
CN2916260Y (en) * 2006-05-31 2007-06-27 杭州前进齿轮箱集团有限公司 Speed-increasing gear box for wind driven generator
CN201161212Y (en) * 2008-02-28 2008-12-10 宁波东力传动设备股份有限公司 Transmission mechanism case body lubricant oil iron scurf abrasive grain adsorption plant
CN201396405Y (en) * 2009-01-05 2010-02-03 杭州前进风电齿轮箱有限公司 Wind power speed increasing box
EP2383480A1 (en) * 2010-04-30 2011-11-02 Winergy AG Planetary gear for a wind power system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2375822Y (en) * 1998-12-24 2000-04-26 中国人民解放军第四八一三工厂 Oil and liquid lubricating device for electric hub speed reducer of electric bicycle
CN2649869Y (en) * 2003-09-29 2004-10-20 重庆齿轮箱有限责任公司 Planetary-drive wind-power generating speed increasing box
CN2916260Y (en) * 2006-05-31 2007-06-27 杭州前进齿轮箱集团有限公司 Speed-increasing gear box for wind driven generator
CN201161212Y (en) * 2008-02-28 2008-12-10 宁波东力传动设备股份有限公司 Transmission mechanism case body lubricant oil iron scurf abrasive grain adsorption plant
CN201396405Y (en) * 2009-01-05 2010-02-03 杭州前进风电齿轮箱有限公司 Wind power speed increasing box
EP2383480A1 (en) * 2010-04-30 2011-11-02 Winergy AG Planetary gear for a wind power system

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Application publication date: 20140514