CN102979857A - Bearing-grease lubricating wind-power double-cycloidal variable-pitch speed reducer - Google Patents

Bearing-grease lubricating wind-power double-cycloidal variable-pitch speed reducer Download PDF

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CN102979857A
CN102979857A CN2012104905988A CN201210490598A CN102979857A CN 102979857 A CN102979857 A CN 102979857A CN 2012104905988 A CN2012104905988 A CN 2012104905988A CN 201210490598 A CN201210490598 A CN 201210490598A CN 102979857 A CN102979857 A CN 102979857A
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bearing
cycloidal
double
sealing
stuffing box
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吴小杰
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    • 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

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Abstract

The invention relates to the technical field of wind-power gear boxes and discloses a bearing-grease lubricating wind-power double-cycloidal variable-pitch speed reducer. The bearing-grease lubricating wind-power double-cycloidal variable-pitch speed reducer comprises a machine body and a double-cycloidal transmission piece, wherein the machine body comprises a front machine seat, an inner-cycloidal tooth ring and a rear-end shell; the inner-cycloidal tooth ring and the rear-end shell are connected in sequence; the double-cycloidal transmission piece comprises an input shaft, double eccentric sleeves, cycloidal wheels, an inner-cycloidal tooth ring and a column-pin type output mechanism; and the column-pin type output mechanism comprises a column pin, a column sleeve and an output shaft; and the needle-tooth pins are semi-buried in needle pin holes uniformly distributed on the needle-tooth shell. The bearing-grease lubricating wind-power double-cycloidal variable-pitch speed reducer is characterized in that the input shaft is supported at an inner hole of the rear end cover by using two first sealing bearings; the first cycloidal wheel and the second cycloidal wheel are supported on the double eccentric sleeves by using two second sealing bearings; the output shaft in the column-pin type output mechanism is supported at an inner hole of the front machine seat by using a third sealing bearing; an inner hole of a uniform-loading ring is supported on the outer circle of an inner flange of the rear end cover by using a fourth sealing bearing; and a sealing piece is arranged atin the front of the third sealing bearing. The bearing-grease lubricating wind-power double-cycloidal variable-pitch speed reducer disclosed by the invention has the beneficial effects that the operation of the bearing is reliable, so that the service life is long and the noise is low.

Description

Bearing grease lubricates the wind-powered electricity generation double-cycloid variable-pitch speed reducer
[technical field]
The present invention relates to the wind turbine gearbox technical field, a kind of bearing grease lubricates the wind-powered electricity generation double-cycloid variable-pitch speed reducer, and its novelty is rolling bearing, cycloid wheel engagement pair gear oil pressure lubrication lubricated with bearing grease in the casing.
[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 satellite level level, guarantees normal operation in 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 background technique " wind power generation single-stage pitch control double-cycloid speed reducer " innovation (ZL201010174474.X).
(1) gear-box in the domestic wind-powered electricity generation unit comprises that the problem of background technique is that the machine halt trouble rate is high:
" 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 the gear-box problem, and the gear-box probability that breaks down is respectively: bearing 81%, gear 14% ... "
Is the reason that the bearing fault rate is high assorted petty? 1. Modern Machining Center can guarantee the machining accuracy of bearing hole fully, therefore can get rid of the machining factor; 2. the artificer is used to select than the high grade bearing of calculated value, therefore can get rid of bearing load less than design factor; 3. the 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 the bearing early damage " (891 pages of Liu Zejiu " rolling bearing application manual ")
" ... bearing early failue often is not the fatigue ruption that material causes, but pollutant enter bearing inside afterwards lubricated lipid degenerate gradually, produce due to the impression at the rolling surface of contact." (" sealing technique of seal deep groove ball bearing " bearing 2009.05)
Radial ball bearing contact stress σ jmax=5000MPa (р. д. not prompt Germania " 134 pages of rolling bearing handbook) be gear pair σ jmax=1450MPa 3-4 doubly, so the turbidity test of bearing grease (oil) should be higher than the lubricant oil of gear far away.
(1) " input end of wind-driven generator wheel-box " (201110062373.8) explicitly point out: the iron filings and the impurity that produce in existing wind-driven generator pitching or the Yaw gearbox running enter in the bearing with lubricant oil, directly affect gear-box working life ...;
(2) " 94 pages of Gear Transmission Design handbook: in the power gear transmission, tooth surface is because skimming wear, burn into are overheated etc., thereby flank of tooth loss to occur be inevitable for Zhu Xiaolu;
(3) Shanghai Machinery College " Fundamentals of Machine Design " is upper 103 pages: " pull down after gear transmission equipment use a period of time and can find that wear trace appears in tooth surface; lubricating under relatively 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 the surface of contact.”
(3) require in theory bearing with grease lubrication (or not containing additive mineral oil), the gear additive lubricating oil:
(a) Liu Zejiu " rolling bearing application manual " is 893 pages: " when run up or high temperature under the bearing of working, in the time can't using grease lubrication or bearing contiguous part (such as gear) is when using oil lubrication in addition, bearing is just used oil lubrication.”
921 pages: " ... the lubricated general mineral oil with not containing additive of rolling bearing ";
(b) Zhu Xiaolu " 1087 pages of Gear Transmission Design handbook: be in the gear under the boundary lubrication condition, should use the lubricant oil that contains 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.
(4) stuffing box bearing can prevent that iron filings and impurity from entering in the 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: " stuffing box bearing has the advantages such as antipollution, simplified structure, is widely used in fields such as motor, Aeronautics and Astronautics.Some matched host machine bearing early failues often are not that material causes, but pollutant enter bearing inside afterwards lubricated lipid degenerate gradually, produce due to the impression at the rolling surface of contact.”
2. Liu Ze nine " rolling bearing application manual " is 593 pages: " the stuffing box bearing self seal except having excellent sealing effect, can also not need the supply oiling agent in the bearing operation process and keep the good operation state, reduced maintenance expenses.”
3. Bu Yan " 95 pages of practical bearing technology handbook: " and those compact structures, axial dimension require little, seal request strict, safeguard the repairing difficulty, the place of additional seal device is adopted in inconvenience, can preferentially select stuffing box bearing.”
4. Ai Siman " rolling bearing design and application manual " is 221 pages: " when compact structure, preferably use the radial ball bearing that the two sides sealing is housed.The radial ball bearing that the two sides seal ring the is housed lubricating grease of the whole life time of enough bearings of having packed into.”
" 1096 pages of Gear Transmission Design handbook: " lubricant oil the same working life that it is arranged with gear, oil product working life and applying working condition and maintenance technology are closely related for Zhu Xiaolu.General industry gear normal operation 2500h. or must change oil in 6 months.”
913 pages of Liu Zejiu " rolling bearing application manual " provide Fig. 7-3 bearing and change fat cycle experience curve, existing it are transformed to following fitting formula: T=1.47510 for ease of using 6K -0.9908~1.02510 6K -0.8626(h.)
In the formula: COEFFICIENT K=K fNDm (rmm/s) (ball bearing K f=0.9~1.1), Dm=(D+d)/2, result of calculation: stuffing box bearing change fat cycle>2500 (h.), thereby proved packed into the lubricating grease of the whole life time of enough bearings of stuffing box bearing.
Motor n 1=1000rpm, NAD:i=6.3, n=158.7rpm, NBD:i=40, n=25rpm change the fat cycle
Figure BSA00000812881300021
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
So change the fat cycle be: T=1.475106K-0.9908~1.025106K-0.8626=5346~7688 (h.) rotating speed is lower, and it is longer to change the fat cycle.Motor rotor shaft adopts stuffing box bearing exactly.
[summary of the invention]
Provide a kind of bearing to lubricate the wind-powered electricity generation double-cycloid variable-pitch speed reducer with grease lubrication, gear with the bearing grease of oil lubrication.
[technological scheme]
Input shaft is bearing in the rear end cover endoporus with two the first stuffing box bearings; First, second cycloid wheel is bearing on two eccentric bushings with two the second stuffing box bearings; Output shaft is bearing in front support endoporus with the 3rd stuffing box bearing in the pin-type load output mechanism, all carries the ring endoporus and is bearing on the rear end cover inward flange cylindrical with the 4th stuffing box bearing, is provided with Sealing before the 3rd stuffing box bearing.
[beneficial effect] technique effect is that bearing operation is reliable, thereby retarder long service life, noise are low.
[description of drawings] Fig. 1. embodiment of the invention structural representation
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1. a kind of bearing grease lubricates the wind-powered electricity generation double-cycloid variable-pitch speed reducer, comprise body and double cycloid driving component, described body comprises front support 1 and the hypocycloid gear ring 14 and rear end cover 11 that connect in turn, described double cycloid driving component comprises input shaft 9, is contained in two eccentric bushings 15, first, second cycloid wheel 5, hypocycloid gear ring 14 and pin-type load output mechanism on the input shaft 9, described pin-type load output mechanism comprises pin 13, column sleeve 12 and output shaft 3, it is characterized in that:
Two the first stuffing box bearings 8 of described input shaft 9 usefulness are bearing in rear end cover 11 endoporus;
Described first, second cycloid wheel 5 all is bearing on two eccentric bushings 15 with two the second stuffing box bearings 6;
Output shaft 3 usefulness the 3rd stuffing box bearing 2 is bearing in front support 1 endoporus in the described pin-type load output mechanism, all carries ring 7 endoporus and is bearing on the rear end cover 11 inward flange cylindricals with the 4th stuffing box bearing 10, is provided with Sealing 4 before described the 3rd stuffing box bearing 2;
Stuffing box bearing is contact-type radial seal bearing RK or RS or HMS (A) or MHS (A) type, and two kinds of single lip and lips (593 pages of Liu Zejiu " rolling bearing application manual ") are arranged;
Described Sealing is rotary shaft lip seal or by Che Shi combination seal that thin lips and teeth shape slip ring+O type circle forms.
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 being scraped into dripped (leakage), O type circle makes the 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 (seeing into large elder generation " mechanical design handbook " volume 2 and the relevant paper of Che Shi sealing for details).

Claims (1)

1. a bearing grease lubricates the wind-powered electricity generation double-cycloid variable-pitch speed reducer, comprise body and double cycloid driving component, hypocycloid gear ring (14) and rear end cover (11) that described body comprises front support (1) and connects in turn, described double cycloid driving component comprises input shaft (9), be contained in the two eccentric bushings (16) on the input shaft (9), first, two cycloid wheel (5), hypocycloid gear ring (14) and pin-type load output mechanism, the pin-type load output mechanism comprises pin (13), column sleeve (12) and output shaft (3) is characterized in that:
Described input shaft (9) is bearing in rear end cover (11) endoporus with two the first stuffing box bearings (8);
Described first, second cycloid wheel (5) all uses two the second stuffing box bearings (6) to be bearing on two eccentric bushings (16);
Output shaft (3) is bearing in front support (1) endoporus with the 3rd stuffing box bearing (2) in the described pin-type load output mechanism, all carrying ring (7) endoporus is bearing on rear end cover (11) the inward flange cylindrical with the 4th stuffing box bearing (10), described the 3rd stuffing box bearing (2) is provided with Sealing (4) before, described stuffing box bearing is contact-type radial seal bearing, such as RK or RS or HMS (A) or MHS (A) type, described Sealing is rotary shaft lip seal or Che Shi combination seal.
CN2012104905988A 2012-11-17 2012-11-17 Bearing-grease lubricating wind-power double-cycloidal variable-pitch speed reducer Pending CN102979857A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235323A (en) * 2014-08-06 2014-12-24 吴小杰 Cycloid speed reducer of output shaft supported by zinc-base alloy bearing
CN104295715A (en) * 2014-08-06 2015-01-21 吴小杰 Inner cycloid speed reducer of zinc base alloy bearing supporting output shaft
CN104482121A (en) * 2014-07-06 2015-04-01 吴小杰 Box body interlayer water-cooled type small-tooth-difference reducer box of heavy duty plate feeder
CN104482122A (en) * 2014-07-06 2015-04-01 吴小杰 Box body interlayer water-cooled type inner cycloidal reducer box of heavy duty plate feeder
CN104675976A (en) * 2014-06-28 2015-06-03 吴小杰 Box body interlayer water cooling large thermal power cycloid reduction box
CN104675975A (en) * 2014-06-28 2015-06-03 吴小杰 Box body interlayer water cooling large thermal power cycloid reduction box
CN104728410A (en) * 2014-06-28 2015-06-24 吴小杰 Box body interlayer air cooling high thermal power hypocycloidal reduction box
CN104930176A (en) * 2014-03-21 2015-09-23 罗伯特·博世有限公司 Planetary gear transmission device
CN105570391A (en) * 2016-03-07 2016-05-11 东莞市富宝机电科技有限公司 Conjugated speed reduction transmission mechanism
CN105889473A (en) * 2016-04-14 2016-08-24 浙江恒丰泰减速机制造有限公司 Precise double-shaft transmission mechanism
CN108458054A (en) * 2018-06-20 2018-08-28 上海乐白机器人有限公司 The cycloidal reducer that back clearance compensates automatically

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1428524A (en) * 2001-12-26 2003-07-09 陈光武 Planetary steel ball stepless transmission device
US20070265133A1 (en) * 2006-05-11 2007-11-15 Hansen Transmissions International, Naamloze Vennootschap Gearbox for a wind turbine
CN201193658Y (en) * 2008-04-23 2009-02-11 陆连运 Three-lip contact type sealed bearing
JP2009250213A (en) * 2008-04-10 2009-10-29 Mitsubishi Heavy Ind Ltd Wind turbine generator
CN101813164A (en) * 2010-05-01 2010-08-25 吴声震 Wind power generation single-stage pitch control double-cycloid speed reducer
CN102192279A (en) * 2011-04-02 2011-09-21 吴小杰 Soil pressure balance shield machine cycloid speed reducer
CN202349108U (en) * 2011-10-27 2012-07-25 上海减速机械厂有限公司 Cycloid pin gear planetary reducer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1428524A (en) * 2001-12-26 2003-07-09 陈光武 Planetary steel ball stepless transmission device
US20070265133A1 (en) * 2006-05-11 2007-11-15 Hansen Transmissions International, Naamloze Vennootschap Gearbox for a wind turbine
JP2009250213A (en) * 2008-04-10 2009-10-29 Mitsubishi Heavy Ind Ltd Wind turbine generator
CN201193658Y (en) * 2008-04-23 2009-02-11 陆连运 Three-lip contact type sealed bearing
CN101813164A (en) * 2010-05-01 2010-08-25 吴声震 Wind power generation single-stage pitch control double-cycloid speed reducer
CN102192279A (en) * 2011-04-02 2011-09-21 吴小杰 Soil pressure balance shield machine cycloid speed reducer
CN202349108U (en) * 2011-10-27 2012-07-25 上海减速机械厂有限公司 Cycloid pin gear planetary reducer

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104930176A (en) * 2014-03-21 2015-09-23 罗伯特·博世有限公司 Planetary gear transmission device
CN104675976A (en) * 2014-06-28 2015-06-03 吴小杰 Box body interlayer water cooling large thermal power cycloid reduction box
CN104675975A (en) * 2014-06-28 2015-06-03 吴小杰 Box body interlayer water cooling large thermal power cycloid reduction box
CN104728410A (en) * 2014-06-28 2015-06-24 吴小杰 Box body interlayer air cooling high thermal power hypocycloidal reduction box
CN104482121A (en) * 2014-07-06 2015-04-01 吴小杰 Box body interlayer water-cooled type small-tooth-difference reducer box of heavy duty plate feeder
CN104482122A (en) * 2014-07-06 2015-04-01 吴小杰 Box body interlayer water-cooled type inner cycloidal reducer box of heavy duty plate feeder
CN104235323A (en) * 2014-08-06 2014-12-24 吴小杰 Cycloid speed reducer of output shaft supported by zinc-base alloy bearing
CN104295715A (en) * 2014-08-06 2015-01-21 吴小杰 Inner cycloid speed reducer of zinc base alloy bearing supporting output shaft
CN105570391A (en) * 2016-03-07 2016-05-11 东莞市富宝机电科技有限公司 Conjugated speed reduction transmission mechanism
CN105889473A (en) * 2016-04-14 2016-08-24 浙江恒丰泰减速机制造有限公司 Precise double-shaft transmission mechanism
CN108458054A (en) * 2018-06-20 2018-08-28 上海乐白机器人有限公司 The cycloidal reducer that back clearance compensates automatically

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