CN104728349A - Box body interlayer air cooling high thermal power differential planetary reduction box - Google Patents
Box body interlayer air cooling high thermal power differential planetary reduction box Download PDFInfo
- Publication number
- CN104728349A CN104728349A CN201510078933.7A CN201510078933A CN104728349A CN 104728349 A CN104728349 A CN 104728349A CN 201510078933 A CN201510078933 A CN 201510078933A CN 104728349 A CN104728349 A CN 104728349A
- Authority
- CN
- China
- Prior art keywords
- box body
- casing
- inner cylinder
- gear
- thermal power
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0416—Air cooling or ventilation
-
- 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear
-
- 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
- F16H—GEARING
- F16H2700/00—Transmission housings and mounting of transmission components therein; Cooling; Lubrication; Flexible suspensions, e.g. floating frames
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to an improvement on a differential planetary reducer. A box body interlayer air cooling high thermal power differential planetary reduction box comprises a box body, an input shaft, a transmission mechanism and an output shaft, wherein the input shaft, the transmission mechanism and the output shaft are arranged in the box body and are in successive transmission. The box body interlayer air cooling high thermal power differential planetary reduction box is characterized in that a connecting part of an inner cylinder and a circular end cover is arranged in the box body, a flange of the inner cylinder is connected with the output end face of the box body, an outer circle of the input end of the circular end cover is in close fit with an inner hole of the input end of the box body, the input end face of the circular end cover and the input end of the box body are in seal connection through the same annular pad, the inner wall of the box body and the outer wall of the connecting part of the inner cylinder and the circular end cover form an interlayer, a draught fan is arranged on the lateral part of the box body, an exhaust window is arranged on the top of the box body, the input shaft is supported in the circular end cover through a bearing, the output shaft is supported in the inner cylinder through a bearing, and the transmission mechanism comprises a differential assembly and a standard planet assembly, and each assembly comprises a sun wheel, a planet wheel, a planet carrier and an inner tooth ring. The box body interlayer air cooling high thermal power differential planetary reduction box has the technical advantages that heat in the interlayer is exhausted from the exhaust window and meanwhile transferred to the uniform thin-walled cylinder of the box body to be dissipated to the outside of the box body, the heat dissipation area extends all over the box body, the structure is simple, and manufacturing cost is low.
Description
[technical field]
The present invention relates to differential planetary combination train to improve, the air-cooled large thermal power differential planetary speed reducer of a kind of casing interlayer.
[background technique]
Prior art differential planetary combined speed reducer is mainly used in the traveling speed reducer of engineering machinery.The power of differential planetary is similar to be shunted from differential, quasi-planet two ring gear respectively by one to three, thus has more high bearing capacity than NBD planet.
Prior art major defect is: because existing differential planetary retarder does not adopt cooling measure, natural heat dissipation is only relied on to cause thermal power low, user is had to increasing one, two types number carry out type selecting, many mechanical theory monographs are exactly specify so, its result necessarily increases expense, power is larger, expense increase is more, now for NBD planetary reduction box: if specified type is NBD900 type (thermal power 176kW, weight 5.6t., valency 16.5 ten thousand yuan), now strengthen a type number and select NBD1000 (thermal power 230kW, weight 8.1t., valency 230,000 yuan), result: weight increases 2.5t, price increases 6.5 ten thousand yuan.
As can be seen here, the structure for increasing thermal power prior art must be improved.
Thermal power be enclosed retarder under lubricant oil balanced temperature conditions the peak output that can transmit continuously.Thermal power should equal or be bordering on the power that real work is transmitted.(" Gear Transmission Design handbook " 972 pages)
Input power when thermal power refers to that under natural cool condition lubricating oil temperature is no more than allowable temperature.Thermal power is the important parameter of design lubrication system, is the important evidence selecting retarder.(" design and manufaction of Planetary Involute Gear " 230 pages)
" the thermal power analyses of four Ring-plate Pin-cycloid Gear Planetary Transmission retarders " are pointed out: rely on outer surface natural heat dissipation to be difficult to meet the demands under high-speed overload, cause operating temperature too high, and lubrication system lost efficacy.(Dalian Railway University's report 2005.03)
High oil temperature is one of speed reducer fault very major reason, this is because: oil temperature high viscosity declines, oily emulsification, local oil film breakdown, and lubrication failure causes On Gear Scoring, spot corrosion and inordinate wear; Oil carbon, forms dregs; The high gear anomalies that causes of oil temperature is worn and torn, and inordinate wear makes oil temperature raise, and vicious circle like this, speed reducer is premature breakdown within useful life period.
The highest allowable temperature of reduction gear box lubricating oil sump is about 70 DEG C, and it is according to having three:
(1) German PPSC1290-MY type wind turbine gearbox: lubricating oil sump maximum temperature is 70 DEG C;
(2) the highest oil temperature 70 DEG C (" thermal power of gear of wind power speed-increasing gearbox calculates case " wind-power electricity generation 2003.3) of gear of wind power speed-increasing gearbox expectation
(3) certain 1.25MW unit oil temperature supervisory system domestic: when gearbox lubrication oil temperature is more than 75 DEG C, supervisory system sends alarm signal.(" wind-driven generator group wheel box lubricating oil temperature supervisory system " Shanghai Dian Ji University journal 2008.12)
[summary of the invention]
For solving the low defect of prior art thermal power, the object of the invention is to provide with air-cooled alternative natural heat dissipation in casing interlayer to improve thermal power, the air-cooled large thermal power differential planetary speed reducer of a kind of casing interlayer.
For achieving the above object, implementer's case system that the present invention takes proposes according to the following discussion that thermal power can be made to be not less than mechanical output about cooling heat radiator:
" Gear Transmission Design handbook " 973 pages: the size of thermal power is relevant with cooling measure, if adopt circulating oil lubrication, cooler and externally mounted fuel tank enough large, thermal power can be not less than mechanical output;
" Gear Transmission Design handbook " 1048 pages: adopt outer circulation radiation system: lubricant oil → oil pump in fuel tank → consider oily device → fan cooled → oil to enter fuel tank, as long as fuel delivery and pectinid amount are enough large, retarder even can not be heated Power Limitation;
Research thermal power correction formula P=B
refb
vb
ab
tp
q(kW) find: adopt enough high wind speed by casing Oil-temperature control about 70 DEG C time, retarder thermal power P can improve 1.5 times, this is because:
(A) as air velocity v>=3.8m/s, correction factor B
v=1.90, than B during v=0.5 ~ 1.4m/s
v=1.0 improve nearly one times, that is thermal power P improves nearly one times.As: little axial-flow blower 150FZY type wind speed v=7.6m/s;
(B) during reduction gear box oil temperature 70 DEG C, oil temperature coefficient B
t=0.667, make thermal power improve 50%.
(in formula: B
ref, B
v, B
aand B
tbe respectively ambient temperature, air velocity, altitude and the highest oil temperature correction factor, wherein: B
t=0.00236C
1.32845=0.667 (70 DEG C).(" Gear Transmission Design handbook " 979 pages)
SSX planetary reducer (N=500kW) does not have water source due to underground coal mine, adopts following measure: radiating fin established by increasing casing, casing; Input shaft dress fan.(" design of SSX series Hardened gear face plane table thermoconductivity meter cooling system and application " coal mine machinery 2008.09)
For achieving the above object, implementer's case of taking of the present invention is as follows:
The link of inner cylinder and nose circle lid is provided with in described casing, described inner cylinder flange is connected with casing output end face, the input end cylindrical of described nose circle lid and casing input end endoporus close-fitting, the nose circle face of described nose circle lid input end face and casing input end is tightly connected with same circle ring disk, and described inner cylinder and nose circle lid attachments outer surface are provided with radiating fin;
The outer wall of described inner cylinder and nose circle lid attachments and the inwall of casing enclose to connect and form airtight interlayer, and described casing top is provided with the exhausting window of UNICOM's closed interlayer, and the side of described casing is provided with the axial-flow blower with closed interlayer UNICOM;
The body of described casing and inner cylinder is wall thickness δ=(1.1 ~ 1.3) (T
2)
0.25(mm) even thin-wall circular cylindrical shell (T
2output torque, Nm), cylindrical body has high mechanical properties and excellent heat dispersion performance (Cheng great Xian " mechanical design handbook " rolls up 3.14-485 page);
Described input, first and second bearing of shaft are bearing in nose circle lid endoporus and inner cylinder output terminal endoporus respectively;
Further, described driving mechanism comprises differential component and quasi-planet parts, described differential component comprises the sun gear be located on input shaft, planet wheel, spider gear shaft, first ring gear and planet carrier, described quasi-planet parts comprise accurate sun gear, there won't be any problem star-wheel, foresight wheel shaft, second ring gear and there won't be any problem carrier, described planet carrier internal spline connects with accurate sun gear external splines, described accurate sun gear together with planet carrier empty set on input shaft, described there won't be any problem carrier is fastened on nose circle and covers, described first, two ring gears are two gear rings adjacent in ring gear, the two gear ring numbers of teeth, modulus is equal, described ring gear is connected with output shaft disk.
Although each independent technical characteristics of the present invention is completely known, support each other, and following Advantageous Effects known to those skilled in the art can be produced:
(1) outer wall of inner cylinder and nose circle lid encloses and connects formation closed interlayer, heat in closed interlayer is discharged by exhausting window on the one hand, the even thin walled cylinder passing to box-like body is on the other hand dispersed into outside casing, cold wind capacity is large, heat diffusion area is large throughout whole casing, thermal power, structure is simple, controls, reliability is high, low cost of manufacture;
(2) thermal power can be made to be not less than the discussion of mechanical output according to cooling heat radiator, the present invention, by the correct calculating to air quantity, wind speed, can accomplish that thermal power is not less than mechanical output;
(3) when oil in casing controls at about 70 DEG C, the unlikely decline of oil temperature high viscosity, oil film is not damaged, thus ensures that wheel tooth mesh pair runs well under being in good lubrication state always, makes speed reducer have long useful life period.
[accompanying drawing explanation]
Fig. 1. embodiment of the present invention structural representation
Fig. 2 .. embodiment of the present invention casing 1 top establishes air outlet window P and side to establish air inlet fan F structural representation
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1. the air-cooled large thermal power differential planetary speed reducer of a kind of casing interlayer, comprises casing 1 and to be arranged in casing 1 and the input shaft 15 of transmission successively, driving mechanism and output shaft 5, it is characterized in that:
Inner cylinder 2 and nose circle lid 6 link is provided with in described casing 1, described inner cylinder 2 flange is connected with casing 1 output end face, described nose circle lid 6 input end cylindrical and casing 1 input end endoporus close-fitting, the same circle ring disk 14 of described nose circle lid 6 input end face and casing 1 input end nose circle face is tightly connected, and described inner cylinder 2 is provided with radiating fin with nose circle lid 6 outer surface;
Described inner cylinder 2 encloses with the outer wall of nose circle lid 6 link and the inwall of casing 1 and connects formation closed interlayer, described casing 1 top is provided with the exhausting window P of UNICOM's closed interlayer, the side of described casing 1 is provided with the axial-flow blower F with closed interlayer UNICOM, with the temperature rise of driving component in air cooling inner cylinder 2, its technique effect is that structure is simple, cost is low;
Described casing 1 is wall thickness δ=(1.1 ~ 1.3) (T with the body of inner cylinder 2
2)
0.25(mm) even thin-wall circular cylindrical shell (T
2output torque, Nm), cylindrical body has high mechanical properties and excellent heat dispersion performance (Cheng great Xian " mechanical design handbook " rolls up 3.14-485 page);
Described input, first and second bearing 13,4 of shaft 15,5 are bearing in nose circle lid 6 respectively with in inner cylinder 2 output terminal;
Described driving mechanism comprises differential component and quasi-planet parts, described differential component comprises the sun gear 20 be located on input shaft 15, planet wheel 7, spider gear shaft 8, first ring gear and planet carrier 16, described quasi-planet parts comprise accurate sun gear 12, there won't be any problem star-wheel 10, foresight wheel shaft 11, second ring gear and there won't be any problem carrier 17, described planet carrier 16 internal spline connects with accurate sun gear 12 external splines, described accurate sun gear 12 together with planet carrier 16 empty set on input shaft 15, described there won't be any problem carrier 17 is fastened on nose circle lid 6, described first, two ring gears are two gear rings adjacent in ring gear 9, the two gear ring numbers of teeth, modulus is equal, described ring gear 9 is connected with output shaft 5 disk.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (1)
1. the air-cooled large thermal power differential planetary speed reducer of casing interlayer, comprise casing (1) and to be arranged in casing (1) and the input shaft (15) of transmission successively, driving mechanism and output shaft (5), it is characterized in that:
The link of inner cylinder (2) and nose circle lid (6) is provided with in described casing (1), described inner cylinder (2) flange is connected with casing (1) output end face, the input end cylindrical of described nose circle lid (6) and casing (1) input end endoporus close-fitting, the nose circle face of described nose circle lid (6) input end face and casing (1) input end is tightly connected with same circle ring disk (14), and described inner cylinder (2) and nose circle lid (6) link outer surface are provided with radiating fin;
Described inner cylinder (2) encloses to connect with the outer wall of nose circle lid (6) link and the inwall of casing (1) and forms airtight interlayer, described casing (1) top is provided with the exhausting window (P) of UNICOM's closed interlayer, and the side of described casing (1) is provided with and the axial-flow blower of closed interlayer UNICOM (F);
Described casing (1) is wall thickness δ=(1.1 ~ 1.3) (T with the body of inner cylinder (2)
2)
0.25(mm) even thin-wall circular cylindrical shell (T
2for speed reducer output torque, Nm);
Described input shaft (15) clutch shaft bearing (13) is bearing in nose circle lid (6) endoporus, and described output shaft (5) the second bearing (4) is bearing in inner cylinder (2) output terminal endoporus;
Described driving mechanism comprises differential component and quasi-planet parts, described differential component comprises the sun gear (20) be located on input shaft (15), planet wheel (7), spider gear shaft (8), first ring gear and planet carrier (16), described quasi-planet parts comprise accurate sun gear (12), there won't be any problem star-wheel (10), foresight wheel shaft (11), second ring gear and there won't be any problem carrier (17), described planet carrier (16) internal spline connects with accurate sun gear (12) external splines, described accurate sun gear (12) together with planet carrier (16) empty set on input shaft (15), described there won't be any problem carrier (17) is fastened on nose circle lid (6), described first, two ring gears are two gear rings adjacent in ring gear (9), the two gear ring numbers of teeth, modulus is equal, described ring gear (9) is connected with output shaft (5) disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078933.7A CN104728349A (en) | 2014-06-28 | 2015-02-13 | Box body interlayer air cooling high thermal power differential planetary reduction box |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014103180646 | 2014-06-28 | ||
| CN201410318064 | 2014-06-28 | ||
| CN201510078933.7A CN104728349A (en) | 2014-06-28 | 2015-02-13 | Box body interlayer air cooling high thermal power differential planetary reduction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104728349A true CN104728349A (en) | 2015-06-24 |
Family
ID=53452572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510078933.7A Pending CN104728349A (en) | 2014-06-28 | 2015-02-13 | Box body interlayer air cooling high thermal power differential planetary reduction box |
Country Status (1)
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|---|---|
| CN (1) | CN104728349A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179606A (en) * | 2015-09-25 | 2015-12-23 | 陈伟 | Double-area interlayer box type water-cooling differential planetary gearbox |
| CN105240496A (en) * | 2015-09-25 | 2016-01-13 | 陈伟 | Double-area type interlayer box air-cooling differential planet reduction gearbox |
| CN105317942A (en) * | 2015-09-18 | 2016-02-10 | 陈伟 | Differential planetary reducer for digitally displaying oil temperature of disengagement area |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4872502A (en) * | 1987-09-25 | 1989-10-10 | The Falk Company | Air cooling of enclosed gear drives |
| CN201071904Y (en) * | 2007-08-20 | 2008-06-11 | 重庆齿轮箱有限责任公司 | Differential epicyclic gear box |
| CN101576065A (en) * | 2009-06-23 | 2009-11-11 | 吴声震 | Megawatt planet differential wind power speed increasing box |
| CN101581351A (en) * | 2009-06-23 | 2009-11-18 | 吴声震 | Novel planetary reduction gear |
| CN102996745A (en) * | 2012-10-09 | 2013-03-27 | 吴小杰 | Grease lubricated special low-speed planet speed reducer for roller table for bearing |
-
2015
- 2015-02-13 CN CN201510078933.7A patent/CN104728349A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4872502A (en) * | 1987-09-25 | 1989-10-10 | The Falk Company | Air cooling of enclosed gear drives |
| CN201071904Y (en) * | 2007-08-20 | 2008-06-11 | 重庆齿轮箱有限责任公司 | Differential epicyclic gear box |
| CN101576065A (en) * | 2009-06-23 | 2009-11-11 | 吴声震 | Megawatt planet differential wind power speed increasing box |
| CN101581351A (en) * | 2009-06-23 | 2009-11-18 | 吴声震 | Novel planetary reduction gear |
| CN102996745A (en) * | 2012-10-09 | 2013-03-27 | 吴小杰 | Grease lubricated special low-speed planet speed reducer for roller table for bearing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317942A (en) * | 2015-09-18 | 2016-02-10 | 陈伟 | Differential planetary reducer for digitally displaying oil temperature of disengagement area |
| CN105179606A (en) * | 2015-09-25 | 2015-12-23 | 陈伟 | Double-area interlayer box type water-cooling differential planetary gearbox |
| CN105240496A (en) * | 2015-09-25 | 2016-01-13 | 陈伟 | Double-area type interlayer box air-cooling differential planet reduction gearbox |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20150624 |
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