AU675726B2 - Motor-gearbox unit - Google Patents

Motor-gearbox unit Download PDF

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Publication number
AU675726B2
AU675726B2 AU71558/94A AU7155894A AU675726B2 AU 675726 B2 AU675726 B2 AU 675726B2 AU 71558/94 A AU71558/94 A AU 71558/94A AU 7155894 A AU7155894 A AU 7155894A AU 675726 B2 AU675726 B2 AU 675726B2
Authority
AU
Australia
Prior art keywords
motor
gearbox
flange
gear
drive
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.)
Ceased
Application number
AU71558/94A
Other versions
AU7155894A (en
Inventor
Jean-Daniel Nast
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transport SA
Original Assignee
GEC Alsthom Transport SA
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 GEC Alsthom Transport SA filed Critical GEC Alsthom Transport SA
Publication of AU7155894A publication Critical patent/AU7155894A/en
Application granted granted Critical
Publication of AU675726B2 publication Critical patent/AU675726B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
    • 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
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0493—Gearings with spur or bevel gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
    • 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
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • 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
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H57/022—Adjustment of gear shafts or bearings
    • F16H2057/0221—Axial adjustment

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • General Details Of Gearings (AREA)
  • Valve Device For Special Equipments (AREA)
  • Power Steering Mechanism (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Gear Transmission (AREA)
  • Lock And Its Accessories (AREA)
  • Control Of Electric Motors In General (AREA)
  • Motor Or Generator Frames (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Vending Machines For Individual Products (AREA)
  • Brushes (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

The present invention relates to a geared-down motor unit comprising: - a circular motor (1), the drive shaft (2) of which is coupled to a motor pinion (3) for the purpose of transmitting the rotational movement of the drive shaft to an output pinion via an intermediate wheel coupled to the said motor pinion and to the said output pinion, - a first (6) and a second (7) bearing block arranged on the drive shaft respectively on either side of the circular motor, - a flange of the motor (8), arranged around the said circular motor, holding the said first bearing block, and - a flange of the reducer gear (9) arranged around the said motor and output pinions and the said intermediate wheel, in which: - the said first and second bearing blocks are mounted, respectively, on either side of the circular motor and of the motor pinion, and - the said second drive block is held by the said flange of the reducing gear. <IMAGE>

Description

AUSTRALIA
Patents Act COMPLETE SPECIFICATION
(ORIGINAL)
Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: r Name of Applicant: GEC Alsthom Transport SA Actual Inventor(s): Jean-Daniel Nast Address for Service: PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA Invention Title: MOTOR-GEARBOX UNIT Our Ref 379382 POF Code: 1501/202864 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): -1-
I_
-1A- MOTOR-GEARBOX UNIT The present invention concerns rotating electrical machines in general and a motor-gearbox unit in particular.
It is important for the bearing assemblies of electric motors such as motorgearbox units to have maximum temperature resistance and enhanced lubricant performance if they are to rotate at very high speeds.
In prior art motor-gearbox units the maximum safe rotation speed is often limited by bearing assembly lubrication.
The bearing assemblies of prior art motor-gearbox units are lubricated with grease. The greases employed do not allow high rotation speeds of the motor.
This application proposes a motor-gearbox unit in which the construction and arrangement of the various components allow relatively high motor rotation speeds, that is speeds above 4000 rpm, without significant increase in the 4 **w ii: 15 temperature of the bearing assemblies.
:The motor-gearbox unit of the present invention may also provide improved ventilation of the bearing assembly.
According to the present invention there is provided a motor-gearbox unit including: ;i 20 a rotary motor whose drive shaft is coupled to a drive gear to transmit rotational movement of the drive shaft to an output gear through the intermediary of an intermediate gear coupled to said drive gear and to said output gear; first and second bearing assemblies disposed on the drive shaft on respective sius of the rotary motor and coupled drive gear; a motor flange disposed around said rotary motor and supporting said first bearing assembly; a gearbox flange disposed around said drive and output gears and said intermediate gear; -v F% MJP -2said second bearing assembly being supported by said gearbox flange; said second bearing assembly being immersed in a liquid lubricating said gearbox flange; and said motor flange and said gearbox flange each being cooled by forced ventilation, said forced ventilation of said gearbox flange being part of the forced ventilation of said motor flange.
a
S*
*50 o •*me *ooo* output gear-; first and second bearing assemblies-disposed-of the drive shaft on respective sides of the circ ar motor; a motor flange disposed around said/circular motor and supporting said first bearing assem y; and a gearbox flange disposed around/ aid drive and output gears and said intermediate gear wherein: said gearbox flange s cooled by forced ventilation.
In accordance with se ondary features of the motorgearbox unit, said gearbox flange is cooled by part of the forced ventilation f said motor flange; a venti tion cover is disposed on the upper part of said gear x flange; i lower part is cooled by natural ventilation; or cooling fins are disposed in the lower part of aid gearbox flangc.
In accordance with another secondary feature of the invention the motor-gearbox unit comprise a front seal held between the contacting surfaces of said motor flange oo* '25 and said gearbox flange.
An advantage of the motor-gearbox unit of the invention specific to the construction and arrangement of the various component parts of the assembly is the facility to lubricate the bearing assembly by means other than those employed in the prior art.
Another advantage of the motor-gearbox unit of the invention also specific to the construction and arrangement of the various component parts of the assembly is simple and efficient ventilation of the bearing assembly.
3a A preferred embodiment of the present invention will now be described with reference to the accompanying drawings wherein:- Figure 1 is a view in longitudinal cross-section of the motor-gearbox unit of the invention.
Figure 2 shows the side of the gearbox flange facing the motor.
e *i *e Se MJP A:\71558C.DOC her objocts, features and advantages fthU invention will emerge from a reading of the des ption of a preferred embodiment of the motor-gear unit given with reference to the accompanying drwngs.
BRIEF DESCRIPTION OF THE DRAWINC Figure 1 is a view longitudinal cross-section of the motor-gearbox uBic of the invention.
Figurei shows the side of the gearbox flange facingCe motor.
ETAL UEbCiTIN HE PREFERRED EMBODI.ENT The motor-gearbox unit shown in longitudinal crosssection in figure 1 comprises a circular motor 1 whose drive shaft 2 is coupled to a drive gear 3 to transmit the rotational movement of the drive shaft to an output gear 4 (figure 2) through the intermediary of an intermediate gear 5 (figure 2) coupled to the drive gear and to the output gear.
First and second bearing assemblies 6, 7 are disposed on the drive shaft on respective sides of the circular motor.
A first flange 8 is disposed around the circular motor. The motor flange supports the first bearing *assembly so that the longitudinal axis of symmetry of the bearing of the first bearing assembly is coincident with 25 the rotation axis of the motor.
A second flange 9 is disposed around the drive and output gears and said intermediate gear.
In accordance with an essential feature of the motor-gearbox unit of the invention, the first and second bearing assemblies are disposed on resnective sides of the circular motor and the drive gear.
To this end the second bearing assembly is supported by the gearbox flange so that the longitudinal axis of symmetry of the bearing of the second bearing assembly is coincident with the rotation axis of the motor.
The bearing of the first bearing assembly is lubricated with grease, for example.
The lubricant of the gearbox flange is preferably oil which is used to lubricate the second bearing assembly.
In accordance with another essential feature of the motor-gearbox unit of the invention the gearbox flange is cooled by forced ventilation.
The flange of the gearbox of the motor-gearbox unit can then be cooled by part of the forced ventilation of said motor flange.
To this end, the motor-gearbox unit comprises a first ventilation cover 10 on the upper part of the 15 gearbox flange and a second ventilation cover 11 on the upper part of the motor flange, for example.
A pulsed air feed 14 is disposed in the upper part of the ventilation ccvers, for example.
The upper part of the gearbox flange is then cooled 20 by forced ventilation while its lower part is cooled by natural ventilation, ~To increase the rate of thermal exchange in the lower part of the flange of the gearbox of the motorgearbox unit the lower wall of the gearbox flange eeo 25 comprises cooling fins 12.
S" The flowrate of the airfeed to the motor side is in the order of 1.25 m 3 /s and the air temperature is in the order of 40°C, for example.
The flowrate of the airfeed to the gearbox side is in the order of 0.5 m 3 for example. The air temperature is in the order of 40 0 C and its velocity is in the order of 10 m/s.
Finally, when the motor-gearbox unit of the invention is used on a high-speed train, the velocity of air in the lower area cooled by natural ventilation is
_C~II
dependent on the speed of the train, which is 350 kph, for example.
Figure 2 is a front view of the side of the gearbox flange facing the motor.
Figure 2 shows the output gear 4 and the intermediate gear A front seal 13 is held between the contacting surfaces of the motor and gearbox flanges, for example by means of a groove 15 on the side of the gearbox flange facing the motor. This seal is essential for isolating the space between the inside surfaces of the motor and gearbox flanges from the external environment.
The ventilation covers of the motor and the gearbox Iare preferably made from aluminum.
o*
S
S
S
5S 55
S

Claims (6)

1. A motor-gearbox unit including: a rotary motor whose drive shaft is coupled to a drive gear to transmit rotational movement of the drive shaft to an output gear through the intermediary of an intermediate gear coupled to said drive gear and to sid output gear; first and second bearing assemblies disposed on the drive shaft on respective sides of the rotary motor and coupled drive gear; a motor flange disposed around said rotary motor and supporting said first bearing assembly; a gearbox flange disposed around said drive and output gears and said intermediate gear; said second bearing assembly being supported by said gearbox flange; :said second bearing assembly being immersed in a liquid lubricating said gearbox flange; and said motor flange and said gearbox flange each being cooled by forced ventilation, said forced ventilation of said gearbox flange being part of the 20 forced ventilation of said motor flange. :o
2. Motor-gearbox unit according to claim 1 comprising a first ventilation cover on the upper part of said gearbox flange and a second ventilation cover on the upper part of said motor flange.
3. Motor-gearbox unit according to claim 1 wherein an upper part of said unit is cooled by forced ventilation and a lower part of said unit is cooled by natural ventilation.
4. Motor-gearbox unit according to claim 3 compr.sing cooling fins in the lower part of said gearbox flange. Motor-gearbox unit according to claim 1 comprising a front seal held between the contacting surfaces of said motor and gearbox flanges.
A MJP AA715SBC.DOC 0 O I -8-
6. A motor-gearbox unit substantially as herein described with reference to the accompanying drawings. DATED: 10 December, 1996 PHILLIPS ORMONDE FITZPATRICK Attorneys for: GEC ALSTHOM TRANSPORT SA 4 e* eas o* e o a* MJP A:\71558C.DOC LI~ 4 i 9 ABSTRACT OF THE DISCLOSURE A motor-gearbox unit comprises a circular motor whose drive shaft is coupled to a drive gear to transmit rotational movement of the drive shaft to an output gear through the intermediary of an intermediate gear coupled to the drive gear and to the output gear. First and second bearing assemblies are disposed on the drive shaft on respective sides of the circular motor. A motor flange is disposed around the circular motor and supports the first bearing assembly. A gearbox flange is disposed around the drive and output gears and the intermediate gear. The first and second bearing assemblies are 0s disposed on respective sides of the circular motor and i. the drive gear and the second bearing assembly is supported by the gearbox flange. *o *OCC C. a
AU71558/94A 1993-09-02 1994-08-30 Motor-gearbox unit Ceased AU675726B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310470 1993-09-02
FR9310470A FR2709617B1 (en) 1993-09-02 1993-09-02 Gear motor assembly.

Publications (2)

Publication Number Publication Date
AU7155894A AU7155894A (en) 1995-03-16
AU675726B2 true AU675726B2 (en) 1997-02-13

Family

ID=9450513

Family Applications (1)

Application Number Title Priority Date Filing Date
AU71558/94A Ceased AU675726B2 (en) 1993-09-02 1994-08-30 Motor-gearbox unit

Country Status (21)

Country Link
EP (1) EP0642207B1 (en)
JP (1) JPH07154944A (en)
KR (1) KR100321454B1 (en)
AT (1) ATE162015T1 (en)
AU (1) AU675726B2 (en)
BG (1) BG62307B1 (en)
BR (1) BR9403416A (en)
CA (1) CA2131341A1 (en)
CZ (1) CZ289138B6 (en)
DE (1) DE69407700T2 (en)
DK (1) DK0642207T3 (en)
ES (1) ES2110715T3 (en)
FI (1) FI109824B (en)
FR (1) FR2709617B1 (en)
GR (1) GR3026473T3 (en)
HU (1) HU215106B (en)
NO (1) NO305928B1 (en)
PL (1) PL175568B1 (en)
RO (1) RO115476B1 (en)
RU (1) RU2126582C1 (en)
SK (1) SK105194A3 (en)

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DE29513701U1 (en) * 1995-08-25 1996-09-19 Siemens AG, 80333 München Motor-gear drive unit, in particular motor vehicle window lifter drive or the like.
JP3234145B2 (en) * 1996-02-05 2001-12-04 本田技研工業株式会社 Power transmission device cooling structure
DE20304904U1 (en) * 2003-03-26 2004-02-26 Minebea Co., Ltd., Miyota Motor housing for an electric motor
DE102005030217A1 (en) * 2005-06-29 2007-01-04 Robert Bosch Gmbh Electric motor and gear drive unit for actuators in the motor vehicle
JP2009045968A (en) * 2007-08-14 2009-03-05 Nsk Ltd Electric power steering device
DE102014009317A1 (en) * 2014-06-27 2015-12-31 Sew-Eurodrive Gmbh & Co Kg drive
CN108054846B (en) * 2017-11-21 2024-07-05 常州理工科技股份有限公司 Motor end cover structure for high-speed motor car
CN107747624A (en) * 2017-11-28 2018-03-02 哈尔滨理工大学 A kind of high-accuracy no backlash decelerator based on permagnetic synchronous motor driving
CN109236953A (en) * 2018-11-01 2019-01-18 上海理工大学 The high durable lightweight hub reduction gear of distributed-driving electric automobile
DE102021003132A1 (en) 2020-07-21 2022-01-27 Sew-Eurodrive Gmbh & Co Kg Geared motor, having a gear, an electric motor and an adapter flange
CN111927943A (en) * 2020-08-17 2020-11-13 淮南万泰电子股份有限公司 Two-in-one equipment of motor speed reducer
CN112220575B (en) * 2020-11-11 2022-03-18 慈溪赛嘉电子有限公司 Electric toothbrush and driving mechanism thereof
DE102022001411B4 (en) 2022-04-25 2024-06-06 Mercedes-Benz Group AG Electric drive device for a motor vehicle, in particular for a motor vehicle
FR3139420B1 (en) * 2022-09-02 2024-08-23 Valeo Systemes De Controle Moteur Actuator, in particular of the electromechanical type
WO2024201582A1 (en) * 2023-03-24 2024-10-03 本田技研工業株式会社 Ridden vehicle
CN117072663B (en) * 2023-10-18 2023-12-19 江苏中工高端装备研究院有限公司 Efficient heat dissipation gear transmission case for fan

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Publication number Priority date Publication date Assignee Title
EP0084184A1 (en) * 1982-01-14 1983-07-27 ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC) Société Anonyme Asynchronous traction motor
GB2171853A (en) * 1985-02-19 1986-09-03 Dobson Park Ind Electric motors and power tools
EP0601433A1 (en) * 1992-12-10 1994-06-15 Siemens Aktiengesellschaft Drive unit

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EP0084184A1 (en) * 1982-01-14 1983-07-27 ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC) Société Anonyme Asynchronous traction motor
GB2171853A (en) * 1985-02-19 1986-09-03 Dobson Park Ind Electric motors and power tools
EP0601433A1 (en) * 1992-12-10 1994-06-15 Siemens Aktiengesellschaft Drive unit

Also Published As

Publication number Publication date
JPH07154944A (en) 1995-06-16
KR100321454B1 (en) 2002-05-13
ATE162015T1 (en) 1998-01-15
HUT71075A (en) 1995-11-28
GR3026473T3 (en) 1998-06-30
BG62307B1 (en) 1999-07-30
RU2126582C1 (en) 1999-02-20
ES2110715T3 (en) 1998-02-16
FI943994A (en) 1995-03-03
RU94031784A (en) 1996-10-20
DE69407700D1 (en) 1998-02-12
NO943219D0 (en) 1994-08-31
PL175568B1 (en) 1999-01-29
NO305928B1 (en) 1999-08-16
EP0642207A1 (en) 1995-03-08
FI109824B (en) 2002-10-15
SK105194A3 (en) 1995-03-08
NO943219L (en) 1995-03-03
CZ289138B6 (en) 2001-11-14
HU215106B (en) 1998-09-28
PL304864A1 (en) 1995-03-06
AU7155894A (en) 1995-03-16
HU9402339D0 (en) 1994-10-28
BR9403416A (en) 1995-05-09
CZ211294A3 (en) 1995-04-12
DE69407700T2 (en) 1998-04-16
DK0642207T3 (en) 1998-02-09
RO115476B1 (en) 2000-02-28
EP0642207B1 (en) 1998-01-07
FR2709617B1 (en) 1995-09-29
CA2131341A1 (en) 1995-03-03
BG99013A (en) 1995-10-31
KR950010288A (en) 1995-04-26
FI943994A0 (en) 1994-08-31
FR2709617A1 (en) 1995-03-10

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