WO2010024731A1 - Engaging ring for engagement of a gear ratio in a planetary gear set - Google Patents
Engaging ring for engagement of a gear ratio in a planetary gear set Download PDFInfo
- Publication number
- WO2010024731A1 WO2010024731A1 PCT/SE2008/000478 SE2008000478W WO2010024731A1 WO 2010024731 A1 WO2010024731 A1 WO 2010024731A1 SE 2008000478 W SE2008000478 W SE 2008000478W WO 2010024731 A1 WO2010024731 A1 WO 2010024731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ring
- engaging
- engaging ring
- gear
- connection device
- Prior art date
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
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
- F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
-
- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/78—Special adaptation of synchronisation mechanisms to these gearings
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
- F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
- F16D2023/0625—Details of members being coupled, e.g. gears
Definitions
- Engaging ring for engagement of a gear ratio in a planetary gear set
- the present invention relates to an engaging ring for engagement of a gear in a planetary gear set via an engaging sleeve, in accordance with the preamble of the accompanying claim 1.
- the invention will find its application in connection with automotive vehicles, and is intended to be a device for reducing noise originating especially from the planetary gear set .
- a gear box in a vehicle transmission usually has an input rotating shaft and an output rotating shaft.
- the principal object is to transmit rotation with the possibility of selecting between various rotational gear ratios between input and output shaft.
- the document US 4667538 discloses an example of a two- geared synchronized gear arrangement in a range gear box of the planetary gearing type, where the synchronization for each gear is constituted by an engaging ring, a synchronizing ring which co-operates with the engaging ring by means of friction surfaces and is axially displaceable, which synchronizing ring is arranged to rotate with an axially displaceable engaging sleeve, and a spring suspension element in the form of a garter spring.
- a first engaging ring is fixedly connected with a range gear housing and a second engaging ring is fixedly connected with an output shaft of the range gear box.
- the second engaging ring can be arranged to connect the engaging sleeve to the input shaft of the range gear instead.
- the synchronization device can be divided and arranged on each side of the ring gear of the planetary gearing.
- the entire synchronization device is provided on one side of the ring gear of the planetary gearing, which ring gear is fixed to the engaging sleeve.
- the purpose of said garter spring is to transmit bearing force from the ring gear to one of the synchronizing rings during synchronization and gear changing by means of co-operation with recesses in the engaging sleeve.
- the rate of rotation of the ring gear shall be adjusted to the rate of rotation of the output shaft before it can be locked to or be engaged to the output shaft. This is achieved by means of the fact that a bearing force is applied to the engaging sleeve in an axial direction towards the synchronizing ring for high-range, that is, the synchronizing ring which shall adjust the rotation of the ring gear to the rate of rotation of the output shaft.
- the ring gear/engaging sleeve is locked to the output shaft by means of the fact that the engaging sleeve now can be axially displaced and engage with the engaging ring for high-range, which engaging ring is rotationally connected with the output shaft.
- the respective garter spring transmits bearing force from the ring gear to the respective synchronizing ring by means of co-operation with recesses in the ring gear.
- said engaging sleeve When low range is engaged said engaging sleeve is connected to the range gear housing via said first engaging ring.
- the planetary gear set When the planetary gear set is rotating the meshing of teeth of the gear wheels in the range gear can give rise to vibrations. These vibrations are transmitted to the range gear housing, when the low range gear is engaged.
- the whole range gear box can act as a resonance box, thus, amplifying the vibrations and transmitting them to the ambient air and creating noise to the environment.
- the connection between the engaging sleeve and the housing via said engaging ring is in the in US 4667538 disclosed example more or less 100% stiff since the engaging ring is designed with engaging ring teeth, which connect towards the housing and towards the engaging sleeve simultaneously.
- a known solution to dampen the noise is to encapsulate the range gear box and/or arrange sound shields on the outside of the range gear box in order to dampen the noise.
- the aim of the present invention is to decrease the noise in an alternative way.
- the primary object of the present invention is to solve the above problem and to provide an improved device for noise reduction. This is achieved by a device as discussed in the introduction, the characteristics of which are defined by claim 1. Claims 2 to 8 describe different embodiments and developments of the device according to the invention.
- the device according to the invention is based on an engaging ring for engagement of a gear in a planetary gear set via an engaging sleeve. Said engaging ring when said gear is engaged is arranged to connect the engaging sleeve to a housing.
- the invention is characterized in that a torsional damper is integrated in said engaging ring in order to dampen transmission of vibrations to the housing from the planetary gear set, when said gear is engaged.
- said engaging ring comprises a first connection device arranged to connect the engaging ring to the housing and a second connecting device arranged to connect said engaging sleeve to the engaging ring. Said first and second connection devices are separated from each other.
- a distance of said engaging ring between said first and said second connection devices and in a radial and/or an axial direction, in relation to a geometrical centre axis of said engaging ring is such that as to allow a predetermined twisting of said engaging ring between said first and said second connection device in order to dampen said vibrations.
- Figures 1 to 6 disclose a section through a central geometrical axis of six different embodiments of an engaging ring according to the invention. Only the upper part of such an engaging ring section is disclosed for each embodiment.
- Figure 1 discloses an engaging ring 1 with a first connection device 2 arranged to connect the engaging ring to a housing (not disclosed) .
- the housing can for example be a transmission housing of a planetary gear set such as a range gearbox housing, as disclosed in mentioned US 4667538.
- a cone shaped friction surface 4 is arranged to interact with a corresponding surface on a not disclosed synchronizing ring.
- a second connecting device 3 is arranged to connect an engaging sleeve (not disclosed) to the engaging ring 1 in a known way (see for example US 4667538) .
- said first and second connection devices are separated from each other in order to allow a relative movement in a circumferential direction.
- a vibration originating in the planetary gear set and transmitted to the second connection device via the engaging sleeve will be damped on its way to the first connection device and the transmission housing by a torsional damper 5 integrated in the engaging ring 1.
- the part 5 of the engaging ring that acts as a torsional damper can be extended from the first connection device 2 all the way to the second connection device 3.
- a distance of said torsional damper part 5 between said first and said second connection devices and extending in a radial and an axial direction, in relation to the geometrical centre axis of said engaging ring is such that as to allow a certain predetermined twisting of said engaging ring between said first and said second connection device in order to dampen said vibrations.
- the torsional damper part 5 of the engaging ring is formed so that a section of the torsional damper basically has the shape of a relatively wide U.
- Figure 2 gives another example of the shape of an engaging ring 21 according to the invention.
- a cone shaped friction surface 4, a first 2 and a second 3 connection device in the embodiment of figure 2 can be identical as in the embodiment of figure 1.
- a torsional damper part 25 of the engaging ring has a minimal extension in an axial direction.
- the torsional damper part 25 basically has the shape of a narrow U.
- the embodiments according to the invention in figures 4, 5 and 6 all disclose different variants of an engaging ring 41, 51 and 61 respectively of the engaging ring disclosed in figure 1.
- a cone shaped friction surface, a first and a second connection device in the embodiments of figures 4, 5 and 6 can be identical as in the embodiment of figure 1.
- the engaging rings 41, 51 and 61 each comprise of two rings, a first ring comprising the first connection device 2 and a second ring comprising a second connection device 3.
- FIG. 4 an embodiment of an engaging ring 41 according to the invention is shown where a first ring 42 comprises the first connection device 2 and most of the torsional damper part 45.
- a second ring 43 comprises the second connection device 3 and the cone shaped friction surface 4.
- the first and second ring are fixed to each other by a third connection device 46 arranged on said first ring and a fourth connection device 47 arranged on said second ring.
- a corresponding first ring 52 comprises basically only the first connection device 2.
- a corresponding second ring 53 here comprises the second connection device 3, the cone shaped friction surface 4 and most of a torsional damper part 55.
- the first and second ring are also here fixed to each other by a corresponding third connection device 56 arranged on said first ring and a corresponding fourth connection device 57 arranged on said second ring.
- said third and fourth connection devices are disclosed as meshing teeth (or splines) .
- these teeth extend mostly in an axial direction in relation to a geometrical central axis of the shown engaging rings.
- a corresponding first ring 62 comprises basically only the first connection device 2.
- a corresponding second ring 63 here also comprises the second connection device 3, the cone shaped friction surface 4 and most of the torsional damper part 65.
- the first and second ring are also here fixed to each other by a corresponding third connection device 66 arranged on said first ring ' and a corresponding fourth connection device 67 arranged on said second ring.
- said third and fourth connection devices are also disclosed as meshing teeth (or splines) . In this example these teeth extend mostly in a radial direction in relation to a geometrical central axis of the shown engaging ring.
- FIG. 3 shows an engaging ring 31 according to the invention that has some similarities with the divided engaging ring embodiments described through figures 4 to 6.
- a cone shaped friction surface 4, a first 2 and a second 3 connection device in the embodiment of figure 3 can be identical as in the embodiments of the other figures.
- a corresponding first ring 32 comprises basically only the first connection device 2.
- a corresponding second ring 33 here also comprises the second connection device 3, the cone shaped friction surface 4 and most of a torsional damper part 35.
- the first and second ring are also here fixed to each other by a corresponding third connection device 36 arranged on said first ring and a corresponding fourth connection device 37 arranged on said second ring.
- said third and fourth connection devices are also disclosed as meshing teeth.
- the teeth of the third connection device 36 extend mostly in an axial direction and the teeth of the fourth connection device 37 extend mostly in a radial direction.
- the torsional damper part 35 basically has the shape of a mirror-inverted wide and some what squashed S.
- the torsional damper part 35 can be mirror- inverted and forming a part of the first ring 32.
- said second ring will in this embodiment basically only comprise of the second connection device, the cone shaped friction surface and the fourth connection device.
- the design, dimensions and material especially of the torsional damper parts 5, 25, 35, 45, 55 and 65 are chosen so as to allow a predetermined twisting of said engaging ring between said first and said second connection device in order to dampen said vibrations.
- Practical experiments has shown that a stiffness in said torsional damper part allowing a twisting of around 0,00018 radians/kNm gives an adequate vibration damping result.
- Said torsional damper parts according to the invention can be designed so that a twisting is allowed within the range of 0,00015 radians/kNm to 0,00025 radians/kNm, which results in an adequate vibration damping.
- the embodiments in figures 3 to 6 contribute to a simpler manufacturing of the engaging ring by the engaging ring being divided in a first and a second ring that are fixed to each other.
- said first and second connection devices can for example be engaging teeth according to prior art.
- the third and fourth connection devices can be teeth meshing with each other or a splined coupling.
- damper part or parts can be carburizing steel.
- Other steels such as quenched and tempered steel can be used as well. Different composites are also possible.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Structure Of Transmissions (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011524930A JP5346083B2 (en) | 2008-08-26 | 2008-08-26 | Engagement ring for gear ratio engagement in planetary gear sets |
PCT/SE2008/000478 WO2010024731A1 (en) | 2008-08-26 | 2008-08-26 | Engaging ring for engagement of a gear ratio in a planetary gear set |
BRPI0823041-2 BRPI0823041B1 (en) | 2008-08-26 | 2008-08-26 | hitch ring and stepped gear |
CN200880130874.1A CN102132065B (en) | 2008-08-26 | 2008-08-26 | Engaging ring for engagement of gear ratio in planetary gear set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE2008/000478 WO2010024731A1 (en) | 2008-08-26 | 2008-08-26 | Engaging ring for engagement of a gear ratio in a planetary gear set |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010024731A1 true WO2010024731A1 (en) | 2010-03-04 |
Family
ID=41721701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2008/000478 WO2010024731A1 (en) | 2008-08-26 | 2008-08-26 | Engaging ring for engagement of a gear ratio in a planetary gear set |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP5346083B2 (en) |
CN (1) | CN102132065B (en) |
BR (1) | BRPI0823041B1 (en) |
WO (1) | WO2010024731A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016108824A1 (en) * | 2014-12-29 | 2016-07-07 | Halliburton Energy Services, Inc. | Mitigating stick-slip effects in rotary steerable tools |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60132166A (en) * | 1983-12-20 | 1985-07-15 | Kawasaki Heavy Ind Ltd | Planetary gear |
US5593360A (en) * | 1994-09-08 | 1997-01-14 | Tsubakimoto Chain Co. | Planetary gear system |
US5797185A (en) * | 1996-05-01 | 1998-08-25 | Sikorsky Aircraft Corporation | Method of making an isolated ring gear for planetary gear drive systems |
US20080184845A1 (en) * | 2007-02-01 | 2008-08-07 | Farrar Peter K | Planetary starter apparatus and assembly method thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54103943A (en) * | 1978-01-31 | 1979-08-15 | Kanji Imazaike | Gear |
SE450944B (en) * | 1983-12-06 | 1987-08-17 | Volvo Ab | RANGEVEXELLADA FOR MOTOR VEHICLES |
JPH0317083Y2 (en) * | 1985-05-10 | 1991-04-11 | ||
IT1198111B (en) * | 1986-11-18 | 1988-12-21 | Gian Piero Barozzi | GAME-FREE COMPACT REDUCER WITH STRONG REDUCTION RATIO, ESPECIALLY FOR AUTOMATIC AND SIMILAR MANIPULATORS |
US5472386A (en) * | 1994-05-26 | 1995-12-05 | United Technologies Corporation | Stacked compound planetary gear train for an upgraded powertrain system for a helicopter |
JPH084783A (en) * | 1994-06-23 | 1996-01-09 | Aisin Ee I Kk | Meshing device for manual transmission |
-
2008
- 2008-08-26 WO PCT/SE2008/000478 patent/WO2010024731A1/en active Application Filing
- 2008-08-26 CN CN200880130874.1A patent/CN102132065B/en active Active
- 2008-08-26 JP JP2011524930A patent/JP5346083B2/en not_active Expired - Fee Related
- 2008-08-26 BR BRPI0823041-2 patent/BRPI0823041B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60132166A (en) * | 1983-12-20 | 1985-07-15 | Kawasaki Heavy Ind Ltd | Planetary gear |
US5593360A (en) * | 1994-09-08 | 1997-01-14 | Tsubakimoto Chain Co. | Planetary gear system |
US5797185A (en) * | 1996-05-01 | 1998-08-25 | Sikorsky Aircraft Corporation | Method of making an isolated ring gear for planetary gear drive systems |
US20080184845A1 (en) * | 2007-02-01 | 2008-08-07 | Farrar Peter K | Planetary starter apparatus and assembly method thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016108824A1 (en) * | 2014-12-29 | 2016-07-07 | Halliburton Energy Services, Inc. | Mitigating stick-slip effects in rotary steerable tools |
US9970236B2 (en) | 2014-12-29 | 2018-05-15 | Halliburton Energy Services, Inc. | Mitigating stick-slip effects in rotary steerable tools |
Also Published As
Publication number | Publication date |
---|---|
BRPI0823041B1 (en) | 2019-12-10 |
BRPI0823041A2 (en) | 2015-07-28 |
CN102132065A (en) | 2011-07-20 |
JP2012501416A (en) | 2012-01-19 |
CN102132065B (en) | 2014-03-12 |
JP5346083B2 (en) | 2013-11-20 |
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