GB1497622A - Variable speed planetary transmission - Google Patents

Variable speed planetary transmission

Info

Publication number
GB1497622A
GB1497622A GB29553/76A GB2955376A GB1497622A GB 1497622 A GB1497622 A GB 1497622A GB 29553/76 A GB29553/76 A GB 29553/76A GB 2955376 A GB2955376 A GB 2955376A GB 1497622 A GB1497622 A GB 1497622A
Authority
GB
United Kingdom
Prior art keywords
brake
clutch
trains
train
planetary
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.)
Expired
Application number
GB29553/76A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB1497622A publication Critical patent/GB1497622A/en
Expired 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
    • 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
    • F16H3/62—Gearings having three or more central gears
    • F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
    • F16H3/666—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another with compound planetary gear units, e.g. two intermeshing orbital 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0056—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising seven forward speeds
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2015—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with five sets of orbital gears

Abstract

1497622 Change-speed gear CATERPILLAR TRACTOR CO 15 July 1976 [10 Dec 1975] 29553/76 Heading F2D A planetary transmission comprises first and second trains 16, 18 with a ring gear 16R driven from an input shaft 64 through gearing 58, 70 and a torque converter 60 with lock-up clutch 65, suns 16S, 18S constrained to rotate together and controlled by a brake 24, a planet carrier 20 common to both trains and connected to a driven shaft 32, a clutch 28 between the carrier and ring gear 16R, and a ring gear 18R controlled by a brake 26. The. train 16 has single planets 16P between its sum and ring gear and the train 18 has intermediate planets 18X, 18P, the arrangement providing a low ratio with split torque between the two trains when the brake 26 is applied, a higher ratio through the train 16 when the brake 24 is applied, and direct drive on engagement of the clutch 28. The figure shows the transmission combined with a further three-range planetary unit 30 and a planetary reversing unit 50, the final output shaft 48 being connected to a carrier 46 of the unit 30 and to the carrier 56 of the reversing unit. Application of a brake 44 establishes low range through a train 36, application of a brake 38 establishes a middle range through trains 34, 36, and engagement of a lock-up clutch 40 gives direct drive. The Specification describes a sequence of operation of the brakes 24, 26, 38, 44 and clutches 28, 40 to provide seven forward ratios, and indicates that appropriate proportioning of the elements of the planetary trains 16, 18, 34, 36 enables a substantially uniform step ratio between adjacent forward ratios to be obtained. Reverse is established by engagement of the clutch 28 and a brake 54. A constructional form of the transmission is described.
GB29553/76A 1975-12-10 1976-07-15 Variable speed planetary transmission Expired GB1497622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63934075A 1975-12-10 1975-12-10

Publications (1)

Publication Number Publication Date
GB1497622A true GB1497622A (en) 1978-01-12

Family

ID=24563711

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29553/76A Expired GB1497622A (en) 1975-12-10 1976-07-15 Variable speed planetary transmission

Country Status (3)

Country Link
BR (1) BR7607851A (en)
CA (1) CA1053931A (en)
GB (1) GB1497622A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7048669B2 (en) * 2001-10-18 2006-05-23 Toyota Jidosha Kabushiki Kaisha Automatic transmission
CN115217919A (en) * 2022-06-20 2022-10-21 陕西法士特齿轮有限责任公司 Ten-gear transmission and vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102359921B1 (en) * 2017-05-10 2022-02-07 현대자동차 주식회사 Planetary gear train of automatic transmission for vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7048669B2 (en) * 2001-10-18 2006-05-23 Toyota Jidosha Kabushiki Kaisha Automatic transmission
CN115217919A (en) * 2022-06-20 2022-10-21 陕西法士特齿轮有限责任公司 Ten-gear transmission and vehicle
CN115217919B (en) * 2022-06-20 2024-04-09 陕西法士特齿轮有限责任公司 Ten-gear transmission and vehicle

Also Published As

Publication number Publication date
CA1053931A (en) 1979-05-08
BR7607851A (en) 1977-10-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940715