WO2013062494A1 - Système de commande du sens d'un mouvement de rotation - Google Patents

Système de commande du sens d'un mouvement de rotation Download PDF

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Publication number
WO2013062494A1
WO2013062494A1 PCT/TR2012/000139 TR2012000139W WO2013062494A1 WO 2013062494 A1 WO2013062494 A1 WO 2013062494A1 TR 2012000139 W TR2012000139 W TR 2012000139W WO 2013062494 A1 WO2013062494 A1 WO 2013062494A1
Authority
WO
WIPO (PCT)
Prior art keywords
clutch
motion
control system
direction control
output element
Prior art date
Application number
PCT/TR2012/000139
Other languages
English (en)
Inventor
Selahattin SARI
Original Assignee
Turk Traktor Ve Ziraat Makineleri Anonim Sirketi
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 Turk Traktor Ve Ziraat Makineleri Anonim Sirketi filed Critical Turk Traktor Ve Ziraat Makineleri Anonim Sirketi
Publication of WO2013062494A1 publication Critical patent/WO2013062494A1/fr

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
    • 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
    • F16H37/043—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion
    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • F16D2021/0661—Hydraulically actuated multiple lamellae clutches
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • F16D2021/0692—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric with two clutches arranged axially without radial overlap
    • 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
    • F16H37/043—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion
    • F16H2037/044—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion comprising a separate gearing unit for shifting between forward or reverse
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
    • F16H63/3026—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure comprising friction clutches or brakes

Definitions

  • the present invention relates to a direction control system that allows selection between forward and backward motion in gearboxes especially used in tractors and heavy duty vehicles.
  • the motion direction of a power transmission system such as a gearbox may be changed without severing its connection to the source of motion such as a vehicle engine.
  • US5662198A describes a two-way hydraulic clutch system.
  • This system aims at providing proper motion transmission by preventing two sequential double clutches from overlapping.
  • the system is formed by sequentially arranging 2 clutch systems in opposite directions so as to operate independently from each other with a stationary hub.
  • the system works by transmitting liquid from an oil circuit to a piston under a pressure that squeezes friction elements and, for motion in the opposite direction, squeezing secondary friction elements as a result of pressure applied on another piston with another oil circuit in order to increase torque.
  • Pistons squeezing the friction elements move independently from each other and provide transmission with ease by joining the clutches located on both ends.
  • the second clutch and second friction element also tend to drag axially. This leads to an increase in friction and an unbalanced motion within the gearbox.
  • a power transmission system is disclosed.
  • interlocking and separation between the central shaft and the peripheral shaft located around this central shaft is realised as the teeth outside the central shaft and the teeth in the tube located within the clutch start moving.
  • the clutch cylinder comprises a piston actuated by fluid pressure and a clutch plate consisting of multiple disks.
  • the central shaft provides forward motion of the system while the peripheral shaft provides motion in the opposite direction.
  • This system was designed for four wheel drive vehicles. > Moreover, transmission's size on the horizontal axis and the oiling system are scaled down with this system to obtain a compact design.
  • non-coaxial clutch mechanisms are mentioned wherein disks and linings included in these are located so as to facilitate stopping and reversing the motion.
  • the aim of the present invention is to develop a direction control system that transmits the rotational motion generated by a motion source to the same or opposite direction.
  • the aim is to develop a direction control system in a vehicle, especially such as a tractor or a heavy duty vehicle, which transmits motion provided by an engine in such a manner that the vehicle moves in the backward or forward direction.
  • a further aim of the invention is to develop a direction control system that is activated by fluid pressure and may utilise existing systems such as a hydraulic power steering system in order to accomplish this.
  • the input for the direction control system developed with this invention is provided by an input shaft that extends through an axis and rotated by a motion source.
  • a clutch input element is provided whose centre is the said axis and which is attached to the said shaft and co-rotates with this input shaft.
  • motion is transmitted to a first clutch output element that rotates by receiving motion from and is coaxial with the clutch input element through a first lining set squeezed by a first piston or to a second clutch output element that rotates by receiving motion from and is coaxial with the clutch input element through a second lining set squeezed by a second piston.
  • an output shaft is included that extends along the said axis and to which the first clutch output element is attached directly and the second clutch output element is attached via an idle gear set in order to reverse rotational direction.
  • the output shaft is turned by the first clutch output element in the same direction as the input shaft when the first piston is activated, while it is turned by the second clutch output element in the opposite direction of the input shaft when the second piston is activated.
  • the direction control system is controlled by pressure of a fluid such as oil.
  • a fluid circuit used for this end is activated by a lever, a double switch or a similar equipment accessible by a user in line with his/her choice of direction, to provide motion in the first or second direction.
  • the activated fluid circuit provides motion transmission in the corresponding direction by activating the first piston when the first direction is selected and the second piston when the second direction is selected.
  • the activated piston When the selected direction is changed, the activated piston is turned back to its inactive position with a spring set.
  • the need for pressurised fluid is reduced by utilising a spring set to bring pistons to their inactive position. This, therefore, allowed supplying pressurised fluid from an existing system, for instance a power steering fluid in a vehicle.
  • Figure-1 A schematic view of the direction control system in a tractor.
  • Figure-2 A cross-sectional perspective view of the direction control system in a tractor gearbox.
  • Figure-3 A cross-sectional view of the shaft, clutch input element and first clutch output element.
  • Figure-4 A cross-sectional view of the second clutch output element. Description of Features/Sections/Parts Constituting the Invention
  • the direction control system (A) that transmits rotational motion generated by a motion source in the same or opposite direction basically comprises
  • the clutch input element (2) and the second clutch output element (8) are shaped like dishes facing each other. Said dish shape creates a space between the clutch input element (2) and the second clutch output element (8). In this space, an intermediate element (13) is provided, which is an extension of the first clutch output element (5) and the clutch input element (2) respectively, in a direction parallel to the rotational axis from the clutch input element (2) towards the second clutch output element (8) and radially inwards.
  • Co-rotation of the first clutch output element (5) with the clutch input element (2) is ensured as the teeth located on the outer surface of the first lining set (4) that is squeezed with the activation of the first piston (3) interact with the teeth located on the inner surface of the clutch input element (2) and the teeth located on the inner surface of the first lining set (4) interact with the teeth located on the outer surface of the first clutch output element (2).
  • the output shaft (10) rotates in the same direction as the input shaft (1).
  • Co-rotation of the second clutch output element (8) with the clutch input element (2) is ensured as the teeth located on the inner surface of the second lining set (7) that is squeezed with the activation of the second piston (6) interact with the teeth located on the outer surface of the intermediate element (13) and the teeth located on the outer surface of the second lining set (7) interact with the teeth located on the outer surface of the second clutch output element (8).
  • the output shaft (10) rotates in the opposite direction of the input shaft (1).
  • each of the said springs (12) consist of at least two washers whose centre is the said axis, wherein one plain washer and one conical washer are located consecutively and adjacently. Need for pressurised fluid is reduced by using, instead of fluid pressure, springs with conical washers (12) working against fluid pressure while bringing the pistons (3, 6) to their inactive positions. This, therefore, allowed supplying pressurised fluid from an existing system.
  • the direction control system (A) is used preferably in a vehicle gearbox in order to make a selection between said vehicle's forward or backward motion.
  • rotational motion received from the vehicle engine (B) through a main clutch (C) is transmitted firstly to the speed change gears (D) and then to the wheels (F) via differentials (F) by the direction control system (A) in a direction corresponding to forward and backward motion of the vehicle.
  • first piston is activated the vehicle moves forward
  • the second piston is activated the vehicle moves backwards.
  • the pressurised fluid system for activating the pistons is preferably a hydraulic power steering system.
  • power steering hydraulic oil is also used for oiling the direction control system (A).
  • oiling channels (14) are provided on the direction control system (A) conveying hydraulic oil to suitable spaces located within the direction control system (A) and between the direction control system (A) and the gearbox body.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Structure Of Transmissions (AREA)

Abstract

La présente invention porte sur un système de commande du sens (A) qui permet de choisir entre un mouvement en marche avant et un mouvement en marche arrière dans des boîtes de vitesses spécialement utilisées dans des tracteurs et véhicules poids lourds. Grâce à la présente invention, le sens du mouvement d'un système de transmission d'énergie, tel qu'une boîte de vitesses (D), peut être changé sans interruption de la liaison avec la source de mouvement, telle qu'un moteur de véhicule (B).
PCT/TR2012/000139 2011-09-06 2012-09-06 Système de commande du sens d'un mouvement de rotation WO2013062494A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201108744 2011-09-06
TR2011/08744 2011-09-06

Publications (1)

Publication Number Publication Date
WO2013062494A1 true WO2013062494A1 (fr) 2013-05-02

Family

ID=47604029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2012/000139 WO2013062494A1 (fr) 2011-09-06 2012-09-06 Système de commande du sens d'un mouvement de rotation

Country Status (1)

Country Link
WO (1) WO2013062494A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103420095A (zh) * 2013-07-12 2013-12-04 河南理工大学 一种变速装置驱动带式输送机多机功率平衡系统及方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750495A (en) * 1970-08-06 1973-08-07 Toyota Kk Control system for automatic transmission
JPS4953424U (fr) * 1972-08-19 1974-05-11
US4736653A (en) 1984-08-02 1988-04-12 Aisin-Warner Limited Power transmission
JPS63159133A (ja) * 1986-12-23 1988-07-02 Kubota Ltd 前後進切換装置の取付構造
GB2274493A (en) 1993-01-20 1994-07-27 Kubota Kk Transmission has clutch connecting input and output for quicker synchronisation
EP0696695A2 (fr) * 1994-08-09 1996-02-14 NEW HOLLAND ITALIA S.p.A. Transmission de véhicule, en particulier pour tracteurs agricoles
US5662198A (en) 1994-08-19 1997-09-02 Honda Giken Kogyo Kabushiki Kaisha Tandem type hydraulic clutch system
EP2075487A2 (fr) 2007-12-28 2009-07-01 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission à embrayage double
CN101576145A (zh) 2009-06-15 2009-11-11 上海汽车集团股份有限公司 双离合器变速器
JP2010096215A (ja) 2008-10-14 2010-04-30 Mitsubishi Agricult Mach Co Ltd 作業車両の走行変速装置
US20110030493A1 (en) 2008-04-18 2011-02-10 Melissa Koenig Dual clutch transmission having simplified controls

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750495A (en) * 1970-08-06 1973-08-07 Toyota Kk Control system for automatic transmission
JPS4953424U (fr) * 1972-08-19 1974-05-11
US4736653A (en) 1984-08-02 1988-04-12 Aisin-Warner Limited Power transmission
JPS63159133A (ja) * 1986-12-23 1988-07-02 Kubota Ltd 前後進切換装置の取付構造
GB2274493A (en) 1993-01-20 1994-07-27 Kubota Kk Transmission has clutch connecting input and output for quicker synchronisation
EP0696695A2 (fr) * 1994-08-09 1996-02-14 NEW HOLLAND ITALIA S.p.A. Transmission de véhicule, en particulier pour tracteurs agricoles
US5662198A (en) 1994-08-19 1997-09-02 Honda Giken Kogyo Kabushiki Kaisha Tandem type hydraulic clutch system
EP2075487A2 (fr) 2007-12-28 2009-07-01 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission à embrayage double
US20110030493A1 (en) 2008-04-18 2011-02-10 Melissa Koenig Dual clutch transmission having simplified controls
JP2010096215A (ja) 2008-10-14 2010-04-30 Mitsubishi Agricult Mach Co Ltd 作業車両の走行変速装置
CN101576145A (zh) 2009-06-15 2009-11-11 上海汽车集团股份有限公司 双离合器变速器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103420095A (zh) * 2013-07-12 2013-12-04 河南理工大学 一种变速装置驱动带式输送机多机功率平衡系统及方法

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