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WO2007129977A1 - Boîte de vitesses avec axe de prise de force - Google Patents

Boîte de vitesses avec axe de prise de force Download PDF

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Publication number
WO2007129977A1
WO2007129977A1 PCT/SE2007/050297 SE2007050297W WO2007129977A1 WO 2007129977 A1 WO2007129977 A1 WO 2007129977A1 SE 2007050297 W SE2007050297 W SE 2007050297W WO 2007129977 A1 WO2007129977 A1 WO 2007129977A1
Authority
WO
WIPO (PCT)
Prior art keywords
pto
wheel
motor vehicle
countershaft
shaft
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
PCT/SE2007/050297
Other languages
English (en)
Inventor
Erik GÖRAS
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.)
Scania CV AB
Original Assignee
Scania CV AB
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 Scania CV AB filed Critical Scania CV AB
Priority to EP07748458A priority Critical patent/EP2015953A4/fr
Publication of WO2007129977A1 publication Critical patent/WO2007129977A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B60K25/06—Auxiliary drives from the transmission power take-off

Definitions

  • the present invention relates to a transmission device for a motor vehicle, which transmission device comprises a power takeoff arranged on a power takeoff shaft.
  • the present invention also relates to a motor vehicle equipped with such a transmission device.
  • Motor vehicles have an engine connected to a transmission device for propelling them.
  • Some motor vehicles are provided with a power takeoff (pto) connected to the engine.
  • the pto may be intended for driving some external machine such as a winch, a generator, a sweeping machine or some agricultural equipment.
  • the pto may alternatively be intended for internal use in the vehicle, e.g. for operating a crane, a tilt device or a cooling unit. In some cases it is desired to be able to connect the external machine while the vehicle is in motion, but in other cases it is only desired to engage the pto when the vehicle is stationary.
  • the pto may be arranged to be driven by the engine or via the gearbox.
  • the pto shaft and the pto are usually arranged on the transmission device so that the same engine can be used for motor vehicles with a pto as for motor vehicles without a pto, but it is also possible to have the pto shaft connected directly to the engine.
  • some form of connecting device is required between the engine and the pto. Where the pto is driven via a transmission device, it is desirable that the connecting device be so arranged that the main clutch need not be used for engaging the pto.
  • European patent application EP 1147936 A2 describes a pto drive mechanism of a work vehicle.
  • the work vehicle has a connecting device between the engine and the drive means. It is desirable to be able to use a variety of speed ratios between the engine and the pto shaft. In today's motor vehicles, this usually entails a great deal of work on the motor vehicle or the transmission device.
  • An object of the present invention is to provide a motor vehicle which has an engine and a pto shaft whereby the speed ratio between the engine and the pto shaft can in a simpler manner than in today's motor vehicles be varied between different versions of the same kind of motor vehicle.
  • Another object of the present invention is to provide a transmission device for a motor vehicle, which transmission device comprises a mainshaft and a pto shaft, whereby the speed ratio between the mainshaft and the pto shaft can in a simpler manner than in today's transmission devices be varied between different versions of the same kind of transmission device.
  • a further object of the present invention is to provide a motor vehicle with has a pto whereby the power losses when the pto is not being used are less than in motor vehicles according to the state of the art.
  • a yet further object of the present invention is to provide a transmission device which has a pto whereby the power losses when the pto is not being used are less than in motor vehicles according to the state of the art.
  • a first aspect of the present invention presents a motor vehicle comprising an engine with an output shaft and a pto shaft which is adapted to being driven by the output shaft and is intended for transfer of power from the engine to an external machine.
  • the motor vehicle is characterised in that it comprises a first pto wheel adapted to being driven by the output shaft, a second pto wheel arranged on the pto shaft, and a power transmission means arranged between the first pto wheel and the second pto wheel to transmit power from the first pto wheel to the second pto wheel.
  • Having a power transmission means between the pto wheels makes it possible to change the size of either of the power transmission wheels, and hence the speed ratio between the engine and the pto, without having to alter the mutual distance between the second pto wheel and the shaft on which the first pto wheel is arranged. It is thus possible to adapt each separate gearbox with respect to the speed ratio between the engine and the pto without greater modifications than changing the size of one of the pto wheels and changing the size of the power transmission means.
  • the first pto wheel may be arranged on the output shaft, in which case the pto is with advantage arranged directly on the engine.
  • the motor vehicle may also have a transmission device which comprises a casing, a mainshaft supported in the casing, a first primary gearwheel arranged on the mainshaft, a countershaft supported in the casing, and a first countershaft gearwheel which is arranged on the countershaft and in engagement with the first primary gearwheel, whereby the engine's output shaft is adapted to driving the mainshaft and the first pto wheel is arranged on either the mainshaft or the countershaft.
  • Transmission devices with a mainshaft and a countershaft are usually applicable in motor vehicles for changing the speed ratio between the engine and powered wheels during operation. Engine manufacture is facilitated by having the pto driven by a shaft in the transmission device instead of by the output shaft from the engine.
  • the transmission device may also comprise a second primary gearwheel arranged on the mainshaft, and a second countershaft gearwheel which is arranged on the countershaft and in engagement with the second primary gearwheel, whereby each of the primary gearwheels is lockable relative to the mainshaft for choice of speed ratio between the mainshaft and the countershaft.
  • Transmission devices in motor vehicles are usually arranged in this way in order to provide more than one speed ratio between the engine and powered wheels.
  • the first pto wheel and the second pto wheel may be gearwheels. Having pto wheels in the form of gearwheels makes assured engagement possible between pto wheels and the power transmission means.
  • the power transmission means is with advantage either a chain or a toothed belt.
  • the first pto wheel and the second pto wheel may be pulleys, in which case the power transmission means will be a belt.
  • the belt may for example be a V- belt.
  • Motor vehicles may also comprise a pto clutch for engaging and disengaging the pto.
  • This is advantageous in that the pto can then be disengaged without using a clutch between the engine and any transmission device and without switching off the engine.
  • a pto clutch thus makes it possible, for example, for the pto to be disconnected while the vehicle is in motion.
  • There may be a plurality of reasons for disengaging the pto.
  • One reason may be wishing to change the external machine which is connected to the pto.
  • the pto clutch may be adapted to locking and freeing the first pto wheel relative to the shaft on which the first pto wheel is arranged. Arranging the pto clutch in this manner minimises the mechanical parts which have to be driven by the engine when the pto is disengaged.
  • the pto clutch may take the form of a pto locking means arranged for movement on the shaft on which the first pto wheel is arranged, between first and second positions in which the first pto wheel is respectively locked to and free from the shaft on which the first pto wheel is arranged.
  • the pto locking device may be provided with a synchronising device such as those used in transmission devices arranged between the engine and powered wheels in motor vehicles according to the state of the art.
  • a second aspect of the present invention presents a transmission device for a motor vehicle, which transmission device comprises a casing, a mainshaft supported in the casing, a first primary gearwheel arranged on the mainshaft, a countershaft supported in the casing, a first countershaft pto wheel arranged on the countershaft and in engagement with the first primary gearwheel, and a pto shaft intended to draw power from the engine and adapted to being driven by either the mainshaft or the countershaft.
  • the transmission device is characterised in that it comprises a first pto wheel arranged on either the mainshaft or the countershaft, a second pto wheel arranged on the pto shaft, and a power transmission means arranged between the first pto wheel and the second pto wheel to transmit power between the first pto wheel and the second pto wheel.
  • a transmission device according to the second aspect of the present invention affords the same advantages as described above in connection with the first aspect of the present invention.
  • Fig. 1 depicts a motor vehicle with a transmission device according to an embodiment of the present invention.
  • Fig. 2 depicts in cross-section a transmission device according to a first embodiment of the invention.
  • Fig. 3 depicts part of a motor vehicle according to an alternative embodiment of the present invention.
  • Fig. 1 depicts a motor vehicle 101 according to an embodiment of the present invention.
  • the motor vehicle 101 comprises a first powered wheel 103 and a second powered wheel 104 which are adapted to being driven by a differential gear 102.
  • the motor vehicle 101 further comprises an engine 118, a transmission device 1 connected to the engine 118, and a universal shaft 106 arranged between the transmission device 1 and the differential gear 102.
  • a pto 3 is arranged from the transmission device 1.
  • the motor vehicle 101 also comprises a driving cab 107 inside which there is an operating device 108 for engaging and disengaging the pto 3.
  • Fig. 2 depicts in cross-section a transmission device 1 according to a first embodiment of the invention, which transmission device 1 comprises a casing 2.
  • a mainshaft 5 is supported in the casing 2.
  • the mainshaft 5 comprises an input shaft 6 and a primary shaft 7 which are rotatable relative to one another.
  • the engine 118 has to be connected to the input shaft 6.
  • On the input shaft 6 there is an input gearwheel 8 in engagement with an input countershaft gearwheel 9.
  • On the primary shaft 7 there are a first primary gearwheel 10 and a second primary gearwheel 11.
  • the transmission device 1 also comprises a countershaft 16 on which there is a first countershaft gearwheel 17 in engagement with the first primary gearwheel 10, and a second countershaft gearwheel 18 in engagement with the second primary gearwheel 11.
  • the two countershaft gearwheels 17, 18 are locked to the countershaft 16.
  • the speed ratio between the input shaft 6 and the primary shaft 5 depends on which of the primary gearwheels 10, 11 is locked to the primary shaft.
  • the transmission device 1 there is also a pto shaft 12 on which is arranged a pto 3 to which an external machine can be connected.
  • the transmission device 1 comprises a first pto wheel 19 arranged on the countershaft 16, and a second pto wheel 20 arranged on the pto shaft 12.
  • a power transmission means 13 in the form of a driving belt is arranged round the first pto wheel 19 and the second pto wheel 20 so that the second pto wheel 20 is adapted to being driven by the first pto wheel 19.
  • the speed ratio between the countershaft 16 and the pto shaft 12 is determined by the proportion between the size of the first pto wheel 19 and the second pto wheel 20.
  • the driving belt may be any desired type of belt and may for example be a V- belt or a toothed belt.
  • a pto locking means 25 with a groove 26 is arranged on the countershaft 16 in such a way as to be movable between a first position in which the first pto wheel 19 is locked relative to the countershaft 16 and a second position, depicted in Fig. 2 in which the pto wheel 19 is freed from the countershaft and therefore the pto 3 is not driven by the engine 118.
  • the pto locking means 25 may be of the same type as the locking means 14 used for locking the primary gearwheels 10, 11.
  • the transmission device comprises a support shaft 21, and actuating means 23 arranged on the support shaft 21 in such a way as to be movable along the support shaft 21.
  • the actuating means 23 comprises a protrusion 4 in engagement with the groove 26 on the pto locking means.
  • a hydraulic piston 22 is arranged between the casing 2 and the actuating means 23 and is adapted to moving the actuating means 23 along the support shaft 21.
  • the hydraulic piston 22 is adapted to being controlled by the operating device 108.
  • the pto locking means 25 will thus be disconnected from the first pto wheel 19, which will thus be freed from the countershaft 16. As compared with a motor vehicle and a transmission device with no pto 3, there are thus no further components other than the pto locking means 25 which have to be powered by the engine 118 when the pto 3 is disengaged.
  • Fig. 3 depicts part of a motor vehicle according to an alternative embodiment of the invention.
  • a first pto wheel 19 is arranged on the output shaft 27 from the engine 118.
  • a second pto wheel 20 is arranged on the pto shaft 12.
  • a chain 28 is arranged between the first pto wheel 19 and the second pto wheel 20, to transmit driving power from the output shaft 27 and the pto.
  • the first pto wheel 19 and the second pto wheel 20 are arranged within the same casing, but it is possible to arrange the pto wheels 19, 20 within different casings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

L'invention concerne un véhicule à moteur (101) avec une prise de force (3) et un dispositif de transmission (1) avec une prise de force (3), au moyen duquel la PdF (3) est destinée à transmettre de la puissance d'un moteur (118) à une machine extérieure. Le véhicule à moteur (101) et le dispositif de transmission (1) comprennent une première roue (19) de PdF apte à être entraînée par l'arbre de sortie (27), une seconde roue (20) de PdF disposée sur l'arbre (12) de PdF et des moyens de transmission de puissance disposés entre la première roue (19) de PdF et la seconde roue (20) de PdF pour transmettre la puissance de la première roue (19) de PdF à la seconde roue (20) de PdF.
PCT/SE2007/050297 2006-05-05 2007-05-02 Boîte de vitesses avec axe de prise de force Ceased WO2007129977A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07748458A EP2015953A4 (fr) 2006-05-05 2007-05-02 Boîte de vitesses avec axe de prise de force

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0601008-6 2006-05-05
SE0601008A SE529867C2 (sv) 2006-05-05 2006-05-05 Transmissionsanordning med kraftuttagsaxel

Publications (1)

Publication Number Publication Date
WO2007129977A1 true WO2007129977A1 (fr) 2007-11-15

Family

ID=38668007

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/050297 Ceased WO2007129977A1 (fr) 2006-05-05 2007-05-02 Boîte de vitesses avec axe de prise de force

Country Status (3)

Country Link
EP (1) EP2015953A4 (fr)
SE (1) SE529867C2 (fr)
WO (1) WO2007129977A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH026227A (ja) * 1988-06-22 1990-01-10 Iseki & Co Ltd 乗用管理機のｐｔｏ取出装置
JPH04237636A (ja) * 1991-01-16 1992-08-26 Kubota Corp 芝刈機の伝動構造
US5526892A (en) 1993-12-07 1996-06-18 Kubota Corporation Vehicle having a differential with a vertical drive pinion shaft
EP1147936A2 (fr) 2000-04-20 2001-10-24 Case Steyr Landmaschinentechnik GmbH Méthode de commande du mécanisme d'entrâinement de prise de force d'un véhicule utilitaire
WO2002016157A1 (fr) 2000-08-25 2002-02-28 Gibbs Technologies Limited Groupe motopropulseur
EP1310399A2 (fr) 2001-11-07 2003-05-14 Kanzaki Kokyukoki Mfg. Co., Ltd. Dispositif d'une prise de force d'un véhicule de travail
SE524662C2 (sv) * 2003-01-14 2004-09-14 Volvo Lastvagnar Ab Växlingsförfarande för fordon med inkopplat kopplingsberoende kraftuttag
SE524975C2 (sv) * 2003-12-17 2004-11-02 Volvo Lastvagnar Ab Automatiskt växlingsförfarande för fordon med inkopplat kopplingsberoende kraftuttag samt automatiskt urkopplingsförfarande av ett kopplingsberoende kraftuttag
SE525770C2 (sv) * 2003-09-24 2005-04-26 Volvo Lastvagnar Ab Förfarande för reglering av rotationsvarvtalet hos ett kopplingsoberoende kraftuttag

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935274A1 (de) * 1979-08-31 1981-03-12 GRIESKIRCHEN ALOIS PöTTINGER MASCHINENFABRIK GMBH Selbstfahrende maschine mit arbeitsgeraeten, insbesondere landmaschine.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH026227A (ja) * 1988-06-22 1990-01-10 Iseki & Co Ltd 乗用管理機のｐｔｏ取出装置
JPH04237636A (ja) * 1991-01-16 1992-08-26 Kubota Corp 芝刈機の伝動構造
US5526892A (en) 1993-12-07 1996-06-18 Kubota Corporation Vehicle having a differential with a vertical drive pinion shaft
EP1147936A2 (fr) 2000-04-20 2001-10-24 Case Steyr Landmaschinentechnik GmbH Méthode de commande du mécanisme d'entrâinement de prise de force d'un véhicule utilitaire
WO2002016157A1 (fr) 2000-08-25 2002-02-28 Gibbs Technologies Limited Groupe motopropulseur
EP1310399A2 (fr) 2001-11-07 2003-05-14 Kanzaki Kokyukoki Mfg. Co., Ltd. Dispositif d'une prise de force d'un véhicule de travail
SE524662C2 (sv) * 2003-01-14 2004-09-14 Volvo Lastvagnar Ab Växlingsförfarande för fordon med inkopplat kopplingsberoende kraftuttag
SE525770C2 (sv) * 2003-09-24 2005-04-26 Volvo Lastvagnar Ab Förfarande för reglering av rotationsvarvtalet hos ett kopplingsoberoende kraftuttag
SE524975C2 (sv) * 2003-12-17 2004-11-02 Volvo Lastvagnar Ab Automatiskt växlingsförfarande för fordon med inkopplat kopplingsberoende kraftuttag samt automatiskt urkopplingsförfarande av ett kopplingsberoende kraftuttag
WO2005058629A1 (fr) 2003-12-17 2005-06-30 Volvo Lastvagnar Ab Procede de changement de vitesse automatique destine a des vehicules a prise de force dependante de l'accouplement accouplee et procede de desaccouplement automatique d'une prise de force dependante de l'accouplement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2015953A4

Also Published As

Publication number Publication date
SE0601008L (sv) 2007-11-06
SE529867C2 (sv) 2007-12-18
EP2015953A1 (fr) 2009-01-21
EP2015953A4 (fr) 2010-05-05

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