• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The subject invention is a vehicle transmission, especially for all-terrain vehicles and / or work machines, in which several gears are synchronized switchable. In order to allow the most uniform and independent of switching operations, as they may be required especially in delicate operations or in the alpine area and agricultural area, the power shift of the transmission (3) from a vehicle engine (1) driven hydraulic pump (9) acted upon hydraulically engageable hydraulic motor (10) upstream or disengageable, wherein the switching (8) for engaging and disengaging the hydraulic motor (10), the switching (7) for the forward or Rückwärtsseinschaltgetriebe and also the mechanical transmission (3) a common shaft are arranged.
    公开号:CH707839B1
    申请号:CH00474/14
    申请日:2014-03-27
    公开日:2017-09-15
    发明作者:Gerhard Gattermair Ing
    申请人:Reformwerke Bauer & Co Ges M B H；
    IPC主号:
    专利说明:

    The invention relates to a vehicle transmission, in particular for off-road vehicles and / or work machines, in which a plurality of gears are synchronized switchable, wherein the shift train of the gearbox one of a driven by the vehicle engine hydraulic pump can be acted upon or disengaged upstream disengageable ,
    As stated, the gearbox is especially for all-terrain vehicles, so working vehicles in the agricultural sector or in the mountains or even for work machines, thought, in which a good off-road capability and high reliability is required. In such vehicles in the alpine agricultural sector as well as in the municipal sector, two different approaches are currently used for off-road driving or work in extreme slopes and critical environmental conditions. On the one hand complex mechanical multi-stage manual transmission are used, which in principle any optimal speed range of the drive wheels is to be switched via clutch and resulting in different speed ranges of the drive motor and thus different performance specifications. However, these embodiments have the disadvantage that, in spite of many gradations just always can be switched gradually, which always has to be disengaged at each switching operation, whereby the power flow between the engine and driven wheels is interrupted.
    These disadvantages are optionally avoided with hydrostatic transmissions, but these transmissions have significantly lower efficiencies than manual transmissions. However, they have the advantage of infinitely variable speed adaptation with a largely optimal speed range of the drive unit. Another disadvantage of the purely hydrostatic drive of such vehicles is also that a high proportion by weight is present, since the hydrostatic drive must be designed for the full drive torque.
    Combinations of the two types of drive described are e.g. can be removed from the DE 10 2008 051 387 A1, DE 10 2006 025 348 A1 or EP 16 262 010 A2 which determines the type mentioned at the outset. The embodiments described in these documents have separate drive trains, which more space and separate controls are needed.
    The invention is based on the object to improve a transmission of the type mentioned so that while avoiding the disadvantages of the mechanical transmission and the hydrostatic transmission, a space-saving and easy-to-use design is achieved.
    According to the invention, this object is achieved in that the switching for engagement and disengagement of the hydraulic motor, the switching for the forward or reverse gear and also the mechanical transmission are arranged on a common shaft.
    This ensures that a simpler construction of the transmission is achieved, with both a compact design and a lower susceptibility is achieved. Another significant advantage is that lower power losses are given, since no additional power transmission drives must be provided. Finally, the transmission still has the advantage that it is suitable for the modular system, since one and the same transmission can be used for both drive variants and only ancillaries are connected or not connected.
    Advantageously, the hydraulic pump downstream of the vehicle clutch mounted on the input side of the transmission and to the transmission input shaft on or be uncoupled from this. This ensures that the drive hydraulics for the vehicle can be operated independently of any existing in the vehicle hydraulics, which means that driven by a possibly existing PTO implements can be controlled independently of the engine speed and the hydraulics of the drive. Furthermore, the direction of rotation of the hydraulic motor via a control valve can be reversible, which has the advantage that a reversal of direction without dropping the engine to idle speed and can be made to switch mechanically in the transmission, which is particularly advantageous for maneuvers in difficult terrain. Finally, the speed of the hydraulic motor can be controlled independently of the speed of the vehicle engine, in particular via a control valve, which ensures that the vehicle engine always runs in the optimum speed range and the drive or the feed speed of the vehicle are controlled depending on the terrain conditions and the work carried out can.
    In the drawing, an embodiment of the subject invention is shown, wherein in Fig. 1 with thick solid line of the power flow at normal speed and manual transmission is located and in Fig. 2, the power flow at upstream hydraulic drive.
    1, the drive motor of the vehicle is called, which drives the transmission 3 via a vehicle clutch 2. In the manual transmission, a normal gear shift with switching stages 4 and 5 are provided for the gears 1, 2 and 3 and 4 and an intermediate gear 6 for a tighter gradation of the gears. Furthermore, the transmission has a circuit for forward and reverse 7.
    8, the coupling of a hydraulic drive is referred to, which consists of a regulated hydraulic pump 9 and a controlled hydraulic motor 10, referred to. The motor or the pump as standard attached control valves are denoted by 23 and 22, and serve both the speed control as well as the direction of rotation of the hydraulic motor, the switchover 8 for engaging and disengaging the hydraulic motor 10, the switching 7 for the
    Forward or Rückwärtsseinschaltgetriebe and also the mechanical transmission 3 are arranged on a common shaft.
    The hydraulic pump 9 is drivable via a clutch 11 and corresponding intermediate gears from the drive motor 1 ago.
    With 12 and 13, differential or differential lock gear for the rear wheels 14 and for the front wheels 15 are referred to, which however are state of the art.
    16 with the coupling for the front PTO shaft 18 and 19 denotes the coupling for the rear PTO shaft 17, wherein the PTO drive shaft 21 via a separate partition of the clutch 2 is switched on or off.
    During operation of the vehicle in normal operation, as shown in Fig. 1 by the solid line, the power flow from the engine 1 via the clutch 2, the intermediate gear 6 and the transmission 5 (fourth gear) and the two differentials 12th and 13 to the drive wheels 14 and 15. As shown, a four-wheel drive is permanently provided in the present case, the distribution between front wheels 15 and rear wheels 14 via a countershaft 20, which consists of a hollow shaft through which the PTO drive shaft 21 is passed, which at one end, the clutch 16 for the front PTO 18 and at the other end, the clutch 19 for the rear PTO 17 drives.
    If, however, a hydraulic drive is desired, as shown in FIG. 2, the drive flow via the clutch 11 to the hydraulic pump 9, which drives the hydraulic motor 10 which drives the mechanical transmission analog to the course of FIG. 1 via the connection 8. However, a lower gear, in the present case, the third gear, switched.
    In this hydraulic embodiment, the driving speed on the speed of the controllable hydraulic pump and / or by means of the vehicle engine speed or separately controllable hydraulic motor 10 can be controlled accordingly, by means of this hydraulic motor 10, a uniform drive can be done, without the mechanical gears have to be changed.
    It is thus possible with the subject of the application, a combination of hydraulic drive and manual transmission, which is particularly advantageous for tricky off-road driving or tricky work in the alpine area.
    REFERENCE SIGNS LIST 1 Drive motor, vehicle engine 2 Vehicle clutch 3 Manual transmission 4 Shifting stage 1st and 2nd gear 5 Shifting gear 3rd and 4th gear 6 Gearbox 7 Forward or reverse gearbox (mechanical) 8 Mechanical or hydraulic changeover 9 Hydraulic pump 10 Hydraulic motor 11 Clutch 12 Differential lock Rear wheels 13 Differential lock Front wheels 14 Rear wheels 15 Front wheels 16 Front PTO clutch 17 Rear PTO 18 Front PTO
    权利要求:
    Claims (2)
    [1]
    1. Vehicle transmission, in particular for off-road vehicles and / or work machines, in which a plurality of gears are mechanically synchronized synchronized, wherein the power train of the gearbox (3) one of a vehicle engine (1) driven Flydraulikpumpe (9) acted upon hydraulic motor (10) a or disengageable upstream, characterized in that the switching (8) for engaging and disengaging the hydraulic motor (10), the switching for the forward or Rückwärtseinschaltgetriebe (7) and also the mechanical transmission (3) on a common shaft are arranged.
    [2]
    2. Vehicle transmission according to claim 1, characterized in that the hydraulic pump (9) of the vehicle clutch (2) downstream of the input of the gearbox (3) and attached to the transmission input shaft on or can be uncoupled from this.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0716248B1|1998-02-11|Power shift gearing with five-shaft orbital transmission
    EP2195553B1|2011-11-16|Power split transmission
    EP1329648B1|2007-11-07|Powershift transmission with hydrodynamic and optional mechanical path
    DE102010029597A1|2011-12-01|transmission assembly
    EP2195557A1|2010-06-16|Power split transmission
    EP2487385A2|2012-08-15|Speed switching drive for motor vehicles
    DE102008001612A1|2009-11-12|Mobile construction or agricultural machine has power take-off gearbox with hydrostatic drive and mechanical drives located above input shaft
    DE102011077597A1|2012-12-20|Gear wheel change transmission for motor vehicle, particularly agricultural or municipal utility vehicle, has split group, which transmits rotary motion of drive shaft with choice of one from multiple load-switchable level transmissions
    EP2461073B1|2014-12-31|Hydro-mechanical drive
    EP3126710B1|2020-01-08|Gearshift transmission for a motor vehicle
    DE102012211531A1|2014-01-09|Gearbox with switchable variator
    WO2011038941A1|2011-04-07|Transmission device with power splitting
    AT512975B1|2014-04-15|Hydromechanical synchronous transmission
    DE102013220919B4|2022-01-13|Method of controlling a continuously variable transmission
    DE3707382A1|1988-09-15|Hydrostatic-mechanical wheel drive
    DE102010003944A1|2011-12-01|Transmission device for drive train of tractor, has two planetary gear devices coaxial arranged to each other, and manual transmission formed with one of planetary gear devices to represent translation regions
    DE10201837A1|2003-07-31|Power shift transmission with hydrodynamic and mechanical power path
    DE718783C|1942-03-20|Multi-speed gear change transmission for motor vehicles
    EP3002146B1|2017-04-19|Transmission assembly
    DE10259424A1|2004-07-01|Power-shift multiple-gear gearbox for a motor vehicle has a casing, a feeder shaft, driving gearwheels, countershafts, an output shaft, driven gearwheels and distributing gearwheels
    DE102011011169B4|2017-03-23|Drive device for motor vehicles
    EP2921334A1|2015-09-23|Distributor gear
    DE102019207925A1|2020-12-03|Power take-off gear and agricultural work machine
    EP3669100B1|2021-03-17|Range-change transmission device
    DE10248826A1|2004-04-29|Multispeed reversing gear, selectable under load, has input shaft, output shaft and layshafts installed asymmetrically to one another in gearcase, and gear control and change filter can be installed on outer side of gearcase
    同族专利:
    公开号 | 公开日
    CH707839A2|2014-09-30|
    AT512975A1|2013-12-15|
    AT512975B1|2014-04-15|
    EP2644945A1|2013-10-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0195452B1|1985-03-21|1990-10-17|Friedrich Prof. Dr.-Ing. Jarchow|Contunuously variable compound power shift transmission of the range-speed type with multiple power path|
    AT414345B|2004-08-10|2013-08-15|Hofer Forschungs & Entw Gmbh|POWER BRANCH FOR MOTOR VEHICLES|
    DE102006025348A1|2006-05-31|2007-12-06|Sauer-Danfoss Gmbh & Co Ohg|Hydrostatic-mechanical transmission|
    DE102008051387A1|2008-10-11|2010-04-15|Daimler Ag|Gear box i.e. commercial vehicle gear box, for use in drive train of vehicle, has rotation speed adjustment unit adjusting rotation speeds of connecting element and gear box input element with respect to each other in operating condition|DE102016107941A1|2016-04-28|2017-11-02|Max Holder Gmbh|Transmission for a mobile work machine and drive unit|
    法律状态:
    2020-10-30| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    ATA369/2012A|AT512975B1|2012-03-27|2012-03-27|Hydromechanical synchronous transmission|
    EP13161286.3A|EP2644945A1|2012-03-27|2013-03-27|Vehicle transmission|
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