• 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:
    Transmission, with a transmission housing (10), with at least one drive-side shaft, with at least one output-side shaft, and with at least one intermeshing gears having gear ratio, wherein the transmission housing (10) has a toothed space (11), in which received the intermeshing gears are, and a separate from the tooth space (11) storage space (12), are arranged in which shaft bearings; wherein the spline space (11) in which spline lubricating oil is collectible can be operated under partial vacuum pressure or atmospheric pressure under partial vacuum operation, whereas the storage space (12) in which bearing lubricating oil is accumulated is constantly operated under atmospheric pressure in atmospheric operation; wherein the storage lubricating oil which can be collected in the storage space (12) can be guided, starting from the storage space (12), in the direction of a transmission-external oil collecting container (14); wherein the gearing lubricating oil which can be collected in the gearing space (11), starting from the gearing space (11), can also be fed separately from the bearing greasing oil in the direction of the gearing-external oil collecting vessel (14), namely such that the gearing lubrication oil is supplied from the gearing space (18) in partial vacuum operation. 11) in the gear-external oil collecting container (14) is conveyed, and that in the gaseous lubricating oil at least via a check valve (20) from the toothing space (11) in the gear-external oil collecting container (14) is conveyed.
    公开号:CH711015B1
    申请号:CH5042016
    申请日:2016-04-15
    公开日:2019-11-29
    发明作者:Sterns Dietmar；Weigand Jürgen；Kraus Oliver
    申请人:Renk Ag；
    IPC主号:
    专利说明:

    Description: The invention relates to a transmission.
    From DE 19 860 353 C1 a transmission with a gear housing, with a drive-side shaft, an output-side shaft and at least one intermeshing gearwheels having a gear ratio is known. The gearbox has chambers or spaces that are separated from one another by seals. Intermeshing gears are positioned in a toothing space that can be operated under partial vacuum. In partial vacuum operation, gear lubricating oil can be directed onto the meshing gears of the respective gear ratio. A storage space is always separated from this toothing space and is always operated under atmospheric pressure. Bearing lubricating oil can be directed onto the bearings within the storage space for lubricating the bearings. In known gears, the gear lubricating oil required for lubrication in the gear space and the bearing lubricating oil required for lubrication in the storage space are discharged from the gear unit via a common return, namely in the direction of an oil-collecting container external to the gear unit. For this purpose, it is necessary to provide a further gear space in the gearbox, in which the gear lubricating oil can be collected together with the bearing lubricating oil, in order to then guide the same via a common oil return in the direction of the oil-collecting container external to the gearbox. This results in a relatively complex construction of the transmission. There is therefore a need for a gearbox with a simpler structure.
    [0003] Further similar types of gears are known from US 3,489,034 A, DE 2,256,681 A and DE 603 016 120 T2.
    Proceeding from this, the object of the invention is to create a new type of transmission.
    This object is achieved by a transmission according to claim 1. The transmission has a transmission housing, at least one input shaft, at least one output shaft, and at least one gear stage with intermeshing gears. The gear housing has a toothing space, in which intermeshing gearwheels are accommodated, and a bearing space, separated from the toothing space, in which shaft bearings are arranged. The toothing space in which toothing lubricating oil can be collected can be operated either in atmospheric operation under atmospheric pressure or in partial vacuum operation under partial vacuum pressure, whereas the storage space in which bearing lubricating oil can be collected is operated permanently under atmospheric pressure. The bearing lubricating oil that can be collected in the storage room can be led directly from the storage room in the direction of an oil-collecting container external to the gearbox. The gear lubricating oil that can be collected in the gear space can be fed directly from the gear space, at least in some sections separately from the bearing lubricating oil, in the direction of the oil-collecting container external to the gearbox, namely in such a way that in partial vacuum operation the gear lubricating oil can be pumped from the gear space into the gear-oil-external oil-lubricating oil lubricating tank in the gearbox-external atmosphere can be conveyed at least via a check valve from the toothing space into the oil-collecting container external to the transmission.
    According to the invention, the bearing lubricating oil is guided starting from the storage space in the direction of the oil-collecting container external to the transmission. Furthermore, the gear lubricating oil, starting at least partially in sections from the gear lubricating space, is also guided in the direction of the oil-collecting container external to the gearbox from the bearing lubricating oil. It is therefore within the meaning of the present invention to no longer collect the gear lubricating oil and the bearing lubricating oil in a corresponding, gearbox-internal chamber and, starting from this gearbox-internal chamber, via a common oil return in the direction of the gearbox-external oil collection container, rather the gear lubricating oil is based on Gear chamber and the bearing lubricating oil are discharged from the storage room directly towards the oil collection container.
    As a result, a transmission with a simpler structure can be provided. Thus, the internal or external chamber required according to the prior art is omitted, which according to the prior art serves to collect or combine the gear lubricating oil and the bearing lubricating oil inside or outside the gear housing. In this context, hydraulic shut-off valves and seals required according to the prior art are also dispensed with.
    Preferably, the gear lubricating oil in atmospheric operation via the check valve and additionally supported via the feed pump from the gear space in the transmission-external oil reservoir can be conveyed. In this way, the gear lubricating oil can be led in a particularly advantageous manner starting from the gear space into the oil-collecting container external to the gearbox.
    According to an advantageous development, a first oil line leads from the toothing space in the direction of the oil-collecting container external to the transmission, the check valve being assigned to the first oil line. Starting from the toothing space, a second oil line also leads in the direction of the oil-collecting container external to the transmission, the feed pump being assigned to the second oil line. Starting from the storage room, a third oil line leads to the oil sump outside the gearbox. This configuration of the transmission allows simple guiding of gear lubricating oil and bearing lubricating oil, at least in sections, starting from the transmission housing in the direction of the oil-collecting container external to the transmission.
    CH 711 015 B1 According to a further advantageous development, a vacuum pump interacts with the toothing space, exhaust air from the vacuum pump being able to be discharged into a region of the transmission which is under atmospheric pressure while providing a closed oil circuit. There is no risk of oil getting into the environment through the vacuum pump.
    According to a further advantageous development, a valve interacts with the vacuum pump, which can then be opened when the partial vacuum pressure in the tooth space falls below a limit value in order to keep the partial vacuum pressure at the limit value, the valve providing a closed oil circuit an area of the transmission under atmospheric pressure is coupled. The partial vacuum pressure in the toothing space can hereby be set particularly simply and reliably, and without the risk of oil getting into the surroundings and ambient air into the toothing interior / gearbox interior.
    [0012] Preferred developments of the invention result from the dependent claims and the following description. Exemplary embodiments of the invention are explained in more detail with reference to the drawing, without being restricted to this. It shows:
    1: a block diagram of hydraulic-side assemblies of a first transmission according to the invention;
    2 shows a block diagram of hydraulic-side assemblies of a second transmission according to the invention;
    3 shows a block diagram of hydraulic-side assemblies of a third transmission according to the invention; and
    4: a block diagram of hydraulic-side assemblies of a fourth transmission according to the invention.
    The invention relates to a transmission, for example a turbo spur gear.
    Such a transmission has a transmission housing 10, which is shown in a highly schematic manner in FIG. 1. 1 shows a toothing space 11 and a storage space 12 of the gear housing 10.
    The transmission also has at least one input shaft (not shown) and at least one output shaft (not shown). At least one transmission stage (not shown) with intermeshing gearwheels (not shown) is connected between the or each drive-side shaft of the transmission and the or each output-side shaft of the transmission in order to provide a defined transmission ratio for the transmission. The intermeshing gears of the respective gear ratio are positioned or accommodated in the toothing space 11 of the gear housing 10. Bearings for shafts that carry these gears are accommodated or positioned in the storage space 12 of the gear housing 10.
    1, the toothing space 11 is separated from the storage space 12 by a partition 13, with the partition 13 typically extending the shafts which carry the gearwheels of the respective gear ratio, with corresponding shaft passages in the partition 13 through seals, namely Vacuum seals are sealed. Accordingly, the toothing space 11 is preferably separated from the storage space 12 via vacuum seals (not shown).
    In the gear space 11 of the gear housing 10 gear lubricating oil is required to lubricate the meshing gears of the respective gear ratio. Bearing lubricating oil is required in the storage space 12 in order to lubricate the shaft bearings which are arranged within the storage space 12.
    The gear lubricating oil used for the lubrication of the gears and the bearing lubricating oil used for the lubrication of the shaft bearings is kept ready in an oil-collecting container 14 external to the transmission and can be guided starting from the oil-collecting container 14 external to the transmission both in the direction of the toothing space 11 and in the direction of the storage space 12, to lubricate the gears positioned in the toothing space 11 and the shaft bearings positioned in the bearing space 12.
    In Fig. 1, only the guidance of the gear lubricating oil is shown starting from the external gear oil reservoir 14 via an oil pump 15 and an oil line 16 in the direction of the gear space 11. For the sake of simplicity, the guidance of the bearing lubricating oil starting from the oil-collecting container external to the transmission in the direction of the storage space 12 is not shown.
    The toothing space 11 can be operated both in a partial vacuum operation under partial vacuum pressure and alternatively in atmospheric operation under atmospheric pressure. For this purpose, a vacuum pump 23 is assigned to the toothing space 11, by means of which a defined partial vacuum pressure of, for example, 100 mbar or even 80 mbar can be set in the partial vacuum operation of the toothing space 11 in the toothing space 11. Both in partial vacuum operation and in atmospheric operation, the toothing lubricating oil, which starts from the oil-external reservoir 14 outside the gearbox and is directed toward the toothing space 11, is sprayed via a so-called oil tooth spray (not shown) in the direction of the gearwheels of the respective gear ratio to be lubricated.
    The present invention relates primarily to such details of the transmission, by means of which the gear lubricating oil used for lubricating the gears and the bearing used for lubricating the shaft bearings
    CH 711 015 B1
    Lubricating oil defined can be discharged from the transmission housing 10 in the direction of the oil collection container 14 external to the transmission. The gear lubricating oil collects in the gear chamber 11 both in partial vacuum mode and in atmospheric mode. Likewise, the bearing lubricating oil used to lubricate the shaft bearings collects during operation in the storage room 12, which is permanently operated in atmospheric operation under atmospheric pressure. For proper operation, both the gear lubricating oil and the bearing lubricating oil must be returned or removed in the direction of the oil-collecting container 14 external to the transmission.
    The accumulating in the storage room 12 bearing lubricating oil can be discharged from the storage room 12 directly in the direction of the external oil collection container 14, namely via an oil line 17 which leads from the storage space 12 in the direction of the oil collection container 14.
    The toothed lubricating oil collected in the toothed space 11 can also be discharged from the toothed space 11, at least in sections, separately from the bearing lubricating oil directly in the direction of the oil-collecting container 14 external to the transmission, both in the partial vacuum operation of the toothed space 11 and in the same atmosphere operation. In partial vacuum operation of the toothing space 11, the toothing lubricating oil can be guided from the toothing space 11 via a feed pump 18 and an oil line 19 in the direction of the oil collection container 14. In the atmospheric operation of the toothing space 11, the toothing lubricating oil can be conveyed at least via a check valve 20 and a further oil line 21, starting from the toothing space 11 in the direction of the oil-collecting container 14 external to the transmission. The oil lines 19, 21 lead from the toothing space 11 directly in the direction of the oil-collecting container 14 external to the transmission.
    Then, when the toothing chamber 11 is operated in partial vacuum operation, the toothing lubricating oil collecting in the toothing chamber 11 is guided exclusively via the feed pump 18 and the oil line 19 starting from the toothing chamber 11 in the direction of the oil collection container 14, the check valve 20 is permanently closed. In atmospheric operation, on the other hand, the check valve 20 is opened depending on the fill level of the toothing lubricating oil within the toothing space 11 in order to lead the toothing lubricating oil from the toothing space 11 in the direction of the oil collection container 14 via the same and the oil line 21, wherein in the atmospheric operation the toothing lubricating oil preferably additionally supports the feed pump 18 is promoted from the toothing space 11 via the oil line 19 in the direction of the oil-collecting container 14 external to the transmission.
    Preferably, the oil line 19, which is associated with the feed pump 18, is assigned a check valve 22 downstream of the feed pump 18.
    [0026] As described above, at least three oil lines 17, 19, 21 lead from the transmission housing 10 in the direction of the oil-collecting container 14 external to the transmission.
    A first oil line 21 leads from the toothing space 11 in the direction of the oil collection container 14, with this first oil line 21 being associated with the check valve 20. A second oil line 19 also leads from the toothing space 11 in the direction of the oil-collecting container 14 external to the transmission, this second oil line 19 being associated with the feed pump 18 and preferably the check valve 22. A third oil line 17 leads from the storage space 12 in the direction of the oil-collecting container 14 external to the transmission.
    In the gearbox according to the invention, the gear lubricating oil with the bearing lubricating oil is therefore not collected within the gearbox or gearbox housing 10. Rather, the bearing lubricating oil is derived directly from the storage space 12 and the gear lubricating oil starting from the toothing space 11 in each case directly or directly in the direction of the oil collection container 14.
    In partial vacuum operation of the tooth space 11, the partial vacuum keeps the check valve 20 assigned to the oil line 21 closed. Gear lubricating oil can be fed from the external oil collection container 14 via the feed pump 15 and sprayed onto the intermeshing gears, which are arranged within the toothing space 11, via an oil not shown. This gear lubricating oil collects in the gear space 11 and is discharged from the same via the feed pump 18 and the oil line 19 in partial vacuum operation of the gear space 11.
    Then, when the toothing space 11 is operated under atmospheric pressure in atmospheric operation, the check valve 20 opens through toothing lubricating oil collecting in the toothing space 11, depending on the fill level thereof. In atmospheric operation, toothing lubricating oil can also be removed from the oil collection container 14 via the pump 15 and via the oil tooth shower are sprayed onto the gears to be lubricated. Gear lubricating oil, which collects in the gear space 11 during atmospheric operation, can be discharged via the check valve 20 and the corresponding oil line 21, assisted by the feed pump 18 and the corresponding oil line 19 in the direction of the oil collecting container 14.
    2 to 4 show modifications of the transmission of FIG. 1. Thus, it is provided in the transmission of FIG. 2 that the second oil line 19 as well as the third oil line 17 open into the first oil line 21, in the flow direction of the Oil seen downstream of the check valve 20. For all other details, reference can be made to the above statements. In the variant in FIG. 3, only the second oil line 19 opens into the first oil line 21, the third oil line 17 runs independently of the latter in the direction of the oil-collecting container 14 external to the transmission. With regard to all other details, reference can be made to the above statements. 4 shows another variant,
    CH 711 015 B1, in FIG. 4 the first oil line 21 and the second oil line 19 each opening into the third oil line 17. With regard to all other details, reference can be made to the above explanations.
    Another special feature of the transmission according to the invention is that the vacuum pump 23 cooperating with the toothing space 11 returns air sucked in, providing a closed oil circuit, into an area of the transmission under atmospheric pressure, for example into the storage space 12 or the third oil line 17 or downstream of the check valve 20 in the first oil line 21, whereby a closed oil circuit is provided. There is then no danger that oil can get into the environment via the vacuum pump 23.
    Then, when the vacuum pump 23 fails and the partial vacuum operation for the toothing space 11 can no longer be maintained, or when the feed pump 18 fails in the partial vacuum operation, the toothing space 11 can be quickly subjected to atmospheric pressure via a coupling device (not shown) become. The coupling device is connected between the toothing space 11 and an area of the transmission which is under atmospheric pressure. For example, the coupling device can be connected between the toothing space 11 and the storage space 12 or between the toothing space 11 and one of the oil lines under atmospheric pressure. A closed oil circuit is therefore also used for pressure equalization of the toothing space 11 when the vacuum pump 23 is selected or the delivery pump 18 fails. No external atmosphere is drawn in for the pressure compensation of the toothing space 11 if the vacuum pump 23 fails.
    It is further provided that a valve (not shown) cooperates with the vacuum pump 23, which can then be opened when the partial vacuum pressure in the toothing space 11 drops below a limit value in order to keep the partial vacuum pressure at this limit value, for example at about 200 mbar absolute. In this way, cavitation of the feed pump 18 can be prevented. The valve is in turn coupled to form a closed oil circuit with an area of the transmission which is at atmospheric pressure, for example with the storage space 12 or one of the oil lines 17, 19, 21, so that here too there is no risk of oil getting into the environment that foreign atmosphere is sucked in.
    It is therefore within the meaning of the present invention to discharge toothing lubricating oil collecting in the toothing space 11 and bearing lubricating oil collecting in the storage space 12, at least starting from the transmission housing 10, initially partially separated from the transmission housing 10 in the direction of the oil-collecting container 14 external to the transmission.
    For this purpose, at least three oil lines are preferably used, which, starting from the toothing space 11 and the storage space 12, lead in the direction of the oil collection container 14 and which can be combined if necessary.
    Both the exhaust air of the vacuum pump 23 and air, which is required in the event of failure of the vacuum pump 23 or the failure of the feed pump 18 to ventilate the toothing space 11 with atmospheric pressure, and also air which is required to maintain a limit value for the partial vacuum pressure in the toothing space 11 is required to form a closed oil circuit is coupled to an atmospheric area of the transmission, so that there is no risk that oil can get into the environment or in the oil collection container 14 or in the oil line (s) and / or that foreign atmosphere is sucked in.
    Reference symbol list [0038]
    gearbox
    tooth space
    storage room
    partition wall
    oil Collector
    oil pump
    oil line
    oil line
    feed pump
    oil line
    check valve
    oil line
    CH 711 015 B1
    check valve
    vacuum pump
    权利要求:
    Claims (10)
    [1]
    claims
    1. Gearbox with a gearbox housing (10), with at least one drive-side shaft, with at least one output-side shaft and with at least one intermeshing gearwheels having gear ratio, the gearbox (10) having a toothing space (11) in which the meshing gears are accommodated and has a bearing space (12), in which shaft bearings are arranged, which is separate from the toothing space (11);
    wherein the toothing space (11) in which toothing lubricating oil can be collected can be operated either in partial vacuum operation under partial vacuum pressure or in atmospheric operation under atmospheric pressure, whereas the storage space (12) in which bearing lubricating oil can be collected is operated permanently in atmospheric operation under atmospheric pressure;
    wherein the bearing lubricating oil that can be collected in the storage space (12) can be guided from the storage space (12) in the direction of an oil-collecting container (14) external to the transmission;
    The gear lubricating oil that can be collected in the gear space (11), starting from the gear space (11), can also be supplied, at least in sections, separately from the bearing lubricating oil in the direction of the oil-collecting container (14) external to the gearbox, namely in such a way that the gear lubricating oil in partial vacuum operation via a feed pump (18) from the gear space ( 11) can be conveyed into the oil-collecting container (14) external to the transmission, and that, in atmospheric operation, the gear lubricating oil can be conveyed from the toothing space (11) into the oil-collecting container (14) external to the transmission, at least via a check valve (20).
    [2]
    2. Transmission according to claim 1, characterized in that the gearing lubricating oil can be conveyed via the check valve (20) and additionally supported via the feed pump (18) from the toothing space (11) into the transmission-external oil collection container (14) in atmospheric operation.
    [3]
    3. Transmission according to claim 1 or 2, characterized in that starting from the toothing space (11) leads a first oil line (21) in the direction of the transmission-external oil collection container (14), the first oil line (21) being assigned the check valve (20) ;
    starting from the toothing space (11), a second oil line (19) also leads in the direction of the oil-collecting container (14) external to the transmission, the feed pump (18) being assigned to the second oil line (19);
    starting from the storage room (12) leads a third oil line (17) in the direction of the oil-external oil reservoir (14).
    [4]
    4. Transmission according to claim 3, characterized in that the second oil line (19) downstream of the feed pump (18) is assigned a further check valve (22).
    [5]
    5. Transmission according to claim 3 or 4, characterized in that the second oil line (19) opens into the first oil line (21) or into the third oil line (17).
    [6]
    6. Transmission according to one of claims 3 to 5, characterized in that the first oil line (21) in the third oil line (17) or the third oil line (17) opens into the first oil line (21).
    [7]
    7. Transmission according to one of claims 3 to 6, characterized by a with the toothing space (11) cooperating vacuum pump (23), exhaust air of the vacuum pump (23) can be discharged into a region of the transmission under atmospheric pressure while providing a closed oil circuit.
    [8]
    8. Transmission according to claim 7, characterized by a coupling device between the toothing space (11) and an area of the transmission under atmospheric pressure, via which in the event of failure of the vacuum pump (23) or the feed pump (18) in partial vacuum operation, the toothing space (11) with atmospheric pressure is acted upon.
    [9]
    9. Transmission according to claim 7 or 8, characterized by a with the vacuum pump (23) cooperating valve which, when the partial vacuum pressure in the tooth space (11) falls below a limit value, can be opened in order to keep the partial vacuum pressure at the limit value.
    [10]
    10. Transmission according to claim 9, characterized in that the valve is coupled with provision of a closed oil circuit with an area of the transmission under atmospheric pressure.
    CH 711 015 B1

    CH 711 015 B1
    类似技术:
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    DE3137947C2|1983-10-27|Lubricating oil system for gas turbine engines suitable for any flight maneuver
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    EP0030275A1|1981-06-17|Compressor, especially screw compressor with lubrication circuit
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    DE2527238B2|1980-12-11|Device for draining excess oil from the gear housing of a rotary piston compressor
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    CH716640A2|2021-03-31|Double pump and oil delivery device for pumping oil for an internal combustion engine.
    DE102018222511A1|2020-06-25|Internal combustion engine
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    同族专利:
    公开号 | 公开日
    CH711015A2|2016-10-31|
    FR3035164A1|2016-10-21|
    FR3035164B1|2019-08-23|
    US20160305537A1|2016-10-20|
    DE102015004991B3|2016-08-04|
    US10094466B2|2018-10-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2064703A|1934-12-06|1936-12-15|Research Corp|Shaft seal for high vacuum chambers|
    US3489034A|1968-05-17|1970-01-13|Gen Electric|Evacuated gear casing|
    US3800913A|1972-08-04|1974-04-02|Caterpillar Tractor Co|Recirculating oil system|
    DE2256681B2|1972-11-18|1976-05-26|Demag Ag, 4100 Duisburg|GEARBOX FOR TURBO COMPRESSOR|
    JPS5653136B2|1976-07-28|1981-12-17|
    US4465030A|1983-08-15|1984-08-14|General Motors Corporation|Transmission having a vacuum ventilation control|
    DE3344953A1|1983-12-13|1985-06-20|Leybold-Heraeus GmbH, 5000 Köln|TWO-SHAFT VACUUM PUMP WITH GEARBOX EVACUATION|
    US4697553A|1986-08-11|1987-10-06|Lie Zong Z|Lubricating oil input system|
    US4762201A|1987-04-13|1988-08-09|General Motors Corporation|Dry sump scavenging system with independent head source|
    US4750456A|1987-07-31|1988-06-14|Ladrach Paul E|Automatic oil level maintenance system|
    US4821799A|1988-05-10|1989-04-18|Otis Engineering Corporation|Grease injection control system|
    US5101936A|1990-12-20|1992-04-07|Ford Motor Company|Vaccum operated dry sump system|
    CH688630A5|1994-11-14|1997-12-15|Maag Getriebe Ag|Gear transmission.|
    USRE38232E1|1998-11-02|2003-08-26|Motorvac Technologies, Inc.|Method and apparatus for servicing engine cooling systems|
    DE19860353C1|1998-12-28|2000-06-21|Renk Ag|transmission|
    US6457564B1|1999-12-07|2002-10-01|The Lubrizol Corporation|Combination lubrication system for an internal combustion engine and associated gear devices|
    FR2836709B1|2002-03-01|2004-09-24|Flender Graffenstaden|GEAR MECHANISM WITH A CONTROL DEVICE FOR THE CREATION OF A RAREFIED ATMOSPHERE|
    US8256575B2|2007-08-22|2012-09-04|General Electric Company|Methods and systems for sealing rotating machines|
    EP2491245B1|2009-10-23|2013-12-11|Vestas Wind Systems A/S|A lubrication system for a gear system of a wind turbine providing emergency lubrication|
    US9903364B2|2014-12-05|2018-02-27|Aktiebolaget Skf|Backup lubricant supply system|
    DE102015007551A1|2015-06-16|2016-12-22|Renk Aktiengesellschaft|Transmission for a drive arrangement of a work machine and drive arrangement of a work machine|DE102015007551A1|2015-06-16|2016-12-22|Renk Aktiengesellschaft|Transmission for a drive arrangement of a work machine and drive arrangement of a work machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015004991.7A|DE102015004991B3|2015-04-18|2015-04-18|transmission|
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