EP4264087A1 - Vorrichtung zum befördern eines schmieröls einer mechanischen drehmomentübertragungseinrichtung und traktionsgetriebe für schienenfahrzeuge - Google Patents
Vorrichtung zum befördern eines schmieröls einer mechanischen drehmomentübertragungseinrichtung und traktionsgetriebe für schienenfahrzeugeInfo
- Publication number
- EP4264087A1 EP4264087A1 EP21840032.3A EP21840032A EP4264087A1 EP 4264087 A1 EP4264087 A1 EP 4264087A1 EP 21840032 A EP21840032 A EP 21840032A EP 4264087 A1 EP4264087 A1 EP 4264087A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- conveying element
- conveying
- lubricating oil
- traction
- 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.)
- Pending
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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
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- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0457—Splash lubrication
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- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0493—Gearings with spur or bevel gears
- F16H57/0494—Gearings with spur or bevel gears with variable gear ratio or for reversing rotary motion
Definitions
- the present invention relates to a device for conveying a lubricating oil of a mechanical torque transmission device for rail vehicles, in particular a corresponding traction drive, and a traction drive for rail vehicles.
- Gears can be lubricated with lubricants such as gear greases and/or lubricating oils, in particular special gear lubricating oils.
- the lubricating oil serves in particular to lubricate meshing teeth of gears and to transport heat within the gear.
- cold welding of the contact surfaces can be prevented by adequately wetting the contact surfaces of the gear wheel pairs in the transmission.
- the supply of lubricant via so-called splashing losses can also contribute to an increase in temperature.
- roller bearings also have to be supplied with lubricants.
- lubrication In general, three different types of lubrication are distinguished in transmissions, splash lubrication, injection lubrication and mist lubrication.
- splash lubrication In comparison to injection lubrication and mist lubrication, splash lubrication is characterized by a relatively simple structure, since no additional machine elements, aggregates, measuring and control devices, etc. are required for this. It is therefore relatively inexpensive and is mainly used in traction drives in rail vehicles.
- splash-lubricated gears one or more gears are in a (respective or common) oil sump and transport lubricating oil when combing through, which ultimately leads to the Contact surfaces reached.
- the quantity and flow of oil, as well as the immersion depth of the gears, can vary depending on the application and other boundary conditions (including installation space).
- One object of the present invention is to provide a lubricating device for torque transmission devices of rail vehicles, with which the lubricating oil for the desired application/boundary conditions can be distributed efficiently (i.e. effectively and with comparatively little effort) and losses, in particular splashing losses, can be reduced as far as possible can be largely avoided.
- a device for conveying a lubricating oil of a mechanical torque transmission device for rail vehicles which has an input shaft and an output shaft and is typically designed as a traction transmission, i.e. as a transmission of a drive train of the rail vehicle, has a reservoir for the lubricating oil, and a partially im Reservoir arranged conveying element for the lubricating oil.
- the conveying element is connected in a rotationally fixed manner to the input shaft, the output shaft and/or another shaft configured for torque transmission between the input shaft and the output shaft, but is not in engagement with any other element of the torque transmission device.
- this device also referred to below as an oiling device, for conveying a lubricating oil for lubricating the torque transmission device
- the splashing losses in particular from multi-stage, splash-lubricated traction drives, can be reduced in a simple manner and without compromising the above-mentioned operating conditions for the traction drives, especially when the Space are at least significantly reduced.
- no or only one gear e.g. a spur gear and/or a large gear of the torque transmission device
- the reservoir which is typically designed as an oil sump, typically with a defined/predetermined immersion depth.
- the churning losses in gear drives depend on the immersion depth, lubricant viscosity, toothing width, peripheral speed and the number of immersing gears.
- Reliable gear wheel lubrication can thus also be ensured when, for reasons of space, two (or more) separate oil sump areas cannot be implemented, not with a respective additional oil collecting device or only with great effort, and even when (at least) two separate oil sump areas are present are, however, no sufficient immersion depth can be guaranteed for all operating conditions that occur.
- the promotion of the lubricating oil in a further reservoir for the lubricating oil is made possible.
- the temperature (increase) of the lubricating oil can be reduced during operation and, as a result, the oil service life can be increased and the maintenance effort reduced.
- the transport element can typically be installed in a very space-saving manner, existing designs for torque transmission devices or gears can be adapted comparatively easily, if necessary even existing torque transmission devices or gears can be retrofitted/converted.
- the device for conveying the lubricating oil can also have several of the conveying elements described here, which can be designed the same or differently depending on the design, e.g. two conveying elements which are arranged in such a way that they are each in (can) immerse the lubricating oil of a common reservoir or two separate reservoirs.
- two conveying elements which are arranged in such a way that they are each in (can) immerse the lubricating oil of a common reservoir or two separate reservoirs.
- the conveying element does not engage with any other element of the torque transmission device or the traction drive means in particular that the conveying element is arranged and designed in such a way that it does not lead to a direct (mechanical) transmission of torque and/or power between the input shaft and of the output shaft can contribute and/or is not adapted to contribute significantly (i.e. more than 1%) to a torque transfer and/or power transfer between the input shaft and the output shaft.
- the torque transmission device or the traction drive of the rail vehicle are typically designed as gear drives.
- the fact that the conveying element does not engage with any other element of the torque transmission device or the traction drive means in particular that it can be mechanically rigidly connected to a gear of the gear drive, directly and/or indirectly, in particular via the shaft which is also rigidly or non-rotatably connected to the gear, but with no ring gear (or another gear) is in engagement.
- the conveying element is typically not designed as a gear wheel, ie it typically does not have a gear rim, in particular no mechanically sufficiently stable gear rim for transmitting correspondingly large forces/torques, such as occur in the operation of torque transmission devices, in particular traction drives of rail vehicles.
- the following description preferably refers to embodiments that are directed to traction drives for rail vehicles. They typically apply accordingly to other torque transmission devices for other types of vehicles, such as road vehicles, electrically powered bicycles, wind turbines, industrial gearboxes, etc.
- a traction drive for rail vehicles has a gear wheel for transmitting torque, a reservoir and a conveying element mechanically rigidly connected to the gear wheel for conveying a lubricating oil located in the reservoir.
- the reservoir and the mechanically rigidly connected to the gear conveying element can form at least part of a device for conveying the lubricating oil.
- the traction transmission typically has an input shaft and an output shaft, with the gear being rigidly connected to one of the input shaft and the output shaft.
- the traction drive can also have a further shaft which is set up for torque and/or force transmission between the input shaft and the output shaft and to which the gear wheel is rigidly connected.
- the associated gear is typically configured to contribute to torque transmission and/or power transmission between the input shaft and the output shaft and/or to contribute to the translation between an input speed of the input shaft and an output speed of the output shaft.
- the gear wheel is also partially arranged in the reservoir (possibly also a further reservoir), so that both the gear wheel and the conveying element, which is typically arranged coaxially and adjacent to it, can contribute to the splash lubrication of the components of the transmission.
- a (smallest) distance in the axial direction of the gear wheel or its shaft (axial distance) to the conveying element is significantly smaller than an expansion of the gear wheel and/or an expansion of the conveying element in the radial direction (respective radial expansion) is, for example, a maximum of 10%, 5% or even only 1% of the respective radial expansion.
- the (maximum) radial extent of the conveying element connected to the gear wheel is typically at most slightly larger, e.g. a maximum of 15%, 10% or even only 2% larger, essentially the same (+/- 1 %), or even smaller than the (maximum) radial extent of the gear.
- the conveying element in a plan view of the gear wheel or a projection onto a plane that is perpendicular to the axis of the gear wheel or its shaft, can be arranged at least essentially within an outer circle or even at least essentially within a root circle of the gear wheel be.
- the (maximum) axial extent of the conveying element connected to the gear is typically also at most slightly larger, for example a maximum of 15%, 10% or even only 2% larger, essentially the same (+/- 1%), or even smaller than the (maximum) radial extent of the gear.
- the conveying element is flat, ie its axial extent is typically significantly smaller, eg at most 20%, at most 10% or even at most 5% compared to its radial extent.
- the conveying element is essentially, i.e. apart from structures for receiving or transporting the lubricating oil, which can be provided in particular in a radial outer area of the conveying element, disk-shaped (flat and essentially cylindrical) or essentially annular disk-shaped, i.e. in the Substantially disk-shaped, but with an opening for the respective shaft that is typically arranged centrally in the radial direction.
- the conveying element typically has at least one receptacle, a recess and/or a channel for the lubricating oil.
- the channel can form a substantially tubular and/or elongated oil receptacle.
- the recording for the lubricating oil in the narrower sense is typically compact, in particular at least essentially pocket-shaped.
- the channel or the receptacle can be designed as a (respective) recess in a base body of the conveying element. This facilitates a compact structure.
- the main body of the conveying element can be radially symmetrical with respect to the axial direction, but not the conveying element.
- the conveying element can have multiple rotational symmetry with respect to the axial direction.
- the conveying element can have a plurality (at least two, typically a large number) of correspondingly arranged receptacles, recesses and/or channels, but also multiple spokes which have a (respective) receptacle, a recess and/or a channel for the lubricating oil , especially in the radial outer area.
- the conveying element can be designed as an oil delivery disc, for example be designed in the form of a paddle wheel at least in the radial edge region.
- the (respective) receptacle, recess and/or channel extend in a radial direction of the carriage to and/or are located at an outer edge of the carriage.
- the receptacle or recess is typically asymmetrical and/or deviating from the radial direction of the conveying element at the receptacle or recess direction oriented.
- the receptacle or the recess in the top view of the gear and/or in the projection onto the vertical plane can have an edge that is curved at least in sections, but also straight edges.
- the conveying element typically has a plurality of receptacles, recesses and/or channels for the lubricating oil.
- the receptacles, recesses or channels can be fluidically connected to one another at least in pairs in the conveying element, in particular via a respective connecting channel for exchanging or transporting the lubricating oil.
- the conveying element has differently designed, in particular differently shaped and/or oriented receptacles, recesses and/or channels for the lubricating oil.
- the conveying element can have two receptacles, recesses or channels which, in the top view of the gear wheel and/or in the projection onto the plane in one of the radial direction of the conveying element, are located on the receptacle, the recess and/or the channel and are oriented in different directions.
- the conveying element can be configured in such a way that a ratio of a conveying capacity of the conveying element for the lubricating oil when the conveying element rotates in a first direction of rotation at a given rotational speed of the conveying element to a conveying capacity of the conveying element for the lubricating oil when the conveying element rotates in a second direction of rotation opposite to the first direction of rotation at the given rotational speed of the conveying element is in a predetermined range, for example at least essentially the value one or another desired value corresponding to a given transmission specification/design (e.g. corresponding to different typical rotational speeds in the two directions of rotation).
- a guide device for the lubricating oil can be provided adjacent to the conveying element, in particular a correspondingly shaped guide plate.
- the guide device can be arranged adjacent to a further gear wheel, in particular adjacent to a further gear wheel arranged in a rotationally fixed manner with and/or coaxially with the gear wheel.
- the further gear wheel is typically arranged between the gear wheel and the guide device.
- the guide device covers the gearwheel and/or the further gearwheel in the plan view of the gearwheel and/or the projection onto the plane partially off. This also reliably prevents the lubricating oil from being distributed in undesirable directions.
- the lubricating oil can be conveyed in the axial, radial and tangential direction during operation through the typically pocket-shaped receptacles. This of course depends on the shape and orientation of the recordings/channels.
- the guide device is also partially arranged in the reservoir.
- a multi-stage traction drive can in particular also have two or more conveying elements which are each connected in a rotationally fixed manner or with a gear wheel, a respective gear wheel, one of the shafts and/or a respective shaft.
- the gear wheel is arranged in the axial direction between the two conveying elements, and/or an axial distance to at least one of the conveying elements is significantly smaller than an extent of the gear wheel and/or extent of the conveying elements in the radial direction.
- several guide devices can also be provided, e.g. one for each conveying element.
- a rail vehicle has one of the devices described herein for conveying a lubricating oil or a traction transmission described herein.
- the rail vehicle has a drive machine having an output shaft which is non-rotatably connected to the input shaft of the torque transmission device or an input shaft of the traction drive.
- the drive machine can in particular be an electric drive machine (asynchronous, synchronous or a permanently excited drive machine), which can typically also be used in generator mode (braking mode).
- a Cartesian coordinate system is shown in each of the figures, with the x-direction representing an axial direction of a shaft and/or a gear wheel and the y- and z-direction representing radial directions orthogonal to one another and to the axial direction represent.
- the z-direction typically represents a vertical direction and the x-direction and the y-direction represent a respective horizontal direction.
- FIG. 1A shows a schematic plan view of a mechanical torque transmission device for rail vehicles, typically designed as a traction drive and having a device for conveying a lubricating oil, according to an exemplary embodiment
- FIG. 1B shows a schematic side view of the mechanical torque transmission device illustrated in FIG. 1A according to an exemplary embodiment
- FIG. 1C shows a schematic plan view of a conveying element of the device for conveying the lubricating oil shown in FIG. 1A according to an exemplary embodiment
- FIG. 2A shows a schematic plan view of a mechanical torque transmission device for rail vehicles, typically designed as a traction drive and having a device for conveying a lubricating oil, according to an exemplary embodiment
- FIG. 2B shows a schematic plan view of a mechanical torque transmission device for rail vehicles, typically designed as a traction drive and having a device for conveying a lubricating oil, according to an exemplary embodiment
- FIG. 3A shows a perspective view of a mechanical torque transmission device for rail vehicles, typically designed as a traction drive, which has a device for conveying a lubricating oil, according to an exemplary embodiment
- FIG. 3B shows a perspective view of a guiding device for the lubricating oil of the device for conveying the lubricating oil shown in FIG. 3A according to an exemplary embodiment
- FIG. 3C shows a schematic plan view of the mechanical torque transmission device illustrated in FIG. 3A according to an exemplary embodiment
- FIG. 3D shows a schematic cross section of the mechanical torque transmission device illustrated in FIG. 3A according to an exemplary embodiment
- FIG. 4A shows a further perspective view of the mechanical torque transmission device illustrated in FIG. 3A according to an exemplary embodiment
- FIG. 4B shows a perspective view of a mechanical torque transmission device for rail vehicles, typically designed as a traction drive, which has a device for conveying a lubricating oil, according to an exemplary embodiment
- FIG. 5A shows an enlarged schematic top view of a conveying element designed as an oil conveying disk of a device for conveying a lubricating oil according to an exemplary embodiment
- FIG. 5B shows a schematic detailed view (from FIG. 5A) of a mechanical torque transmission device for rail vehicles, typically designed as a traction drive and having a device for conveying a lubricating oil, according to an exemplary embodiment;
- FIG. 5C shows a schematic plan view of another receptacle for the lubricating oil of the conveying element illustrated in FIG. 5A according to an exemplary embodiment
- FIG. 6A shows a schematic top view of a section of a conveying element designed as an oil conveying disk of a device for conveying a lubricating oil according to an exemplary embodiment
- FIG. 6B shows a schematic top view of a section of a conveying element designed as an oil conveying disk of a device for conveying a lubricating oil according to an exemplary embodiment
- FIG. 6C shows a schematic plan view of a section of a conveying element designed as an oil conveying disk of a device for conveying a lubricating oil according to an exemplary embodiment
- FIG. 6D shows a schematic top view of a section of a conveying element designed as an oil conveying disk of a device for conveying a lubricating oil according to an exemplary embodiment
- FIG. 7A shows a perspective view of a conveying element designed as an oil conveying disk of a device for conveying a lubricating oil according to an exemplary embodiment
- FIG. 7B shows a schematic top view of a receptacle for the lubricating oil of the conveying element shown in FIG. 5A according to an exemplary embodiment.
- exemplary embodiments
- Figure 1A shows a schematic plan view of a traction drive 100 for rail vehicles with an oiling device 151, 152 for the traction drive 100.
- gear wheel 121 is non-rotatably seated on a shaft 120 of traction drive 100, which shaft is oriented in the x-direction.
- the gear wheel 121 is largely supported by a transport element 152 (with an outer radius rm) of the oiling device 151, 152, which is designed as an example of an oil delivery disk and is essentially in the shape of a ring disk, for a reservoir 151, which is typically designed as an oil sump or oil pan Oiling device 151, 152 located lubricating oil, whose level is shown in Fig. 1A by the horizontal dash-dot line, covered.
- a transport element 152 (with an outer radius rm) of the oiling device 151, 152, which is designed as an example of an oil delivery disk and is essentially in the shape of a ring disk, for a reservoir 151, which is typically designed as an oil sump or oil pan Oiling device 151, 152 located lubricating oil, whose level is shown in Fig. 1A by the horizontal dash-dot line, covered.
- the gear 121 and the oil delivery disk 152 can be fixed for rotation with and coaxial with the shaft 120 .
- the oil feed disk 152 can be fastened directly to (on) the gear wheel 121 and/or the shaft 120.
- both the gear wheel 121 and the oil feed disk 152 can be immersed in the lubricating oil of the oil sump 151 and thus contribute to the lubrication of the gear mechanism 100, in particular of a further gear wheel, not shown, of the gear mechanism 100 which engages in the large gear wheel 121 and which is connected to a different, not shown shaft of the transmission is rotatably connected.
- another gear wheel 122 can be seated in a rotationally fixed manner on the shaft 120, typically with a smaller root circle defined by its inner radius nm than the root circle of the gear wheel 121.
- This gear wheel can be used in particular as a pinion (of a second Gear stage in one multi-stage gear) and, as will be explained further below with reference to FIG.
- the oil feed disk 152 is particularly well designed for lubricating the gear train 100 when the oil feed disk 152 is rotated counterclockwise rotated clockwise.
- the receptacles 2 of the conveying element 152 can be delimited on one side in the axial direction x (see also FIGS. 4A to 7B below). This can at least largely prevent the lubricating oil from being distributed in this direction, if this is desired. On the other hand, this embodiment particularly reliably ensures the typically desired high planarity (axially oriented surfaces, rear side and front side shown apart from the receptacles 2 in the radial edge area) and/or rigidity of the conveying element 152 also in the radial edge area.
- Figure 2A shows a schematic plan view of a two-stage traction drive 200 for a rail vehicle with three exemplary gears 211, 221, 231, which are non-rotatably seated on a respective shaft 210, 220, 230, namely on one that can be connected to an output shaft of a drive motor of the rail vehicle and connected input shaft 210 of the transmission 200, a middle shaft 220 of the transmission 200 and a (lower rotating) output shaft 230 of the transmission 200.
- the three gears 211, 221, 231 are represented by their respective outer circles, and the two meshing gear rims are represented by the hatched areas.
- the transmission 200 also has an oiling device, which is typically similar to the oiling device of the transmission 100 explained above with reference to FIGS. 1A-1C.
- the exemplary oil delivery disk 252 may dip into the reservoir 251 along with the gear 221 .
- the gears 221 and 222 and the oiling device 251, 252 can be arranged as shown in FIG. 1B.
- the lubrication of the gears 211, 222, 231 can be reliably guaranteed without the gears 211, 222, 231 immersing themselves in their own oil sump.
- the receptacles for the lubricating oil not shown, for example "pockets” or “shovels” of the oil conveyor disk, take part of the lubricating oil with them during operation and distribute them in the radial but also in the tangential direction as a result of the centrifugal force, so that this an additional wetting of the tooth flanks of the gears 211, 222, 231 takes place.
- FIG. 2B shows a schematic top view of a two-stage traction transmission 300, which is similar to the traction transmission 200 explained above with reference to FIG. 2A.
- the traction drive 300 also has three gears 311, 321, 331 arranged on parallel shafts 310, 320, 330.
- the traction drive 300 also has a guide device 360 for the lubricating oil, which in the selected view is the gears 321, 322, 331 and the oil delivery disk 352 is partially covered.
- the guide device 360 which is typically designed as a guide plate, also enables effective lubrication of the gear wheel (pinion) 321 during operation.
- the guide device 360 is typically also partially immersed in the lubricating oil located in the reservoir 351 .
- the guide device 360 can have an opening 361 in the lower area, which facilitates the replenishment of lubricating oil.
- FIGS. 3A to 4A show a traction drive 400, which is typically similar to the traction drive 300, in five different views.
- the oil feed disc 452 can have a plurality of essentially in the radial direction r oriented, elongated channels (or essentially channel-shaped receptacles) 3 for the lubricating oil, in the radial direction are open, but can also be open in the axial direction (on one side) (on the front side shown).
- the oil delivery disk 452 is arranged directly on the gear wheel 421 and the channels 3 extend in the radial direction into the area of the root circle of the gear wheel 421.
- a corresponding channel 3 is provided for every second tooth 1 of the ring gear of the gear wheel 421 .
- the tooth flanks of the teeth 1 can be supplied with lubricating oil via the channels 3 .
- lubricating oil is conveyed to the teeth of the gear wheel 422 by means of the guide device 460 during operation.
- a corresponding opening 461 is formed between the oil feed disk 452 and the guide device 460 in the assembled state, which is immersed in the lubricating oil.
- the oil feed disk 452 conveys the lubricating oil flowing through the opening 461 in operation in both directions of rotation about the shaft 420 to about the same extent, namely via the lower one shown in Figure 3B, which is essentially shaped like a shell section of a truncated cone Lower section 464 of the guide device 460 to the central section 463 of the guide device 460, which is essentially shaped like a cylinder jacket section and is delimited by a delimiting section 462, in which the lubricating oil can be absorbed by the teeth of the gear wheel 422, when the oil feed disc 452 receives lubricating oil in the reservoir above the outer section 465 of the guide device 460 in the area of the opening 461 and then releases it again in the radial direction (to the section 464 and from there to the section 463).
- the baffle 460 extends from the central axis or midpoint of the opening 461 in a clockwise direction to an angle ⁇ 46o that is greater than an angle ot.46o counterclockwise. Accordingly, at the same rotational speed of the gear wheel 421 or the oil feed disk 452, the delivery capacity of the lubricating oil to the gear wheel 422 in the clockwise direction is typically higher than in the counter-clockwise direction.
- the angle ot.46o is greater than the angle ß46o.
- the angles ot.46o and ß46o can also be of the same size.
- FIG. 4B shows a perspective partial view of a traction drive 500 for rail vehicles with an oiling device for the traction drive 500, which is typically similar to the traction drive 400 explained above with reference to FIGS. 3A to 4A.
- the oil feed disk 552 extends in the radial direction beyond the root circle of the gear wheel 521, for example up to approximately the outer circle of the gear wheel 521.
- This embodiment can be selected in particular when there is enough space in the axial direction x for a toothed ring of another gear wheel (not shown) engaging in the teeth 1 of the gear wheel 521 .
- FIG. 5A shows a schematic plan view of a conveying element 10 designed as an oil conveying disk, which conveying element 10 can be used in the devices for conveying a lubricating oil (oiling devices) explained above.
- the shown plan view of the annular disk-shaped oil delivery disk 10 is arranged coaxially on a shaft 120' and has a plurality of receptacles 2 for a lubricating oil in the radial outer area.
- the receptacles 2 are each oriented essentially in the radial direction r.
- the outer diameter 0da of the oil-feed disc 10 which can be in a range from 2 to 2.1 times the outer radius of the gear wheel to which the oil-feed disc is directly and/or indirectly connected
- the inner diameter (relative to of the receptacles/pockets 2) 0di which can be, for example, in a range from 1.8 times to 2 times the inner radius of the gear wheel to which the oil conveying disk is connected
- the pitch a of the receptacles which typically depends on the outer diameter Since, for example, it can be in a range from 1/10 to 1/36 (36°-10°),
- the width b of the opening of the receptacles 2 on the outer circumference which can be in a range from 10 mm to 30 mm, for example Opening angle ß of the receptacles 2, which can be in a range from 5° to 15°, for example, an axial depth t of the receptacles 2, which can be in a range from 3
- Figures 6A - 6D show a respective schematic top view of a section of oil conveyor disks 20, 30, 40, 50, which can be used in the devices for conveying a lubricating oil (oiling devices) explained above.
- a lubricating oil oil delivery disk 20-50
- its (possibly virtual) outer circle defined by the respective outer radius r a is also shown.
- the receptacles 2 can be designed asymmetrically, can point in different directions with respect to the respective radial direction r, and can even point in different directions (FIG. 6C).
- FIG. 6A While the openings of the receptacles 2 or receptacles 2 in FIG. 6A point in a direction which is rotated clockwise (CW) with respect to the respective radial direction r, the openings of the receptacles 2 or receptacles 2 in the figures 6B, 6D in a direction rotated counterclockwise (CCW) with respect to the respective radial direction r, and the openings of the receptacles 2 and the receptacles 2 in Fig. 6C (alternately) in a direction rotated with respect to the respective radial direction r in the clockwise (CW) and counterclockwise (CCW) directions, respectively.
- CW clockwise
- CCW counterclockwise
- two adjacent or non-adjacent receptacles 2 can be connected via a bypass designed as a connecting channel for throttling or deflecting the oil flow.
- FIG. 7A shows a perspective view of a conveying element 60 designed as an oil conveying disk, which can also be used in the devices for conveying a lubricating oil (oiling devices) explained above.
- the annular disk-shaped oil feed disk 60 is arranged coaxially on a shaft 120" of a transmission to be lubricated and has a plurality of receptacles 2, 2' for a lubricating oil in the radial outer area.
- the receptacles 2' can be closed laterally, i.e. closed in the respective radial direction r or at the outer radial edge.
- the laterally closed receptacles 2' can be provided with an opening B to the outside via a typically substantially axial bypass. Both the geometric shape of the openings B (circle, ellipse), the position, the opening size and the number of lateral axial openings B can be adjusted according to the requirements of the gear lubrication.
- the function of the axial bypass is again the throttling or deflection of the oil flow during operation in this embodiment.
- both laterally open receptacles 2 (T2) and laterally closed receptacles 2' (TI) can be present on an oil conveying disk.
- a traction drive for rail vehicles has a gear wheel, a reservoir and a transport element that is directly and/or indirectly rigidly connected to the gear wheel for transporting a lubricant located in the reservoir, in particular a gear lubricating oil.
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- General Details Of Gearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020134475.9A DE102020134475A1 (de) | 2020-12-21 | 2020-12-21 | Vorrichtung zum befördern eines schmieröls einer mechanischen drehmomentübertragungseinrichtung und traktionsgetriebe für schienenfahrzeuge |
PCT/EP2021/086831 WO2022136289A1 (de) | 2020-12-21 | 2021-12-20 | Vorrichtung zum befördern eines schmieröls einer mechanischen drehmomentübertragungseinrichtung und traktionsgetriebe für schienenfahrzeuge |
Publications (1)
Publication Number | Publication Date |
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EP4264087A1 true EP4264087A1 (de) | 2023-10-25 |
Family
ID=79288073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21840032.3A Pending EP4264087A1 (de) | 2020-12-21 | 2021-12-20 | Vorrichtung zum befördern eines schmieröls einer mechanischen drehmomentübertragungseinrichtung und traktionsgetriebe für schienenfahrzeuge |
Country Status (3)
Country | Link |
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EP (1) | EP4264087A1 (de) |
DE (1) | DE102020134475A1 (de) |
WO (1) | WO2022136289A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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DD267094A1 (de) | 1987-12-07 | 1989-04-19 | Penig Getriebewerk | Schmiereinrichtung fuer kegelrad-stirnradgetriebe, insbesondere fuer axialpendelrollenlager |
DE10308367A1 (de) | 2003-02-27 | 2004-12-02 | Daimlerchrysler Ag | Ölschleuderscheibe |
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DE202007017040U1 (de) * | 2007-08-31 | 2008-02-21 | GM Global Technology Operations, Inc., Detroit | Zahnrad und dieses verwendendes Getriebe |
JP5381236B2 (ja) | 2009-03-31 | 2014-01-08 | マツダ株式会社 | 手動変速機の潤滑構造 |
DE102011003250A1 (de) | 2011-01-27 | 2012-08-02 | Zf Friedrichshafen Ag | Getriebeanordnung für ein Schienenfahrzeug |
JP6135657B2 (ja) | 2014-12-22 | 2017-05-31 | マツダ株式会社 | 変速機の潤滑構造 |
US9718479B2 (en) * | 2015-08-31 | 2017-08-01 | Electro-Motive Diesel, Inc. | Traction motor with self-contained drive end bearing lubrication |
JP6658087B2 (ja) | 2016-02-26 | 2020-03-04 | トヨタ自動車株式会社 | 潤滑部材 |
CN208982624U (zh) | 2018-08-28 | 2019-06-14 | 宝鸡中车时代工程机械有限公司 | 轨道车辆齿轮传动装置 |
CN110030363A (zh) * | 2019-03-11 | 2019-07-19 | 舍弗勒技术股份两合公司 | 具有润滑功能的齿轮 |
CN210531580U (zh) | 2019-08-19 | 2020-05-15 | 南昌江铃集团协和传动技术有限公司 | 一种用于平行轴齿轮箱的薄片式甩油片 |
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2020
- 2020-12-21 DE DE102020134475.9A patent/DE102020134475A1/de active Pending
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2021
- 2021-12-20 EP EP21840032.3A patent/EP4264087A1/de active Pending
- 2021-12-20 WO PCT/EP2021/086831 patent/WO2022136289A1/de active Application Filing
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WO2022136289A1 (de) | 2022-06-30 |
DE102020134475A1 (de) | 2022-06-23 |
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