Assembly for a drive, drive and oil drip tray for the assembly or the drive

Abstract

Assembly (30) for a drive (1) with at least one planet carrier (7), with a first planetary gear set, wherein the first planetary gear set has a plurality of first planetary gears (10), wherein the first planetary gears (10) are arranged rotatably on a first planetary hollow pin (12) in a first pitch circle diameter (D1) on the planet carrier (7), with an oil collecting tray (22) for collecting and forwarding oil, wherein the oil collecting tray (22) is arranged on the planet carrier (7), with a second planetary gear set, wherein the second planetary gear set has a plurality of second planetary gears (11), wherein the second planetary gears (11) are arranged rotatably on a second planetary hollow pin (13) in a second pitch circle diameter (D2) on the planet carrier (7), with a third planetary gear set, wherein the third planetary gear set has a plurality of third planetary gears (15), wherein the third planetary gears (15) are arranged rotatably on the planetary carrier (7) on a third planetary hollow pin (16) in a third pitch circle diameter (D3), wherein the oil collecting tray (22) has at least first members (25) for forwarding the oil to the first planetary gears (10) and second members (26) for forwarding the oil to the second planetary gears (11), wherein the assembly comprises third members (27) for forwarding the oil to the third planetary gears (15), wherein the oil collecting tray (22) comprises the third members, characterized in that the first, second and third members (25, 26, 27) are designed as tubular sections which are inserted at least in sections into the planetary hollow bolts (12, 13, 16).

Description

[0001] The invention relates to an assembly for a drive having the features of the preamble of claim 1. Furthermore, the invention relates to a drive for a vehicle having this assembly and to an oil drip tray for the assembly or the drive.

[0002] Vehicle transmissions are typically designed to be compact, allowing for easy integration into the vehicle. This compact design also means that auxiliary equipment, such as coolant or lubricant systems, does not need to be installed over long distances, but rather operates centrally on the compact transmission.

[0003] EP 2 821 672 A1 discloses a transmission assembly with three planetary gear sets arranged on a common carrier. The gears of the planetary gear sets are supplied with transmission oil via an oil sump.

[0004] The publication DE 10 2011 007 800 A1 discloses a compact functional assembly for an electric drive. The functional assembly comprises, on the one hand, a compact planetary drive and, on the other hand, an oil collecting tray that supplies the planetary drive with lubricating oil.

[0005] Document DE 11 2014 002 891 T5 discloses a transmission device with a planetary gear mechanism comprising a planetary carrier and inner and outer pinion gears, each of which is mounted on a pinion axle. The pinion axles are mounted in the planetary carrier and are provided with an oil passage inside the axle. An oil intake unit of the planetary gear mechanism provides oil for lubricating and cooling the inner and outer pinion gears, which is supplied to them through the oil passages.

[0006] The publications JP H09-004 700 A, KR 10 2009 0 110 990 A and DE 10 2012 217 307 A1 also describe planetary gears with first and second planetary gears and with an oil collecting tray which supplies oil to the first and second planetary gears via supply lines.

[0007] The publication JP H08-270 767 A, which arguably represents the closest prior art, describes a planetary gear train with first, second, and third planetary gear sets. The first and second gear sets are supplied with oil via supply lines of a first oil pan, and the third gear sets are supplied with oil via supply lines of a second oil pan.

[0008] The object of the present invention is to design a module for a drive as a compact functional module. This object is achieved by a module having the features of claim 1, by a drive for a vehicle having the features of claim 4, and by an oil drip tray having the features of claim 9. Preferred or advantageous embodiments of the invention emerge from the subclaims, the following description, and the accompanying figures.

[0009] The subject matter of the invention is an assembly which is suitable and / or designed for a drive. The assembly is designed in particular as a functional assembly. Particularly preferably, the assembly is implemented as a self-holding assembly. In a general embodiment of the invention, the drive can be designed in any desired manner; particularly preferably, it is implemented as an electric drive. In particular, the drive is implemented as the drive according to claim 5. Alternatively, the assembly can be implemented as a Ravigneaux set. The assembly is designed in particular for integration into a vehicle. The vehicle is preferably a passenger car, truck, bus, or the like.

[0010] The assembly includes a planetary carrier and a first planetary gear set. The first planetary gear set includes a plurality of first planetary gears. The first gears are rotatably arranged on the planetary carrier within a first pitch circle diameter.

[0011] Planetary gears are understood, in particular, to be spur planetary gears that are toothed on the front side, particularly on the outside, around their own axis of rotation. The toothing can be, for example, spur or helical gearing or other toothing. Preferably, some or all of the subsequent planetary gears are also implemented in the aforementioned variations.

[0012] The planetary carrier defines a main axis of rotation. The first planetary gears, in particular the rotational axes of the planetary gears, are arranged on the planetary carrier within the first pitch circle diameter, preferably within a common first pitch circle diameter. Furthermore, the assembly includes an oil tray for collecting and conveying oil. The oil tray is arranged on the planetary carrier, in particular in a rotationally fixed manner.

[0013] The assembly thus forms a functional unit that, on the one hand, has a transmission function through the planetary carrier and the first planetary gear set, as well as a lubrication function through the oil pan. Because the oil pan is located on the planetary carrier and rotates with it, the assembly is very compact.

[0014] Within the scope of the invention, it is proposed that the assembly comprise a second planetary gear set with a plurality of second planetary gears. The second planetary gear set is rotatably arranged on the planetary carrier within a second pitch circle diameter. One embodiment of the invention provides for the first and second planetary gears to mesh with each other in pairs. Thus, a first planetary gear meshes with a second planetary gear.

[0015] According to a further embodiment of the invention, the assembly comprises a third planetary gear set, wherein the third planetary gear set comprises a plurality of third planetary gears. The third planetary gears are rotatably arranged on the planetary carrier within a third pitch circle diameter.

[0016] It can be provided that the first, second, and / or third pitch circle diameters are identical. However, it is preferred that the first, second, and third pitch circle diameters are different, so that each planetary gear set is arranged on a different pitch circle diameter.

[0017] According to the invention, the oil collecting tray has at least first elements for forwarding the oil to the first planetary gears and second elements or more elements for forwarding the oil to the second planetary gears. According to the invention, the oil collecting tray has third elements for forwarding the oil to the third planetary gears. Preferably, the oil is selectively forwarded to the respective planetary gears by the elements. Particularly preferably, each first element is assigned exactly one first planetary gear of the first planetary set. Alternatively or additionally, each second element is assigned a second planetary gear of the second planetary set. Additionally, each third element is assigned a third planetary gear of the third planetary set.

[0018] The assembly creates a functional assembly that can, on the one hand, perform a complex transmission task and, on the other hand, implements a simple lubrication device using only one oil collecting tray instead of several oil collecting trays, which supplies the planetary gears of the two, three or more planetary sets with oil in parallel.

[0019] Particularly preferably, the oil drip tray is located on one axial side, viewed in the axial direction relative to the main axis, and the three planetary gear sets are located adjacent to each other on another axial side. It is also possible for one of the planetary gear sets, for example, the third planetary gear set, to be arranged opposite one another. In this case, the planetary gears of the third planetary gear set are arranged on another planetary carrier, which rotates synchronously with the other planetary carrier.

[0020] In one implementation of the invention, the first planetary gears are rotatably arranged on first planetary hollow pins, wherein the first members are designed as tubular sections that are fluidically connected to the first planetary hollow pins. Additionally, the second planetary gears are rotatably arranged on second planetary hollow pins, wherein the second members are designed as tubular sections that are fluidically connected to the second planetary hollow pins. Furthermore, the third planetary gears are rotatably arranged on third planetary hollow pins, wherein the third members are designed as tubular sections that are fluidically connected to the third planetary hollow pins. According to the invention, the tubular sections are inserted into the planetary hollow pins at least in sections.

[0021] At least one, some, or all of the hollow planetary pins have a longitudinal bore aligned parallel to the main axis, in particular a through-hole, through-hole closed on one side, or a blind hole, into which the tube sections are inserted at least partially. Preferably, the hollow planetary pins each have at least one transverse bore, which preferably lies in a radial plane to the main axis and which is fluidically connected to the longitudinal bore. The transverse bores carry the oil from the longitudinal bore to the planetary gears or their bearings. Longitudinal and / or transverse bores can be drilled or incorporated into the hollow planetary pins in other ways during production.

[0022] The planetary gears can be mounted on the planetary hollow pins with plain bearings or with rolling element bearings.

[0023] In a preferred embodiment of the invention, the oil collecting tray has a circumferential oil collecting groove. The oil collecting groove is preferably closed and / or uninterrupted radially outwardly, so that oil that is forced radially outward toward the main axis due to centrifugal force is collected by the oil collecting groove. The oil collecting groove is fluidly connected to the components, in particular the pipe sections, such that upon rotation of the planet carrier and thus the oil collecting groove, the oil is guided via the oil collecting groove to the components or pipe sections and subsequently via the planetary hollow pins to the planet gears. For this purpose, flow openings are formed near or in the oil collecting groove, which lead into the flow channels of the components.Nearby means that the openings are formed in the region of the oil pan that is radially formed between the oil source and the oil collecting channel, and in which the oil flows radially outward toward the oil collecting channel. Alternatively, and preferably, the flow openings are located in a damming region in which the oil trapped by the oil pan is dammed.

[0024] The oil collecting trough can be circular in axial plan view. However, it preferably has a shape formed by the distribution of the elements. The elements preferably each form support points along the circumference of the oil collecting trough, with the intermediate sections between the support points and / or the elements each having an inwardly directed curvature and / or being concave. The special design of the intermediate sections has the advantage that trapped oil flows off the intermediate sections in the circumference direction due to centrifugal force and is guided to the elements, in particular to the pipe sections.

[0025] In a preferred embodiment of the invention, the oil collecting tray has a plurality of fastening elements designed for attachment to the planetary carrier. The fastening elements are particularly preferably designed as locking pins, which can, for example, be easily snapped into corresponding receiving holes in the planetary carrier. Optionally, the planetary carrier forms a rear wall for the oil collecting channel, or the oil collecting tray provides the rear wall, so that the oil collecting channel has a U-shape in a longitudinal section.

[0026] Another subject of the invention relates to a drive for a vehicle, in particular an electric drive for a vehicle. Particularly preferably, the drive is designed as a so-called electric axle and / or arranged between two driven wheels of the vehicle, with the drive driving the two driven wheels.

[0027] The drive comprises an electric motor designed as a traction motor for the vehicle. The drive comprises a planetary gear for transmitting the drive torque of the electric motor, in particular to the driven wheels. The transmission can, in particular, involve a conversion, in particular a transmission or reduction, of the drive torque and / or a torque split. According to the invention, the planetary gear comprises the assembly as described above or according to one of the preceding claims.

[0028] In particular, the planetary gear set has a transmission section for translating an input speed of the electric motor into an output speed. Preferably, a high input speed is translated into a lower output speed. Furthermore, the planetary gear set has a differential section for distributing the drive torque, in particular the translated drive torque, to two outputs of the drive. Provision is made for the differential section to comprise the first and second planetary gear sets, and for the transmission section to comprise the third planetary gear set. Thus, a differential function is assigned to the first and second planetary gear sets, and a transmission function is assigned to the third planetary gear set.

[0029] In an advantageous development of the invention, the differential section additionally has two differential sun gears, with the differential sun gears forming the two outputs. The planet carrier forms an input to the differential section. Thus, the differential section distributes the drive torque introduced via the planet carrier to the two outputs.

[0030] In an advantageous development of the invention, the transmission section comprises a stationary transmission ring gear and a transmission sun gear. The third planetary gears mesh with the transmission ring gear and simultaneously with the transmission sun gear.

[0031] In a first alternative of the invention, the transmission sun gear forms an input to the transmission section. Preferably, the transmission sun gear is driven at the speed of the electric motor, in particular a rotor shaft of the electric motor.

[0032] In a further development of the invention, the transmission section further comprises an input sun gear, an input planetary carrier, and a set of input planetary gears. The input planetary gears are rotatably arranged on the input planetary carrier. The input planetary gears are also designed as spur gears. The transmission section further has an input ring gear, wherein the input ring gear is rotationally fixedly connected to the planetary carrier, which carries the three planetary sets. The input sun gear forms an input to the transmission section, wherein a rotational speed of the electric motor is preferably applied to the input sun gear as the input rotational speed. The input planetary gears mesh with the input sun gear and the input ring gear. The input ring gear is rotationally fixedly connected to the planetary carrier, and the input planetary carrier is rotationally fixedly connected to the transmission sun gear.This creates a two-stage planetary gear ratio, which enables a higher ratio for the input torque.

[0033] A further subject matter of the invention is an oil drip tray which is designed for an assembly according to one of the preceding claims or as previously described and / or for a drive according to one of the preceding claims or as previously described. The oil drip tray is preferably designed as a preferably one-piece plastic component. The oil drip tray has the first elements in a first pitch circle diameter for forwarding the oil to first planet gears, the second elements in a second pitch circle diameter for forwarding the oil to second planet gears and also the third elements in a third pitch circle diameter for forwarding the oil to third planet gears. The oil drip tray is preferably designed as previously described.

[0034] Further features, advantages, and effects of the invention will become apparent from the following description of a preferred embodiment of the invention and the accompanying figures. These show: Fig. 1 is a schematic longitudinal sectional view of a drive for a vehicle as an embodiment of the invention; Fig. 2 the drive in the Fig. 1 in a schematic axial plan view; Fig. 3a, b, c an axial plan view, a sectional view and an axial plan view from the front of an oil collecting tray for the drive of the preceding figures; Fig. 4 shows a further embodiment of the drive as a further embodiment of the invention.

[0035] The Fig. 1 shows a schematic longitudinal section along a main rotational axis H of a drive 1 designed for a vehicle. The drive 1 is designed as an electric drive and has an electric motor 2 (shown only schematically), which serves to generate a traction torque for the vehicle. Particularly preferably, the drive 1 is designed as an electric axle. The drive 1 has a planetary gear 3, which transmits a drive torque from the electric motor 2, translates it, and distributes it to two outputs 4a, b. The outputs 4a, b are each connectable or connected to a wheel of the vehicle in order to drive them.

[0036] The planetary gear 3 can be roughly divided into a transmission section 5 and a differential section 6. In the transmission section 5, the drive torque of the electric motor 2 is converted from a high input speed to a low output speed. In the differential section 6, the converted output torque is distributed between the two outputs 4a, b.

[0037] The differential section 6 has a planetary carrier 7, which is mounted via bearing devices 8, for example, relative to a housing or another stationary part of the vehicle. The planetary carrier 7 has a first side plate 9a and a second side plate 9b, with various transmission components arranged between the side plates 9a, b. The side plates 9a, b are formed as formed sheet metal parts.

[0038] As can be seen in particular from the Fig. 2 or from the Fig. 1, the differential section 6 has a set of first planetary gears 10 and a set of second planetary gears 11, which are rotatably arranged on the planetary carrier 7. Thus, the planetary carrier 7 comprises first hollow planetary pins 12 and second hollow planetary pins 13, with a first planetary gear 10 being mounted on the first hollow planetary pin 12 and a second planetary gear 11 being mounted on each of the second hollow planetary pins 13. In this embodiment, the mounting is achieved by a plain bearing. The hollow planetary pins 12, 13 can connect the first and second side plates 9a, b in the axial direction, so that the planetary carrier 7 is very stable.

[0039] Furthermore, the differential section 6 has two sun gears 14a, 14b, each of which forms one of the outputs 4a, b. The first sun gear 14a meshes with the first planet gears 10, and the second sun gear 14b meshes with the second planet gears 11. Additionally, the first and second planet gears 10, 11 mesh with each other in pairs, so that a first planet gear 10 meshes with a second planet gear 11.

[0040] From a functional point of view, the planet carrier 7 forms an input into the differential section 6, wherein a torque applied to the planet carrier 7 is distributed to the two sun gears 14a, b as outputs 4a, b.

[0041] The transmission section 5 has a set of third planetary gears 15, which are rotatably mounted on the same planetary carrier 7. The third planetary gears 15 are mounted via third planetary hollow pins 16 in or on the planetary carrier 7 via rolling element devices 17. The third planetary hollow pins 16 connect the side discs 9a, b.

[0042] Furthermore, the transmission section 5 has a stationary transmission ring gear 18 and a transmission sun gear 19, wherein the third planetary gears 15 mesh with the transmission ring gear 18 and with the transmission sun gear 19. In the Fig. 1, the transmission sun gear 19 forms an input into the transmission section 5 and is connected to the electric motor 2 by means of a transmission. In particular, in the embodiment shown in Fig. 1, the transmission sun gear 19 is operated at the same input speed as the output speed of the electric motor 2. The transmission sun gear 19 is mounted opposite the planet carrier 7.

[0043] During operation, the drive torque is introduced by the electric motor 2 via the transmission sun gear 19, translated by the transmission section 5 and passed on to the planet carrier 7, where the translated drive torque is distributed to the outputs 4a, b.

[0044] The planetary hollow pins 12, 13, and 16 each have a longitudinal bore 20 that forms a through-hole or blind hole in the axial direction. Transverse bores 21 branch off from the longitudinal bores 20, with the longitudinal bores 20 and the transverse bores 21 together forming an oil supply for the bearings of the planetary gears 10, 11, and 15 on the planetary hollow pins 12, 13, and 16, respectively.

[0045] An oil collecting tray 22 is placed on the planet carrier 7, whereby the oil collecting tray 22 is inserted into the Fig. 3a, b, c is shown as a single part.

[0046] The Fig. 3a shows the oil collecting tray in axial plan view from the planet carrier 7, the Fig. 3b shows the oil collecting tray 22 in a section according to the section plane AA, the Fig. 3c shows the oil collecting tray 22 in axial plan view, in which Fig. 1 from the right side.

[0047] The oil collecting tray 22 is formed as a plastic component, in particular a plastic injection-molded part, and in this exemplary embodiment is formed as a single piece. The oil collecting tray 22 has a central opening 23 which is aligned coaxially with the main axis H. In the circumferential direction, the oil collecting tray 22 is closed and has a circumferentially closed oil collecting channel 24 which - as can be seen from the sectional view in the Fig. 3b below - in the longitudinal section it is U-shaped and open radially inwards towards the main axis of rotation H.

[0048] The function of the oil collecting channel 24 is to collect, at least in sections, oil which is forced radially outwards from the main axis of rotation H due to a centrifugal force.

[0049] The oil collecting tray 22 has first elements 25, second elements 26 and third elements 27. The elements 25, 26, 27, as well as the planetary hollow pins 12, 13, 16, are arranged on three different pitch circle diameters D1, D2, D3. They are - as is particularly evident from the Fig. 3b - formed as tubular sections, with one open end of the tubular sections being fluidically connected to the oil collecting channel 24 and the other open end being fluidically connected to the respective planetary hollow pin 12, 13, 16. Thus, the hollow section of the first members 25 protrudes into the longitudinal bore 20 of the first planetary hollow pin 12, the tubular section of the second members 26 protrudes into the longitudinal bore of the second planetary hollow pin 13, and the tubular section of the third members 27 protrudes into the longitudinal bore of the third planetary hollow pin 16.

[0050] From a functional perspective, the oil is channeled from the oil collecting channel 24 into the planetary hollow pins 12, 13, 16 via the elements 25, 26, 27. Furthermore, the elements 25, 26, 27 form positive-locking elements for securing the oil collecting tray 22 in the direction of rotation. Specifically, the elements 25, 26, 27 are inserted into the respective planetary hollow pins 12, 13, 16.

[0051] Additionally, the oil drip tray 22 has fastening elements 28, by means of which the oil drip tray 22 can be positively locked into the planetary carrier 7. This ensures that the oil drip tray 22 is held captively on the planetary carrier 7.

[0052] In contrast to the inner circumference, the outer circumference of the oil collecting tray 22 is not circular, but is formed by a plurality of intermediate sections 29, each connecting two elements 25-26, 26-27, 27-25. The intermediate sections 29 are convexly curved inward, so that oil trapped in the oil collecting channel 24 is forced by centrifugal force toward the elements 25, 26, 27 arranged in the corner regions of the oil collecting channel 24. The oil collecting tray 22 has a rear wall pierced by the opening 23, so that the oil collecting channel 24 is completely formed in the U-shape.

[0053] Returning to the Fig. 1 it can be seen that the planet carrier 7 with the first, second and third planetary gear sets with first, second and third planetary gears 10, 11, 15 and the oil collecting tray 22 forms an assembly 30, wherein the assembly 30 is designed as a functional assembly in the drive 1 or in the planetary gear 3 and, in addition to converting the drive torque from the electric motor 2, also implements a lubricating function through the oil collecting tray 22.

[0054] In the Fig. 4 shows a further embodiment of the drive 1, wherein the transmission section 5 is designed differently. The remaining area of ​​the drive 1 is as in the Fig. 2 and Fig. 3, so that reference is made to the previous description. The transmission section 5 has an input sun gear 31, which is coupled to the electric motor 2 in terms of transmission technology; in particular, the speeds of the input sun gear 31 and the electric motor 2 are the same. Furthermore, the transmission section 5 has an input planetary carrier 32, which carries a set of input planetary gears 33. The transmission section 5 further has an input ring gear 34, wherein the input ring gear 34 is connected in a rotationally fixed manner to the planetary carrier 7. The input planetary gears 33 mesh, on the one hand, with the input sun gear 31, and, on the other hand, with the input ring gear 34. The input planetary carrier 32 is connected in a rotationally fixed manner to the transmission sun gear 19. Thus, the input torque is introduced both via the transmission sun gear 19 and via the planetary carrier 7, in contrast to the exemplary embodiment in the Fig. 1 and Fig.2. However, the structure of assembly 30 is the same. List of reference symbols 1 drive 2 electric motor 3 planetary gears 4a, b exits 5 Translation section 6 Differential section 7 planet carriers 8 Storage facility 9a, b side windows 10 first planetary gears 11 second planet gears 12 first planetary hollow bolt 13 second planetary hollow bolt 14a, b sun gears 15 third planetary gears 16 third planetary hollow bolt 17 rolling element devices 18 Transmission ring gear 19 Transmission sun gear 20 longitudinal holes 21 cross holes 22 Oil drip tray 23 Opening 24 Oil trough 25 first organs 26 second organs 27 third organs 28 fastening organs 29 Intermediate section 30 assembly 31 Input sun gear 32 input planetary carrier 33 input planetary gears 34 Input ring gear H Main axis of rotation AA cutting plane D1, D2, D3 pitch circle diameter

Claims

[1] Assembly (30) for a drive (1) with at least one planet carrier (7), with a first planetary gear set, wherein the first planetary gear set has a plurality of first planetary gears (10), wherein the first planetary gears (10) are arranged rotatably on a first planetary hollow pin (12) in a first pitch circle diameter (D1) on the planet carrier (7), with an oil collecting tray (22) for collecting and forwarding oil, wherein the oil collecting tray (22) is arranged on the planet carrier (7), with a second planetary gear set, wherein the second planetary gear set has a plurality of second planetary gears (11), wherein the second planetary gears (11) are arranged rotatably on a second planetary hollow pin (13) in a second pitch circle diameter (D2) on the planet carrier (7), with a third planetary gear set, wherein the third planetary gear set has a plurality of third planetary gears (15), wherein the third planetary gears (15) are arranged rotatably on the planetary carrier (7) on a third planetary hollow pin (16) in a third pitch circle diameter (D3), wherein the oil collecting tray (22) has at least first members (25) for forwarding the oil to the first planetary gears (10) and second members (26) for forwarding the oil to the second planetary gears (11), wherein the assembly comprises third members (27) for forwarding the oil to the third planetary gears (15), wherein the oil collecting tray (22) comprises the third members, characterized by , that the first, second and third members (25, 26, 27) are designed as tubular sections which are inserted at least in sections into the planetary hollow bolts (12, 13, 16). [2] Assembly (30) according to claim 1, characterized bythat the first and second planet gears (10,11) mesh with each other in pairs. [3] Assembly (30) according to one of the preceding claims, characterized by that the oil collecting tray (22) has a plurality of fastening elements (28) for fastening to at least one planet carrier (7). [4] Drive (1) for a vehicle with an electric motor (2) and with a planetary gear (3) for transmitting the drive torque of the electric motor (2), wherein the planetary gear (3) has the assembly (30) according to claim 1. [5] Drive (1) according to claim 4, characterized bythat the planetary gear (3) has a transmission section (5) for translating an input speed of the electric motor (2) into an output speed and a differential section (6) for distributing the drive torque to two outputs (4a, b) of the drive (1), wherein the differential section (6) has the first and the second planetary gear set and wherein the transmission section (5) has a third planetary gear set. [6] Drive (1) according to claim 5, characterized by that the differential section (6) has two sun gears (14a, 14b), wherein the planet carrier (7) forms an input into the differential section (6) and the two sun gears (14a, 14b) each form an output (4a, 4b) from the differential section (6). [7] Drive (1) according to claim 5, characterized bythat the transmission section (5) has a stationary transmission ring gear (18) and a transmission sun gear (19), wherein the third planetary gears (15) mesh with the transmission ring gear (18) and the transmission sun gear (19). [8] Drive (1) according to one of claims 5 or 6, characterized by in that the transmission section (5) has an input sun gear (31), an input planetary carrier (32) and a set of input planetary gears (33), the input planetary gears (33) being rotatably arranged on the input planetary carrier (32), as well as an input ring gear (34), the input sun gear (31) forming an input into the transmission section (5), the input planetary gears (33) meshing with the input sun gear (31) and the input ring gear (34), the input ring gear (34) being non-rotatably connected to the planetary carrier (7) and the input planetary carrier (32) being non-rotatably connected to the transmission sun gear (19). [9] Oil collecting tray (22) for an assembly according to one of claims 1, 2 or 3, wherein the oil collecting tray (22) comprises first members (25) in a first pitch circle diameter (D1) for forwarding the oil to first planetary gears (10), second members (26) in a second pitch circle diameter (D2) for forwarding the oil to second planetary gears (11) and third members (27) in a third pitch circle diameter (D3) for forwarding the oil to third planetary gears (15), characterized by that the first, second and third members (25, 26, 27) are designed as tubular sections which can be inserted at least in sections into the planetary hollow bolts (12, 13, 16) of the assembly. [10] Oil collecting tray according to claim 9, characterized by that the oil collecting tray (22) has a circumferential oil collecting groove (24) and flow openings leading to the elements (25, 26, 27) at least in the vicinity, on the edge or in the oil collecting groove.

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