Device for transmitting torque
By designing a device including hub and shaft elements, using torsionally resistant connection and uniform force distribution design, the wear and failure of torque transmission equipment in the prior art is solved, and a long service life and high load-bearing capacity are achieved.
Patent Information
- Application Number
- CN202411737137.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-04
- Filing Date
- 2024-11-29
- Publication Date
- 2025-06-06
AI Technical Summary
The existing occupied teeth used to transmit torque have problems of uneven wear and local failure, resulting in short service life and insufficient load-bearing capacity.
A device including a hub element and a shaft element is designed, which realizes torque transmission through a torsionally-resistant connection, and the design of the hub engaging part and the shaft engaging part ensures a uniform force distribution in the axial direction.
Through this equipment, long service life and high load-bearing capacity are achieved, and torque transmission is more uniform and stable, reducing the risk of wear and failure.
Smart Images
Figure CN120100829A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a device for transmitting torque, a differential transmission having a device for transmitting torque, and a vehicle having a differential transmission. Background Art
[0002] Take-up toothings for transmitting torque are known. In take-up toothings, uneven wear and local failures of the take-up toothing profile may occur. Summary of the invention
[0003] The object of the present invention is to provide an improved device for transmitting torque, with which a long service life and a high load-bearing capacity are achieved.
[0004] The invention achieves this object with a device comprising the features of claim 1. Advantageous developments are subject matter of the dependent claims.
[0005] A device for transmitting torque includes a hub element and a shaft element. The hub element includes a hub engaging portion having a hub take-up profile, which can be engaged with a shaft engaging portion having a shaft take-up profile for transmitting torque. The hub engaging portion can include a hub take-up profile at the inner periphery. The shaft engaging portion can include a shaft take-up profile at the outer periphery. The hub element includes a hub connecting portion, which is arranged offset toward a connecting side in an axial direction relative to the hub engaging portion. The hub engaging portion of the hub element can be arranged to be offset in a radial direction relative to the hub connecting portion, for example, offset inwardly.
[0006] The shaft element comprises a shaft connection portion which is arranged offset in the axial direction toward the connection side relative to the shaft engagement portion. The shaft element can be connected to the hub element in a rotationally fixed manner via engagement of the shaft engagement portion with the hub engagement portion.
[0007] The torsion-proof connection of two elements is understood to mean a connection in which, for all expected states of the transmission, the two elements are rigidly coupled to each other so that they have approximately the same rotational speed. The elements can exist here as separate components connected to each other in a torsion-proof manner or else as a single piece. The torsion-proof connection may include a spline profile. The spline profile may be configured, for example, as a keyed shaft, a toothed shaft or a notched profile. An axial fixing device such as a fixing ring, a circlip or a spiral ring may be provided to limit relative movement in the axial direction. The torsion-proof connection may be configured as a press connection or as a screw connection by means of a flange of the element.
[0008] The hub element and the shaft element are rotatable about a common axis of rotation. The shaft occupation profile and the hub occupation profile may be configured to transmit torque. The torque may be transmitted by means of a circumferential force in a circumferential direction and a distance from the axis of rotation. The distance of the circumferential force from the axis of rotation may be formed by the diameter of the shaft occupation profile or the diameter of the hub occupation profile. The shaft occupation profile and the hub occupation profile may each be configured as a spline or polygonal profile. The shaft occupation profile and the hub occupation profile may each extend in an axial direction. The shaft occupation profile and the hub occupation profile may each extend in a spiral shape.
[0009] The connection sides of the shaft element and the hub element may be configured to receive or output torque. The hub connection may be configured to receive torque. For example, the hub connection may include a receptacle for a bolt. The hub element may be driven from outside the device. The shaft connection may be configured to output torque. The shaft connection may be configured to be connected to a wheel hub of a drive wheel of a vehicle.
[0010] The hub element may be hollow. The shaft element may be cylindrical. The shaft element may extend through the hub element. The shaft engagement portion may be arranged in the hub engagement portion in a radial direction. The shaft element may include a shaft engagement portion at one end in the axial direction on the engagement side. The hub connection portion may be connected to the hub engagement portion in a torsionally fixed manner. The torsion-resistant connection may be constructed for an advantageous introduction of forces. The torsion-resistant connection may be constructed so that an advantageous force distribution profile is established in the axial direction between the shaft occupation profile and the hub occupation profile.
[0011] In one embodiment, the hub element may be displaceable in an axial direction relative to the shaft element.
[0012] In one embodiment, the hub engagement portion and the shaft engagement portion can be configured for uniform force distribution in the axial direction between the hub occupation profile and the shaft occupation profile. The uniform force distribution can include a circumferential force of substantially constant cross-section in the axial direction between the hub occupation profile and the shaft occupation profile. The uniform force distribution can include a circumferential force in the axial direction between the hub occupation profile and the shaft occupation profile that is adapted to different load-bearing capacities of the hub occupation profile and the shaft occupation profile in certain areas.
[0013] In one embodiment, the hub element may comprise an offset portion which extends in an axial direction from the hub connection portion towards an engagement side opposite the connection side.The offset portion may be connected to a region of the hub engagement portion in a rotationally fixed manner.
[0014] The offset portion may be constructed as an integral piece with the connection portion of the hub element. The offset portion may be connected to the outer periphery of the hub engagement portion. The offset portion may extend in the axial direction. The offset portion may extend from the connection portion in the axial direction toward the engagement side. The offset portion may be hollow. The offset portion may be tubular. The offset portion may be cylindrical. The offset portion may include a radial portion at an end portion on the engagement side, which extends inwardly in the radial direction. The radial portion may be connected to the hub engagement portion in a torsionally fixed manner.
[0015] The offset portion may be arranged on the outside of the hub engaging portion in the radial direction. The offset portion may overlap with the hub engaging portion in the axial direction. The offset portion may extend in the axial direction in the region of the hub engaging portion. A release groove may be provided between the hub engaging portion and the offset portion. The release groove may be formed as a gap. The gap may be formed by the inner periphery of the offset portion. The gap may be formed by the outer periphery of the hub engaging portion. The gap may be annular. The gap may extend from the radial portion in the axial direction toward the connection side. The gap may be formed by cutting. The gap may be manufactured by means of corrosion. The gap may be forged. The transmission of force from the offset portion to the hub engaging portion in the region of the gap may be prevented via the gap. Thus, the force flow may be diverted.
[0016] The introduction of force into the hub joint can advantageously be formed via the connection position of the offset portion with the hub joint in the axial direction. The connection can be positioned at the end region of the hub joint on the joint side. The connection can be positioned in the central region of the hub joint in the axial direction. The connection can be positioned in the region between this central region of the hub joint and the end region on the joint side in the axial direction.
[0017] In one embodiment, the offset portion can be connected to an area of the hub engagement portion that is central in the axial direction. The central area can include the geometric center of the hub engagement portion in the axial direction. The central area can extend from the first third of the extension of the hub engagement portion in the axial direction to the second third of the extension of the hub engagement portion in the axial direction. As a result, the torque can be introduced close to the center or through the geometric center in the axial direction of the hub engagement element and the shaft engagement element. This is beneficial for the force flow through the shaft occupation profile and the hub occupation profile. As a result, the shaft occupation profile and the hub occupation profile can be loaded to a greater extent. The diameter of the shaft occupation profile and the hub occupation profile in the radial direction can be reduced. As a result, the diameter of the shaft element as a whole can be reduced.
[0018] In one embodiment, the offset portion can be connected to an end region of the hub joint that is arranged on the joint side in the axial direction. The end region can extend from a central region to the end of the hub joint on the joint side. The end region can extend within the last third of the extension of the hub joint in the axial direction on the joint side. As a result, the torque can be introduced into the region of the hub joint on the joint side close to the center in the axial direction of the hub joint element and the shaft joint element. This is advantageous for the force flow through the shaft occupation profile and the hub occupation profile.
[0019] In one embodiment, the offset portion and the hub engaging portion may be constructed in two parts. The offset portion may be connected to the hub engaging portion in a torsionally fixed manner by means of welding. The gap may then be constructed to be thin in the radial direction, for example thinner than in the case of a gap produced by forging. The hub engaging portion may include a locating portion extending in the axial direction, on which the offset portion may be positioned in the radial direction. The locating portion may be cylindrical. The hub engaging portion may include a contact portion extending in the radial direction, and at which the offset portion may be positioned in the axial direction.
[0020] In one embodiment, the offset portion may be constructed in one piece with the hub engaging portion and the connecting portion.The hub element may be produced by forging.
[0021] In one embodiment, the device may include an axial fixing device, which is arranged on the engagement side in the axial direction relative to the offset portion and positions the shaft element in the axial direction relative to the hub element. The axial fixing device may be configured as a bearing, an axial stop, a fixing ring or a snap ring. With the axial fixing device, the movement of the shaft element and the hub element relative to each other may be limitable. The axial fixing device may fit into a groove extending in the circumferential direction in the shaft element. The axial fixing device may fit into a groove extending in the circumferential direction in the hub element. The groove may be arranged in the area of the shaft occupying the contour. The groove may be arranged in the area of the hub occupying the contour. The groove may be arranged between the connection of the offset portion with the hub engagement portion and the end region of the hub engagement portion in the axial direction and arranged on the engagement side in the axial direction. The axial fixing device may be arranged at the end region of the hub engagement portion on the engagement side. The axial fixing device may be positioned on the engagement side in the axial direction directly before the offset portion is connected to the hub engagement portion.
[0022] In an embodiment, the hub element may be formed by a first planet carrier for a first planetary gear set. The device for transmitting torque may be used for a differential transmission having a first planetary gear set. The hub connection portion may be configured to receive a first planet bolt of the first planetary gear set. The hub connection portion may include a cylindrical hole. The hub connection portion may include a plurality of receptacles distributed in a circumferential direction. These receptacles may be evenly distributed in the circumferential direction.
[0023] In one aspect, a differential transmission comprises an input element, a first gear set, a second gear set, a first output shaft, a second output shaft and a device for transmitting torque according to one of the aforementioned embodiments. The input element is mechanically operably connected to the first gear set for transmitting torque. The first gear set is mechanically operably connected to the second gear set for transmitting torque. The first gear set is mechanically operably connected to the first output shaft for output of torque. The second gear set is mechanically operably connected to the second output shaft for output of torque. The first output shaft forms a shaft element of the device for transmitting torque.
[0024] The second output shaft may be rotatably supported at the stationary component via a bearing. The bearing of the second output shaft may be configured as a needle bearing or a grooved ball bearing. The bearing of the second output shaft and the hub engaging portion may be arranged in the same plane in the axial direction. The bearing of the second output shaft may be arranged on the outside of the hub engaging portion in the radial direction.
[0025] The bearing of the second output shaft may be arranged to be offset relative to the hub engaging portion in the axial direction.The bearing of the second output shaft may overlap with the hub engaging portion in the radial direction.
[0026] In one embodiment, the first gear set may be formed by a first planetary gear set. The second gear set may be formed by a second planetary gear set. The first planet carrier of the first planetary gear set may form a hub element. The shaft engagement portion and the hub engagement portion may be arranged on an engagement side in an axial direction relative to the first planetary gear set.
[0027] The first planetary gear set may include a first sun gear, a first planet carrier, a first planet bolt, a first planet gear and a first ring gear. The first sun gear may be engaged with the first planet gear. The first planet gear may be engaged with the first ring gear. The first planet gear may be rotatably mounted on the first planet bolt. The first planet bolt may be connected to the first planet carrier.
[0028] The second planetary gear set may include a second sun gear, a second planet carrier, a second planet bolt, a second planet gear and a second ring gear. The second sun gear may be engaged with the second planet gear. The second planet gear may be engaged with the second ring gear. The second planet gear may be rotatably mounted on the second planet bolt. The second planet bolt may be connected to the second planet carrier.
[0029] Embodiments of the forged first planet carrier may be used in a differential transmission in which a first planetary gear set and a second planetary gear set are arranged offset relative to each other in an axial direction.
[0030] In one embodiment, the input element can be connected to the first sun gear of the first planetary gear set in a torsion-proof manner. The first planet carrier can be connected to the first output shaft in a torsion-proof manner for outputting the torque from the first planetary gear set. The second ring gear of the second planetary gear set can be connected to the second output shaft in a torsion-proof manner for outputting the torque from the second planetary gear set.
[0031] The input element may form a first sun gear at the periphery. The first ring gear may be connected to the second sun gear in a rotationally fixed manner. The first ring gear may be connected to the second sun gear in a rotationally fixed manner via a coupling element. The second planet carrier may be connected to the stationary component in a rotationally fixed manner. The stationary component may be formed by a transmission housing.
[0032] The first output shaft and the second output shaft may be arranged coaxially with the input element. The first output shaft may extend through the input element in an axial direction. The first output shaft may extend at least partially in an axial direction within the second output shaft. The first output shaft may be rotatably supported in the second output shaft.
[0033] The outer diameter of the shaft engaging portion may be smaller in the radial direction than the inner diameter of the passage through the input element.
[0034] The offset portion may be at least partially arranged in the second output shaft in the axial direction. The shaft engaging portion and the hub engaging portion may be partially arranged in the second output shaft in the axial direction. The second output shaft may be partially hollow.
[0035] With the device for transmitting torque according to one of the aforementioned embodiments, the outer diameter of the shaft engagement portion can be smaller. As a result, the first sun gear can be configured to have a smaller outer diameter. As a result, the static transmission ratio of the differential transmission can be increased.
[0036] In one embodiment, the first planetary gear set and the second planetary gear set may be arranged in a stacked manner. The sun ring gear may form a first ring gear at the inner periphery and a second sun gear at the outer periphery. The first planetary gear set and the second planetary gear set may be arranged in the same plane in the axial direction. The second planetary gear set may be arranged outside the first planetary gear set in the radial direction.
[0037] In one aspect, a vehicle comprises: a drive unit; at least two drive wheels; and a differential transmission according to one of the aforementioned embodiments and aspects. The drive unit is configured to drive an input element. One of the drive wheels is configured to drive the vehicle via a first output shaft. Another of the drive wheels is configured to drive the vehicle via a second output shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] Figure 1A cross-sectional view of an embodiment of a differential transmission having a device for transmitting torque is shown.
[0039] Figure 2 A cross-sectional view of another embodiment of a differential transmission having a device for transmitting torque is shown. DETAILED DESCRIPTION
[0040] Figure 1 A cross-sectional view of an embodiment of a differential transmission having a device for transmitting torque is shown. The differential transmission comprises an input element 4, a first gear set (in this case a first planetary gear set 10), a second gear set (in this case a second planetary gear set), a first output shaft 5 and a second output shaft 6. The differential transmission is configured to distribute the torque from the input element 4 to the first output shaft 5 and the second output shaft 6. The device for transmitting torque comprises a hub element and a shaft element. The hub element is formed by the first planet carrier 12 of the first planetary gear set 10. The shaft element is formed by the first output shaft 5.
[0041] The first planet carrier 12 is connected to the shaft joint 41 of the first output shaft 5 via a hub joint 42 in a rotationally fixed manner for outputting torque from the first planetary gear set 10. The hub joint 42 and the shaft joint 41 are designed for a favorable force distribution in the axial direction between the hub footprint contour and the shaft footprint contour.
[0042] Further details of the transmission and devices for transmitting torque are described below.
[0043] The first planetary gear set 10 includes: a first sun gear 11; a first planet carrier 12; a plurality of first planet bolts 13; a plurality of first planet gears 14; and a first ring gear 15. The first sun gear 11 is engaged with one of the first planet gears 14. One of the first planet gears 14 is engaged with the first ring gear 15 and is rotatably mounted on one of the first planet bolts 13. The first planet bolt 13 is connected to the first planet carrier 12.
[0044] Figure 1 The second planetary gear set is not shown in the figure. The second planetary gear set includes: a second sun gear; a second planet carrier; a plurality of second planet bolts; a plurality of second planet gears; and a second ring gear. The second sun gear is engaged with one of the second planet gears. One of the second planet gears is engaged with the second ring gear and is rotatably mounted on one of the second planet bolts. The second planet bolt is connected to the second planet carrier. The second planet carrier is formed by a stationary component 9.
[0045] The first planetary gear set 10 and the second planetary gear set are arranged in the same plane in the axial direction. The second planetary gear set is arranged outside the first planetary gear set 10 in the radial direction.
[0046] The first ring gear 15 and the second sun gear are torque-proof to each other via the coupling element 1. In the present case, the coupling element 1 is formed by a sun ring gear. The sun ring gear comprises the first ring gear 15 at the inner periphery. The sun ring gear comprises the second sun gear at the outer periphery. As a result, the first planetary gear set 10 is mechanically operatively connected to the second planetary gear set.
[0047] At input element 4 Figure 1 On the outer periphery of the end on the right-hand engagement side, the input element 4 forms the first sun gear 11 of the first planetary gear set 10. The second ring gear of the second planetary gear set is connected to the second output shaft 6 in a rotationally fixed manner for outputting torque from the second planetary gear set.
[0048] The first output shaft 5 and the second output shaft 6 are arranged coaxially with the input element 4. The first output shaft 5 extends in the axial direction through the input element 4. The first output shaft 5 extends in the axial direction partially inside the second output shaft 6. The second output shaft 6 is rotatably mounted to a stationary component (in this case, a transmission housing) via a bearing (in this case, a grooved ball bearing).
[0049] The first output shaft 5 includes a shaft connection portion, which is arranged relative to the shaft engagement portion 41 so as to face the connection side ( Figure 1 The shaft connection portion is used to output torque from the first output shaft 5 for driving Figure 1 The first output shaft 5 comprises a shaft engaging portion 41 having a shaft occupying profile (in this case a spline) on the outer circumference. The shaft engaging portion 41 is arranged at the end of the first output shaft 5 on the engaging side.
[0050] The first planet carrier 12 includes a hub engagement portion 42 having a hub occupation profile (in this case, a spline) at the inner circumference. In this regard, the first output shaft 5 and the first planet carrier 12 together form an occupation toothing. The hub engagement portion 42 is arranged offset in the axial direction relative to the bearing of the second output shaft 6. The first planet carrier 12 includes a hub connection portion, which is arranged offset in the axial direction toward the connection side relative to the hub engagement portion 42. In this case, the hub connection portion is formed by a receptacle for the first planet bolt 13 of the first planet carrier 12. The hub connection portion is used to introduce torque from the first planetary gear set 10 into the first planet carrier 12.
[0051] The occupied tooth portion is arranged to be offset toward the engagement side in the axial direction relative to the hub connection portion. The first planet carrier 12 includes an offset portion 30. The offset portion 30 extends from the hub connection portion in the axial direction toward the engagement side. The offset portion 30 includes a radial portion at one end on the engagement side, which extends inwardly in the radial direction of the first output shaft 5. As a result, an annular gap is formed between the hub engagement portion 42 and the offset portion 30 arranged on the connection side relative to the radial portion. The annular gap extends in the radial direction at a height comparable to the height of the hub engagement portion 42 in the radial direction.
[0052] The radial portion is connected to the central area of the hub engaging portion 42 in a rotationally fixed manner. At the same time, the hub engaging portion 42 extends from the radial portion in the axial direction approximately equidistantly toward the connecting side and toward the engaging side. In the present case, the offset portion 30 is constructed as a single piece with the hub engaging portion 42 and the connecting portion. The first planet carrier 12 is produced by forging.
[0053] As a result of the configuration of the first planet carrier 12 with the offset 30 and its connection to the hub joint 42, the torque to be transmitted is introduced close to the center into the engaged toothing. This facilitates the force flow through the engaged toothing. As a result, the engaged toothing can be heavily loaded.
[0054] The first planet carrier 12 can be displaced in the axial direction relative to the first output shaft 5 via the occupied toothing. Therefore, the device includes an axial fixing device 50, which is arranged on the engagement side in the axial direction relative to the offset portion 30. The axial fixing device 50 is configured as a fixing ring and positions the first output shaft 5 in the axial direction relative to the first planet carrier 12. The fixing ring fits into a groove extending in the circumferential direction at the outer periphery of the first output shaft 5. The fixing ring fits into a groove extending in the circumferential direction at the inner periphery of the first planet carrier 12. The fixing ring is arranged at the end area of the occupied toothing on the engagement side.
[0055] Figure 2 A cross-sectional view of another embodiment of a differential transmission having a device for transmitting torque is shown. This embodiment differs from the previous embodiment in that the first planet carrier 12, the first output shaft 5 and the second output shaft 6 are different.
[0056] In the present case, the first planet carrier 12 is constructed in two parts. The hub engaging portion 42 is constructed separately from the offset portion 30. The offset portion 30 is welded to the hub engaging portion 42 at a connecting protrusion extending in the radial direction. The connecting protrusion is provided instead of the radial portion of the aforementioned embodiment. The hub engaging portion 42 is constructed in the radial direction within the bearing of the second output shaft 6. The hub engaging portion 42 and the bearing of the second output shaft 6 are arranged in the same plane in the axial direction. The bearing of the second output shaft 6 is constructed as a needle roller bearing.
[0057] The gap between the hub engagement portion 42 and the offset portion 30 is configured to be significantly thinner in the radial direction than in the previous embodiment. The axial fixing device 50 is arranged directly from the connecting projection at the engagement side in the axial direction.
[0058] The offset portion 30 is connected to the end region of the hub engagement portion 42 arranged on the engagement side in the axial direction. Therefore, the hub engagement portion 42 extends further from the connecting protrusion toward the connection side than toward the engagement side. As a result, the torque to be transmitted is introduced further away from the end of the occupied tooth portion arranged on the connection side. As a result, the force flow through the occupied tooth portion can be distributed in a wide area from the connecting protrusion to the end region on the engagement side in the axial direction. This is beneficial for the force flow through the occupied tooth portion. As a result, the occupied tooth portion can be heavily loaded.
[0059] Reference numerals
[0060] 1 Connecting element
[0061] 4 Input components
[0062] 5 First output shaft
[0063] 6 Second output shaft
[0064] 10 First planetary gear set
[0065] 11. First sun gear
[0066] 12 First planet carrier
[0067] 13 First planet bolt
[0068] 14 First planetary gear
[0069] 15 First ring gear
[0070] 30 offset
[0071] 41 Shaft joint
[0072] 42 hub joint
[0073] 50 Axial fixing device
Claims
1. A device for transmitting torque, comprising a hub element and a shaft element, wherein The hub element comprises a hub engagement portion (42) having a hub engagement profile, the hub engagement portion (42) being engageable with a shaft engagement portion (41) of the shaft element having a shaft engagement profile for transmitting torque, The hub element comprises a hub connecting portion which is arranged offset toward a connecting side in the axial direction relative to the hub engaging portion (42), and The shaft element includes a shaft connecting portion which is arranged offset toward the connecting side in the axial direction relative to the shaft engaging portion (41).
2. The device according to claim 1, characterized in that The hub element is displaceable in the axial direction relative to the shaft element.
3. The device according to claim 1 or 2, characterized in that The hub engagement portion (42) and the shaft engagement portion (41) are configured for uniform force distribution in the axial direction between the hub engagement contour and the shaft engagement contour.
4. The device according to any one of the preceding claims, characterized in that The hub element comprises an offset portion (30) which extends from the hub connection portion in the axial direction toward a coupling side opposite to the connection side and is connected to a region of the hub coupling portion (42) in a rotationally fixed manner.
5. The device according to claim 4, characterized in that The offset portion (30) is connected to a region of the hub engaging portion (42) which is central in the axial direction.
6. The device according to claim 4, characterized in that The offset portion (30) is connected to an end region of the hub engagement portion (42) that is arranged on the engagement side in the axial direction.
7. The device according to any one of claims 4 to 6, characterized in that The offset part (30) and the hub engaging part (42) are constructed in two parts, and the offset part (30) is connected to the hub engaging part (42) in a rotationally fixed manner by means of welding.
8. The device according to any one of claims 4 to 6, characterized in that The offset portion (30) is constructed as a single piece with both the hub engaging portion (42) and the connecting portion.
9. The device according to any one of claims 4 to 8, characterized in that The device comprises an axial fixing device (50) which is arranged on the engagement side relative to the offset portion (30) in the axial direction and positions the shaft element relative to the hub element in the axial direction.
10. The device according to any one of the preceding claims, characterized in that The hub element is formed by a first planet carrier (12) for a first planetary gear set (10).
11. A differential transmission having an input element (4), a first gear set, a second gear set, a first output shaft (5), a second output shaft (6) and a device according to one of the preceding claims, wherein The input element (4) is mechanically operatively connected to the first gear set for transmitting torque, The first gear set is mechanically operatively connected to the second gear set for transmitting torque, The first gear set is mechanically operatively connected to the first output shaft (5) for outputting torque, The second gear set is mechanically operatively connected to the second output shaft (6) for outputting torque, and The first output shaft (5) forms a shaft element of the device.
12. The differential transmission according to claim 11, characterized in that: The first gear set is formed by a first planetary gear set (10), The second gear set is formed by a second planetary gear set, and The first planet carrier (12) of the first planetary gear set (10) forms the hub element.
13. The differential transmission according to claim 12, characterized in that: The input element (4) is connected to the first sun gear (11) of the first planetary gear set (10) in a rotationally fixed manner. The first planet carrier (12) is connected to the first output shaft (5) in a rotationally fixed manner for outputting torque from the first planetary gear set (10), and The second ring gear of the second planetary gear set is connected to the second output shaft (6) in a rotationally fixed manner for outputting torque from the second planetary gear set.
14. The differential transmission according to claim 12 or 13, characterized in that: The first planetary gear set (10) and the second planetary gear set are arranged in a stacked manner.
15. A vehicle having: a drive unit; at least two drive wheels; and a differential transmission according to one of claims 11 to 14, wherein: The drive unit is configured to drive the input element (4). One of the drive wheels is configured to drive the vehicle via the first output shaft (5), and The other of the drive wheels is configured to drive the vehicle via the second output shaft (6).