Automobile transmission system and automobile

Abstract

The application provides an automobile transmission system and an automobile. The automobile transmission system comprises a first double-stage planetary gear train, a driving assembly, a first differential, a first wheel, a second wheel and a first adjusting assembly. The first double-stage planetary gear train is connected with the first wheel through a first half shaft and connected with the first differential through a second half shaft. The first differential is in driving connection with the driving assembly, and the first differential is connected with the second wheel through a third half shaft. The first adjusting assembly is used for controlling the first double-stage planetary gear train to switch between a first state and a second state. In the first state, the first half shaft, the second half shaft and the third half shaft rotate in the same direction. In the second state, the second half shaft and the third half shaft rotate in the opposite direction of the first half shaft. Through the arrangement, the automobile can not only normally drive, but also make a U-turn, so that the U-turn speed of the automobile is improved, the U-turn time is saved, the space occupied during the U-turn is reduced, and the automobile can more conveniently and flexibly make a U-turn on a narrow road.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile transmission technology, and in particular to an automobile transmission system and an automobile. BACKGROUND

[0002] With the development of society, automobiles have become a common means of transportation and entered ordinary families. As the number of vehicles increases, traffic and parking problems begin to trouble the car-owning population, especially when turning around on a relatively narrow road. Due to the influence of the turning radius of the automobile, the driver needs to reverse twice to complete the turning, which is not only complicated and time-consuming, but also may cause traffic accidents due to traffic congestion.

[0003] At present, some vehicle models can control the slip of the inner rear wheels when turning, thereby reducing the turning radius of the vehicle, but due to structural limitations, the effect is still not good. SUMMARY

[0004] In view of this, the present application provides an automobile transmission system and an automobile, which can solve the technical problem of inconvenience of automobile turning on a narrow road.

[0005] Specifically, the technical solutions include the following:

[0006] In a first aspect, the present application provides an automobile transmission system, which comprises a first double planetary gear set, a driving assembly, a first differential, a first wheel, a second wheel and a first adjusting assembly, wherein the first wheel and the second wheel are concentric and spaced apart;

[0007] The first double planetary gear set is connected with the first wheel through a first half shaft and connected with the first differential through a second half shaft;

[0008] The first differential is in transmission connection with the driving assembly, and the side of the first differential away from the first double planetary gear set is connected with the second wheel through a third half shaft;

[0009] The first adjusting assembly is used to control the first double planetary gear set to switch between a first state and a second state, thereby adjusting the steering of the first half shaft and the second half shaft;

[0010] Wherein, in the first state, the steering of the first half shaft, the second half shaft and the third half shaft is the same; in the second state, the steering of the second half shaft and the third half shaft is opposite to the steering of the first half shaft.

[0011] In an optional embodiment, the first double planetary gear set comprises a sun gear, a planet carrier, a ring gear, a first-stage planetary gear and a second-stage planetary gear;

[0012] The first stage planetary gear and the second stage planetary gear are both mounted on the planet carrier, the first stage planetary gear is engaged with the sun gear and the second stage planetary gear respectively, and the second stage planetary gear is further engaged with the ring gear.

[0013] The sun gear is mounted on the first half shaft, and the planet carrier is mounted on the second half shaft.

[0014] In an optional embodiment, the first adjusting assembly comprises a first clutch and a second clutch, the first clutch is arranged between the planet carrier and the ring gear, and the first clutch is used for controlling the connection or separation of the ring gear and the planet carrier.

[0015] The second clutch is used for locking or releasing the ring gear, so that the ring gear can be stationary or rotating.

[0016] In an optional embodiment, in the first state, the first clutch controls the connection of the ring gear and the planet carrier, and the second clutch releases the ring gear.

[0017] In the second state, the first clutch controls the separation of the ring gear and the planet carrier, and the second clutch locks the ring gear.

[0018] In an optional embodiment, the automobile transmission system further comprises a housing, the first double-stage planetary gear set, the first adjusting assembly and the first differential are all located in the housing, the second clutch is mounted on the housing and located between the housing and the ring gear, and the second clutch can connect or separate the ring gear and the housing, so that the ring gear is stationary relative to the housing or rotating relative to the housing.

[0019] In an optional embodiment, the ring gear and the sun gear have a tooth number ratio of 2.

[0020] In an optional embodiment, the automobile transmission system further comprises a transfer, a second differential, a third wheel and a fourth wheel.

[0021] The third wheel and the fourth wheel are concentric and arranged at intervals, and the second differential is respectively drivingly connected with the third wheel and the fourth wheel.

[0022] The transfer comprises a first gear and a second gear engaged with each other, the first gear is mounted on the second half shaft, the center axis of the second gear is perpendicular to the second half shaft, and the second gear is connected with the second differential.

[0023] In an optional embodiment, the automobile transmission system further comprises a second double planetary gear set and a second adjusting assembly, the second double planetary gear set is connected with the third wheel through a fourth half shaft and connected with the second differential through a fifth half shaft, the second differential is connected with the fourth wheel through a sixth half shaft at a side away from the second double planetary gear set;

[0024] The second adjusting assembly is configured to control the second double planetary gear set to switch between the first state and the second state, thereby adjusting the rotation directions of the fourth half shaft and the fifth half shaft;

[0025] In the first state, the rotation directions of the fourth half shaft, the fifth half shaft and the sixth half shaft are the same; in the second state, the rotation directions of the fifth half shaft and the sixth half shaft are opposite to that of the fourth half shaft.

[0026] In an optional embodiment, the third wheel is located at the same side as the first wheel and has the same rotation direction as the first wheel, and the fourth wheel is located at the same side as the second wheel and has the same rotation direction as the second wheel.

[0027] In a second aspect, the present application provides an automobile, which comprises the automobile transmission system according to any one of the first aspect, the automobile has at least a driving mode and a U-turn mode;

[0028] In the driving mode, the first double planetary gear set is in the first state;

[0029] In the U-turn mode, the first double planetary gear set is in the second state.

[0030] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects: by arranging the first adjusting assembly and the first double planetary gear set, the power transmission path of the first double planetary gear set can be controlled by the first adjusting assembly, and in cooperation with the first differential, the rotation directions and rotation speeds of the first wheel and the second wheel can be adjusted; in the first state, the rotation directions of the first half shaft, the second half shaft and the third half shaft are the same, and the rotation directions of the first wheel and the second wheel are the same, so that the automobile can drive normally; in the second state, the rotation directions of the second half shaft and the third half shaft are opposite to that of the first half shaft, and the rotation directions of the first wheel and the second wheel are opposite, so that the automobile can U-turn, which not only improves the U-turn speed of the automobile and saves the U-turn time, but also reduces the space occupied during U-turn, so that the automobile can U-turn more conveniently and flexibly on a narrow road. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0032] Figure 1 The structural schematic diagram of the automobile transmission system provided by the embodiments of the present application is shown in the figure.

[0033] Figure 2 The structural schematic diagram of the first double-planetary gear train provided by the embodiments of the present application is shown in the figure.

[0034] Figure 3 The power transmission schematic diagram of the automobile transmission system provided by the embodiments of the present application when the first double-planetary gear train and the second double-planetary gear train are both in the first state is shown in the figure.

[0035] Figure 4 The power transmission schematic diagram of the automobile transmission system provided by the embodiments of the present application when the first double-planetary gear train and the second double-planetary gear train are both in the second state is shown in the figure.

[0036] The reference signs in the figure respectively represent:

[0037] 1-First double-planetary gear train; 11-Sun gear; 12-Planet carrier; 13-Hub; 14-First stage planetary gear; 15-Second stage planetary gear;

[0038] 2-Drive assembly; 21-Engine; 22-Transmission;

[0039] 31-First differential; 32-Second differential;

[0040] 41-First wheel; 42-Second wheel; 43-Third wheel; 44-Fourth wheel;

[0041] 5-First adjusting assembly; 51-First clutch; 52-Second clutch;

[0042] 61-First half shaft; 62-Second half shaft; 63-Third half shaft; 64-Fourth half shaft; 65-Fifth half shaft; 66-Sixth half shaft;

[0043] 7-Differential; 71-First gear; 72-Second gear;

[0044] 8-Second double-planetary gear train;

[0045] 9-Second adjusting assembly.

[0046] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] In the embodiments of this application, directional terms such as "upper," "lower," and "side" are generally used in the following ways: Figure 1 The relative positions shown are based on the given information, and these directional terms are used only to more clearly describe the relationships between structures, not to describe absolute positions. Positions may change when the product is placed in different orientations; for example, "up" and "down" may be interchanged.

[0049] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art. Some technical terms appearing in the embodiments of this application are described below.

[0050] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0051] With societal development, cars have become a common mode of transportation for ordinary people. As the number of vehicles increases, traffic and parking problems begin to plague car owners, especially when making U-turns on narrow roads. Due to the car's turning radius, drivers often need to reverse twice to complete the turn, which is not only complicated and time-consuming, but also can lead to traffic accidents due to congestion.

[0052] Currently, some vehicle models can control the slippage of the inner rear wheel when making a U-turn, thereby reducing the vehicle's turning radius. However, due to structural limitations, the effect is still not very good, and it cannot achieve a U-turn on the spot like a tank.

[0053] To address the aforementioned technical problems, this application provides an automotive transmission system and an automotive vehicle.

[0054] like Figures 1 to 4As shown, the automobile transmission system provided by the embodiment of the application comprises a first double-stage planetary gear set 1, a driving assembly 2, a first differential 31, a first wheel 41, a second wheel 42 and a first adjusting assembly 5, and the first wheel 41 and the second wheel 42 are concentric and spaced apart.

[0055] The first double-stage planetary gear set 1 is connected with the first wheel 41 through a first half shaft 61 and connected with the first differential 31 through a second half shaft 62.

[0056] The first differential 31 is in driving connection with the driving assembly 2, and the side of the first differential 31 away from the first double-stage planetary gear set 1 is connected with the second wheel 42 through a third half shaft 63.

[0057] The first adjusting assembly 5 is used for controlling the first double-stage planetary gear set 1 to switch between a first state and a second state, so as to adjust the steering directions of the first half shaft 61 and the second half shaft 62.

[0058] In the first state, the steering directions of the first half shaft 61, the second half shaft 62 and the third half shaft 63 are the same, and in the second state, the steering directions of the second half shaft 62 and the third half shaft 63 are opposite to that of the first half shaft 61.

[0059] Exemplarily, the automobile transmission system can be applied to a four-wheel drive vehicle, and can also be applied to a two-wheel drive vehicle.

[0060] Optionally, the first wheel 41 and the second wheel 42 are both front wheels of the automobile, for example, Figure 1 As shown, the first wheel 41 is a left front wheel of the automobile, and the second wheel 42 is a right front wheel of the automobile. Alternatively, the first wheel 41 and the second wheel 42 are both rear wheels of the automobile.

[0061] As shown, Figure 1 The driving assembly 2 comprises an engine 21 and a gearbox 22, the gearbox 22 is connected with the engine 21 and the first differential 31 respectively, and the first differential 31 is used for adjusting the speed difference of the first wheel 41 and the second wheel 42, so that the first wheel 41 and the second wheel 42 roll at different speeds when the automobile turns or drives on uneven road.

[0062] The central axes of the first half shaft 61, the second half shaft 62 and the third half shaft 63 coincide, and the first half shaft 61, the second half shaft 62 and the third half shaft 63 are used for transmitting torque. The first half shaft 61 is connected with the first wheel 41 and the first double-stage planetary gear set 1 respectively, the second half shaft 62 is connected with the first double-stage planetary gear set 1 and the first differential 31 respectively, and the third half shaft 63 is connected with the first differential 31 and the second wheel 42 respectively.

[0063] The first double-stage planetary gear set 1 is a single-row double-stage planetary gear structure, which has one more stage of gear transmission than a single-row single-stage planetary gear structure.

[0064] In the prior art, planetary rows are commonly used in the gearbox 22, and the transmission ratio adjustment is achieved by adjusting the relative positions and speeds between the gears of the planetary rows. In the present application, the first double-stage planetary row 1 is arranged between the first half shaft 61 and the first differential 31, and the rotation direction of the first half shaft 61 can be changed. The power transmission path of the first double-stage planetary row 1 is controlled by the first adjusting assembly 5, so that the first half shaft 61 and the second half shaft 62 on the two axial sides of the first double-stage planetary row 1 can be steered in the same direction, and the first half shaft 61 and the second half shaft 62 on the two axial sides of the first double-stage planetary row 1 can also be steered in opposite directions, thereby adjusting the steering of the first wheel 41 and the second wheel 42, so that the vehicle can normally travel or make a U-turn.

[0065] Specifically, in the first state, since the first half shaft 61, the second half shaft 62 and the third half shaft 63 are steered in the same direction, the first wheel 41 and the second wheel 42 are steered in the same direction, and the vehicle can realize normal travel function; in the second state, the first half shaft 61 and the third half shaft 63 are steered in opposite directions, so the first wheel 41 and the second wheel 42 are steered in opposite directions, and the vehicle can realize the function of making a U-turn.

[0066] The vehicle transmission system provided by the embodiments of the present application can control the power transmission path of the first double-stage planetary row 1 through the first adjusting assembly 5, and in cooperation with the first differential 31, the steering and rotation speed of the first wheel 41 and the second wheel 42 can be adjusted; in the first state, the first half shaft 61, the second half shaft 62 and the third half shaft 63 are steered in the same direction, the first wheel 41 and the second wheel 42 are steered in the same direction, and the vehicle can normally travel; in the second state, the second half shaft 62 and the third half shaft 63 are steered in opposite directions to the first half shaft 61, and the first wheel 41 and the second wheel 42 are steered in opposite directions, and the vehicle can make a U-turn, which not only improves the U-turn speed of the vehicle, saves the U-turn time, but also reduces the space occupied during the U-turn, so that the vehicle can make a U-turn more conveniently and flexibly on a narrow road.

[0067] In a specific embodiment, as shown in Figure 2 The first double-stage planetary row 1 includes a sun gear 11, a planet carrier 12, a ring gear 13, a first-stage planetary gear 14 and a second-stage planetary gear 15.

[0068] The first-stage planetary gear 14 and the second-stage planetary gear 15 are both installed on the planet carrier 12, the first-stage planetary gear 14 is engaged with the sun gear 11 and the second-stage planetary gear 15, and the second-stage planetary gear 15 is further engaged with the ring gear 13. The number of the first-stage planetary gear 14 and the second-stage planetary gear 15 can be one or more, which is not limited in the present application.

[0069] The sun gear 11 is mounted on the first half shaft 61, and the planet carrier 12 is mounted on the second half shaft 62.

[0070] In this embodiment, the sun gear 11 and the planet carrier 12 are mounted on different half shafts respectively, and the first adjusting assembly 5 can control the relative positional relationship between the components of the first double-stage planetary gear train 1, so as to change the power transmission path of the first double-stage planetary gear train 1, and further adjust the rotation relationship between the sun gear 11 and the planet carrier 12.

[0071] Specifically, in the first state, the first adjusting assembly 5 controls the sun gear 11 and the planet carrier 12 to rotate in the same direction; in the second state, the first adjusting assembly 5 controls the sun gear 11 and the planet carrier 12 to rotate in different directions.

[0072] Further, the first adjusting assembly 5 includes a first clutch 51 and a second clutch 52, and the first clutch 51 and the second clutch 52 are both used to cut off or transmit power.

[0073] The first clutch 51 is arranged between the planet carrier 12 and the ring gear 13, and the first clutch 51 is used to control the connection or separation of the ring gear 13 and the planet carrier 12.

[0074] The second clutch 52 is used to lock or release the ring gear 13, so that the ring gear 13 can be stationary or rotating.

[0075] In the case that the first clutch 51 works, the ring gear 13 and the planet carrier 12 are connected, at this time, the ring gear 13 and the planet carrier 12 rotate synchronously, and the rotational speed of the ring gear 13 is the same as that of the planet carrier 12 and no relative rotation occurs; in the case that the first clutch 51 is loosened, the ring gear 13 and the planet carrier 12 are separated, and the ring gear 13 and the planet carrier 12 can produce relative rotation.

[0076] In the case that the second clutch 52 works, the ring gear 13 is locked and cannot rotate, and the ring gear 13 is stationary relative to the ground; in the case that the second clutch 52 is loosened, the ring gear 13 can rotate relative to the ground.

[0077] In this embodiment, by adjusting the state of the ring gear 13 through the first clutch 51 and the second clutch 52, the adjustment of the power transmission path between the sun gear 11 and the planet carrier 12 is realized.

[0078] Further, in the first state, the first clutch 51 controls the connection of the ring gear 13 and the planet carrier 12, and the second clutch 52 releases the ring gear 13; in the second state, the first clutch 51 controls the separation of the ring gear 13 and the planet carrier 12, and the second clutch 52 locks the ring gear 13.

[0079] Specifically, the transmission formula of the first double-stage planetary gear train 1 is:

[0080] ns -αn r =(1-α)n c

[0081] wherein n s is the sun gear rotational speed, n r is the ring gear rotational speed, n c is the carrier rotational speed, and α is the ring gear and sun gear tooth ratio.

[0082] When the automobile is running normally, the first double planetary gear set 1 is in the first state, the rotational speeds of the carrier 12 and the ring gear 13 are the same, i.e., n c =n r According to the above transmission formula, n c =n r =n s That is, the first double planetary gear set 1 rotates as a whole, the speed ratio of the first double planetary gear set 1 is 1, and the power transmission route of the first double planetary gear set 1 is as shown in FIG. 1. Figure 3

[0083] When the automobile is reversing, the first double planetary gear set 1 is in the second state, the ring gear 13 is locked by the second clutch 52 and cannot rotate. If the carrier 12 rotates forward, the sun gear 11 rotates reversely after the transmission of the second planetary gear 15 and the first planetary gear 14, that is, the rotational directions of the carrier 12 and the sun gear 11 are opposite, at this time, the rotational directions of the first half shaft 61 and the second half shaft 62 are opposite, and the rotational directions of the first wheel 41 and the second wheel 42 are opposite, so that the automobile realizes reversing, and the power transmission route of the first double planetary gear set 1 is as shown in FIG. 2. Figure 4

[0084] wherein the second clutch 52 can be installed on other components of the automobile body, so that when the ring gear 13 is locked by the second clutch 52, the ring gear 13 is stationary relative to the automobile body.

[0085] In a specific embodiment, the automobile transmission system further comprises a housing, the first double planetary gear set 1, the first adjusting assembly 5 and the first differential 31 are located in the housing, the second clutch 52 is installed on the housing and located between the housing and the ring gear 13, and the second clutch 52 can connect or separate the ring gear 13 from the housing, so that the ring gear 13 is stationary or rotates relative to the housing.

[0086] In this embodiment, by providing the housing, not only the first double planetary gear set 1, the first adjusting assembly 5 and the first differential 31 are protected, but also the second clutch 52 can lock or release the ring gear 13, so that the ring gear 13 can be stationary or rotate relative to the ground.

[0087] ​​In one embodiment, the gear ratio of the ring gear 13 and the sun gear 11 is 2, i.e., the number of teeth of the ring gear 13 / the number of teeth of the sun gear 11 = 2, α = 2.

[0088] In the second state, the ring gear 13 is locked by the second clutch 52, and the rotation speed n c = 0 of the ring gear 13 can be obtained according to the transmission formula of the first double-stage planetary gear set 1: n s = -n c , i.e., the rotation speeds of the sun gear 11 and the planet carrier 12 are the same, but the directions are opposite, so that the car can better realize the effect of turning around in place.

[0089] As shown in Figure 1 , Figure 3 or Figure 4 , the automobile transmission system further comprises a transfer 7, a second differential 32, a third wheel 43 and a fourth wheel 44.

[0090] The third wheel 43 and the fourth wheel 44 are concentric and spaced apart, and the second differential 32 is in driving connection with the third wheel 43 and the fourth wheel 44, respectively.

[0091] The transfer 7 comprises a first gear 71 and a second gear 72 which are in mesh with each other, the first gear 71 is installed on the second half shaft 62, and the center axis of the second gear 72 is perpendicular to the second half shaft 62, and the second gear 72 is connected with the second differential 32.

[0092] Optionally, the third wheel 43 and the fourth wheel 44 are both rear wheels of the automobile, for example Figure 1 as shown, the third wheel 43 is a left rear wheel, and the fourth wheel 44 is a right rear wheel. By arranging the transfer 7, power can be transmitted from the first differential 31 to the second differential 32, i.e., power can be transmitted from the front end of the automobile to the rear end.

[0093] The automobile transmission system further comprises a second double-stage planetary gear set 8 and a second adjusting assembly 9, the second double-stage planetary gear set 8 is connected with the third wheel 43 through a fourth half shaft 64, and connected with the second differential 32 through a fifth half shaft 65, and the side of the second differential 32 away from the second double-stage planetary gear set 8 is connected with the fourth wheel 44 through a sixth half shaft 66.

[0094] The second adjusting assembly 9 is used to control the second double-stage planetary gear set 8 to switch between the first state and the second state, so as to adjust the directions of the fourth half shaft 64 and the fifth half shaft 65.

[0095] In the first state, the directions of the fourth half shaft 64, the fifth half shaft 65 and the sixth half shaft 66 are the same; in the second state, the directions of the fifth half shaft 65 and the sixth half shaft 66 are opposite to the direction of the fourth half shaft 64.

[0096] The central axes of the fourth half shaft 64, the fifth half shaft 65 and the sixth half shaft 66 coincide, and the fourth half shaft 64, the fifth half shaft 65 and the sixth half shaft 66 are used to transmit torque. The fourth half shaft 64 is connected with the third wheel 43 and the second double planetary gear set 8 respectively, the fifth half shaft 65 is connected with the second double planetary gear set 8 and the second differential 32 respectively, and the sixth half shaft 66 is connected with the second differential 32 and the fourth wheel 44 respectively.

[0097] The second double planetary gear set 8 is a single-row double planetary gear structure, and the power transmission path of the second double planetary gear set 8 is controlled by the second adjusting assembly 9. Not only can the fourth half shaft 64 and the fifth half shaft 65 on the two axial sides of the second double planetary gear set 8 be steered in the same direction, but also the fourth half shaft 64 and the fifth half shaft 65 on the two axial sides of the second double planetary gear set 8 can be steered in opposite directions, thereby adjusting the steering of the third wheel 43 and the fourth wheel 44, so that the automobile can normally drive or make a U-turn.

[0098] Specifically, in the first state, since the fourth half shaft 64, the fifth half shaft 65 and the sixth half shaft 66 are steered in the same direction, the third wheel 43 and the fourth wheel 44 are steered in the same direction, and the automobile can realize normal driving function; in the second state, the fourth half shaft 64 and the fifth half shaft 65 are steered in opposite directions, so the third wheel 43 and the fourth wheel 44 are steered in opposite directions, and the automobile can realize the function of making a U-turn.

[0099] Optionally, the structure of the second double planetary gear set 8 is the same as that of the first double planetary gear set 1, and the structure of the second adjusting assembly 9 is the same as that of the first adjusting assembly 5.

[0100] For example, the second double planetary gear set 8 includes a sun gear 11, a planet carrier 12, a ring gear 13, first-stage planetary gears 14 and second-stage planetary gears 15. The first-stage planetary gears 14 and the second-stage planetary gears 15 are both installed on the planet carrier 12, the first-stage planetary gears 14 are in mesh with the sun gear 11 and the second-stage planetary gears 15 respectively, and the second-stage planetary gears 15 are also in mesh with the ring gear 13. The sun gear 11 is installed on the fourth half shaft 64, and the planet carrier 12 is installed on the fifth half shaft 65.

[0101] For example, the second adjusting assembly 9 includes a first clutch 51 and a second clutch 52. The first clutch 51 is arranged between the planet carrier 12 and the ring gear 13 of the second double planetary gear set 8, and is used to control the connection or separation of the ring gear 13 and the planet carrier 12. The second clutch 52 is used to lock or release the ring gear 13 of the second double planetary gear set 8, so that the ring gear 13 of the second double planetary gear set 8 can be stationary or rotating.

[0102] Further, the third wheel 43 is located on the same side as the first wheel 41 and the third wheel 43 has the same steering direction as the first wheel 41, and the fourth wheel 44 is located on the same side as the second wheel 42 and the fourth wheel 44 has the same steering direction as the second wheel 42.

[0103] As shown in FIG. 1, the third wheel 43 always rotates with the same steering direction as the first wheel 41, and the fourth wheel 44 always rotates with the same steering direction. Figure 3 Figure 4 As shown in FIG. 1, the third wheel 43 always rotates with the same steering direction as the first wheel 41, and the fourth wheel 44 always rotates with the same steering direction.

[0104] As shown in FIG. 1, the third wheel 43 always rotates with the same steering direction as the first wheel 41, and the fourth wheel 44 always rotates with the same steering direction. Figure 3 As shown in FIG. 4, when the vehicle is reversing, the first wheel 41 and the third wheel 43 have the same steering direction, the second wheel 42 and the fourth wheel 44 have the same steering direction, and the steering direction of the second wheel 42 and the fourth wheel 44 is opposite to that of the first wheel 41 and the third wheel 43, so that the vehicle can complete the reversing action.

[0105] The application also provides a vehicle, which comprises the vehicle transmission system provided by any of the above embodiments. The vehicle has at least a driving mode and a reversing mode.

[0106] In the driving mode, the first double planetary gear set 1 is in the first state. Specifically, the first wheel 41 and the second wheel 42 have the same steering direction, and the vehicle can drive normally.

[0107] In the reversing mode, the first double planetary gear set 1 is in the second state. Specifically, the first wheel 41 and the second wheel 42 have opposite steering directions, and the vehicle can reverse.

[0108] The vehicle provided by the embodiments of the application can control the power transmission path of the first double planetary gear set 1 through the first adjusting assembly 5, and adjust the steering direction and the rotating speed of the first wheel 41 and the second wheel 42 in cooperation with the first differential 31. In the first state, the first half shaft 61, the second half shaft 62 and the third half shaft 63 have the same steering direction, the first wheel 41 and the second wheel 42 have the same steering direction, and the vehicle can drive normally. In the second state, the second half shaft 62 and the third half shaft 63 have opposite steering directions with the first half shaft 61, and the first wheel 41 and the second wheel 42 have opposite steering directions, and the vehicle can reverse. The vehicle not only improves the reversing speed, saves the reversing time, but also reduces the space occupied during reversing, so that the vehicle can reverse more conveniently and flexibly on narrow road.

[0109] ​In this application, the terms "first" and "second" are used only for descriptive purposes and not to connote or imply relative importance. The term "plurality" refers to two or more, unless otherwise expressly specified.

[0110] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope of the application being indicated by the following claims.

[0111] It is to be understood that the application is not limited to the precise details of construction and the above-described and illustrated exact construction, and that various modifications and changes can be applied to the application without departing from the scope thereof or sacrificing any of its advantages. The scope of the application is accordingly indicated by the following claims, rather than the foregoing description.

Claims

1. An automotive driveline system characterised in that, The automobile transmission system comprises a first double-stage planetary gear train (1), a driving assembly (2), a first differential (3), a first wheel (41), a second wheel (42) and a first adjusting assembly (5), the first wheel (41) and the second wheel (42) are concentric and spaced apart; The first double-stage planetary gear train (1) is connected with the first wheel (41) through a first half shaft (61) and connected with the first differential (3) through a second half shaft (62); The first differential (3) is in driving connection with the driving assembly (2), and a side, away from the first double-stage planetary gear train (1), of the first differential (3) is connected with the second wheel (42) through a third half shaft (63); The first adjusting assembly (5) is used for controlling the first double-stage planetary gear train (1) to switch between a first state and a second state, so as to adjust the steering directions of the first half shaft (61) and the second half shaft (62); In the first state, the steering directions of the first half shaft (61), the second half shaft (62) and the third half shaft (63) are the same; in the second state, the steering directions of the second half shaft (62) and the third half shaft (63) are opposite to that of the first half shaft (61); the first double-stage planetary gear train (1) comprises a sun gear (11), a planet carrier (12), a ring gear (13), a first-stage planetary gear (14) and a second-stage planetary gear (15); The first-stage planetary gear (14) and the second-stage planetary gear (15) are both mounted on the planet carrier (12), the first-stage planetary gear (14) is in mesh with the sun gear (11) and the second-stage planetary gear (15) respectively, and the second-stage planetary gear (15) is also in mesh with the ring gear (13); The sun gear (11) is mounted on the first half shaft (61), and the planet carrier (12) is mounted on the second half shaft (62); the first adjusting assembly (5) comprises a first clutch (51) and a second clutch (52), the first clutch (51) is arranged between the planet carrier (12) and the ring gear (13), and the first clutch (51) is used for controlling the connection or separation of the ring gear (13) and the planet carrier (12); The second clutch (52) is used for locking or releasing the ring gear (13), so that the ring gear (13) can be static or rotating.

2. The automotive driveline system of claim 1, wherein, In the first state, the first clutch (51) controls the connection of the ring gear (13) and the planet carrier (12), and the second clutch (52) releases the ring gear (13); In the second state, the first clutch (51) controls the separation of the ring gear (13) and the planet carrier (12), and the second clutch (52) locks the ring gear (13).

3. The automotive driveline system of claim 2, wherein, The automobile transmission system further comprises a housing, the first double-stage planetary gear set (1), the first adjusting assembly (5) and the first differential (3) are located in the housing, the second clutch (52) is installed on the housing and located between the housing and the ring gear (13), the second clutch (52) can connect or separate the ring gear (13) and the housing, so that the ring gear (13) is stationary relative to the housing or rotates relative to the housing.

4. The automotive driveline system of claim 2, wherein, The ring gear (13) and the sun gear (11) have a gear ratio of 2.

5. The automotive transmission system of claim 1, wherein, The automobile transmission system further comprises a transfer (7), a second differential, a third wheel (43) and a fourth wheel (44); The third wheel (43) and the fourth wheel (44) are concentric and spaced apart, and the second differential is drivingly connected with the third wheel (43) and the fourth wheel (44) respectively; The transfer (7) comprises a first gear (71) and a second gear (72) which are engaged with each other, the first gear (71) is installed on the second half shaft (62), and the center axis of the second gear (72) is perpendicular to the second half shaft (62) and the second gear (72) is connected with the second differential.

6. The automotive driveline system of claim 5, wherein, The automobile transmission system further comprises a second double-stage planetary gear set (8) and a second adjusting assembly (9), the second double-stage planetary gear set (8) is connected with the third wheel (43) through a fourth half shaft (64) and connected with the second differential through a fifth half shaft (65), and the side of the second differential away from the second double-stage planetary gear set (8) is connected with the fourth wheel (44) through a sixth half shaft (66); The second adjusting assembly (9) is used for controlling the second double-stage planetary gear set (8) to switch between the first state and the second state, so as to adjust the steering directions of the fourth half shaft (64) and the fifth half shaft (65); In the first state, the steering directions of the fourth half shaft (64), the fifth half shaft (65) and the sixth half shaft (66) are the same, and in the second state, the steering directions of the fifth half shaft (65) and the sixth half shaft (66) are opposite to that of the fourth half shaft (64).

7. An automotive driveline according to claim 5 or 6, characterised in that, The third wheel (43) is located on the same side as the first wheel (41) and has the same steering direction as the first wheel (41), and the fourth wheel (44) is located on the same side as the second wheel (42) and has the same steering direction as the second wheel (42).

8. An automobile characterized by comprising: The automobile comprises the automobile transmission system according to any one of claims 1 to 7, and the automobile has at least a driving mode and a spot turn mode; In the driving mode, the first double-stage planetary gear set (1) is in the first state; In the spot turn mode, the first double-stage planetary gear set (1) is in the second state.

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