Two-gear variable-speed electric drive axle system and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and discloses a two-gear speed change electric drive axle system and a vehicle, the two-gear speed change electric drive axle system comprises a driving assembly, a cylindrical gear train speed reduction assembly, a planetary gear train two-gear speed change assembly and a bevel gear speed reduction reversing assembly, and the bevel gear speed reduction reversing assembly comprises a driving bevel gear and a driven bevel gear which are meshed with each other; the output end of the driving assembly is in transmission connection with the input end of the cylindrical gear train speed reduction assembly, the output end of the cylindrical gear train speed reduction assembly is in transmission connection with the input end of the planetary gear train two-gear speed change assembly, the output end of the planetary gear train two-gear speed change assembly is in transmission connection with the driving bevel gear, and the driven bevel gear is in transmission connection with the wheel assembly. The driving assembly, the cylindrical gear train speed reduction assembly, the planetary gear train two-gear speed change assembly and the bevel gear speed reduction reversing assembly are distributed in the length direction of the vehicle at intervals. The two-gear variable-speed electric drive axle system is small in arrangement difficulty and high in reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a two-speed variable speed electric drive axle system and a vehicle. Background Art

[0002] With the development of new energy vehicles, the working scenes and operating conditions in the field of commercial vehicles, especially heavy-duty commercial vehicles, are complex. They need to meet the high torque requirements when climbing with full load and the high efficiency requirements when cruising at high speed, so it is particularly important to study the electric drive axle system. The electric drive axle system is the drive system of the electric vehicle, and its performance directly affects the power and economy of the electric vehicle. Among them, the factors affecting the performance of the electric drive axle system mainly include three aspects: first, the power transmission path and distribution method of the electric drive axle system change with different configurations, thereby affecting the output of the electric drive axle system; second, the structure of the electric drive axle system will affect its own mass and volume, and then affect its performance; third, the control strategy of the electric drive axle system will affect the coordinated work of its components.

[0003] Currently, most existing electric drive axle systems use a transverse motor matched with a multi-speed gearbox, which can not only meet the demand for high torque, but also achieve high speed through high gear. However, the lateral space of the vehicle is limited, which makes the layout of the electric drive axle system difficult; for the longitudinal two-speed electric drive axle system, the transmission reliability needs to be improved. Utility Model Content

[0004] The utility model aims to provide a two-speed electric drive axle system and a vehicle to solve the above problems existing in the electric drive axle system in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A two-speed electric drive axle system includes a drive assembly, a cylindrical gear train reduction assembly, a planetary gear train two-speed change assembly and a bevel gear reduction reversing assembly, wherein the bevel gear reduction reversing assembly includes a meshing active bevel gear and a driven bevel gear;

[0007] The output end of the driving assembly is transmission-connected to the input end of the cylindrical gear train reduction assembly, the output end of the cylindrical gear train reduction assembly is transmission-connected to the input end of the planetary gear train two-speed transmission assembly, the output end of the planetary gear train two-speed transmission assembly is transmission-connected to the driving bevel gear, and the driven bevel gear is transmission-connected to the wheel assembly;

[0008] The driving assembly, the cylindrical gear train reduction assembly, the planetary gear train two-speed transmission assembly and the bevel gear reduction reversing assembly are spaced apart along the length direction of the vehicle.

[0009] As a preferred solution of the above-mentioned two-speed electric drive axle system, the planetary gear train two-speed transmission assembly includes a first sun gear, a first planetary gear, a first planetary carrier, a first ring gear, a first shift combination gear, a second shift combination gear and a gear sleeve; the first ring gear is rotatably connected to the frame, and the first shift combination gear is fixedly connected to the frame;

[0010] The output end of the cylindrical gear reduction assembly is connected to the axle of the first sun gear, the first planetary gear is fixedly arranged at the first end of the first planetary carrier and meshes with the first sun gear and the first ring gear, the second shift combination gear and the active bevel gear are spaced and fixedly arranged at the second end of the first planetary carrier, the gear sleeve can selectively mesh with the first shift combination gear or the second shift combination gear, and the first planetary carrier is rotatably connected to the frame.

[0011] As a preferred solution of the above-mentioned two-speed electric drive axle system, the two-speed electric drive axle system also includes a bearing, an outer ring of the bearing is fixedly connected to the frame, and an inner ring of the bearing is fixedly sleeved on the second end of the first planetary carrier and distributed between the second shift coupling gear and the active bevel gear.

[0012] As a preferred solution of the above two-speed electric drive axle system, the second gear shift combining gear and the active bevel gear are both fixedly integrated at the second end of the first planet carrier.

[0013] As a preferred solution of the above-mentioned two-speed electric drive axle system, the cylindrical gear train reduction assembly includes a cylindrical input gear and a cylindrical output gear that are transmission-connected, the axle of the cylindrical input gear is transmission-connected to the output end of the drive assembly, and the axle of the cylindrical output gear is transmission-connected to the axle of the first sun gear.

[0014] As a preferred solution of the above two-speed electric drive axle system, the bevel gear reduction reversing assembly further includes a differential, and the wheel assembly includes two transmission shafts;

[0015] The driven bevel gear is integrated into the housing of the differential and is rotationally connected to one of the transmission shafts;

[0016] The two output ends of the differential are arranged in one-to-one correspondence with the two transmission shafts and are transmission-connected.

[0017] As a preferred solution of the above-mentioned two-speed electric drive axle system, the differential includes two first transmission bevel gears and two second transmission bevel gears distributed in the housing, the two first transmission bevel gears are relatively distributed and both are fixedly connected to the housing, the two second transmission bevel gears are relatively distributed and both are rotatably connected to the housing, and the second transmission bevel gears are meshed with the two first transmission bevel gears;

[0018] The two second transmission bevel gears are arranged in one-to-one correspondence with the two transmission shafts, and the second transmission bevel gears are transmission-connected with the transmission shafts.

[0019] As a preferred solution of the above-mentioned two-speed variable speed electric drive axle system, the two-speed variable speed electric drive axle system further includes two planetary reduction assemblies, the wheel assembly further includes two wheels, and the two planetary reduction assemblies, the two transmission shafts and the two wheels are all arranged in one-to-one correspondence;

[0020] The planetary reduction assembly includes a second sun gear, a second planetary gear, a second planetary carrier and a second ring gear. The axle of the second sun gear is drivingly connected to the transmission shaft. The second planetary gear is fixedly arranged at the first end of the second planetary carrier and meshes with the second sun gear and the second ring gear. The axle of the wheel is drivingly connected to the second end of the second planetary carrier, and the second planetary carrier is rotatably connected to the frame.

[0021] As a preferred solution of the above-mentioned two-speed electric drive axle system, the drive assembly includes a drive motor, and the output shaft of the drive motor is drivingly connected to the input end of the cylindrical gear train reduction assembly.

[0022] A vehicle comprises the above-mentioned two-speed electric drive axle system.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a two-speed electric drive axle system and a vehicle. The two-speed electric drive axle system comprises a driving component, a cylindrical gear train reduction component, a planetary gear train two-speed speed change component and a bevel gear reduction reversing component, wherein the bevel gear reduction reversing component comprises a meshing active bevel gear and a driven bevel gear; the output end of the driving component is transmission-connected with the input end of the cylindrical gear train reduction component, the output end of the cylindrical gear train reduction component is transmission-connected with the input end of the planetary gear train two-speed speed change component, the output end of the planetary gear train two-speed speed change component is transmission-connected with the active bevel gear, and the driven bevel gear is transmission-connected with the wheel component; the driving component, the cylindrical gear train reduction component, the planetary gear train two-speed speed change component and the bevel gear reduction reversing component are spaced apart and distributed along the length direction of the vehicle.

[0025] The two-speed electric drive axle system is provided with a drive assembly, a cylindrical gear train reduction assembly, a planetary gear train two-speed shift assembly and a bevel gear reduction reversing assembly which are spaced and distributed along the length direction of the vehicle, and the power is transmitted to the wheel assembly through the meshing reversing of the active bevel gear and the driven bevel gear, so that the two-speed electric drive axle system forms a longitudinal electric drive axle system, thereby effectively reducing the layout difficulty compared with the prior art; secondly, since the reliability of the bevel gear at high speed is poor, the two-speed electric drive axle system is provided with a cylindrical gear train reduction assembly before the planetary gear train two-speed shift assembly, and the power output by the drive assembly is reduced by one level through the cylindrical gear train reduction assembly, thereby effectively improving the reliability of reversing and transmitting power by using the active bevel gear and the driven bevel gear, and effectively improving the service life of the active bevel gear and the driven bevel gear. Therefore, the two-speed electric drive axle system has low layout difficulty and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a two-speed variable speed electric drive axle system provided by a specific embodiment of the utility model;

[0027] Figure 2 This is part of the principle of the two-speed electric drive axle system provided by the specific embodiment of the utility model Figure 1 ;

[0028] Figure 3 This is part of the principle of the two-speed electric drive axle system provided by the specific embodiment of the utility model Figure 2 ;

[0029] Figure 4 This is part of the principle of the two-speed electric drive axle system provided by the specific embodiment of the utility model Figure 3 .

[0030] In the figure:

[0031] 1. Drive components;

[0032] 2. Cylindrical gear train reduction assembly; 21. Cylindrical input gear; 22. Cylindrical output gear;

[0033] 3. Two-speed transmission assembly of planetary gear train; 31. First sun gear; 32. First planetary gear; 33. First planet carrier; 34. First ring gear; 35. First shifting combined gear; 36. Second shifting combined gear; 37. Gear sleeve;

[0034] 4. bevel gear speed reduction reversing assembly; 41. driving bevel gear; 42. driven bevel gear; 43. differential; 431. housing; 432. first transmission bevel gear; 433. second transmission bevel gear;

[0035] 51. Drive shaft; 52. Wheel;

[0036] 6. Bearings;

[0037] 7. Planetary reduction assembly; 71. Second sun gear; 72. Second planetary gear; 73. Second planet carrier; 74. Second ring gear. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] The utility model provides a two-speed variable speed electric drive axle system, such as Figure 1As shown, the two-speed electric drive axle system includes a drive component 1, a cylindrical gear reduction component 2, a planetary gear two-speed shift component 3 and a bevel gear reduction reversing component 4, and the bevel gear reduction reversing component 4 includes a meshing active bevel gear 41 and a driven bevel gear 42; the output end of the drive component 1 is transmission-connected with the input end of the cylindrical gear reduction component 2, the output end of the cylindrical gear reduction component 2 is transmission-connected with the input end of the planetary gear two-speed shift component 3, the output end of the planetary gear two-speed shift component 3 is transmission-connected with the active bevel gear 41, and the driven bevel gear 42 is transmission-connected with the wheel component; the drive component 1, the cylindrical gear reduction component 2, the planetary gear two-speed shift component 3 and the bevel gear reduction reversing component 4 are spaced apart along the length direction of the vehicle.

[0043] The two-speed electric drive axle system is provided with a drive assembly 1, a cylindrical gear train reduction assembly 2, a planetary gear train two-speed shift assembly 3 and a bevel gear reduction reversing assembly 4 which are spaced apart along the length direction of the vehicle, and the power is transmitted to the wheel assembly through the meshing reversing of the active bevel gear 41 and the driven bevel gear 42, so that the two-speed electric drive axle system forms a longitudinal electric drive axle system, thereby effectively reducing the layout difficulty compared with the prior art; secondly, since the reliability of the bevel gear is poor at high speed, the two-speed electric drive axle system is provided with a cylindrical gear train reduction assembly 2 before the planetary gear train two-speed shift assembly 3, and the power output by the drive assembly 1 is reduced by one level through the cylindrical gear train reduction assembly 2, thereby effectively improving the reliability of the active bevel gear 41 and the driven bevel gear 42 for reversing and transmitting power, and effectively improving the service life of the active bevel gear 41 and the driven bevel gear 42. Therefore, the two-speed electric drive axle system has low layout difficulty and high reliability. It can be understood that the number of teeth of the driven bevel gear 42 is greater than the number of teeth of the driving bevel gear 41 .

[0044] Among them, Figure 1 and Figure 2 As shown, the planetary gear train two-speed transmission assembly 3 includes a first sun gear 31, a first planetary gear 32, a first planetary carrier 33, a first gear ring 34, a first shifting gear 35, a second shifting gear 36 and a gear sleeve 37; the first gear ring 34 is rotatably connected to the vehicle frame, and the first shifting gear 35 is fixedly connected to the vehicle frame; the output end of the cylindrical gear train reduction assembly 2 is connected to the axle of the first sun gear 31, the first planetary gear 32 is fixedly arranged at the first end of the first planetary carrier 33 and meshes with the first sun gear 31 and the first gear ring 34, the second shifting gear 36 and the active bevel gear 41 are spaced and fixedly arranged at the second end of the first planetary carrier 33, the gear sleeve 37 can selectively mesh with the first shifting gear 35 or the second shifting gear 36, and the first planetary carrier 33 is rotatably connected to the vehicle frame. It can be understood that the second shifting gear 36 is closer to the first shifting gear 35 relative to the active bevel gear 41.

[0045] When the gear sleeve 37 is meshed with the first shifting gear 35, the first gear ring 34 is fixed, the driving assembly 1 drives the first sun gear 31 to rotate around its own central axis, and the first sun gear 31 drives the first planetary carrier 33 to rotate around its own central axis, thereby driving the active bevel gear 41 and the driven bevel gear 42 to mesh for reversing and transmitting power.

[0046] When the gear sleeve 37 is meshed with the second shift engaging gear 36, the driving assembly 1 drives the first sun gear 31 to rotate around its own central axis, and the first sun gear 31 drives the first planetary carrier 33 and the first ring gear 34 to rotate synchronously around the central axis of the first planetary carrier 33, so as to drive the active bevel gear 41 and the driven bevel gear 42 to mesh for reversing and transmitting power.

[0047] In this embodiment, when the gear sleeve 37 is meshed with the first shifting gear 35, the output speed of the first planetary carrier 33 is low, and the vehicle runs in low gear; when the gear sleeve 37 is meshed with the second shifting gear 36, the output speed of the first planetary carrier 33 is high, and the vehicle runs in high gear. To achieve two-speed shifting. Among them, when the vehicle runs in low gear, the two-speed electric drive axle system can output large torque; when the vehicle runs in high gear, the first planetary carrier 33 and the first gear ring 34 rotate synchronously around the central axis of the first planetary carrier 33, and the transmission ratio of the planetary gear train two-speed shift assembly 3 is 1, so that the two-speed electric drive axle system can output a large speed. Secondly, the gear sleeve 37 is selectively meshed with the first shifting gear 35 or the second shifting gear 36 for shifting, so that compared with the synchronizer used in the prior art, the structure of the planetary gear train two-speed shift assembly 3 can be simplified.

[0048] Specifically, Figure 1 and Figure 2 As shown, the two-speed electric drive axle system also includes a bearing 6, the outer ring of the bearing 6 is fixedly connected to the frame, and the inner ring of the bearing 6 is fixedly sleeved on the second end of the first planetary carrier 33 and distributed between the second shift combination gear 36 and the active bevel gear 41. This arrangement is used to realize the rotational connection of the first planetary carrier 33 to the frame. Among them, the two-speed electric drive axle system is provided with a cylindrical gear train reduction assembly 2 before the planetary gear train two-speed shift assembly 3. At high speed, the power output by the drive assembly 1 is reduced by one level through the cylindrical gear train reduction assembly 2, which can also effectively improve the reliability and service life of the bearing 6.

[0049] Preferably, the second shift combination gear 36 and the driving bevel gear 41 are fixedly integrated at the second end of the first planet carrier 33. This can reduce the number of components, facilitate assembly, and improve the reliability of the second shift combination gear 36 and the driving bevel gear 41 being connected to the second end of the first planet carrier 33.

[0050] Specifically, Figure 1As shown, the cylindrical gear train reduction assembly 2 includes a cylindrical input gear 21 and a cylindrical output gear 22 which are in driving connection. The axle of the cylindrical input gear 21 is in driving connection with the output end of the drive assembly 1, and the axle of the cylindrical output gear 22 is in driving connection with the axle of the first sun gear 31. This arrangement enables the power of the drive assembly 1 to be transmitted to the planetary gear train two-speed transmission assembly 3, and enables one-stage reduction. It is understandable that the number of teeth of the cylindrical output gear 22 is greater than the number of teeth of the cylindrical input gear 21.

[0051] In this embodiment, the cylindrical input gear 21 and the cylindrical output gear 22 are exemplarily provided to mesh and transmit power. It is understandable that at least one cylindrical transmission gear can be adaptively provided between the cylindrical input gear 21 and the cylindrical output gear 22 according to actual working conditions.

[0052] Among them, Figure 1 and Figure 3 As shown, the bevel gear reduction reversing assembly 4 also includes a differential 43, and the wheel assembly includes two transmission shafts 51; the driven bevel gear 42 is integrated into the housing 431 of the differential 43 and is rotationally connected to one of the transmission shafts 51; the two output ends of the differential 43 are arranged one-to-one with the two transmission shafts 51 and are transmission-connected. Such an arrangement enables the driven bevel gear 42 to drive the two transmission shafts 51 to rotate around their own central axes respectively; secondly, integrating the driven bevel gear 42 into the housing 431 of the differential 43 can save space, reduce the number of components, and reduce the weight of the bevel gear reduction reversing assembly 4.

[0053] Specifically, Figure 1 and Figure 3 As shown, the differential 43 includes two first transmission bevel gears 432 and two second transmission bevel gears 433 distributed in a housing 431, the two first transmission bevel gears 432 are relatively distributed and fixedly connected to the housing 431, the two second transmission bevel gears 433 are relatively distributed and rotationally connected to the housing 431, and the second transmission bevel gears 433 are meshed with the two first transmission bevel gears 432; the two second transmission bevel gears 433 are arranged in a one-to-one correspondence with the two transmission shafts 51, and the second transmission bevel gears 433 are transmission-connected with the transmission shafts 51. It can be understood that the housing 431 of the differential 43 is rotationally connected with the two transmission shafts 51. Among them, the transmission shaft 51 is transmission-connected with the second transmission bevel gears 433 through a coupling and other structures.

[0054] Alternatively, if Figure 1 and Figure 4As shown, the two-speed electric drive axle system also includes two planetary reduction assemblies 7, and the wheel assembly also includes two wheels 52. The two planetary reduction assemblies 7, the two transmission shafts 51 and the two wheels 52 are all arranged in a one-to-one correspondence; the planetary reduction assembly 7 includes a second sun gear 71, a second planetary gear 72, a second planetary carrier 73 and a second gear ring 74. The axle of the second sun gear 71 is connected to the transmission shaft 51 in a transmission manner, the second planetary gear 72 is fixedly arranged at the first end of the second planetary carrier 73 and meshes with the second sun gear 71 and the second gear ring 74, the axle of the wheel 52 is connected to the second end of the second planetary carrier 73 in a transmission manner, and the second planetary carrier 73 is rotatably connected to the vehicle frame. The transmission shaft 51 drives the second sun gear 71 to rotate around its own central axis, drives the second planetary gear 72 to mesh with the second sun gear 71 and the second gear ring 74, thereby drives the second planetary carrier 73 to rotate around its own central axis, thereby drives the wheel 52 to rotate, and transmits power to the wheel 52. As an alternative, the planetary reduction assembly 7 can also be replaced by other types of reduction assemblies.

[0055] Wherein, the driving assembly 1 includes a driving motor, and the output shaft of the driving motor is drivingly connected to the input end of the cylindrical gear train reduction assembly 2. Specifically, the output shaft of the driving motor is drivingly connected to the axle of the cylindrical input gear 21 through a coupling and other structures. So as to drive the cylindrical input gear 21 to rotate around its own central axis. Wherein, the number of driving motors can be adaptively adjusted according to the actual working conditions. When the number of driving motors is two or more, one or more of them can be selectively used to drive the first sun gear 31 to rotate around its own central axis. Wherein, the specific structure of selectively driving the first sun gear 31 to rotate around its own central axis through one or more of them belongs to the prior art and will not be repeated here.

[0056] Specifically, in this embodiment, Figure 1 As shown, the two-speed electric drive axle system performs a first-stage deceleration through the cylindrical gear train reduction assembly 2, a second-stage deceleration through the planetary gear train two-speed transmission assembly 3, a third-stage deceleration through the meshing active bevel gear 41 and the driven bevel gear 42, and a fourth-stage deceleration through the planetary reduction assembly 7. When the vehicle is running in low gear, the two-speed electric drive axle system can output a large torque. When the vehicle is running in high gear, the transmission ratio of the planetary gear train two-speed transmission assembly 3 is 1, so that the two-speed electric drive axle system can output a large speed.

[0057] The utility model also provides a vehicle, comprising the above two-speed variable speed electric drive axle system. By adopting the above two-speed variable speed electric drive axle system, the design difficulty of the vehicle is reduced, and the working performance and reliability of the vehicle are improved.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Two-speed electric drive axle system, characterized in that: It comprises a driving assembly (1), a cylindrical gear train reduction assembly (2), a planetary gear train two-speed change assembly (3) and a bevel gear reduction reversing assembly (4), wherein the bevel gear reduction reversing assembly (4) comprises a meshing driving bevel gear (41) and a driven bevel gear (42); The output end of the driving assembly (1) is transmission-connected to the input end of the cylindrical gear train reduction assembly (2), the output end of the cylindrical gear train reduction assembly (2) is transmission-connected to the input end of the planetary gear train two-speed transmission assembly (3), the output end of the planetary gear train two-speed transmission assembly (3) is transmission-connected to the driving bevel gear (41), and the driven bevel gear (42) is transmission-connected to the wheel assembly; The drive assembly (1), the cylindrical gear train reduction assembly (2), the planetary gear train two-speed transmission assembly (3) and the bevel gear reduction reversing assembly (4) are distributed at intervals along the length direction of the vehicle.

2. The two-speed electric drive axle system according to claim 1, characterized in that: The planetary gear train two-speed transmission assembly (3) comprises a first sun gear (31), a first planetary gear (32), a first planet carrier (33), a first ring gear (34), a first shift-combining gear (35), a second shift-combining gear (36) and a gear sleeve (37); the first ring gear (34) is rotatably connected to the vehicle frame, and the first shift-combining gear (35) is fixedly connected to the vehicle frame; The output end of the cylindrical gear train reduction assembly (2) is connected to the axle of the first sun gear (31) in a transmission manner; the first planetary gear (32) is fixedly arranged at the first end of the first planetary carrier (33) and meshes with the first sun gear (31) and the first gear ring (34); the second shifting gear (36) and the active bevel gear (41) are spaced apart and fixedly arranged at the second end of the first planetary carrier (33); the gear sleeve (37) can selectively mesh with the first shifting gear (35) or the second shifting gear (36); and the first planetary carrier (33) is rotatably connected to the vehicle frame.

3. The two-speed electric drive axle system according to claim 2, characterized in that: The two-speed electric drive axle system further comprises a bearing (6), the outer ring of the bearing (6) being fixedly connected to the vehicle frame, and the inner ring of the bearing (6) being fixedly sleeved on the second end of the first planetary carrier (33) and distributed between the second gear shifting coupling gear (36) and the active bevel gear (41).

4. The two-speed electric drive axle system according to claim 2, characterized in that: The second shift combining gear (36) and the active bevel gear (41) are both fixedly integrated at the second end of the first planet carrier (33).

5. The two-speed electric drive axle system according to any one of claims 2 to 4, characterized in that: The cylindrical gear train reduction assembly (2) comprises a cylindrical input gear (21) and a cylindrical output gear (22) which are transmission-connected, the axle of the cylindrical input gear (21) being transmission-connected to the output end of the drive assembly (1), and the axle of the cylindrical output gear (22) being transmission-connected to the axle of the first sun gear (31).

6. The two-speed electric drive axle system according to any one of claims 1 to 4, characterized in that: The bevel gear speed reduction and reversing assembly (4) further includes a differential (43), and the wheel assembly includes two transmission shafts (51); The driven bevel gear (42) is integrated into the housing (431) of the differential (43) and is rotationally connected to the transmission shaft (51) thereof; The two output ends of the differential (43) are arranged in one-to-one correspondence with the two transmission shafts (51) and are transmission-connected.

7. The two-speed electric drive axle system according to claim 6, characterized in that: The differential (43) comprises two first transmission bevel gears (432) and two second transmission bevel gears (433) distributed in the housing (431), the two first transmission bevel gears (432) are relatively distributed and both are fixedly connected to the housing (431), the two second transmission bevel gears (433) are relatively distributed and both are rotationally connected to the housing (431), and the second transmission bevel gears (433) are meshed with the two first transmission bevel gears (432); The two second transmission bevel gears (433) are arranged in one-to-one correspondence with the two transmission shafts (51), and the second transmission bevel gears (433) are transmission-connected to the transmission shafts (51).

8. The two-speed electric drive axle system according to claim 6, characterized in that: The two-speed electric drive axle system further comprises two planetary reduction assemblies (7), the wheel assembly further comprises two wheels (52), and the two planetary reduction assemblies (7), the two transmission shafts (51) and the two wheels (52) are all arranged in a one-to-one correspondence; The planetary reduction assembly (7) comprises a second sun gear (71), a second planetary gear (72), a second planetary carrier (73) and a second ring gear (74); the axle of the second sun gear (71) is drivingly connected to the transmission shaft (51); the second planetary gear (72) is fixedly arranged at the first end of the second planetary carrier (73) and meshes with the second sun gear (71) and the second ring gear (74); the axle of the wheel (52) is drivingly connected to the second end of the second planetary carrier (73); and the second planetary carrier (73) is rotatably connected to the vehicle frame.

9. The two-speed electric drive axle system according to any one of claims 1 to 4, characterized in that: The driving assembly (1) comprises a driving motor, the output shaft of which is drivingly connected to the input end of the cylindrical gear train reduction assembly (2).

10. A vehicle, characterized in that It comprises the two-speed electric drive axle system as described in any one of claims 1 to 9.

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