Drive axle and vehicle with same

Abstract

The utility model discloses a drive axle and a vehicle with the same. A drive axle belongs to the technical field of vehicles and comprises a planetary gear mechanism, an intermediate shaft, a first power mechanism and a second power mechanism, the planetary gear mechanism is provided with a first input end, a second input end and an output end, the output end is suitable for being in transmission connection with a wheel end, and the intermediate shaft is in transmission connection with the first input end. The first power mechanism is selectively in transmission connection with the intermediate shaft and the second input end, the second power mechanism is selectively in transmission connection with the intermediate shaft and the second input end, power transmission interruption of the drive axle can be avoided, the product competitiveness of the drive axle is improved, and meanwhile the first power mechanism and the second power mechanism are symmetrically arranged relative to the intermediate shaft. Therefore, the stability of the drive axle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, specifically, relate to a drive axle and vehicle with it. BACKGROUND

[0002] The drive axle is used for transmitting power to the wheel end of the vehicle to realize the running of the vehicle. In the related art, the drive axle will have power interruption during gear shifting, which affects the control experience of the vehicle and increases the risk of hill coasting. SUMMARY

[0003] The utility model aims at at least one of the above technical problems in the prior art. To this end, the utility model provides a drive axle, which can avoid power transmission interruption and improve the stability of the drive axle.

[0004] The utility model further provides a vehicle with the drive axle.

[0005] According to the drive axle of the utility model embodiment, the planetary gear mechanism has a first input end, a second input end and an output end, the output end is suitable for driving connection with the wheel end, the intermediate shaft is drivingly connected with the first input end, the first power mechanism is selectively drivingly connected with the intermediate shaft and the second input end, the second power mechanism is selectively drivingly connected with the intermediate shaft and the second input end, and the first power mechanism and the second power mechanism are symmetrically arranged relative to the intermediate shaft.

[0006] According to the drive axle of the utility model embodiment, the first power mechanism and the second power mechanism are selectively drivingly connected with the intermediate shaft and the second input end, the planetary gear mechanism can couple the power of the first power mechanism and the second power mechanism, and power transmission interruption is avoided to improve the product competitiveness of the drive axle. At the same time, the first power mechanism and the second power mechanism are symmetrically arranged relative to the intermediate shaft, so as to improve the stability of the drive axle.

[0007] According to some embodiments of the utility model, the planetary gear mechanism comprises a sun gear, the sun gear is fixedly arranged on the intermediate shaft, the sun gear is the first input end, a ring gear, the ring gear is fixedly arranged on the housing of the drive axle, a planetary gear, the planetary gear is engaged between the sun gear and the ring gear, a planet carrier, the planetary gear is rotatably arranged on the planet carrier, the planet carrier forms the second input end at one end of the planetary gear in the axial direction, and the planet carrier forms the output end at the other end of the planetary gear in the axial direction.

[0008] According to some embodiments of the present invention, the first power mechanism includes: a first drive motor and a first transmission assembly, wherein the first drive motor is selectively connected to the intermediate shaft and the second input end via the first transmission assembly; the second power mechanism includes: a second drive motor and a second transmission assembly, wherein the second drive motor is selectively connected to the intermediate shaft and the second input end via the second transmission assembly.

[0009] According to some embodiments of this utility model, a first intermediate gear is fixedly mounted on the intermediate shaft, and a second intermediate gear is also sleeved on the intermediate shaft. The second intermediate gear is connected to the second input end. The first transmission assembly includes: a first output shaft, a first output gear, a second output gear, and a first shift synchronizer. The first output shaft is driven by the first drive motor. The first output gear and the second output gear are both sleeved on the first output shaft. The first shift synchronizer is fixed on the first output shaft and can selectively engage with the first output gear and the second output gear. The second transmission assembly includes: a second output shaft, a third output gear, a fourth output gear, and a second shift synchronizer. The second output shaft is driven by the second drive motor. The third output gear and the fourth output gear are both sleeved on the second output shaft. The second shift synchronizer is fixed on the second output shaft and can selectively engage with the third output gear and the fourth output gear. The first output gear and the third output gear mesh with the first intermediate gear, and the second output gear and the fourth output gear mesh with the second intermediate gear.

[0010] According to some embodiments of the utility model, first transmission assembly still include: first connecting axle, first connecting gear, second connecting gear, first input gear, second input gear and third gear synchronizer, first connecting gear and second connecting gear all are fixed in first connecting axle, first input gear and second input gear all are covered in first output axle, third gear synchronizer is fixed in first output axle, third gear synchronizer can select and combine with first input gear, second input gear, first input gear is engaged with first connecting gear, second input gear is engaged with second connecting gear, first drive motor is connected through first connecting axle with first output axle transmission;Second transmission assembly still include: second connecting axle, third connecting gear, fourth connecting gear, third input gear, fourth input gear and fourth gear synchronizer, third connecting gear and fourth connecting gear all are fixed in second connecting axle, third input gear and fourth input gear all are covered in second output axle, fourth gear synchronizer is fixed in second output axle, fourth gear synchronizer can select and combine with third input gear, fourth input gear, third input gear is engaged with third connecting gear, fourth input gear is engaged with fourth connecting gear, second drive motor is connected through second connecting axle with second output axle transmission.

[0011] According to some embodiments of the utility model, first drive motor has first motor shaft, first motor shaft is fixed with first motor gear, second drive motor has second motor shaft, second motor shaft is fixed with second motor gear;First transmission assembly still include: fifth connecting gear, fifth connecting gear is fixed in first connecting axle, first motor gear is engaged with fifth connecting gear;Second transmission assembly still include: sixth connecting gear, sixth connecting gear is fixed in second connecting axle, second motor gear is engaged with sixth connecting gear.

[0012] According to some embodiments of the utility model, the transmission ratio of the first transmission assembly and the second transmission assembly is different.

[0013] According to some embodiments of the utility model, the drive axle further comprises: a differential, the output end is adapted to be connected with the wheel end through the differential.

[0014] According to another aspect of the utility model, the vehicle comprises the drive axle.

[0015] According to the vehicle of the embodiment of the utility model, the first power mechanism and the second power mechanism of the drive axle are selectively in transmission connection with the intermediate shaft and the second input end, the planetary gear mechanism can couple the power of the first power mechanism and the second power mechanism, and power transmission interruption is avoided, so that the product competitiveness of the drive axle is improved, and meanwhile, the first power mechanism and the second power mechanism are symmetrically arranged relative to the intermediate shaft, so that the stability of the vehicle is improved.

[0016] According to some embodiments of the utility model, in the front-rear direction of the vehicle, the first power mechanism and the second power mechanism are symmetrically arranged relative to the intermediate shaft.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be known by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the drive axle according to the embodiment of the utility model.

[0019] Reference numerals:

[0020] First power mechanism 1;First drive motor 11;First motor shaft 111;First motor gear 1111;

[0021] First transmission assembly 12;First output shaft 121;First output gear 1211;Second output gear 1212;First shift synchronizer 1213;First tooth hub 12131;First combination tooth sleeve 12132;First input gear 1214;Second input gear 1215;Third shift synchronizer 1216;Third tooth hub 12161;Third combination tooth sleeve 12162;

[0022] First connecting shaft 122;First connecting gear 1221;Second connecting gear 1222;Fifth connecting gear 1223;

[0023] Second power mechanism 2;Second drive motor 21;Second motor shaft 211;Second motor gear 2111;

[0024] Second transmission assembly 22;Second output shaft 221;Third output gear 2211;Fourth output gear 2212;Second shift synchronizer 2213;Second tooth hub 22131;Second combination tooth sleeve 22132;Third input gear 2214;Fourth input gear 2215;Fourth shift synchronizer 2216;Fourth tooth hub 22161;Fourth combination tooth sleeve 22162;

[0025] Second connecting shaft 222;Third connecting gear 2221;Fourth connecting gear 2222;Sixth connecting gear 2223;

[0026] planetary gear mechanism 3; sun gear 31; first input end 31a; ring gear 32; planetary gear 33; carrier 34; second input end 34a; output end 34b;

[0027] intermediate shaft 4; first intermediate gear 41; second intermediate gear 42;

[0028] housing 5;

[0029] differential 6; operating mechanism 61; differential lock sleeve 62;

[0030] left half shaft 71; right half shaft 72;

[0031] drive axle 10. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the present application, it is to be understood that the terms "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0034] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The driving axle 10 and the vehicle having the same according to the embodiments of the present application are described in detail below with reference to the drawings.

[0037] Referring to Figure 1 As shown in the drawings, the driving axle 10 according to the embodiments of the present application comprises a planetary gear mechanism 3, an intermediate shaft 4, a first power mechanism 1 and a second power mechanism 2, the planetary gear mechanism 3 has a first input end 31a, a second input end 34a and an output end 34b, the output end 34b is adapted to be in driving connection with a wheel end, the intermediate shaft 4 is in driving connection with the first input end 31a, the first power mechanism 1 is selectively in driving connection with the intermediate shaft 4 and the second input end 34a, the second power mechanism 2 is selectively in driving connection with the intermediate shaft 4 and the second input end 34a, wherein the first power mechanism 1 and the second power mechanism 2 are symmetrically arranged relative to the intermediate shaft 4.

[0038] Specifically, the driving axle 10 can be used in a vehicle, the first input end 31a and the second input end 34a of the planetary gear mechanism 3 can receive power output by the first power mechanism 1 and the second power mechanism 2, and the output end 34b of the planetary gear mechanism 3 can output power to the wheel end of the vehicle to drive the vehicle to run. The transmission ratio from the first input end 31a to the output end 34b is different from the transmission ratio from the second input end 34a to the output end 34b, and the driving connection relationship between the first power mechanism 1, the second power mechanism 2 and the first input end 31a, the second input end 34a can be adjusted according to the working condition of the whole vehicle, so that the first power mechanism 1 and the second power mechanism 2 work in the high efficiency area.

[0039] The intermediate shaft 4 can be arranged at the middle position of the driving axle 10, and the axis of the intermediate shaft 4 can be the central axis of the driving axle 10, and the first power mechanism 1 and the second power mechanism 2 are symmetrically arranged relative to the intermediate shaft 4, so that the mass distribution of the driving axle 10 is uniform and reasonable, and the center of mass of the driving axle 10 can be on the central axis of the driving axle 10, so as to improve the stability of the driving axle 10.

[0040] The intermediate shaft 4 is in driving connection with the first input end 31a, the first power mechanism 1 is selectively in driving connection with the intermediate shaft 4 and the second input end 34a, and the second power mechanism 2 is selectively in driving connection with the intermediate shaft 4 and the second input end 34a, that is, the power output by the first power mechanism 1 can be transmitted to the first input end 31a of the planetary gear mechanism 3 through the intermediate shaft 4, and then transmitted to the wheel end through the output end 34b of the planetary gear mechanism 3, or the power output by the first power mechanism 1 is directly transmitted to the second input end 34a of the planetary gear mechanism 3, and then transmitted to the wheel end through the output end 34b of the planetary gear mechanism 3.

[0041] Likewise, the power output by the second power mechanism 2 can be transmitted to the first input end 31a of the planetary gear mechanism 3 through the intermediate shaft 4, and then transmitted to the wheel end through the output end 34b of the planetary gear mechanism 3, or the power output by the second power mechanism 2 can be directly transmitted to the second input end 34a of the planetary gear mechanism 3, and then transmitted to the wheel end through the output end 34b of the planetary gear mechanism 3.

[0042] The power output by the first power mechanism 1 and the second power mechanism 2 can be coupled at the planetary gear mechanism 3, that is, the first power mechanism 1 and the second power mechanism 2 can jointly drive the planetary gear mechanism 3 to improve the power output by the output end 34b of the planetary gear mechanism 3 to the wheel end, and when the drive axle 10 needs to adjust the transmission ratio, the first power mechanism 1 and the second power mechanism 2 can be alternately shifted to keep at least one of the first power mechanism 1 and the second power mechanism 2 in transmission connection with the planetary gear mechanism 3 at all times, avoiding power transmission interruption during shifting, improving shifting quality, helping to improve the service life of the shifting element, and avoiding the risk of hill start.

[0043] According to the drive axle 10 of the embodiment of the utility model, the first power mechanism 1 and the second power mechanism 2 are selectively in transmission connection with the intermediate shaft 4 and the second input end 34a, the planetary gear mechanism 3 can couple the power of the first power mechanism 1 and the second power mechanism 2 and avoid power transmission interruption to improve the product competitiveness of the drive axle 10, and meanwhile, the first power mechanism 1 and the second power mechanism 2 are symmetrically arranged relative to the intermediate shaft 4, thereby being beneficial to improving the stability of the drive axle 10.

[0044] In some embodiments of the utility model, referring to Figure 1 As shown in the figure, the planetary gear mechanism 3 comprises a sun gear 31, a ring gear 32, a planet gear 33 and a planet carrier 34, the sun gear 31 is fixedly arranged on the intermediate shaft 4, the sun gear 31 is the first input end 31a, the ring gear 32 is fixedly arranged on the housing 5 of the drive axle 10, the planet gear 33 is engaged between the sun gear 31 and the ring gear 32, the planet gear 33 is rotatably arranged on the planet carrier 34, the planet carrier 34 forms the second input end 34a at one axial end of the planet gear 33, and the planet carrier 34 forms the output end 34b at the other axial end of the planet gear 33.

[0045] Specifically, the sun gear 31 is fixed to the intermediate shaft 4, and the sun gear 31 can rotate synchronously with the intermediate shaft 4; when the first power mechanism 1 and the second power mechanism 2 are in transmission connection with the intermediate shaft 4, the first power mechanism 1 and the second power mechanism 2 can drive the intermediate shaft 4 to rotate the sun gear 31, so as to transmit power to the first input end 31a; the power of the sun gear 31 is transmitted to the wheel end by the output end 34b of the planet carrier 34 after being reduced and increased in torque by the planetary gear 33; at this time, the transmission ratio of the first input end 31a to the output end 34b of the planetary gear mechanism 3 is greater than 1, so as to realize a larger transmission ratio.

[0046] When the first power mechanism 1 and the second power mechanism 2 are in transmission connection with the second input end 34a, the first power mechanism 1 and the second power mechanism 2 can drive the second input end 34a of the planet carrier 34 to rotate, and the output end 34b of the planet carrier 34 transmits power to the wheel end; at this time, the transmission ratio of the first input end 31a to the output end 34b of the planetary gear mechanism 3 is equal to 1, so as to realize a smaller transmission ratio.

[0047] In the above embodiment, the second input end 34a and the output end 34b of the planetary gear 33 are located at the two axial ends of the planetary gear 33, so as to facilitate the transmission connection of the second input end 34a with the first power mechanism 1 and the second power mechanism 2 and the transmission connection of the output end 34b with the wheel end, and the structure of the planetary gear mechanism 3 is compact, convenient to arrange, and not easy to interfere with other components; at the same time, the transmission ratio of the first input end 31a to the output end 34b is different from the transmission ratio of the second input end 34a to the output end 34b, so as to increase the torque and the rotation speed range that can be output by the drive axle 10.

[0048] In some embodiments of the utility model, refer to Figure 1 As shown in the figure, the first power mechanism 1 comprises a first driving motor 11 and a first transmission assembly 12, and the first driving motor 11 is selectively in transmission connection with the intermediate shaft 4 and the second input end 34a through the first transmission assembly 12; the second power mechanism 2 comprises a second driving motor 21 and a second transmission assembly 22, and the second driving motor 21 is selectively in transmission connection with the intermediate shaft 4 and the second input end 34a through the second transmission assembly 22.

[0049] Specifically, the first driving motor 11 can be fixed to the housing 5 of the drive axle 10 through bolts, the transmission ratio of the first transmission assembly 12 can be adjusted so that the first driving motor 11 works in the high-efficiency zone, and the power output by the first driving motor 11 can be transmitted to the intermediate shaft 4 or the second input end 34a after being reduced and increased in torque by the first transmission assembly 12. Similarly, the second driving motor 21 can be fixed to the housing 5 of the drive axle 10 through bolts, the transmission ratio of the second transmission assembly 22 can be adjusted so that the second driving motor 21 works in the high-efficiency zone, and the power output by the second driving motor 21 can be transmitted to the intermediate shaft 4 or the second input end 34a after being reduced and increased in torque by the second transmission assembly 22. The drive axle 10 can be an electric drive axle, which has a small occupied space and is economical.

[0050] In some embodiments of the utility model, the first power mechanism 1 includes: a first engine and a first transmission assembly 12, the first engine is selectively connected with the intermediate shaft 4 and the second input end 34a through the first transmission assembly 12. The second power mechanism 2 includes: a second engine and a second transmission assembly 22, the second driving motor 21 is selectively connected with the intermediate shaft 4 and the second input end 34a through the second transmission assembly 22.

[0051] In some embodiments of the utility model, referring to Figure 1 As shown in the figure, the intermediate shaft 4 is fixedly provided with a first intermediate gear 41, and the intermediate shaft 4 is further sleeved with a second intermediate gear 42, and the second intermediate gear 42 is connected with the second input end 34a. The first transmission assembly 12 includes a first output shaft 121, a first output gear 1211, a second output gear 1212 and a first shift synchronizer 1213, the first output shaft 121 is connected with the first driving motor 11, the first output gear 1211 and the second output gear 1212 are sleeved on the first output shaft 121, the first shift synchronizer 1213 is fixedly arranged on the first output shaft 121, and the first shift synchronizer 1213 is selectively combined with the first output gear 1211 and the second output gear 1212. The second transmission assembly 22 includes a second output shaft 221, a third output gear 2211, a fourth output gear 2212 and a second shift synchronizer 2213, the second output shaft 221 is connected with the second driving motor 21, the third output gear 2211 and the fourth output gear 2212 are sleeved on the second output shaft 221, the second shift synchronizer 2213 is fixedly arranged on the second output shaft 221, and the second shift synchronizer 2213 is selectively combined with the third output gear 2211 and the fourth output gear 2212. Wherein, the first output gear 1211 and the third output gear 2211 are engaged with the first intermediate gear 41, and the second output gear 1212 and the fourth output gear 2212 are engaged with the second intermediate gear 42.

[0052] Specifically, the first intermediate gear 41 is fixed to the intermediate shaft 4, and when the first intermediate gear 41 is driven, the first intermediate gear 41 can drive the intermediate shaft 4 and the sun gear 31 to rotate synchronously. The second intermediate gear 42 is connected to the intermediate shaft 4 through a bearing, and the second intermediate gear 42 can rotate relative to the intermediate shaft 4. The second intermediate gear 42 is connected to the second input end 34a, and when the second intermediate gear 42 is driven, the second intermediate gear 42 can drive the planet carrier 34 to rotate synchronously.

[0053] In the first transmission assembly 12, the first output shaft 121 is mounted in the housing 5 of the drive axle 10 through a corresponding bearing, and the first output shaft 121 is directly or indirectly in transmission connection with the first drive motor 11. The first output gear 1211 and the second output gear 1212 are connected to the first output shaft 121 through corresponding bearings, and the first output gear 1211 and the second output gear 1212 can rotate relative to the first output shaft 121. The first output gear 1211 is in mesh with the first intermediate gear 41, and the second output gear 1212 is in mesh with the second intermediate gear 42. The first shift synchronizer 1213 is fixed to the first output shaft 121, and the first shift synchronizer 1213 rotates synchronously with the first output shaft 121. The first shift synchronizer 1213 can be selectively combined with the first output gear 1211 and the second output gear 1212, so as to realize gear shifting of the first transmission assembly 12.

[0054] It can be understood that the first drive motor 11 can drive the first output shaft 121 to rotate. When the first shift synchronizer 1213 is separated from the first output gear 1211 and the second output gear 1212, the first output shaft 121 idles, that is, the first transmission assembly 12 does not transmit power to the planetary gear mechanism 3. When the first shift synchronizer 1213 is combined with the first output gear 1211, the first output shaft 121, the first shift synchronizer 1213, and the first output gear 1211 rotate synchronously, and the first output gear 1211 drives the first intermediate gear 41 in mesh therewith to rotate, so that the first intermediate gear 41 drives the sun gear 31 through the intermediate shaft 4 to rotate, that is, the first transmission assembly 12 transmits power to the first input end 31a of the planetary gear mechanism 3. When the first shift synchronizer 1213 is combined with the second output gear 1212, the first output shaft 121, the first shift synchronizer 1213, and the second output gear 1212 rotate synchronously, and the second output gear 1212 drives the second intermediate gear 42 in mesh therewith to rotate, so that the second intermediate gear 42 drives the planet carrier 34 to rotate, that is, the first transmission assembly 12 transmits power to the second input end 34a of the planetary gear mechanism 3.

[0055] It should be noted that the first shift synchronizer 1213 can include a first gear hub 12131 and a first engagement gear sleeve 12132, the first gear hub 12131 is hard connected with the first output shaft 121, the first engagement gear sleeve 12132 is movably connected with the first gear hub 12131, and the first engagement gear sleeve 12132 is selectively engaged with the first output gear 1211 and the second output gear 1212.

[0056] The second transmission assembly 22 is configured similarly to the first transmission assembly 12, in the second transmission assembly 22, the second output shaft 221 is installed in the housing 5 of the drive axle 10 through a corresponding bearing, the second output shaft 221 is directly or indirectly drivingly connected with the second drive motor 21, the third output gear 2211 and the fourth output gear 2212 are both connected on the second output shaft 221 through corresponding bearings, the third output gear 2211 and the fourth output gear 2212 are both rotatable relative to the second output shaft 221, the third output gear 2211 is engaged with the first intermediate gear 41, the fourth output gear 2212 is engaged with the second intermediate gear 42, the second shift synchronizer 2213 is fixedly arranged on the second output shaft 221, the second shift synchronizer 2213 rotates synchronously with the second output shaft 221, and the second shift synchronizer 2213 is selectively engaged with the third output gear 2211 and the fourth output gear 2212, so as to realize gear shifting of the second transmission assembly 22.

[0057] It can be understood that the second drive motor 21 can drive the second output shaft 221 to rotate, when the second shift synchronizer 2213 is separated from the third output gear 2211 and the fourth output gear 2212, the second output shaft 221 idles, that is, the second transmission assembly 22 does not transmit power to the planetary gear mechanism 3. When the second shift synchronizer 2213 is engaged with the third output gear 2211, the second output shaft 221, the second shift synchronizer 2213 and the third output gear 2211 rotate synchronously, the third output gear 2211 drives the first intermediate gear 41 engaged therewith to rotate, so that the first intermediate gear 41 drives the sun gear 31 through the intermediate shaft 4 to rotate, that is, the second transmission assembly 22 transmits power to the first input end 31a of the planetary gear mechanism 3. When the second shift synchronizer 2213 is engaged with the fourth output gear 2212, the second output shaft 221, the second shift synchronizer 2213 and the fourth output gear 2212 rotate synchronously, the fourth output gear 2212 drives the second intermediate gear 42 engaged therewith to rotate, so that the second intermediate gear 42 drives the planet carrier 34 to rotate, that is, the second transmission assembly 22 transmits power to the second input end 34a of the planetary gear mechanism 3.

[0058] It should be noted that the second shift synchronizer 2213 can include a second gear hub 22131 hard connected with the second output shaft 221, and a second coupling gear sleeve 22132 movably connected with the second gear hub 22131, and the second coupling gear sleeve 22132 is selectively coupled with the third output gear 2211 and the fourth output gear 2212.

[0059] In some embodiments of the utility model, refer to Figure 1 As shown in the figure, the first transmission assembly 12 further includes a first connecting shaft 122, a first connecting gear 1221, a second connecting gear 1222, a first input gear 1214, a second input gear 1215 and a third shift synchronizer 1216, the first connecting gear 1221 and the second connecting gear 1222 are both fixedly arranged on the first connecting shaft 122, the first input gear 1214 and the second input gear 1215 are both sleeved on the first output shaft 121, the third shift synchronizer 1216 is fixedly arranged on the first output shaft 121, the third shift synchronizer 1216 is selectively coupled with the first input gear 1214 and the second input gear 1215, the first input gear 1214 is engaged with the first connecting gear 1221, the second input gear 1215 is engaged with the second connecting gear 1222, and the first drive motor 11 is drivingly connected with the first output shaft 121 through the first connecting shaft 122.

[0060] The second transmission assembly 22 further includes a second connecting shaft 222, a third connecting gear 2221, a fourth connecting gear 2222, a third input gear 2214, a fourth input gear 2215 and a fourth shift synchronizer 2216, the third connecting gear 2221 and the fourth connecting gear 2222 are both fixedly arranged on the second connecting shaft 222, the third input gear 2214 and the fourth input gear 2215 are both sleeved on the second output shaft 221, the fourth shift synchronizer 2216 is fixedly arranged on the second output shaft 221, the fourth shift synchronizer 2216 is selectively coupled with the third input gear 2214 and the fourth input gear 2215, the third input gear 2214 is engaged with the third connecting gear 2221, the fourth input gear 2215 is engaged with the fourth connecting gear 2222, and the second drive motor 21 is drivingly connected with the second output shaft 221 through the second connecting shaft 222.

[0061] Specifically, in the first transmission assembly 12, the first connecting shaft 122 is mounted in the housing 5 of the drive axle 10 through corresponding bearings, the first connecting shaft 122 is directly or indirectly in driving connection with the first driving motor 11, the first connecting gear 1221 and the second connecting gear 1222 are both fixedly arranged on the first connecting shaft 122, the first connecting gear 1221, the second connecting gear 1222 and the first connecting shaft 122 are synchronously rotatable, the first input gear 1214 and the second input gear 1215 are both sleeved on the first output shaft 121 through corresponding bearing sleeves, the first input gear 1214 and the second input gear 1215 are rotatable relative to the first output shaft 121, the first input gear 1214 is in meshing connection with the first connecting gear 1221, the first connecting gear 1221 can drive the first input gear 1214 to rotate, the second input gear 1215 is in meshing connection with the second connecting gear 1222, the second connecting gear 1222 can drive the second input gear 1215 to rotate, the third shift synchronizer 1216 is fixedly arranged on the first output shaft 121, the third shift synchronizer 1216 is synchronously rotatable with the first output shaft 121, the third shift synchronizer 1216 is selectively combined with the first input gear 1214 and the second input gear 1215, so as to realize more gear shifting of the first transmission assembly 12.

[0062] It can be understood that the first driving motor 11 can drive the first connecting shaft 122 to rotate, the first connecting shaft 122 drives the first connecting gear 1221 and the second connecting gear 1222 to synchronously rotate, the first connecting gear 1221 drives the first input gear 1214 in meshing connection therewith to rotate, the second connecting gear 1222 drives the second input gear 1215 in meshing connection therewith to rotate. When the third shift synchronizer 1216 is separated from the first input gear 1214 and the second input gear 1215, the first input gear 1214 and the second input gear 1215 are idling relative to the first output shaft 121. When the third shift synchronizer 1216 is combined with the first input gear 1214, the first input gear 1214 drives the first output shaft 121 to synchronously rotate through the third shift synchronizer 1216, so as to realize that the first driving motor 11 is in driving connection with the first output shaft 121 through the first connecting shaft 122. When the third shift synchronizer 1216 is combined with the second input gear 1215, the second input gear 1215 drives the first output shaft 121 to synchronously rotate through the third shift synchronizer 1216, so as to realize that the first driving motor 11 is in driving connection with the first output shaft 121 through the first connecting shaft 122.

[0063] It should be noted that the third shift synchronizer 1216 can include a third gear hub 12161 and a third coupling gear sleeve 12162, the third gear hub 12161 is hard connected with the first output shaft 121, and the third coupling gear sleeve 12162 is movably connected with the third gear hub 12161, and the third coupling gear sleeve 12162 is selectively coupled with the first input gear 1214 and the second input gear 1215.

[0064] In some embodiments, the transmission ratio of the first connecting gear 1221 and the first input gear 1214 is different from the transmission ratio of the second connecting gear 1222 and the second input gear 1215, so as to achieve different transmission ratios when the third shift synchronizer 1216 is coupled with the first input gear 1214 and the second input gear 1215, for example, as shown in Figure 1 It is shown that the first connecting gear 1221 is a large gear, and the second connecting gear 1222 is a small gear, and the number of teeth of the first connecting gear 1221 is greater than the number of teeth of the second connecting gear 1222.

[0065] In some embodiments not shown in other figures, the transmission ratio of the first connecting gear 1221 and the first input gear 1214 is the same as the transmission ratio of the second connecting gear 1222 and the second input gear 1215, so as to achieve the redundancy of the power transmission path of the first transmission assembly 12, when the engagement of the first connecting gear 1221 and the first input gear 1214 fails, the power can be transmitted through the second connecting gear 1222 and the second input gear 1215, and the reliability of the first transmission assembly 12 is improved.

[0066] The second transmission assembly 22 is similar to the first transmission assembly 12 in structure. In the second transmission assembly 22, the second connecting shaft 222 is mounted in the housing 5 of the drive axle 10 through a corresponding bearing, the second connecting shaft 222 is directly or indirectly in driving connection with the second driving motor 21, the third connecting gear 2221 and the fourth connecting gear 2222 are both fixedly arranged on the second connecting shaft 222, the third connecting gear 2221, the fourth connecting gear 2222 and the second connecting shaft 222 are synchronously rotatable, the third input gear 2214 and the fourth input gear 2215 are both sleeved on the second output shaft 221 through corresponding bearing sleeves, the third input gear 2214 and the fourth input gear 2215 are rotatable relative to the second output shaft 221, the third input gear 2214 is in meshing connection with the third connecting gear 2221, the third connecting gear 2221 can drive the third input gear 2214 to rotate, the fourth input gear 2215 is in meshing connection with the fourth connecting gear 2222, the fourth connecting gear 2222 can drive the fourth input gear 2215 to rotate, the fourth shift synchronizer 2216 is fixedly arranged on the second output shaft 221, the fourth shift synchronizer 2216 is synchronously rotatable with the second output shaft 221, and the fourth shift synchronizer 2216 is selectively combined with the third input gear 2214 and the fourth input gear 2215, so as to realize more gear shifting of the second transmission assembly 22.

[0067] It can be understood that the second driving motor 21 can drive the second connecting shaft 222 to rotate, the second connecting shaft 222 drives the third connecting gear 2221 and the fourth connecting gear 2222 to synchronously rotate, the third connecting gear 2221 drives the third input gear 2214 in meshing connection therewith to rotate, and the fourth connecting gear 2222 drives the fourth input gear 2215 in meshing connection therewith to rotate. When the fourth shift synchronizer 2216 is separated from the third input gear 2214 and the fourth input gear 2215, the third input gear 2214 and the fourth input gear 2215 are idling relative to the second output shaft 221. When the fourth shift synchronizer 2216 is combined with the third input gear 2214, the third input gear 2214 drives the second output shaft 221 to synchronously rotate through the fourth shift synchronizer 2216, so as to realize driving connection between the second driving motor 21 and the second output shaft 221 through the second connecting shaft 222. When the fourth shift synchronizer 2216 is combined with the fourth input gear 2215, the fourth input gear 2215 drives the second output shaft 221 to synchronously rotate through the fourth shift synchronizer 2216, so as to realize driving connection between the second driving motor 21 and the second output shaft 221 through the second connecting shaft 222.

[0068] It should be noted that the fourth shift synchronizer 2216 can include a fourth gear hub 22161 and a fourth coupling gear sleeve 22162, the fourth gear hub 22161 is hard connected with the second output shaft 221, and the fourth coupling gear sleeve 22162 is movably connected with the third gear hub 12161, and the fourth coupling gear sleeve 22162 is selectively coupled with the third input gear 2214 and the fourth input gear 2215.

[0069] In some embodiments, the transmission ratio of the third connecting gear 2221 and the third input gear 2214 is different from the transmission ratio of the fourth connecting gear 2222 and the fourth input gear 2215, so as to achieve different transmission ratios when the fourth shift synchronizer 2216 is coupled with the third input gear 2214 and the fourth input gear 2215, for example, as shown in the figure, the third connecting gear 2221 is a large gear, and the fourth connecting gear 2222 is a small gear, and the number of teeth of the third connecting gear 2221 is greater than the number of teeth of the fourth connecting gear 2222. Figure 1

[0070] In some embodiments not shown in other figures, the transmission ratio of the third connecting gear 2221 and the third input gear 2214 is the same as the transmission ratio of the fourth connecting gear 2222 and the fourth input gear 2215, so as to realize the redundancy of the power transmission path of the second transmission assembly 22, and when the meshing of the third connecting gear 2221 and the third input gear 2214 fails, power can be transmitted through the fourth connecting gear 2222 and the fourth input gear 2215, thereby improving the reliability of the second transmission assembly 22.

[0071] In some embodiments of the utility model, the first drive motor 11 has a first motor shaft 111, and the first motor shaft 111 is fixedly provided with a first motor gear 1111, and the second drive motor 21 has a second motor shaft 211, and the second motor shaft 211 is fixedly provided with a second motor gear 2111. The first transmission assembly 12 further comprises a fifth connecting gear 1223, and the fifth connecting gear 1223 is fixedly arranged on the first connecting shaft 122, and the first motor gear 1111 is engaged with the fifth connecting gear 1223. The second transmission assembly 22 further comprises a sixth connecting gear 2223, and the sixth connecting gear 2223 is fixedly arranged on the second connecting shaft 222, and the second motor gear 2111 is engaged with the sixth connecting gear 2223.

[0072] ​Specifically, the first driving motor 11 has a first motor shaft 111, a first motor gear 1111 fixedly arranged on the first motor shaft 111, the first motor shaft 111 can drive the first motor gear 1111 to rotate synchronously, a fifth connecting gear 1223 fixedly arranged on the first connecting shaft 122, the fifth connecting gear 1223 can drive the first connecting shaft 122 to rotate synchronously, and the fifth connecting gear 1223 is engaged with the first motor gear 1111. Thus, when the first driving motor 11 works, the first motor shaft 111 drives the first motor gear 1111 to rotate, the first motor gear 1111 drives the fifth connecting gear 1223 engaged therewith to rotate, so that the fifth connecting gear 1223 drives the first connecting shaft 122 to rotate, and the power output by the first motor shaft 111 is reduced in speed and increased in torque.

[0073] The second driving motor 21 has a second motor shaft 211, a second motor gear 2111 fixedly arranged on the second motor shaft 211, the second motor shaft 211 can drive the second motor gear 2111 to rotate synchronously, a sixth connecting gear 2223 fixedly arranged on the second connecting shaft 222, the sixth connecting gear 2223 can drive the second connecting shaft 222 to rotate synchronously, and the sixth connecting gear 2223 is engaged with the second motor gear 2111. Thus, when the second driving motor 21 works, the second motor shaft 211 drives the second motor gear 2111 to rotate, the second motor gear 2111 drives the sixth connecting gear 2223 engaged therewith to rotate, so that the sixth connecting gear 2223 drives the second connecting shaft 222 to rotate, and the power output by the second motor shaft 211 is reduced in speed and increased in torque.

[0074] In some embodiments of the utility model, the transmission ratios of the first transmission assembly 12 and the second transmission assembly 22 are different, so as to increase the torque and speed range that the drive axle 10 can output, so that the first driving motor 11 and the second driving motor 21 can work in the high-efficiency zone, and the energy consumption of the drive axle 10 is reduced.

[0075] In some specific embodiments of the utility model, the drive axle 10 has 24 working modes in total, including 8 single-motor working modes and 16 double-motor working modes, wherein, in order to make the first driving motor 11 and the second driving motor 21 work in the high-efficiency zone as much as possible, there are 18 working modes that can be applied to the drive axle 10 with better economy and power, and the specific working modes are shown in Table 1.

[0076] Table 1

[0077]

[0078]

[0079] Specifically, when the first power mechanism 1 is in neutral, the first shift synchronizer 1213 is separated from the first output gear 1211 and the second output gear 1212, i.e. the first engagement sleeve 12132 is located at the position of V and VI in Figure 1 .

[0080] When the first power mechanism 1 is in first gear, the third shift synchronizer 1216 is engaged with the second input gear 1215, and the first shift synchronizer 1213 is engaged with the first output gear 1211, i.e. the third engagement sleeve 12162 is located at the position of II in Figure 1 , the first engagement sleeve 12132 is located at the position of V in Figure 1 , and the power transmission path of the first power mechanism 1 is: the first drive motor 11 → the first motor shaft 111 → the first motor gear 1111 → the fifth connecting gear 1223 → the first connecting shaft 122 → the second connecting gear 1222 → the second input gear 1215 → the third shift synchronizer 1216 → the first output shaft 121 → the first shift synchronizer 1213 → the first output gear 1211 → the first intermediate gear 41 → the intermediate shaft 4 → the sun gear 31 (the first input end 31a) → the planet gear 33 → the output end 34b of the planet carrier 34, at this time, the transmission ratio of the first power mechanism 1 is i11.

[0081] When the first power mechanism 1 is in second gear, the third shift synchronizer 1216 is engaged with the first input gear 1214, and the first shift synchronizer 1213 is engaged with the first output gear 1211, i.e. the third engagement sleeve 12162 is located at the position of I in Figure 1 , the first engagement sleeve 12132 is located at the position of V in Figure 1 , and the power transmission path of the first power mechanism 1 is: the first drive motor 11 → the first motor shaft 111 → the first motor gear 1111 → the fifth connecting gear 1223 → the first connecting shaft 122 → the first connecting gear 1221 → the first input gear 1214 → the third shift synchronizer 1216 → the first output shaft 121 → the first shift synchronizer 1213 → the first output gear 1211 → the first intermediate gear 41 → the intermediate shaft 4 → the sun gear 31 (the first input end 31a) → the planet gear 33 → the output end 34b of the planet carrier 34, at this time, the transmission ratio of the first power mechanism 1 is i12.

[0082] When the first power mechanism 1 is in third gear, the third shift synchronizer 1216 is engaged with the second input gear 1215, and the first shift synchronizer 1213 is engaged with the second output gear 1212, i.e. the third engagement sleeve 12162 is located at the position of II in Figure 1 , the first engagement sleeve 12132 is located at the position of V in Figure 1The power transmission path of the first power mechanism 1 is: the first driving motor 11 → the first motor shaft 111 → the first motor gear 1111 → the fifth connecting gear 1223 → the first connecting shaft 122 → the second connecting gear 1222 → the second input gear 1215 → the third shift synchronizer 1216 → the first output shaft 121 → the first shift synchronizer 1213 → the second output gear 1212 → the second intermediate gear 42 → the second input end 34a of the carrier 34 → the output end 34b of the carrier 34 when the first power mechanism 1 is in the sixth position in the figure, and the transmission ratio of the first power mechanism 1 is i13 at this time.

[0083] The third shift synchronizer 1216 is combined with the first input gear 1214, and the first shift synchronizer 1213 is combined with the second output gear 1212 when the first power mechanism 1 is in the fourth position in the figure, that is, the third combined gear sleeve 12162 is located in the position of Figure 1 The first combined gear sleeve 12132 is located in the position of Figure 1 The power transmission path of the first power mechanism 1 is: the first driving motor 11 → the first motor shaft 111 → the first motor gear 1111 → the fifth connecting gear 1223 → the first connecting shaft 122 → the first connecting gear 1221 → the first input gear 1214 → the third shift synchronizer 1216 → the first output shaft 121 → the first shift synchronizer 1213 → the second output gear 1212 → the second intermediate gear 42 → the second input end 34a of the carrier 34 → the output end 34b of the carrier 34 when the first power mechanism 1 is in the sixth position in the figure, and the transmission ratio of the first power mechanism 1 is i14 at this time.

[0084] Wherein, i11>i12>i13>i14, that is, the transmission ratio of the first gear of the first power mechanism 1 is the largest, and the transmission ratios of the second gear, the third gear, and the fourth gear of the first power mechanism 1 decrease in turn.

[0085] The second shift synchronizer 2213 is separated from the third output gear 2211 and the fourth output gear 2212 when the second power mechanism 2 is in the neutral position, that is, the second combined gear sleeve 22132 is located between the positions of Figure 1 and VIII in the figure.

[0086] The fourth shift synchronizer 2216 is combined with the fourth input gear 2215, and the second shift synchronizer 2213 is combined with the third output gear 2211 when the second power mechanism 2 is in the first position in the figure, that is, the fourth combined gear sleeve 22162 is located in the position of Figure 1 The second combined gear sleeve 22132 is located in the position of Figure 1At position VII, the power transmission path of the second power mechanism 2 is as follows: second drive motor 21 → second motor shaft 211 → second motor gear 2111 → sixth connecting gear 2223 → second connecting shaft 222 → fourth connecting gear 2222 → fourth input gear 2215 → fourth shift synchronizer 2216 → second output shaft 221 → second shift synchronizer 2213 → third output gear 2211 → first intermediate gear 41 → intermediate shaft 4 → sun gear 31 (first input end 31a) → planet gear 33 → output end 34b of planet carrier 34. At this time, the transmission ratio of the second power mechanism 2 is i21.

[0087] When the second power mechanism 2 is in second gear, the fourth shift synchronizer 2216 engages with the third input gear 2214, and the second shift synchronizer 2213 engages with the third output gear 2211, that is, the fourth engagement sleeve 22162 is located in... Figure 1 Position III in the middle, the second engagement sleeve 22132 is located at Figure 1 At position VII, the power transmission path of the second power mechanism 2 is as follows: second drive motor 21 → second motor shaft 211 → second motor gear 2111 → sixth connecting gear 2223 → second connecting shaft 222 → third connecting gear 2221 → third input gear 2214 → fourth shift synchronizer 2216 → second output shaft 221 → second shift synchronizer 2213 → third output gear 2211 → first intermediate gear 41 → intermediate shaft 4 → sun gear 31 (first input end 31a) → planet gear 33 → output end 34b of planet carrier 34. At this time, the transmission ratio of the second power mechanism 2 is i22.

[0088] When the second power mechanism 2 is in third gear, the fourth shift synchronizer 2216 engages with the fourth input gear 2215, and the second shift synchronizer 2213 engages with the fourth output gear 2212, that is, the fourth engagement sleeve 22162 is located in... Figure 1 Position IV in the middle, the second engaging toothed sleeve 22132 is located at Figure 1 At position VIII, the power transmission path of the second power mechanism 2 is as follows: second drive motor 21 → second motor shaft 211 → second motor gear 2111 → sixth connecting gear 2223 → second connecting shaft 222 → fourth connecting gear 2222 → fourth input gear 2215 → fourth shift synchronizer 2216 → second output shaft 221 → second shift synchronizer 2213 → fourth output gear 2212 → second intermediate gear 42 → second input end 34a of planetary carrier 34 → output end 34b of planetary carrier 34. At this time, the transmission ratio of the second power mechanism 2 is i23.

[0089] When the second power mechanism 2 is in the fourth gear, the fourth shift synchronizer 2216 is combined with the third input gear 2214, the second shift synchronizer 2213 is combined with the fourth output gear 2212, that is, the second combined gear sleeve 22162 is located in the III position in Figure 1 , the second combined gear sleeve 22132 is located in the VIII position in Figure 1 , and the power transmission path of the second power mechanism 2 is: the second driving motor 21→the second motor shaft 211→the second motor gear 2111→the sixth connecting gear 2223→the second connecting shaft 222→the third connecting gear 2221→the third input gear 2214→the fourth shift synchronizer 2216→the second output shaft 221→the second shift synchronizer 2213→the fourth output gear 2212→the second intermediate gear 42→the second input end 34a of the carrier 34→the output end 34b of the carrier 34, at this time, the transmission ratio of the second power mechanism 2 is i24.

[0090] Wherein, i21>i22>i23>i24, that is, the transmission ratio of the first gear of the second power mechanism 2 is the largest, and the transmission ratios of the second gear, the third gear and the fourth gear of the second power mechanism 2 decrease in turn.

[0091] It should be noted that the gear positions and power transmission paths of the second power mechanism 2 are similar to those of the first power mechanism 1, and the difference between the two is that the number of teeth of the corresponding gears is different, so as to realize different fourth gear transmission ratios of the first power mechanism 1 and the second power mechanism 2, that is, i11≠i21, i12≠i22, i13≠i23, i14≠i24.

[0092] In some embodiments of the utility model, refer to as shown in Figure 1 , the drive axle 10 further includes: a differential 6, the output end 34b is suitable for being connected with a wheel end through the differential 6, and the differential 6 can realize differential rotation of wheels on the left and right sides of the vehicle.

[0093] Refer to as shown in ​ , the drive axle 10 further includes a left half shaft 71 and a right half shaft 72, the differential 6 is connected with the left wheel of the vehicle through the left half shaft 71, the differential 6 is connected with the right wheel of the vehicle through the right half shaft 72, the differential 6 has an operating mechanism 61 and a differential lock gear sleeve 62, the differential lock gear sleeve 62 includes left and right plane teeth that can be mutually embedded, the left plane tooth can be connected with the shell of the differential 6, and the right plane tooth can be installed on the right half shaft 72, the differential lock gear sleeve 62 is in a normally open state under the normal driving condition of the vehicle, the left half shaft 71 and the right half shaft 72 can rotate freely relative to the shell of the differential 6, when the driven wheel on one side of the vehicle slips, the differential lock gear sleeve 62 is combined and locked under the action of the operating mechanism 61, so that the left half shaft 71 and the right half shaft 72 output the same torque.

[0094] According to the driving axle 10, the intermediate shaft 4 can be located on the central axis of the driving axle 1, the first power mechanism 1 and the second power mechanism 2 can be distributed on the front and rear sides of the central axis of the driving axle 10, so that the mass distribution of the driving axle 10 is reasonable, the assembly is convenient, and the stability of the electric driving axle is improved.

[0095] Through cooperation of the first power mechanism 1, the second power mechanism 2 and the planetary gear mechanism 3, the driving axle 10 can theoretically provide 24 working modes, 18 of which have high practical application value, and the multi-gear working mode can improve utilization of the high-efficiency zone of the first driving motor 11 and the second driving motor 21, while ensuring power, and maximally reducing vehicle energy consumption.

[0096] The first power mechanism 1 and the second power mechanism 2 can be replaced to realize uninterrupted shifting power of the driving axle 10, improve shifting quality, help improve service life of shifting elements, and avoid the risk of hill coasting.

[0097] The first power mechanism 1 and the second power mechanism 2 each have four switchable gears, so that the speed of the first driving motor 11 and the second driving motor 21 does not change too much before and after shifting when the vehicle is running, which can reduce heating of the first driving motor 11 and the second driving motor 21 and prolong service life of the driving axle 10.

[0098] In the power transmission direction of the driving axle 10, the planetary gear mechanism 3 is located upstream of the differential 6, and the planetary gear mechanism 3 can increase the transmission ratio of the driving axle 10.

[0099] According to another aspect of the utility model embodiment, the vehicle comprises the driving axle 10 of the above embodiment.

[0100] According to the utility model embodiment, the first power mechanism 1 and the second power mechanism 2 of the driving axle 10 are selectively in transmission connection with the intermediate shaft 4 and the second input end 34a, the planetary gear mechanism 3 can couple power of the first power mechanism 1 and the second power mechanism 2, and avoid interruption of power transmission, so as to improve product competitiveness of the driving axle 10, and meanwhile, the first power mechanism 1 and the second power mechanism 2 are symmetrically arranged relative to the intermediate shaft 4, thereby being beneficial to improving stability of the vehicle.

[0101] In some embodiments of the utility model, in the front-rear direction of the vehicle, the first power mechanism 1 and the second power mechanism 2 are symmetrically arranged relative to the intermediate shaft 4, so as to make weight distribution of the vehicle more reasonable in the front-rear direction of the vehicle and improve stability of the vehicle.

[0102] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and integrate different embodiments or examples described in the present specification.

[0103] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A drive axle, characterized in that The application relates to a power transmission mechanism for a drive axle, comprising: a planetary gear mechanism (3) having a first input end (31a), a second input end (34a) and an output end (34b) adapted to be connected with a wheel end transmission; an intermediate shaft (4) connected in transmission with the first input end (31a); a first power mechanism (1) selectively connected in transmission with the intermediate shaft (4) and the second input end (34a); a second power mechanism (2) selectively connected in transmission with the intermediate shaft (4) and the second input end (34a); wherein the first power mechanism (1) and the second power mechanism (2) are symmetrically arranged relative to the intermediate shaft (4).

2. The drive axle of claim 1, wherein, The planetary gear mechanism (3) comprises: a sun gear (31) fixed to the intermediate shaft (4), the sun gear (31) being the first input end (31a); a ring gear (32) fixed to a housing (5) of the drive axle; a planet gear (33) engaged between the sun gear (31) and the ring gear (32); a planet carrier (34) in which the planet gear (33) is rotatably arranged, the planet carrier (34) forming the second input end (34a) at one axial end of the planet gear (33) and forming the output end (34b) at the other axial end of the planet gear (33).

3. The drive axle of claim 2, wherein, The first power mechanism (1) comprises a first driving motor (11) and a first transmission assembly (12), the first driving motor (11) being selectively connected in transmission with the intermediate shaft (4) and the second input end (34a) through the first transmission assembly (12); The second power mechanism (2) comprises a second driving motor (21) and a second transmission assembly (22), the second driving motor (21) being selectively connected in transmission with the intermediate shaft (4) and the second input end (34a) through the second transmission assembly (22).

4. The drive axle of claim 3, wherein, The intermediate shaft (4) is fixed with a first intermediate gear (41) and is sleeved with a second intermediate gear (42), the second intermediate gear (42) being connected with the second input end (34a); The first transmission assembly (12) comprises a first output shaft (121), a first output gear (1211), a second output gear (1212) and a first shift synchronizer (1213), the first output shaft (121) being connected in transmission with the first driving motor (11), the first output gear (1211) and the second output gear (1212) being sleeved on the first output shaft (121), the first shift synchronizer (1213) being fixed to the first output shaft (121) and being selectively combined with the first output gear (1211) and the second output gear (1212). The second transmission assembly (22) comprises a second output shaft (221), a third output gear (2211), a fourth output gear (2212) and a second shift synchronizer (2213), the second output shaft (221) is in driving connection with the second driving motor (21), the third output gear (2211) and the fourth output gear (2212) are sleeved on the second output shaft (221), the second shift synchronizer (2213) is fixedly arranged on the second output shaft (221), and the second shift synchronizer (2213) is selectively combined with the third output gear (2211) and the fourth output gear (2212). The first output gear (1211) and the third output gear (2211) are in meshing connection with the first intermediate gear (41), and the second output gear (1212) and the fourth output gear (2212) are in meshing connection with the second intermediate gear (42).

5. The drive axle of claim 4, wherein, The first transmission assembly (12) further comprises a first connecting shaft (122), a first connecting gear (1221), a second connecting gear (1222), a first input gear (1214), a second input gear (1215) and a third shift synchronizer (1216), the first connecting gear (1221) and the second connecting gear (1222) are fixedly arranged on the first connecting shaft (122), the first input gear (1214) and the second input gear (1215) are sleeved on the first output shaft (121), the third shift synchronizer (1216) is fixedly arranged on the first output shaft (121), the third shift synchronizer (1216) is selectively combined with the first input gear (1214) and the second input gear (1215), the first input gear (1214) is in meshing connection with the first connecting gear (1221), the second input gear (1215) is in meshing connection with the second connecting gear (1222), and the first driving motor (11) is in driving connection with the first output shaft (121) through the first connecting shaft (122). The second transmission assembly (22) further comprises a second connecting shaft (222), a third connecting gear (2221), a fourth connecting gear (2222), a third input gear (2214), a fourth input gear (2215) and a fourth shift synchronizer (2216), the third connecting gear (2221) and the fourth connecting gear (2222) are both fixedly arranged on the second connecting shaft (222), the third input gear (2214) and the fourth input gear (2215) are both sleeved on the second output shaft (221), the fourth shift synchronizer (2216) is fixedly arranged on the second output shaft (221), the fourth shift synchronizer (2216) is selectively combined with the third input gear (2214) and the fourth input gear (2215), the third input gear (2214) is meshed with the third connecting gear (2221), the fourth input gear (2215) is meshed with the fourth connecting gear (2222), and the second drive motor (21) is drivingly connected with the second output shaft (221) through the second connecting shaft (222).

6. The drive axle of claim 5, wherein, The first drive motor (11) has a first motor shaft (111) fixedly arranged with a first motor gear (1111), and the second drive motor (21) has a second motor shaft (211) fixedly arranged with a second motor gear (2111); The first transmission assembly (12) further comprises a fifth connecting gear (1223) fixedly arranged on the first connecting shaft (122), and the first motor gear (1111) is meshed with the fifth connecting gear (1223); The second transmission assembly (22) further comprises a sixth connecting gear (2223) fixedly arranged on the second connecting shaft (222), and the second motor gear (2111) is meshed with the sixth connecting gear (2223).

7. Drive axle according to any one of claims 3-6, characterized in that, The transmission ratios of the first transmission assembly (12) and the second transmission assembly (22) are different.

8. The drive axle of claim 1, wherein, The drive axle further comprises a differential (6), and the output end (34b) is adapted to be drivingly connected with the wheel end through the differential (6).

9. A vehicle characterized by comprising: The drive axle comprises the drive axle according to any one of claims 1-8.

10. The vehicle of claim 9, wherein, In the front-rear direction of the vehicle, the first power mechanism (1) and the second power mechanism (2) are symmetrically arranged relative to the intermediate shaft (4). The drive axle further comprises a differential (6), and the output end (34b) is adapted to be drivingly connected with the wheel end through the differential (6).

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