Drive axle and vehicle having the same

Abstract

The present invention discloses a drive axle and a vehicle having the same. The drive axle includes: a axle housing; an input shaft rotatably mounted on the axle housing; an output shaft rotatably mounted on the axle housing and drivingly connected to the input shaft, the output shaft being adapted to be connected to a wheel; a half-axle gear set mounted in the axle housing and sleeved on the output shaft, the half-axle gear set being drivingly connected to the input shaft; a first transmission shaft rotatably mounted on the axle housing and drivingly connected to the half-axle gear set, the input shaft transmitting power to the first transmission shaft through the transmission gear set; wherein, the input shaft, the output shaft and the first transmission shaft are located in the same plane. The drive axle according to the embodiment of the present invention has the advantages of compact structure, large torque and avoiding axial interference, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a drive axle and a vehicle having the same. Background Art

[0002] The drive axles in the related art generally include an input shaft, an output shaft and a drive shaft. The input shaft and the drive shaft extend along the front-back direction of the vehicle, and the output shaft extends along the width direction of the vehicle and is connected to the wheel. However, in order to avoid position interference between the drive shaft and the output shaft, the drive shaft and the output shaft are usually arranged in different planes, and the diameters of the drive shaft and the output shaft are also limited. This not only results in a large volume of the drive axle, but also fails to achieve a large torque. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the present invention is to provide a drive axle, which has the advantages of compact structure, large torque and avoiding axial interference.

[0004] The present invention also provides a vehicle having the above drive axle.

[0005] To achieve the above object, according to a first aspect embodiment of the present invention, a drive axle is provided, including: a bridge housing; an input shaft rotatably mounted on the bridge housing; an output shaft rotatably mounted on the bridge housing and drivingly connected to the input shaft, the output shaft being adapted to be connected to a wheel; a half shaft gear set mounted in the bridge housing and sleeved on the output shaft, the half shaft gear set being drivingly connected to the input shaft; a first drive shaft rotatably mounted on the bridge housing and drivingly connected to the half shaft gear set, the input shaft transmitting power to the first drive shaft through the transmission gear set; wherein, the input shaft, the output shaft and the first drive shaft are located in the same plane.

[0006] The drive axle according to the embodiment of the present invention has the advantages of compact structure, large torque and avoiding axial interference.

[0007] According to some embodiments of the present invention, the half shaft gear set includes: a first housing, the first housing is connected to the axle housing and has a fixed relative position, and the first housing is sleeved on the output shaft and the first transmission shaft; a plurality of first half shaft gears, the first half shaft gears are arranged in the first housing and are sleeved on the output shaft, and the plurality of first half shaft gears are arranged at intervals along the axial direction of the output shaft; a second half shaft gear, the second half shaft gear is arranged in the first housing and meshes with the first half shaft gears, and the input shaft is in transmission connection with the second half shaft gear; a third half shaft gear, the third half shaft gear is arranged in the first housing and meshes with the first half shaft gears, and the first transmission shaft is in transmission connection with the second half shaft gear; wherein, the second half shaft gear transmits power to the third half shaft gear through the first half shaft gears.

[0008] According to some embodiments of the present invention, the rotation axis of the output shaft coincides with the rotation axes of the plurality of first half shaft gears and extends along the width direction of the vehicle; the rotation axes of the input shaft, the first transmission shaft, the second half shaft gear and the third half shaft gear coincide and extend along the length direction of the vehicle.

[0009] According to some embodiments of the present invention, the drive axle further includes: a first differential, the first differential is rotatably arranged in the axle housing and is in transmission connection with the input shaft; a second transmission shaft, the second transmission shaft is arranged in the axle housing and is respectively in transmission connection with the first differential and the half shaft gear set, and the input shaft transmits power to the first transmission shaft through the first differential, the second transmission shaft and the half shaft gear set; a transmission gear set, the transmission gear set is arranged in the axle housing and is respectively in transmission connection with the first differential and the output shaft, and the input shaft transmits power to the first transmission shaft through the first differential and the transmission gear set.

[0010] According to some embodiments of the present invention, the first differential includes: a second housing, the second housing is rotatably arranged in the axle housing and is in transmission connection with the input shaft, and a first rotating shaft perpendicular to the second transmission shaft is arranged in the second housing; a fourth half shaft gear, the fourth half shaft gear is rotatably arranged in the second housing and is in transmission connection with the second transmission shaft; a fifth half shaft gear, the fifth half shaft gear is rotatably arranged in the second housing and is in transmission connection with the transmission gear set, and the fifth half shaft gear is sleeved on the second transmission shaft; a plurality of first planetary gears, the plurality of first planetary gears are rotatably arranged in the second housing and are sleeved on the first rotating shaft, and the first planetary gears are respectively meshed with the fourth half shaft gear and the fifth half shaft gear.

[0011] According to some embodiments of the present invention, the transmission gear set includes: a first helical gear, the first helical gear being in transmission connection with the first differential, and the central axis of the first helical gear, the central axis of the second transmission shaft, and the central axis of the input shaft coincide; a second helical gear, the second helical gear being in transmission connection with the output shaft and meshing with the first helical gear, and the central axis of the second helical gear coincides with the central axis of the output shaft and is perpendicular to the central axis of the first helical gear.

[0012] According to some embodiments of the present invention, the central axis of the first helical gear and the central axis of the second helical gear are located in the same plane.

[0013] According to some embodiments of the present invention, the first helical gear is sleeved on the second transmission shaft and is provided with a transmission shaft rod, the transmission shaft rod is sleeved on the second transmission shaft and extends into the second housing to be connected with the fifth half shaft gear; the second helical gear and the half shaft gear set are arranged at intervals along the axial direction of the output shaft.

[0014] According to some embodiments of the present invention, the drive axle further includes: a second differential, the second differential being rotatably arranged in the axle housing and in transmission connection with the second helical gear, the output shaft includes a first half shaft and a second half shaft, the first half shaft and the second half shaft are adapted to be in transmission connection with different wheels, the half shaft gear set is sleeved on one of the first half shaft and the second half shaft, and the first half shaft and the second half shaft are connected to opposite sides of the second differential in the width direction of the vehicle.

[0015] According to some embodiments of the present invention, the second differential includes: a third housing, the third housing being rotatably arranged in the axle housing and in transmission connection with the second helical gear, a second rotating shaft perpendicular to the output shaft is arranged in the third housing; a sixth half shaft gear, the sixth half shaft gear being rotatably arranged in the third housing and in transmission connection with the first half shaft; a seventh half shaft gear, the seventh half shaft gear being rotatably arranged in the third housing and in transmission connection with the second half shaft; a plurality of second planetary gears, the plurality of second planetary gears being rotatably arranged in the third housing and sleeved on the second rotating shaft, and the second planetary gears are respectively meshed with the sixth half shaft gear and the seventh half shaft gear.

[0016] According to a second aspect embodiment of the present invention, a vehicle is proposed, including the drive axle according to the first aspect embodiment of the present invention.

[0017] The vehicle according to the second aspect embodiment of the present invention, by using the drive axle according to the first aspect embodiment of the present invention, has the advantages of compact structure, large torque, and avoiding interaxial interference.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is a schematic diagram of a drive axle according to an embodiment of the present invention.

[0021] Figure 2 is a schematic diagram of the positions of a first helical gear and a second helical gear according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] Drive axle 1,

[0024] Axle housing 100, input shaft 200,

[0025] Output shaft 300, first half shaft 310, second half shaft 320,

[0026] Half shaft gear set 400, first housing 410, first half shaft gear 420, second half shaft gear 430, third half shaft gear 440,

[0027] First transmission shaft 500, second transmission shaft 510,

[0028] First differential 600, second housing 610, first rotating shaft 611, fourth half shaft gear 620, fifth half shaft gear 630, first planetary gear 640,

[0029] Transmission gear set 700, first helical gear 710, second helical gear 720, transmission shaft rod 730,

[0030] Second differential 800, third housing 810, second rotating shaft 811, sixth half shaft gear 820, seventh half shaft gear 830, second planetary gear 840. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0033] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0034] In the description of the present invention, "a plurality" means two or more, and "several" means one or more.

[0035] The drive axle 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0036] As Figure 1 and Figure 2 shown, the drive axle 1 according to an embodiment of the present invention includes a bridge housing 100, an input shaft 200, an output shaft 300, a half axle gear set 400, and a first drive shaft 500.

[0037] The input shaft 200 is rotatably mounted on the bridge housing 100. The output shaft 300 is rotatably mounted on the bridge housing 100 and is in driving connection with the input shaft 200. The output shaft 300 is adapted to be connected to a wheel. The half axle gear set 400 is mounted in the bridge housing 100 and is sleeved on the output shaft 300. The half axle gear set 400 is in driving connection with the input shaft 200. The first drive shaft 500 is rotatably mounted on the bridge housing 100 and is in driving connection with the half axle gear set 400. The input shaft 200 transmits power to the first drive shaft 500 through a transmission gear set 700. Among them, the input shaft 200, the output shaft 300, and the first drive shaft 500 are located in the same plane.

[0038] That is to say, the drive axle 1 in the embodiment of the present invention can be a double drive axle. The input shaft 200 transmits power to the output shaft 300 and drives the wheel to rotate through the output shaft 300. At the same time, it can also transmit power to another output shaft 300 through the first drive shaft 500, and then drive other wheels to rotate through the other output shaft 300. For example, the output shaft 300 can be the drive shaft of the middle bridge, and the first drive shaft 500 can transmit power to the drive shaft of the rear bridge.

[0039] According to the drive axle 1 of the embodiment of the present invention, by rotatably mounting the input shaft 200 on the axle housing 100, rotatably mounting the output shaft 300 on the axle housing 100 and drivingly connecting the output shaft 300 with the input shaft 200, and the output shaft 300 is adapted to be connected with the wheels. In this way, the driving force of the vehicle can be transmitted to the drive axle 1 through the input shaft 200, thereby driving the output shaft 300 to rotate through the input shaft 200, and transmitting the power to the wheels through the output shaft 300, and then the vehicle can be driven to run normally.

[0040] In addition, the half-shaft gear set 400 is mounted in the axle housing 100 and is sleeved on the output shaft 300. The half-shaft gear set 400 is drivingly connected with the input shaft 200. The first transmission shaft 500 is rotatably mounted in the axle housing 100 and is drivingly connected with the half-shaft gear set 400. The input shaft 200 transmits power to the first transmission shaft 500 through the transmission gear set 700. Thus, the output shaft 300 can rotate relative to the half-shaft gear set 400. In this way, the rotation of the half-shaft gear set 400 and the rotation of the output shaft 300 can be non-interfering, the output shaft 300 can rotate normally to transmit power to the wheels, and the input shaft 200 can transmit power to the first transmission shaft 500 through the half-shaft gear set 400.

[0041] Moreover, the input shaft 200, the output shaft 300 and the first transmission shaft 500 are located in the same plane. It can be understood that the input shaft 200 can be arranged on one side of the half-shaft gear set 400, and the first transmission shaft 500 can be arranged on the other side of the half-shaft gear set 400, that is, the input shaft 200 and the first transmission shaft 500 can be respectively arranged on the radially opposite sides of the output shaft 300. Furthermore, the central axis of the input shaft 200, the central axis of the output shaft 300 and the central axis of the first transmission shaft 500 can be located in the same plane, and the position interference between the input shaft 200 and the first transmission shaft 500 and the output shaft 300 can be avoided. In this way, the structural arrangement of the input shaft 200, the first transmission shaft 500 and the output shaft 300 in the radial direction (that is, the up and down direction) of the output shaft 300 can be more compact, which is beneficial to reducing the volume of the drive axle 1 and making the structure of the drive axle 1 more compact. Moreover, the diameters of the input shaft 200, the first transmission shaft 500 and the output shaft 300 can be set larger, which is beneficial to improving the torque of the drive axle 1, making the maximum driving force of the drive axle 1 larger and the driving performance stronger.

[0042] In this way, the drive axle 1 according to the embodiment of the present invention has the advantages of compact structure, large torque and avoiding interference between shafts.

[0043] In some specific embodiments of the present invention, as Figure 1 shown, the half-shaft gear set 400 includes a first housing 410, a plurality of first half-shaft gears 420, a second half-shaft gear 430 and a third half-shaft gear 440.

[0044] The first housing 410 is connected to the axle housing 100 with a fixed relative position. The first housing 410 is sleeved on the output shaft 300 and the first transmission shaft 500. The first differential side gear 420 is arranged in the first housing 410 and is sleeved on the output shaft 300. A plurality of first differential side gears 420 are arranged at intervals along the axial direction of the output shaft 300. The second differential side gear 430 is arranged in the first housing 410 and meshes with the first differential side gear 420. The input shaft 200 is drivingly connected to the second differential side gear 430. The third differential side gear 440 is arranged in the first housing 410 and meshes with the first differential side gear 420. The first transmission shaft 500 is drivingly connected to the second differential side gear 430; wherein, the second differential side gear 430 transmits power to the third differential side gear 440 through the first differential side gear 420.

[0045] In this way, the first housing 410 can cover a plurality of first differential side gears 420, second differential side gears 430 and third differential side gears 440, avoiding interference between the first differential side gears 420, second differential side gears 430 and third differential side gears 440 and other components of the drive axle 1, which is beneficial to protecting the differential side gear set 400.

[0046] Specifically, the position of the first housing 410 is fixed with respect to the axle housing 100. The position of the first housing 410 is fixed and immovable, and the first housing 410 is sleeved on the output shaft 300 and the first transmission shaft 500. The output shaft 300 and the first transmission shaft 500 can rotate relative to the housing. The first differential side gear 420 can rotate relative to the output shaft 300 along its own rotation axis. In this way, the first differential side gear 420 and the output shaft 300 do not transmit power to each other, and the rotation of the first differential side gear 420 and the output shaft 300 does not interfere. At the same time, the second differential side gear 430 and the third differential side gear 440 can rotate around their own rotation axes. Thus, the power of the input shaft 200 can be transmitted to a plurality of first differential side gears 420 through the second differential side gear 430, and then the power can be transmitted to the third differential side gear 440 through the plurality of first differential side gears 420. The rotation of the third differential side gear 440 drives the rotation of the first transmission shaft 500, and the power is transmitted to the drive shaft of the rear axle through the first transmission shaft 500 to realize the power transmission from the input shaft 200 to the rear axle.

[0047] Moreover, the input shaft 200 can mesh with one side of the first differential side gear 420 through the second differential side gear 430, and the first transmission shaft 500 can mesh with the other side of the first differential side gear 420 through the third differential side gear 440. The input shaft 200 and the first transmission shaft 500 can be respectively located on the radially opposite sides of the output shaft 300. Even if the input shaft 200, the first transmission shaft 500 and the output shaft 300 are in the same plane, there will be no axial interference among the input shaft 200, the first transmission shaft 500 and the output shaft 300, which is convenient for the layout of the drive axle 1.

[0048] In some specific embodiments of the present invention, as Figure 1 shown, the rotation axis of the output shaft 300 coincides with the rotation axes of the plurality of first half-shaft gears 420 and extends along the width direction of the vehicle, and the rotation axis of the input shaft 200, the rotation axis of the first transmission shaft 500, the rotation axis of the second half-shaft gear 430, and the rotation axis of the third half-shaft gear 440 coincide and extend along the length direction of the vehicle.

[0049] By extending the rotation axis of the output shaft 300 along the width direction of the vehicle, that is, along the left-right direction of the vehicle, it is convenient for the output shaft 300 to transmit power to the wheels on both sides of the vehicle to drive the wheels to rotate. Moreover, the rotation axes of the plurality of first half-shaft gears 420 also extend along the width direction of the vehicle, which is convenient for the first half-shaft gears 420 to be sleeved on the output shaft 300, and the first half-shaft gears 420 can rotate relative to the output shaft 300, avoiding rotational interference between the first half-shaft gears 420 and the output shaft 300.

[0050] In addition, the input shaft 200 and the first transmission shaft 500 extend along the length direction of the vehicle, that is, along the front-back direction of the vehicle, which is convenient for the input shaft 200 and the first transmission shaft 500 to transmit power to different axles of the vehicle. For example, the middle axle and the rear axle. Moreover, the rotation axis of the second half-shaft gear 430 coincides with the rotation axis of the third half-shaft gear 440 and extends along the length direction of the vehicle, which is convenient for power transmission between the input shaft 200 and the second half-shaft gear 430, and for connection between the first transmission shaft 500 and the third half-shaft gear 440 for power transmission, making the layout inside the drive axle 1 more reasonable and more compact, simplifying the power transmission path of the drive axle 1 while also facilitating the simplification of the structure of the drive axle 1, and making the volume of the drive axle 1 smaller.

[0051] In some specific embodiments of the present invention, as Figure 1 shown, the drive axle 1 further includes a first differential 600, a second transmission shaft 510, and a transmission gear set 700.

[0052] The first differential 600 is rotatably disposed in the axle housing 100 and is in transmission connection with the input shaft 200. The second transmission shaft 510 is disposed in the axle housing 100 and is in transmission connection with the first differential 600 and the half-shaft gear set 400 respectively. The input shaft 200 transmits power to the first transmission shaft 500 through the first differential 600, the second transmission shaft 510, and the half-shaft gear set 400. The transmission gear set 700 is disposed in the axle housing 100 and is in transmission connection with the first differential 600 and the output shaft 300 respectively. The input shaft 200 transmits power to the first transmission shaft 500 through the first differential 600 and the transmission gear set 700.

[0053] That is to say, the power of the input shaft 200 can be sequentially transmitted to the rear axle of the vehicle through the first differential 600, the second transmission shaft 510, the half-shaft gear set 400, and the first transmission shaft 500. At the same time, the power of the input shaft 200 can also be transmitted to the output shaft 300, that is, the middle axle of the vehicle, through the first differential 600 and the transmission gear set 700. In this way, the half-shaft gear set 400 can avoid the axial interference between the first transmission shaft 500 and the output shaft 300, and avoid the axial interference between the second transmission shaft 510 and the output shaft 300. Moreover, the first differential 600 can achieve differential transmission of these two power transmission paths, and then achieve differential rotation of the middle axle and the rear axle of the vehicle, so that the vehicle can drive normally and avoid idling or slipping of the middle axle or the rear axle.

[0054] Further, as Figure 1 shown, the first differential 600 includes a second housing 610, a fourth half-shaft gear 620, a fifth half-shaft gear 630, and a plurality of first planetary gears 640.

[0055] The second housing 610 is rotatably disposed in the axle housing 100 and is in transmission connection with the input shaft 200. A first rotating shaft 611 perpendicular to the second transmission shaft 510 is provided in the second housing 610. The fourth half-shaft gear 620 is rotatably disposed in the second housing 610 and is in transmission connection with the second transmission shaft 510. The fifth half-shaft gear 630 is rotatably disposed in the second housing 610 and is in transmission connection with the transmission gear set 700. The fifth half-shaft gear 630 is sleeved on the second transmission shaft 510. The plurality of first planetary gears 640 are rotatably disposed in the second housing 610 and are sleeved on the first rotating shaft 611. The first planetary gears 640 are respectively meshed with the fourth half-shaft gear 620 and the fifth half-shaft gear 630.

[0056] For example, the rotation axis of the second housing 610 can coincide with the rotation axis of the input shaft 200, and the central axis of the first rotating shaft 611 is perpendicular to the rotation axis of the second housing 610. In this way, the input shaft 200 can drive the second housing 610 to rotate, and the second housing 610 can drive a plurality of first planetary gears 640 to revolve around the rotation axis of the second housing 610 through the first rotating shaft 611. At the same time, the first planetary gears 640 can also rotate around the central axis of the first rotating shaft 611.

[0057] Thus, the first differential 600 can drive the fourth half shaft gear 620 and the fifth half shaft gear 630 to rotate through the revolution of the first planetary gear 640 around the rotation axis of the second housing 610. Furthermore, power can be transmitted to the output shaft 300 through the fourth half shaft gear 620, and power can be transmitted to the drive shaft of the rear axle through the fifth half shaft gear 630. Moreover, when the first planetary gear 640 rotates around its own axis while revolving, the fourth half shaft gear 620 and the fifth half shaft gear 630 can rotate differentially, so that differential transmission from the first differential 600 to the middle axle and the rear axle can be achieved, and differential rotation of the middle axle and the rear axle can be realized.

[0058] In some specific embodiments of the present invention, as Figure 1 shown, the transmission gear set 700 includes a first helical gear 710 and a second helical gear 720.

[0059] The first helical gear 710 is in transmission connection with the first differential 600. The central axis of the first helical gear 710, the central axis of the second transmission shaft 510, and the central axis of the input shaft 200 coincide. The second helical gear 720 is in transmission connection with the output shaft 300 and meshes with the first helical gear 710. The central axis of the second helical gear 720 coincides with the central axis of the output shaft 300 and is perpendicular to the central axis of the first helical gear 710.

[0060] Specifically, the first helical gear 710 is sleeved on the second transmission shaft 510 and is provided with a transmission shaft rod 730. The transmission shaft rod 730 is sleeved on the second transmission shaft 510 and extends into the second housing 610 to be connected with the fifth half shaft gear 630. In this way, the first helical gear 710 and the fifth half shaft gear 630 can be connected through the transmission shaft rod 730, so that the first helical gear 710 and the fifth half shaft gear 630 can rotate synchronously, and the first helical gear 710 does not need to completely extend into the second housing 610, which is beneficial to reducing the volume of the second housing 610 and avoiding interference between the second housing 610 and the first helical gear 710.

[0061] In some specific embodiments of the present invention, as Figure 1 shown, the first helical gear 710 is sleeved on the second transmission shaft 510 and is provided with a transmission shaft rod 730. The transmission shaft rod 730 is sleeved on the second transmission shaft 510 and extends into the second housing 610 to be connected with the fifth half shaft gear 630. In this way, the first helical gear 710 and the fifth half shaft gear 630 can be connected through the transmission shaft rod 730, so that the first helical gear 710 and the fifth half shaft gear 630 can rotate synchronously, and the first helical gear 710 does not need to completely extend into the second housing 610, which is beneficial to reducing the volume of the second housing 610 and avoiding interference between the second housing 610 and the first helical gear 710.

[0062] In addition, the second helical gear 720 and the half-axle gear set 400 are axially spaced along the output shaft 300. In this way, the second helical gear 720 will not interfere with the position of the first housing 410 of the half-axle gear set 400, avoiding friction between the second helical gear 720 and the first housing 410 during rotation. The layout of the drive axle 1 is more reasonable, and the rotational resistance of the second helical gear 720 is smaller.

[0063] In some specific embodiments of the present invention, as Figure 2 shown, the central axis of the first helical gear 710 and the central axis of the second helical gear 720 are located in the same plane.

[0064] It can be understood that the first helical gear 710 is sleeved on the second transmission shaft 510, and the second helical gear 720 is sleeved on the output shaft 300. After the central axes of the first transmission shaft 500, the second transmission shaft 510, and the output shaft 300 are arranged in the same plane by setting the half-axle gear set 400, the central axis of the first helical gear 710 and the central axis of the second helical gear 720 can also be located in the same plane.

[0065] That is to say, there may be no offset distance between the first helical gear 710 and the second helical gear 720. In this way, the efficiency loss caused by tooth surface slip during the transmission of the first helical gear 710 and the second helical gear 720 can be effectively avoided, which is beneficial to improving the transmission efficiency of the drive axle 1, and the probability of faults such as tooth surface pitting can be reduced, which is beneficial to extending the service life of the first helical gear 710 and the second helical gear 720.

[0066] In some specific embodiments of the present invention, as Figure 1 shown, the drive axle 1 further includes a second differential 800.

[0067] The second differential 800 is rotatably arranged in the axle housing 100 and is in transmission connection with the second helical gear 720. The output shaft 300 includes a first half-axle 310 and a second half-axle 320. The first half-axle 310 and the second half-axle 320 are adapted to be in transmission connection with different wheels. The half-axle gear set 400 is sleeved on one of the first half-axle 310 and the second half-axle 320. The first half-axle 310 and the second half-axle 320 are connected to opposite sides of the second differential 800 in the width direction of the vehicle.

[0068] That is to say, the power transmitted by the input shaft 200 to the second helical gear 720 can be successively transmitted to the wheels on one side of the output shaft 300 through the second differential 800 and the first half shaft 310. At the same time, the power transmitted by the input shaft 200 to the second helical gear 720 can also be transmitted to the wheels on the other side of the output shaft 300 through the second differential 800 and the second half shaft 320. In this way, the second differential 800 can achieve differential transmission of these two power transmission paths, and further achieve differential rotation of the wheels on both sides of the output shaft 300, enabling the vehicle to turn normally and preventing one wheel from idling when the vehicle is driving on a potholed road surface, thereby preventing the vehicle from skidding.

[0069] Further, as Figure 1 shown, the second differential 800 includes a third housing 810, a sixth side gear 820, a seventh side gear 830, and a plurality of second planetary gears 840.

[0070] The third housing 810 is rotatably disposed in the axle housing 100 and is in transmission connection with the second helical gear 720. A second rotating shaft 811 perpendicular to the output shaft 300 is provided in the third housing 810. The sixth side gear 820 is rotatably disposed in the third housing 810 and is in transmission connection with the first half shaft 310. The seventh side gear 830 is rotatably disposed in the third housing 810 and is in transmission connection with the second half shaft 320. The plurality of second planetary gears 840 are rotatably disposed in the third housing 810 and sleeved on the second rotating shaft 811. The second planetary gears 840 are respectively engaged with the sixth side gear 820 and the seventh side gear 830.

[0071] Specifically, the rotation axis of the third housing 810 can coincide with the rotation axis of the output shaft 300, and the central axis of the second rotating shaft 811 is perpendicular to the rotation axis of the third housing 810. In this way, the second helical gear 720 can drive the third housing 810 to rotate around the rotation axis of the output shaft 300, and the third housing 810 can drive the plurality of second planetary gears 840 to revolve around the rotation axis of the output shaft 300 through the second rotating shaft 811. At the same time, the second planetary gears 840 can also rotate around the central axis of the second rotating shaft 811.

[0072] Accordingly, the second differential 800 can drive the sixth side gear 820 and the seventh side gear 830 to rotate by the revolution of the second planet gear 840 around the axis of rotation of the output shaft 300. Furthermore, power can be transmitted to the first half shaft 310 through the sixth side gear 820, and power can be transmitted to the second half shaft 320 through the seventh side gear 830. Moreover, when the second planet gear 840 rotates around its own axis while revolving, the sixth side gear 820 and the seventh side gear 830 can perform differential rotation, so as to realize the differential transmission of the second differential 800 to the first half shaft 310 and the second half shaft 320, so as to realize the differential rotation of the wheels on the left and right sides of the output shaft 300, enabling the vehicle to turn normally and preventing one side wheel from idling when the vehicle is driving on a potholed road surface, thereby preventing the vehicle from skidding.

[0073] The vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The vehicle includes a drive axle 1 according to the above embodiment of the present invention.

[0074] The vehicle according to an embodiment of the present invention, by using the drive axle 1 according to the above embodiment of the present invention, has the advantages of a compact structure, a large torque, and avoiding axial interference.

[0075] Other configurations and operations of the drive axle 1 according to an embodiment of the present invention and the vehicle having the same are known to those of ordinary skill in the art and will not be described in detail here.

[0076] In the description of this specification, the descriptions referring to terms such as "specific embodiment", "specific example", etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0077] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A drive axle, characterized in that, Comprising: Axle housing; Input shaft, which is rotatably mounted on the axle housing; Output shaft, which is rotatably mounted on the axle housing and is in transmission connection with the input shaft, and the output shaft is adapted to be connected to a wheel; Differential gear set, which is mounted in the axle housing and is sleeved on the output shaft, and the differential gear set is in transmission connection with the input shaft; First transmission shaft, which is rotatably mounted on the axle housing and is in transmission connection with the differential gear set, and the input shaft transmits power to the first transmission shaft through the differential gear set. The input shaft, the output shaft and the first transmission shaft are located in the same plane, and the input shaft and the first transmission shaft are respectively arranged on the radially opposite sides of the output shaft; Wherein, the differential gear set includes: First housing, which is connected to the axle housing and has a fixed relative position, and the first housing is sleeved on the output shaft and the first transmission shaft; Multiple first differential gears, which are arranged in the first housing and are sleeved on the output shaft, and the multiple first differential gears are arranged at intervals along the axial direction of the output shaft; Second differential gear, which is arranged in the first housing and meshes with the first differential gears, and the input shaft is in transmission connection with the second differential gear; Third differential gear, which is arranged in the first housing and meshes with the first differential gears, and the first transmission shaft is in transmission connection with the second differential gear; Wherein, the second differential gear transmits power to the third differential gear through the first differential gears.

2. The drive axle according to claim 1, characterized in that, The rotation axis of the output shaft coincides with the rotation axes of the multiple first differential gears and extends along the width direction of the vehicle; The rotation axes of the input shaft, the first transmission shaft, the second differential gear and the third differential gear coincide and extend along the length direction of the vehicle.

3. The drive axle according to claim 1, characterized in that, Further comprising: First differential, which is rotatably arranged in the axle housing and is in transmission connection with the input shaft; Second transmission shaft, which is arranged in the axle housing and is respectively in transmission connection with the first differential and the differential gear set, and the input shaft transmits power to the first transmission shaft through the first differential, the second transmission shaft and the differential gear set; Transmission gear set, which is arranged in the axle housing and is respectively in transmission connection with the first differential and the output shaft, and the input shaft transmits power to the first transmission shaft through the first differential and the transmission gear set.

4. The drive axle according to claim 3, wherein The first differential includes: Second housing, which is rotatably arranged in the axle housing and is in transmission connection with the input shaft, and a first rotating shaft perpendicular to the second transmission shaft is arranged in the second housing; Fourth differential gear, which is rotatably arranged in the second housing and is in transmission connection with the second transmission shaft; Fifth differential gear, which is rotatably arranged in the second housing and is in transmission connection with the transmission gear set, and the fifth differential gear is sleeved on the second transmission shaft; A plurality of first planetary gears, the plurality of first planetary gears being rotatably disposed within the second housing and sleeved on the first rotating shaft, and the first planetary gears meshing with the fourth half shaft gear and the fifth half shaft gear respectively.

5. The drive axle according to claim 4, characterized in that, The transmission gear set includes: A first helical gear, the first helical gear being in transmission connection with the first differential, and the central axis of the first helical gear, the central axis of the second transmission shaft, and the central axis of the input shaft coinciding; A second helical gear, the second helical gear being in transmission connection with the output shaft and meshing with the first helical gear, and the central axis of the second helical gear coinciding with the central axis of the output shaft and being perpendicular to the central axis of the first helical gear.

6. The drive axle according to claim 5, characterized in that, The central axis of the first helical gear and the central axis of the second helical gear are located in the same plane.

7. The drive axle according to claim 5, characterized in that, The first helical gear is sleeved on the second transmission shaft and is provided with a transmission shaft rod, the transmission shaft rod being sleeved on the second transmission shaft and extending into the second housing to be connected with the fifth half shaft gear; The second helical gear and the half shaft gear set are arranged at intervals along the axial direction of the output shaft.

8. The drive axle according to claim 5, wherein It further includes: A second differential, the second differential being rotatably disposed within the axle housing and in transmission connection with the second helical gear, the output shaft including a first half shaft and a second half shaft, the first half shaft and the second half shaft being adapted to be in transmission connection with different wheels, the half shaft gear set being sleeved on one of the first half shaft and the second half shaft, and the first half shaft and the second half shaft being connected to opposite sides of the second differential in the width direction of the vehicle.

9. The drive axle according to claim 8, wherein, The second differential includes: A third housing, the third housing being rotatably disposed within the axle housing and in transmission connection with the second helical gear, and a second rotating shaft perpendicular to the output shaft being provided within the third housing; A sixth half shaft gear, the sixth half shaft gear being rotatably disposed within the third housing and in transmission connection with the first half shaft; A seventh half shaft gear, the seventh half shaft gear being rotatably disposed within the third housing and in transmission connection with the second half shaft; A plurality of second planetary gears, the plurality of second planetary gears being rotatably disposed within the third housing and sleeved on the second rotating shaft, and the second planetary gears meshing with the sixth half shaft gear and the seventh half shaft gear respectively.

10. A vehicle, characterized in that, It includes a drive axle according to any one of claims 1-9.

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