Drive axle assembly and vehicle

Abstract

The invention discloses a drive axle assembly and a vehicle. The drive axle assembly comprises a drive axle, a first motor, a second motor and a cooling pipeline module. The two ends, in the first direction, of the drive axle are suitable for being connected with wheels. The first motor and the second motor are arranged on the two sides of the drive axle in the second direction respectively. The cooling pipeline module is arranged on one side, in the third direction, of the drive axle and comprises a liquid inlet pipe and a liquid outlet pipe, the liquid outlet end of the liquid inlet pipe communicates with liquid inlets of the first motor and the second motor correspondingly, and the liquid inlet end of the liquid outlet pipe communicates with liquid outlets of the first motor and the second motor correspondingly. The first direction, the second direction, and the third direction are orthogonal to each other. According to the drive axle assembly, the possibility of water leakage caused by pulling of the liquid inlet pipe and the liquid outlet pipe is reduced, the probability of friction between the liquid inlet pipe and peripheral parts and between the liquid outlet pipe and peripheral parts is reduced, and the problems of abrasion, liquid leakage and the like of the liquid inlet pipe and the liquid outlet pipe under the action of long-term friction are avoided.

Description

Technical Field

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

[0002] In the prior art, the drive axle assembly of the vehicle is connected to the cooling hose of the motor, and the cooling hose extends roughly along the height direction of the drive axle assembly. When the vehicle is traveling on an uneven road, the drive axle assembly will jump up and down significantly with the suspension, and the motor cooling hose connected to the drive axle assembly will be pulled up and down, causing the joint of the cooling hose to leak due to pulling, and also increasing the probability of friction between the cooling hose and surrounding components. The cooling hose is prone to wear, leakage and other problems under the action of long-term friction. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a drive axle assembly, which reduces the possibility of water leakage due to pulling of the inlet pipe and the outlet pipe, reduces the probability of friction between the inlet pipe and the outlet pipe and the surrounding components, and avoids the problems of wear and leakage of the inlet pipe and the outlet pipe due to long-term friction.

[0004] Another object of the present invention is to provide a vehicle comprising the above-mentioned drive axle assembly.

[0005] According to the first aspect of the present invention, the drive axle assembly includes: a drive axle, wherein both ends of the drive axle in a first direction are suitable for connection with wheels; a first motor and a second motor, wherein the first motor and the second motor are respectively arranged on both sides of the drive axle in the second direction; a cooling pipe module, wherein the cooling pipe module is arranged on one side of the drive axle in a third direction, wherein the cooling pipe module includes a liquid inlet pipe and a liquid outlet pipe, wherein the liquid outlet end of the liquid inlet pipe is respectively connected to the liquid inlet of the first motor and the second motor, wherein the liquid inlet end of the liquid outlet pipe is respectively connected to the liquid outlet of the first motor and the second motor, wherein the first direction, the second direction and the third direction are orthogonal to each other.

[0006] According to the drive axle assembly of the embodiment of the present invention, the liquid inlet pipe and the liquid outlet pipe of the cooling pipe module are arranged on one side of the drive axle in the third direction, thereby reducing the possibility of leakage of the liquid inlet pipe and the liquid outlet pipe due to pulling, reducing the probability of friction between the liquid inlet pipe and the liquid outlet pipe and the surrounding components, and avoiding the problems of wear and leakage of the liquid inlet pipe and the liquid outlet pipe due to long-term friction.

[0007] According to some embodiments of the present invention, the liquid inlet pipe includes a first liquid inlet section, a second liquid inlet section and a third liquid inlet section which are connected to each other, and the liquid outlet end of the first liquid inlet section is respectively connected to the liquid inlets of the first motor and the second motor; the liquid outlet pipe includes a first liquid outlet section, a second liquid outlet section and a third liquid outlet section which are connected to each other, and the liquid inlet end of the first liquid outlet section is respectively connected to the liquid outlets of the first motor and the second motor; wherein the second liquid inlet section and the second liquid outlet section are both U-shaped rubber hoses.

[0008] According to some embodiments of the present invention, the second liquid inlet section and the second liquid outlet section are arranged in parallel and spaced apart along the first direction, and the minimum distance between the second liquid inlet section and the second liquid outlet section in the first direction is L, wherein L satisfies: 15mm≤L≤20mm.

[0009] According to some embodiments of the present invention, the hardness of the first liquid inlet section and the third liquid inlet section is greater than the hardness of the second liquid inlet section; the hardness of the first liquid outlet section and the third liquid outlet section is greater than the hardness of the second liquid outlet section.

[0010] According to some embodiments of the present invention, the drive axle assembly further includes: a first buffer protection member, which is sleeved on the outer periphery of the second liquid inlet section; and a second buffer protection member, which is sleeved on the outer periphery of the second liquid outlet section.

[0011] According to some embodiments of the present invention, the drive axle assembly further includes: a first fixed bracket, the first fixed bracket is connected to the drive axle, the first liquid inlet section passes through the first fixed bracket and is connected to the second liquid inlet section, and the first liquid outlet section passes through the first fixed bracket and is connected to the second liquid outlet section.

[0012] According to some embodiments of the present invention, the third liquid inlet section includes a first sub-liquid inlet section and a second sub-liquid inlet section connected to each other, the first sub-liquid inlet section extends along the first direction and is connected to the second liquid inlet section, and the second sub-liquid inlet section extends along the second direction; the third liquid outlet section includes a first sub-liquid outlet section and a second sub-liquid outlet section connected to each other, the first sub-liquid outlet section extends along the first direction and is connected to the second liquid outlet section, and the second sub-liquid outlet section extends along the second direction.

[0013] According to some embodiments of the present invention, the drive axle assembly further includes: a second fixed bracket, one end of the second fixed bracket is connected to the drive axle, and the other end of the second fixed bracket is connected to the second sub-liquid inlet section and the second sub-liquid outlet section.

[0014] According to some embodiments of the present invention, the drive axle assembly further includes: a reinforcing plate connected to a side of the first sub-liquid inlet section and the first sub-liquid outlet section adjacent to the drive axle.

[0015] A vehicle according to an embodiment of a second aspect of the present invention comprises a drive axle assembly according to an embodiment of the first aspect of the present invention.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic diagram of a drive axle assembly according to an embodiment of the present invention; Figure 2 is a top view of a drive axle assembly according to an embodiment of the present invention; Figure 3 It is an assembly diagram of a drive axle assembly and a vehicle frame according to an embodiment of the present invention.

[0019] Description of reference numerals: 100. Drive axle assembly; 10. Drive axle; 20. First motor; 30. Second motor; 40. Cooling pipe module; 41. Liquid inlet pipe; 411. First liquid inlet section; 412. Second liquid inlet section; 413. Third liquid inlet section; 4131. First sub-liquid inlet section; 4132. Second sub-liquid inlet section; 42. Liquid outlet pipe; 421. First liquid outlet section; 422. Second liquid outlet section; 423. Third liquid outlet section; 4231. First sub-liquid outlet section; 4232. Second sub-liquid outlet section; 50. First buffer protection member; 60. Second buffer protection member; 70. First fixed bracket; 80. Second fixed bracket; 90. Reinforcement plate; 200. Frame. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 3 A drive axle assembly 100 according to an embodiment of a first aspect of the present invention will be described.

[0021] like Figure 1-Figure 3As shown, the drive axle assembly 100 according to the first embodiment of the present invention includes: a drive axle 10, a first motor 20, a second motor 30 and a cooling circuit module 40. The first direction of the drive axle 10 (for example, Figure 1 The first motor 20 and the second motor 30 are respectively arranged on the drive axle 10 in the second direction (for example, Figure 1 The cooling pipe module 40 is provided on both sides of the drive axle 10 in the third direction (for example, Figure 1 The cooling pipe module 40 includes a liquid inlet pipe 41 and a liquid outlet pipe 42. The liquid outlet end of the liquid inlet pipe 41 is connected to the liquid inlets of the first motor 20 and the second motor 30 respectively, and the liquid inlet end of the liquid outlet pipe 42 is connected to the liquid outlets of the first motor 20 and the second motor 30 respectively. The first direction, the second direction and the third direction are orthogonal to each other.

[0022] It should be noted that the drive axle 10 may be an electric drive axle, and the present application does not impose any specific limitation on this. The first direction may be the length direction of the drive axle 10 , the second direction may be the width direction of the drive axle 10 , and the third direction may be the height direction of the drive axle 10 .

[0023] For example, in Figure 1-Figure 3 In the example, when the drive axle 10 is connected to the wheel, the drive axle 10 and the cooling pipe module 40 are located below the vehicle frame 200, and the cooling pipe module 40 is located between the drive axle 10 and the frame 200. When the vehicle is traveling on an uneven road and the drive axle 10 bounces up and down with the suspension, the cooling pipe module 40 can only bounce up and down between the drive axle 10 and the frame 200. The overall range of motion of the cooling pipe module 40 is relatively controllable, reducing the possibility of water leakage due to excessive pulling of the liquid inlet pipe 41 and the liquid outlet pipe 42.

[0024] Moreover, the cooling pipe module 40 is arranged on one side of the drive axle 10 in the third direction, so that the length directions of the inlet pipe 41 and the outlet pipe 42 are roughly perpendicular to the third direction (i.e., the height direction of the drive axle 10), that is, the stretching and compression directions of the inlet pipe 41 and the outlet pipe 42 are at a certain angle to the bouncing direction of the drive axle 10. When the drive axle 10 bounces up and down with the suspension, the inlet pipe 41 and the outlet pipe 42 are bent and deformed in the third direction to buffer the pulling force generated by the bouncing of the drive axle 10, rather than being stretched and compressed along the length directions of the inlet pipe 41 and the outlet pipe 42, thereby reducing the possibility of water leakage of the inlet pipe 41 and the outlet pipe 42 due to pulling. In addition, the liquid inlet pipe 41 and the liquid outlet pipe 42 only produce bending deformation in the third direction, and the travel range of the liquid inlet pipe 41 and the liquid outlet pipe 42 is small, which reduces the probability of friction between the liquid inlet pipe 41 and the liquid outlet pipe 42 and the surrounding components, and avoids the liquid inlet pipe 41 and the liquid outlet pipe 42 from causing wear, leakage and other problems due to long-term friction.

[0025] According to the drive axle assembly 100 of the embodiment of the present invention, by arranging the liquid inlet pipe 41 and the liquid outlet pipe 42 of the cooling pipe module 40 on one side of the drive axle 10 in the third direction, the possibility of leakage of the liquid inlet pipe 41 and the liquid outlet pipe 42 due to pulling is reduced, and the probability of friction between the liquid inlet pipe 41 and the liquid outlet pipe 42 and the surrounding components is reduced, thereby avoiding the problems of wear and leakage of the liquid inlet pipe 41 and the liquid outlet pipe 42 due to long-term friction.

[0026] Further, the liquid inlet pipe 41 includes a first liquid inlet section 411, a second liquid inlet section 412 and a third liquid inlet section 413 connected to each other, and the liquid outlet end of the first liquid inlet section 411 is respectively connected to the liquid inlets of the first motor 20 and the second motor 30. The liquid outlet pipe 42 includes a first liquid outlet section 421, a second liquid outlet section 422 and a third liquid outlet section 423 connected to each other, and the liquid inlet end of the first liquid outlet section 421 is respectively connected to the liquid outlets of the first motor 20 and the second motor 30. Among them, the second liquid inlet section 412 and the second liquid outlet section 422 are both U-shaped hoses.

[0027] For example, in Figure 1 In the example, the first liquid inlet section 411 and the first liquid outlet section 421 both extend along the length direction of the drive bridge 10, the main section of the second liquid inlet section 412 extends approximately along the width direction of the drive bridge 10, and both sides of the main section of the second liquid inlet section 412 extend along the length direction of the drive bridge 10, so that the second liquid inlet section 412 has a U-shaped structure. Similarly, the main section of the second liquid outlet section 422 extends along the width direction of the drive bridge 10, and both sides of the main section of the second liquid outlet section 422 extend along the length direction of the drive bridge 10, so that the second liquid outlet section 422 has a U-shaped structure.

[0028] When the first motor 20 and the second motor 30 need to be cooled, the coolant first flows into the third liquid inlet section 413 of the liquid inlet pipe 41, and enters the first liquid inlet section 411 through the second liquid inlet section 412, and then flows from the liquid outlet end of the first liquid inlet section 411 and the liquid inlet of the first motor 20 and the second motor 30 into the first motor 20 and the second motor 30. When the operating temperature of the first motor 20 and the second motor 30 reaches a preset value, the coolant flows into the first liquid outlet section 421 from the liquid outlet of the first motor 20 and the second motor 30 and the liquid inlet end of the first liquid outlet section 421, and enters the third liquid outlet section 423 through the second liquid outlet section 422, thereby completing the cooling of the first motor 20 and the second motor 30.

[0029] Since the U-shaped hose can produce a certain elastic deformation, when the drive axle assembly 100 bounces up and down with the frame 200 on the uneven road surface, the U-shaped hose can absorb and buffer the pulling force generated by the up and down jumping of the drive axle 10 on the inlet pipe 41 and the outlet pipe 42 through its own deformation, avoiding excessive pulling force at the joint of the inlet pipe 41 and the outlet pipe 42, thereby reducing the risk of joint leakage caused by pulling. Moreover, the inlet pipe 41 and the outlet pipe 42 are bent into a U shape, so that the inlet pipe 41 and the outlet pipe 42 can reserve enough length. When the drive jumps up and down to the maximum stroke, the inlet pipe 41 and the outlet pipe 42 still have enough expansion margin, and the inlet pipe 41 and the outlet pipe 42 will not be damaged due to excessive stretching and cause leakage, or be over-extruded due to insufficient length, further reducing the risk of joint leakage caused by pulling.

[0030] In addition, in a specific implementation, the first liquid inlet section 411 is connected to the liquid inlets of the first motor and the second motor 30 through a tee, and the liquid inlet end of the first liquid outlet section 421 is connected to the liquid outlets of the first motor 20 and the second motor 30 through a tee, thereby simplifying the two groups of interfaces into one group of water inlet and outlet interfaces. The first liquid inlet section 411 and the first liquid outlet section 421 can be pre-installed on the drive axle 10. When loading the vehicle, it is only necessary to connect the U-shaped hose to the first liquid inlet section 411 and the first liquid outlet section 421, thereby reducing the installation time of the water inlet pipe and the water outlet pipe.

[0031] Furthermore, the second liquid inlet section 412 and the second liquid outlet section 422 are arranged in parallel and spaced apart along the first direction to avoid mutual wear between the second liquid inlet section 412 and the second liquid outlet section 422. The minimum distance between the second liquid inlet section 412 and the second liquid outlet section 422 in the first direction is L, wherein L satisfies: 15mm≤L≤20mm.

[0032] When L is less than 15 mm, since the minimum distance between the second liquid inlet section 412 and the second liquid outlet section 422 is too small, when the drive axle assembly 100 jumps up and down with the frame 200 on an uneven road surface, the liquid inlet pipe 41 and the liquid outlet pipe 42 move accordingly, and the second liquid inlet section 412 and the second liquid outlet section 422 may still contact and rub against each other. Long-term contact and friction will accelerate the wear of the liquid inlet pipe 41 and the liquid outlet pipe 42, reduce the service life of the liquid inlet pipe 41 and the liquid outlet pipe 42, and increase the risk of leakage. Moreover, a too small distance will limit the operating space, making it inconvenient for staff to install and repair the liquid inlet pipe 41 and the liquid outlet pipe 42. When L is greater than 20 mm, the minimum distance between the second liquid inlet section 412 and the second liquid outlet section 422 is too large. In order to meet the excessive spacing requirement, the length of the hose may be increased accordingly, increasing the material cost of the liquid inlet pipe 41 and the liquid outlet pipe 42. Moreover, such a setting is not conducive to the overall compactness and rationality of the layout of the drive axle assembly 100.

[0033] Therefore, by setting the minimum distance L between the second liquid inlet section 412 and the second liquid outlet section 422 in the first direction within the range of 15mm≤L≤20mm, wear caused by mutual contact and friction between the second liquid inlet section 412 and the second liquid outlet section 422 can be avoided, the service life of the liquid inlet pipe 41 and the liquid outlet pipe 42 can be extended, the risk of leakage of the liquid inlet pipe 41 and the liquid outlet pipe 42 can be avoided, and the material cost of the liquid inlet pipe 41 and the liquid outlet pipe 42 can be reduced, which is beneficial to the overall compactness and reasonable layout of the drive axle assembly 100.

[0034] According to some embodiments of the present invention, the hardness of the first liquid inlet section 411 and the third liquid inlet section 413 is greater than the hardness of the second liquid inlet section 412. The hardness of the first liquid outlet section 421 and the third liquid outlet section 423 is greater than the hardness of the second liquid outlet section 422.

[0035] In specific implementation, one end of the first liquid inlet section 411 and the third liquid inlet section 413 are both extended into the second liquid inlet section 412 for support, and one end of the first liquid outlet section 421 and the third liquid outlet section 423 are extended into the second liquid outlet section 422 for support. Such an arrangement reduces the suspended length of the second liquid inlet section 412 and the second liquid outlet section 422 (rubber hose), increases the rigidity of the rubber hose, avoids mutual wear between the second liquid inlet section 412 and the second liquid outlet section 422 and the surrounding components, ensures the service life of the second liquid inlet section 412 and the second liquid outlet section 422, and avoids the risk of leakage of the second liquid inlet section 412 and the second liquid outlet section 422. Moreover, the second liquid inlet section 412 and the second liquid outlet section 422 adopt U-shaped rubber hoses. The softer material can adapt to the jumping of the drive axle 10, and the first liquid inlet section 411, the third liquid inlet section 413, the first liquid outlet section 421 and the third liquid outlet section 423 with greater hardness can be matched with the softer U-shaped rubber hose, which not only ensures the flexibility of the second liquid inlet section 412 and the second liquid outlet section 422, but also can provide stable connection and support, so that the cooling pipe module 40 can meet dynamic requirements while improving the stability of the overall structure.

[0036] It should be noted that the first liquid inlet section 411, the third liquid inlet section 413, the first liquid outlet section 421 and the third liquid outlet section 423 may be steel pipes, and the present application does not impose any specific limitation on this.

[0037] In some optional embodiments, the drive axle assembly 100 further includes: a first buffer protection member 50 and a second buffer protection member 60. The first buffer protection member 50 is sleeved on the outer periphery of the second liquid inlet section 412. The second buffer protection member 60 is sleeved on the outer periphery of the second liquid outlet section 422. In this way, the first buffer protection member 50 and the second buffer protection member 60 can effectively buffer the impact force of the bouncing of the drive axle 10 on the second liquid inlet section 412 and the second liquid outlet section 422, reduce the probability of the second liquid inlet section 412 and the second liquid outlet section 422 colliding with other components due to vibration, avoid the second liquid inlet section 412 and the second liquid outlet section 422 from being worn and squeezed, and extend the service life of the hose. Moreover, after the hose is filled with coolant, gravity will cause the second liquid inlet section 412 and the second liquid outlet section 422 to sag, and the second liquid inlet section 412 and the second liquid outlet section 422 are prone to friction with the bottom components, while the first buffer protection member 50 and the second buffer protection member 60 play a certain supporting role on the second liquid inlet section 412 and the second liquid outlet section 422, preventing the second liquid inlet section 412 and the second liquid outlet section 422 from sagging, ensuring the stability of the coolant flow path, and facilitating the normal operation of the cooling pipeline module 40. In addition, the first buffer protection member 50 and the second buffer protection member 60 can reduce the movement amplitude of the hose, thereby making the coolant flow in the second liquid inlet section 412 and the second liquid outlet section 422 more stable.

[0038] It should be noted that the first buffer protection member 50 and the second buffer protection member 60 may be springs, and the present application does not impose any specific limitation on this.

[0039] According to some embodiments of the present invention, the drive axle assembly 100 further includes: a first fixed bracket 70, the first fixed bracket 70 is connected to the drive axle 10, the first liquid inlet section 411 passes through the first fixed bracket 70 and is connected to the second liquid inlet section 412, and the first liquid outlet section 421 passes through the first fixed bracket 70 and is connected to the second liquid outlet section 422.

[0040] For example, in Figure 1In the example, the first fixed bracket 70 is roughly L-shaped plate-shaped, and the bottom of the first fixed bracket 70 is fixed on the drive axle 10. The first fixed bracket 70 can provide stable support for the first liquid inlet section 411 and the first liquid outlet section 421, so that the first liquid inlet section 411 and the first liquid outlet section 421 can support the second liquid inlet section 412 and the second liquid outlet section 422 respectively, thereby avoiding the second liquid inlet section 412 and the second liquid outlet section 422 from rubbing with the surrounding parts due to shaking, reducing the risk of wear and leakage of the second liquid inlet section 412 and the second liquid outlet section 422. In addition, the first fixed bracket provides a positioning point for the installation of the cooling pipeline. The staff can install the first liquid inlet section 411 and the first liquid outlet section 421 to the specified position through the first fixed bracket 70, and connect them with the second liquid inlet section 412 and the second liquid outlet section 422, which reduces the difficulty of installation and improves the installation efficiency.

[0041] According to some embodiments of the present invention, the third liquid inlet section 413 includes a first liquid inlet sub-section 4131 and a second liquid inlet sub-section 4132 connected to each other, the first liquid inlet sub-section 4131 extends along the first direction and communicates with the second liquid inlet section 412, and the second liquid inlet sub-section 4132 extends along the second direction. The third liquid outlet section 423 includes a first liquid outlet sub-section 4231 and a second liquid outlet sub-section 4232 connected to each other, the first liquid outlet sub-section 4231 extends along the first direction and communicates with the second liquid outlet section 422, and the second liquid outlet sub-section 4232 extends along the second direction.

[0042] like Figure 1 As shown, the third liquid inlet section 413 and the third liquid outlet section 423 are L-shaped tubular structures, the first sub-liquid inlet section 4131 extends along the first direction (the length direction of the drive axle 10), and can be arranged along the length direction of the drive axle 10, making full use of the space in this direction, and the second sub-liquid inlet section 4132 extends along the second direction (the width direction of the drive axle 10), making full use of the space in this direction, thereby achieving a compact and reasonable layout and improving the space utilization of the entire vehicle.

[0043] According to some other embodiments of the present invention, the drive axle assembly 100 further includes: a second fixed bracket 80 , one end of which is connected to the drive axle 10 , and the other end of which is connected to the second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232 .

[0044] like Figure 1As shown, the second fixing bracket 80 is located below the second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232 in the third direction, and is fixed to the inner side of the longitudinal beam of the vehicle frame 200 by bolts. The second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232 are fixed to the second fixing bracket 80 by welding. The second fixing bracket 80 can provide stable support for the second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232, so that the second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232 respectively support the second liquid inlet section 412 and the second liquid outlet section 422, thereby avoiding the friction between the second liquid inlet section 412 and the second liquid outlet section 422 and the surrounding parts due to shaking, and reducing the risk of wear and leakage of the second liquid inlet section 412 and the second liquid outlet section 422. In addition, the setting of the second fixing bracket 80 makes full use of the space below the second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232 in the third direction, and improves the compactness and rationality of the layout of the drive axle assembly 100.

[0045] According to some further embodiments of the present invention, the drive axle assembly 100 further includes a reinforcing plate 90 connected to a side of the first liquid inlet sub-segment 4131 and the first liquid outlet sub-segment 4231 adjacent to the drive axle 10 .

[0046] like Figure 1 As shown, the reinforcing plate 90 is located below the first sub-liquid inlet section 4131 and the first sub-liquid outlet section 4231 in the third direction, and the two ends of the reinforcing plate 90 in the second direction are bent and arranged to abut against the outer peripheral surfaces of the first sub-liquid inlet section 4131 and the first sub-liquid outlet section 4231, and the first sub-liquid inlet section 4131 and the first sub-liquid outlet section 4231 are fixed to the reinforcing plate 90 by welding. The arrangement of the reinforcing plate 90 further provides stable support for the second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232, balances the force and reduces the amplitude, and avoids the second sub-liquid inlet section 4132 and the second sub-liquid outlet section 4232 from shaking due to being suspended, so as to play a stable supporting role for the second liquid inlet section 412 and the second liquid outlet section 422, thereby avoiding the friction between the second liquid inlet section 412 and the second liquid outlet section 422 and the surrounding components due to shaking, and reducing the risk of wear and leakage of the second liquid inlet section 412 and the second liquid outlet section 422.

[0047] It should be noted that the cooling pipe module 40 of the embodiment of the present invention is not only suitable for different vehicle types such as traction, dumping, and mixing, but can also be directly used for the layout development of single-bridge and double-bridge vehicles, which simplifies the design and reduces the development cycle and cost.

[0048] A vehicle (not shown) according to an embodiment of a second aspect of the present invention comprises a drive axle assembly 100 according to an embodiment of the first aspect of the present invention.

[0049] The vehicle according to the embodiment of the present invention adopts the above-mentioned drive axle assembly 100, thereby improving the working stability of the whole vehicle, enhancing the compactness and rationality of the whole vehicle layout, simplifying the design, and reducing the development cycle and cost.

[0050] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0054] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A drive axle assembly, characterized in that: include: A drive axle, both ends of the drive axle in a first direction being suitable for connection with wheels; a first motor and a second motor, wherein the first motor and the second motor are respectively arranged on both sides of the drive axle in a second direction; A cooling pipe module, wherein the cooling pipe module is arranged on one side of the drive axle in the third direction, and the cooling pipe module includes a liquid inlet pipe and a liquid outlet pipe, the liquid outlet end of the liquid inlet pipe is respectively connected to the liquid inlets of the first motor and the second motor, and the liquid inlet end of the liquid outlet pipe is respectively connected to the liquid outlets of the first motor and the second motor, and the first direction, the second direction and the third direction are orthogonal to each other.

2. The drive axle assembly according to claim 1, characterized in that: The liquid inlet pipe comprises a first liquid inlet section, a second liquid inlet section and a third liquid inlet section which are connected to each other, and the liquid outlet end of the first liquid inlet section is respectively connected to the liquid inlets of the first motor and the second motor; The liquid outlet pipe comprises a first liquid outlet section, a second liquid outlet section and a third liquid outlet section which are connected to each other, and a liquid inlet end of the first liquid outlet section is respectively connected to the liquid outlets of the first motor and the second motor; Wherein, the second liquid inlet section and the second liquid outlet section are both U-shaped rubber hoses.

3. The drive axle assembly according to claim 2, characterized in that: The second liquid inlet section and the second liquid outlet section are arranged in parallel and spaced apart along the first direction, and the minimum distance between the second liquid inlet section and the second liquid outlet section in the first direction is L, wherein L satisfies: 15 mm≤L≤20 mm.

4. The drive axle assembly according to claim 2, characterized in that: The hardness of the first liquid inlet section and the third liquid inlet section are both greater than the hardness of the second liquid inlet section; The hardness of the first liquid outlet section and the third liquid outlet section is greater than the hardness of the second liquid outlet section.

5. The drive axle assembly according to claim 2, characterized in that: Also includes: a first buffer protection member, the first buffer protection member being sleeved on the outer periphery of the second liquid inlet section; A second buffer protection member is sleeved on the outer periphery of the second liquid outlet section.

6. The drive axle assembly according to any one of claims 2 to 5, characterized in that: Also includes: A first fixed bracket is connected to the driving bridge, the first liquid inlet section passes through the first fixed bracket and is connected to the second liquid inlet section, and the first liquid outlet section passes through the first fixed bracket and is connected to the second liquid outlet section.

7. The drive axle assembly according to any one of claims 2 to 5, characterized in that: The third liquid inlet section comprises a first liquid inlet sub-section and a second liquid inlet sub-section connected to each other, the first liquid inlet sub-section extends along the first direction and is connected to the second liquid inlet section, and the second liquid inlet sub-section extends along the second direction; The third liquid outlet section includes a first sub-liquid outlet section and a second sub-liquid outlet section connected to each other, the first sub-liquid outlet section extends along the first direction and is connected to the second liquid outlet section, and the second sub-liquid outlet section extends along the second direction.

8. The drive axle assembly according to claim 7, characterized in that: Also includes: A second fixed bracket, one end of the second fixed bracket is connected to the driving bridge, and the other end of the second fixed bracket is connected to the second sub-liquid inlet section and the second sub-liquid outlet section.

9. The drive axle assembly according to claim 8, characterized in that: Also includes: A reinforcing plate is connected to one side of the first sub-liquid inlet section and the first sub-liquid outlet section adjacent to the driving bridge.

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

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