Transfer case assembly and vehicle

Abstract

The utility model relates to vehicle technical field, specifically disclose split transmission assembly and vehicle, this split transmission assembly includes gearbox, transfer case and lubricating system, oil pump pumps the oil liquid in gearbox body into into the shunt pipe, the shunt pipe divides this part oil liquid into two ways, one way enters into first spray channel, another way enters into second spray channel, then respectively act on transfer gear group and split transmission gear group, lubricate transfer gear group and split transmission gear group respectively, in this process, because the pipe diameter of the shunt pipe that communicates with first spray channel is r1, the pipe diameter of the shunt pipe that communicates with second spray channel is r2, r1=k*r2, k>1, so the flow of oil liquid that enters first spray channel is greater than the oil liquid that enters second spray channel, to realize the function of adjusting flow by adjusting the pipe diameter of the shunt pipe, and then can avoid the problem that the gearbox or transfer case has excessive oil liquid or oil liquid deficiency.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a transfer transmission assembly and a vehicle. Background Technology

[0002] As the power density of modern vehicle powertrains continues to increase, the heat generated during operation also shows a significant upward trend. Excessive operating temperature accelerates lubricant aging, reduces lubrication performance, and can even cause thermal damage to internal components of the powertrain. Therefore, an efficient lubrication system has become one of the key technologies to ensure the reliable operation of the powertrain.

[0003] Traditional transmission lubrication systems primarily employ oil cooling, using oil circulation to remove heat generated by internal friction pairs. However, in the transfer case of multi-axle vehicles, the gearbox and transfer case are often integrated into a single lubrication system, neglecting to consider the distribution of oil flow between the gearbox and transfer case. This results in either excessive or insufficient oil levels in the gearbox or transfer case.

[0004] Therefore, a transfer case assembly is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a transfer case assembly and vehicle to solve the problem that in related technologies, the gearbox and transfer case are often designed as an integrated unit and share a lubrication system. However, the distribution of oil flow into the gearbox and transfer case is not considered, resulting in excessive or insufficient oil in the gearbox or transfer case.

[0006] On the one hand, this utility model provides a transfer transmission assembly, which includes:

[0007] A gearbox, the gearbox including a gearbox body and a set of transmission gears disposed within the gearbox body;

[0008] The transfer case includes a transfer case body and a transfer gear set disposed within the transfer case body, and the oil in the transfer case body can flow to the gearbox body;

[0009] The lubrication system includes an oil pump, a distribution pipe, a first spray channel, and a second spray channel. The oil pump pumps oil from the gearbox body into the first spray channel and the second spray channel through the distribution pipe. The first spray channel and the second spray channel spray the oil onto the transmission gear set and the transfer gear set, respectively. The diameter of the distribution pipe connected to the first spray channel is r1, and the diameter of the distribution pipe connected to the second spray channel is r2, where r1 = k * r2, and k > 1.

[0010] As a preferred technical solution for the transfer transmission assembly, the splitter includes a connector and a first branch. The connector includes a liquid inlet, a first liquid outlet, and a second liquid outlet that are connected in pairs. The liquid inlet is connected to the outlet of the oil pump. The first liquid outlet is connected to the first spray channel through the first branch, and the second liquid outlet is connected to the second spray channel.

[0011] The diameter of the first branch and the first liquid outlet joint is r1, and the diameter of the second liquid outlet joint is r2.

[0012] As a preferred technical solution for the transfer gear assembly, the gear set includes a first input shaft, an intermediate shaft, and a second input shaft that are sequentially spaced apart on the gearbox body along a first direction. The first input shaft, the intermediate shaft, and the second input shaft all extend along a second direction, and the first direction and the second direction are perpendicular.

[0013] The first spray channel includes a first nozzle a, a first nozzle b, a first nozzle c, and a first connecting pipe. The first nozzle a, the first nozzle b, and the first nozzle c are all disposed on a side wall of the gearbox body along the second direction. The first nozzle a, the first nozzle b, and the first nozzle c are respectively opposite to the first input shaft, the intermediate shaft, and the second input shaft. The first connecting pipe is simultaneously connected to the diverter pipe, the first nozzle a, the first nozzle b, and the first nozzle c.

[0014] As a preferred technical solution for the transfer case assembly, there are two first nozzles a, one of which faces the end face of the first input shaft, and the other of which faces the bearing sleeved on the first input shaft.

[0015] And / or, there are two first nozzles b, one of which faces the end face of the intermediate shaft, and the other of which faces the bearing sleeved on the intermediate shaft;

[0016] And / or, there are two first nozzles c, one of which faces the end face of the second input shaft, and the other of which faces the bearing sleeved on the second input shaft.

[0017] As a preferred technical solution for the transfer case assembly, the first connecting pipe includes a first connecting pipe a, a first connecting pipe b, and a first connecting pipe c. One end of the first connecting pipe a, one end of the first connecting pipe b, one end of the first connecting pipe c, and the first nozzle b are simultaneously connected. The other end of the first connecting pipe a is connected to the first nozzle a. The other end of the first connecting pipe b is connected to the splitter pipe. The other end of the first connecting pipe c is connected to the first nozzle c.

[0018] As a preferred technical solution for the transfer case assembly, the first connecting pipe b is integrated into one side wall of the gearbox body along the second direction, and the first connecting pipe a and the first connecting pipe c are respectively independently set from the gearbox body.

[0019] As a preferred technical solution for the transfer case assembly, the first spray channel further includes a first nozzle d and a first nozzle e, wherein the first nozzle d and the first nozzle e are respectively embedded in two side walls of the gearbox body along the first direction and are respectively opposite to the first input shaft and the second input shaft;

[0020] The first connecting pipe further includes a first connecting pipe d and a first connecting pipe e. The two ends of the first connecting pipe d are respectively connected to the first nozzle d and the first connecting pipe a, and the two ends of the first connecting pipe e are respectively connected to the first nozzle e and the first connecting pipe c.

[0021] As a preferred technical solution for the transfer gear assembly, the transfer gear set includes at least two transfer case shafts arranged at intervals along a third direction, the transfer case shafts extending along a second direction, and the third direction being perpendicular to the second direction;

[0022] The second spray channel includes at least two second nozzles and a second connecting pipe. The second nozzles are disposed on a side wall of the transfer box along the second direction. The at least two second nozzles correspond one-to-one with the at least two transfer box rotating shafts. The second connecting pipe is connected to both the transfer pipe and the second nozzles.

[0023] As a preferred technical solution for the transfer case assembly, the second connecting pipe is integrated into one side wall of the transfer case along the second direction, the second connecting pipe extends along the third direction and is sequentially connected to at least two second nozzles, one end of the second connecting pipe is connected to the split pipe, and the other end of the second connecting pipe is sealed.

[0024] On the other hand, this utility model provides a vehicle that includes the transfer transmission assembly in any of the above-mentioned solutions.

[0025] The beneficial effects of this utility model are as follows:

[0026] This utility model provides a transfer case assembly and a vehicle. The transfer case assembly includes a gearbox, a transfer case, and a lubrication system. The gearbox includes a gearbox body and a gear set disposed within the gearbox body. The transfer case includes a transfer case body and a transfer gear set disposed within the transfer case body. Oil in the transfer case body can flow into the gearbox body. The lubrication system includes an oil pump, a manifold, a first spray channel, and a second spray channel. The oil pump pumps oil from the gearbox body into the first spray channel and the second spray channel through the manifold. The first spray channel and the second spray channel spray oil onto the gear set and the transfer gear set, respectively. The diameter of the manifold connected to the first spray channel is r1, and the diameter of the manifold connected to the second spray channel is r2, where r1 = k * r2, and k > 1. When the lubrication system of this transfer case assembly is working, the oil pump pumps the oil from the transmission body into the manifold. The manifold divides this portion of oil into two paths: one enters the first spray channel, and the other enters the second spray channel. These paths then act on the transmission gear set and the transfer gear set respectively, providing lubrication to each. During this process, since the diameter of the manifold connected to the first spray channel is r1, and the diameter of the manifold connected to the second spray channel is r2, where r1 = k * r2 and k > 1, the flow rate of oil entering the first spray channel is greater than that entering the second spray channel. This allows for flow rate regulation by adjusting the diameter of the manifold, thereby preventing problems such as excessive or insufficient oil in the transmission or transfer case. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the transfer case assembly in an embodiment of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the transfer case assembly in an embodiment of the present invention. Figure 2 ;

[0029] Figure 3 This is a cross-sectional view of the gearbox in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the gearbox in an embodiment of the present invention.

[0031] In the picture:

[0032] X, first direction; Y, second direction; Z, third direction;

[0033] 11. Gearbox body; 121. First input shaft; 122. Intermediate shaft; 123. Second input shaft;

[0034] 21. Transfer case housing; 221. Transfer case shaft;

[0035] 31. Oil pump; 32. Radiator; 33. Diverter pipe; 331. Connector; 3311. Liquid inlet connector; 3312. First liquid outlet connector; 3313. Second liquid outlet connector; 332. First branch; 333. Main pipe; 341. First nozzle a; 342. First nozzle b; 343. First nozzle c; 344. First nozzle d; 345. First nozzle e; 3461. First connecting pipe a; 3462. First connecting pipe b; 3463. First connecting pipe c; 3464. First connecting pipe d; 3465. First connecting pipe e;

[0036] 35. Second spray channel. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] like Figures 1-4 As shown, this embodiment provides a transfer case assembly, which includes a gearbox, a transfer case, and a lubrication system. The gearbox includes a gearbox body 11 and a gear set disposed within the gearbox body 11. The top wall of the gearbox body 11 has an oil inlet. The transfer case includes a transfer case body 21 and a transfer gear set disposed within the transfer case body 21. The transfer case body 21 is disposed on the top wall of the gearbox body 11. The bottom wall of the transfer case body 21 has an oil outlet, which communicates with the oil inlet. The lubrication system includes an oil pump 31, a split pipe 33, a first spray channel, and a second spray channel 35. The oil pump 31 pumps oil from the gearbox housing 11 into the first and second spray channels 35 through the split pipe 33. The first and second spray channels 35 spray the oil onto the transmission gear set and the transfer gear set, respectively. The diameter of the split pipe 33 connected to the first spray channel is r1, and the diameter of the split pipe 33 connected to the second spray channel 35 is r2, where r1 = k * r2, and k > 1. When the lubrication system of this transfer case assembly is working, the oil pump 31 pumps oil from the gearbox housing 11 into the split pipe 33. The split pipe 33 divides this portion of oil into two paths: one path enters the first spray channel, and the other path enters the second spray channel 35, which then act on the transmission gear set and the transfer gear set, respectively, to lubricate them. During this process, since the diameter of the diversion pipe 33 connected to the first spray channel is r1 and the diameter of the diversion pipe 33 connected to the second spray channel 35 is r2, r1 = k * r2, k > 1, the flow rate of the oil entering the first spray channel is greater than that of the oil entering the second spray channel 35. This allows the flow rate to be adjusted by regulating the diameter of the diversion pipe 33, thereby avoiding the problem of excessive or insufficient oil in the gearbox or transfer case.

[0042] Optionally, the value of k is determined based on the required fluid flow rates of the transmission and transfer case. For example, the required fluid flow rate of the transmission is Q1, and the required fluid flow rate of the transfer case is Q2. therefore,

[0043]

[0044] Optionally, the lubrication system also includes a radiator 32, an oil pump 31, and a distribution pipe 33 connected in series. The radiator 32 is used to cool the oil.

[0045] Optionally, the diversion pipe 33 includes a connector 331 and a first branch 332. The connector 331 includes a liquid inlet connector 3311, a first liquid outlet connector 3312, and a second liquid outlet connector 3313 connected in pairs. The liquid inlet connector 3311 is connected to the outlet of the oil pump 31. The first liquid outlet connector 3312 is connected to the first spray channel through the first branch 332, and the second liquid outlet connector 3313 is connected to the second spray channel 35. The pipe diameter of the first branch 332 and the first liquid outlet connector 3312 is r1, and the pipe diameter of the second liquid outlet connector 3313 is r2. In this embodiment, the diversion pipe 33 is directly installed on the transfer case 21, thereby realizing the connection between the second liquid outlet connector 3313 and the second spray channel 35. At this time, the first liquid outlet connector 3312 of the diversion pipe 33 and the first spray channel on the gearbox are separated by a distance. Therefore, the first liquid outlet connector 3312 and the first spray channel on the gearbox are connected through the first branch 332. By adjusting the pipe diameters of the first branch 332 and the first liquid outlet connector 3312, as well as the pipe diameter of the second liquid outlet connector 3313, the flow rate entering the first spray channel and the second spray channel 35 can be adjusted.

[0046] Optionally, the diversion pipe 33 also includes a main pipe 333, one end of which is connected to the liquid outlet of the radiator 32, and the other end is connected to the liquid inlet connector 3311 of the diversion pipe 33.

[0047] Optionally, the transmission gear set includes a first input shaft 121, an intermediate shaft 122, and a second input shaft 123 sequentially spaced along a first direction X on the gearbox body 11, as well as a first input gear, an intermediate gear, and a second output gear. The first input shaft 121, intermediate shaft 122, and second input shaft 123 all extend along a second direction Y. The first input gear, intermediate gear, and second output gear are respectively fitted onto the first input shaft 121, intermediate shaft 122, and second input shaft 123. Both the first input gear and the second output gear mesh with the intermediate gear. Two motors respectively drive the first input shaft 121 and the second input shaft 123 to rotate, thereby outputting through the intermediate shaft 122. The first direction X and the second direction Y are perpendicular.

[0048] Optionally, the first spray channel includes a first nozzle a341, a first nozzle b342, a first nozzle c343, and a first connecting pipe. The first nozzles a341, b342, and c343 are all disposed on a side wall of the gearbox body 11 along the second direction Y. The first nozzles a341, b342, and c343 are respectively opposite to the first input shaft 121, the intermediate shaft 122, and the second input shaft 123. The first connecting pipe is simultaneously connected to the diverter pipe 33, the first nozzles a341, b342, and c343. In this embodiment, the oil entering the first connecting pipe is sprayed through the first nozzles a341, b342, and c343 onto the first input shaft 121, the intermediate shaft 122, and the second input shaft 123 to lubricate and cool the bearings and gears on the first input shaft 121, the intermediate shaft 122, and the second input shaft 123.

[0049] Optionally, two first nozzles a341 are provided. One first nozzle a341 is opposite to the end face of the first input shaft 121, and the other first nozzle a341 is opposite to the bearing sleeved on the first input shaft 121. In this embodiment, this arrangement allows the first nozzle a341 opposite to the end face of the first input shaft 121 to lubricate the first input shaft 121, while the other first nozzle a341 opposite to the bearing sleeved on the first input shaft 121 is located between the inner and outer rings of the bearing, ensuring that the sprayed oil directly lubricates the balls.

[0050] Optionally, two first nozzles b342 are provided. One first nozzle b342 is opposite to the end face of the intermediate shaft 122, and the other first nozzle b342 is opposite to the bearing sleeved on the intermediate shaft 122. In this embodiment, this arrangement allows one first nozzle b342 opposite to the end face of the intermediate shaft 122 to lubricate the intermediate shaft 122, while the other first nozzle b342 opposite to the bearing sleeved on the intermediate shaft 122 is located between the inner and outer rings of the bearing, ensuring that the sprayed oil directly lubricates the balls.

[0051] Optionally, two first nozzles c343 are provided. One first nozzle c343 faces the end face of the second input shaft 123, and the other first nozzle c343 faces the bearing sleeved on the second input shaft 123. In this embodiment, this arrangement allows the first nozzle c343 facing the end face of the second input shaft 123 to lubricate the second input shaft 123, while the other first nozzle c343 facing the bearing sleeved on the second input shaft 123 is located between the inner and outer rings of the bearing, ensuring that the sprayed oil directly lubricates the balls.

[0052] Optionally, the first connecting pipe includes a3461, b3462, and c3463. One end of the first connecting pipe a3461, one end of the first connecting pipe b3462, one end of the first connecting pipe c3463, and the first nozzle b342 are simultaneously connected. The other end of the first connecting pipe a3461 is connected to the first nozzle a341, the other end of the first connecting pipe b3462 is connected to the diverter pipe 33, and the other end of the first connecting pipe c3463 is connected to the first nozzle c343. In this embodiment, the oil first enters the first connecting pipe b3462, and then is divided into three parts at the position of the first nozzle b342. The first part enters the first connecting pipe a3461 and is then sprayed out from the first nozzle a341. The second part is sprayed directly from the first nozzle b342, and the third part enters the first connecting pipe c3463 and is then sprayed out from the first nozzle c343.

[0053] Optionally, the first connecting pipe b3462 is integrated into one side wall of the gearbox body 11 along the second direction Y, and the first connecting pipes a3461 and c3463 are respectively independently disposed from the gearbox body 11. In this embodiment, this arrangement facilitates both the processing and manufacturing of the gearbox body 11 and the maintenance of the first connecting pipes.

[0054] Optionally, the first spray channel further includes a first nozzle d344 and a first nozzle e345, which are respectively embedded in two side walls of the gearbox body 11 along the first direction X and are respectively opposite to the first input shaft 121 and the second input shaft 123; the first connecting pipe further includes a first connecting pipe d3464 and a first connecting pipe e3465, with the two ends of the first connecting pipe d3464 communicating with the first nozzle d344 and the first connecting pipe a3461, respectively, and the two ends of the first connecting pipe e3465 communicating with the first nozzle e345 and the first connecting pipe c3463, respectively. In this embodiment, the oil entering the first connecting pipe a3461 is divided into two parts: one part is sprayed directly from the first nozzle a341, and the other part enters the first connecting pipe d3464, and then is sprayed from the first nozzle d344 towards the peripheral wall of the first input shaft 121 and the first input gear. The oil entering the first connecting pipe c3463 is divided into two parts. One part is sprayed directly from the first nozzle c343, and the other part enters the first connecting pipe e3465, and then is sprayed from the first nozzle e345 onto the peripheral wall of the second input shaft 123 and the second input gear.

[0055] Optionally, the transfer gear set includes at least two transfer case shafts 221 spaced apart along a third direction Z. The transfer case shafts 221 extend along a second direction Y, with the third direction Z and the second direction Y perpendicular. The second spray channel 35 includes at least two second nozzles and a second connecting pipe. The second nozzles are disposed on a side wall of the transfer case 21 along the second direction Y, with each of the at least two second nozzles corresponding to at least two transfer case shafts 221. The second connecting pipe is simultaneously connected to the diversion pipe 33 and the second nozzles. In this embodiment, the oil in the diversion pipe 33 flows to the second nozzles through the second connecting pipe and is then sprayed out through the second nozzles to lubricate and cool the transfer case shafts 221, the gears on the transfer case shafts 221, and the bearings on the transfer case shafts 221.

[0056] Optionally, the second connecting pipe is integrated into a side wall of the transfer housing 21 along the second direction Y. The second connecting pipe extends along the third direction Z and communicates sequentially with at least two second nozzles. One end of the second connecting pipe is connected to the diversion pipe 33, and the other end of the second connecting pipe is sealed. In this embodiment, one end of the second connecting pipe is connected to the second liquid outlet connector 3313. The second connecting pipe is provided with at least two connecting holes along the third direction Z. At least two second nozzles correspond to and communicate with at least two connecting holes. The oil entering the second connecting pipe enters the corresponding second nozzle through the at least two connecting holes and is finally sprayed out from the at least two second nozzles.

[0057] Specifically, the preset included angle α between the first direction and the second direction has a value of 0°≤α≤90°.

[0058] Optionally, the oil pump 31 can be an electronic oil pump, or in other embodiments, a combination of an electric motor and a gear pump.

[0059] This embodiment also provides a vehicle, including the transfer case assembly described above.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transfer case transmission assembly, characterized in that, include: A gearbox, the gearbox including a gearbox body (11) and a set of transmission gears disposed within the gearbox body (11); The transfer case includes a transfer case body (21) and a transfer gear set disposed in the transfer case body (21), and the oil in the transfer case body (21) can flow into the gearbox body (11); The lubrication system includes an oil pump (31), a manifold (33), a first spray channel, and a second spray channel (35). The oil pump (31) pumps the oil in the gearbox body (11) into the first spray channel and the second spray channel (35) through the manifold (33). The first spray channel and the second spray channel (35) spray the oil onto the transmission gear set and the transfer gear set, respectively. The diameter of the manifold (33) connected to the first spray channel is r1, and the diameter of the manifold (33) connected to the second spray channel (35) is r2. r1 = k * r2, k > 1.

2. The transfer case assembly according to claim 1, characterized in that, The diversion pipe (33) includes a connector (331) and a first branch (332). The connector (331) includes a liquid inlet connector (3311), a first liquid outlet connector (3312), and a second liquid outlet connector (3313) that are connected in pairs. The liquid inlet connector (3311) is connected to the liquid outlet of the oil pump (31). The first liquid outlet connector (3312) is connected to the first spray channel through the first branch (332). The second liquid outlet connector (3313) is connected to the second spray channel (35). The diameter of the first branch (332) and the first liquid outlet connector (3312) is r1, and the diameter of the second liquid outlet connector (3313) is r2.

3. The transfer case assembly according to claim 1, characterized in that, The transmission gear set includes a first input shaft (121), an intermediate shaft (122), and a second input shaft (123) arranged sequentially at intervals along a first direction (X) on the gearbox body (11). The first input shaft (121), the intermediate shaft (122), and the second input shaft (123) all extend along a second direction (Y), and the first direction (X) and the second direction (Y) are perpendicular. The first spray channel includes a first nozzle a (341), a first nozzle b (342), a first nozzle c (343) and a first connecting pipe. The first nozzle a (341), the first nozzle b (342) and the first nozzle c (343) are all disposed on a side wall of the gearbox body (11) along the second direction (Y). The first nozzle a (341), the first nozzle b (342) and the first nozzle c (343) are respectively opposite to the first input shaft (121), the intermediate shaft (122) and the second input shaft (123). The first connecting pipe is simultaneously connected to the diversion pipe (33), the first nozzle a (341), the first nozzle b (342) and the first nozzle c (343).

4. The transfer case assembly according to claim 3, characterized in that, There are two first nozzles a (341), one of which is opposite to the end face of the first input shaft (121), and the other is opposite to the bearing sleeved on the first input shaft (121). And / or, there are two first nozzles b (342), one of which is opposite to the end face of the intermediate shaft (122), and the other is opposite to the bearing sleeved on the intermediate shaft (122); And / or, there are two first nozzles c (343), one of which is opposite to the end face of the second input shaft (123), and the other of which is opposite to the bearing sleeved on the second input shaft (123).

5. The transfer case assembly according to claim 3, characterized in that, The first connecting pipe includes a first connecting pipe a (3461), a first connecting pipe b (3462), and a first connecting pipe c (3463). One end of the first connecting pipe a (3461), one end of the first connecting pipe b (3462), one end of the first connecting pipe c (3463), and the first nozzle b (342) are simultaneously connected. The other end of the first connecting pipe a (3461) is connected to the first nozzle a (341). The other end of the first connecting pipe b (3462) is connected to the diverter pipe (33). The other end of the first connecting pipe c (3463) is connected to the first nozzle c (343).

6. The transfer case assembly according to claim 5, characterized in that, The first connecting pipe b (3462) is integrated into one side wall of the gearbox body (11) along the second direction (Y), and the first connecting pipe a (3461) and the first connecting pipe c (3463) are respectively independently arranged from the gearbox body (11).

7. The transfer case assembly according to claim 5, characterized in that, The first spray channel further includes a first nozzle d (344) and a first nozzle e (345), the first nozzle d (344) and the first nozzle e (345) are respectively embedded in two side walls of the gearbox body (11) along the first direction (X) and are respectively opposite to the first input shaft (121) and the second input shaft (123); The first connecting pipe further includes a first connecting pipe d (3464) and a first connecting pipe e (3465). The two ends of the first connecting pipe d (3464) are respectively connected to the first nozzle d (344) and the first connecting pipe a (3461), and the two ends of the first connecting pipe e (3465) are respectively connected to the first nozzle e (345) and the first connecting pipe c (3463).

8. The transfer case assembly according to claim 1, characterized in that, The transfer gear set includes at least two transfer case shafts (221) arranged at intervals along a third direction (Z), the transfer case shafts (221) extending along a second direction (Y), and the third direction (Z) and the second direction (Y) being perpendicular; The second spray channel (35) includes at least two second nozzles and a second connecting pipe. The second nozzles are disposed on a side wall of the transfer box (21) along the second direction (Y). At least two second nozzles are corresponding to at least two transfer box shafts (221). The second connecting pipe is connected to both the diversion pipe (33) and the second nozzles.

9. The transfer case assembly according to claim 8, characterized in that, The second connecting pipe is integrated into one side wall of the split box (21) along the second direction (Y), the second connecting pipe extends along the third direction (Z) and communicates with at least two second nozzles in sequence, one end of the second connecting pipe is communicated with the split pipe (33), and the other end of the second connecting pipe is sealed.

10. A vehicle, characterized in that, Includes the transfer case assembly as described in any one of claims 1-9.

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