Oil guide lubricating structure, through axle and vehicle

Abstract

The utility model provides an oil guide lubricating structure, a through axle and a vehicle, and relates to the technical field of automobiles, the oil guide lubricating structure is arranged in an axle housing of the through axle, a containing cavity is formed in the axle housing, and a bearing and a driven gear are arranged in the containing cavity; the oil guide lubricating structure comprises a connecting part and a lubricating part, wherein the connecting part is fixedly connected with the inner wall of the axle housing; the oil guide part is connected with the connecting part, an oil channel is formed in the oil guide part, and the oil channel extends from one end of the driven gear to one end of the bearing; the oil collecting part is connected to one end of the oil guide part, an oil storage cavity communicated with the oil duct is formed in the oil collecting part, and the bottom of the bearing is located in the oil storage cavity. According to the oil guide lubricating structure, oil thrown out by rotation of the driven gear can be received, the oil is guided to the bottom end of the bearing, and it is guaranteed that the through axle bearing is fully lubricated.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an oil-conducting lubrication structure, a through bridge and a vehicle. Background Art

[0002] The middle bridge, also known as the through bridge, is generally connected to the rear bridge through the suspension and the frame, with car wheels installed at both ends. The function of the middle bridge is to transmit the forces in all directions between the frame or load-bearing body and the wheels. At present, the transmission principle of the middle bridge and rear bridge of 6×6 models is: the middle bridge and the rear bridge are in a series structure, the transmission shaft torque is transmitted to the planetary gear shaft of the differential between the middle bridge shafts, and then transmitted to the middle / rear half-shaft gears through the planetary gears, and then transmitted to the middle bridge and rear bridge through the transmission gears and transmission shafts respectively to complete the power transmission.

[0003] The middle axle is usually composed of a reducer assembly, axle housing assembly, brake assembly, and wheel hub brake drum assembly. Unlike the rear axle, the middle axle has not only an input end but also an output end through-shaft assembly. In order to ensure the layout angle of the transmission shaft, the position of the middle axle through-shaft is biased to the upper end, much higher than the gear oil level. The lowest point of the bearing lubrication requirement of the middle axle through-shaft is the lowest point of the steel ball, and the lowest point of the bearing steel ball is not lubricated with oil, which can easily cause bearing erosion and make abnormal noise when the vehicle is driving. Utility Model Content

[0004] In view of this, the present application aims to propose an oil-conducting lubrication structure, a through bridge and a vehicle to solve the problems of abnormal noise and bearing ablation caused by insufficient bearing lubrication in the prior art leading to early failure of the bearing.

[0005] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0006] An oil-conducting lubrication structure is arranged in a bridge housing of a through bridge, wherein an accommodating cavity is formed inside the bridge housing, and a bearing and a passive gear are arranged in the accommodating cavity; the oil-conducting lubrication structure comprises: a connecting portion fixedly connected to the inner wall of the bridge housing; an oil-conducting portion connected to the connecting portion, wherein an oil passage is formed in the oil-conducting portion, and wherein the oil passage extends from one end of the passive gear to one end of the bearing; an oil collecting portion connected to one end of the oil-conducting portion, wherein an oil storage cavity communicated with the oil passage is formed in the oil collecting portion, and the bottom of the bearing is located in the oil storage cavity.

[0007] Through the above technical solution, the connecting part is connected and fixed to the inner wall of the bridge housing to ensure sufficient strength. The oil collecting part is arranged at the bottom end of the bearing and cooperates with the position required for bearing lubrication. The oil is driven into the oil guide part through the rotation of the passive gear, so that the oil is guided to the oil collecting part through the oil channel in the oil guide part and reaches the bottom end of the bearing, ensuring that there is always enough lubricating oil at the bottom end of the bearing and ensuring that the bearing is fully lubricated.

[0008] Furthermore, the height of the oil channel gradually decreases from one end of the driven gear to one end of the bearing.

[0009] Through the above technical solution, after entering the oil channel, the oil can quickly flow from the higher end to the lower end, thereby smoothly reaching the bottom of the bearing to achieve lubrication of the bearing.

[0010] Furthermore, the oil guiding portion includes an oil guiding groove, the oil guiding groove includes an inclined section and a transition section, and the transition section is connected between the inclined section and the oil collecting portion.

[0011] Through the above technical solution, the inclined section is gradually inclined downward from one end of the passive gear to one end of the bearing, which can ensure the rapid passage of oil. The transition section is connected between the inclined section and the oil collecting part, so that the transition between the inclined section and the oil collecting part is smooth, thereby obtaining a good diversion effect.

[0012] Furthermore, the shape of the transition section is set to be an arc; the angle between the inclined section and the horizontal direction is 10°-15°.

[0013] Through the above technical solution, by setting the shape of the transition section to an arc, the transition between the inclined section and the oil collecting part is smooth; by reasonably setting the inclination angle of the inclined section, the demand for rapid passage of oil can be met.

[0014] Furthermore, the distance between one end of the oil guide groove close to the passive gear and the passive gear is 10-20 mm.

[0015] Through the above technical solution, by reasonably setting the distance between the oil guide groove and the passive gear, it can be ensured that the oil brought by the passive gear enters the oil guide groove smoothly, and at the same time will not interfere with the rotation of the passive gear and will not affect the normal operation of the passive gear.

[0016] Furthermore, the oil collecting portion includes an oil collecting groove, and the shape of the oil collecting groove is set to be arc-shaped.

[0017] Through the above technical solution, the shape of the oil collecting groove is set to be arc-shaped, which can better adapt to the shape of the bearing and ensure that the oil in the oil storage cavity can fully lubricate the bearing.

[0018] Furthermore, the oil collecting groove is clearance-matched with the bearing.

[0019] Through the above technical solution, the oil collecting tank and the bearing are clearance-fitted, and the oil collecting tank support is arranged at the bottom of the bearing, so that the oil collected in the oil collecting tank can fully lubricate the bearing.

[0020] Furthermore, the oil collecting tank includes a bottom wall and a first side wall and a second side wall connected to both sides of the bottom wall, and a notch is formed on the first side wall.

[0021] Through the above technical solution, a notch is set on the first side wall, so that the depth of the first side wall at the notch is shallower than the depth of the second side wall. After the oil enters the oil collecting tank, it can flow out from the notch of the first side wall and return to the bottom of the accommodating cavity, thereby avoiding continuous accumulation of oil in the oil collecting tank, resulting in a reduction in the amount of oil at the bottom of the accommodating cavity, affecting the lubrication of the passive gear.

[0022] Furthermore, a mounting surface for mounting the bearing is provided at the notch.

[0023] Through the above technical solution, a mounting surface is set at the notch, which can be used for installation with the bearing. The mounting surface is set as an arc surface, which can be well adapted to the shape of the bearing, further improving the installation stability between the oil collecting tank and the bearing.

[0024] Furthermore, the connecting portion includes a connecting plate, an edge of the connecting plate is provided with a flange, and the flange is fixedly connected to the bridge housing.

[0025] Through the above technical solution, by arranging a flange on the edge of the connecting plate and fixing the flange to the bridge shell, the connection area can be increased, thereby increasing the connection strength and improving the connection stability of the structure.

[0026] Furthermore, the connecting portion, the oil guiding portion and the oil collecting portion are integrally formed.

[0027] Through the above technical solution, an integrated molding process is adopted to form the connecting part, the oil guide part and the oil collecting part into a whole, which is convenient for processing and has high production efficiency, and helps to improve the strength, durability and reliability of the finished product.

[0028] Furthermore, the material of the oil-conducting lubrication structure includes steel.

[0029] Compared with the prior art, the oil-conducting lubrication structure described in this application has the following advantages:

[0030] (1) The oil-guiding lubrication structure described in the present application is arranged in the bridge housing of the through bridge, and includes a connecting part, an oil-guiding part and an oil-collecting part. By setting the connecting part, it can be connected and fixed with the inner wall of the bridge housing. By setting the oil-guiding part, the oil channel in the oil-guiding part extends from one end of the passive gear to one end of the bearing, and can receive the oil thrown out by the rotation of the passive gear and guide the oil to the bearing. By setting the oil-collecting part, an oil storage chamber connected to the oil channel is formed in the oil-collecting part, which can receive and temporarily store the oil from the oil channel, thereby realizing lubrication of the bottom of the bearing, ensuring that the bearing can be fully lubricated when driving again after being parked for a long time, and reducing the abnormal noise and bearing burning caused by early failure of the bearing due to insufficient bearing lubrication.

[0031] (2) The oil guiding lubrication structure described in the present application, the oil guiding part includes an oil guiding groove, and the oil guiding groove includes an inclined section and a transition section. The inclined section is gradually inclined downward from one end of the passive gear to one end of the bearing. By setting the inclined section, the oil can pass quickly. The transition section is connected between the inclined section and the oil collecting part, and the shape is set to be arc-shaped, which can make the transition between the inclined section and the oil collecting part smooth, reduce oil splashing, and ensure a good flow guiding effect.

[0032] (3) The oil-guiding lubrication structure described in the present application comprises an oil collecting tank comprising a bottom wall and a first side wall and a second side wall connected on both sides of the bottom wall. A notch is provided on the first side wall. By setting the notch, the depth of the first side wall at the notch is shallower than the depth of the second side wall. After the oil enters the oil collecting tank to lubricate the bearing, it can flow back to the bottom of the accommodating cavity through the notch on the first side wall in time to realize the circulation of the oil, thereby preventing the oil brought by the rotation of the passive gear from continuously accumulating in the oil collecting tank, causing a continuous decrease in the amount of oil at the bottom of the accommodating cavity, and affecting the lubrication of the passive gear.

[0033] The present application also proposes a through bridge, comprising the oil-conducting lubrication structure as described above.

[0034] The through bridge has the same advantages as the above-mentioned oil-conducting lubrication structure over the prior art, which will not be described in detail here.

[0035] The present application also proposes a vehicle, comprising the oil-conducting lubrication structure as described above, or the through bridge as described above.

[0036] The advantages of the vehicle and the above-mentioned oil-conducting lubrication structure over the prior art are the same, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0038] Figure 1 A schematic diagram showing the position of the through bridge oil filling level and the required position for bearing lubrication;

[0039] Figure 2 This is a schematic diagram of the assembly of the oil-conducting lubrication structure described in an embodiment of the present application;

[0040] Figure 3 This is a front view of the oil-guiding lubrication structure described in an embodiment of the present application;

[0041] Figure 4 It is a top view of the oil-conducting lubrication structure described in an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 1. Bridge housing; 11. Oil filling port; 2. Oil guide lubrication structure; 21. Oil guide groove; 211. Inclined section; 212. Transition section; 22. Oil collecting groove; 221. Notch; 222. Mounting surface; 23. Connecting plate; 231. Flanging; 232. Tool positioning hole; 3. Bearing; 4. Passive gear; 5. Differential. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0045] In addition, the directions or positional relationships indicated by "inside", "outside", "left", "right", "front", "rear", etc. mentioned in the embodiments of the present application are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as a limitation on the present application. In addition, relational terms such as "first" and "second" are merely used to distinguish one entity from another, and do not necessarily require or imply the existence of any such actual relationship or order between these entities, nor can they be understood as indicating or implying relative importance. In addition, in the present embodiment, the "horizontal direction" refers to the direction parallel to the axis of the passive gear.

[0046] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0047] In the related technology, the middle bridge, also called the through bridge, is generally connected to the rear axle through the suspension and the frame, with the car wheels installed at both ends. The function of the middle bridge is to transmit the forces in all directions between the frame or the load-bearing body and the wheels. Unlike the rear axle, the middle bridge not only has an input end, but also has an output end through shaft assembly. In order to ensure the layout angle of the transmission shaft, the position of the middle bridge through shaft is biased to the upper end, and the position of the oil filling port is biased to the lower end. The lowest point of the bearing lubrication requirement of the middle bridge through shaft is the lowest point of the steel ball, and the position of the through shaft bearing is much higher than the liquid level when the gear oil is filled. Figure 1 As shown, A is the liquid level when the gear oil is full, and B is the lowest point of the steel ball of the through-shaft bearing 3. The lowest point of the steel ball of the bearing 3 is not lubricated by oil, which may easily cause the bearing 3 to burn and make abnormal noise when the vehicle is running. However, the amount of lubricating oil in the bridge housing 1 cannot be too much, otherwise it is easy to cause oil leakage due to excessive oil pressure. Therefore, the problem of insufficient lubrication of the bearing 3 cannot be solved by raising the position of the oil filling port 11 and increasing the amount of oil.

[0048] In view of this, an embodiment of the present application provides an oil-conducting lubrication structure.

[0049] See also Figure 2The oil-conducting lubrication structure 2 is arranged in the bridge housing 1 of the through bridge, and a accommodating cavity is formed inside the bridge housing 1, and a bearing 3 and a passive gear 4 are arranged in the accommodating cavity; the oil-conducting lubrication structure 2 includes: a connecting part, which is fixedly connected to the inner wall of the bridge housing 1; an oil-conducting part, which is connected to the connecting part, and an oil passage is formed in the oil-conducting part, and the oil passage extends from one end of the passive gear 4 to one end of the bearing 3, and the height of the oil passage gradually decreases; an oil collecting part, which is connected to one end of the oil-conducting part close to the bearing 3, and an oil storage cavity communicated with the oil passage is formed in the oil collecting part, and the bottom of the bearing 3 is located in the oil storage cavity.

[0050] Specifically, the through bridge includes a bridge housing 1, a housing 1 has a receiving cavity formed therein, and a through shaft bearing 3, a differential 5, a driven gear 4 and other components are arranged in the housing cavity. A refueling port 11 is arranged on the bridge housing 1, and lubricating oil can be added into the receiving cavity through the refueling port 11. Figure 2 As shown, the bearing 3 is located at the upper end of the accommodating cavity, the driven gear 4 is on the side away from the bearing 3, the output end of the differential 5 is connected to the driven gear 4, and the input end of the differential 5 is connected to the driving gear outside the bridge housing 1. When the vehicle is running, the driving gear transmits power to the driven gear 4 through the differential 5, thereby driving the driven gear 4 to rotate.

[0051] The oil-guiding lubricating structure 2 is arranged between the passive gear 4 and the bearing 3, and includes a connecting part, an oil-guiding part and an oil-collecting part, wherein the connecting part is connected to the inner wall of the bridge housing 1 to realize the fixing of the oil-guiding lubricating structure 2 in the bridge housing 1, and an oil channel is formed in the oil-guiding part, and the oil channel extends from one end of the passive gear 4 to one end of the bearing 3. Specifically, the end of the oil channel close to the passive gear 4 is the oil inlet end, which is at a higher position, and the end of the oil channel close to the bearing 3 is the oil outlet end, which is at a lower position, and the height of the oil channel gradually decreases from the oil inlet end to the oil outlet end. When the passive gear 4 rotates, it will stir the lubricating oil at the bottom of the accommodating cavity, so that part of the oil is thrown into the oil inlet end of the oil channel due to centrifugal action, and then gradually flows down to the bearing 3 along the oil channel. The oil collecting part is connected to the outlet end of the oil channel of the oil-guiding part, and an oil storage chamber connected to the oil channel is formed inside it. The bottom of the bearing 3 is located in the oil storage chamber, and the oil flowing out from the oil outlet end of the oil channel can be gathered in the oil storage chamber and stay for a short time, thereby lubricating the steel ball at the bottom of the bearing 3.

[0052] Furthermore, the oil guiding portion includes an oil guiding groove 21, and the oil guiding groove 21 includes an inclined section 211 and a transition section 212. The transition section 212 is connected between the inclined section 211 and the oil collecting portion, and the shape of the transition section 212 is set to be an arc.

[0053] Specifically, the oil guide portion includes an oil guide groove 21, and the internal space of the oil guide groove 21 is used to form the oil channel. The oil guide groove 21 includes an inclined section 211 and a transition section 212, wherein the inclined section 211 is gradually inclined downward from one end of the passive gear 4 to one end of the bearing 3, which can ensure that the oil passes quickly, and the transition section 212 is connected between the inclined section 211 and the oil collecting portion, and its shape is set to be an arc, and the center of the arc is on the same straight line as the center of the bearing 3, so that the transition between the inclined section 211 and the oil collecting portion is smooth, ensuring that the oil in the inclined section 211 can be smoothly turned when flowing through the transition section 212 and thus flow into the oil collecting portion, avoiding oil splashing due to inertia, and ensuring the effect of diversion.

[0054] Furthermore, the angle between the inclined section 211 and the horizontal direction is 10°-15°.

[0055] Specifically, the inclined section 211 is arranged to be inclined downward from one end of the passive gear 4 to one end of the bearing 3. In practical applications, the inclination angle of the inclined section 211 can be reasonably set according to the distance between the bearing 3 and the passive gear 4 and the height space of the accommodating cavity. Specifically, the horizontal direction is the direction parallel to the axis of the passive gear 4, that is, Figure 2 and Figure 3 As shown in the left and right directions, as an example, in the embodiment of the present application, the angle between the inclined section 211 and the horizontal direction is set to 10°-15°, which can meet the demand for rapid passage of oil.

[0056] Furthermore, the distance between the end of the oil guide groove 21 close to the passive gear 4 and the passive gear 4 is 10-20 mm.

[0057] In practical applications, the oil inlet end position of the oil guide groove 21 needs to be reasonably set. On the one hand, the oil inlet end position of the oil guide groove 21 needs to be close to the passive gear 4 so that the oil can be smoothly brought into the oil guide groove 21 when the passive gear 4 rotates. On the other hand, the oil inlet end position cannot be too close to the passive gear 4 to avoid interfering with the movement of the passive gear 4. As an example, in the embodiment of the present application, the distance between the oil inlet end of the oil guide groove 21 and the passive gear 4 is set to 10-20mm, which can ensure that the oil can smoothly enter the oil guide groove 21 without affecting the normal operation of the passive gear 4.

[0058] Furthermore, the oil collecting portion includes an oil collecting groove 22, and the shape of the oil collecting groove 22 is set to be arc-shaped.

[0059] Specifically, the oil collecting portion includes an oil collecting groove 22, and the inner space of the oil collecting groove 22 is used to form the oil storage cavity. In order to better match the bearing 3, the shape of the oil collecting groove 22 can be set to be an arc.

[0060] Furthermore, the oil collecting groove 22 and the bearing 3 are clearance-matched.

[0061] Specifically, the size of the oil collecting groove 22 is designed to match the size of the bearing 3. The oil collecting groove 22 and the bearing 3 can be clearance-fitted. The oil collecting groove 22 is supported and arranged at the bottom of the bearing 3 so that the oil collected in the oil collecting groove 22 can fully lubricate the bearing 3.

[0062] Furthermore, the oil collecting tank 22 includes a bottom wall and a first side wall and a second side wall connected to both sides of the bottom wall, and a notch 221 is formed on the first side wall.

[0063] See also Figure 3 The oil collecting groove 22 includes a bottom wall and a first side wall and a second side wall arranged on both sides of the bottom wall, wherein a notch 221 is provided on the first side wall, and the depth of the first side wall at the notch 221 is shallower than the depth of the second side wall. When the vehicle is running, due to the continuous rotation of the passive gear 4 in the accommodating cavity, the oil inlet end of the oil guide groove 21 will continuously receive the oil brought by the rotation of the passive gear 4. If the oil in the oil guide groove 21 flows into the oil collecting groove 22 and accumulates in the oil collecting groove 22 for a long time, it will cause the amount of lubricating oil at the bottom of the accommodating cavity to continue to decrease, thereby affecting the lubrication of the passive gear 4. By providing the notch 221 on the first side wall, a larger space can be provided for the oil to flow out, and the residence time of the oil in the oil collecting groove 22 can be shortened. In this way, the oil that is swung into the oil guide groove 21 by the passive gear 4 can flow back to the bottom of the accommodating cavity through the notch 221 on the first side wall in time after flowing into the oil collecting groove 22 to lubricate the bearing 3, so as to realize the circulation of the oil and further ensure the lubrication effect of the passive gear 4 and the bearing 3.

[0064] It is understandable that the notch 221 can be provided on any one of the two side walls of the oil collecting tank 22 , and this embodiment is described by taking the notch 221 provided on the first side wall as an example.

[0065] Further, for the convenience of processing, the shape of the notch 221 in the embodiment of the present application is set to be an arc. In other embodiments, the notch 221 can also be set to be U-shaped or other shapes, and can also be composed of multiple discontinuous shapes, as long as it can provide space for the oil to flow out.

[0066] Furthermore, a mounting surface 222 for mounting the bearing 3 is provided at the notch 221 .

[0067] Specifically, the mounting surface 222 is used for mounting with the bearing 3 and is shaped as an arc-shaped surface, which can well adapt to the structural shape of the bearing 3, support the bottom of the bearing 3, and further improve the installation stability of the oil collecting tank 22 and the bearing 3.

[0068] Furthermore, the connecting portion includes a connecting plate 23 , and a flange 231 is provided on an edge of the connecting plate 23 . The flange 231 is fixedly connected to the bridge housing 1 .

[0069] For details, see Figure 3 The connecting portion includes a connecting plate 23, which is connected to a side wall of the oil guide groove 21. A flange 231 is provided on the edge of the connecting plate 23 away from the oil guide groove 21. The flange 231 can be connected and fixed to the inner wall of the bridge housing 1 by welding. By providing the flange 231, the connection area can be increased, thereby increasing the connection strength and ensuring the stability of the connection between the oil guide lubrication structure 2 and the bridge housing 1.

[0070] In this embodiment, the connecting part adopts a plate-like structure, the number is set to one, and the position is set at one end of the oil guide groove 21 close to the passive gear 4; in other embodiments, the connecting part can also be a strip-shaped, rod-shaped or other shaped structure, the number can be multiple, and can be arranged along the oil guide groove 21 in a spaced distribution manner.

[0071] Furthermore, to facilitate welding positioning, a tooling positioning hole 232 is provided on the connecting plate 23, which can cooperate with the positioning pin on the welding tooling during welding to achieve positioning of the oil-conducting lubrication structure 2, ensure the accuracy of the welding position, and improve the convenience of operation. On the other hand, the tooling positioning hole 232 can also play a role in reducing weight, making the entire oil-conducting lubrication structure 2 lighter and meeting the lightweight design requirements of the entire vehicle.

[0072] Furthermore, the connecting portion, the oil guiding portion and the oil collecting portion are integrally formed.

[0073] Specifically, the oil-guiding lubrication structure described in this embodiment can be made of steel and processed by stamping and integrated molding, so that the connecting part, the oil-guiding part and the oil-collecting part form a whole. The processing is convenient, the production efficiency is high, the finished product size is precise, the quality is stable, the integrity is high, and it has good strength and durability.

[0074] The present application also proposes a through bridge, comprising the oil-conducting lubrication structure as described above.

[0075] The through bridge includes a bridge housing 1, a receiving cavity is formed inside the bridge housing 1, and a refueling port 11 is provided on the bridge housing 1, and lubricating oil can be added into the receiving cavity through the refueling port 11. The receiving cavity is provided with a through shaft bearing 3, a differential 5, a passive gear 4 and other components, the output end of the differential 5 is connected to the passive gear 4, and the input end of the differential 5 is connected to the driving gear outside the bridge housing 1. The bearing 3 of the through shaft is arranged at an end away from the passive gear 4, and the oil guide lubrication structure 2 is fixedly connected to the inner wall of the bridge housing 1, and is located between the passive gear 4 and the bearing 3.

[0076] When the vehicle is running, the driving gear transmits power to the driven gear 4 through the differential 5, thereby driving the driven gear 4 to rotate. The driven gear 4 rotates, driving a part of the oil in the accommodating cavity to enter the oil guide lubrication structure 2. The oil is guided by the oil guide lubrication structure 2 and reaches the bottom end of the bearing 3, thereby achieving sufficient lubrication of the bearing 3.

[0077] The through bridge has the same advantages as the above-mentioned oil-conducting lubrication structure over the prior art, which will not be described in detail here.

[0078] The present application also proposes a vehicle, comprising the oil-conducting lubrication structure as described above, or the through bridge as described above.

[0079] The advantages of the vehicle and the above-mentioned oil-conducting lubrication structure over the prior art are the same, which will not be repeated here.

[0080] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An oil-conducting lubrication structure, characterized in that: The oil-conducting lubrication structure is arranged in a bridge housing (1) of a through bridge, a receiving cavity is formed inside the bridge housing (1), a bearing (3) and a driven gear (4) are arranged in the receiving cavity, and the oil-conducting lubrication structure comprises: A connecting portion, fixedly connected to the inner wall of the bridge housing (1); An oil guide portion connected to the connecting portion, wherein an oil passage is formed in the oil guide portion, and the oil passage extends from one end of the passive gear (4) to one end of the bearing (3); An oil collecting portion is connected to one end of the oil guiding portion, an oil storage cavity communicating with the oil passage is formed in the oil collecting portion, and the bottom of the bearing (3) is located in the oil storage cavity.

2. The oil-conducting lubrication structure according to claim 1, characterized in that: The height of the oil passage gradually decreases from one end of the driven gear (4) to one end of the bearing (3).

3. The oil-conducting lubrication structure according to claim 2, characterized in that: The oil guide portion comprises an oil guide groove (21), the oil guide groove (21) comprises an inclined section (211) and a transition section (212), and the transition section (212) is connected between the inclined section (211) and the oil collecting portion.

4. The oil-conducting lubrication structure according to claim 3, characterized in that: The shape of the transition section (212) is set to be an arc, and the angle between the inclined section (211) and the horizontal direction is 10°-15°.

5. The oil-conducting lubrication structure according to claim 1, characterized in that: The oil collecting portion comprises an oil collecting groove, and the shape of the oil collecting groove is set to be an arc.

6. The oil-conducting lubrication structure according to claim 5, characterized in that: A notch (221) is provided on one side of the oil collecting groove, and a mounting surface (222) for mounting the bearing (3) is provided at the notch.

7. The oil-conducting lubrication structure according to claim 1, characterized in that: The connecting portion comprises a connecting plate (23), the edge of the connecting plate (23) is provided with a flange (231), and the flange (231) is fixedly connected to the axle housing (1).

8. The oil-conducting lubrication structure according to claim 1, characterized in that: The connecting portion, the oil guiding portion and the oil collecting portion are integrally formed, and a tooling positioning hole (232) is provided on the connecting portion.

9. A through bridge, characterized in that: It comprises the oil guiding lubrication structure as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: It comprises the oil-conducting lubrication structure as described in any one of claims 1 to 8, or comprises the through bridge as described in claim 9.

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