System for improving lubricating effect of electric drive axle assembly

Abstract

The invention discloses a system for improving the lubricating effect of an electric drive axle assembly, and relates to the technical field of power systems, the system comprises a front shell and a rear shell, the front shell is provided with a differential mechanism front bearing position, an input shaft front bearing position and an intermediate shaft front bearing position, and each bearing position is correspondingly provided with an oil guide rib and an oil hole; a differential mechanism rear bearing position, an input shaft rear bearing position and an intermediate shaft rear bearing position are arranged on the rear shell; and each bearing position is correspondingly provided with an oil guide rib and an oil hole. By means of the arrangement, the system can improve the lubricating performance of the gears and the bearings in the electric drive axle and prolong the service life of the gears and the bearings.

Description

Technical Field

[0001] The invention relates to the technical field of power systems, and in particular to a system for improving the lubrication effect of an electric drive axle assembly. Background Art

[0002] The operation of electric vehicles involves various road conditions such as uphill and downhill, left and right tilt, etc., which makes the gears, bearings and other moving parts inside the electric drive axle assembly (see Figure 1 ) There may be insufficient lubrication, leading to early failure, which greatly affects the service life of the electric drive axle. How to ensure the effective lubrication of various gears, bearings and other moving parts is particularly important. The usual solution is to use splash lubrication, which stirs the oil through the internal gears and splashes it to various locations for lubrication. Due to the complex internal structure of the entire box, there are easily insufficient lubrication locations.

[0003] To this end, the present invention proposes a system for improving the lubrication performance of various gears and bearings inside an electric drive axle and increasing the service life of the gears and bearings. Summary of the invention

[0004] The purpose of the present invention is to solve the defects in the prior art and to propose a system for improving the lubrication effect of an electric drive axle assembly.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A system for improving the lubrication effect of an electric drive axle assembly comprises a front housing and a rear housing, wherein the front housing is provided with a differential front bearing, an input shaft front bearing and an intermediate shaft front bearing. The front bearing of the differential is surrounded by a first oil guide rib and a second oil guide rib, and a first oil hole is provided on one side of the second oil guide rib; A third oil guide rib is provided on one side of the front bearing position of the intermediate shaft, and a second oil hole is provided on one side of the third oil guide rib; A fourth oil guide rib is provided on one side of the front bearing of the input shaft, and a third oil hole is provided on one side of the fourth oil guide rib; The rear housing is provided with a differential rear bearing, an input shaft rear bearing and an intermediate shaft rear bearing; A fifth oil guide rib and a sixth oil guide rib are arranged around the rear bearing position of the differential, and a fourth oil hole is arranged on a side of the sixth oil guide rib away from the fifth oil guide rib; A seventh oil guide rib and an eighth oil guide rib are arranged on one side of the intermediate shaft rear bearing position, a guide channel is formed between the seventh oil guide rib and the eighth oil guide rib, and a fifth oil hole is arranged on one side of the eighth oil guide rib adjacent to the seventh oil guide rib; A ninth oil guide rib is arranged on one side of the rear bearing position of the input shaft, and an oil groove is arranged at the end of the ninth oil guide rib.

[0006] Furthermore, the second oil guide rib is arranged along the oil flow direction, and the first oil hole is arranged at an end of the second oil guide rib away from the first oil guide rib and is located on the upper side of the second oil guide rib.

[0007] Furthermore, a second oil hole is provided on the upper side of the third oil guide rib, and an oil collecting box is provided above the second oil hole.

[0008] Furthermore, the third oil hole is located on the upper side of the fourth oil guiding rib.

[0009] Furthermore, the sixth oil guide rib is arranged along the oil flow direction, and the fourth oil hole is located on the upper side of the sixth oil guide rib.

[0010] Furthermore, the fifth oil hole is arranged on the upper side of the eighth oil guide rib and is located at the starting end of the guide channel.

[0011] Furthermore, the ninth oil guide rib extends to the edge of the rear bearing position of the output shaft, and the oil groove is arranged at the extended end of the ninth oil guide rib. Beneficial Effects Compared with the prior art, the beneficial effect of the present invention is that: through the configuration of the present invention, a system is provided to improve the lubrication performance of the gears and bearings inside the electric drive axle and increase the service life of the gears and bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0013] Figure 1 It is a schematic diagram of the structure of the internal gears, bearings and other moving parts of the electric drive axle assembly.

[0014] Figure 2 This is a schematic diagram of the structure of the oil guide ribs and oil holes in the front housing.

[0015] Figure 3 This is a schematic diagram of the structure of the oil guide ribs and oil holes in the rear housing.

[0016] Figure 4 Schematic diagram of the structure of the installation of the differential gear.

[0017] Figure 5 This is a schematic diagram of the oil guiding effect of the oil guiding ribs arranged around the rear bearing of the rear housing differential.

[0018] Figure 6 Schematic diagram of the oil guide rib and oil hole design of the front housing.

[0019] Figure 7 Schematic diagram of the oil guide rib and oil hole design of the rear housing.

[0020] Figure 8 It is a schematic diagram of the oil guiding ribs and oil holes of the front housing.

[0021] Fig. 9 It is a schematic diagram of the oil guiding ribs and oil holes of the rear housing.

[0022] Fig.10 Schematic diagram of the oil guiding effect of the oil collecting box structure.

[0023] In the figure: 11, first oil guide rib; 12, second oil guide rib; 13, third oil guide rib; 14, fourth oil guide rib; 15, fifth oil guide rib; 16, sixth oil guide rib; 17, seventh oil guide rib; 18, eighth oil guide rib; 19, ninth oil guide rib; 21, first oil hole; 22, second oil hole; 23, third oil hole; 24, fourth oil hole; 25, fifth oil hole; 31, oil tank; 32, oil collecting box. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position 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 a limitation on the present invention.

[0026] Embodiment 1: A system for improving the lubrication effect of an electric drive axle assembly comprises a front housing and a rear housing, wherein a front bearing position of a differential, a front bearing position of an input shaft and a front bearing position of an intermediate shaft are arranged on the front housing. A first oil guide rib and a second oil guide rib are arranged around the front bearing of the differential, and a first oil hole is arranged on one side of the second oil guide rib; A third oil guide rib is arranged on one side of the front bearing position of the intermediate shaft, and a second oil hole is arranged on one side of the third oil guide rib; A fourth oil guide rib is arranged on one side of the front bearing position of the input shaft, and a third oil hole is arranged on one side of the fourth oil guide rib; The rear housing is provided with a differential rear bearing, an input shaft rear bearing and an intermediate shaft rear bearing; A fifth oil guide rib and a sixth oil guide rib are arranged around the rear bearing position of the differential, and a fourth oil hole is arranged on a side of the sixth oil guide rib away from the fifth oil guide rib; A seventh oil guide rib and an eighth oil guide rib are arranged on one side of the intermediate shaft rear bearing position, a guide channel is formed between the seventh oil guide rib and the eighth oil guide rib, and a fifth oil hole is arranged on one side of the eighth oil guide rib adjacent to the seventh oil guide rib; A ninth oil guide rib is arranged on one side of the rear bearing position of the input shaft, and an oil groove is arranged at the end of the ninth oil guide rib.

[0027] In other preferred embodiments, the second oil guide rib is arranged along the oil flow direction, and the first oil hole is arranged at an end of the second oil guide rib away from the first oil guide rib and is located on the upper side of the second oil guide rib.

[0028] In other preferred embodiments, a second oil hole is provided on the upper side of the third oil guide rib, and an oil collecting box is provided above the second oil hole.

[0029] In other preferred embodiments, the third oil hole is located on the upper side of the fourth oil guiding rib.

[0030] In other preferred embodiments, the sixth oil guide rib is arranged along the oil flow direction, and the fourth oil hole is located on the upper side of the sixth oil guide rib.

[0031] In other preferred embodiments, the fifth oil hole is arranged on the upper side of the eighth oil guide rib and is located at the starting end of the guide channel.

[0032] In other preferred embodiments, the ninth oil guide rib extends to the edge of the rear bearing seat of the output shaft, and the oil groove is provided at the extended end of the ninth oil guide rib.

[0033] Embodiment 2: (1) The front housing is provided with a first oil guide rib 11 along the oil throwing path of the differential gear, and a first oil guide rib 12 and a first oil hole 21 are provided along the oil flow direction to guide the oil to the front bearing of the differential; a third oil guide rib 13 and a second oil hole 22 are provided to guide the oil to the front bearing of the intermediate shaft; a fourth oil guide rib 14 and a third oil hole 23 are provided below the front shaft of the intermediate shaft to guide the oil to the front bearing of the input shaft; and an oil collecting box 32 is provided at a high position to collect the oil at a high position (see Figure 2 ).

[0034] (2) The rear housing is provided with a fifth oil guide rib 15 along the differential gear oil throwing path, a sixth oil guide rib 16 and a fourth oil hole 24 are provided along the oil flow direction to guide the oil to the differential rear bearing position; a seventh oil guide rib 17 and an eighth oil guide rib 18, as well as a fifth oil hole 25, are provided to guide the oil to the intermediate shaft rear bearing position; a ninth oil guide rib 19 and an oil groove 31 are provided below the intermediate shaft front axle to guide the oil to the input shaft rear bearing position (see Figure 3 ).

[0035] (3) The oil flows along the direction of rotation of the gears. The first oil guide rib 11 surrounding the differential gear blocks the oil from being stirred by the differential case and converges the oil. The first oil guide rib 11 and the fifth oil guide rib 15 guide the oil to a higher place (see Figure 4 and Figure 5 ).

[0036] (4) The oil at the high position is guided along the first oil guide rib 12 to the first oil hole 21 and enters the front bearing position of the differential; along the third oil guide rib 13 to the second oil hole 22 and enters the front bearing position of the intermediate shaft; along the fourth oil guide rib 14 to the third oil hole 23 and enters the front bearing position of the input shaft; along the sixth oil guide rib 16 to the fourth oil hole 24 and enters the rear bearing position of the differential; along the seventh oil guide rib 17 and the eighth oil guide rib 18 to the fifth oil hole 25 and enters the rear bearing position of the intermediate shaft; along the ninth oil guide rib 19 to the oil groove 1 and enters the rear bearing position of the input shaft (see Figure 6 , Figure 7 , Figure 8 , Fig. 9 ).

[0037] (5) At the same time, the oil collecting box collects the oil thrown to a high place by the gear, and then guides it through the holes to the intermediate shaft disc teeth and the intermediate shaft rear bearing in the complex position for relubrication (see Fig.10 ).

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A system for improving the lubrication effect of an electric drive axle assembly, characterized in that: It includes a front housing and a rear housing, wherein the front housing is provided with a differential front bearing, an input shaft front bearing and an intermediate shaft front bearing. The front bearing of the differential is surrounded by a first oil guide rib and a second oil guide rib, and a first oil hole is provided on one side of the second oil guide rib; A third oil guide rib is provided on one side of the front bearing position of the intermediate shaft, and a second oil hole is provided on one side of the third oil guide rib; A fourth oil guide rib is provided on one side of the front bearing of the input shaft, and a third oil hole is provided on one side of the fourth oil guide rib; The rear housing is provided with a differential rear bearing, an input shaft rear bearing and an intermediate shaft rear bearing; A fifth oil guide rib and a sixth oil guide rib are arranged around the rear bearing position of the differential, and a fourth oil hole is arranged on a side of the sixth oil guide rib away from the fifth oil guide rib; A seventh oil guide rib and an eighth oil guide rib are arranged on one side of the intermediate shaft rear bearing position, a guide channel is formed between the seventh oil guide rib and the eighth oil guide rib, and a fifth oil hole is arranged on one side of the eighth oil guide rib adjacent to the seventh oil guide rib; A ninth oil guide rib is arranged on one side of the rear bearing position of the input shaft, and an oil groove is arranged at the end of the ninth oil guide rib.

2. A system for improving the lubrication effect of an electric drive axle assembly according to claim 1, characterized in that: The second oil guide rib is arranged along the oil flow direction, and the first oil hole is arranged at an end of the second oil guide rib away from the first oil guide rib and is located on the upper side of the second oil guide rib.

3. The system for improving the lubrication effect of an electric drive axle assembly according to claim 1, characterized in that: A second oil hole is arranged on the upper side of the third oil guide rib, and an oil collecting box is arranged above the second oil hole.

4. The system for improving the lubrication effect of an electric drive axle assembly according to claim 1, characterized in that: The third oil hole is located on the upper side of the fourth oil guide rib.

5. The system for improving the lubrication effect of an electric drive axle assembly according to claim 1, characterized in that: The sixth oil guide rib is arranged along the oil flow direction, and the fourth oil hole is located on the upper side of the sixth oil guide rib.

6. The system for improving the lubrication effect of an electric drive axle assembly according to claim 1, characterized in that: The fifth oil hole is arranged on the upper side of the eighth oil guide rib and is located at the starting end of the guide channel.

7. The system for improving the lubrication effect of an electric drive axle assembly according to claim 1, characterized in that: The ninth oil guide rib extends to the edge of the rear bearing position of the output shaft, and the oil groove is arranged at the extended end of the ninth oil guide rib.

Images