Bearing seat structure for electric drive axle reduction gearbox

Abstract

The utility model relates to the technical field of transmission of an electric automobile driving system, in particular to a bearing seat structure for an electric drive axle reduction gearbox, which comprises a bearing seat body, a bearing mounting seat hole is arranged at the center of the bearing seat body, and a position fixed mounting bolt hole structure is arranged on the bearing seat body. Wherein a lubricating oil channel structure and a lubricating oil hole are further arranged in the bearing seat body, and a lubricating oil nozzle is arranged on the bearing seat body; the lubricating oil hole communicates with the lubricating oil channel structure; by arranging the bearing seat body structure comprising the lubricating oil channel structure, the lubricating oil hole and the lubricating oil nozzle, forced lubrication is achieved in a reduction gearbox body to make up the area which is not covered by splash lubrication of a gear of the reduction gearbox, and the optimization purposes of being good in strength, light in weight and capable of improving oil way lubrication are achieved. And the service life of the reduction gearbox and the economical efficiency of the whole vehicle are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission of electric vehicle drive systems, in particular to a bearing seat structure for an electric drive axle reduction box. Background Art

[0002] With the implementation of the national dual-carbon policy, new energy vehicles have developed rapidly, the market has entered a development period, and sales are increasing. As the power source of new energy vehicles, the size and structure of the electric drive axle assembly directly affect the overall layout of the electric vehicle. In order to compress the external dimensions of the electric drive axle, a coaxial electric drive axle came into being. The coaxial electric drive axle has an input shaft and an output differential shaft on the same straight line. This structure requires a bearing support in the middle to meet the fixing requirements of the gear shaft. Therefore, arranging a bearing seat is the best choice. The support rigidity of the bearing seat here will directly affect the service life of the parts of the axle transmission system; the lubricity of the bearing seat also has a great influence on the service life of the bearing in the bearing seat; the dead weight of the bearing seat has a certain influence on the economic indicators such as fuel consumption of the whole vehicle; a bearing seat with good strength, light weight and improved oil circuit lubrication has become the best goal.

[0003] A Chinese patent with publication number CN110943581A discloses an integrated electric drive structure of a motor controller, a DCDC, a reduction gearbox and a motor, wherein the reduction gearbox and the motor are integrated to save space, and the bearing seat structure used therein is a conventional structure with poor lubrication performance. Utility Model Content

[0004] In view of the above problems, the utility model provides a bearing seat structure for an electric drive axle reduction box.

[0005] The technical solution adopted is a bearing seat structure for an electric drive axle reduction box, comprising a bearing seat body, a bearing mounting seat hole is arranged at the center of the bearing seat body, a position fixing mounting bolt hole structure is arranged on the bearing seat body, a lubricating oil channel structure and a lubricating oil hole are also arranged in the bearing seat body, and a lubricating oil nozzle is arranged on the bearing seat body;

[0006] The lubricating oil hole is in communication with the lubricating oil channel structure;

[0007] One end of the lubricating oil nozzle is inserted into the lubricating oil hole.

[0008] Optionally, the center line of the lubricating oil nozzle coincides with the center line of the lubricating oil hole

[0009] Optionally, lubricating oil holes are provided on the front and back sides of the bearing seat body, and lubricating oil nozzles are also provided on the front and back sides of the bearing seat body respectively.

[0010] Optionally, the lubricating oil channel structure includes a first lubricating oil channel and a second lubricating oil channel;

[0011] The second lubricating oil passage is communicated with the lubricating oil hole and the first lubricating oil passage respectively;

[0012] The first lubricating oil passage and the lubricating oil hole are oriented in the same direction.

[0013] Optionally, the outer circular end of the lubricating oil nozzle is provided with a threaded structure, the lubricating oil hole is provided with a matching internal threaded structure, and the lubricating oil nozzle is detachably connected to the lubricating oil hole.

[0014] Optionally, the bearing seat body has a fan-shaped structure.

[0015] Optionally, the bearing seat body is provided with evenly distributed reinforcing ribs outwardly along the bearing mounting seat hole.

[0016] The beneficial effects of the present utility model include at least one of the following:

[0017] 1. By setting up a bearing seat body structure including a lubricating oil channel structure, lubricating oil holes and lubricating oil nozzles, forced lubrication is realized in the reduction gearbox body to make up for the area not covered by the splash lubrication of the reduction gearbox gears, achieving the optimization goals of good strength, light weight and improved oil circuit lubrication, and having a positive trend of improving the reduction gearbox life and the economy of the whole vehicle.

[0018] 2. The bearing seat is designed with uniform wall thickness and reinforcing rib structure to ensure that it meets the required strength while achieving a lighter dead weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a bearing seat for an electric drive axle reduction box;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of a bearing seat structure for an electric drive axle reduction box;

[0021] Figure 3 A schematic diagram of the structure of a bearing seat for an electric drive axle reduction box from another perspective;

[0022] Figure 4 This is a schematic diagram of the installation of the bearing seat structure in the reduction box;

[0023] The accompanying drawings are as follows: 1 is the bearing seat body, 2 is the lubricating oil nozzle, 3 is the first lubricating oil channel, 5 is the second lubricating oil channel, 6 is the bearing mounting seat hole, 7 is the reinforcing rib, and 8 is the lubricating oil hole. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0026] like Figures 1 to 3 As shown, a bearing seat structure for an electric drive axle reduction box includes a bearing seat body 1, a bearing mounting seat hole 6 is provided at the center of the bearing seat body 1, and a position fixing mounting bolt hole structure is provided on the bearing seat body 1. It is characterized in that a lubricating oil channel structure and a lubricating oil hole 8 are also provided in the bearing seat body 1, and a lubricating oil nozzle 2 is provided on the bearing seat body 1;

[0027] The lubricating oil hole 8 is connected to the lubricating oil channel structure;

[0028] One end of the lubricating oil nozzle 2 is inserted into the lubricating oil hole 8 .

[0029] The purpose of this design is to achieve forced lubrication in the reduction gear box body by setting up a bearing seat body structure including a lubricating oil channel structure, lubricating oil holes and lubricating oil nozzles, so as to make up for the area not covered by the splash lubrication of the reduction gear gears, thereby achieving the optimization goals of good strength, light weight and improved oil circuit lubrication, and having a positive trend of improving the life of the reduction gear box and the economy of the whole vehicle.

[0030] In this embodiment, the center line of the lubricating oil nozzle 2 coincides with the center line of the lubricating oil hole 8, the lubricating oil hole 8 is provided on the front and back sides of the bearing seat body 1, and the lubricating oil nozzles 2 are also provided on the front and back sides of the bearing seat body 1, respectively, and the lubricating oil channel structure includes a first lubricating oil channel 3 and a second lubricating oil channel 5;

[0031] The second lubricating oil passage 5 is communicated with the lubricating oil hole 8 and the first lubricating oil passage 3 respectively;

[0032] The first lubricating oil passage 3 and the lubricating oil hole 8 are oriented in the same direction.

[0033] At the same time, the outer circular end of the lubricating oil nozzle 2 is provided with a thread structure, the lubricating oil hole 8 is provided with a matching internal thread structure, and the lubricating oil nozzle 2 and the lubricating oil hole 8 are detachably connected.

[0034] The purpose of such design is that a bearing mounting hole is arranged in the middle of the bearing mounting seat, and then the lubricating oil circulation channel is arranged inside the bearing mounting seat, and at the same time, a lubricating oil hole connected to the lubricating oil circulation channel is arranged on the surface of the bearing mounting seat, and then the lubricating oil nozzle can be connected to the lubricating oil hole through a threaded structure so that it is connected to the lubricating oil circulation channel.

[0035] At the same time, the bearing seat body 1 provided in this embodiment has a fan-shaped structure.

[0036] The purpose of this design is to save material and reduce weight while increasing the cavity space by adjusting the disc-shaped bearing seat body to a fan-shaped structure while ensuring sufficient strength.

[0037] In this embodiment, the bearing seat body 1 is provided with reinforcing ribs 7 evenly arranged outwardly along the bearing mounting seat hole 6 .

[0038] It should be pointed out that in actual use, the specific connection method can be that reinforcing ribs are evenly distributed on both sides of the web between the outer cylinder of the bearing outer ring mounting hole and the outer circumferential bolt mounting hole at the center position of the bearing seat body, so as to achieve overall uniform wall thickness and strengthen the structure through local reinforcing ribs and achieve a lighter dead weight.

[0039] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing seat structure for an electric drive axle reduction box, comprising a bearing seat body (1), a bearing mounting seat hole (6) being arranged at the center of the bearing seat body (1), and a position fixing mounting bolt hole structure being arranged on the bearing seat body (1), characterized in that: A lubricating oil channel structure and a lubricating oil hole (8) are also provided in the bearing seat body (1), and a lubricating oil nozzle (2) is provided on the bearing seat body (1); The lubricating oil hole (8) is in communication with the lubricating oil channel structure; One end of the lubricating oil nozzle (2) is inserted into the lubricating oil hole (8).

2. The bearing seat structure for an electric drive axle reduction box according to claim 1, characterized in that: The center line of the lubricating oil nozzle (2) coincides with the center line of the lubricating oil hole (8).

3. The bearing seat structure for an electric drive axle reduction box according to claim 1, characterized in that: The lubricating oil holes (8) are provided on the front and back sides of the bearing seat body (1), and lubricating oil nozzles (2) are also provided on the front and back sides of the bearing seat body (1) respectively.

4. The bearing seat structure for an electric drive axle reduction box according to claim 1, characterized in that: The lubricating oil channel structure comprises a first lubricating oil channel (3) and a second lubricating oil channel (5); The second lubricating oil passage (5) is respectively connected to the lubricating oil hole (8) and the first lubricating oil passage (3); The first lubricating oil channel (3) and the lubricating oil hole (8) are oriented in the same direction.

5. The bearing seat structure for an electric drive axle reduction box according to claim 4, characterized in that: The outer circular end of the lubricating oil nozzle (2) is provided with a thread structure, the lubricating oil hole (8) is provided with a matching internal thread structure, and the lubricating oil nozzle (2) and the lubricating oil hole (8) are detachably connected.

6. A bearing seat structure for an electric drive axle reduction box according to any one of claims 1 to 5, characterized in that: The bearing seat body (1) is in a fan-shaped structure.

7. A bearing seat structure for an electric drive axle reduction box according to any one of claims 1 to 5, characterized in that: The bearing seat body (1) is provided with reinforcing ribs (7) arranged evenly outwardly along the bearing mounting seat hole (6).

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