A dynamic liquid level management structure capable of improving the transmission efficiency of a drive axle

Abstract

The application relates to a dynamic liquid surface management structure capable of improving the transmission efficiency of a drive axle, which comprises a drive axle, a drive gear, an oil storage cavity, an axle cover, an axle housing and an oil baffle, wherein a two-stage oil storage structure is designed on the axle housing of the drive axle, the dynamic oil storage function of the oil storage cavity of the drive axle is realized, the dynamic adjustment of the gear oil liquid surface height of the axle cover under different vehicle speeds is achieved, the oil stirring power consumption of the drive axle under normal working conditions can be effectively reduced under the premise of ensuring the lubrication of key parts of the drive axle, the transmission efficiency of the drive axle is significantly improved, the transmission efficiency of the drive axle under normal working conditions can be effectively improved, the use cost of the vehicle is reduced, energy is saved, the carbon emission amount is reduced, the structure is simple, the effect is obvious, and the drive axle product is suitable for all commercial vehicles.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of commercial vehicle drive axle main reducer assembly, and particularly relates to a dynamic liquid level management structure capable of improving drive axle transmission efficiency. TECHNICAL BACKGROUND

[0002] Improving the transmission efficiency of commercial vehicles has been an unremitting goal of the automobile industry, which has economic benefits of reducing the cost of customers' vehicles and social benefits of saving energy and reducing carbon emissions. As an important part of the transmission system of commercial vehicles, the transmission efficiency of the drive axle directly affects the transmission efficiency of the whole commercial vehicle.

[0003] At present, the drive axle of the commercial vehicle mainly relies on gear stirring to drive the oil in the axle bag cavity, and the lubricating oil reaches the bearing and gear through the oil channel or direct splashing. During the starting and low-speed running stage of the vehicle, due to the low speed of the gear, the splashing effect is not obvious, and in order to effectively lubricate the bearings and gears and other key parts, the oil level in the axle bag needs to be filled to a high position. During the normal running and high-speed running stage of the vehicle, due to the high-speed rotation of the gear, the oil splashing is violent, the lubrication of the bearings and other key parts is sufficient, and too much oil has far exceeded the lubrication needs, at the same time, the stirring power consumption of the oil at high speed is large, the drive axle efficiency is reduced, and the axle bag produces a lot of heat.

[0004] At present, there is a lack of a dynamic liquid level management structure capable of improving the transmission efficiency of the drive axle to simultaneously meet the lubrication of the drive axle and improve the transmission efficiency. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art and provide a dynamic liquid level management structure capable of improving the transmission efficiency of the drive axle, which can simultaneously meet the lubrication of the drive axle and improve the transmission efficiency.

[0006] The present application is realized by adopting the following technical scheme:

[0007] A dynamic liquid level management structure capable of improving the transmission efficiency of the drive axle, comprising a drive axle, a drive gear, an oil storage cavity, an axle bag, an axle housing, and an oil baffle, wherein the axle bag and the axle housing are arranged on the drive axle, the oil baffle is arranged on the axle housing of the drive axle to form the oil storage cavity, the oil storage cavity is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are arranged on the oil baffle.

[0008] As a further description of the application, the oil storage cavity is divided into a high-speed oil storage area and a medium-high-speed oil storage area, forming a two-stage oil storage structure of the axle housing.

[0009] As further description of the application, the oil inlet and outlet amount of the two-stage oil storage structure of the axle housing is controlled by the area of the oil inlet and outlet; the high-speed oil storage area comprises a high-speed oil storage area oil inlet, a high-speed oil storage area oil outlet, and the medium-high-speed oil storage area comprises a medium-high-speed oil storage area oil inlet and a medium-high-speed oil storage area oil outlet; wherein the area of the high-speed oil storage area oil inlet is S1, the area of the high-speed oil storage area oil outlet is S2, the area of the medium-high-speed oil storage area oil inlet is S3, and the area of the medium-high-speed oil storage area oil outlet is S4, and the four parameters should satisfy S1>S2, S3>S4, and S2>S4.

[0010] As further description of the application, the oil baffle is divided into an upper oil baffle and a lower oil baffle, and can be welded, riveted or cast on the axle housing body.

[0011] As further description of the application, the high-speed oil storage area oil inlet and the high-speed oil storage area oil outlet are arranged on the upper oil baffle, and the medium-high-speed oil storage area oil inlet and the medium-high-speed oil storage area oil outlet are arranged on the lower oil baffle.

[0012] Compared with the prior art, the application has the following beneficial technical effects:

[0013] The application realizes the dynamic oil storage function of the drive axle oil storage cavity by designing a two-stage oil storage structure on the drive axle housing, achieves the purpose of dynamic adjustment of the oil level height of the drive axle gear oil at different speeds, effectively reduces the oil stirring power consumption of the drive axle under normal working conditions on the premise of ensuring the lubrication of the key parts of the drive axle, and significantly improves the transmission efficiency of the drive axle.

[0014] The application can effectively improve the transmission efficiency of the drive axle under normal working conditions, reduce the cost of using the vehicle, save energy, reduce carbon emissions, has a simple structure, obvious effect, and is suitable for drive axle products of all commercial vehicles. BRIEF DESCRIPTION OF DRAWINGS

[0015] The application will be further described below with reference to the drawings:

[0016] Fig. 1 It is a dynamic liquid level management structure diagram of the application.

[0017] Fig. 2 It is a dynamic liquid level management high-speed oil storage cavity structure diagram of the application.

[0018] Fig. 3 It is a dynamic liquid level management medium-high-speed oil storage cavity diagram of the application.

[0019] EXPLANATION OF REFERENCE NUMERALS

[0020] 1, high-speed oil storage cavity; 2, medium and high-speed oil storage cavity, 3, upper oil baffle; 4, lower oil baffle; 5, high-speed oil storage cavity oil inlet; 6, axle housing; 7, axle cover; 8, high-speed oil storage cavity oil outlet; 9, medium and high-speed oil storage cavity oil outlet. DETAILED DESCRIPTION

[0021] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the present application will be described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. In the description of the present application, it should be noted that unless otherwise specifically defined and limited, the terms "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0022] REFERENCE Figs. 1 to 3 A dynamic liquid level management structure for improving the transmission efficiency of the drive axle, comprising a drive axle, a drive gear, an oil storage cavity, an axle cover 6, an axle housing 7, and an oil baffle; the axle cover 6 and the axle housing 7 are arranged on the drive axle, the oil baffle is arranged on the axle housing of the drive axle to form an oil storage cavity, the oil storage cavity is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are arranged on the oil baffle;

[0023] The oil storage cavity is welded at different positions of the axle housing, the oil storage cavity is divided into a high-speed oil storage area 1 and a medium and high-speed oil storage area 2, and a two-stage oil storage structure of the axle housing is formed; the oil storage cavity stores the oil splashed by the drive gear, effectively reduces the liquid level position of the axle cover 6 of the drive axle, reduces the oil stirring loss, and improves the transmission efficiency of the drive axle; the structure realizes the dynamic adjustment function of the liquid level by controlling the oil inlet and outlet amounts at different speeds;

[0024] The oil inlet and outlet amounts of the two-stage oil storage structure of the axle housing are controlled by the areas of the oil inlet and the oil outlet; the high-speed oil storage area 1 includes a high-speed oil storage area oil inlet 5 and a high-speed oil storage area oil outlet 8, and the medium and high-speed oil storage area 2 includes a medium and high-speed oil storage area oil inlet and a medium and high-speed oil storage area oil outlet 9;

[0025] The liquid level dynamic management is realized by controlling the oil inlet and outlet of the secondary oil storage structure of the axle housing; when the vehicle is running, the oil splashed to the axle housing by the drive gear enters the high-speed oil storage area 1 through the high-speed oil storage area inlet 5; the bottom of the high-speed oil storage area 1 is designed with a high-speed oil storage area outlet 8, and the oil flows out of the high-speed oil storage area 1 from the high-speed oil storage area outlet 8 and enters the middle-high-speed oil storage area 2 at the lower part of the axle housing; the middle-high-speed oil storage area 2 is an open non-closed cavity, and the bottom of the middle-high-speed oil storage area 2 is also designed with a middle-high-speed oil storage area outlet 9, and the oil flows back to the axle housing 6 through the middle-high-speed oil storage area outlet 9;

[0026] The oil inlet amount of the oil storage cavity inlet is affected by the drive axle speed and the size of the inlet; when the size of the inlet is determined, the higher the drive axle speed, the faster the oil inlet speed; the oil outlet amount of the outlet is mainly affected by the size of the outlet area, and the larger the area, the faster the oil outlet amount. The areas of the oil inlets and outlets of the oil storage areas in the present application need to be specially designed and calibrated, wherein the high-speed oil storage area inlet area S1, the high-speed oil storage area outlet area S2; the middle-high-speed oil storage area inlet area S3, the middle-high-speed oil storage area outlet area S4, the four parameters should satisfy S1>S2, S3>S4, S2>S4;

[0027] For the secondary oil storage structure of the axle housing, when the oil inlet speed is not greater than the oil outlet speed, the oil storage cavity cannot store oil, at this time the liquid level height in the axle housing will not change; when the oil inlet speed is greater than the oil outlet speed, the oil storage cavity stores oil, at this time part of the oil in the axle housing is stored by the axle housing oil storage cavity, and the liquid level height in the axle housing is reduced;

[0028] The oil baffle is divided into an upper oil baffle 3 and a lower oil baffle 4, and can be welded, riveted or cast on the axle housing 6 base respectively;

[0029] The high-speed oil storage area inlet 5 and the high-speed oil storage area outlet 8 are arranged on the upper oil baffle 3, and the middle-high-speed oil storage area inlet and the middle-high-speed oil storage area outlet 9 are arranged on the lower oil baffle; the structures of the high-speed oil storage area inlet 5, the high-speed oil storage area outlet, the high-speed oil storage area inlet, the middle-high-speed oil storage area outlet 9 can be designed to be not limited to circular holes, square holes and other shapes, and the number is not limited.

[0030] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and range of equivalent elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0031] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalent replacements; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A dynamic fluid level management structure for improving the driveline efficiency of a drive axle, characterized by, Including drive axle, drive gear, oil storage cavity, axle cover, axle housing, oil baffle; The axle cover and the axle housing are arranged on the drive axle, the oil baffle is arranged on the axle housing of the drive axle to form an oil storage cavity, the oil storage cavity is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are arranged on the oil baffle; The oil storage cavity is divided into a high-speed oil storage area (1) and a medium-high-speed oil storage area (2), and a two-stage oil storage structure of the axle housing is formed; The oil inlet and oil outlet of the two-stage oil storage structure of the axle housing are controlled by the area of the oil inlet and the oil outlet; The high-speed oil storage area (1) comprises a high-speed oil storage area oil inlet (5) and a high-speed oil storage area oil outlet (8); The medium-high-speed oil storage area (2) comprises a medium-high-speed oil storage area oil inlet and a medium-high-speed oil storage area oil outlet (9); Oil flows out of the high-speed oil storage area (1) from the high-speed oil storage area oil outlet (8) into the medium-high-speed oil storage area (2) at the lower part of the axle housing, the medium-high-speed oil storage area (2) is an open non-closed cavity, and oil flows back to the axle cover (7) through the medium-high-speed oil storage area oil outlet (9); Wherein the area S1 of the high-speed oil storage area oil inlet, the area S2 of the high-speed oil storage area oil outlet, the area S3 of the medium-high-speed oil storage area oil inlet, and the area S4 of the medium-high-speed oil storage area oil outlet should satisfy S1>S2, S3>S4, and S2>S4; The oil baffle is divided into an upper oil baffle (3) and a lower oil baffle (4); The high-speed oil storage area oil inlet (5) and the high-speed oil storage area oil outlet (8) are arranged on the upper oil baffle (3), and the medium-high-speed oil storage area oil inlet and the medium-high-speed oil storage area oil outlet (9) are arranged on the lower oil baffle (4).

2. The dynamic fluid level management structure for improving the transmission efficiency of a drive axle of claim 1, wherein, The upper oil baffle (3) and the lower oil baffle (4) are respectively welded, riveted or cast on the base body of the axle housing (6).

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