A front axle tail bearing lubrication housing

Abstract

The utility model discloses a front axle tail bearing lubrication shell, including shell body, the tail axle cavity of being equipped with for installing tail bearing in shell body, be equipped with the oil storage groove on the shell body, and the oil storage groove is located the bottom of tail axle body, the oil storage groove is close to the tail bearing one end and is equipped with lubricating hole, and the oil storage groove is linked together with tail axle cavity through lubricating hole, the oil storage groove is used for collecting and storing the lubricating oil that splashes when the vehicle level runs, and when the vehicle is in big slope working condition, the oil storage groove supplies lubricating oil to the tail bearing through lubricating hole, through above -mentioned mode, the utility model can solve the problem of the lubrication deficiency of front axle tail bearing because of the overhigh upwarp when the off -the -road vehicle is in the extreme big slope, ensures the reliable lubrication of bearing under the inclination working condition.

Description

Technical Field

[0001] This utility model relates to the field of vehicle axle technology, and in particular to a lubrication housing for a front axle rear bearing. Background Technology

[0002] The front axle assembly is a critical component of the transmission system, and the lubrication of its internal bearings directly affects the reliability and service life of the entire vehicle. In existing technologies, the front axle rear bearing typically relies on lubricating oil being splashed onto the bearing location by the rotation of the gears for lubrication. For example, Chinese patent document CN209340468U discloses "a housing with oil passages for front and rear bearings." This structure, by setting up an oil reservoir, an oil inlet passage, and an oil return passage, forms a lubrication circuit, utilizing the gravity flow of lubricating oil to lubricate both the front and rear bearings. This structure optimizes the lubrication path to a certain extent, reduces the amount of lubricating oil used, and lowers the risk of leakage.

[0003] However, this existing structure still has certain limitations. Especially in extreme conditions such as off-road vehicles, when the vehicle is traveling on a steep, unpaved road, the front axle assembly will tilt at a large angle, causing the rear bearing to be positioned much higher than the lubricating oil level. At this time, relying on gear splashing or conventional oil flow for lubrication is difficult to effectively deliver lubricating oil to the rear bearing, causing the rear bearing to operate in a state of insufficient oil. This can easily lead to overheating, wear, or even burning of the bearing, seriously affecting the service life of the front axle assembly and driving safety. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a lubrication housing for a front axle rear bearing, which can solve the problem of insufficient lubrication caused by the front axle rear bearing being tilted too high when off-road vehicles are driving on extreme steep slopes, and ensure that the bearing receives reliable lubrication under tilted conditions.

[0005] To solve the above-mentioned technical problems, the present invention provides a front axle tail bearing lubrication housing, including a housing body, a tail shaft cavity for installing the tail bearing inside the housing body, and an oil reservoir on the housing body, the oil reservoir being located at the bottom of the tail shaft body. The oil reservoir has a lubrication channel at one end near the tail bearing, and the oil reservoir is connected to the tail shaft cavity through the lubrication channel. The oil reservoir is used to collect and store splashed lubricating oil when the vehicle is traveling at a level speed, and when the vehicle is on a steep slope, the oil reservoir supplies lubricating oil to the rear bearing through lubrication channels.

[0006] Preferably, the lubrication channel is located at the bottom of the oil reservoir near the tail bearing, and when the housing body is at the maximum design tilt angle, the lubrication channel is located at the lowest point of the oil reservoir cavity.

[0007] Preferably, the end of the oil reservoir furthest from the tail bearing has a threaded hole, and an oil plug is threaded into the threaded hole to seal one end of the oil reservoir.

[0008] Preferably, an oil collecting flare is provided in the tail shaft cavity of the housing body, and one end of the lubrication channel is connected to the oil collecting flare.

[0009] Preferably, the oil storage tank is a cylindrical cavity.

[0010] Preferably, the diameter of the lubrication channel is 1-5 mm.

[0011] The beneficial effects of this utility model are as follows: By establishing a local emergency oil source in the oil reservoir connected to the bottom of the rear bearing cavity and utilizing the principle of gravity flow, the problem of oil shortage and burnout of the rear bearing caused by the failure of conventional splash lubrication under extreme steep slope conditions is effectively solved; its lubrication channels are precisely opened at the bottom of the inner side of the oil reservoir, ensuring that it is located at the lowest point of the cavity at the maximum tilt angle, so that the lubricating oil can be completely discharged, significantly extending the emergency lubrication time; the overall structure is simple and reliable, the cylindrical cavity is easy to process and low in cost, and the removable oil plug facilitates maintenance, while the design of the oil collection flare further improves the accuracy and coverage efficiency of lubrication; at the same time, the optimized design of the lubrication channel diameter ensures a continuous oil supply while effectively preventing blockage, thereby comprehensively improving the reliability and service life of the front axle assembly under complex working conditions. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the shell body of this utility model; Figure 2 yes Figure 1 Enlarged diagram of section A in the middle; Figure 3 This is a cross-sectional view of the present invention; Figure 4 yes Figure 3 Enlarged schematic diagram of section B in the middle.

[0013] The components in the attached diagram are labeled as follows: 1. Housing body; 2. Tail bearing; 3. Oil reservoir; 4. Lubrication channel; 5. Oil plug; 6. Oil collection flare. Detailed Implementation

[0014] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0021] Example: refer to Figures 1-4 A lubrication housing for a front axle rear bearing includes a housing body 1. The housing body 1 contains a rear axle cavity for mounting the rear bearing 2. An oil reservoir 3 is provided on the housing body 1, located at the bottom of the rear axle cavity, to facilitate the collection and storage of splashed lubricating oil when the vehicle is traveling at a level speed. A lubrication channel 4 is provided at one end of the oil reservoir 3 near the rear bearing 2. One end of the lubrication channel 4 communicates with the oil reservoir 3, and the other end communicates with the rear axle cavity, thus connecting the oil reservoir 3 to the rear axle cavity through the lubrication channel 4. The oil reservoir 3 is used to collect and store splashed lubricating oil when the vehicle is traveling at a level speed, and to supply lubricating oil to the rear bearing 2 through the lubrication channel 4 when the vehicle is on a steep incline. By setting an oil reservoir 3 on the front axle housing 1 at the bottom of the rear bearing 2 cavity and connecting it to the rear axle cavity via lubrication channels 4, a simple and efficient emergency lubrication system is formed. The oil reservoir 3 actively collects and stores lubricating oil when the vehicle is traveling horizontally, forming a local oil source. When the vehicle is on a steep slope and conventional splash lubrication fails, the oil reservoir 3 can supply lubricating oil to the raised rear bearing 2 through the lubrication channels 4 under the action of gravity, fundamentally solving the problem of the rear bearing 2 burning out due to lack of oil under extreme conditions.

[0022] refer to Figures 1-4 The lubrication channel 4 is located at the bottom of the oil reservoir 3 near the tail bearing 2. When the housing body 1 is at its maximum design tilt angle, the lubrication channel 4 is located at the lowest point of the oil reservoir 3 cavity. This ensures that the lubricating oil in the oil reservoir 3 cavity can be completely and thoroughly discharged under its own gravity, down to the last drop. This not only maximizes the duration of emergency lubrication under extreme working conditions and avoids ineffective lubricating oil residue, but also ensures, from a structural principle perspective, that the lubrication system can be reliably activated and function within any design-permitted tilt angle, thus providing a fundamental guarantee for the continuous and reliable lubrication of the tail bearing 2.

[0023] refer to Figures 1-4 The oil reservoir 3 has a threaded hole at the end furthest from the tail bearing 2, and an oil plug 5 is threaded into the threaded hole to seal one end of the oil reservoir 3. A sealing ring or sealant can be added to the oil plug 5 as needed to further prevent oil leakage. The threaded connection provides a strong mechanical locking force and excellent sealing performance, effectively withstanding vibrations and oil pressure during vehicle operation and preventing lubricating oil leakage. Simultaneously, this detachable design greatly facilitates the regular cleaning and maintenance of the oil reservoir 3. If impurities accumulate due to long-term use, the oil plug 5 can be easily unscrewed for cleaning, ensuring the long-term unobstructed flow of the lubrication channel and the reliability and service life of the entire emergency lubrication system. Furthermore, it reduces processing difficulty and costs.

[0024] refer to Figures 1-4 An oil collecting flared port 6 is provided in the tail shaft cavity of the housing body 1, and one end of the lubrication channel 4 is connected to the oil collecting flared port 6. As a funnel-shaped or recessed structure integrated into the cavity wall, the oil collecting flared port 6 effectively increases the interface area for receiving lubricating oil flowing out of the lubrication channel 4, playing a key role in gathering and guiding the flow. It ensures that the lubricating oil is smoothly received and more widely guided to the area of ​​the tail bearing 2 that needs lubrication, significantly improving the coverage and efficiency of lubrication, while avoiding splashing or deviation caused by direct dripping of oil. Structurally, it further optimizes and ensures the accuracy and reliability of emergency lubrication.

[0025] refer to Figures 1-4 The oil reservoir 3 is a cylindrical cavity. The cylindrical cavity has a regular shape and smooth inner wall. Its primary advantage is that it is extremely convenient to process and manufacture. It can be machined in one go using a standard drill bit, which significantly reduces production costs and improves processing efficiency. Secondly, the smooth arc-shaped inner wall avoids sharp corners or dead corners, allowing the lubricating oil to flow smoothly. At the same time, it greatly reduces the deposition of impurities and sludge, making it easy to maintain and clean daily. From both structural and technological aspects, the reliability, economy and feasibility of this lubrication solution are ensured.

[0026] refer to Figures 2-4 The diameter of the lubrication channel 4 is 1-5 mm, preferably 3 mm. This precisely balances the requirements of "continuous oil supply" and "reliable flow". Specifically, this size range can produce an appropriate throttling effect, ensuring that the lubricating oil in the oil reservoir 3 flows out at a stable and slow rate, thereby avoiding depletion in a short time and providing sufficient and long-lasting lubrication for the tail bearing 2 under steep slope conditions. At the same time, this orifice diameter is sufficient to effectively prevent the risk of blockage caused by possible micro-impurities in the lubricating oil, ensuring the long-term unobstructed flow of the lubrication channel and the operational reliability of the entire emergency lubrication system.

[0027] Working principle: When driving on level or normal road conditions, the front axle main reducer gear rotates violently, splashing the lubricating oil at the bottom of the axle housing. Some of the oil will enter and accumulate in the oil reservoir 3 located at the bottom of the rear bearing 2 cavity. At this time, the oil reservoir 3 acts as a passive "oil tank", completing the reserve of emergency oil source.

[0028] When the vehicle enters a steep incline or on extremely unpaved roads, the entire front axle assembly tilts significantly, causing the rear bearing 2 to be positioned much higher than the oil level in the main oil sump, rendering traditional splash lubrication completely ineffective. At this point, the emergency lubrication system activates: the lubricating oil stored in the oil reservoir 3 begins to flow slowly and continuously through the lubrication channels 4 at the bottom under its own weight. The flowing lubricating oil is first effectively collected and gathered by the oil collecting flare 6, and then precisely guided to the raceway and rolling elements of the rear bearing 2, which are lacking lubrication due to the tilt, thus providing reliable targeted lubrication.

[0029] This process continues until the lubricating oil in the oil reservoir 3 is emptied. Because the lubrication channel 4 is located at the lowest point of the cavity at the maximum tilt angle, complete utilization of the lubricating oil is ensured. The 3mm diameter design of the lubrication channel 4 intelligently balances the oil supply speed and duration, preventing excessive loss while ensuring a sufficiently strong oil flow to resist blockage by impurities. Therefore, under all hazardous operating conditions, the tail bearing 2 receives continuous and reliable lubrication, fundamentally preventing serious failures such as overheating, wear, and even burnout caused by oil shortage.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lubrication housing for a front axle tail bearing, comprising a housing body (1), wherein the housing body (1) has a tail shaft cavity for mounting a tail bearing (2), characterized in that: The housing body (1) is provided with an oil storage tank (3), which is located at the bottom of the tail shaft body; The oil reservoir (3) has a lubrication channel (4) at one end near the tail bearing (2), and the oil reservoir (3) is connected to the tail shaft cavity through the lubrication channel (4); The oil reservoir (3) is used to collect and store splashed lubricating oil when the vehicle is traveling horizontally, and when the vehicle is in a steep slope condition, the oil reservoir (3) supplies lubricating oil to the tail bearing (2) through the lubrication channel (4).

2. The lubrication housing for a front axle rear bearing according to claim 1, characterized in that: The lubrication channel (4) is located at the bottom of the oil reservoir (3) near the tail bearing (2). When the housing body (1) is at the maximum design tilt angle, the lubrication channel (4) is located at the lowest point of the oil reservoir (3) cavity.

3. A front axle rear bearing lubrication housing according to claim 1 or 2, characterized in that: The oil storage tank (3) has a threaded hole at one end away from the tail bearing (2), and an oil plug (5) is threadedly connected to the threaded hole to seal one end of the oil storage tank (3).

4. The front axle rear bearing lubrication housing according to claim 3, characterized in that: An oil collecting flare (6) is provided in the tail shaft cavity of the housing body (1), and one end of the lubrication channel (4) is connected to the oil collecting flare (6).

5. A front axle rear bearing lubrication housing according to claim 3, characterized in that: The oil storage tank (3) is a cylindrical cavity.

6. A front axle rear bearing lubrication housing according to claim 1, characterized in that: The diameter of the lubrication channel (4) is 1-5 mm.

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