Lubricating oil cleaning and filtering assembly, gearbox and rear axle

Abstract

The utility model discloses a lubricating oil cleaning and filtering assembly, a gearbox and a rear axle, relates to the field of gearboxes and rear axles, and aims to solve the problems that in the working process of the gearbox, as the cleanliness of lubricating oil is not enough, a bearing is seriously abraded too early, and the service life of the whole gearbox is affected. Comprising a special-shaped shell, a front filtering cavity and a rear oil collecting cavity are formed in the special-shaped shell, the front filtering cavity is provided with an oil inlet communicated with an output oil channel, the rear oil collecting cavity is provided with an oil return opening communicated with an input oil channel, and the oil return opening is communicated with the input oil channel. The lubricating oil filter has the advantages that lubricating oil is continuously filtered and cleaned through the filter, so that the cleanliness of the lubricating oil is kept, bearing abrasion is reduced, and the overall service life of a bearing and a gearbox is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox technical field especially is related to a kind of lubricating oil cleaning filtration assembly, gearbox and rear axle. BACKGROUND

[0002] In the design of traditional electric vehicle gearbox, especially for electric commercial truck gearbox, in order to cope with the growing power demand, the rotating speed of gear set is constantly improved, and the rotating speed of gear set of part high-performance vehicle has broken through the threshold of ten thousand revolutions. Although this technical innovation has significantly improved the transmission efficiency and power output of gearbox, it has brought new challenges-the unprecedented high requirements for the cleanliness of lubricating oil.

[0003] When the gearbox is shipped, the cleanliness of lubricating oil can usually meet the established standard, ensuring smooth and safe initial operation. However, as the vehicle is put into use, the gear set continues to run at high speed, and inevitably generates wear powder. These tiny metal particles are mixed into the lubricating oil as it circulates, causing secondary pollution to the lubricating oil. The decrease in the cleanliness of lubricating oil directly affects its lubricating performance and cooling effect, leading to increased friction and temperature rise of key components such as gear set and bearing, thereby accelerating the wear and aging of components.

[0004] Especially serious is that when the cleanliness of lubricating oil does not meet the standard, precision components such as bearings are prone to failure due to insufficient cleanliness or insufficient lubrication or decreased lubrication quality, which not only causes abnormal noise and vibration of the gearbox, but also may lead to a decrease in the overall performance of the gearbox, even causing a fault shutdown, seriously affecting the normal operation and transportation efficiency of electric commercial trucks. In addition, frequent maintenance and replacement of gearbox components also increase operating costs and reduce the economy of the vehicle. SUMMARY

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a kind of lubricating oil cleaning filtration assembly and gearbox and rear axle, by the design effectively solved in the working process of gearbox, due to the cleanliness of lubricating oil is not enough, just premature to bearing will cause greater wear bearing, affect the overall gearbox service life problem.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: the utility model discloses a filter connected outside the component, the filter includes a special-shaped shell, a front filter cavity and a rear oil collecting cavity are arranged in the special-shaped shell, the front filter cavity is provided with an oil inlet communicated with the output oil channel, the rear oil collecting cavity is provided with an oil return port communicated with the input oil channel, a filter diaphragm is arranged between the front filter cavity and the rear oil collecting cavity, and the filter diaphragm is fixedly connected with the special-shaped shell.

[0007] Preferably, the special-shaped shell is internally provided with a rubber pad, and the filter diaphragm is a flexible bag-shaped structure, and the bag opening of the filter diaphragm is connected with the oil inlet through a sealing clamp.

[0008] Preferably, the filter diaphragm is a planar filter screen structure, and the mesh density of the planar filter screen structure gradually increases along the oil flow direction, thereby forming a three-stage filtering gradient.

[0009] Preferably, the box body and the box cover are further provided, and the box body is clamped with the box cover to form a sealed bearing cavity, the oil receiving assembly is fixedly connected in the bearing cavity, the box body is internally provided with a return oil channel matched with the oil receiving assembly, the box cover is provided with an output oil channel and an input oil channel, the output oil channel is communicated with the oil inlet, and the input oil channel is communicated with the oil return port.

[0010] Preferably, the box body and the box cover are further provided, and the box body is clamped with the box cover to form a sealed bearing cavity, the oil receiving assembly is fixedly connected in the bearing cavity, the box body is internally provided with a return oil channel matched with the oil receiving assembly, the box cover is provided with an output oil channel and an input oil channel, the output oil channel is communicated with the oil inlet, and the input oil channel is communicated with the oil return port.

[0011] Preferably, the oil receiving assembly comprises a first oil guide plate and a second oil guide plate, the first oil guide plate and the second oil guide plate are identical in structure, the first oil guide plate is fixedly connected with the box cover, and the second oil guide plate is fixedly connected with the box body.

[0012] Preferably, the rear axle package is further provided, and the rear axle package is provided with a first oil channel and a second oil channel, the first oil channel is located at the upper end of the second oil channel, the first oil channel is communicated with the oil inlet, and the second oil channel is communicated with the oil return port.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] The utility model discloses through oil receiving assembly and filter to the lubricating oil is carried out automatic cleaning filtration, need not external power source, reduces additional energy consumption and additional cost, guarantees the endurance performance of vehicle.

[0015] The utility model discloses the impurity in lubricating oil is filtered through the front filter cavity, guarantees the cleanliness of the lubricating oil that returns to the box body, reduces the wear and tear of bearing, avoids the secondary damage of powder in lubricating oil to gearbox interior, prolongs the service life of bearing, avoided the problem that the gearbox bearing is caused early failure due to the cleanliness of lubricating oil is not enough. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the box body structure schematic diagram of the utility model.

[0017] Figure 2 It is the box cover internal structure schematic diagram of the utility model.

[0018] Figure 3 It is the box cover and filter connection structure schematic diagram of the utility model.

[0019] Figure 4 This is a schematic diagram of the forward structure of the filter diaphragm of this utility model, which is a planar filter screen.

[0020] Figure 5 This is a schematic diagram of the rubber pad structure of the filter diaphragm of this utility model, which is a planar filter screen.

[0021] Figure 6 This is a schematic diagram of the irregularly shaped shell structure of the filter diaphragm of this utility model, which is a planar filter screen.

[0022] Figure 7 This is a schematic diagram of the filter and its structure, where the filter diaphragm of this utility model has a bag-like structure.

[0023] Figure 8 This is a schematic diagram of the filter membrane of this utility model, which has a bag-like structure.

[0024] Figure 9 This is a schematic diagram of the filter diaphragm of this utility model, which is a bag-shaped rubber pad structure.

[0025] Figure 10 This is a schematic diagram of the irregularly shaped shell structure of the filter diaphragm of this utility model, which is a bag-shaped structure.

[0026] Figure 11 This is a schematic diagram of the connection structure between the rear bridge shell and the bag-shaped filter membrane of this utility model.

[0027] Figure 12 This is a schematic diagram of the connection structure between the rear bridge shell and the planar filter membrane of this utility model.

[0028] The following are the labeling elements in the diagram: 1. Housing; 2. Housing cover; 3. Bearing cavity; 4. Oil receiving assembly; 401. First oil guide plate; 402. Second oil guide plate; 403. Oil receiving plate; 5. Return oil passage; 6. Output oil passage; 7. Filter; 701. Irregularly shaped housing; 702. Oil inlet; 703. Return oil outlet; 704. Pre-filter chamber; 705. Rear oil collection chamber; 706. Filter diaphragm; 8. Input oil passage; 9. Fixing hole; 10. Rear axle housing; 1001. First oil passage; 1002. Second oil passage. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see the appendix Figures 1-12In this embodiment, the lubricating oil cleaning filter assembly, gearbox, and rear axle include a housing 1 and a housing cover 2. The housing 1 and the housing cover 2 are fastened together to form a sealed bearing cavity 3. An oil receiving assembly 4 is fixedly connected inside the bearing cavity 3. The housing 1 has a return oil passage 5 that cooperates with the oil receiving assembly 4. The housing cover 2 has an output oil passage 6 that cooperates with the oil receiving assembly 4. The output oil passage 6 is connected to a filter 7. An input oil passage 8 is fixedly connected to the lower side of the filter 7. The input oil passage 8 is fixedly connected to the housing cover 2.

[0031] The inner cavity of the gearbox is the bearing cavity 3. The oil receiving assembly 4 is located inside the bearing cavity 3. The oil receiving assembly 4 collects the lubricating oil splashed during gearbox operation. The oil receiving assembly 4 has a downward indentation in the middle, where the collected lubricating oil will converge. The inner wall of the housing 1 is provided with a recessed return oil channel 5. Part of the lubricating oil collected in the oil receiving assembly 4 will enter the inner end of the bearing chamber through the return oil channel 5 to lubricate the bearing, and the other part will enter the filter 7 through the output oil channel 6. The lower end of the filter 7 is connected to the inside of the housing 1 through the input oil channel 8. The height of the output oil channel 6 is higher than the height of the input oil channel 8. In this way, after the lubricating oil enters the filter 7, it will automatically enter the input oil channel 8 under the action of gravity. This way, without the need for an additional power source, the lubricating oil can be filtered in the filter 7 and then flow back into the housing 1, thereby completing the cleaning work of the lubricating oil and avoiding the influence of impurities in the lubricating oil on the gearbox.

[0032] Commonly used gearboxes in daily life include split-type and integrated-type. In an integrated gearbox, the gearbox body 1 and gearbox cover 2 are integrally stamped and cannot be separated. In a split-type gearbox, the gearbox body 1 and gearbox cover 2 are fixed by fixing bolts. Corresponding fixing holes 9 are provided on the outer edge of the gearbox body 1 and gearbox cover 2. The fixing holes 9 are arranged around the perimeter according to the outer contour of the gearbox body 1 and gearbox cover 2.

[0033] The component in the oil receiving assembly 4 used to collect lubricating oil is a horizontal plate. In an integrated gearbox, the horizontal plate spans the left and right sides inside the housing 1. In a split gearbox, the horizontal plate is formed by splicing a first oil guide plate 401 and a second oil guide plate 402. The end of the first oil guide plate 401 is fixed to the cover 2, and the end of the second oil guide plate 402 is fixed to the housing 1. The end faces of the first oil guide plate 401 and the second oil guide plate 402 are parallel to each other. When the housing 1 and the cover 2 are fastened together, the first oil guide plate 401 and the second oil guide plate 402 come into contact with each other, thereby forming a horizontal plate spanning the bearing cavity 3 to collect splashed lubricating oil.

[0034] An oil receiving plate 403 is fixedly connected inside the housing 1. The oil receiving plate 403 is located on the side of the second oil guide plate 402. The oil receiving plate 403 is placed at an angle and is located on the side of the return oil channel 5. The oil receiving plate 403 increases the collection area of ​​lubricating oil. At the same time, the cooperation between the oil receiving plate 403 and the second oil guide plate 402 can guide the flow of lubricating oil, so that the lubricating oil can smoothly enter the return oil channel 5.

[0035] The filter 7 used for filtering lubricating oil has a main body of an irregularly shaped housing 701. The upper end of the irregularly shaped housing 701 is an oil inlet 702, and the lower end is an oil return port 703. The oil inlet 702 is linked to the output oil passage 6, and the oil return port 703 is connected to the input oil passage 8. Lubricating oil enters the irregularly shaped housing 701 from the output oil passage 6 and the oil inlet 702, and flows back to the housing 1 from the oil return port 703 and the input oil passage 8. The irregularly shaped housing 701 has two chambers inside, the higher one being the pre-filter chamber 704, and the lower one being the post-filter chamber. The oil chamber 705 is divided into two chambers by a filter diaphragm 706. The filter diaphragm 706 filters the lubricating oil, and impurities in the lubricating oil are retained in the pre-filter chamber 704 above the filter diaphragm 706. The lubricating oil that has passed through the filter diaphragm 706 flows through the rear oil collection chamber 705 and then re-enters the housing 1. At this time, the lubricating oil entering the housing 1 is free of impurities, ensuring the cleanliness of the lubricating oil. The rubber gasket 707 is located between the irregularly shaped housing and the housing cover to ensure the fit of the irregularly shaped housing and avoid contact gaps.

[0036] The overall shape of the filter diaphragm 706 is a flexible bag-like structure (or a filter element shape). Its bag opening is fixed to the oil inlet 702 by a sealing clamp. In this way, the lubricating oil entering from the oil inlet 702 will be trapped inside the bag, and the contact surface between the lubricating oil and the filter diaphragm 706 will be larger, thereby improving the filtration efficiency of the filter diaphragm 706 for the lubricating oil.

[0037] like Figure 11 As shown, the rear axle housing has a first oil passage and a second oil passage. The lubricating oil splashed during the operation of the rear axle is collected in the first oil passage, and then enters the pre-filter chamber of the irregularly shaped housing of the present invention through the first oil passage. After being filtered by the filter membrane, it enters the rear oil collection chamber of the irregularly shaped filter, and then flows into the rear axle housing through the second oil passage. In this way, the lubricating oil is continuously cleaned and filtered when the rear axle is working, so as to keep the lubricating oil clean and extend the service life of the bearings inside the rear axle and the gearbox.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lubricating oil cleaning filter assembly, characterized in that: The filter (7) is connected to the outside of the component. The filter (7) includes a shaped housing (701). The shaped housing (701) is provided with a pre-filter chamber (704) and a post-oil collecting chamber (705). The pre-filter chamber (704) is provided with an oil inlet (702) communicating with the output oil passage (6). The post-oil collecting chamber (705) is provided with an oil return port (703) communicating with the input oil passage (8). A filter diaphragm (706) is provided between the pre-filter chamber (704) and the post-oil collecting chamber (705). The filter diaphragm (706) is fixedly connected to the shaped housing (701).

2. The lubricating oil cleaning filter assembly according to claim 1, characterized in that: A rubber pad (707) is installed on the inner side of the irregular shell (701). The filter membrane (706) is a flexible bag-shaped structure. The bag opening of the filter membrane (706) is connected to the oil inlet (702) by a sealing clamp.

3. The lubricating oil cleaning filter assembly according to claim 1, characterized in that: The filter membrane (706) has a planar filter structure. The mesh density of the planar filter structure gradually increases along the oil flow direction, forming a three-stage filtration gradient.

4. A gearbox, characterized in that: The lubricating oil cleaning and filtering assembly according to any one of claims 1-3 further includes: a housing (1) and a housing cover (2), wherein the housing (1) and the housing cover (2) are fastened together to form a sealed bearing cavity (3), an oil receiving assembly (4) is fixedly connected inside the bearing cavity (3), a return oil passage (5) that cooperates with the oil receiving assembly (4) is provided inside the housing (1), and an output oil passage (6) and an input oil passage (8) are provided on the housing cover (2), wherein the output oil passage (6) is connected to the oil inlet (702), and the input oil passage (8) is connected to the return oil port (703).

5. The gearbox according to claim 4, characterized in that: Both the box body (1) and the box cover (2) are provided with fixing holes (9), and fixing bolts are fitted into the fixing holes (9).

6. The gearbox according to claim 4, characterized in that: The oil receiving assembly (4) includes a first oil guide plate (401) and a second oil guide plate (402). The first oil guide plate (401) and the second oil guide plate (402) have the same structure. The first oil guide plate (401) is fixedly connected to the box cover (2), and the second oil guide plate (402) is fixedly connected to the box body (1).

7. A rear axle, characterized in that: The lubricating oil cleaning and filtering assembly according to any one of claims 1-3 further includes: a rear axle housing (10) having a first oil passage (1001) and a second oil passage (1002) on the rear axle housing, the first oil passage (1001) being located at the upper end of the second oil passage (1002), the first oil passage (1001) being connected to the oil inlet, and the second oil passage (1002) being connected to the oil return port.

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