Lubricating structure and drive axle with same

Abstract

The utility model discloses a lubrication structure and a drive axle with the same, the lubrication structure comprises a main speed reducer shell (10) and a planetary speed reducer (20) connected with the main speed reducer shell (10), the planetary speed reducer (20) comprises a planet carrier (211), and the lubrication structure further comprises a sealing assembly (30) arranged between the main speed reducer shell (10) and the planetary speed reducer (20) and used for sealing the planet carrier (211). The main speed reducer shell (10) is configured to be used for blocking lubricating oil in a sealed planetary speed reducer (20) from flowing to the main speed reducer shell (10); and the vent hole (221) is formed in a planetary reducer shell (22) of the planetary reducer (20) and is configured to be used for exhausting gas in the planetary reducer (20).

Description

Technical Field

[0001] This utility model relates to the field of road roller equipment, and in particular to a lubrication structure and a drive axle having the same. Background Technology

[0002] The operation of a road roller differs from that of general construction machinery. Road rollers do not use a turning mechanism to switch between forward and reverse directions. Instead, they typically achieve this by rotating the tires forward and backward via the drive axle. This means the front of the machine always faces the same direction when moving forward or backward. Currently, the lubrication and cooling between the front-mounted planetary reducer and the drive axle of a fully hydraulic road roller are sufficient on flat terrain. However, on steep slopes (up to 40%), the drive axle is positioned with the front higher than the rear. If this continues for extended periods, lubricating oil from the front reducer will flow back into the drive axle, causing insufficient lubrication in the gear system within the front reducer. This leads to overheating, tooth surface scuffing, and ultimately reduces the lifespan of the gear system. Utility Model Content

[0003] This solution addresses the problems and needs raised above by proposing a lubrication structure and a drive axle incorporating it. By adopting the following technical features, it achieves the aforementioned technical objectives and brings about several other technical benefits.

[0004] One objective of this utility model is to provide a lubrication structure, comprising a main reducer housing and a planetary reducer connected thereto, wherein the planetary reducer includes a planetary gear carrier and further comprises:

[0005] A sealing assembly is disposed between the main reducer housing and the planetary reducer, configured to prevent the lubricating oil inside the sealed planetary reducer from flowing to the main reducer housing;

[0006] A vent is provided on the planetary reducer housing of the planetary reducer and is configured to discharge gas from inside the planetary reducer.

[0007] In this technical solution, the lubrication structure can form an independent sealed cavity structure for the front reducer of the drive axle by setting a sealing component, so that it is not interconnected with the sealed cavity of the main reducer housing. This can ensure that when the drive axle is continuously operating on a sloping road surface for a long time, the front reducer is not affected by the construction slope, and the lubricating oil in the front reducer does not flow back into the drive axle, and the lubricating oil does not decrease. It can always provide lubrication for the transmission components in the front reducer. Moreover, the structure is simple, easy to manufacture, and highly reliable.

[0008] In addition, the lubrication structure according to this utility model may also have the following technical features:

[0009] In one example of this utility model, the sealing assembly is a combined oil seal structure; wherein, the combined oil seal structure is at least one of a single-lip, double-lip, and multi-lip oil seal.

[0010] In one example of this utility model, a vent plug is provided on the vent hole, and the vent plug is configured to allow gas to be discharged from the inside of the planetary reducer to the outside only.

[0011] In one example of this invention, it further includes an air passage that is opened on and passes through the planetary gear carrier to facilitate the flow of gas inside the planetary reducer housing.

[0012] In one example of this invention, the air passage is positioned above the level of the lubricating oil inside the planetary reducer housing.

[0013] In one example of this utility model, it further includes an oil passage, which is formed on and passes through the planetary gear carrier to increase the storage volume of the lubricating oil and the heat dissipation area of ​​the lubricating oil.

[0014] In one example of this utility model, the oil passages include a plurality of oil passages, which are spaced apart along the circumferential direction of the planetary gear carrier.

[0015] In one example of this invention, the oil passage is located below the level of the lubricating oil inside the planetary reducer housing.

[0016] In one example of this utility model, the inner diameter of the oil passage is 15-20 mm.

[0017] Another objective of this invention is to provide a drive axle that includes the lubrication structure described above.

[0018] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. The drawings are merely illustrative of some embodiments of this utility model and are not intended to limit the scope of all embodiments of this utility model.

[0020] Figure 1 This is a schematic diagram of the lubrication structure according to an embodiment of the present utility model;

[0021] Figure 2 This is an internal cross-sectional view of the lubrication structure according to an embodiment of the present invention.

[0022] List of reference numerals in the attached diagram:

[0023] Lubrication structure 100;

[0024] Main reducer housing 10;

[0025] Planetary reducer 20;

[0026] Planetary reducer body 21;

[0027] Planetary gear carrier 211;

[0028] Planetary gear reducer housing 22;

[0029] Vent 221;

[0030] Sealing assembly 30;

[0031] 40 breather plug;

[0032] Airway 50;

[0033] Oil passage 60;

[0034] Filler neck 70;

[0035] Oil drain hole 80;

[0036] Oil level observation hole 90. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0039] According to a lubrication structure 100 of the first aspect of this utility model, such as Figure 1 and Figure 2 As shown, the system includes a main reducer housing 10 and a planetary reducer connected thereto. The planetary reducer includes a planetary reducer body 21 and a planetary reducer housing 22 disposed outside it. The planetary reducer body 21 includes a planetary gear carrier 211 and planetary gears 212, with the planetary gears 212 connected to the planetary gear carrier 211. The system also includes:

[0040] A sealing assembly 30 is disposed between the main reducer housing 10 and the planetary reducer 20, and is configured to block the flow of lubricating oil in the sealed planetary reducer to the main reducer housing 10.

[0041] Vent 221 is provided on the planetary reducer housing 22 of the planetary reducer 20 and is configured to discharge gas inside the planetary reducer 20.

[0042] The lubrication structure 100, by setting the sealing component 30, can form an independent sealed cavity structure for the front reducer of the drive axle, so that it is not interconnected with the sealed cavity of the main reducer housing 10. This ensures that when the drive axle is continuously operating on a sloping road surface for a long time, the front reducer is not affected by the construction slope, and the lubricating oil in the front reducer does not flow back into the drive axle, and the lubricating oil does not decrease. It can always provide lubrication for the transmission components in the front reducer. Moreover, the structure is simple, easy to manufacture, and highly reliable.

[0043] In one example of this utility model, the sealing component 30 is a combined oil seal structure; wherein, the combined oil seal structure is at least one of a single-lip, double-lip, and multi-lip oil seal.

[0044] Specifically, the combined oil seal structure, through the combination of a metal shell, spring, and sealing material, can maintain a good sealing effect under high-speed rotation and high-pressure environments, preventing lubricating oil leakage; it can withstand high temperature fluctuations and is suitable for the sealing needs of various mechanical equipment. It has good wear resistance: the metal shell and wear-resistant ring design of the combined oil seal enable it to withstand long-term friction and wear, extending its service life. It has strong corrosion resistance: some combined oil seals use a metal-rubber or PTFE-rubber combination, which has good corrosion resistance and is suitable for harsh working environments. Installation is convenient: although installation is relatively complex, once installed, the combined oil seal has a stable sealing effect and low maintenance costs. Therefore, the combined oil seal structure can adapt to the application environment of this utility model.

[0045] In one example of this utility model, a vent plug 40 is provided on the vent 221, and the vent plug 40 is configured to allow gas to be discharged from the inside of the planetary reducer 20 to the outside only.

[0046] By setting the vent plug 40, the gas generated inside the planetary reducer 20 can be effectively discharged, and external gas or impurities can be prevented from entering the planetary reducer 20, thereby improving the safety and reliability of the vent 221.

[0047] In one example of this utility model, it further includes: an air passage 50, which is opened on and passes through the planetary gear carrier 211 to facilitate the flow of gas inside the planetary reducer housing 22;

[0048] In short, the presence of the air passage 50 can promote the flow of gas inside the planetary reducer housing 22, thereby facilitating the discharge of gas inside the planetary reducer housing 22.

[0049] In one example of this utility model, the air passage 50 is positioned higher than the level of the lubricating oil inside the planetary reducer housing 22;

[0050] This prevents lubricating oil from flowing into the air passage 50, thus affecting the air passage 50's function in gas flow.

[0051] In one example of this utility model, it further includes an oil passage 60, which is provided on and through the planetary gear carrier 211. By providing the oil passage 60, the storage volume of the lubricating oil and the heat dissipation area of ​​the lubricating oil can be increased.

[0052] In one example of this utility model, the oil passage 60 includes a plurality of oil passages 60, which are spaced apart along the circumferential direction of the planetary gear carrier 211; by providing a plurality of oil passages 60, the storage volume of lubricating oil and the heat dissipation area of ​​lubricating oil can be further increased.

[0053] In one example of this utility model, the oil passage 60 is located below the level of the lubricating oil inside the planetary reducer housing 22; by placing the oil passage 60 below the level of the lubricating oil, the storage function of the oil passage 60 for the lubricating oil and its heat dissipation function for the lubricating oil can be guaranteed.

[0054] In one example of this utility model, the inner diameter of the oil passage 60 is 15-20 mm.

[0055] In one example of this utility model, an oil filling hole 70 and an oil drain hole 80 are provided on the planetary reducer housing 22, and are respectively sealed with oil plugs; wherein the oil filling hole 70 is used to add lubricating oil into the planetary reducer housing 22, and the oil drain hole 80 is used to drain the lubricating oil in the planetary reducer housing 22.

[0056] In one example of this utility model, an oil level observation hole 90 is provided on the planetary reducer housing 22. The hole is located on the side of the planetary reducer housing 22 and is sealed with a transparent element, such as transparent glass, so as to facilitate observation of the lubricating oil level inside the planetary reducer housing 22.

[0057] A drive axle according to a second aspect of the present invention includes a lubrication structure 100 as described above.

[0058] The lubrication structure 100 of the drive axle can form an independent sealed cavity structure for the front reducer of the drive axle by setting the sealing component 30, so that it is not interconnected with the sealed cavity of the main reducer housing 10. This can ensure that when the drive axle is continuously operating on a sloping road surface for a long time, the front reducer is not affected by the construction slope, and the lubricating oil in the front reducer does not flow back into the drive axle, and the lubricating oil does not decrease. It can always provide lubrication for the transmission components in the front reducer.

[0059] The above description, with reference to preferred embodiments, details the exemplary implementation of the lubrication structure 100 and the drive axle having it. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims

1. A lubrication structure comprising a main reducer housing (10) and a planetary reducer (20) connected thereto, wherein, The planetary reducer (20) includes a planetary gear carrier (211), characterized in that it further includes: A sealing assembly (30) is disposed between the main reducer housing (10) and the planetary reducer (20) and is configured to block the flow of lubricating oil in the sealed planetary reducer (20) to the main reducer housing (10). A vent (221) is provided on the planetary reducer housing (22) of the planetary reducer (20) and is configured to discharge gas inside the planetary reducer (20).

2. The lubrication structure according to claim 1, characterized in that, The sealing assembly (30) is a combined oil seal structure; wherein the combined oil seal structure is at least one of a single-lip, double-lip, and multi-lip oil seal.

3. The lubrication structure according to claim 1, characterized in that, A vent plug (40) is provided on the vent hole (221), and the vent plug (40) is configured to allow gas to be discharged from the inside of the planetary reducer (20) to the outside only.

4. The lubrication structure according to claim 1, characterized in that, It also includes: an air passage (50) which is opened on and through the planetary gear carrier (211) to facilitate the flow of gas inside the planetary reducer housing (22).

5. The lubrication structure according to claim 4, characterized in that, The air passage (50) is located above the level of the lubricating oil inside the planetary reducer housing (22).

6. The lubrication structure according to claim 1, characterized in that, It also includes an oil passage (60), which is located on and runs through the planetary gear carrier (211) to increase the storage volume of the lubricating oil and increase the heat dissipation area of ​​the lubricating oil.

7. The lubrication structure according to claim 6, characterized in that, The oil passages (60) include a plurality of oil passages (60) which are spaced apart along the circumferential direction of the planetary gear carrier (211).

8. The lubrication structure according to claim 6, characterized in that, The oil passage (60) is located below the level of the lubricating oil inside the planetary reducer housing (22).

9. The lubrication structure according to claim 6, characterized in that, The inner diameter of the oil passage (60) is 15-20 mm.

10. A drive axle, characterized in that, Includes the lubrication structure (100) as described in any one of claims 1 to 9.

Images