Anti-blocking device for inner hole of planet wheel

Abstract

The utility model discloses a planet wheel inner hole anti-blocking device which comprises a sun wheel, a planet wheel, a planet carrier and an inner gear ring, an oil guide groove is formed in the side wall of the planet wheel inner hole and is of a spiral structure, an oil injection hole is formed in the surface of the planet wheel and is communicated with the oil guide groove, and a planet shaft is arranged on the planet carrier and is communicated with the planet carrier. An oil guide matching groove is formed in the outer wall of the planet shaft. The spiral oil guide groove and the oil guide matching groove provided by the utility model can enable lubricating oil to form dynamic flow in the inner hole of the planet wheel, and the flowing mode is beneficial for the lubricating oil to be uniformly distributed on the whole contact surface, so that each part needing to be lubricated can be fully covered by an oil film. Moreover, the plurality of oil ducts are arranged, and each oil duct is connected with different positions of the oil guide groove, so that the lubricating oil can be quickly distributed to each position of the inner hole of the planet wheel, and the lubricating effect can be quickly achieved.

Description

Technical Field

[0001] The utility model relates to a planetary gear inner hole anti-blocking device. Background Art

[0002] As a key transmission component under low-speed, heavy-load conditions, planetary gears form a friction-rotating pair with their inner bores and the mating planetary shafts. As the planetary gears rotate around the shafts, sufficient lubricant must flow between them to maintain proper operation. Otherwise, dry friction between the planetary gears and the shafts will occur, leading to abnormally high temperatures in the friction pair. This can cause adhesion and, in severe cases, even blockage, compromising transmission performance and service life. Utility Model Content

[0003] The main purpose of the utility model is to provide a planetary gear inner hole anti-blocking device to solve the problems raised in the above background technology.

[0004] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0005] A planetary gear inner hole anti-blocking device comprises a sun gear, a planetary gear, a planetary carrier and an inner gear ring, an oil guide groove is provided on the side wall of the planetary gear inner hole, the oil guide groove is a spiral structure, an oil filling hole is provided on the surface of the planetary gear, the oil filling hole is connected to the oil guide groove, a planetary shaft is provided on the planetary carrier, and an oil guide matching groove is provided on the outer wall of the planetary shaft.

[0006] Preferably, the oil guide matching groove is a spiral structure.

[0007] Preferably, the oil filling hole is arranged along the thickness direction of the planetary gear, and the top end of the oil filling hole is open and the bottom end is closed.

[0008] Preferably, the oil filling hole and the oil guide groove are connected via an oil channel.

[0009] Preferably, the oil guide groove is provided with four circles, the oil passages are provided with four circles, and both sides of each oil passage are connected to the oil guide groove and the oil filling hole.

[0010] Preferably, the oil passages are arranged perpendicular to the oil filling hole, and the four oil passages are evenly distributed along the thickness direction of the planetary gear.

[0011] Preferably, the edges of the oil guide groove and the oil guide matching groove are both provided with rounded corners.

[0012] Beneficial technical effects of the utility model:

[0013] The spiral-shaped oil guide groove and oil guide matching groove provided by this utility model enable the lubricating oil to form a dynamic flow within the inner bore of the planetary gear. This flow pattern helps the lubricating oil to be evenly distributed across the entire contact surface, ensuring that every part requiring lubrication receives an adequate oil film coverage. Furthermore, by providing multiple oil channels, each connecting to a different location of the oil guide groove, the lubricating oil can be quickly distributed to various locations within the inner bore of the planetary gear, providing a rapid lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the device structure of an embodiment of the present utility model;

[0015] Figure 2 A cross-sectional view of a planetary gear and a planetary carrier according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the planetary gear structure of an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the planetary carrier structure of an embodiment of the present utility model.

[0018] In the figure: 1. Sun gear; 2. Planet gear; 3. Planet carrier; 4. Ring gear; 5. Oil guide groove; 6. Oil filling hole; 7. Planet shaft; 8. Oil guide groove; 9. Oil channel. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is described in further detail below with reference to embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0020] like Figure 1-Figure 4 As shown, the planetary gear inner hole anti-blocking device provided in this embodiment includes a sun gear 1, a planetary gear 2, a planetary carrier 3 and an inner gear ring 4. An oil guide groove 5 is provided on the side wall of the inner hole of the planetary gear 2. The oil guide groove 5 is a spiral structure, which helps to evenly distribute the lubricating oil in the inner hole of the planetary gear 2, ensuring a more comprehensive lubrication effect, and can also promote the flow of lubricating oil, reduce the accumulation of oil in a single direction, thereby reducing the risk of blockage. An oil filling hole 6 is provided on the surface of the planetary gear 2, and the oil filling hole 6 is connected to the oil guide groove 5 to ensure that the lubricating oil can smoothly enter the oil guide groove 5. A planetary shaft 7 is provided on the planetary carrier 3, and an oil guide matching groove 8 is provided on the outer wall of the planetary shaft 7, which cooperates with the oil guide groove 5 to form a complete lubrication system, making the distribution of the lubricating oil more even. After the lubricating oil enters the oil guide groove 5, it will continue to enter the oil guide matching groove 8. The rotation of the planetary gear 2 will bring the lubricating oil to various positions between the inner hole of the planetary gear 2 and the planetary shaft 7 to ensure the lubrication effect.

[0021] In this embodiment, if Figure 2As shown, the oil guide matching groove 8 is a spiral structure, which matches the oil guide groove 5 and further promotes the uniform distribution and flow of the lubricating oil.

[0022] In this embodiment, if Figure 2 As shown, the oil filling hole 6 is arranged along the thickness direction of the planetary gear 2. The top end of the oil filling hole 6 is open and the bottom end is closed, which facilitates the injection of lubricating oil and prevents the lubricating oil from leaking.

[0023] In this embodiment, if Figure 2 As shown, the oil filling hole 6 and the oil guide groove 5 are connected by an oil channel 9 to form a complete lubrication channel to ensure that the lubricating oil can flow smoothly.

[0024] In this embodiment, if Figure 2 As shown, the oil guide groove 5 is provided with four circles, and the oil channels 9 are provided with four lines. Both sides of each oil channel 9 are connected to the oil guide groove 5 and the oil filling hole 6, ensuring that the lubricating oil can quickly enter various positions of the oil guide groove 5, quickly play a lubricating role, and reduce the risk of lubrication failure caused by blockage of a single oil channel 9.

[0025] In this embodiment, if Figure 2 As shown, the oil passages 9 are arranged perpendicular to the oil filling hole 6 , and the four oil passages 9 are evenly distributed along the thickness direction of the planetary gear 2 , which helps the lubricating oil to flow naturally into the oil guide groove 5 under the action of gravity.

[0026] In this embodiment, if Figure 2 As shown, the edges of the oil guide groove 5 and the oil guide matching groove 8 are both provided with rounded corners, which can reduce the retention of lubricating oil at the edges and further reduce the risk of clogging.

[0027] In summary, the spiral-shaped oil guide groove 5 and oil guide matching groove 8 provided in this embodiment enable the lubricating oil to form a dynamic flow within the inner bore of the planetary gear 2. This flow pattern helps to evenly distribute the lubricating oil across the entire contact surface, ensuring that each part requiring lubrication receives adequate oil film coverage. Furthermore, by providing multiple oil channels 9, each connecting to a different location of the oil guide groove 5, the lubricating oil can be rapidly distributed to various locations within the inner bore of the planetary gear 2, providing a rapid lubrication effect.

[0028] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present invention within the scope disclosed by the present invention, which falls within the protection scope of the present invention.

Claims

1. A planetary gear inner hole anti-blocking device, comprising a sun gear (1), a planetary gear (2), a planet carrier (3) and an inner gear ring (4), characterized in that: An oil guide groove (5) is provided on the side wall of the inner hole of the planetary gear (2), and the oil guide groove (5) is a spiral structure. An oil filling hole (6) is provided on the surface of the planetary gear (2), and the oil filling hole (6) is connected to the oil guide groove (5). A planetary shaft (7) is provided on the planetary carrier (3), and an oil guide matching groove (8) is provided on the outer wall of the planetary shaft (7).

2. The planetary gear inner hole anti-blocking device according to claim 1, characterized in that: The oil guide matching groove (8) is a spiral structure.

3. The planetary gear inner hole anti-blocking device according to claim 1, characterized in that: The oil filling hole (6) is arranged along the thickness direction of the planetary gear (2), and the top end of the oil filling hole (6) is open and the bottom end is closed.

4. The planetary gear inner hole anti-blocking device according to claim 1, characterized in that: The oil filling hole (6) and the oil guide groove (5) are connected via an oil channel (9).

5. The planetary gear inner hole anti-blocking device according to claim 4, characterized in that: The oil guide groove (5) is provided with four circles, and the oil passages (9) are provided with four lines. Both sides of each oil passage (9) are connected to the oil guide groove (5) and the oil filling hole (6).

6. The planetary gear inner hole anti-blocking device according to claim 5, characterized in that: The oil passages (9) are arranged perpendicular to the oil filling hole (6), and the four oil passages (9) are evenly distributed along the thickness direction of the planetary gear (2).

7. The planetary gear inner hole anti-blocking device according to claim 1, characterized in that: The edges of the oil guide groove (5) and the oil guide matching groove (8) are both provided with rounded corners.

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