Planetary gear wear-resistant structure

Abstract

The utility model discloses a kind of planetary gear resistance to wear structure, including gear ring, at least one planetary gear is engaged in the gear ring interior;Sun gear is set at the gear ring center place, and is engaged with planetary gear, rotating shaft is connected with the one side of the sun gear, oiling channel is opened in the rotating shaft interior axially;Wherein, oil storage cavity that is communicated with the oiling channel is opened in the sun gear interior.The utility model passes through being provided with the rotating shaft with oiling channel and the sun gear with oil storage cavity, so that lubricating oil can be exuded on the gear tooth surface of sun gear by oil block, each gear tooth surface that is continuously engaged can be supplemented with lubricating oil in real time, effectively reduce the wear of each gear tooth engagement, improve the wear resistance of planetary gear whole, by being provided with positioning assembly, so that planetary gear can be mutually supported, the position of sun gear also obtains firm, improve the stability of the planetary gear overall structure.

Description

Technical Field

[0001] This utility model specifically relates to a wear-resistant structure for planetary gears. Background Technology

[0002] Planetary gears are a type of planetary gear train, a coaxial transmission device with one degree of freedom. They are a special type of gear system characterized by their non-fixed axis of rotation, allowing them to rotate around the axes of other gears along with the planet carrier. This characteristic enables planetary gears to seamlessly transmit torque among multiple gears, and they feature a compact design and high load-bearing capacity. They can rotate not only around their own axis but also around the axis of the sun gear along with the planet carrier. The transmission ratio can be calculated using the transformation gear train method. They are characterized by a compact structure, a large transmission ratio, and good power distribution smoothness. Currently, when planetary gears are in use, both the planetary gears and the sun gear are located inside the gear ring. The teeth mesh for a long time, which can easily lead to insufficient oil and interference. It is necessary to add lubricating oil to the tooth surfaces. Common methods include immersing the sun gear or gear ring in an oil bath while it rotates, which will carry the lubricating oil up and splash it onto each meshing tooth surface, or using an oil pump to pressurize the lubricating oil and spray it onto the meshing tooth surfaces through a pipeline. However, the above-mentioned methods of adding lubricating oil require the use of an external oil bath or oil pump. The planetary gears themselves cannot supply oil to the meshing points, which poses a risk of increased wear on the gear teeth due to untimely oil supply. In addition, the above methods have a low oil supply frequency, which is not conducive to frequently adding lubricating oil to the meshing points, thus challenging the overall wear resistance of the planetary gears and greatly reducing it. At the same time, the lack of a positioning structure between the planetary gears and the sun gear leads to unstable operation of the overall planetary gear structure, which also needs to be improved.

[0003] Therefore, it is necessary to invent a planetary gear wear-resistant structure to solve the above problems. Utility Model Content

[0004] (a) Purpose of the utility model To address the technical problems existing in the background art, this utility model proposes a planetary gear wear-resistant structure. By setting a rotating shaft with an oil injection channel and a sun gear with an oil storage chamber, lubricating oil can seep out onto the tooth surface of the sun gear through the oil plug, which can replenish lubricating oil to each continuously meshing tooth surface in real time, effectively reducing the wear of each gear tooth during meshing and improving the overall wear resistance of the planetary gear. By setting a positioning component, the planetary gears can support each other, and the position of the sun gear is also stabilized, improving the overall stability of the planetary gear structure.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a planetary gear wear-resistant structure, comprising a gear ring, wherein at least one planetary gear is meshed inside the gear ring; The sun gear is located at the center of the gear ring and meshes with the planetary gear. A rotating shaft is connected to one side of the sun gear, and an oil injection channel is axially opened inside the rotating shaft. The sun gear has an oil storage chamber connected to the oil injection channel inside, and the outer surface of the sun gear has at least one oil outlet, which is filled with an oil plug. A positioning component is disposed on one side of the gear ring and is used to position the gear ring, planetary gears, and sun gear.

[0006] Preferably, the sun gear has a through hole on one side wall near the rotating shaft, and the oil storage chamber is connected to the oil injection channel through the through hole.

[0007] Preferably, the oil outlet is located between any two teeth on the sun gear, and each oil outlet is connected to the oil storage chamber.

[0008] Preferably, the oil-blocking block is a sponge block, and the number of teeth on the sun gear is not equal to the number of teeth on the planetary gear.

[0009] Preferably, a stopper plate is connected to the inlet at the end of the rotating shaft away from the sun gear.

[0010] Preferably, the positioning assembly includes a shaft connected to each planetary gear and a positioning frame located on one side of the gear ring, wherein the right end of each shaft and the right end of the rotating shaft pass through the positioning frame and are connected to the positioning frame via bearings.

[0011] Preferably, a sleeve is also fitted on the outside of the rotating shaft, and an annular plate is connected to the outer side of the sleeve near the positioning frame. The annular plate is connected to the positioning frame.

[0012] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are: 1. This utility model, by setting a rotating shaft with an oil injection channel and a sun gear with an oil storage chamber, allows lubricating oil to seep out onto the tooth surface of the sun gear through the oil plug. When the sun gear, planetary gears, and ring gear mesh, the lubricating oil is gradually applied to each tooth surface. This makes the planetary gear have its own oil supply system during use, which can replenish lubricating oil to each meshing tooth surface in real time. The sun gear, planetary gears, and ring gear can maintain lubrication for a long time, effectively reducing wear during the meshing of each tooth and improving the overall wear resistance of the planetary gear. 2. By providing a positioning component, this utility model allows multiple planetary gears and the sun gear to be assembled into a whole, with the planetary gears supporting each other. At the same time, the rotating shaft also passes through the positioning frame, which stabilizes the position of the sun gear and improves the overall stability of the planetary gear structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a perspective view of the present utility model; Figure 3 This is a distribution diagram of the oil outlet and the oil plug of this utility model; Figure 4 This is an exploded view of the planetary gear, rotating shaft, and plug plate of this utility model; Figure 5 This is a schematic diagram of the planetary gear of this utility model; Figure 6 This is a perspective view of the present invention from another angle.

[0014] Explanation of reference numerals in the attached figures: 1. Gear ring, 2. Planetary gear, 3. Sun gear, 4. Rotating shaft, 5. Oil inlet channel, 6. Oil reservoir, 7. Oil outlet, 8. Oil plug, 9. Positioning assembly, 91. Shaft, 92. Positioning bracket, 93. Bearing, 94. Sleeve, 95. Annular plate; 10. Through hole, 11. Plug plate. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model provides, for example Figure 1-6 The planetary gear wear-resistant structure shown includes a gear ring 1, wherein at least one planetary gear 2 is meshed inside the gear ring 1; The sun gear 3 is located at the center of the gear ring 1 and meshes with the planetary gear 2. A rotating shaft 4 is connected to one side of the sun gear 3, and an oil injection channel 5 is axially opened inside the rotating shaft 4. The sun gear 3 has an oil storage chamber 6 that communicates with the oil injection channel 5, and the outer surface of the sun gear 3 has at least one oil outlet 7, which is filled with an oil plug 8. A positioning component 9 is disposed on one side of the gear ring 1 and is used to position the gear ring 1, the planetary gears 2 and the sun gear 3. The positioning component 9 includes a shaft 91 connected to each planetary gear 2 and a positioning frame 92 located on one side of the gear ring 1. The right end of each shaft 91 and the right end of the rotating shaft 4 pass through the positioning frame 92 and are connected to the positioning frame 92 through a bearing 93.

[0017] In one embodiment, a through hole 10 is provided on the side wall of the sun gear 3 near the rotating shaft 4. The oil storage chamber 6 is connected to the oil injection channel 5 through the through hole 10. The oil outlet 7 is provided between any two teeth on the sun gear 3. Each oil outlet 7 is connected to the oil storage chamber 6, so that the lubricating oil in the oil injection channel 5 can be transferred to the interior of the oil storage chamber 6 and then permeate the interior of the oil plug 8.

[0018] In one embodiment, the oil-blocking block 8 is set as a sponge block, which can ensure that the lubricating oil stored inside the sun gear 3 will not leak when the sun gear 3 is not rotating, thus avoiding waste. The number of teeth of the sun gear 3 is not equal to the number of teeth of the planetary gear 2. As the sun gear 3 rotates continuously, the tooth surface with the oil outlet 7 can mesh with each tooth surface on the planetary gear 2, thereby ensuring that each tooth surface on the sun gear 3 and the planetary gear 2 is coated with lubricating oil, which greatly improves wear resistance.

[0019] In one embodiment, a stopper plate 11 is connected to the inlet of the end of the rotating shaft 4 away from the sun gear 3 to prevent the lubricating oil in the oil channel 5 and the oil storage chamber 6 from leaking, and also to facilitate the subsequent replenishment of lubricating oil into the oil storage chamber 6 by the operator.

[0020] In one embodiment, a sleeve 94 is also sleeved on the outside of the rotating shaft 4. An annular plate 95 is connected to the outer side of the sleeve 94 near the positioning frame 92. The annular plate 95 is connected to the positioning frame 92. The sleeve 94 can be connected to an external driving component, and the rotating shaft 4 can also be connected to another external driving component. This allows the planetary gear to select either the sun gear 3 or the planetary gear 2 as the input component when in use, thus improving the adaptability of the planetary gear when in use.

[0021] The specific implementation method is as follows: Before using this utility model, the operator unscrews the plug plate 11 and pours the lubricating oil or semi-fluid grease with good fluidity into the oil injection channel 5. As the lubricating oil is continuously injected, it can flow through the through hole 10 into the oil storage chamber 6 and thus be stored inside the sun gear 3. Then the plug plate 11 is screwed in. When the sun gear 3 is in use, the lubricating oil inside it flows along the outer ring of the oil reservoir under the action of centrifugal force. At this time, the oil plug 8 is soaked with lubricating oil. When the sun gear 3 meshes with the planetary gear 2, the oil plug 8 is squeezed and the lubricating oil seeps onto the tooth surface of the sun gear 3. After the lubricated teeth of the planetary gear 2 mesh with the lubricated teeth of the sun gear 3, the lubricating oil is transferred to the tooth surface of the planetary gear 2. Furthermore, as the planetary gear 2 rotates, the lubricating oil is also transferred to the tooth surface of the ring gear 1 through the meshing of the planetary gear 2 with the ring gear 1. Since the number of teeth of the sun gear 3, planetary gear 2, and ring gear 1 are not the same, as the sun gear 3 continues to rotate, the lubricating oil on its surface will be further transferred to the tooth surface of the ring gear 1. The lubricating oil on the tooth surface will contact each tooth surface on the planetary gear 2. The lubricated tooth surface on the planetary gear 2 will then react with the tooth surface on the sun gear 3 that does not have an oil outlet 7, so that its outer surface is also coated with lubricating oil. This is then transmitted to the tooth surface of the ring gear 1 through the tooth surface of the planetary gear 2. As a result, the outer surface of each tooth surface of the sun gear 3, planetary gear 2, and ring gear 1 is coated with lubricating oil. When the planetary gear is in use, it has its own oil supply system, which can replenish the lubricating oil to each continuously meshing tooth surface in real time, so that the sun gear 3, planetary gear 2, and ring gear 1 are kept lubricated, effectively reducing the wear of each tooth during meshing and improving the overall wear resistance of the planetary gear. Furthermore, by setting the positioning component 9, multiple planetary gears 2 and sun gear 3 can be assembled into a whole, that is, multiple planetary gears 2 are indirectly connected to each other and can support each other. While rotating on their own axis, they revolve around the sun gear 3 stably and synchronously. At the same time, the rotation axis 4 is also set through the positioning frame 92, so that the position of the sun gear 3 is also stabilized, thereby improving the stability of the overall structure of the planetary gear. This implementation method specifically solves the problems in the prior art where the planetary gears themselves cannot supply oil to the meshing point, which poses a risk of increased wear of the gear teeth due to untimely oil supply and is not conducive to frequent addition of lubricating oil to the meshing point, thus challenging and greatly reducing the overall wear resistance of the planetary gears; at the same time, the lack of a positioning structure between the planetary gear 2 and the sun gear 3 leads to unstable operation of the overall planetary gear structure, which also needs to be improved.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used above are only some embodiments recorded in this utility model. Obviously, those skilled in the art can obtain other drawings based on these drawings.

[0023] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wear-resistant structure for planetary gears, characterized in that, include: A gear ring (1), wherein at least one planetary gear (2) is meshed inside the gear ring (1); The sun gear (3) is located at the center of the gear ring (1) and meshes with the planetary gear (2). A rotating shaft (4) is connected to one side of the sun gear (3), and an oil injection channel (5) is axially opened inside the rotating shaft (4). The sun gear (3) has an oil storage chamber (6) connected to the oil injection channel (5) inside, and at least one oil outlet (7) is opened on the outer surface of the sun gear (3), and the oil outlet (7) is filled with an oil plug (8). A positioning component (9) is disposed on one side of the gear ring (1) for positioning the gear ring (1), the planetary gear (2), and the sun gear (3).

2. The planetary gear wear-resistant structure according to claim 1, characterized in that: The sun gear (3) has a through hole (10) on one side wall near the rotating shaft (4), and the oil storage chamber (6) is connected to the oil injection channel (5) through the through hole (10).

3. The planetary gear wear-resistant structure according to claim 1, characterized in that: The oil outlet (7) is located between any two teeth on the sun gear (3), and each oil outlet (7) is connected to the oil storage chamber (6).

4. The planetary gear wear-resistant structure according to claim 3, characterized in that: The oil-blocking block (8) is set as a sponge block, and the number of teeth of the sun gear (3) is not equal to the number of teeth of the planetary gear (2).

5. The planetary gear wear-resistant structure according to claim 1, characterized in that: A stopper plate (11) is connected to the end of the rotating shaft (4) away from the sun gear (3).

6. The planetary gear wear-resistant structure according to claim 1, characterized in that: The positioning assembly (9) includes a shaft (91) connected to each planetary gear (2) and a positioning frame (92) located on one side of the gear ring (1), wherein the right end of each shaft (91) and the right end of the rotating shaft (4) pass through the positioning frame (92) and are connected to the positioning frame (92) via a bearing (93).

7. The planetary gear wear-resistant structure according to claim 6, characterized in that: A sleeve (94) is also fitted on the outside of the rotating shaft (4). An annular plate (95) is connected to the outside of the sleeve (94) near the positioning frame (92). The annular plate (95) is connected to the positioning frame (92).

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