CN223609268U - Mixed-motion planetary gear lubrication structure - Google Patents
Mixed-motion planetary gear lubrication structureInfo
- Publication number
- CN223609268U CN223609268U CN202520257741.1U CN202520257741U CN223609268U CN 223609268 U CN223609268 U CN 223609268U CN 202520257741 U CN202520257741 U CN 202520257741U CN 223609268 U CN223609268 U CN 223609268U
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- oil
- planet
- planet carrier
- duct
- wheel
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Abstract
According to the mixed-motion planet row lubricating structure, the planet carrier extends out of the speed reducer shell and is connected with the engine, the gear pump positioned in the upper oil suction channel is assembled on the planet carrier and coaxially rotates along with the planet carrier, oil in the speed reducer shell is sucked into the upper oil suction channel and pumped into the planet carrier oil channel, the oil is guided into the thrust ball bearing through the planet carrier oil channel, the oil is guided into the needle roller bearing through the planet shaft oil channel, the oil is guided onto the planet wheel gear through the oil passing hole on the gasket, active lubrication of the bearings and the gears in the planet row is formed, the lubricating effect is ensured, the lubricating reliability is improved, the gear pump is arranged on the planet carrier and driven by the engine, the rotating speed of the gear pump is improved by utilizing the characteristics that the engine in an optimal injected efficiency area and the rotating speed in the mixed-motion system is utilized, the lubricating reliability is ensured, the energy consumption is reduced, and the mixed-motion cost is reduced.
Description
Technical Field
The utility model relates to a mixed planetary gear lubrication structure, and belongs to the technical field of planetary gear reducer lubrication.
Background
The existing hybrid transmission mostly adopts a transmission mode of a gear set, and the hybrid planetary gear is a main power driving source of a power synthesis box of a new energy automobile, and the service life and the service performance of the hybrid planetary gear are directly influenced by the lubrication effect of the hybrid planetary gear. The traditional lubrication structure is that the whole oil stirring and splashing lubrication of a transmission system is realized, but the oil stirring and splashing lubrication loss is overlarge, and the splashing lubrication oil is less, so that the problem of insufficient lubrication exists on rotating parts such as a support bearing, a needle bearing and the like in a planetary row, therefore, the lubrication of the conventional hybrid planetary row speed reducer is mainly forced lubrication (also called active lubrication), namely, an electronic pump is utilized to pump oil into a central hole of an input shaft, and the oil is thrown out to the bearing along the radial direction through a hole on the input shaft for lubrication.
Disclosure of utility model
The mixing planetary gear lubricating structure provided by the utility model ensures the lubricating effect, improves the lubricating reliability, is provided with the gear pump on the planet carrier and driven by the engine, and utilizes the characteristics of the optimal injection efficiency area and high rotating speed of the engine in the mixing system, namely, the rotating speed of the gear pump is improved, the lubricating reliability is ensured, the energy consumption is reduced, and the mixing cost is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The mixed planet row lubricating structure comprises a planet carrier, a planet wheel, a sun wheel, an inner ring and a gear ring, wherein one end of the planet carrier extends out of a speed reducer shell and is connected with an engine, the planet wheel is assembled on the planet carrier, the sun wheel is meshed with the planet wheel, the inner end of the planet carrier is supported on the inner end of the sun wheel through a thrust ball bearing, the planet wheel is assembled on a planet shaft on the planet carrier through a needle bearing, and a gasket is arranged between the planet carrier and the end face of the planet wheel.
Preferably, a strainer for filtering oil is arranged at the lower end of the upper oil suction duct, the upper end of the upper oil suction duct is an annular oil duct arranged at the periphery of the planet carrier, and the gear pump is assembled in the annular oil duct.
Preferably, the planet carrier oil duct comprises a first oil duct communicated with the upper end of the upper oil suction duct and the inner hole of the planet carrier and in a cross shape, a second oil duct arranged on the periphery of the inner hole of the planet carrier and communicated with the first oil duct, a bowl-shaped plug piece I is assembled on the end face of the inner hole of the planet carrier in a sealing manner, a bowl-shaped plug piece II is assembled on the end face of the inner hole of the sun wheel in a sealing manner, the bowl-shaped plug piece I and the bowl-shaped plug piece II are arranged in a two-to-two manner, the second oil duct is communicated with the oil duct of the planet shaft, and oil is led into the thrust ball bearing.
Preferably, an axial oil passage III is formed between the thrust ball bearing and the planet carrier, and the oil passage III guides the oil flowing through the thrust ball bearing to the planet gear.
Preferably, the planetary shaft oil duct comprises an oil duct IV which is communicated with the oil duct III and is axially arranged along the planetary shaft, and an oil duct V which is communicated with the oil duct IV to guide oil into the needle bearing, wherein the oil duct V is radially arranged along the planetary shaft.
The beneficial effects of the utility model are as follows:
According to the mixed-motion planet row lubricating structure, the planet carrier extends out of the speed reducer shell and is connected with the engine, the gear pump positioned in the upper oil suction channel is assembled on the planet carrier and coaxially rotates along with the planet carrier, oil in the speed reducer shell is sucked into the upper oil suction channel and pumped into the planet carrier oil channel, the oil is guided into the thrust ball bearing through the planet carrier oil channel, the oil is guided into the needle roller bearing through the planet shaft oil channel, the oil is guided onto the planet wheel gear through the oil passing hole on the gasket, active lubrication of the bearings and the gears in the planet row is formed, the lubricating effect is ensured, the lubricating reliability is improved, the gear pump is arranged on the planet carrier and driven by the engine, the rotating speed of the gear pump is improved by utilizing the characteristics that the engine in an optimal injected efficiency area and the rotating speed in the mixed-motion system is utilized, the lubricating reliability is ensured, the energy consumption is reduced, and the mixed-motion cost is reduced.
Drawings
Fig. 1 is a schematic diagram of a lubrication structure of a mixing planetary gear set in an embodiment.
Fig. 2 is an enlarged partial schematic view of fig. 1.
Detailed Description
Embodiments of the present utility model are described in detail below with reference to fig. 1-2.
The mixed planet row lubricating structure comprises a planet carrier 1, a planet wheel 2, a sun wheel 3, an inner ring and a gear ring, wherein one end of the planet carrier 1 extends out of a speed reducer shell 8 and is connected with an engine, the planet wheel 2 is assembled on the planet carrier 1, the sun wheel 3 is meshed with the planet wheel 2, the inner end of the planet carrier 1 is supported on the inner end of the sun wheel 3 through a thrust ball bearing 4, the planet wheel 2 is assembled on a planet shaft 6 on the planet carrier 1 through the needle bearing 5, a gasket 7 is arranged between the end faces of the planet carrier 1 and the planet wheel 2, and the mixed planet row lubricating structure is characterized in that an upper oil suction channel 9 is arranged on the speed reducer shell 8, a planet carrier oil channel 10 which is communicated with the upper oil suction channel 9 and can guide oil into the thrust ball bearing 4 is arranged on the planet carrier 1, an oil through hole 12 which is communicated with the planet carrier oil channel 10 and guides oil into the needle bearing 5 is arranged on the gasket 7, oil holes 12 which guide oil flowing into the planet wheel 2 through the needle bearing 5 are arranged on the planet carrier 1, and oil suction channels 13 and 13 in the gear pump shell 9 are arranged on the planet carrier 1 and synchronously rotate along with the carrier 1 to pump oil suction channels 9 in the speed reducer shell 8 and the oil suction channels 10 are arranged on the planet carrier.
According to the mixed planetary gear lubricating structure, the planet carrier 1 extends out of the speed reducer shell 8 and is connected with the engine, the gear pump 13 positioned in the upper oil suction channel 9 is assembled on the planet carrier 1, the gear pump 13 coaxially rotates along with the planet carrier 1, oil in the speed reducer shell 8 is sucked into the upper oil suction channel 9 and pumped into the planet carrier oil channel 10, the oil is guided into the thrust ball bearing 4 through the planet carrier oil channel 10, the oil is guided into the needle bearing 5 through the planet shaft oil channel 11, the oil is guided into the planet wheel 2 through the oil passing holes 12 on the gasket 7, active lubrication of the bearings and the gears in the planet gear is formed, the lubricating effect is ensured, the lubricating reliability is improved, the gear pump is arranged on the planet carrier and driven by the engine by utilizing the characteristics of optimal injection efficiency area and high rotating speed of the engine in the mixed system, namely the rotating speed of the gear pump is improved, the lubricating reliability is ensured, the energy consumption is reduced, and the mixed cost is reduced.
Wherein, the lower end of the upper oil suction channel 9 is provided with a strainer 14 for filtering oil, the upper end of the upper oil suction channel 9 is an annular oil channel 91 arranged at the periphery of the planet carrier, and the gear pump 13 is assembled in the annular oil channel 91. When the gear pump 9 operates, oil in the reducer shell is sucked upwards into the upper oil suction channel 9, the strainer 14 filters the sucked oil, and the oil moves upwards into the annular oil channel 91 after being filtered by the strainer 14 and is pumped into the planet carrier oil channel 10 by the gear pump 9.
The planet carrier oil duct 10 comprises a first oil duct 101 communicated with the upper end of the upper oil duct 9 and the inner planet carrier hole 15 and in a cross shape, a second oil duct 102 arranged on the periphery of the inner planet carrier hole and communicated with the first oil duct 101, a first bowl-shaped plug piece 16 is assembled on the end face of the inner planet carrier hole 15 in a sealing mode, a second bowl-shaped plug piece 17 is assembled on the end face of the inner hole of the sun wheel 2 in a sealing mode, the first bowl-shaped plug piece 16 and the second bowl-shaped plug piece 17 are arranged oppositely, the second oil duct 102 is communicated with the inner planet shaft oil duct 11, and oil is led into the thrust ball bearing 4. The first bowl-shaped plug piece 16 seals the inner hole 15 of the planet carrier, oil is prevented from flowing out of the inner hole 15 of the planet carrier, the second oil duct guides the oil into the thrust ball bearing 4 for lubrication, the second bowl-shaped plug piece 16 seals the inner hole of the sun wheel, and the oil flowing out of the second oil duct 102 is prevented from flowing into the inner hole of the sun wheel. Due to the sealing of the bowl-shaped plug piece I15 and the bowl-shaped plug piece II 16, one part of oil in the oil passage II 102 flows into the thrust ball bearing 4, and the other part flows into the planet shaft oil passage 11 and is led into the needle bearing 5 through the planet shaft oil passage 11.
An axial oil passage III 103 is formed between the thrust ball bearing 4 and the planet carrier 1, and the oil passage III 103 guides the oil flowing through the thrust ball bearing 4 to the gear of the planet wheel 2. The oil flows through the thrust ball bearing 4 to enter the oil duct III 103 and flows onto the gear of the planet wheel 2, lubricates the planet wheel 2, reduces abrasion of the planet wheel 2, the sun wheel matched with the planet wheel and the gear ring, and the oil flowing onto the gear of the planet wheel 2 falls back into the speed reducer shell 8 under the action of gravity along with the rotation of the planet wheel 2.
The planetary shaft oil duct 11 comprises an oil duct IV 104 communicated with an oil duct III 103 and axially arranged along the planetary shaft 3, and an oil duct V105 communicated with the oil duct IV 104 and used for guiding oil into the needle bearing 5, wherein the oil duct V105 is radially arranged along the planetary shaft 6. The oil flowing from the oil duct II 102 to the planetary shaft oil duct 11 enters the oil duct IV 104, flows to the needle bearing 5 through the oil duct V105 to lubricate the oil, and the oil flowing through the needle bearing 5 is guided to the gear of the planetary gear through the oil passing hole 12 of the gasket 7 to lubricate the planetary gear and falls back to the reducer shell 8 under the action of gravity along with the turning of the planetary gear 2.
The lubrication path of the above mixed motion planet row lubrication structure is:
The planet carrier 1 drives the gear pump 13 to rotate along with the driving of the engine, oil at the bottom of the speed reducer shell 8 enters the upper oil suction channel 9 and is pumped into the oil duct I101, the oil flows into the oil duct II 102 through the oil duct I101, part of the oil in the oil duct II 102 flows into the thrust ball bearing 4, flows onto a gear of the planet wheel through the oil duct III 103 and falls back into the speed reducer shell 8 along with the rotation of the gear, the other part of the oil in the oil duct II 102 flows into the oil duct IV 104 and flows into the needle bearing 5 through the oil duct V105, flows onto a gear of the planet wheel through the oil passing hole 12 on the gasket 7, and falls back into the speed reducer shell 8 along with the rotation of the gear to form circulation lubrication on a planet row.
The foregoing disclosure of embodiments of the present utility model has been fully described with reference to the accompanying drawings, in which it is to be understood that the embodiments described are merely some of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (5)
1. The mixed planet row lubricating structure comprises a planet carrier, a planet wheel, a sun wheel, an inner ring and a gear ring, wherein one end of the planet carrier extends out of a speed reducer shell and is connected with an engine, the planet wheel is assembled on the planet carrier, the sun wheel is meshed with the planet wheel, the inner end of the planet carrier is supported on the inner end of the sun wheel through a thrust ball bearing, the planet wheel is assembled on a planet shaft on the planet carrier through a needle bearing, and a gasket is arranged between the planet carrier and the end face of the planet wheel.
2. The lubrication structure of the hybrid planet row according to claim 1, wherein a strainer for filtering oil is installed at the lower end of the upper oil suction duct, the upper end of the upper oil suction duct is an annular oil duct arranged at the periphery of the planet carrier, and the gear pump is assembled in the annular oil duct.
3. The lubricating structure of the hybrid planet row according to claim 1, wherein the planet carrier oil duct comprises a first oil duct which is communicated with the upper end of the upper oil suction duct and the inner hole of the planet carrier and is in a cross shape, a second oil duct which is arranged on the periphery of the inner hole of the planet carrier and is communicated with the first oil duct, a bowl-shaped plug piece I is assembled on the end face of the inner hole of the planet carrier in a sealing manner, a bowl-shaped plug piece II is assembled on the end face of the inner hole of the sun wheel in a sealing manner, the bowl-shaped plug piece I and the bowl-shaped plug piece II are arranged in a two-to-two manner, the second oil duct is communicated with the oil duct of the planet shaft, and oil is led into the thrust ball bearing.
4. The lubricating structure of the hybrid planet row according to claim 3, wherein an axial oil passage III is formed between the thrust ball bearing and the planet carrier, and the oil passage III guides oil flowing through the thrust ball bearing to the planet gear.
5. The lubricating structure of the hybrid planet row of claim 3, wherein the planet shaft oil passage comprises an oil passage IV which is communicated with the oil passage III and is axially arranged along the planet shaft, and an oil passage V which is communicated with the oil passage IV and guides oil into the needle bearing, and the oil passage V is radially arranged along the planet shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520257741.1U CN223609268U (en) | 2025-02-18 | 2025-02-18 | Mixed-motion planetary gear lubrication structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520257741.1U CN223609268U (en) | 2025-02-18 | 2025-02-18 | Mixed-motion planetary gear lubrication structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223609268U true CN223609268U (en) | 2025-11-28 |
Family
ID=97782214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520257741.1U Active CN223609268U (en) | 2025-02-18 | 2025-02-18 | Mixed-motion planetary gear lubrication structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223609268U (en) |
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2025
- 2025-02-18 CN CN202520257741.1U patent/CN223609268U/en active Active
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