CN215763089U - Dual-drive planetary gear mechanism - Google Patents
Dual-drive planetary gear mechanism Download PDFInfo
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- CN215763089U CN215763089U CN202121746646.6U CN202121746646U CN215763089U CN 215763089 U CN215763089 U CN 215763089U CN 202121746646 U CN202121746646 U CN 202121746646U CN 215763089 U CN215763089 U CN 215763089U
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Abstract
The utility model provides a dual-drive planetary gear mechanism which comprises a planetary carrier, a central sun gear and a plurality of planetary small gears, wherein the central sun gear is sleeved on the planetary carrier, the planetary small gears are meshed with the central sun gear, one end of the planetary carrier is a first power input end, the central sun gear is a second power input end, and a planetary gear ring gear is arranged at the other end of the planetary carrier and serves as a power output end. The dual-drive planetary gear mechanism solves the problem that the existing dual-drive input structure is complex, improves the space utilization, saves the cost, and effectively solves the problems of switching between input power and simultaneous dual input.
Description
Technical Field
The utility model relates to a planetary wheel mechanism, in particular to a dual-drive planetary wheel mechanism.
Background
In some special application scenarios, a double-power input and single-output condition is required. If some important equipment is used for ensuring the operation stability, the motor is used for driving under the normal condition, and the engine is used for driving when the power can not be supplied. For example, a hybrid vehicle is driven by a motor at a low speed and by an engine at a medium-high speed or without power.
With the progress of development, diversification of energy application and further pursuit of operational reliability of equipment are pursued. Double or multiple power inputs are increasing. However, the multi-power input conversion used in the existing market has the defects of complex structure, huge mechanism, inconvenient conversion between input powers and the like. Finding a structure which is compact, free in input power switching, single-input and double-input simultaneously becomes a current critical task.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of complex structure, large mechanism, inconvenient conversion between input powers and the like in the prior art and provide a double-drive planetary wheel mechanism.
The utility model solves the technical problems through the following technical scheme:
a dual-drive planetary gear mechanism is characterized by comprising a planetary carrier, wherein one end of the planetary carrier is a first power input end, a central sun gear is sleeved on the planetary carrier, and the central sun gear is a second power input end; the central shaft of the double-drive planetary gear mechanism is superposed with the central axis of the planet carrier or the central axis of the central sun gear; the other end of the planet carrier is provided with a planet pinion carrier which is expanded outwards by taking the central shaft as a center, the end surface of the planet pinion carrier, which points to the first power input end, is provided with at least two uniformly distributed round holes, short shafts are respectively arranged in the round holes to fix a planet pinion, and each planet pinion is meshed with the external gear teeth of the central sun gear; the outer peripheral surface of the planet pinion carrier is provided with a planet carrier bearing, and a planet gear ring is fixed on the planet carrier through the planet carrier bearing; the planet carrier bearing points to one side of the first power input end is abutted against the central sun wheel, the planet carrier bearing deviates from one side of the first power input end is abutted against the planet gear ring gear, and the planet gear ring gear is a power output end.
Preferably, the planet small wheel pressing plate is connected with the short shaft and abuts against the end face of the planet small wheel.
Preferably, the number of the small planet wheels is four, and the small planet wheels are uniformly distributed.
In the present invention, the above-mentioned preferred conditions can be arbitrarily combined on the basis of common knowledge in the field, so as to obtain each preferred embodiment of the present invention.
The positive progress effects of the utility model are as follows: the dual-drive planetary gear mechanism solves the problem that the existing dual-drive input structure is complex, improves the space utilization, saves the cost, and effectively solves the problems of switching between input power and simultaneous dual input.
Drawings
Fig. 1 is a schematic structural diagram of a medium-double drive planetary gear mechanism according to an embodiment of the present invention.
FIG. 2 is a front view of the dual drive planetary gear mechanism of FIG. 1.
Fig. 3 is a schematic structural view taken along a sectional line a-a in fig. 2.
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
As shown in fig. 1 to 3, the dual-drive planetary gear mechanism in this embodiment includes a planetary carrier 2, and a central axis of the planetary carrier 2 coincides with a central axis of the dual-drive planetary gear mechanism. One end of the planet carrier 2 is a first power input end (left end in the figure), a central sun gear 1 is sleeved on the planet carrier, and the central sun gear 1 is a second power input end; the other end (the right end in the drawing) of the planet carrier is provided with a planet small wheel carrier 21 which is expanded outwards by taking the central shaft as the center, the end surface of the planet small wheel carrier 21, which points to the first power input end, is provided with four uniformly distributed round holes, a short shaft 6 is arranged in each round hole to fixedly provide a planet small wheel 5, and external teeth of each planet small wheel are all meshed with external teeth of the central sun wheel. The outer peripheral surface of the planet pinion carrier 21 is provided with a planet carrier bearing 4, and the planet gear ring gear 3 is fixed on the planet carrier 2 through the planet carrier bearing 4. The planet carrier bearing 4 points to one side of the first power input end and the central sun gear 1 are abutted, the planet carrier bearing 4 deviates from one side of the first power input end and the planet gear ring gear 3 are abutted, and the planet gear ring gear 3 is a power output end.
A planet pinion pressure plate 22 is further arranged on the planet carrier 2, and the planet pinion pressure plate 22 is connected with the short shaft 6 and abuts against the end face of the planet pinion 5.
The operating principle of the double-drive planetary gear mechanism will be explained below with reference to different power input situations.
When the planet carrier 2 (first power input end) has power input and the central sun gear 1 (second power input end) has no power input, the assumption is that the power makes the planet carrier 2 rotate clockwise, the small planet gear 5 fixed on the planet carrier rotate anticlockwise, the planet gear ring 3 on the outermost side rotates clockwise, the power is output through the right side of the planet gear ring 3, the central sun gear 1 also rotates clockwise at the moment, and the rotation rate is related to the gear transmission ratio.
When power is input at the second power input end and power is not input at the first power input end, the central sun gear 1 is supposed to rotate clockwise under the assumption that power enables the small planet gear 5 meshed with the central sun gear through the gear to rotate anticlockwise, the planet gear ring gear 3 at the outermost side rotates clockwise, power is output through the right side of the planet gear ring gear 3, at the moment, the planet carrier 2 also rotates clockwise, and the rotation rate is related to the gear transmission ratio.
When power is input into the first power input end and the second power input end, the power directions are clockwise, and when the rotating speed of the planet carrier 2 is greater than that of the central sun gear 1, the planet small wheel 5 rotates clockwise; when the rotational speed of the carrier 2 is less than that of the central sun gear 1, the pinion 5 rotates counterclockwise. In both cases, the planetary gear ring 3 rotates clockwise and outputs power through the right side, and the rotation speed is related to the two rotation speeds of the transmission ratio.
The dual-drive planetary gear mechanism in the embodiment can change the transmission ratio of gear transmission through the transmission power of gears with different tooth numbers, and can meet the requirement on power change in different scenes through the matching of various tooth numbers. The dual-drive planetary gear mechanism solves the problem that the existing dual-drive input structure is complex, the space utilization is improved, the cost is saved, and the problems of switching between input power and simultaneous dual input are effectively solved.
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (3)
1. A dual-drive planetary gear mechanism is characterized by comprising a planetary carrier, wherein one end of the planetary carrier is a first power input end, a central sun gear is sleeved on the planetary carrier, and the central sun gear is a second power input end; the central shaft of the double-drive planetary gear mechanism is superposed with the central axis of the planet carrier or the central axis of the central sun gear; the other end of the planet carrier is provided with a planet pinion carrier which is expanded outwards by taking the central shaft as a center, the end surface of the planet pinion carrier, which points to the first power input end, is provided with at least two uniformly distributed round holes, short shafts are respectively arranged in the round holes to fix a planet pinion, and each planet pinion is meshed with the external gear teeth of the central sun gear; the outer peripheral surface of the planet pinion carrier is provided with a planet carrier bearing, and a planet gear ring is fixed on the planet carrier through the planet carrier bearing; the planet carrier bearing points to one side of the first power input end is abutted against the central sun wheel, the planet carrier bearing deviates from one side of the first power input end is abutted against the planet gear ring gear, and the planet gear ring gear is a power output end.
2. The dual-drive planetary gear mechanism according to claim 1, characterized by comprising a planetary pinion pressure plate, wherein the planetary pinion pressure plate is connected with the stub shaft and abuts against the end face of the planetary pinion.
3. The dual-drive planetary gear mechanism according to claim 2, wherein the number of the planetary pinions is four, and the planetary pinions are uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121746646.6U CN215763089U (en) | 2021-07-29 | 2021-07-29 | Dual-drive planetary gear mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121746646.6U CN215763089U (en) | 2021-07-29 | 2021-07-29 | Dual-drive planetary gear mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215763089U true CN215763089U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121746646.6U Active CN215763089U (en) | 2021-07-29 | 2021-07-29 | Dual-drive planetary gear mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215763089U (en) |
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2021
- 2021-07-29 CN CN202121746646.6U patent/CN215763089U/en active Active
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