CN218480113U - Planetary gear speed reducer - Google Patents
Planetary gear speed reducer Download PDFInfo
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- CN218480113U CN218480113U CN202222701641.2U CN202222701641U CN218480113U CN 218480113 U CN218480113 U CN 218480113U CN 202222701641 U CN202222701641 U CN 202222701641U CN 218480113 U CN218480113 U CN 218480113U
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- planetary gear
- gear set
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Abstract
The utility model relates to a planetary gear speed reducer, including the planet shell, first order planetary gear set, second level planetary gear set, first order planet carrier and second level planet carrier, be provided with the ring gear that all corresponds with first order planetary gear set and second level planetary gear set on the inner wall of planet shell, first order planetary gear set and second level planetary gear set all can rotate on the ring gear, first order planetary gear set's middle part rotatable coupling power input shaft, first order planet carrier is connected to first order planetary gear set, second level planetary gear set connects the second level planet carrier, set up power output shaft on the second level planet carrier, power output shaft extends to the planet shell outside from a port of planet shell. Compare two-stage planetary gear speed reducer among the prior art, the utility model discloses a planetary gear speed reducer has less part number and simpler mounting means, and the equipment is simple and convenient for packaging efficiency is higher, and the maintenance cost is low.
Description
Technical Field
The utility model belongs to the technical field of the planetary gear technique and specifically relates to a planetary gear speed reducer.
Background
The two-stage speed reduction structure of the existing planetary gear speed reducer is too complex, has more parts, is easy to cause assembly difficulty, low in assembly efficiency and part loss in the maintenance process.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a planetary gear reducer that solves at least one of the problems described above.
The utility model provides a planetary gear reducer, includes planetary housing, first order planetary gear set, second level planetary gear set, first order planet carrier and second level planet carrier, be provided with on the inner wall of planetary housing with the ring gear that first order planetary gear set and second level planetary gear set all correspond, first order planetary gear set and second level planetary gear set all can rotate on the ring gear, first order planetary gear set's middle part rotatable coupling power input shaft, first order planetary gear set connects the first order planet carrier, first order planetary gear set passes through first order planet carrier drives second level planetary gear set is in rotate on the ring gear, second level planetary gear set connects the second level planet carrier, set up power output shaft on the second level planet carrier, power output shaft follows a port of planetary housing extends to the planetary housing outside, second level planetary gear set is through driving the second level planet carrier rotates, and then the drive power output shaft rotates.
Furthermore, the first-stage planetary gear set comprises a plurality of first gears of a circular array, the first gears are connected with the power input shaft at the positions where circle centers are formed in a surrounding mode, the power input shaft is meshed with the first gears, the first gears are meshed with the inner gear ring, the power input shaft drives the first gears to synchronously rotate through rotation, and therefore the first gears roll on the inner gear ring.
Furthermore, the other port of the planetary shell is provided with a planetary fixing frame for limiting the shaking of the first-stage planetary gear set;
the power input shaft penetrates through the planetary fixing frame from the middle of the planetary fixing frame and extends to the middle of the first-stage planetary gear set.
Furthermore, the planet fixing frame is a rotary motor shell, and the power input shaft is a rotary motor output shaft.
Furthermore, correspond on the first order planet carrier first gear is provided with a plurality of first planet fixed columns, first planet fixed column rotatable coupling the centre of a circle of first gear, the first order planet carrier deviates from one side of first order planetary gear set corresponds first order planetary gear set's middle part sets up the planet carrier transmission shaft, planet carrier transmission shaft rotatable coupling second order planetary gear set's middle part.
Furthermore, second level planetary gear set includes the second gear of a plurality of circular arrays, and is a plurality of the second gear encloses the centre of a circle department of establishing formation and connects the planet carrier transmission shaft, the meshing of planet carrier transmission shaft the second gear, the second gear with the ring gear meshing, the planet carrier transmission shaft drives a plurality ofly through rotating the synchronous rotation of second gear, so that a plurality of the second gear in roll on the ring gear.
Furthermore, a plurality of second planet fixing columns are arranged on the second-stage planet carrier corresponding to the second gear, the second planet fixing columns are rotatably connected with the circle center of the second gear, the power output shaft is arranged on one side, away from the second-stage planetary gear set, of the second-stage planet carrier, and the power output shaft corresponds to the middle of the second-stage planetary gear set.
Further, the first gear is provided with three groups.
Furthermore, the first-stage planet carrier is triangular, three groups of first planet fixing columns are arranged, and the three groups of first planet fixing columns are respectively arranged at three corners of the first-stage planet carrier.
Furthermore, the second gear is provided with three groups, and the second-stage planet carrier is circular.
Through setting up two sets of planetary gear set, first order planetary gear set connects the power input shaft, and the power input shaft drives first order planetary gear set and rotates on the inner ring gear, further drives first order planet carrier and rotates to drive second level planetary gear set through first order planet carrier and rotate on the inner ring gear, further drive second level planet carrier and rotate, realize the rotation of power output shaft on the second level planet carrier, accomplish the two-stage speed reduction.
Compare two-stage planetary gear speed reducer among the prior art, the utility model discloses a planetary gear speed reducer has less part number and simpler mounting means, and the equipment is simple and convenient for packaging efficiency is higher, and the maintenance cost is low.
Drawings
Fig. 1 is a schematic structural diagram of a planetary gear reducer according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of a planetary gear reducer according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of a first stage planetary gear set, a first stage planet carrier, and a planet carrier drive shaft according to an embodiment of the present invention;
fig. 4 is another exploded schematic view of the first stage planetary gear set, the first stage planet carrier, and the planet carrier drive shaft of an embodiment of the present invention;
fig. 5 is an exploded schematic view of a second stage planetary gear set, a second stage planet carrier and a power output shaft of an embodiment of the present invention;
fig. 6 is another exploded schematic view of a second stage planetary gear set, a second stage planet carrier, and a power take-off shaft in accordance with an embodiment of the present invention.
Reference numerals:
100. a planetary housing; 110. an inner gear ring;
200. a second stage planetary gear set; 210. a second gear;
300. a first stage planetary gear set; 310. a first gear;
400. a second stage planet carrier; 410. a second planet fixing column;
500. a first stage planet carrier; 510. a first planet fixing post;
600. a planet carrier transmission shaft;
700. a power take-off shaft;
800. a planet fixing frame;
900. and (7) a gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the planetary gear reducer of the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "central," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Please refer to fig. 1-2, a planetary gear reducer according to an embodiment of the present invention includes a planetary housing 100, a first-stage planetary gear set 300, a second-stage planetary gear set 200, a first-stage planetary gear set 500, and a second-stage planetary gear set 400, wherein an inner wall of the planetary housing 100 is provided with an inner gear ring 110 corresponding to the first-stage planetary gear set 300 and the second-stage planetary gear set 200, the first-stage planetary gear set 300 and the second-stage planetary gear set 200 can both rotate on the inner gear ring 110, a power input shaft is rotatably connected to a middle portion of the first-stage planetary gear set 300, the first-stage planetary gear set 300 is connected to the first-stage planetary gear set 500, the first-stage planetary gear set 300 drives the second-stage planetary gear set 200 to rotate on the inner gear ring 110 through the first-stage planetary gear set 500, the second-stage planetary gear set 200 is connected to the second-stage planetary gear set 400, a power output shaft 700 is provided on the second-stage planetary gear set 400, the power output shaft 700 extends from a port of the planetary housing 100 to an outer side of the planetary gear set 200, and drives the second-stage planetary gear set 400 to rotate, thereby driving the power output shaft 700 to rotate.
In this embodiment, by providing two sets of planetary gear sets, the first planetary gear set 300 is connected to the power input shaft, and the power input shaft drives the first planetary gear set 300 to rotate on the internal gear ring 110, further drives the first planet carrier 500 to rotate, and drives the second planetary gear set 200 to rotate on the internal gear ring 110 through the first planet carrier 500, further drives the second planet carrier 400 to rotate, so as to realize the rotation of the power output shaft 700 on the second planet carrier 400, and complete the two-stage speed reduction.
Compare two-stage planetary gear speed reducer among the prior art, the utility model discloses a planetary gear speed reducer has less part number and simpler mounting means, and the equipment is simple and convenient for packaging efficiency is higher, and the maintenance cost is low.
Specifically, the power take-off shaft 700 is rotatably coupled to the planetary housing 100 port via a bearing.
Referring to fig. 1-4, in an embodiment, the first-stage planetary gear set 300 includes a plurality of first gears 310 in a circular array, a circle center formed by the first gears 310 is connected to the power input shaft, the power input shaft is engaged with the first gears 310, the first gears 310 are engaged with the ring gear 110, and the power input shaft rotates to drive the first gears 310 to rotate synchronously, so that the first gears 310 rotate on the ring gear 110.
In this embodiment, as the power input shaft rotates, the first gear 310 engaged with the power input shaft rotates synchronously, and since the first gear 310 is also engaged with the ring gear 110, the first gear 310 rolls on the ring gear 110 along the ring gear 110 during the rotation of the first gear 310, thereby driving the first-stage planet carrier 500 to rotate.
Referring to fig. 1-2, in an embodiment, a planetary fixing frame 800 is disposed at another port of the planetary housing 100;
the power input shaft penetrates the planetary holder 800 from the middle of the planetary holder 800 and extends to the middle of the first-stage planetary gear set 300.
In this embodiment, the planetary holder 800 is provided, so that the first stage planetary gear set 300, the first stage planetary gear set 500 and the second stage planetary gear set 200 do not fall off when being rotated, after shaking too severely or being used for too long time.
Specifically, the planet holder 800 is fixedly connected to the planet housing 100 by bolts.
Further, a gasket 900 is disposed on one side of the planetary holder 800 close to the first-stage planetary gear set 300, and the gasket 900 is connected to the planetary holder 800 through a bolt.
In this embodiment, since the first-stage planetary gear set 300 is disposed at the end of the planetary housing 100 and has some redundant space from the end in many cases, the installation space of the planetary holder 800 is provided, and the redundant space is not easily controlled in size, when the redundant space is large, the redundant space is filled by disposing the spacer 900, so that the distance between the planetary holder 800 and the first-stage planetary gear set 300 is not too large, and the first-stage planetary gear set 300, the first-stage planetary gear set 500, and the second-stage planetary gear set 200 do not fall off from the end of the planetary housing 100 when they rotate, after shaking too severely or using too long.
In one embodiment, the planetary fixing frame 800 is a casing of a rotating electrical machine, and the power input shaft is an output shaft of the rotating electrical machine.
In this embodiment, the planetary fixing frame 800 is directly acted by the rotating electrical machine front cover casing, the part of the existing planetary fixing frame 800 is eliminated, the number of parts is less, the cost is lower, the rotating electrical machine output shaft can be directly aligned to the middle part of the first-stage planetary gear set 300 during installation, the rotating electrical machine is pushed to be close to the planetary housing 100, after the end part of the planetary housing 100 is abutted to the rotating electrical machine casing, the end part of the rotating electrical machine output shaft at the moment is just positioned in the middle part of the first-stage planetary gear set 300 and is meshed with the first gear 310, then, bolt holes in the rotating electrical machine casing are aligned to bolt holes in the planetary housing 100, and fixed installation is carried out.
Referring to fig. 3 to 4, in an embodiment, a plurality of first planetary fixing posts 510 are disposed on the first stage planetary carrier 500 corresponding to the first gear 310, the first planetary fixing posts 510 are rotatably connected to a center of the first gear 310, a planetary carrier transmission shaft 600 is disposed on a side of the first stage planetary carrier 500 away from the first stage planetary gear set 300 corresponding to a middle portion of the first stage planetary gear set 300, and the planetary carrier transmission shaft 600 is rotatably connected to a middle portion of the second stage planetary gear set 200.
In this embodiment, the first planetary fixing post 510 is used to connect the first gear 310 and the first stage planetary carrier 500, the first planetary fixing post 510 is fixedly connected to the first planetary fixing frame 800, and the first planetary fixing post 510 is rotatably connected to the center of the first gear 310, when the first gear 310 rolls on the ring gear 110, the first stage planetary carrier 500 will synchronously rotate, and the planetary carrier transmission shaft 600 thereon will synchronously rotate, so as to drive the second stage planetary gear set 200 to operate (here, the same as the operation matching between the power input shaft and the first stage planetary gear set 300).
Referring to fig. 1-2 and 5-6, in an embodiment, the second-stage planetary gear set 200 includes a plurality of second gears 210 in a circular array, a circle center formed by the second gears 210 is connected to the planet carrier transmission shaft 600, the planet carrier transmission shaft 600 engages with the second gears 210, the second gears 210 engage with the ring gear 110, and the planet carrier transmission shaft 600 drives the second gears 210 to synchronously rotate through rotation, so that the second gears 210 roll on the ring gear 110.
The principle of the present embodiment is the same as that of the power input shaft and the first gear 310 acting in cooperation.
In this embodiment, the rotation of the planet carrier transmission shaft 600 drives the second gear 210 to rotate, and the second gear 210 rolls on the ring gear 110 and drives the second-stage planet carrier 400 to rotate.
Referring to fig. 5 to 6, in an embodiment, a plurality of second planet fixing posts 410 are disposed on the second stage planet carrier 400 corresponding to the second gear 210, the second planet fixing posts 410 are rotatably connected to a circle center of the second gear 210, the power output shaft 700 is disposed on a side of the second stage planet carrier 400 departing from the second stage planetary gear set 200, and the power output shaft 700 corresponds to a middle portion of the second stage planetary gear set 200.
The principle of the present embodiment is the same as the connection relationship between the first stage carrier 500 and the first gear 310.
In this embodiment, the second stage planet carrier 400 is driven by the second stage planetary gear set 200 to rotate, and drives the power output shaft 700 to rotate synchronously.
It will be appreciated that the power take-off shaft 700, the middle of the first stage planetary gear set 300, the planet carrier drive shaft 600, the middle of the second stage planetary gear set 200 and the power take-off shaft are all co-axial.
In one embodiment, the first gear 310 is provided with three sets.
In the present embodiment, three sets of the first gears 310 are selected as the first-stage planetary gear set 300 in consideration of the stability of the triangle and the reduction of the number of parts as much as possible.
In an embodiment, the first stage planet carrier is triangular, three sets of the first planet fixing columns 510 are provided, and the three sets of the first planet fixing columns 510 are respectively provided at three corners of the first stage planet carrier.
In the present embodiment, in order to further reduce the material cost and ensure the stability, the first-stage planetary carrier is configured to be triangular, and three corners of the first-stage planetary carrier are respectively used to connect three sets of first gears 310.
In one embodiment, the second gear 210 has three sets, and the second stage planet carrier has a circular shape.
In the present embodiment, three sets of the second gears 210 are selected as the second-stage planetary gear set 200 in consideration of the stability of the triangle and the reduction of the number of parts as much as possible.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.
Claims (10)
1. A planetary gear reducer characterized in that: including planet shell, first order planetary gear set, second level planetary gear set, first order planet carrier and second level planet carrier, be provided with on the inner wall of planet shell with the ring gear that first order planetary gear set and second level planetary gear set all correspond, first order planetary gear set and second level planetary gear set all can rotate on the ring gear, first order planetary gear set's middle part rotatable coupling power input shaft, first order planetary gear set connects the first order planet carrier, first order planetary gear set passes through first order planet carrier drives second level planetary gear set is in rotate on the ring gear, second level planetary gear set connects the second level planet carrier, set up power output shaft on the second level planet carrier, power output shaft follows a port of planet shell extends to the planet shell outside, second level planetary gear set is through driving the second level planet carrier rotates, and then the drive power output shaft rotates.
2. The planetary gear reducer according to claim 1, wherein:
first order planetary gear set includes the first gear of a plurality of circular arrays, and is a plurality of the first gear encloses the centre of a circle department of establishing formation and connects the power input shaft, the power input shaft meshing first gear, first gear with the ring gear meshing, the power input shaft drives a plurality ofly through rotating first gear synchronous rotation, so that a plurality of first gear in roll on the ring gear.
3. The planetary gear reducer according to claim 1, characterized in that:
the other port of the planetary shell is provided with a planetary fixing frame for limiting the first-stage planetary gear set to shake;
the power input shaft penetrates through the planet fixing frame from the middle of the planet fixing frame and extends to the middle of the first-stage planetary gear set.
4. A planetary gear reducer as claimed in claim 3, wherein:
the planet fixing frame is a rotary motor shell, and the power input shaft is a rotary motor output shaft.
5. The planetary gear reducer according to claim 2, wherein:
correspond on the first order planet carrier first gear is provided with a plurality of first planet fixed columns, first planet fixed column rotatable coupling the centre of a circle of first gear, the first order planet carrier deviates from one side correspondence of first order planetary gear set's middle part sets up the planet carrier transmission shaft, planet carrier transmission shaft rotatable coupling second order planetary gear set's middle part.
6. The planetary gear reducer according to claim 5, wherein:
second level planetary gear set includes the second gear of a plurality of circular arrays, and is a plurality of the second gear encloses the centre of a circle department of establishing formation and connects the planet carrier transmission shaft, the meshing of planet carrier transmission shaft the second gear, the second gear with the ring gear meshing, the planet carrier transmission shaft drives a plurality ofly through rotating the synchronous rotation of second gear, so that a plurality of the second gear in the ring gear rolls.
7. The planetary gear reducer according to claim 6, wherein:
the second-stage planet carrier is provided with a plurality of second planet fixing columns corresponding to the second gear, the second planet fixing columns are rotatably connected with the circle center of the second gear, the power output shaft is arranged on one side, away from the second-stage planetary gear set, of the second-stage planet carrier, and the power output shaft corresponds to the middle of the second-stage planetary gear set.
8. The planetary gear reducer according to claim 5, wherein:
the first gear is provided with three groups.
9. The planetary gear reducer according to claim 8, wherein:
the first-stage planet carrier is triangular, three groups of first planet fixing columns are arranged, and the three groups of first planet fixing columns are arranged on three corners of the first-stage planet carrier respectively.
10. The planetary gear reducer according to claim 6, wherein: the second gear is provided with three groups, and the second-stage planet carrier is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222701641.2U CN218480113U (en) | 2022-10-13 | 2022-10-13 | Planetary gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222701641.2U CN218480113U (en) | 2022-10-13 | 2022-10-13 | Planetary gear speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218480113U true CN218480113U (en) | 2023-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222701641.2U Active CN218480113U (en) | 2022-10-13 | 2022-10-13 | Planetary gear speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218480113U (en) |
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2022
- 2022-10-13 CN CN202222701641.2U patent/CN218480113U/en active Active
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