CN210715764U - Planetary gear transmission mechanism for speed reducer - Google Patents
Planetary gear transmission mechanism for speed reducer Download PDFInfo
- Publication number
- CN210715764U CN210715764U CN201921189599.2U CN201921189599U CN210715764U CN 210715764 U CN210715764 U CN 210715764U CN 201921189599 U CN201921189599 U CN 201921189599U CN 210715764 U CN210715764 U CN 210715764U
- Authority
- CN
- China
- Prior art keywords
- planet
- gear
- sun gear
- central shaft
- rotatably connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Retarders (AREA)
Abstract
The utility model discloses a planetary gear drive for speed reducer, including first sun gear and first planet wheel, the outside meshing of first sun gear is rotated and is connected with two first planet wheels, and the outside meshing of two first planet wheels is connected with the second ring gear, the central point of putting of first sun gear department inlays and is equipped with the center pin. The utility model discloses in, rotate through the first planet wheel of first sun gear transmission, because the diameter of first planet wheel is less than first sun gear, the linear velocity of first sun gear equals with the linear velocity of first planet wheel, thereby make first planet wheel angular velocity be less than first sun gear when rotating, thereby carry out the one-level speed reduction to the planet wheel, through the same principle with first-level planet wheel, and then the speed reduction of second level, thereby expand the one-level speed reduction originally into the two-stage, carry out certain degree dispersion with the torsional force, thereby reduce the size of the atress of planet wheel at different levels and sun gear, and then reduce the possibility that the gear damaged.
Description
Technical Field
The utility model relates to the technical field of gears, especially, relate to a planetary gear drive mechanism for speed reducer.
Background
Planetary gears are gear systems whose axes of rotation, in addition to being able to rotate about their own axis of rotation like a fixed axis gear, also rotate with the planet carrier about the axes of the other gears. Rotation about its own axis is called "rotation", and rotation about the other gear axis is called "revolution", just like a planet in the solar system, and hence its name.
However, the existing planet wheel still has defects in the using process; most of the existing planet wheels only carry out primary speed reduction when carrying out transmission, so that the torque force between the clamping teeth between the central wheel and the driven wheel is overlarge, and the planet wheels are easily damaged; and the structure is mostly fixed between the planet wheel of current, when the follow driving wheel that needs to carry out different latch figures is changed, comparatively inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a planetary gear transmission mechanism for a speed reducer.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a planetary gear transmission mechanism for a speed reducer comprises a first sun gear and a first planet gear, wherein the outer side of the first sun gear is meshed with the two first planet gears in a rotating way, and the outer sides of the two first planet gears are engaged and connected with a second gear ring, the central position of the first sun gear is embedded with a central shaft, and the central shaft is rotationally connected with a first planet carrier, and the horizontal two ends of the first planet carrier are respectively connected with the pin shafts of the two first planet wheels in a rotating way, the bottom of the first planet wheel is connected with the first planet carrier in a rotating way, and the central position of the first planet carrier is rotationally connected with a second sun gear through a central shaft, the outer side of the second sun gear is engaged and rotationally connected with two second planet gears, and the outer sides of the two second planet wheels are meshed with a first gear ring, and the tops of the two second planet wheels are rotatably connected with the central shaft at the top of the second sun wheel through a second planet carrier.
As a further description of the above technical solution:
the bottom of the second planet wheel is connected with a second planet carrier through a pin shaft in a rotating mode, and the bottom of the second planet carrier is connected with an output shaft in a transmission mode.
As a further description of the above technical solution:
the central position of the bottom in the first planet carrier is in transmission connection with the central shaft through a pin shaft, a lantern ring is sleeved outside the central shaft, and the bottom of the lantern ring is elastically connected with the central shaft through an extrusion spring.
As a further description of the above technical solution:
the top of center pin rotates and is connected with a plurality of kellies, and a plurality of kellies all around center pin annular array, a plurality of kellies all rotate with the center pin through the torsional spring pivot and are connected.
As a further description of the above technical solution:
the diameters of the first planet wheel and the second planet wheel are respectively smaller than the diameters of the first sun wheel and the second sun wheel.
As a further description of the above technical solution:
the diameter of the second planet wheel is larger than that of the first planet wheel.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses in, drive arrangement drives first sun gear through the center pin, thereby make first sun gear transmission first planet wheel rotate, because the diameter of first planet wheel is less than first sun gear, when the meshing transmission, the linear velocity of first sun gear equals with the linear velocity of first planet wheel, thereby make first planet wheel angular velocity be less than first sun gear when rotating, thereby carry out the one-level speed reduction to the planet wheel, through the same principle with first-level planet wheel, and then the speed reduction of second level, thereby expand into the two-stage with the one-level speed reduction of original, carry out certain degree dispersion with the torsional force, thereby reduce the size of the atress of planet wheel at different levels and sun gear, and then reduce the possibility that the gear damaged.
The utility model discloses in, drag downwards through dragging the lantern ring, when moving to a certain extent, the lantern ring loses the restriction to the kelly, under the effect of torsional spring pivot, the kelly loses the joint effect to the round pin axle of welding on first planet carrier, thereby make second level reduction gears can take off, when carrying out the reduction planet wheel change of new one-level, arrive appointed position back at the center pin, loosen the lantern ring, because the effect of extrusion spring, make the lantern ring push away the kelly to the inboard, thereby make the kelly joint at the round pin epaxially, accomplish the fixed connection to new one-level planet wheel with this, and is convenient and fast.
Drawings
Fig. 1 is a top view of a planetary gear transmission mechanism for a speed reducer according to the present invention;
fig. 2 is a sectional view of a planetary gear transmission mechanism for a speed reducer according to the present invention;
fig. 3 is a B-B sectional view of a planetary gear transmission mechanism for a speed reducer according to the present invention;
fig. 4 is a central axis connection structure diagram of a planetary gear transmission mechanism for a speed reducer according to the present invention.
Illustration of the drawings:
1. a first ring gear; 2. a second ring gear; 3. a first sun gear; 4. a central shaft; 5. a first carrier; 6. a first planet gear; 7. a second planet wheel; 8. a second planet carrier; 9. a collar; 10. a second sun gear; 11. a compression spring; 12. a torsion spring shaft; 13. and (5) clamping the rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the utility model provides a technical scheme: a planetary gear transmission mechanism for a speed reducer comprises a first sun gear 3 and first planet gears 6, wherein the outer side of the first sun gear 3 is meshed and rotatably connected with two first planet gears 6, the outer sides of the two first planet gears 6 are meshed and connected with a second gear ring 2, a central shaft 4 is embedded in the central position of the first sun gear 3, a first planet carrier 5 is rotatably connected onto the central shaft 4, the two horizontal ends of the first planet carrier 5 are respectively rotatably connected with pin shafts of the two first planet gears 6, the bottom of the first planet gears 6 is rotatably connected with the first planet carrier 5, the central position of the first planet carrier 5 is rotatably connected with a second sun gear 10 through the central shaft 4, the outer side of the second sun gear 10 is meshed and rotatably connected with two second planet gears 7, the outer sides of the two second planet gears 7 are meshed and connected with a first gear ring 1, the diameter of the first gear ring 1 is larger than that of the second gear ring 2, the tops of the two second planet wheels 7 are both rotationally connected with the central shaft 4 at the top of the second sun wheel 10 through a second planet carrier 8.
Further, the bottom of the second planet wheel 7 is connected with a second planet carrier 8 through a pin shaft, the bottom of the second planet carrier 8 is connected with an output shaft in a transmission mode, and kinetic energy is output through the second planet carrier 8.
Further, a central point that lies in the bottom in two first planet carriers 5 puts and is connected with 4 transmissions of center pin through the round pin axle, the outside cover of center pin 4 is equipped with lantern ring 9, and the bottom of lantern ring 9 is through extrusion spring 11 and 4 elastic connection of center pin, the top of center pin 4 is rotated and is connected with a plurality of kellies 13, a plurality of kellies 13 are through selling epaxial recess and round pin axle joint, and a plurality of kellies 13 all around 4 annular arrays of center pin, a plurality of kellies 13 all rotate with center pin 4 through torsional spring pivot 12 and are connected, the elasticity of extrusion spring 11 is greater than the size of the torsional force of torsional spring pivot 12.
Further, the diameters of the first planet wheel 6 and the second planet wheel 7 are both smaller than the first sun wheel 3 and the second sun wheel 10, respectively, and the diameter of the second planet wheel 7 is larger than the diameter of the first planet wheel 6, so that the angular velocity of the first planet wheel 6 is larger than that of the first sun wheel 3, and the angular velocity of the second planet wheel 7 is larger than that of the second sun wheel 10.
The working principle is as follows: when the planetary gear set is used, the driving device drives the first sun gear 3 through the central shaft 4, so that the first sun gear 3 drives the first planetary gear 6 to rotate, the diameter of the first planetary gear 6 is smaller than that of the first sun gear 3, when the first planetary gear 6 is in meshing transmission, the linear velocity of the first sun gear 3 is equal to that of the first planetary gear 6, so that the angular velocity of the first planetary gear 6 is smaller than that of the first sun gear 3 when the first planetary gear 6 rotates, so that the planetary gear is subjected to one-stage speed reduction, when the first planetary gear 6 rotates, the central shaft 4 fixedly connected with the transmission central position of the first planetary gear 5 drives the second sun gear 10, the second sun gear 10 further drives the second planetary gear 7 to rotate, and the original one-stage speed reduction is expanded into two stages through the same principle as that of the first-stage planetary gear, so that the torsional force is dispersed to a certain degree, therefore, the stress of each stage of planet wheel and sun wheel is reduced, and the possibility of gear damage is further reduced; when the decelerating motion of different degrees is carried out to needs, can carry out whole change to the planet wheel of second level, draw the lantern ring 9 downwards, when moving to a certain degree, lantern ring 9 loses the limiting displacement to kelly 13, under torsional spring pivot 12's effect, kelly 13 loses the joint effect to the round pin axle of welding on first planet carrier 5, thereby make second level reduction gears can take off, when carrying out the decelerating planet wheel change of new one-level, after center pin 4 reachs appointed position, loosen lantern ring 9, because the effect of extrusion spring 11, make lantern ring 9 push away the kelly 13 inboard, thereby make kelly 13 joint at the round pin epaxially, with this fixed connection to the new one-level planet wheel of completion, convenient and fast.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A planetary gear transmission mechanism for a speed reducer comprises a first sun gear (3) and a first planet gear (6), and is characterized in that the outer side of the first sun gear (3) is meshed and rotatably connected with two first planet gears (6), the outer sides of the two first planet gears (6) are meshed and connected with a second gear ring (2), a central shaft (4) is embedded in the central position of the first sun gear (3), a first planet carrier (5) is rotatably connected onto the central shaft (4), the two horizontal ends of the first planet carrier (5) are rotatably connected with pin shafts of the two first planet gears (6) respectively, the bottom of the first planet gear (6) is rotatably connected with the first planet carrier (5), the central position of the first planet carrier (5) is rotatably connected with a second sun gear (10) through the central shaft (4), the outer side of the second planet gear (10) is meshed and rotatably connected with two second planet gears (7), and the outer sides of the two second planet wheels (7) are meshed with a first gear ring (1), and the tops of the two second planet wheels (7) are rotatably connected with a central shaft (4) at the top of a second sun wheel (10) through a second planet carrier (8).
2. A planetary gear transmission mechanism for a speed reducer according to claim 1, wherein the bottoms of the second planet wheels (7) are both rotatably connected with a second planet carrier (8) through pin shafts, and the bottoms of the second planet carriers (8) are both in transmission connection with output shafts.
3. A planetary gear transmission mechanism for a speed reducer according to claim 1, wherein one central position of the two first planet carriers (5) at the bottom is in transmission connection with the central shaft (4) through a pin shaft, a sleeve ring (9) is sleeved outside the central shaft (4), and the bottom of the sleeve ring (9) is elastically connected with the central shaft (4) through a compression spring (11).
4. A planetary gear transmission mechanism for speed reducer according to claim 1, wherein a plurality of clamping rods (13) are rotatably connected to the top end of the central shaft (4), and the plurality of clamping rods (13) are arranged in an annular array around the central shaft (4), and the plurality of clamping rods (13) are rotatably connected to the central shaft (4) through torsion spring rotating shafts (12).
5. A planetary gear according to claim 1, characterised in that the first planet wheel (6) and the second planet wheel (7) each have a smaller diameter than the first sun wheel (3) and the second sun wheel (10), respectively.
6. A planetary gearing for a reduction gear according to claim 1, characterised in that the diameter of the second planet wheels (7) is larger than the diameter of the first planet wheels (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189599.2U CN210715764U (en) | 2019-07-26 | 2019-07-26 | Planetary gear transmission mechanism for speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189599.2U CN210715764U (en) | 2019-07-26 | 2019-07-26 | Planetary gear transmission mechanism for speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210715764U true CN210715764U (en) | 2020-06-09 |
Family
ID=70926793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921189599.2U Active CN210715764U (en) | 2019-07-26 | 2019-07-26 | Planetary gear transmission mechanism for speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210715764U (en) |
-
2019
- 2019-07-26 CN CN201921189599.2U patent/CN210715764U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107191553A (en) | The electronic a11wheel drive of double speed with separation two-stage reduction planetary system | |
| CN205534042U (en) | Closed harmonic planetary gear reducer | |
| CN216842951U (en) | Multi-degree-of-freedom transmission mechanism | |
| CN210715764U (en) | Planetary gear transmission mechanism for speed reducer | |
| CN205654786U (en) | Planetary speed reducer | |
| CN104061295B (en) | Rub planetary reduction gear | |
| CN201110353Y (en) | Helical teeth planet time-shelf mechanism | |
| CN210821790U (en) | Two-stage speed reduction coaxial electric driving device | |
| CN205298420U (en) | Syntropy dual output planet gear | |
| CN201386759Y (en) | Gearbox | |
| CN105965499A (en) | Transmission gear of horizontal multi-joint robot wrist rotating shaft | |
| CN210874057U (en) | Automatic mahjong machine and shuffle large disc device and mahjong machine large disc bearing applied to automatic mahjong machine | |
| CN107882925A (en) | Front drive axle of tractor deceleration transmission system | |
| CN204127242U (en) | Variable oblique plane type stepless speed variator | |
| CN203809637U (en) | Speed reduction device with torsion induction differential planetary gear trains | |
| CN209009469U (en) | A kind of transshipment acitivity of workpiece unchanged direction | |
| CN107128173A (en) | The steering and driving axle of differential structure | |
| CN209196049U (en) | Compound epicyclic reduction gear | |
| CN216242073U (en) | Large reduction ratio structure based on planetary gear train | |
| CN206749536U (en) | The steering and driving axle of differential structure | |
| CN207814393U (en) | A kind of planet gear transmission device | |
| CN220822823U (en) | Helical tooth structure in-line output tubular motor speed reducing combination | |
| CN210830338U (en) | Novel two-stage planetary reducer | |
| CN209309230U (en) | A kind of planet gear transmission device | |
| CN214928729U (en) | Narrow wheel-pitch front drive axle of medium-horsepower gardening tractor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |