CN210566052U - Planetary differential speed reducer - Google Patents
Planetary differential speed reducer Download PDFInfo
- Publication number
- CN210566052U CN210566052U CN201920110111.6U CN201920110111U CN210566052U CN 210566052 U CN210566052 U CN 210566052U CN 201920110111 U CN201920110111 U CN 201920110111U CN 210566052 U CN210566052 U CN 210566052U
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- gear
- input shaft
- external gear
- shaft
- output shaft
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Abstract
The utility model discloses a planet differential reduction gear, its characterized in that input shaft, the output shaft all is in on the same central line, the input shaft is the staged eccentric shaft, the position department of installing left external gear on the input shaft, right external gear is eccentric section, internal gear and left external gear, right external gear mesh simultaneously in the internal gear pair, a gear linkage mechanism is constituteed with the roller bearing to the internal gear pair, the input shaft rotates, the internal gear is fixed, force left external gear, right external gear to do planetary motion around the internal gear, the motion that left external gear, right external gear were done around the input shaft is reverse low-speed rotation motion, the rotation motion of left external gear, right external gear is transmitted the output shaft by the rocking arm; the transmission system has the advantages of novel structure, high power density and strong bearing capacity.
Description
Technical Field
The utility model relates to the field of power machinery, especially, relate to a planet differential reduction gear.
Background
Mechanical transmission is one of the most classical core technologies of mechanical engineering subjects, a mechanical transmission system is widely applied in the industrial field, and the mechanical transmission system is almost needed to be used for speed change in all occasions with prime movers, so that speed matching of a working machine is realized, and speed-up torque reduction or speed-down torque increase is completed.
The planetary gear transmission with small tooth difference has the advantages of large transmission ratio, compact structure, small volume, light weight, high transmission efficiency, large bearing capacity and the like, and is widely applied to the power transmission fields of metallurgical machinery, hoisting and transporting machinery, engineering machinery, chemical machinery, textile machinery and the like. Meanwhile, due to the characteristic of multi-tooth meshing, the error homogenization effect is obviously beneficial to improving the transmission precision, and the method is more and more widely applied to the field of mechanical transmission in recent years.
In order to solve the difficult problems of small transmission ratio, low power density and the like of the transmission system in the prior art, the utility model discloses a planetary differential speed reducer has the advantages of large transmission ratio and the like. Because the gear pair adopts asymmetric gears, the number of pairs of teeth which are in contact bearing is large, the bearing capacity of the transmission system is strong, and the service life is long. The utility model discloses novel structure, drive ratio are big, both can satisfy the actual demand of engineering effectively, can produce great economic benefits again.
Disclosure of Invention
In order to overcome the above-mentioned not enough, the utility model provides a planet differential reduction gear, this transmission system novel structure, bearing capacity is strong, and power density is high, can realize great drive ratio under less volume.
A planetary differential speed reducer is characterized in that an input shaft and an output shaft are positioned on the same central line, the input shaft is a step-type eccentric shaft, positions of the input shaft, where a left external gear and a right external gear are installed, are eccentric sections, an internal gear in an internal gear pair is simultaneously meshed with the left external gear and the right external gear, the internal gear pair and a rolling shaft form a gear connecting rod mechanism, the input shaft rotates, the internal gear is fixed and forces the left external gear and the right external gear to do planetary motion around an internal gear, the motion of the left external gear and the right external gear around the input shaft is reverse low-speed self-rotation motion, and the self-rotation motion of the left external gear and the right external gear is transmitted to the output shaft by a;
furthermore, the tooth numbers of the left external gear, the right external gear and the internal gear are close, the rotating center lines of the left external gear and the right external gear are not coincident with the center line of the output shaft, the left external gear, the right external gear and the internal gear are all asymmetric gears, the tooth profiles on two sides of the gear teeth are asymmetric tooth profiles, the pressure angle between the tooth profile on the working surface and the tooth profile on the non-working surface is not equal, the tooth profile on the working surface side is a large pressure angle, and the tooth profile on the non;
furthermore, the left side of the input shaft is arranged on the cover through a left side bearing of the input shaft, the inner ring of the left bearing of the input shaft is in transition fit with the input shaft, the left side of the input shaft is provided with a radiating fan and a cover, the cover is connected with the cover through a bolt, and the right side of the input shaft is arranged on the rotating arm through a right side bearing of the input shaft;
furthermore, the inner gear is rigidly connected with the machine cover and the machine body through bolts, keeps still and is simultaneously meshed with a left outer gear and a right outer gear, the left outer gear is arranged on the input shaft through a left bearing of the planet carrier, and the right outer gear is arranged on the input shaft through a right bearing of the planet carrier;
furthermore, the right part of the left side roller is arranged on the left outer gear, the right part of the left side roller is arranged on the left planet carrier, the roller is assembled on the right outer gear through a left planet carrier roller sleeve and a right planet carrier roller sleeve, the right side roller is arranged on the rotating arm, the right side roller revolves to drive the rotating arm, and then the rotating arm transmits the motion to the output shaft;
furthermore, the left side of the output shaft is arranged on the machine body through a left bearing of the output shaft and a shaft sleeve, the right end of a right bearing of the output shaft is limited through a snap ring and is arranged on the machine body, and sealing rings are assembled outside end covers of the output shaft and the right side;
furthermore, the outer gears on the input shaft are provided with lightening holes, the outer sides of the inner gears are provided with lightening center grooves, the axial size of the cover is smaller, the axial size of the machine body is larger, and the cover and the machine body are provided with lightening center grooves which are connected with the inner gears through bolt groups.
Compared with the prior art, the beneficial effects of the utility model are as follows: the transmission principle is novel, the configuration is unique, the transmission ratio is large, the power density is high, and the device has a very wide commercial prospect, so that the blank of related technologies can be filled, and great social benefits and economic benefits can be generated.
Drawings
Fig. 1 is a planetary differential speed reducer.
FIG. 2 is a three-dimensional block diagram of the core components of the transmission system.
Fig. 3 is an asymmetrical tooth form.
Fig. 4 is a symmetrical tooth form.
In fig. 1:
1. an input shaft; 2. A hood; 3. A machine cover;
4. a left outer gear; 5. A left planet carrier rolling sleeve; 6. A right outer gear;
7. a planet carrier right bearing; 8. A roller; 9. A right planet carrier rolling sleeve;
10. an input shaft right bearing; 11. A shaft sleeve; 12. A body;
13. a right side end cap; 14. A seal ring; 15. An output shaft;
16. an output shaft right bearing; 17. An output shaft left bearing; 18. A right side roller;
19. a rotating arm; 20. A right planet carrier; 21. An internal gear;
22 a left planet carrier; 23. A left side roller; 24. A fan;
25. a planet carrier left bearing; 26. Input shaft left bearing.
Detailed Description
The embodiments of the present invention will be described with reference to the accompanying drawings, and the present invention will be described in detail with reference to fig. 1 to 4.
A planetary differential speed reducer comprises an input shaft 1, a machine cover 2, a machine cover 3, a left outer gear 4, a left planet carrier rolling sleeve 5, a right outer gear 6, a planet carrier right bearing 7, a rolling shaft 8, a right planet carrier rolling sleeve 9, an input shaft right bearing 10, a shaft sleeve 11, a machine body 12, a right end cover 13, a sealing ring 14, an output shaft 15, an output shaft right bearing 16, an output shaft left bearing 17, a right rolling shaft 18, a rotating arm 19, a right planet carrier 20, an inner gear 21, a left planet carrier 22, a left rolling shaft 23, a fan 24, a planet carrier left bearing 25 and an input shaft left bearing 26.
The box body comprises cover 3, organism 12, right-hand member lid 13, and input shaft 1 left side is installed on the organism through input shaft left bearing 18, and radiator fan 25 and aircraft bonnet 2 are installed to input shaft 1 left side, and aircraft bonnet 2 passes through the bolt to be connected with cover 3, and input shaft 1 right side is installed on the rocking arm through input shaft right side bearing 10.
The internal gear 21 is rigidly connected with the machine cover 3 and the machine body 12 through bolts, is kept stationary, and is simultaneously meshed with the left external gear 4 and the right external gear 6, the left external gear 4 is installed on the input shaft 1 through a planet carrier left bearing 25, and the right external gear 6 is installed on the input shaft 1 through a planet carrier right bearing 7.
The left roller 23 is mounted on the left outer gear 4 at its right portion, on the left planet carrier 22 at its right portion, the roller 8 is mounted on the right outer gear 5 via the left planet carrier roller 5 and the right planet carrier roller 9, the right roller 19 is mounted on the rotating arm 19, the right roller 18 revolves to drive the rotating arm 19 to rotate, and the rotating arm 19 transmits the motion to the output shaft 15.
The left side of the output shaft 15 is installed on the machine body 12 through the output shaft left bearing 17 and the shaft sleeve 11, the right end of the output shaft right bearing 16 is limited through a clamping ring and installed on the machine body 12, and the outer sides of the output shaft 15 and the right end cover 13 are provided with a sealing ring 14.
The above, only be the preferred embodiment of the utility model discloses a it is not right the utility model discloses do any restriction, all according to the utility model discloses any modification, change and equivalent change to above embodiment are done to the entity all still belong to within the scope of protection of the technique of the utility model.
Claims (1)
1. A planetary differential speed reducer is characterized in that an input shaft and an output shaft are positioned on the same central line, the input shaft is a step-type eccentric shaft, positions of the input shaft, where a left external gear and a right external gear are installed, are eccentric sections, an internal gear in an internal gear pair is simultaneously meshed with the left external gear and the right external gear, the internal gear pair and a rolling shaft form a gear connecting rod mechanism, the input shaft rotates, the internal gear is fixed, the motion of the left external gear and the right external gear around the input shaft is reverse low-speed autorotation motion, and the autorotation motion of the left external gear and the right external gear is transmitted to the output shaft by a rotating arm;
the tooth number of the left external gear, the tooth number of the right external gear and the tooth number of the internal gear are close, the rotating center lines of the left external gear and the right external gear are not coincident with the center line of the output shaft, the left external gear, the right external gear and the internal gear are all asymmetric gears, the tooth profiles on two sides of the gear teeth are asymmetric tooth profiles, the pressure angle between the tooth profile of the working surface and the tooth profile of the non-working surface is not equal, the tooth profile on the side of the working surface takes a large;
the left side of the input shaft is arranged on the cover through a left side bearing of the input shaft, an inner ring of the left bearing of the input shaft is in transition fit with the input shaft, the left side of the input shaft is provided with a radiating fan and a cover, the cover is connected with the cover through a bolt, and the right side of the input shaft is arranged on the rotating arm through a right side bearing of the input shaft;
the inner gear is rigidly connected with the machine cover and the machine body through bolts, keeps immovable and is simultaneously meshed with the left outer gear and the right outer gear, the left outer gear is arranged on the input shaft through a left bearing of the planet carrier, and the right outer gear is arranged on the input shaft through a right bearing of the planet carrier;
the right part of the left rolling shaft is arranged on the left outer gear, the right part of the left rolling shaft is arranged on the left planet carrier, the rolling shaft is assembled on the right outer gear through a left planet carrier rolling sleeve and a right planet carrier rolling sleeve, the right rolling shaft is arranged on the rotating arm, the right rolling shaft revolves to drive the rotating arm, and then the rotating arm transmits the motion to the output shaft;
the left side of the output shaft is arranged on the machine body through an output shaft left bearing and a shaft sleeve, the right end of an output shaft right bearing is limited through a snap ring and is arranged on the machine body, and sealing rings are assembled outside the output shaft and a right end cover;
the outer gear on the input shaft all has the lightening hole, and the internal gear outside sets up the lightening centre groove, and the axial dimension of cover is less, and the axial dimension of organism is great, all has the lightening centre groove on cover and the organism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920110111.6U CN210566052U (en) | 2019-01-18 | 2019-01-18 | Planetary differential speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920110111.6U CN210566052U (en) | 2019-01-18 | 2019-01-18 | Planetary differential speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566052U true CN210566052U (en) | 2020-05-19 |
Family
ID=70627440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920110111.6U Expired - Fee Related CN210566052U (en) | 2019-01-18 | 2019-01-18 | Planetary differential speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210566052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707838A (en) * | 2019-01-18 | 2019-05-03 | 天津工业大学 | A kind of few teeth difference unsymmetric gear planetary transmission system |
-
2019
- 2019-01-18 CN CN201920110111.6U patent/CN210566052U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707838A (en) * | 2019-01-18 | 2019-05-03 | 天津工业大学 | A kind of few teeth difference unsymmetric gear planetary transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 Termination date: 20210118 |