CN219366705U - Novel planetary reducer - Google Patents
Novel planetary reducer Download PDFInfo
- Publication number
- CN219366705U CN219366705U CN202320933042.5U CN202320933042U CN219366705U CN 219366705 U CN219366705 U CN 219366705U CN 202320933042 U CN202320933042 U CN 202320933042U CN 219366705 U CN219366705 U CN 219366705U
- Authority
- CN
- China
- Prior art keywords
- shell
- planet carrier
- planetary
- gear
- planet
- 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
Landscapes
- Retarders (AREA)
Abstract
A novel planetary reducer relates to the technical field of reducers. The planetary gear comprises a shell, wherein one end of the shell is rotatably provided with a planetary carrier assembly, and the other end of the shell is rotatably provided with an input shaft; the central position in the planet carrier assembly is rotatably provided with a sun gear through a first bearing, one end of the sun gear extends out of the planet carrier assembly and is connected with the input shaft, a plurality of planet gears which are uniformly distributed along the circumferential direction are meshed with the sun gear in the circumferential direction, and an inner gear ring which is meshed with the planet gears is arranged at the inner circumference of the shell; the planetary gear is rotatably arranged in the planetary carrier assembly through a planetary gear shaft, and is rotatably arranged on the planetary gear shaft through a second bearing, and the planetary gear shaft is an eccentric shaft. The planet gear is rotatably arranged in the planet carrier assembly through the eccentric planet wheel shaft, so that floating deviation compensation can be generated in the working process of the planet gear, and the result of the deviation compensation is that the planet gear can be always positioned at the center positions of the annular gear and the sun gear, so that the meshing gap is automatically distributed, the service life is prolonged, and the noise is reduced.
Description
Technical Field
The utility model relates to the technical field of speed reducers, in particular to a novel planetary speed reducer.
Background
The principle of the planetary reducer is a power transmission mechanism that reduces the revolution number of a motor to a desired revolution number by using a speed converter of a gear, and obtains a large torque. The gear with small teeth number on the transmission shaft of the planetary reducer is meshed with the large gear on the output shaft so as to achieve the purpose of speed reduction. Planetary reducer, as its name implies, rotates about a sun, and thus, planetary reducer is such that there are three planetary gears rotating about a sun gear. The planetary reducer has the characteristics of light weight, small volume, large transmission ratio range, high efficiency, stable operation, low noise, strong adaptability and the like, and is widely applied to the industrial field.
The existing planetary reducer has obvious defects: 1) The gear can not reach the design precision due to the processing error, thereby directly influencing the working performance, bearing capacity, working precision and service life of mechanical transmission and improving the working noise; 2) The planet carrier and the shell are usually required to be rotatably installed through two bearings which are arranged at intervals, the structure is complex, the axial length of the speed reducer is greatly increased, the pitch circle diameter of the gear of the inner gear ring is reduced, the tooth shape of the modulus is reduced under the same size, and the torque and the bearing capacity of the speed reducer are reduced.
Disclosure of Invention
The utility model aims to provide a novel planetary reducer which can effectively solve the problems in the background technology.
The technical scheme for achieving the purpose is as follows: a novel planetary reducer, characterized in that: the planetary gear comprises a shell, wherein one end of the shell is rotatably provided with a planetary carrier assembly, and the other end of the shell is rotatably provided with an input shaft;
the central position in the planet carrier assembly is rotatably provided with a sun gear through a first bearing, one end of the sun gear extends out of the planet carrier assembly and is connected with the input shaft, a plurality of planet gears which are uniformly distributed along the circumferential direction are meshed with the sun gear in the circumferential direction, and an inner gear ring which is meshed with the planet gears is arranged at the inner circumference of the shell; the planetary gear is rotatably arranged in the planetary carrier assembly through a planetary gear shaft, and is rotatably arranged on the planetary gear shaft through a second bearing, and the planetary gear shaft is an eccentric shaft. Further, the eccentric amount of the planetary wheel shaft is 0.5-1 mm. Further, a circle of annular cavity with a circular section is arranged between the shell and the planet carrier assembly, and a circle of steel balls with diameters matched with the diameters of the sections of the annular cavity are filled in the annular cavity.
Further, the housing comprises a left side housing and a right side housing which are connected with each other, the planet carrier assembly is rotatably arranged in the left side housing, and the input shaft is rotatably arranged in the right side housing;
the planet carrier assembly comprises a left side planet carrier and a right side planet carrier which are connected with each other, the planet wheel and the sun wheel are respectively arranged between the left side planet carrier and the right side planet carrier, and the annular cavity is arranged between the left side shell and the left side planet carrier. Further, a circle of annular groove with an opening facing left is arranged between the left side planet carrier and the left side shell, a round hole which is communicated with the annular groove and used for filling steel balls into the annular cavity is arranged on the outer side wall of the annular cavity, a first framework oil seal is arranged in the annular groove, and an annular baffle is further arranged between the end wall of the first framework oil seal and the left side shell.
Further, the round hole is formed by involution of a semicircular hole arranged on the inner wall of the left shell and a semicircular hole arranged on the outer side wall of the left planet carrier, the inner wall of the annular baffle is connected with a semicircular plug, the semicircular plug is inwards plugged in the semicircular hole of the left shell, and the inner end of the semicircular plug is arranged as a cambered surface in rolling fit with the steel ball.
Further, the input shaft is rotatably installed in the right side shell through a third bearing, the outer side of the third bearing is sealed and limited through a second framework oil seal installed between the input shaft and the right side shell, and the inner side of the third bearing is limited through an auricular clamp spring arranged on the input shaft.
The utility model has the beneficial effects that:
the planet gear is rotatably arranged in the planet carrier assembly through the eccentric planet wheel shaft, so that floating deviation compensation can be generated in the working process of the planet gear, and the planet gear can be always positioned at the center positions of the inner gear ring and the sun gear as a result of the deviation compensation, so that the meshing gap is automatically distributed, the service life is prolonged, the noise is reduced, and the lubrication is improved. When the planetary gear deviates to one side of the inner gear ring or the sun gear due to processing errors, one side of the planetary gear can be pressed against the eccentric shaft in the rotating process, so that the eccentric planetary gear shaft is driven to rotate in the opposite direction together, and automatic deviation compensation is formed. A ring-shaped cavity is arranged between the shell and the planet carrier component, a ring of steel balls with diameters matched with the diameters of the sections of the ring-shaped cavity are filled in the ring-shaped cavity, and the shell and the planet carrier component are in running fit through the steel balls, so that a bearing with a larger wall thickness is omitted, the structure of the speed reducer is more compact, the axial size is shorter, the pitch diameter of a gear of the annular gear can be larger, tooth shapes with larger modulus can be designed under the same size, and the torque and the bearing capacity of the speed reducer are larger.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is a left side view of the present utility model with the first frame oil seal removed and the annular flap removed; FIG. 3 is a partial schematic view of the present utility model;
fig. 4 is a schematic structural diagram of the planetary gears meshed with the sun gear and the ring gear respectively;
FIG. 5 is a schematic view of the structure of the annular baffle;
FIG. 6 is a block diagram of a planetary axle;
fig. 7 is a side view of the planet axle.
Detailed Description
As shown in fig. 1-7, the utility model comprises a shell 1, wherein the shell 1 comprises a left shell 1.1 and a right shell 1.2 which are connected with each other, a sealing ring 1.3 is arranged between the left shell 1.1 and the right shell 1.2, a planet carrier assembly 2 is rotatably arranged in the left shell 1.1, an input shaft 4 is rotatably arranged in the right shell 1.2 through a third bearing 3, the outer side of the third bearing 3 is sealed and limited through a second framework oil seal 5 arranged between the input shaft 4 and the right shell 1.2, the second framework oil seal 5 can prevent sand, dust, moisture and the like from entering, the lubrication effect is ensured, and the inner side of the third bearing 3 is limited through an earless clamp spring 6 arranged on the input shaft 4.
The planet carrier assembly 2 comprises a left planet carrier 2.1 and a right planet carrier 2.2 which are connected with each other, a sun gear 7 is rotatably arranged between the left planet carrier 2.1 and the right planet carrier 2.2 through a first bearing 18, the right end of the sun gear 7 extends out of the right planet carrier 2.2 and is connected with the input shaft 4, a plurality of planet gears 8 which are uniformly distributed along the circumferential direction are meshed with the sun gear 7 in the circumferential direction, and an inner ring gear 1.21 which is meshed with the planet gears 8 is arranged on the inner circumference of the left side shell 1.1.
Triangular convex straight columns 2.3 are fixedly arranged on the left side planet carriers 2.1 between the planet gears 8, two side faces of the convex straight columns 2.3 are arc-shaped faces, and the right side planet carriers 2.2 are connected with the convex straight columns 2.3 of the left side planet carriers 2.1 through countersunk bolts 2.4.
The planet wheel 8 is rotatably arranged between the left side planet carrier 2.1 and the right side planet carrier 2.2 through a planet wheel shaft 9, the planet wheel shaft 9 is rotatably connected with the left side planet carrier 2.1 and the right side planet carrier 2.2, the planet wheel 8 is rotatably arranged on the planet wheel shaft 9 through a second bearing 10, the planet wheel shaft 9 is rotatably arranged to be an eccentric shaft, and the eccentric value a is 0.5-1 mm. A circle of annular cavity 11 with a circular section is arranged between the left side shell 1.1 and the left side planet carrier 2.1, a circle of steel balls 12 with diameters matched with the diameter of the section of the annular cavity 11 are filled in the annular cavity 11, a circle of annular groove 13 with an opening facing left is arranged between the left side planet carrier 2.1 and the left side shell 1.1, a round hole 17 which is communicated with the annular groove 13 and used for filling the steel balls 12 into the annular cavity is arranged on the outer side wall of the annular cavity 11, and the arrangement of the round hole 17 is convenient for installation, replacement and maintenance of the steel balls 12.
The annular groove 13 is internally provided with a first framework oil seal 14, the first framework oil seal 14 can prevent sand, dust, water vapor and the like from invading, the lubrication effect is ensured, and an annular baffle 15 for sealing the steel ball 12 is further arranged between the end wall of the first framework oil seal 14 and the left side shell 1.1.
The round hole 17 is formed by involution of a semicircular hole 17.1 arranged on the inner wall of the left side shell 1.1 and a semicircular hole 17.2 arranged on the outer side wall of the left side planet carrier 2.1, a semicircular plug 16 is connected to the inner wall of the annular baffle 15, the semicircular plug 16 is internally plugged in the semicircular hole 17.1 of the left side shell 1.1, and an inner end of the semicircular plug 16 is provided with a cambered surface in rolling fit with the steel ball 12.
The working principle of the planetary reducer of the embodiment is that a motor shaft is connected with an input shaft 4 and transmits torque to a sun gear 7, the sun gear 7 is meshed with a planet gear 8, the planet gear 8 is meshed with an inner gear ring 1.21, revolution and autorotation are generated, and the torque is transmitted to a load part through a first planet carrier 304 to realize speed reduction. When the planet wheel 8 deviates to one side of the inner gear ring 1.21 or the sun wheel 7 due to processing errors, one extruded side can be clung to the planet wheel shaft 9 in the rotating process, so that the eccentric planet wheel shaft 9 is driven to rotate in the opposite direction together, and automatic deviation compensation is formed.
Compared with the prior art, the planetary reducer has the advantages of simple structure, small overall size, strong bearing capacity and the like.
The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.
Claims (7)
1. A novel planetary reducer, characterized in that: the planetary gear comprises a shell, wherein one end of the shell is rotatably provided with a planetary carrier assembly, and the other end of the shell is rotatably provided with an input shaft;
the central position in the planet carrier assembly is rotatably provided with a sun gear through a first bearing, one end of the sun gear extends out of the planet carrier assembly and is connected with the input shaft, a plurality of planet gears which are uniformly distributed along the circumferential direction are meshed with the sun gear in the circumferential direction, and an inner gear ring which is meshed with the planet gears is arranged at the inner circumference of the shell; the method is characterized in that: the planetary gear is rotatably arranged in the planetary carrier assembly through a planetary gear shaft, and is rotatably arranged on the planetary gear shaft through a second bearing, and the planetary gear shaft is an eccentric shaft.
2. The novel planetary reducer according to claim 1, wherein: the eccentric amount of the planetary wheel shaft is 0.5-1 mm.
3. The novel planetary reducer according to claim 1, wherein: a circle of annular cavity with a circular section is arranged between the shell and the planet carrier assembly, a circle of steel balls with diameters matched with the diameters of the sections of the annular cavity are filled in the annular cavity, and the shell is rotationally connected with the planet carrier assembly through the steel balls.
4. A novel planetary reducer according to claim 3, characterized in that: the planetary carrier assembly is rotatably arranged in the left side shell, and the input shaft is rotatably arranged in the right side shell;
the planet carrier assembly comprises a left side planet carrier and a right side planet carrier which are connected with each other, the planet wheel and the sun wheel are respectively arranged between the left side planet carrier and the right side planet carrier, and the annular cavity is arranged between the left side shell and the left side planet carrier.
5. The novel planetary reducer according to claim 4, wherein: an annular groove with a left opening is formed between the left side planet carrier and the left side shell, a round hole which is communicated with the annular groove and used for filling steel balls into the annular cavity is formed in the outer side wall of the annular cavity, a first framework oil seal is arranged in the annular groove, and an annular baffle is further arranged between the end wall of the first framework oil seal and the left side shell.
6. The novel planetary reducer according to claim 5, wherein: the round hole is formed by involution of a semicircular hole arranged on the inner wall of the left shell and a semicircular hole arranged on the outer side wall of the left planet carrier, the inner wall of the annular baffle is connected with a semicircular plug, the semicircular plug is inwards plugged in the semicircular hole of the left shell, and the inner end of the semicircular plug is arranged to be a cambered surface in rolling fit with the steel ball.
7. A novel planetary reducer according to claim 3, characterized in that: the input shaft is rotatably arranged in the right side shell through a third bearing, the outer side of the third bearing is sealed and limited through a second framework oil seal arranged between the input shaft and the right side shell, and the inner side of the third bearing is limited through an earless clamp spring arranged on the input shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320933042.5U CN219366705U (en) | 2023-04-24 | 2023-04-24 | Novel planetary reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320933042.5U CN219366705U (en) | 2023-04-24 | 2023-04-24 | Novel planetary reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366705U true CN219366705U (en) | 2023-07-18 |
Family
ID=87144876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320933042.5U Active CN219366705U (en) | 2023-04-24 | 2023-04-24 | Novel planetary reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366705U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753298A (en) * | 2023-08-14 | 2023-09-15 | 江苏速豹动力科技有限公司 | Planet row limiting device and equipment using same |
| CN117432767A (en) * | 2023-12-21 | 2024-01-23 | 中国第一汽车股份有限公司 | Speed reducer and vehicle |
| CN118242402A (en) * | 2024-05-08 | 2024-06-25 | 宁波欧易液压有限公司 | Quick detachable formula planetary reducer structure |
-
2023
- 2023-04-24 CN CN202320933042.5U patent/CN219366705U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753298A (en) * | 2023-08-14 | 2023-09-15 | 江苏速豹动力科技有限公司 | Planet row limiting device and equipment using same |
| CN116753298B (en) * | 2023-08-14 | 2023-11-14 | 江苏速豹动力科技有限公司 | Planet row limiting device and equipment using same |
| CN117432767A (en) * | 2023-12-21 | 2024-01-23 | 中国第一汽车股份有限公司 | Speed reducer and vehicle |
| CN117432767B (en) * | 2023-12-21 | 2024-03-29 | 中国第一汽车股份有限公司 | Speed reducer and vehicle |
| CN118242402A (en) * | 2024-05-08 | 2024-06-25 | 宁波欧易液压有限公司 | Quick detachable formula planetary reducer structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219366705U (en) | Novel planetary reducer | |
| CN106352024B (en) | A kind of single eccentric short transmission chain retarder | |
| CN207093681U (en) | A kind of Cycloid Steel Ball Planetary Transmission mechanism and its joint of robot deceleration device | |
| CN101649816A (en) | Wind-power generating yaw speed reducer | |
| CN205350312U (en) | Planetary gear transmission device with embedded bearing mechanism | |
| CN107939914A (en) | A kind of mine electric wheel dump retarder | |
| CN112762146A (en) | Electric driving wheel with planetary speed reduction transmission | |
| CN110529558B (en) | Single-input rotary disc type planetary reduction gearbox structure | |
| CN110836223A (en) | Crossed roller bearing and speed reducer | |
| CN111594580A (en) | Hypoid speed reducer with parallel shaft gear transmission | |
| CN214171298U (en) | Precise planetary gear speed reducer | |
| CN212318691U (en) | Ball worm driving gyrator | |
| CN212028472U (en) | High-rigidity planetary reducer | |
| CN209212896U (en) | Eccentrically arranged type mechanical reduction gear | |
| CN206175573U (en) | Single eccentric short driving chain reduction gear | |
| CN210318407U (en) | Integrated robot joint structure | |
| CN115163757A (en) | Cycloidal pin gear planetary reducer | |
| CN209781629U (en) | Novel rotary speed reducer | |
| CN1183523A (en) | Cycloidal ball planet speed reducer | |
| CN201013844Y (en) | Planet peed-reducing device without planetary supporter | |
| CN215444941U (en) | Industrial robot's planetary reducer | |
| CN217603312U (en) | Precise connecting assembly for transmission gear box | |
| CN221196021U (en) | Speed reducer with high transmission efficiency | |
| CN220646639U (en) | Swing needle tooth speed reducer | |
| CN220416200U (en) | High-precision planetary reducer integrated with electromechanics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |