CN202091433U - Planetary gear reducer - Google Patents
Planetary gear reducer Download PDFInfo
- Publication number
- CN202091433U CN202091433U CN 201120086646 CN201120086646U CN202091433U CN 202091433 U CN202091433 U CN 202091433U CN 201120086646 CN201120086646 CN 201120086646 CN 201120086646 U CN201120086646 U CN 201120086646U CN 202091433 U CN202091433 U CN 202091433U
- Authority
- CN
- China
- Prior art keywords
- gear
- planetary gear
- level
- housing
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/46—Systems consisting of a plurality of gear trains each with orbital gears, i.e. systems having three or more central gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Retarders (AREA)
Abstract
The utility model discloses a planetary gear reducer, which comprises a shell, a support flange, a spline sleeve, a primary planetary gear train, a secondary planetary gear train and a third-level planetary gear train, wherein the shell is used for outputting torque, the support flange is assembled together with the shell through bearings, the spline sleeve serves as a high-speed input shaft of the reducer, and the primary planetary gear train, the secondary planetary gear train and the third-level planetary gear train are arranged in the shell and used for transmitting input torque to the shell through gears. A third-level planet carrier of the third-level planetary gear train is provided with a third-level planet carrier side plate and five cantilever beam cylinders casted together with a third-level planet carrier body, and the bearings at the joints of the shell and the support flange are two single-row tapered roller bearings. By the aid of the planet carrier side plate, strength of the planet carrier is enhanced and the service life of the planetary gear reducer is prolonged. Since the single-row tapered roller bearings (mounted together correspondingly) are adjustable in spacing, bearing support points of the bearings are enhanced and static load of the integral planetary gear reducer is increased. By the aid of changes on materials, the heating processing technology and the processing technology of the gears, the number of the gears is decreased and the strength of the gears is enhanced.
Description
Technical field
The utility model relates to a kind of speed reducer, especially a kind of planet-gear speed reducer.
Background technique
Speed reducer is a kind of device that mates rotating speed and transmitting torque between prime mover and working machine, and utilization is very extensive in modern mechanical.The twentieth century end, the existing very great development of speed reducer technology.Compared with the past, cylindrical gears generally adopts carburizing and quenching, roll flute, and volume was littler when bearing capacity obviously improved, efficient is higher, weight is lighter, noise is lower; Adopt preferred number during design, Dimensions is neat, and the general interchangeability of part is strong; Structural design is more and more diversified, and the speed reducer kind is more and more abundanter, thereby has enlarged using scope.
Characteristics such as speed reducer has starting and work limitation rate height, less energy consumption, noise are low, compact dimensions, aesthetic in appearance, good economy performance are mainly used in the various crane gears such as railway and truck crane, boats and ships, oil field, colliery, harbour.
Yet the high-mechanic of speed reducer, littler volume are a double-edged sword equally.In transmitting the process of big torque the stand under load part especially the intensity of planet carrier often can not increase again and strengthen, using process occur easily that strength member damages in fatigue period may.In addition, speed reducer spring bearing (as mining development machine running part) under some operating modes need bear very big weight, and is most important in cooperating high loading work, and bearing is proposed very high requirement.
Summary of the invention
Damage easily when the little high-mechanic of volume in order to remedy above-mentioned speed reducer,, the utility model proposes a kind of planet-gear speed reducer the demanding defective of bearing.
A kind of planet-gear speed reducer, comprise housing as the torque output terminal, the flange bracket that is assembled together by bearing with housing, spline housing as speed reducer high speed input shaft, and in housing, input torque is taken turns train by gear transmission to one-level planet wheel train, secondary planet wheel train and the third-level planetary of housing, the third-level planetary frame of third-level planetary wheel train is provided with third-level planetary frame side plate and five and planet carrier body integrally casting overhang cylinder, and the bearing of housing and flange bracket joint is two single-row tapered roller bearings.
Housing is mainly by ring gear, the gear ring end cap that is connected with ring gear one end by bolt and form by the gear ring flange that bolt is connected with the ring gear the other end.
Sun gear and planetary pinion material adopt 18Cr2Ni4WA in the third-level planetary wheel train, use the technology of low-temperature tempering behind the carburizing and quenching, and surface hardness is greater than 58HRC, core hardness 341-367HBS.
The gear of the planetary pinion train of speed reducer adopts fine finishing to stay the technology of roll flute after the mill surplus, and the accuracy of gear is six grades.
The utility model utilizes a planet carrier side plate, increases the intensity of planet carrier, improves the life-span of using; By the single-row tapered roller bearing that (correspondence is installed together) two spacings can be regulated, increase the load-carrying strong point of bearing, improve the static load of complete machine; Increase the strength of gear teeth by changing gear material, heat treatment process, processing technology simultaneously reducing module.
Description of drawings
Fig. 1 is a side-looking generalized section of the present utility model;
Wherein, 1, housing, 11, ring gear, 12, gear ring end cap, 13, the gear ring flange, 2, flange bracket, 3, spline housing, 4, single-row taper roller bearing, 5, one-level planet wheel train, 6, secondary planet wheel train, 7, third-level planetary wheel train, 70, third-level planetary frame side plate, 71 overhang cylinders, 72, sun gear, 73, planetary pinion, 74, the third-level planetary frame.
Embodiment
Bottom comes the utility model is described further in conjunction with the accompanying drawings.
Referring to Fig. 1, a kind of planet-gear speed reducer, comprise housing 1 as the torque output terminal, the flange bracket 2 that is assembled together by bearing with housing, spline housing 3 as speed reducer high speed input shaft, and the one-level planet wheel train 5 that in housing, input torque is arrived housing by gear transmission, secondary planet wheel train 6 and third-level planetary wheel train 7, the third-level planetary frame 74 of third-level planetary wheel train is provided with the overhang cylinder 71 of third-level planetary frame side plate 70 and five and planet carrier body integrally casting, and the bearing of housing and flange bracket joint is two single-row tapered roller bearings 4.Described spline housing is connected with external power source, pass third-level planetary wheel train, secondary planet wheel train and one-level planet wheel train successively from flange bracket, the planet carrier of third-level planetary wheel train is fixedly connected on the backup flange, and torque is tied to third-level planetary wheel train by one-level planet wheel wheel and transmits step by step.The spacing of two single-row tapered roller bearings of housing and flange bracket joint is adjusted spacing to greatest extent under the overall space condition of limited, make weight drop between the bearings spacing, and the similar two point-supported beam structures of striding have increased bearing capacity.Five overhang cylinders of third-level planetary frame and frame form as integrally casting in the third-level planetary wheel train.Be subjected to radial force very high herein, even at overhang cylindrical root place processing orthodrome, its bearing capacity improves limited, and increase a third-level planetary frame side plate herein, when being subjected to big radial force, power is born by all five overhang cylinders respectively, thereby increases the intensity of whole planet carrier, has improved working life.
Housing is mainly by ring gear 11, the gear ring end cap 12 that is connected with ring gear one end by bolt and form by the gear ring flange 13 that bolt is connected with the ring gear the other end.
Sun gear 72 and planetary pinion 73 materials adopt 18Cr2Ni4WA in the third-level planetary wheel train, use the technology of low-temperature tempering behind the carburizing and quenching, and surface hardness is greater than 58HRC, core hardness 341-367HBS.
The gear of the planetary pinion train of speed reducer adopts fine finishing to stay the technology of roll flute after the mill surplus, and the accuracy of gear is six grades.
After the utility model increased third-level planetary frame side plate, the third-level planetary frame was increasing a small amount of axial dimension, and under the situation that radial dimension does not have to increase fully, intensity obviously increases, and the work operating mode has had obviously to be improved.
The utility model adopts new material and technology, in the intensity allowed band, reduce heavily loaded planetary gear train module after, the gear-box overall dimension further reduces, bearing capacity but increases.
Two single-row tapered roller bearings of the present utility model have dropped between the two bearings fulcrum coupled equipment center of gravity, and stress is obviously improved.
In sum, more than be preferred embodiment of the present utility model only, be not to be used to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. planet-gear speed reducer, comprise the housing (1) of exporting torque, the flange bracket (2) that is assembled together by bearing with housing, spline housing (3) as speed reducer high speed input shaft, and the one-level planet wheel train (5) that in housing, input torque is arrived housing by gear transmission, secondary planet wheel train (6) and third-level planetary wheel train (7), it is characterized in that, the third-level planetary frame (74) of third-level planetary wheel train is provided with the overhang cylinder (71) of third-level planetary frame side plate (70) and five and planet carrier body integrally casting, and the bearing of housing and flange bracket joint is two single-row tapered roller bearings (4).
2. a kind of planet-gear speed reducer according to claim 1, it is characterized in that, described housing is mainly by ring gear (11), the gear ring end cap (12) that is connected with ring gear one end by bolt and form by the gear ring flange (13) that bolt is connected with the ring gear the other end.
3. a kind of planet-gear speed reducer according to claim 1 is characterized in that, sun gear (72) and planetary pinion (73) material employing 18Cr2Ni4WA in the described third-level planetary wheel train, and surface hardness is greater than 58HRC, core hardness 341-367HBS.
4. a kind of planet-gear speed reducer according to claim 1 is characterized in that, the accuracy of gear of the planetary pinion train of described speed reducer is six grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120086646 CN202091433U (en) | 2011-03-29 | 2011-03-29 | Planetary gear reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120086646 CN202091433U (en) | 2011-03-29 | 2011-03-29 | Planetary gear reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091433U true CN202091433U (en) | 2011-12-28 |
Family
ID=45366502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120086646 Expired - Lifetime CN202091433U (en) | 2011-03-29 | 2011-03-29 | Planetary gear reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155533A (en) * | 2011-03-29 | 2011-08-17 | 宁波新宏液压有限公司 | Planetary gear speed reducer |
-
2011
- 2011-03-29 CN CN 201120086646 patent/CN202091433U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155533A (en) * | 2011-03-29 | 2011-08-17 | 宁波新宏液压有限公司 | Planetary gear speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |