CN105003603A - Load-sharing planetary reducer - Google Patents
Load-sharing planetary reducer Download PDFInfo
- Publication number
- CN105003603A CN105003603A CN201510390066.0A CN201510390066A CN105003603A CN 105003603 A CN105003603 A CN 105003603A CN 201510390066 A CN201510390066 A CN 201510390066A CN 105003603 A CN105003603 A CN 105003603A
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- China
- Prior art keywords
- train
- planet wheel
- planetary
- shaft
- ring
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Classifications
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- 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
- F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a load-sharing planetary reducer which comprises a box body, an input shaft, an output shaft and a planetary gear train arranged in the box body, wherein the planetary gear train comprises a sun gear, a planetary frame, planetary gears, a planetary gear axle and an inner gear ring, and a center ring is arranged between each planetary gear and the planetary gear axle; each center ring and each planetary gear rotate at the same angular speed, and a radial clearance capable of forming an oil film layer is formed between each center ring and each planetary gear. As each center ring and each planetary gear rotate at the same angular speed, and a large tolerance clearance, namely the radial clearance is formed between each center ring and each planetary gear, oil continuously enters the clearance during operating. The oil suction of the radial clearance and the squeezing action of a moving surface on oil can generate the oil film layer with certain elasticity, and the elastic deformation of the oil film layer enables each planetary gear to float in a certain range. When the planetary gears are unevenly loaded, the uniform distribution of load among the planetary gears is automatically realized. Thus, the impact is reduced, the noise is reduced, and the service life of the planetary reducer is prolonged.
Description
Technical field
The present invention relates to a kind of planetary reducer, particularly one all carries planetary reducer.
Background technique
Planetary reducer is a kind of power transmission mechanism, it utilizes the velocity transducer of gear, the winding number of motor is decelerated to desired winding number, and obtain larger torque, its volume is little, lightweight, bearing capacity is high, long service life, smooth running, there is the characteristic that power dividing, multiple tooth engagement are private, be applicable to the industrial departments such as lifting transport, engineering machinery, metallurgy, mine, petrochemical industry, building machinery, industry light industry textile industry, medical apparatus, instrument and apparatus, automobile, boats and ships, weapons and Aero-Space; The planetary gear train that existing planetary reducer generally comprises casing, input shaft, output shaft and is located in casing, planetary gear train comprises sun gear, planet carrier, planet wheel, planet wheel shaft and ring gear; When input torque drives sun gear to rotate through input shaft, thus several planet wheels be distributed in around sun gear are combined in drives etc. point, planet wheel relies on ring gear and sun gear support to be swum in period, the vestige that planet wheel follows internal gear revolves round the sun along center, planet wheel rotarily drive the output shaft outputting power being linked to planet carrier; As everyone knows, can the effect of planetary reducer load balancing structure have extremely important meaning to the superiority that play power dividing transmission, but owing to easily producing load diatibution uneven phenomenon when manufacture machining error and assembly error make planet wheel engage, thus planet wheel can be made axially to occur deflection in the running, produce vibration and noise, reduce the working life of planetary reducer.
Therefore, for solving the problem, just need one all to carry planetary reducer, it can realize uniform load distribution between planet wheel automatically when planet wheel stand under load is uneven, to reduce the working life of impacting, reducing noise, extending planetary reducer.
Summary of the invention
In view of this, the object of the present invention is to provide one all to carry planetary reducer, automatically can realize uniform load distribution between planet wheel when planet wheel stand under load is uneven, to reduce the working life of impacting, reducing noise, extending planetary reducer.
Of the present inventionly all carry planetary reducer, the planetary gear train comprising casing, input shaft, output shaft and be located in casing, described planetary gear train comprises sun gear, planet carrier, planet wheel, planet wheel shaft and ring gear, is provided with the load balancing mechanism for offsetting planet wheel force in radial between described planet wheel and planet wheel shaft; Be provided with center ring between described planet wheel and planet wheel shaft, described center ring and planet wheel rotate with same angular velocity, and are provided with the radial clearance that can form oil lamella between described center ring and planet wheel.
Further, described center ring comprises ring body, and the end of described ring body radially extends to form the engaging piece for engaging with ring gear and sun gear.
Further, described ring body is also provided with the stop part for keeping the axial clearance between planet wheel and engaging piece.
Further, be provided with between described center ring and planet wheel shaft and all carry bearing.
Further, described casing comprises main tank and is connected to the input shaft-cup at main tank two ends and exports shaft-cup; Described main tank is fixedly connected with ring gear; Described input shaft-cup is removably connected with main tank and is provided with the input shaft bore for passing for input shaft; Described output shaft-cup is removably connected with main tank and is provided with the output shaft hole for passing for output shaft.
Further, described main tank and ring gear one-body molded.
Further, described planetary gear train comprises one-level train and secondary train, and described one-level train is connected by train transmission shaft with secondary train; Also be provided with the retainer for supporting wheel systems transmission shaft in described casing, the side of described retainer is fixedly connected with cabinet wall and is provided with the train transmission axis hole for passing for train transmission shaft.
Further, described one-level train is provided with three planet wheels be uniformly distributed circumferentially altogether, and described secondary train is provided with four planet wheels be uniformly distributed circumferentially altogether.
Beneficial effect of the present invention: of the present inventionly all carry planetary reducer, center ring is set up between planet wheel and planet wheel shaft, because center ring and planet wheel rotate with same angular velocity, and there is between center ring and planet wheel larger matching gap and radial clearance, during running, fluid continuously enters this gap, radial clearance can produce certain flexible oil lamella to the suction of oil and moving surface to the squeezing action of oil, the resiliently deformable of oil lamella makes planet wheel float in certain scope, automatically uniform load distribution between planet wheel can be realized when planet wheel stand under load is uneven, to reduce to impact, reduce noise, extend the working life of planetary reducer.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is A place enlarged view in Fig. 1.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is A place enlarged view in Fig. 1, as shown in the figure: the present embodiment all carry planetary reducer, the planetary gear train comprising casing, input shaft 2, output shaft 3 and be located in casing, described planetary gear train comprises sun gear 41, planet carrier 42, planet wheel 43, planet wheel shaft 44 and ring gear 45, center ring 5 is provided with between described planet wheel 43 and planet wheel shaft 44, described center ring 5 rotates with same angular velocity with planet wheel 43, and is provided with the radial clearance 9a that can form oil lamella between described center ring 5 and planet wheel 43, casing can adopt spheroidal graphite cast iron to make, to improve its rigidity and shock resistance, be connected with sun gear 41 after input shaft 2 stretches into casing, each planet wheel 43 is connected with planet carrier 42 by planet wheel shaft 44, and planet wheel 43 engages with sun gear 41 and ring gear 45 simultaneously, " radial direction " is with planet wheel shaft 44 for benchmark, in FIG namely upper and lower to, center ring 5 is set up between planet wheel 43 and planet wheel shaft 44, because center ring 5 and planet wheel 43 rotate with same angular velocity, and (radial clearance 9a is a microscopic gaps to have larger matching gap and radial clearance 9a between center ring 5 and planet wheel 43, can be such as 525-685 μm), during running, fluid continuously enters this gap, radial clearance 9a can produce certain flexible oil lamella to the suction of oil and moving surface to the squeezing action of oil, the resiliently deformable of oil lamella makes planet wheel 43 float in certain scope, automatically uniform load distribution between planet wheel 43 can be realized when planet wheel 43 stand under load is uneven, to reduce to impact, reduce noise, extend the working life of planetary reducer.
In the present embodiment, described center ring 5 comprises ring body 51, and the end of described ring body 51 radially extends to form the engaging piece 52 for engaging with ring gear 45 and sun gear 41; Ring body 51 is in circular; End i.e. its axial two ends of ring body 51, wherein an end exceeds the center hole of planet wheel 43 and the gear teeth direction to planet wheel 43 extends, and makes center ring 5 in boss-shaped; The periphery of engaging piece 52 is provided with engaging tooth, this engaging tooth is corresponding with the gear teeth of planet wheel 43, center ring 5 is engaged with ring gear 45 and sun gear 41 simultaneously, to ensure that planet wheel 43 and center ring 5 rotate with same direction, same rotating speed, and bear the position of the identical load in direction, stable center ring 5, eliminate planet wheel 43 and the relative movement of center ring 5, improve effect of load balancing mechanism and the working stability of planetary gear train.
In the present embodiment, described ring body 51 is also provided with the stop part 53 for keeping the axial clearance 9b between planet wheel 43 and engaging piece 52; Stop part 53 can be that engaging piece 52 part axial projection formed, and is preferably located at the joint of engaging piece 52 and ring body 51; Ring body 51, engaging piece 52, stop part 53 are one-body molded, are conducive to the structural strength improving center ring 5, simplify production and processing technology; The existence of axial clearance 9b can ensure the suction effect of radial clearance 9a to oil, reduces the frictional loss between planet wheel 43 and center ring 5 simultaneously, increases the service life.
In the present embodiment, be provided with between described center ring 5 and planet wheel shaft 44 and all carry bearing 6; All carrying bearing 6 can be rolling bearing, ensures center ring 5 and planet wheel 43 synchronous axial system.
In the present embodiment, described casing comprises main tank 11 and is connected to the input shaft-cup 12 at main tank 11 two ends and exports shaft-cup 13; Described main tank 11 is fixedly connected with ring gear 45; Described input shaft-cup 12 is removably connected with main tank 11 and is provided with the input shaft bore for passing for input shaft 2; Described output shaft-cup 13 is removably connected with main tank 11 and is provided with the output shaft hole for passing for output shaft 3; For reducing input shaft 2, the friction factor of output shaft 3 in movement process, and ensure its rotating accuracy, in supporting place of the parts such as input shaft 2, output shaft 3 and shaft-cup (comprise and input shaft-cup 12 and export shaft-cup 13), rolling bearing is all set, this is well known to those skilled in the art, and does not repeat them here; Main tank 11 and ring gear 45 can being formed in one, and to ensure the stable degree of ring gear 45, prevent from, because of the skew of ring gear 45, skidding occurs, improve the smoothness of this retarder operation, further the effect of load balancing mechanism of lifting planet wheel 43; Input shaft-cup 12, output shaft-cup 13 realize being connected by clamping bolt with between main tank 11, and structure is simple, are convenient to install, dismantle.
According to different user demands, this retarder can arrange single-stage or multistage wheel train structure, and when arranging multistage train, center ring 5 is optionally arranged in a certain level train; In the present embodiment, described planet wheel 43 is comprise one-level train and secondary train, and described one-level train is connected by train transmission shaft 7 with secondary train; Also be provided with the retainer 8 for supporting wheel systems transmission shaft 7 in described casing, the side of described retainer 8 is fixedly connected with cabinet wall and is provided with the train transmission axis hole for passing for train transmission shaft 7; As shown in Figure 1, the size of one-level train (being arranged in the drawings on the left of retainer 8) each parts is all less than secondary train (being positioned in the drawings on the right side of retainer 8), to realize double reduction; One-level train is provided with three circumferentially (on the circular orbit centered by planet wheel center) equally distributed planet wheels 43 altogether, and secondary train is provided with four planet wheels be uniformly distributed circumferentially 43 altogether; One-level train is connected with input shaft 2, and secondary train is connected with output shaft 3, is in transmission connection between one-level train and secondary train by train transmission shaft 7; In train transmission axis hole, rolling bearing is set, is conducive to the revolution sensitivity improving train transmission shaft.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. one kind all carries planetary reducer, the planetary gear train comprising casing, input shaft, output shaft and be located in casing, described planetary gear train comprises sun gear, planet carrier, planet wheel, planet wheel shaft and ring gear, it is characterized in that: between described planet wheel and planet wheel shaft, be provided with center ring, described center ring and planet wheel rotate with same angular velocity, and are provided with the radial clearance that can form oil lamella between described center ring and planet wheel.
2. according to claim 1ly all carry planetary reducer, it is characterized in that: described center ring comprises ring body, the end of described ring body radially extends to form the engaging piece for engaging with ring gear and sun gear.
3. according to claim 2ly all carrying planetary reducer, it is characterized in that: described ring body is also provided with the stop part for keeping the axial clearance between planet wheel and engaging piece.
4. according to claim 1ly all carry planetary reducer, it is characterized in that: be provided with between described center ring and planet wheel shaft and all carry bearing.
5. according to claim 1ly all carry planetary reducer, it is characterized in that: described casing comprises main tank and is connected to the input shaft-cup at main tank two ends and exports shaft-cup; Described main tank is fixedly connected with ring gear; Described input shaft-cup is removably connected with main tank and is provided with the input shaft bore for passing for input shaft; Described output shaft-cup is removably connected with main tank and is provided with the output shaft hole for passing for output shaft.
6. according to claim 5ly all carry planetary reducer, it is characterized in that: described main tank and ring gear one-body molded.
7. according to any one of claim 1 to 6, all carry planetary reducer, it is characterized in that: described planetary gear train comprises one-level train and secondary train, described one-level train is connected by train transmission shaft with secondary train; Also be provided with the retainer for supporting wheel systems transmission shaft in described casing, the side of described retainer is fixedly connected with cabinet wall and is provided with the train transmission axis hole for passing for train transmission shaft.
8. according to claim 7ly all carry planetary reducer, it is characterized in that: described one-level train is provided with three planet wheels be uniformly distributed circumferentially altogether, described secondary train is provided with four planet wheels be uniformly distributed circumferentially altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510390066.0A CN105003603A (en) | 2015-07-06 | 2015-07-06 | Load-sharing planetary reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510390066.0A CN105003603A (en) | 2015-07-06 | 2015-07-06 | Load-sharing planetary reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105003603A true CN105003603A (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510390066.0A Pending CN105003603A (en) | 2015-07-06 | 2015-07-06 | Load-sharing planetary reducer |
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| CN (1) | CN105003603A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523672A (en) * | 2016-12-01 | 2017-03-22 | 徐州科源液压股份有限公司 | Rear axle one-piece type speed reducer |
| CN111022623A (en) * | 2019-10-12 | 2020-04-17 | 重庆大学 | Planet carrier structure with flexible floating and load balancing functions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3923430A1 (en) * | 1989-07-15 | 1991-01-31 | Battenfeld Extrusionstech | Spur for planetary wheel gears - especially consists of two main annular wheel parts with slanting teeth |
| CN2334955Y (en) * | 1998-01-20 | 1999-08-25 | 张宪英 | Oil film floating load-balancing planetary reducer |
| WO2003052293A1 (en) * | 2001-12-14 | 2003-06-26 | Micromotion Gmbh | Micro gear system operating according to the voltage ripple principle with hollow shafts |
| CN202338604U (en) * | 2011-11-18 | 2012-07-18 | 金建光 | Secondary planetary speed reducer |
| CN103791034A (en) * | 2012-10-30 | 2014-05-14 | 吴小杰 | Two-stage planetary wind power speed increasing gearbox with bearings lubricated by grease |
| CN103883681A (en) * | 2014-03-22 | 2014-06-25 | 浙江海天机械有限公司 | Improvement in planet final drive of tractor |
-
2015
- 2015-07-06 CN CN201510390066.0A patent/CN105003603A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3923430A1 (en) * | 1989-07-15 | 1991-01-31 | Battenfeld Extrusionstech | Spur for planetary wheel gears - especially consists of two main annular wheel parts with slanting teeth |
| CN2334955Y (en) * | 1998-01-20 | 1999-08-25 | 张宪英 | Oil film floating load-balancing planetary reducer |
| WO2003052293A1 (en) * | 2001-12-14 | 2003-06-26 | Micromotion Gmbh | Micro gear system operating according to the voltage ripple principle with hollow shafts |
| CN202338604U (en) * | 2011-11-18 | 2012-07-18 | 金建光 | Secondary planetary speed reducer |
| CN103791034A (en) * | 2012-10-30 | 2014-05-14 | 吴小杰 | Two-stage planetary wind power speed increasing gearbox with bearings lubricated by grease |
| CN103883681A (en) * | 2014-03-22 | 2014-06-25 | 浙江海天机械有限公司 | Improvement in planet final drive of tractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523672A (en) * | 2016-12-01 | 2017-03-22 | 徐州科源液压股份有限公司 | Rear axle one-piece type speed reducer |
| CN111022623A (en) * | 2019-10-12 | 2020-04-17 | 重庆大学 | Planet carrier structure with flexible floating and load balancing functions |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151028 |