CN204828542U - Differential planet gear - Google Patents
Differential planet gear Download PDFInfo
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- CN204828542U CN204828542U CN201520573620.4U CN201520573620U CN204828542U CN 204828542 U CN204828542 U CN 204828542U CN 201520573620 U CN201520573620 U CN 201520573620U CN 204828542 U CN204828542 U CN 204828542U
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Abstract
The utility model discloses a differential planet gear, including frame, one -level ring gear, secondary inner gear ring, input shaft, output shaft, centre wheel, planet wheel, planet carrier, its characterized in that: the centre wheel divide into one -level centre wheel and second grade centre wheel, fixes on the input shaft inclusive AND input shaft respectively and makes whole, the planet wheel divide into one -level planet wheel and secondary planet gear, one -level planet wheel meshes with one -level centre wheel, one -level ring gear simultaneously, constitutes one -level deceleration system, secondary planet gear meshes simultaneously with second grade centre wheel, secondary inner gear ring and constitutes second grade deceleration system, one -level planet wheel, the secondary planet gear planet carrier that shares, secondary inner gear ring and output shaft fixed connection. The utility model discloses except that the advantage that has NGW type and NGWN type planet gear, have still simultaneously that simple structure, small, light in weight, bearing capacity are strong, long service life, the manufacturing's of being convenient for an advantage.
Description
Technical field
The utility model relates to the mechanical reducer transmitting motion and power, a kind of differential planetary retarder specifically.
Background technique
Aborning adopted type more current than planetary reducer mainly multistage NGW type planetary reducer and NGWN type planetary reducer two kinds at a high speed.The single-stage driving of NGW type planetary reducer is less, generally between 1.13 ~ 13.7, conventional between 2.7 ~ 9.Want to obtain large reduction speed ratio and can only increase progression, but along with the increase of progression, the structure of retarder will become complicated, and volume increase, weight and manufacturing cost also increase thereupon.So multistage NGW type planetary reducer is not the optimal selection of High-Speed Ratio Reducer.Although NGWN type planetary reducer structure is simple, single-stage speed reducing is higher, is generally less than 500, conventional between 20 ~ 100.But its planetary pinion is duplicate gear because the planetary pinion of planetary reducer be generally two and more than, duplicate gear as planetary pinion give manufacture and installation bring difficulty, manufacturability is poor.So NGWN type planetary reducer neither the optimal selection of High-Speed Ratio Reducer.
Summary of the invention
The purpose of this utility model is the technical problem existed to solve above-mentioned planetary reducer, a kind of differential planetary retarder is provided, this retarder is under the prerequisite possessing above-mentioned NGW type and NGWN type planetary reducer advantage, also have that structure is simple, volume is little simultaneously, lightweight, bearing capacity strong, is convenient to the advantage of manufacturing.
Realizing the technical solution of the utility model is: a kind of differential planetary retarder, comprises support, one-level ring gear, secondary ring gear, input shaft, output shaft, central gear, planet wheel, planet carrier; Described central gear is divided into primary centre to take turns and secondary center wheel, is separately fixed on input shaft or with input shaft and makes entirety; Described planet wheel is divided into primary planet to take turns and secondary planet wheel, and described primary planet wheel is taken turns with primary centre, one-level ring gear engages simultaneously, composition primary speed-down system; Described secondary planet wheel is taken turns with secondary center, secondary ring gear engages simultaneously and forms double reduction system; Described primary planet wheel, secondary planet wheel common planet carrier; Described secondary ring gear is fixedly connected with output shaft.
The primary planet wheel of described primary speed-down system is taken turns with the secondary planet of double reduction system and is respectively more than one, and one_to_one corresponding.
The primary planet wheel of described primary speed-down system is taken turns with the secondary planet of double reduction system and is preferably respectively three, four, five or six, and one_to_one corresponding.
The reduction speed ratio of described primary speed-down system is not identical with the reduction speed ratio of double reduction system.
Described one-level ring gear is fixed on support.
Described secondary ring gear and output shaft are fixed.
Described output shaft bearing is positioned on support, freely can rotate on support.
The planet wheel of described primary speed-down system and the corresponding row star-wheel bearing of double reduction system are positioned on same planet wheel shaft, freely can rotate on planet wheel shaft.
Described planet carrier comprises left lateral carrier and right lateral carrier and is fixedly connected or makes overall planet carrier; Described planet carrier bearing is positioned on support, one-level ring gear, output shaft, secondary ring gear one of them or two parts, freely can rotate on support, one-level ring gear, output shaft, secondary ring gear one of them or two parts.
Described output shaft is fixedly connected with output optical axis, one of spline or coupling.
The beneficial effects of the utility model are:
1, because single input gear being become coaxial two input gears, input power being shunted, reduces the specific power of input gear, improve the working life of input gear, thus improve the working life of complete machine.
2, because double-planetary gear being separated into two single gears, avoiding duplicate gear as planetary processing and assembling difficulty, solving the problem of manufacturability difference.
3, because utilizing a double reduction to slow down than the different differential produced, a wide range of reduction speed ratio can be formed by simple same structure form.The reduction speed ratio of one-level differential planetary retarder is in 10 ~ 5000 scopes.Avoiding NGW planetary reducer is the drawback that acquisition big retarding ratio adopts multi-stage speed-reducing to cause.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation sketch of the present utility model;
Fig. 2 is the utility model example structure schematic diagram.
Number in the figure: 1-support, 2-one-level ring gear, 3-secondary ring gear, 4-output shaft, 5-output gear, 6-primary centre is taken turns, 7-secondary center is taken turns, 8-primary planet is taken turns, and 9-secondary planet is taken turns, 10-planet carrier, 11-planet wheel shaft, 12-input shaft, 13-left lateral carrier, 14-right lateral carrier.
Embodiment
As shown in Figure 1 and Figure 2, a kind of differential planetary retarder (Differentialplanetarygearreducer, english abbreviation DPG) comprises support 1, one-level ring gear 2, secondary ring gear 3, input shaft 12, output shaft 4, central gear, planet wheel, planet carrier 10; Described central gear is divided into primary centre to take turns 6 and secondary center wheel 7, is separately fixed on input shaft 12; Described planet wheel is divided into primary planet to take turns 8 and secondary planet wheel 9, and described primary planet wheel 8 and primary centre take turns 6, one-level ring gear 2 engages simultaneously, form primary speed-down system; Described secondary planet wheel 9 and secondary center take turns 7, secondary ring gear 3 engages simultaneously and forms double reduction system; Described secondary ring gear 3 is fixedly connected with output shaft 4.The primary planet wheel 8 of described primary speed-down system is taken turns 9 with the secondary planet of double reduction system and is respectively three, and one_to_one corresponding.The reduction speed ratio of described primary speed-down system is not identical with the reduction speed ratio of double reduction system, and differential planetary retarder utilizes differential deceleration of the unequal generation of the velocity ratio of two-stage planetary reduction gear just.Described one-level ring gear 2 is fixed on support 1.Described secondary ring gear 3 is fixed with output shaft 4.Described output shaft 4 bearing is positioned on support 1, freely can rotate on support 1.The planet wheel of described primary speed-down system and the corresponding row star-wheel bearing of double reduction system are positioned on same planet wheel shaft 11, freely can rotate on planet wheel shaft 11.Described planet carrier 10 comprises left lateral carrier 13 and right lateral carrier 14 and is fixedly connected or makes overall planet carrier; Described planet carrier 10 bearing is positioned on support 1, freely can rotate on support 1.Described output shaft 4 is fixedly connected with output gear 5.
The utility model, by selecting following multiple combination mode, can form multiple embodiment: 1, central gear and input shaft 12 are fixed or integral manufacturing; 2, the left lateral carrier 13 of described planet carrier 10 and right lateral carrier 14 are fixedly connected or make overall planet carrier; 3, planet carrier 10 can be fixed on support 1, one-level ring gear 2, output shaft 4, one of them part of secondary ring gear 3 by independent bearing, also can be fixed on support 1 and secondary ring gear 3 with bearing simultaneously, on support 1 and output shaft 4, on one-level ring gear 2 and secondary ring gear 3, one-level ring gear 2 and output shaft 4 also freely rotate, totally 8 kinds of means of fixation; 4, output shaft 4 is fixedly connected with output optical axis, one of spline or coupling.
Power inputs from input shaft 12, exports from output shaft 4; The utility model only needs two-stage planetary reduction gear just can realize the various reduction speed ratio between ± 10 ~ 5000, and transmission efficiency is higher; Making, installation, maintenance are conveniently, with low cost; Particularly comparatively large in reduction speed ratio, need more can embody its superiority during the velocity ratio that could realize with more than three grades and three grades NGW retarders.
Claims (10)
1. a differential planetary retarder, comprises support, one-level ring gear, secondary ring gear, input shaft, output shaft, central gear, planet wheel, planet carrier; It is characterized in that: described central gear is divided into primary centre to take turns and secondary center wheel, is separately fixed on input shaft or with input shaft and makes entirety; Described planet wheel is divided into primary planet to take turns and secondary planet wheel, and described primary planet wheel is taken turns with primary centre, one-level ring gear engages simultaneously, composition primary speed-down system; Described secondary planet wheel is taken turns with secondary center, secondary ring gear engages simultaneously and forms double reduction system; Described primary planet wheel, secondary planet wheel common planet carrier; Described secondary ring gear is fixedly connected with output shaft.
2. differential planetary retarder according to claim 1, is characterized in that: the primary planet wheel of described primary speed-down system is taken turns with the secondary planet of double reduction system and is respectively more than one, and one_to_one corresponding.
3. differential planetary retarder according to claim 1 or 2, is characterized in that: the primary planet wheel of described primary speed-down system is taken turns with the secondary planet of double reduction system and is respectively three, four, five or six, and one_to_one corresponding.
4. differential planetary retarder according to claim 1 or 2, is characterized in that: the reduction speed ratio of described primary speed-down system is not identical with the reduction speed ratio of double reduction system.
5. differential planetary retarder according to claim 1, is characterized in that: described one-level ring gear is fixed on support.
6. differential planetary retarder according to claim 1, is characterized in that: described secondary ring gear and output shaft are fixed.
7. differential planetary retarder according to claim 6, is characterized in that: described output shaft bearing is positioned on support, freely can rotate on support.
8. differential planetary retarder according to claim 1 or 2, is characterized in that: the planet wheel of described primary speed-down system and the corresponding row star-wheel bearing of double reduction system are positioned on same planet wheel shaft, freely can rotate on planet wheel shaft.
9. differential planetary retarder according to claim 1, is characterized in that: described planet carrier comprises left lateral carrier and right lateral carrier and is fixedly connected or makes overall planet carrier; Described planet carrier bearing is positioned on support, one-level ring gear, output shaft, secondary ring gear one of them or two parts, freely can rotate on support, one-level ring gear, output shaft, secondary ring gear one of them or two parts.
10. differential planetary retarder according to claim 1,6 or 7, is characterized in that: described output shaft is fixedly connected with output optical axis, one of spline or coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520573620.4U CN204828542U (en) | 2015-08-03 | 2015-08-03 | Differential planet gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520573620.4U CN204828542U (en) | 2015-08-03 | 2015-08-03 | Differential planet gear |
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| CN204828542U true CN204828542U (en) | 2015-12-02 |
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| CN201520573620.4U Active CN204828542U (en) | 2015-08-03 | 2015-08-03 | Differential planet gear |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989803A (en) * | 2015-08-03 | 2015-10-21 | 许奉成 | Differential planetary reducer |
| CN105893710A (en) * | 2016-05-09 | 2016-08-24 | 西北工业大学 | Method for calculating geometric return difference of NGWN planetary gear train |
| CN107061637A (en) * | 2017-03-10 | 2017-08-18 | 安徽理工大学 | A kind of planetary transmission system of the double uniform flow dividing structure in parallel of planetary gear |
| WO2020238816A1 (en) * | 2019-05-28 | 2020-12-03 | 周承岗 | Co-located differential reducer |
-
2015
- 2015-08-03 CN CN201520573620.4U patent/CN204828542U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989803A (en) * | 2015-08-03 | 2015-10-21 | 许奉成 | Differential planetary reducer |
| CN105893710A (en) * | 2016-05-09 | 2016-08-24 | 西北工业大学 | Method for calculating geometric return difference of NGWN planetary gear train |
| CN105893710B (en) * | 2016-05-09 | 2019-02-22 | 西北工业大学 | NGWN planetary gear train geometric lost motion calculation method |
| CN107061637A (en) * | 2017-03-10 | 2017-08-18 | 安徽理工大学 | A kind of planetary transmission system of the double uniform flow dividing structure in parallel of planetary gear |
| WO2020238816A1 (en) * | 2019-05-28 | 2020-12-03 | 周承岗 | Co-located differential reducer |
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| C14 | Grant of patent or utility model | ||
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