CN108757848A - RV type planet gear speed reducer with small tooth difference - Google Patents
RV type planet gear speed reducer with small tooth difference Download PDFInfo
- Publication number
- CN108757848A CN108757848A CN201810981756.7A CN201810981756A CN108757848A CN 108757848 A CN108757848 A CN 108757848A CN 201810981756 A CN201810981756 A CN 201810981756A CN 108757848 A CN108757848 A CN 108757848A
- Authority
- CN
- China
- Prior art keywords
- gear
- planet
- planet carrier
- supporing shell
- center
- 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.)
- Withdrawn
Links
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
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
-
- 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
- F16H1/36—Toothed gearings for conveying rotary motion with gears having orbital motion with two central gears coupled by intermeshing orbital gears
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- 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
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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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
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/323—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising eccentric crankshafts driving or driven by a gearing
-
- 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
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear
Abstract
The invention discloses a kind of RV types planet gear speed reducer with small tooth difference, including supporing shell and first planet carrier, there is the first and second internal gear between the two, the center output external tooth wheel shaft being rotatedly connected with supporing shell, first planet carrier is socketed in first and second internal gear, it is provided with the center input gear being meshed with primary planet pinion on front side of center output external tooth wheel shaft, the crank axle of primary planet pinion is connected by needle bearing with first planet carrier, the first and second internal gear and supporing shell；Sun gear on center output external tooth wheel shaft is meshed with the secondary planetary gear in supporing shell, there are the second planet carrier, the first and second external gear and the output that screw connects, the crank axle of secondary planetary gear to be connected with the second planet carrier, the first external gear, the second external gear and output by needle bearing in the ring gear of supporing shell.For the transmission ratio of the present invention up to thousands of, max. output torque reaches tens thousand of oxen, is highly suitable for the occasion of heavy-duty low-speed large torque.
Description
Technical field
The present invention relates to retarder technical fields, more particularly, to a kind of RV types planet gear speed reducer with small tooth difference.
Background technology
RV retarders are because its is small, light-weight, gear range is big, efficient, stable drive, positioning accuracy height etc. one
Number of advantages is widely used in the fields such as industrial robot, medical treatment detection device, lathe, satellite receiving system.RV retarders are logical
Often and servo motor match, when load it is larger, more large torque need to be transmitted when, simply raising servo motor power very not
Economy, therefore can improve output torque by selecting suitable retarder in certain speed range.
Invention content
Present invention aims at a kind of large torque of offer, the RV type planet gear speed reducer with small tooth difference of high reduction ratio.
The present invention can take following technical proposals：
RV types planet gear speed reducer with small tooth difference of the present invention, including supporing shell, the supporing shell front end are fixed with
First planet carrier, is provided with the first internal gear, secondary annulus between the first planet carrier and supporing shell, in described first
Output external tooth wheel shaft in center is socketed at gear, secondary annulus center, the center output external tooth wheel shaft passes through bearing and branch
Support shell, first planet carrier are rotatedly connected, and are provided with center input gear on front side of center output external tooth wheel shaft, the center is defeated
Enter gear and three primary planet pinions being uniformly arranged are meshed, the crank axle of each primary planet pinion passes through needle roller
Bearing is sequentially connected with first planet carrier, the first internal gear, secondary annulus and supporing shell, and the first internal gear, in second
Gear squeezes needle bearing by the crank axle of primary planet pinion and engages operating with center output external tooth wheel shaft；Center output is outer
The sun gear being arranged on gear shaft is meshed with four secondary planetary gears being uniformly arranged in supporing shell, after supporing shell
The second planet carrier, the first external gear, the second external gear and the output of screw connection are provided in the connected ring gear in end, it is each
The crank axle of the secondary planetary gear passes through needle bearing and the second planet carrier, the first external gear, the second external gear and output
Part is connected, and the second planet carrier and output are rotatedly connected by bearing and ring gear, first external gear, the second external gear
Needle bearing is squeezed by the crank axle of secondary planetary gear, and operating is engaged with ring gear.
The kidney-shaped with crank axle elastic conjunction is offered at the center of the primary planet pinion and secondary planetary gear
Multiple lightening holes are distributed with around the kidney-shaped mounting hole in mounting hole.
Steel stiffening ring is both provided in the supporing shell and first planet carrier.
The supporing shell and the junction of first planet carrier, ring gear are both provided with sealing ring.
It is provided with abutment sleeve on the outside of the screw.
RV types planet gear speed reducer with small tooth difference provided by the invention, including it is arranged in series in supporing shell front and back stages RV
Deceleration mechanism, every grade of RV decelerations mechanism are subtracted by preceding cylindrical gear planet deceleration mechanism and posterior small teeth number difference planet gear
Fast mechanism is constituted, and by the forward and backward grade reduction ratio of reasonable distribution, transmission ratio of the invention can reach thousands of, max. output torque height
Up to tens thousand of oxen, it is highly suitable for the occasion of heavy-duty low-speed large torque.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the structural schematic diagram of primary planet pinion in Fig. 1.
Fig. 3 is the structural schematic diagram of secondary planetary gear in Fig. 1.
Fig. 4 is the structural schematic diagram with the matched crank axle of I and II planetary gear.
Specific implementation mode
RV types planet gear speed reducer with small tooth difference of the present invention, including the two-stage RV decelerations mechanism that is arranged in series, often
Grade RV decelerations mechanism is made of preceding cylindrical gear planet deceleration mechanism and posterior small teeth number difference planet gear deceleration mechanism.
Specifically, as shown in Figure 1, including supporing shell 1,1 front end of supporing shell is fixed with first planet carrier 2, the first row
The first internal gear 3, secondary annulus 4, the first internal gear 3,4 center of secondary annulus are provided between carrier 2 and supporing shell 1
Place is socketed with center output external tooth wheel shaft 5, and center exports external tooth wheel shaft 5 and passes through 2 turns of bearing and supporing shell 1, first planet carrier
Dynamic to be connected, the front side of center output external tooth wheel shaft 5 is provided with center input gear 6, and center input gear 6 and three are uniformly arranged
Primary planet pinion 7 be meshed, the crank axle Q of each primary planet pinion 7 by needle bearing Z and first planet carrier 2,
First internal gear 3, secondary annulus 4 and supporing shell 1 are sequentially connected, and the first internal gear 3, secondary annulus 4 pass through level-one
The crank axle Q bias of planetary gear 7 squeezes corresponding needle bearing Z and engages operating with center output external tooth wheel shaft 5；Center exports
External tooth wheel shaft 5 extends back and is provided with sun gear 8, sun gear 8 and four secondary planets being uniformly arranged in supporing shell 1
Gear 9 is meshed, and the second planet carrier 12, first of the connection of screw 11 is provided in the connected ring gear 10 in 1 rear end of supporing shell
The crank axle Q of external gear 13, the second external gear 14 and output 15, each secondary planetary gear 9 passes through needle bearing Z and
Two planet carriers 12, the first external gear 13, the second external gear 14 are connected with output 15, and the second planet carrier 12 and output 15 are logical
It crosses bearing to be rotatedly connected with ring gear 10, the crank axle Q that the first external gear 13, the second external gear 14 pass through secondary planetary gear 9
Bias squeezes corresponding needle bearing Z and engages operating with ring gear 10.
As shown in Figure 2,3, primary planet pinion 7 and secondary planetary gear 9 are all made of aluminum alloy materials making, the center
Kidney-shaped mounting hole M is offered respectively, and kidney-shaped mounting hole M is used to carry out elastic conjunction with the crank axle Q of structure as shown in Figure 4, get rid of
Traditional spline pair connection type is abandoned, difficulty of processing is reduced, simplifies process tool and technique, improves assembly firmness；
Meanwhile multiple lightening hole N are also distributed with around each kidney-shaped mounting hole M, can further mitigate gear gross weight, save material at
This.For secondary planetary gear 9, the thinning processing in middle part has also been carried out.Since aluminum alloy material is partially soft, to avoid in first and second
Gear 3,4 collides with when moving, and is respectively equipped with groove in first planet carrier 2 and supporing shell 1, equal interference in each groove
There are one steel stiffening rings 16 to form annular convex platform for pressing installation, on the one hand can play the role of axially position to internal gear, separately
On the one hand it can collide with to avoid internal gear, wear planet carrier.In order to form excellent sealing, in supporing shell 1 and first planet carrier
2, the junction of ring gear 10 is both provided with sealing ring 17.11 outside of screw is provided with sleeve 16, for the second planet carrier 12
Axially position is carried out with output 15.
In use, power input transfers torque to center input gear 6 by the connection of inside and outside spline, center inputs tooth
The first order that level-one RV retarders are completed in wheel 6 and three intermeshing movements of primary planet pinion 7 in positive triangle distribution is slowed down；
Under the drive of primary planet pinion 7, coupled crank axle Q makees circumferential movement around own axes therewith, while driving the
One, two internal gears 3,4 engage the second level few teeth difference deceleration that 1 grade of RV retarder is completed in operating with center output external tooth wheel shaft 5.In
Heart output external tooth wheel shaft 5 transfers torque to sun gear 8, sun gear 8 and four square distributions by the connection of inside and outside spline
Secondary planetary gear 9 intermeshing movement complete two level RV retarders the first order slow down；In the drive of secondary planetary gear 9
Under, coupled crank axle Q makees circumferential movement around own axes therewith, while driving the first and second external gear 13,14 and internal tooth
10 engagement operating of circle, in above-mentioned carry out power transmission, the second not only rotation of planetary gear 9, while also as the second planet carrier
12 make revolution motion, since the second planet carrier 12, the first external gear 13, the second external gear 14 and output 15 pass through 18 phase of screw
Even, therefore, the second level that output 15 can complete two level RV retarders as output end with planet carrier, external gear operating is few
Tooth subtractive speed.
Claims (5)
1. a kind of RV types planet gear speed reducer with small tooth difference, it is characterised in that：Including supporing shell, the supporing shell front end is solid
It is connected with first planet carrier, is provided with the first internal gear, secondary annulus between the first planet carrier and supporing shell, described
Output external tooth wheel shaft in center is socketed at one internal gear, secondary annulus center, the center output external tooth wheel shaft passes through bearing
It is rotatedly connected with supporing shell, first planet carrier, center input gear is provided on front side of center output external tooth wheel shaft, in described
Heart input gear and three primary planet pinions being uniformly arranged are meshed, and the crank axle of each primary planet pinion passes through
Needle bearing is sequentially connected with first planet carrier, the first internal gear, secondary annulus and supporing shell, and the first internal gear,
Two internal gears squeeze needle bearing by the crank axle of primary planet pinion and engage operating with center output external tooth wheel shaft；Center is defeated
The sun gear being arranged on gear shaft out is meshed with four secondary planetary gears being uniformly arranged in supporing shell, supporting shell
The second planet carrier, the first external gear, the second external gear and the output of screw connection are provided in the connected ring gear in body rear end,
The crank axle of each secondary planetary gear by needle bearing and the second planet carrier, the first external gear, the second external gear and
Output is connected, and the second planet carrier and output are rotatedly connected by bearing and ring gear, first external gear, outside second
Gear squeezes needle bearing by the crank axle of secondary planetary gear and engages operating with ring gear.
2. RV types planet gear speed reducer with small tooth difference according to claim 1, it is characterised in that：The primary planet pinion
With offer the kidney-shaped mounting hole with crank axle elastic conjunction at the center of secondary planetary gear, around the kidney-shaped mounting hole
Multiple lightening holes are distributed with.
3. RV types planet gear speed reducer with small tooth difference according to claim 1, it is characterised in that：The supporing shell and
Steel stiffening ring is both provided on one planet carrier.
4. RV types planet gear speed reducer with small tooth difference according to claim 1, it is characterised in that：The supporing shell and the
One planet carrier, ring gear junction be both provided with sealing ring.
5. RV types planet gear speed reducer with small tooth difference according to claim 1, it is characterised in that：Setting on the outside of the screw
There is abutment sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981756.7A CN108757848A (en) | 2018-08-27 | 2018-08-27 | RV type planet gear speed reducer with small tooth difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981756.7A CN108757848A (en) | 2018-08-27 | 2018-08-27 | RV type planet gear speed reducer with small tooth difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757848A true CN108757848A (en) | 2018-11-06 |
Family
ID=63966951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810981756.7A Withdrawn CN108757848A (en) | 2018-08-27 | 2018-08-27 | RV type planet gear speed reducer with small tooth difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757848A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620133Y (en) * | 2002-04-25 | 2004-06-09 | 何卫东 | Double crank ring-plate type cycloid pinwheel planetary speed reducer |
| CN101939560A (en) * | 2008-02-13 | 2011-01-05 | 纳博特斯克株式会社 | Eccentric speed reducer |
| CN105020344A (en) * | 2014-04-21 | 2015-11-04 | 天津职业技术师范大学 | Precision 2K-V transmission device |
| CN207178592U (en) * | 2016-05-06 | 2018-04-03 | 安徽聚隆机器人减速器有限公司 | A kind of RV reductors |
| CN207485974U (en) * | 2017-11-08 | 2018-06-12 | 广西柳钢大菱电动汽车制造有限公司 | A kind of motor reducer |
| CN208719271U (en) * | 2018-08-27 | 2019-04-09 | 郑州飞机装备有限责任公司 | RV type planet gear speed reducer with small tooth difference |
-
2018
- 2018-08-27 CN CN201810981756.7A patent/CN108757848A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620133Y (en) * | 2002-04-25 | 2004-06-09 | 何卫东 | Double crank ring-plate type cycloid pinwheel planetary speed reducer |
| CN101939560A (en) * | 2008-02-13 | 2011-01-05 | 纳博特斯克株式会社 | Eccentric speed reducer |
| CN105020344A (en) * | 2014-04-21 | 2015-11-04 | 天津职业技术师范大学 | Precision 2K-V transmission device |
| CN207178592U (en) * | 2016-05-06 | 2018-04-03 | 安徽聚隆机器人减速器有限公司 | A kind of RV reductors |
| CN207485974U (en) * | 2017-11-08 | 2018-06-12 | 广西柳钢大菱电动汽车制造有限公司 | A kind of motor reducer |
| CN208719271U (en) * | 2018-08-27 | 2019-04-09 | 郑州飞机装备有限责任公司 | RV type planet gear speed reducer with small tooth difference |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181106 |
|
| WW01 | Invention patent application withdrawn after publication |