CN205991145U - A kind of differential gearing decelerator - Google Patents
A kind of differential gearing decelerator Download PDFInfo
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- CN205991145U CN205991145U CN201620880010.3U CN201620880010U CN205991145U CN 205991145 U CN205991145 U CN 205991145U CN 201620880010 U CN201620880010 U CN 201620880010U CN 205991145 U CN205991145 U CN 205991145U
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- gear
- group
- decelerator
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Abstract
The utility model discloses a kind of differential gearing decelerator.It is characterized in that, by input gear group and two groups of output gear group, totally four gears form described decelerator, respectively intermeshing one group of internal gear and external gear.The internal gear of described input gear group or external gear can be respectively as power intakes, and corresponding output gear group external gear or internal gear are as output gear.When described input gear group one is as input, then non-output gear is fixedly connected with output gear for another.Described input gear group is different with output gear group pitch diameter, by gear between cooperation realize big retarding than slow down.Described reducer structure is simple, and compact in design does not have compliant member, good rigidity, and speed reducing ratio is big.
Description
Technical field
The present invention relates to mechanical engineering field, particularly to mechanical reduction transmission field.
Background technology
Decelerator is one of conventional assembly in machine driving.At present, main groups of reducers has planetary gear speed-reduction
A few class decelerators such as device, RV decelerator harmonic decelerator.Wherein, planetary reducer stable transmission, driving torque is big, no
Compliant member, can realize slowing down and speedup simultaneously, but decelerator volume is larger, and speed reducing ratio improves difficulty；RV decelerator slows down
Ratio is larger, stable transmission, but drive disk assembly is more, and system is complex；Harmonic speed reducer gear ratio is big, and structure is simple, but tool
There is compliant member, be on the one hand unfavorable for controlling, another aspect lifetime of system is shorter.
Content of the invention
For solving the problems, such as gear big retarding ratio, long-life, the present invention provides a kind of decelerator without compliant member, and this subtracts
Fast device realizes speed reducing ratio control by controlling pitch circle diameter.
Decelerator of the present invention at least includes one group of input gear group, one group of output gear group and a ball axle
Hold.
Described input gear group includes at least one gear or intermeshing first gear and second gear；Output gear
Group includes intermeshing 3rd gear and the 4th gear.
Described first gear is external gear, and second gear is internal gear, and the 3rd gear is external gear, and the 4th gear is internal tooth
Wheel.
Described first gear is meshed with second gear, and it is poor to have certain number of teeth.
Described 3rd gear is engaged with the 4th gear, and it is poor to have certain number of teeth.
Described 3rd gear is poor with the pitch diameter of the 4th gear and the poor phase of pitch diameter of first gear and second gear
With.
Described first gear or second gear can be used as power input shafts.
When described first gear is power intake, ball bearing is located in first gear, coaxial with first gear；Second
Gear is fixing shaft gear.
When described second gear is power intake, ball bearing is located in second gear, coaxial with second gear；First
Gear is fixing shaft gear.
When described 3rd gear is clutch end, the 4th gear is coaxial with the input end gear of input gear group and mutually solid
Even.
When described 4th gear is clutch end, the 3rd gear is coaxial with the input end gear of input gear group and mutually solid
Even.
The present invention realizes different size of deceleration by controlling the pitch diameter of first gear, second gear and the 3rd gear
Than.
The main advantages of the present invention it is as follows.
Described decelerator does not adopt compliant member, is easy to the precise control of transmission process, and improves the decelerator life-span.
Described reducer structure is compact, small volume.
Described decelerator carries out speed reducing ratio control by controlling pitch diameter, and design space is big, and speed reducing ratio is big.
Brief description
Fig. 1 is the decelerator first embodiment profile according to present invention design.
Fig. 2 is the decelerator second embodiment profile according to present invention design.
Fig. 3 is the first gear diameter-gear ratio change curve under canonical parameter under first embodiment.
Fig. 4 is the second gear diameter-gear ratio change curve under canonical parameter under first embodiment.
Fig. 5 is the three gear diameters-gear ratio change curve under canonical parameter under first embodiment.
Specific embodiment
Fig. 1 is first embodiment of the present invention.With reference to Fig. 1, the decelerator described in the present embodiment includes input shaft 1, rolling
Pearl bearing 2, external gear 3, internal gear 4, fix bar 5, internal gear 6 and external gear 7.
Wherein, input shaft 1, ball bearing 2, external gear 3 and external gear 7 are coaxial.Input shaft 1 is located in ball bearing 2,
External gear 3 is connected with ball bearing 2.Input shaft 1 is connected with outer eccentric wheel, and under Motor drive, input shaft 1 drives external gear
3 rotations.By ball bearing 2, external gear 3 can freely rotate around input shaft 1.
Internal gear 4 is fast pulley, and to have a small amount of tooth poor with external gear 3, and two gears are meshed.Limited by internal gear 4
System, the eccentric motion radius of input shaft 1 is the semidiameter of internal gear 4 and external gear 3.
Under the driving of input motor, external gear 3 rotates around internal gear 4.There is certain tooth poor between due to two gears, therefore outward
Gear 3, while the axis around internal gear 4 revolves round the sun, has certain spin velocity, spin velocity size and external gear 3
Tooth difference between internal gear 4 is relevant.
Described fixing connecting rod 5 has at least 3, and one end of each fixing connecting rod 5 is fixed on external gear 3, the other end
It is fixed on external gear 7.By connection rod set 5 so that external gear 7 and external gear 3 relative position, attitude are fixed and two gears are same
Axle.Under the drive of external gear 3, external gear 7 has and external gear 3 identical revolution angular velocity and spin velocity.
External gear 7 is located above external gear 3, and to have a small amount of tooth poor with external gear 3.
Internal gear 6 is located at outside external gear 7, and coaxial with internal gear 4.
Described internal gear 6 is power output shaft.
Internal gear 6 and external gear 7 have that certain tooth is poor, and the tooth of the tooth difference of two gears and external gear 3 and internal gear 4
Difference is identical.Therefore, it is ensured that being meshed with external gear 7 when external gear 7 revolves round the sun around internal gear 4.
Because external gear 7 has certain rotation while revolution, poor by the reasonable selection number of teeth, internal gear 6 is in external tooth
Start under the driving of wheel 7 to rotate, thus exporting power.
With reference to Fig. 1, if the diameter of gear 3, gear 4, gear 6 and gear 7 is respectivelyd 3、d 4、d 6Withd 7.External gear 3 has
Revolution speedAnd rotational velocity, whereinFor input speed.External gear 7 has revolution speedAnd rotational velocity, interior
Gear 4 is fixed gear, and rotating speed is 0, and internal gear 6 is output gear, and only having rotating speed isRevolution speed.
Because gear 3, gear 4 engage each other, modulus is identical；Gear 6 and gear 7 engage each other, and modulus is identical.But gear
6 can be different from the modulus of gear 4.Respectively engage each other the number of teeth, diameter and the Zhou Changwei linear relationship of gear.Use diameter generation herein
For the number of teeth, then number of gear teeth difference directly translates into diameter difference.?In time, external gear 3 rotates a circle around internal gear 4, reaches
Starting point, now has：
(1)
(2)
Because external gear 7 and external gear 3 have identical revolution and spin velocity, that is,
(3)
(4)
And now internal gear 6 rotating speed is, have
(5)
Had by geometrical relationship again：
(6)
Simultaneous is above-mentioned various, can solve：
(7)
This is decelerator speed reducing ratio computing formula of the present invention.
According to the embodiment shown in Fig. 1, take gear 3 diameter 95, gear 4 diameter 100, gear 6 diameter 66, now slow down
Than for 1881；During adjustment gear 3 a diameter of 98, keep remaining gear constant, then speed reducing ratio is 4851.Limiting case, gear 6 is straight
Footpath is identical with gear 4, then gear 7 does not rotate, and speed reducing ratio is believed that as infinity.
Fig. 2 is second embodiment of the present invention.In the present embodiment, described decelerator includes fixing axle 1, ball bearing
2nd, external gear 3, internal gear 4, internal gear 5, external gear 6 and ring flange.
Input shaft 1 and ball bearing 2 and internal gear 4 are coaxial.Input shaft 1 is located in ball bearing 2, internal gear 4 and ball
Bearing 2 is connected.
External gear 3 is located at the inner side of internal gear 4, is fast pulley.It is poor that external gear 3 and internal gear 4 have a small amount of tooth, and two
Gear is meshed.
Internal gear 4 is wheel for inputting, is connected with outer eccentric wheel by input shaft 1, under outside motor belt motor is moved, internal gear 4
Rotate around external gear 3.
By ball bearing 2, internal gear 4 can freely rotate around input shaft 1.Limited by external gear 3, input shaft 1 inclined
Heart moving radius are the semidiameter of internal gear 4 and external gear 3.
Under the driving of input motor, internal gear 4 rotates around external gear 3.There is certain tooth poor between due to two gears, thus interior
Gear 4, while the axis around external gear 3 revolves round the sun, has certain spin velocity, spin velocity size and external gear 3
Tooth difference between internal gear 4 is relevant.
Described internal gear 5 is located above internal gear 4, by ring flange 7 fixation and internal gear 4 and same with internal gear 4
Axle.Under the drive of internal gear 4, internal gear 5 has and internal gear 4 identical revolution angular velocity and spin velocity.
Described ring flange 7 is located between internal gear 4 and internal gear 5, for internal gear 4 and the internal gear 5 of being connected.
Described external gear 6 is located inside internal gear 5, and coaxial with internal gear 4.External gear 6 and internal gear 5 have a small amount of
Tooth is poor.And two gear tooth difference identical with the tooth difference of external gear 3 and internal gear 4.Therefore, public around internal gear 5 in external gear 6
Turn and during rotation it is ensured that being meshed with external gear 6.Under the driving of internal gear 5, external gear 6 starts to rotate, and exports dynamic
Power.
Described external gear 6 is power output wheel.
For the embodiment shown in Fig. 2, the solution procedure in reference implementation example 1 can be tried to achieve, and speed reducing ratio computing formula is
(8).
Claims (7)
1. differential gearing decelerator is it is characterised in that at least include one group of input gear group, one group of output gear group and a rolling
Pearl bearing, each gear train includes a drivewheel and a driven pulley, and the driven pulley of input gear group and output gear group
Drivewheel be connected.
2. according to the differential gearing decelerator described in claim 1 it is characterised in that described input gear group and output gear group
It is made up of inside and outside intermeshing one group of gear respectively；Described input gear group includes internal gear first gear and external gear second
Gear；Output gear group includes internal gear the 3rd gear and external gear the 4th gear.
3., according to the differential gearing decelerator described in claim 2, the pitch diameter difference of the 3rd gear and the 4th gear is equal to the
One gear is poor with the pitch diameter of second gear.
4., according to the differential gearing decelerator described in claim 2, when first gear is power intake, ball bearing is located at the
In one gear, coaxial with first gear, second gear is fixing shaft gear.
5., according to the differential gearing decelerator described in claim 2, when second gear is power intake, ball bearing is located at the
In two gears, coaxial with second gear, first gear is fixing shaft gear.
6. according to the differential gearing decelerator described in claim 2, when the 3rd gear is clutch end, the 4th gear and input
The input end gear of gear train is coaxial and is fixedly connected with.
7. according to the differential gearing decelerator described in claim 2, when the 4th gear is clutch end, the 3rd gear and input
The input end gear of gear train is coaxial and is fixedly connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620880010.3U CN205991145U (en) | 2016-08-15 | 2016-08-15 | A kind of differential gearing decelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620880010.3U CN205991145U (en) | 2016-08-15 | 2016-08-15 | A kind of differential gearing decelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205991145U true CN205991145U (en) | 2017-03-01 |
Family
ID=58106390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620880010.3U Expired - Fee Related CN205991145U (en) | 2016-08-15 | 2016-08-15 | A kind of differential gearing decelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205991145U (en) |
-
2016
- 2016-08-15 CN CN201620880010.3U patent/CN205991145U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 Termination date: 20190815 |