CN1020789C - Constant-power stepless speed variator - Google Patents
Constant-power stepless speed variator Download PDFInfo
- Publication number
- CN1020789C CN1020789C CN 88106928 CN88106928A CN1020789C CN 1020789 C CN1020789 C CN 1020789C CN 88106928 CN88106928 CN 88106928 CN 88106928 A CN88106928 A CN 88106928A CN 1020789 C CN1020789 C CN 1020789C
- Authority
- CN
- China
- Prior art keywords
- power
- gear
- stepless speed
- tooth difference
- speed variator
- 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 - Fee Related
Links
Images
Abstract
The present invention relates to a constant power stepless speed change mechanism. The mechanism adopts a shunting transmission method and is formed by the positive allocation of a prime mover (an electromotor or an internal combustion engine), a low power stepless speed variator (a mechanical type and an electromagnetic type) and a planetary differential mechanism. With a few teeth difference mechanism with a self-locking function, the mechanism effectively cuts off closed power in the planetary differential mechanism, increases efficiency and realizes constant power stepless speed change. The mechanism has the advantages of compact structure, stable operation, large speed change range, high mechanical efficiency, no power limitation, etc.
Description
The present invention relates to a kind of stepless speed changing mechanism, belong to the mechanical transmissioning technology field.
Constant-power stepless speed variator all has very high use value to various loads, and especially output has more superiority to slow-speed of revolution large torque.Up to now, the existing multiple mature technique of Variable Speed Technology can be for adopting, and they comprise machinery, electromagnetism, hydraulic pressure, direct current and frequency conversion etc.No matter but which kind of transmission technology all has certain narrow limitation.
Planetary cross-country power mechanism has that volume is little, in light weight, bearing capacity is big, efficient is high and advantage such as stable working, thereby is widely used in deciding biography than gearing down, and as differential gearing, the decomposition that can realize speed is with synthetic.But,, it is very limited in the dynamics application facet because planetary cross-country power mechanism inside exists circulating power.When its output speed was very low, mechanical output was extremely low, and parts depreciation is serious, thereby did not have use value.For a long time, study a kind of more perfect planetary cross-country power mechanism so that it is making a breakthrough aspect permanent power differential gearing, be an important topic in Variable Speed Technology field always.
The purpose of this invention is to provide a kind of constant-power stepless speed variator,, make the output shaft shunting of power engine, overcome the problem that has circulating power in the planetary cross-country power mechanism thereby reach by adopting the mode of shunting transmission.
Technical solution of the present invention is as follows, a kind of constant-power stepless speed variator is provided, it is connected with the output shaft of power engine, and by a cover planetary cross-country power mechanism realization speed change, the power shaft of constant-power stepless speed variator and power machine output shaft are rigidly connected and do synchronous rotation, power shaft is connected with the input component sun gear of planetary cross-country power mechanism, it is characterized in that also being equipped with on the power machine output shaft stepless speed variator, the load power of this stepless speed variator is lower than the mating power acc power, and connect a sleeve on its output member, this sleeve is connected with the input component gear of the few tooth difference mechanism with auto-lock function, and the pivoted arm of this few tooth difference mechanism output member is connected with the planet carrier of planet difference mechanism.
Below technical solution of the present invention is described further.
The present invention adopts the mode of shunting transmission to make the output shaft shunting of power engine.Be rigidly connected and do synchronous rotation with a central shaft (power shaft) and power machine output shaft.Power shaft is connected with the input component sun gear of planetary cross-country power mechanism as main through-put power axle.A low power stepless speed variator also is installed on the output shaft of power engine, and its load power only needs about 10% of mating power acc power.On the output member of this low-power continuous variable transmission, also connect a sleeve, this sleeve is enclosed within the power shaft outside, itself and power shaft are rotated on same axis, and the rotating speed of sleeve is the output speed of low-power continuous variable transmission and can changes in certain speed adjustable range.The input component central gear of a few tooth difference mechanism that has reequiped is connected with sleeve (being the speed governing axle), and the output member pivoted arm that will lack tooth difference mechanism again is connected with the planet carrier of differential attachment.Because the few tooth difference mechanism after the repacking has the function of self-locking, promptly export pivoted arm and can not reverse pumping go into, thereby the planet carrier of differential attachment is subjected to the control of few tooth difference mechanism, thereby cut off in the planetary cross-country power mechanism synthetic effectively.And the torque that the speed governing axle is transmitted only acts on frictional loss in the few tooth difference mechanism for planet carrier, the very big part power of mating power machine imports differential attachment into by power shaft, and export by output gear, because planet carrier is to be subjected to few tooth difference mechanism controls of being connected by the speed governing axle, the speed governing rotating speed of low-power continuous variable transmission has promptly been realized constant-power stepless speed change in differential attachment.
Describe embodiments of the invention in detail below in conjunction with accompanying drawing, specification of the present invention has two accompanying drawings.
Fig. 1 is the shunting drive path schematic representation of constant-power stepless speed variator involved in the present invention.
Fig. 2 is involved in the present invention through improved few tooth difference structural scheme of mechanism.
Now the meaning with number in the figure is described as follows:
1. power engine (comprising three-phase step motor or internal-combustion engine etc.)
2. low-power continuous variable transmission
3. the coupling output shaft and the power shaft of power engine (connect)
4. power shaft (central shaft)
5. sleeve (speed governing axle)
6. few tooth difference mechanism pin dish
7. few tooth difference mechanism center input gear
8. few tooth difference mechanism eccentric sleeving gear
9. the eccentric pivoted arm of few tooth difference mechanism
10. few tooth difference mechanism planet wheel
11. few tooth difference mechanism gear ring
12. planetary cross-country power mechanism sun gear
13. planetary cross-country power mechanism planet carrier
14. planetary cross-country power mechanism output gear
15. planetary cross-country power mechanism output shaft
16. eccentric bushing
17. pin.
Now the shunting drive path with constant-power stepless speed variator shown in Figure 1 is described as follows:
The power transmission:
Power engine (1)-coupling (3)-power shaft (4)-planetary cross-country power mechanism sun gear (12)-planet carrier (13)-output gear (14)-output shaft (15)
The speed governing transmission:
Power engine (1)-low-power continuous variable transmission (2)-speed governing sleeve (5)-few tooth difference mechanism center input gear (7)-eccentric sleeving gear (8)-planet wheel (10)-eccentric pivoted arm (9)-differential attachment planet carrier (13)-output gear (14)-output shaft (15)
The following describes the composition and the annexation of constant-power stepless speed variator shown in Figure 1:
The output shaft of power engine (1) and power shaft (4) are rigidly connected by coupling (3), power shaft (4) is connected with planetary cross-country power mechanism sun gear (12), low-power continuous variable transmission (2) is connected on the output shaft of power engine (1), its sleeve (5) is enclosed within power shaft (4) outside and is connected with few tooth difference mechanism center input gear (7), and the eccentric pivoted arm (9) of few tooth difference mechanism is connected with planetary cross-country power mechanism planet carrier (13).
Illustrate through improved few tooth difference mechanism below in conjunction with Fig. 2.The few tooth difference mechanism of diagram lacks tooth difference mechanism eccentric sleeving gear (8) by few tooth difference mechanism center input gear (7), few tooth difference mechanism planet wheel (10), few tooth difference mechanism gear ring (11), the eccentric pivoted arm (9) of few tooth difference mechanism, pin (17) composition.
Working principle below in conjunction with improved few tooth difference mechanism is done further narration to its mechanism.
Few tooth difference mechanism is generally by the pivoted arm input, and by the output of pin dish, if change the pin cover into eccentric bushing, its eccentricity value is identical with pivoted arm off-centre, and the eccentric bushing race diameter is identical with the pin hole diameter of planet wheel.Be the loss of reducing friction, rolling bearing can be installed, the motion of pin this moment in the planet wheel pin hole is restricted, thereby pivoted arm can not rotate and input torque.Its reason is, the planet wheel of few tooth difference mechanism is formed by two kinds of motions, the one, and the parallelogram motion that causes by pivoted arm, the 2nd, planet wheel is done rotation motion under the constraint of gear ring.The motion that the rotation motion of planet wheel is reflected in the planet wheel pin hole is very complicated.And the motion in each hole is because the position difference at each place, hole and movement locus has nothing in common with each other.The pinning cover of few tooth difference mechanism is that line contacts with pin hole, and the diameter in post and hole differs two eccentricity values, thereby makes the rotation motion of planet wheel unrestricted.Now change the pin cover into eccentric bushing, and on eccentric bushing, gear is installed (gear is not eccentric, is center of circle rotation with the pin), then with a central gear and the engagement of above-mentioned eccentric bushing tooth.Like this, central gear drives eccentric sleeving gear rotates eccentric bushing in pin hole, and drives planet crop rotation rotation motion, and makes planet wheel drive eccentric pivoted arm rotation, and eccentric pivoted arm then can not drive planet wheel, thereby becomes the unidirectional driving mechanism of a cover.
The central gear of the few tooth difference mechanism after the above-mentioned repacking is connected with sleeve (speed regulator), and eccentric pivoted arm is connected with the planet carrier of planetary cross-country power mechanism, just can make the planet carrier of differential attachment be controlled and can freely rotate.By the rotating speed of the variable-speed of low-power continuous variable transmission output by sleeve (speed governing axle) and less tooth difference mechanism control planet carrier.Planet carrier obtains the rotating speed of a variable-speed, and is subjected to the self-locking (being the self-locking that pin and eccentric bushing produce) of few tooth difference mechanism and can not rotates arbitrarily.This differential attachment can be exported the rotating speed of variable speed because of the speed change of planet carrier, and planet carrier is subjected to the self-locking of few tooth difference mechanism and cut off and closed envelope power, has improved mechanism efficiency effectively.Low-power continuous variable transmission is not to the differential attachment input power, it has only consumed the frictional loss of few tooth difference mechanism, thereby only carry 5～10% of whole stepless speed changing mechanism power, and 90% power is transmitted by power shaft, by exporting after the differential attachment master speed, thereby make whole stepless speed changing mechanism have the mechanical features of permanent power.
This ratio speed of lacking tooth difference mechanism eccentric sleeving gear and pivoted arm can be 1: 1, and the gear ratio that changes few tooth difference mechanism center input gear and eccentric sleeving gear can change the ratio speed of central gear and pivoted arm.Thereby also changed the slewing range of planet carrier, the speed adjustable range of the rotating speed of output is enlarged or dwindled, so the expansion of speed adjustable range or the efficient of dwindling with whole speed regulator there are direct relation.
It is stressed bigger that few tooth difference mechanism has eccentric pivoted arm and eccentric bushing to die, and therefore, can choose suitable roller and needle bearing.The also available sliding bearing of eccentric bushing.Because after the repacking, each pin energy average force can increase pin quantity when high-power, to adapt to the needs that transmit large torque.
Above-mentioned power engine, low-power continuous variable transmission, few tooth difference mechanism, planetary cross-country power mechanism is all around same rotational, thus the compact structure of entire mechanism, the efficient height, running is steadily, and is easy for installation.
Above-mentioned constant-power stepless speed variator changes sun gear output through the input and output part with planetary cross-country power mechanism into by gear ring output, promptly can be changed into the speedup stepless speed changes devices.Therefore, the slewing range of sleeve mechanism is very extensive, can be 0～10, and segmentation is selected for use in 000 rev/min the scope.Its revolution speed calculating formula is as follows:
0～1000 rev/min of middle low speed output
Sun gear connects power shaft, planet bridge joint speed governing axle, gear ring output
n
B=n (Z
A)/(Z
B) n
Transfer(Z
1)/(Z
B) (Z
B+ Z
A)/(Z
B)
1000～10000 rev/mins of high speed outputs
Gear ring connects power shaft, planet bridge joint speed governing axle, sun gear output
n
A=n
B(Z
B)/(Z
A)-n
Transfer(Z
1)/(Z
2) (Z
B+ Z
A)/(Z
A)
In the formula:
n
AThe sun gear rotating speed
n
BThe gear ring rotating speed
n
TransferThe low-power continuous variable transmission output speed
Z
AThe sun gear number of teeth
Z
BThe gear ring number of teeth
Z
1Few tooth difference mechanism central gear number of teeth
Z
2Few tooth difference mechanism eccentric sleeving gear number of teeth
Few teeth difference mechanism involved in the present invention, the mechanical efficiency of planetary cross-country power mechanism is all very high, so the mechanical efficiency of sleeve mechanism can reach about 90%, also can reach about 80% during low speed output, belong to permanent power-type such as supporting low-power continuous variable transmission, then whole mechanic efficiency will be higher.
The effect of the low-power continuous variable transmission that the present invention is supporting is the friction loss (planet carrier is turned round apart from the friction loss that acts on few teeth difference mechanism) of carrying few teeth difference mechanism. Therefore the comparable above-mentioned low-power continuous variable transmission of the power of whole mechanism enlarges 10～20 times. As with the supporting constant-power stepless speed change device that can be made into 200～300KW of mechanical stepless transmission. As supporting with permanent power electromagnet arrangements for speed regulation, because the electromagnetic speed-adjusting carrying is turned round apart from bigger, thus can make the above constant-power stepless speed change device of 1000KW, and supporting planetary cross-country power mechanism can carry above-mentioned power fully.
The present invention is applicable to that engineering machinery, mining machinery, rolling machinery and all need the structural establishment of constant-power stepless speed change transmission. Its outstanding advantage is being arranged aspect low speed, the large torque infinitely variable speeds transmission. If be engine with internal combustion engine, be equipped with mechanical stepless transmission or direct current infinitely variable speeds device, then can be made into the stepless speed-changing gear case of the usefulness such as automobile, tractor, steamer. Need speed governing flat for electric car, elevator, conveyer belt etc. The place of the transmissions such as surely, starting speed is low has more advantage.
The present invention can be used for constant power speed motor, outside the moving equipment such as constant-power speed regulation gear-box, also can be used alone as various mechanical speed change transmission mechanisms.
The supporting stepless buncher of small-power of the present invention can be with changing the exciting curent speed governing, servomotor speed governing or shake the control speed governing.
The present invention adopts the mode of shunting transmission, is formed by power engine, low-power continuous variable transmission (mechanical type, electromagnetic type, direct current type) and planetary cross-country power mechanism coupling, has compact structure, running is steady, and slewing range is big, the mechanic effect height, the power height, advantage such as power is unrestricted.Patent application of the present invention is that number of patent application is the series application of 87202399 patent applications, increased the few tooth difference mechanism through changing on original structure, thereby solved the circulating power problem of planetary cross-country power mechanism effectively.
Claims (2)
1, a kind of constant-power stepless speed variator, be connected with the output shaft of power engine, and by a cover planetary cross-country power mechanism realization speed change, the power shaft of constant-power stepless speed variator and power machine output shaft are rigidly connected and do synchronous rotation, power shaft is connected with the input component sun gear of planetary cross-country power mechanism, it is characterized in that: also have a stepless speed variator on the power machine output shaft, the load power of this stepless speed variator is lower than the mating power acc power, and connect a sleeve on its output member, this sleeve is connected with the input component gear of the few tooth difference mechanism with auto-lock function, and the pivoted arm of this few gear mechanism output member is connected with the planet carrier of planetary cross-country power mechanism.
2, by the described constant-power stepless speed variator of claim 1, it is characterized in that said few tooth difference mechanism with auto-lock function meshed with eccentric sleeving gear by few tooth difference mechanism center input gear, eccentric sleeving gear has eccentric bushing, pin is positioned at eccentric bushing, eccentric bushing rotates in pin hole and drives planet wheel, and planet wheel and gear ring engagement also drive eccentric pivoted arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106928 CN1020789C (en) | 1988-09-30 | 1988-09-30 | Constant-power stepless speed variator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106928 CN1020789C (en) | 1988-09-30 | 1988-09-30 | Constant-power stepless speed variator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041433A CN1041433A (en) | 1990-04-18 |
| CN1020789C true CN1020789C (en) | 1993-05-19 |
Family
ID=4834434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106928 Expired - Fee Related CN1020789C (en) | 1988-09-30 | 1988-09-30 | Constant-power stepless speed variator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020789C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA013038B1 (en) * | 2002-09-30 | 2010-02-26 | Ульрих Рос | Transmission |
| CN100410562C (en) * | 2005-06-02 | 2008-08-13 | 商春荣 | Stepless automatic gear shifting in gear drive |
| CN101280838B (en) * | 2008-05-29 | 2013-06-26 | 钱昌贤 | Complete mechanical automatic stepless speed-changing device |
| CN102537218A (en) * | 2012-03-08 | 2012-07-04 | 宋保通 | Self-locking braking speed reducer |
| CN110953311B (en) * | 2019-12-30 | 2020-10-09 | 大连碧蓝节能环保科技有限公司 | Gear ring eccentric rotation stepless speed change system |
-
1988
- 1988-09-30 CN CN 88106928 patent/CN1020789C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041433A (en) | 1990-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200997546Y (en) | Hub motor of double-speed electric automobile with positive and reversing rotation speed variation | |
| US20140123787A1 (en) | Geared infinitely variable transmission | |
| CN1888475A (en) | Mechanical and electric mixed electric controlling stepless variable speed driving system | |
| CN1793702A (en) | Variable-speed device | |
| CN1020789C (en) | Constant-power stepless speed variator | |
| CN205890525U (en) | Bi -motor power device and electric automobile are arranged to single file star | |
| CN214036723U (en) | Stepless speed change mechanism | |
| CN1232146A (en) | Multifunctional planetary speed reducer | |
| CN109578544B (en) | Single-planet-row multi-mode hydraulic mechanical stepless speed changer | |
| CN112013087A (en) | Speed change device and speed change method | |
| CN101222161A (en) | Double-velocity transmission electric motor changing speed by positive and inverse rotation of electric motor | |
| CN2037011U (en) | Constant power stepless speed-changing mechanism | |
| CN106627099A (en) | Hybrid power automotive electric machine continuously variable transmission and hybrid electric vehicle | |
| CN215171932U (en) | Pure mechanical stepless speed change transmission device with output self-adaptive load characteristic | |
| CN214999210U (en) | Device for realizing reciprocating motion of fracturing pump through rotation of screw rod nut | |
| CN1445469A (en) | Computer controlled big power variable speed unit | |
| CN108825747A (en) | A kind of fork truck continuously variable transmission device | |
| CN2207478Y (en) | Speed variator with involute planetary gear | |
| CN100458218C (en) | Differential driving variable speed box | |
| CN101806341A (en) | Internally engaged double planetary gear stepless transmission | |
| CN208035938U (en) | Hybrid variable-speed system | |
| CN206217622U (en) | Hybrid vehicle electric mechanical buncher and hybrid vehicle | |
| CN108128139B (en) | Driving device of hybrid power vehicle | |
| CN1684342A (en) | Differential stepless speed changing motor | |
| CN2621360Y (en) | Double-acting electric machine set power device capable of repulsion differential driven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |