CN1041433A - Constant-power stepless speed variator - Google Patents
Constant-power stepless speed variator Download PDFInfo
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- CN1041433A CN1041433A CN 88106928 CN88106928A CN1041433A CN 1041433 A CN1041433 A CN 1041433A CN 88106928 CN88106928 CN 88106928 CN 88106928 A CN88106928 A CN 88106928A CN 1041433 A CN1041433 A CN 1041433A
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- power
- gear
- stepless speed
- tooth difference
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Abstract
The present invention relates to a kind of constant-power stepless speed variator.This mechanism adopts the mode of shunting transmission, by prime mover (motor or internal-combustion engine), low-power continuous variable transmission (mechanical type, electromagnetic type all can) and planetary cross-country power mechanism are just being joined and are being formed, and by a few tooth difference mechanism with auto-lock function, cut off the circulating power of planetary cross-country power mechanism inside effectively, improve efficient, realized constant-power stepless speed change.This mechanism has compact structure, running steadily, slewing range is big, mechanical efficiency height, advantage such as power is unrestricted.
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, part serious wear in addition, thereby do 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 the endless gear of permanent power 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 threephase asynchronous machine or interior alkene combustion machine etc.)
2, low-power continuous variable transmission
3, coupling (output shaft and the power shaft that connect power engine)
4, power shaft (central shaft)
5, sleeve (speed governing axle)
6, lack tooth difference mechanism pin dish
7, lack tooth difference mechanism center input gear
8, lack tooth difference mechanism eccentric sleeving gear
9, the eccentric pivoted arm of few tooth difference mechanism
10, lack tooth difference mechanism planet wheel
11, lack 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 the capable frame of planetary cross-country power mechanism (13).
Illustrate through improved few tooth difference mechanism below in conjunction with Fig. 2.The few tooth difference mechanism of diagram is by few tooth difference mechanism center input gear (7), few tooth difference mechanism eccentric sleeving gear (8), the few tooth difference mechanism gear ring (11) of few tooth difference mechanism planet wheel (10), the eccentric pivoted arm (9) of few tooth difference mechanism, pin (17) is formed.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 import 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 pin 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 sleeving gear.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 the planet distance, 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, the planet carrier of differential attachment is controlled and is freely to 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 mechanical efficiency effectively.Low-power continuous variable transmission is to the differential attachment input power, and it has only consumed the frictional loss of few tooth difference mechanism, thereby only carries the 5-10% of whole stepless speed changing mechanism power, and 90% power is transmitted by power shaft, by exporting after the differential attachment speed change.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.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, made the speed adjustable range of the rotating speed of output enlarge and to dwindle.Therefore speed adjustable range has the efficient that enlarges or dwindle with whole speed regulator that direct relation is arranged.
Few tooth difference mechanism has eccentric pivoted arm and eccentric bushing stressed bigger, but can choose suitable roller 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 at 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
A(Z
A)/(Z
B)-n
Transfer(Z
1)/(Z
2) (Z
B+ Z
A)/(Z
B)
1000-10000 rev/min of high speed output
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
The Z gear ring number of teeth
The few tooth difference mechanism of the Z central gear number of teeth
The few tooth difference mechanism of the Z 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 Zheng cover mechanism can reach 90% Zuo You, also can reach 80% Zuo You during low speed output, belong to permanent power-type such as supporting low-power continuous variable transmission, it will be higher that Ze Zheng mechanic efficiency handed over.
The low-power continuous variable transmission that the present invention is supporting be the friction loss (friction loss of planet carrier torque Zuo Yong Zai few teeth difference mechanism) of carrying few teeth difference mechanism as Yong. Therefore the comparable above-mentioned low-power continuous variable transmission of the power of Zheng mechanism enlarges 10-20 doubly. Such as the supporting constant-power stepless speed change device that can be made into 200-300kw of Yong mechanical stepless transmission. Supporting such as the permanent power electromagnet arrangements for speed regulation of Yong, because electromagnetic speed-adjusting carrying torque is bigger, thus can become the above constant-power stepless speed change device of 1000kw by Zhi, and supporting planetary cross-country power mechanism can carry above-mentioned power fully.
The present invention is applicable to engineering machinery, mining machinery, and Zha steel machinery and all need the plant equipment of constant-power stepless speed change transmission. Its outstanding You point of You aspect Zai low speed, the large torque variable transmission. If the Yong internal combustion engine is engine, be equipped with mechanical stepless transmission or Zhi stream stepless speed change device, Ze can be made into the infinitive variable gear box of the Yong such as automobile, tractor, steamer. Need speed governing steady for electric car, elevator, conveyer belt etc., the low place of transmission of waiting of priming speed has more the You point.
The present invention can be used for constant power speed motor, outside the power-equipments such as constant-power speed regulation gear-box, also can be used alone as various mechanical speed change transmission mechanisms.
But the supporting low-power continuous variable transmission Yong of the present invention changes 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, 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 having 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, press the constant-power stepless speed variator of claim 1, it is characterized in that said few tooth difference mechanism with self-marketing 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 true CN1041433A (en) | 1990-04-18 |
CN1020789C 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) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100410562C (en) * | 2005-06-02 | 2008-08-13 | 商春荣 | Stepless automatic gear shifting in gear drive |
CN102537218A (en) * | 2012-03-08 | 2012-07-04 | 宋保通 | Self-locking braking speed reducer |
CN101788041B (en) * | 2002-09-30 | 2012-11-14 | 乌尔里克·罗斯 | Vari-speed drive |
CN101280838B (en) * | 2008-05-29 | 2013-06-26 | 钱昌贤 | Complete mechanical automatic stepless speed-changing device |
CN110953311A (en) * | 2019-12-30 | 2020-04-03 | 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
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101788041B (en) * | 2002-09-30 | 2012-11-14 | 乌尔里克·罗斯 | Vari-speed drive |
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 |
CN110953311A (en) * | 2019-12-30 | 2020-04-03 | 大连碧蓝节能环保科技有限公司 | Gear ring eccentric rotation stepless speed change system |
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 |
Also Published As
Publication number | Publication date |
---|---|
CN1020789C (en) | 1993-05-19 |
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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) | ||
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C19 | Lapse of patent right due to non-payment of the annual fee | ||
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