CN102022490A - Stepless speed changer with no-pressure friction transmission - Google Patents
Stepless speed changer with no-pressure friction transmission Download PDFInfo
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- CN102022490A CN102022490A CN200910204951XA CN200910204951A CN102022490A CN 102022490 A CN102022490 A CN 102022490A CN 200910204951X A CN200910204951X A CN 200910204951XA CN 200910204951 A CN200910204951 A CN 200910204951A CN 102022490 A CN102022490 A CN 102022490A
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Abstract
The invention relates to a stepless speed changer with no-pressure friction transmission, which achieves stepless speed change above 0-1000 rpm by adopting double drive, wherein an annular gear in the stepless speed changer can rotate. The stepless speed changer works by the following principle: (1) driving an eccentric shaft to rotate and then driving internally meshed planetary gears to revolve around the annular gear by using a main power, carrying out less-gear difference or planetary transmission speed reduction and outputting by using an output shaft, thereby achieving constant-ratio speed-reduced rotation; (2) partitioning the annular gear from a speed changer shell by using a rolling bearing to ensure that the annular gear can rotate and is limited to move in radial direction; and driving the annular gear to rotate by using speed-regulating power through a gear pair or a worm gear, and regulating the rotating direction and speed of the annular gear to ensure that the output shaft achieves stepless speed change. When the speed-regulating power reaches the required output rotation speed, the rotation speed is locked so that the speed changer can continuously rotate on the required output rotation speed. The stepless speed changer with no-pressure friction transmission has the advantages of simple structure, small size, no pressure friction, stable transmission, high efficiency and long service life and is widely applied to speed changing mechanisms in various kinds of machinery.
Description
The present invention relates to a kind of stepless speed changer that does not have the pressure friction driving, it is characterized in that, adopt two stepless change that drive, step-less adjustment is carried out in the interval of slewing range more than 0～1000rom.
Common mechanical stepless speed-changing machine has multiple, its variable transmission mechanism is by no intermediary element, by intermediary element, around the property intermediary element and planetaryly form various stepless speed changers, but these stepless speed changers all are to strengthen frictional force by boost pressure to realize continuously changing of velocity ratio and output speed; Complex structure, member is easy to fatigue and weares and teares, and has slide relative in the speed-change process, and gear ratio is inaccurate; Gear ratio is generally carried out step-less adjustment 1: 5 scope, obtains big reduction speed ratio if desired, and use then needs to connect with speed reducer.
The purpose of this invention is to provide a kind of stepless speed changer that does not have the pressure friction driving, different fully with common stepless speed changer, without the frictional force transmission, directly add worm gear pair and drive the large-scale stepless change of realization by gear transmission or gear; With respect to the stepless speed changer that the pressure friction driving is arranged, its drive mechanism is simplified more than 40%, and volume is little, and slewing range is big, does not have the pressure friction, and transmission is stable, efficient height, long service life.
Purpose of the present invention is achieved through the following technical solutions: adopt two stepless speed changers that reach the above no pressure friction driving of 0～1000rom that drive, ring gear wherein can be regulated rotation; Implementation step is 1), the rotating speed of active force drives the eccentric shaft rotation, planet gear meshed revolves round the sun around ring gear in driving again, slows down through few tooth difference transmission, sells the output of reel and output shaft again and reaches fixed than the rotation of slowing down; 2), with ring gear and variable-speed motor housing at interval, make ring gear rotate and to limit ring gear and move radially with rolling bearing; Speed governing power drives the ring gear rotation through gear pair or worm gear pair, and reverse transmission took place the gear ratio of engagement in the speed of ring gear rotation made; Simultaneously, the direction of ring gear rotation also makes the rotating speed of output shaft that corresponding the change taken place.When speed governing power adjustment during to the output speed that needs, speed governing power locks this rotating speed, makes variable-speed motor continue rotation on the rotating speed of needs.In adjustment process, ring gear rotates soon, and velocity ratio is just little, and the rotating speed of output shaft raises; Ring gear rotates slowly, and velocity ratio is just big, and the rotating speed of output shaft reduces.
The invention has the beneficial effects as follows: adopt two stepless speed changers that reach more than 0～1000rom that drive to reach the effect of saving power source more than 60%, be widely used in the gear in the various machineries, as automobile, boats and ships, locomotive, lathe, transportation, mine, metallurgy, chemical industry, oil field, weaving, pump, food machinery or the like.
With reference to the accompanying drawings with specific embodiment to the detailed description of the invention.
Fig. 1 is the principle schematic of the stepless speed changer of no pressure friction driving.
The stepless speed changer structural principle schematic representation that Fig. 2 drives through gear pair for speed governing power.
The stepless speed changer structural principle schematic representation that Fig. 3 drives through worm gear pair for speed governing power.
The stepless speed changer structural principle schematic representation that Fig. 4 drives through the cambered surface worm gear pair for speed governing power.
Fig. 5 is the stepless change motor speed effect 1 of no pressure friction driving.Wherein, few tooth difference velocity ratio i=23, ω
2With ω
1Sense of rotation is identical, and the active force input speed is set: ω
1=1500r/min is in the table: ω
2Be gear ring rotating speed, ω
3Be the output shaft rotating speed, i is the actual transmission ratio.
Fig. 6 is the stepless change motor speed effect 2 of no pressure friction driving.Wherein, few tooth difference velocity ratio i=23, ω
2With ω
1Sense of rotation is opposite, and the active force input speed is set: ω
1=1500r/min is in the table: ω
2Be gear ring rotating speed, ω
3Be the output shaft rotating speed, i is the actual transmission ratio.
Fig. 7 is the principle schematic of stepless speed changer of the no pressure friction driving of planetary pinion transmission.
As shown in Figure 1, the rotating speed of active force is pressed ω
1Direction drive eccentric shaft H rotation, planet gear meshed C slowed down through very few tooth difference around ring gear B revolution in the crank of eccentric shaft H drove, planetary pinion C drive pin reel V makes output shaft by ω
3Direction surely than the rotation of slowing down.S makes ring gear B according to ω when speed governing motivational drive worm gear pair
2Direction when rotation, every increase by one circle of ring gear rotational speed, the rotational speed of output shaft is then because ring gear and the reverse transmission of planetary gear ratio cause ω
3Rotating speed change thereupon, thereby reach the above stepless change of 0～1000rpm.Be adjusted to the output speed ω that needs as speed governing motivational drive worm gear pair S
3The time, speed governing power then locks this rotating speed, makes variable-speed motor in this rotational speed omega
3Go up and continue rotation.
As shown in Figure 2, be the stepless speed changer that gear pair S regulates; Active force makes planetary pinion C form two eccentric rotations up and down symmetrically through eccentric shaft H and bearing 1, planetary pinion C and ring gear B mesh and revolve round the sun around ring gear B, slow down through very few tooth difference, 6 borehole jacks on the planetary pinion C are gone into the difference cover 4 on the fork shaft pin 3, drive output shaft 5 with respect to eccentric shaft H counterrotating through fork shaft pin 3, bearing pin dish V again.When ring gear fixedly the time, be the planet-gear speed reducer of few tooth difference.With ring gear and variable-speed motor housing interval, make ring gear B can rotate and limit moving radially of ring gear B with rolling bearing 2; Speed governing power rotates to the left or to the right through the external gear that gear S drives on the ring gear B, when the sense of rotation of ring gear B is identical with active force, the every increase of ring gear rotational speed one circle, the rotating speed of output shaft then increase because of reverse transmission takes place for the gear ratio of interior engagement; Formed less than 0rpm to the stepless speed changer that can regulate arbitrarily more than the 1000rpm; Rotating speed state such as Fig. 5 of output shaft.When the sense of rotation of ring gear B is opposite with active force, every increase by one circle of ring gear rotational speed, reverse transmission still takes place because of the gear ratio of interior engagement in the rotating speed of output shaft, and the rotating speed of output shaft then is that negative value increases, and actual output speed is that absolute value increases; Formed greater than 0rpm to the stepless speed changer that can regulate arbitrarily more than the 1000rpm.Rotating speed state such as Fig. 6 of its output shaft.When speed governing power adjustment during to the output speed that needs, speed governing power then locks this rotating speed, makes variable-speed motor continue rotation on this rotating speed.
As shown in Figure 3, be the planimetric map of Fig. 2, the gear pair S among Fig. 2 has changed cylindrical worm gear S in Fig. 3, and its transmission process is fully identical with Fig. 2.The stepless change that cylindrical worm gear is regulated is mainly used in the little stepless change occasion of power.
As shown in Figure 4, be the secondary stepless change of regulating of hourglass worm, transmission process and Fig. 3 are identical.Because it is many that hourglass worm participates in the number of teeth that meshes simultaneously, bearing capacity is 3 times of cylindrical worm gear, is specially adapted to powerful stepless change occasion.
As shown in Figure 5, be the stepless change motor speed effect 1 of no pressure friction driving, the number of teeth of setting the planetary pinion C of variable-speed motor is 46, the ring gear number of teeth is 48, is the two teeth difference transmission, according to few tooth difference transmission formula, velocity ratio i=23, active force input ω
1=1500rpm; Active force ω
1With ring gear ω
2Sense of rotation identical, when the rotational speed omega of ring gear
2During by 0～1500rpm, the rotational speed omega of variable-speed motor output shaft
3Be between-65.217 → 0 → 1500rpm; The actual transmission ratio is to change between-23 → ∞ → 1.Of particular note: when the rotating speed of regulating power is ω
2During=62.5rpm, the rotating speed of output shaft is 0rpm; Turn left the right side by being inverted in the transfer process of just changeing 0, and mechanical transmission certainly exists " return difference ", in the high occasion of return difference required precision, is a difficult problem always; The stepless speed changer of no pressure friction driving is continuous adjustment movement by being inverted in the transfer process of just changeing, and does not have " return difference "; For similar radar contact, tracking target is of great use.
As shown in Figure 6, be the stepless change motor speed effect 2 of no pressure friction driving, its setting data and Fig. 5 are identical, and that different is active force ω
1With ring gear ω
2Sense of rotation opposite, when the rotational speed omega of ring gear
2During by 0～1500rpm, the rotational speed omega of variable-speed motor output shaft
3Be between-65.217 → 0 → 1630.435rpm, the actual transmission ratio is to change between-23 →-0.92.
As shown in Figure 7, the rotating speed of active force is pressed ω
1Direction drive sun gear A rotation, sun gear A drives planetary pinion C around ring gear B revolution, and drives planet carrier and output shaft H with ω
3Direction rotation, as ring gear B fixedly the time, be planet-gear speed reducer, planet carrier and output shaft H are with ω
3Direction press the rotation of slowing down of planetary gear train velocity ratio.S makes ring gear B according to ω when speed governing motivational drive worm gear pair
2Direction rotation, then make the reverse transmission of gear ratio of planetary pinion C and ring gear B to cause ω
3Rotating speed change, thereby obtain the above stepless change of 0～1000r/min.Be adjusted to the output speed ω that needs as speed governing motivational drive worm gear pair S
3The time, speed governing power then locks this rotating speed, makes variable-speed motor remain on rotational speed omega
3Go up and continue rotation.
The use condition of the stepless speed changer of no pressure friction driving is described with examples of implementation below:
The pumping unit in example 1, certain oil field, its power of motor is 45kw, and rotating speed is 960rpm, and rated current is 30.5A, and pumping unit starts immediate current and reaches 180A, shows that electric motor starting is at full capacity; Normally in service, change between current value 15～25A, illustrate that motor is in the situation of low load basically; Illustrate that also the motor of selecting 45kw for use mainly is to deal with pumping unit moment fully loaded to start.In order to save power consumption, use the motor of the stepless speed changer replacement 45kw of no pressure friction driving, the active force of stepless speed changer is 4.5kw, speed governing power is 5.5kw.The output torque of 45kw is 623N.m; Active force 4.5kw is through reduction speed ratio i=33, torque is 851N.m, has surpassed the 623N.m of 45kw, and variable-speed motor just easily starts pumping unit with the low speed of 45rpm, the direct current generator that starts speed governing then is promoted to 960r/min gradually with the output shaft rotating speed, reaches the original operational effect of pumping unit; Saved electric power 35kw, amount of electricity saving reaches 77%.
The main-gear box of example 2, lathe or milling machine is to realize that by gear shift rotating speed changes, and the structure of gearbox is very complicated; Use the stepless speed changer of no pressure friction driving, the main-gear box designs simplification that can make lathe is more than 40%, reduces the manufacture cost of lathe, makes the spindle speed of lathe can step-less adjustment.
Example 3, the stepless speed changer that will not have a pressure friction driving are used for automobile variable speed, remove baroque, make exigent speed variator system, fully with the stepless speed changer replacement of no pressure friction driving.Implementation methods is: motor car engine drives a cover positive and negative rotational mechanism through hydraulic couplers, and the output with positive and negative rotational mechanism drives the stepless speed changer work surely than deceleration as active force again; The engine-driving direct current generator is with the ring gear rotation of speed governing motivational drive stepless speed changer simultaneously; Under the constant situation of engine power, make automobile obtain bigger power and slewing range.The stepless speed changer of no pressure friction driving makes the gearbox of automobile simplify more than 60%; Because the simplification of gearbox makes Transmitted chains shorten dramatically, thereby engine efficiency can improve about 5%; And the reverse gear that makes automobile is step-less adjustment from low speed to high speed also.Reverse gear is step-less adjustment from low speed to high speed, is of great use for naval vessels, police vehicle, military vehicle.
Claims (7)
1. a stepless speed changer that does not have the pressure friction driving is characterized by and adopts two the driving to reach the above stepless change of 0～1000rpm; Scheme is: the ring gear in the stepless speed changer can rotate; Implementation step is 1), active force drives the eccentric shaft rotation, planet gear meshed revolved round the sun around ring gear in eccentric shaft drove, and slowed down through few tooth difference transmission, sold the output of reel and output shaft again and reached fixed than the rotation of slowing down; 2), with ring gear and variable-speed motor housing at interval, make ring gear can rotate and limit moving radially of ring gear with rolling bearing; Speed governing power drives the ring gear rotation through gear pair, and the sense of rotation and the rotational speed of regulating ring gear make output shaft reach stepless change.
2. two driving of employing according to claim 1 reaches the above stepless speed changer of 0～1000r/min; Be that ring gear in the stepless speed changer is to rotate; Implementation step is 1), the rotating speed of active force drives the sun gear rotation, sun gear drives with the ring gear planet gear meshed and revolves round the sun around ring gear, slows down through Gear Planet Transmission, again through planet carrier and output shaft output and reach fixed than the rotation of slowing down; 2), with ring gear and variable-speed motor housing at interval, make ring gear can rotate and limit moving radially of ring gear with rolling bearing; Speed governing power drives the ring gear rotation through gear pair, and the sense of rotation and the rotational speed of regulating ring gear make output shaft reach stepless change.
3. two driving of employing according to claim 1 reaches the above stepless speed changer of 0～1000rpm; Speed governing power can drive the ring gear rotation by cylindrical worm gear.
4. two driving of employing according to claim 1 reaches the above stepless speed changer of 0～1000rpm; Speed governing power can rotate by the secondary ring gear that drives of hourglass worm.
5. two driving of employing according to claim 1 reaches the above stepless speed changer of 0～1000rpm; Planetary pinion can be an involute gear around the internal gear pair of ring gear revolution.
6. two driving of employing according to claim 1 reaches the above stepless speed changer of 0～1000rpm; Planetary pinion can be a cycloidal gear around the internal gear pair of ring gear revolution.
7. two driving of employing according to claim 1 reaches the above stepless speed changer of 0～1000rpm; Planetary pinion can be other gears around the internal gear pair of ring gear revolution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910204951XA CN102022490A (en) | 2009-09-22 | 2009-09-22 | Stepless speed changer with no-pressure friction transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910204951XA CN102022490A (en) | 2009-09-22 | 2009-09-22 | Stepless speed changer with no-pressure friction transmission |
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| CN102022490A true CN102022490A (en) | 2011-04-20 |
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| CN200910204951XA Pending CN102022490A (en) | 2009-09-22 | 2009-09-22 | Stepless speed changer with no-pressure friction transmission |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477118A (en) * | 2012-02-24 | 2013-12-25 | 日锻汽门株式会社 | Planetary gear reducer |
| CN109611519A (en) * | 2019-01-11 | 2019-04-12 | 李培基 | Constrain the fewer differential teeth planetary differential reducing and infinitive variable gear box of self-locking function |
| 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 |
| CN111366362A (en) * | 2018-12-26 | 2020-07-03 | 深圳市优必选科技有限公司 | Transmission return difference measuring method and device, terminal equipment and readable storage medium |
| CN115163756A (en) * | 2022-06-17 | 2022-10-11 | 天津旗领机电科技有限公司 | Lightweight hollow precision speed reducer |
-
2009
- 2009-09-22 CN CN200910204951XA patent/CN102022490A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477118A (en) * | 2012-02-24 | 2013-12-25 | 日锻汽门株式会社 | Planetary gear reducer |
| CN111366362A (en) * | 2018-12-26 | 2020-07-03 | 深圳市优必选科技有限公司 | Transmission return difference measuring method and device, terminal equipment and readable storage medium |
| CN109611519A (en) * | 2019-01-11 | 2019-04-12 | 李培基 | Constrain the fewer differential teeth planetary differential reducing and infinitive variable gear box of self-locking function |
| 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 |
| CN115163756A (en) * | 2022-06-17 | 2022-10-11 | 天津旗领机电科技有限公司 | Lightweight hollow precision speed reducer |
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Application publication date: 20110420 |