CN104595449A - Variable-speed drive device of continuously variable belt transmission - Google Patents
Variable-speed drive device of continuously variable belt transmission Download PDFInfo
- Publication number
- CN104595449A CN104595449A CN201410667794.7A CN201410667794A CN104595449A CN 104595449 A CN104595449 A CN 104595449A CN 201410667794 A CN201410667794 A CN 201410667794A CN 104595449 A CN104595449 A CN 104595449A
- Authority
- CN
- China
- Prior art keywords
- gear
- variable
- belt drive
- belt transmission
- continuously variable
- 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.)
- Pending
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Classifications
-
- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
-
- 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
- F16H2702/00—Combinations of two or more transmissions
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a variable-speed drive of a continuously variable belt transmission. The variable-speed drive comprises the continuously variable belt transmission, a single-row planetary gear mechanism, an input shaft and an output shaft, the single-row planetary gear mechanism comprises a planetary carrier, a gear ring, sun wheels and a planet wheel, and the continuously variable belt transmission comprises a drive disc and a driven disc. The planetary carrier is connected with a drive gear through an idle wheel in a driving mode, the gear ring is connected with the driven disc of the continuously variable belt transmission, the sun wheels are connected with the output shaft, and the drive gear and the drive disc of the continuously variable belt transmission are installed on the input shaft. Through control over changes of the drive ratio of the continuously variable belt transmission by a small magnitude, large-magnitude changes of the drive ratio of the transmission are achieved, in this way, the rotating speed of an engine is low when an automobile is driven at a high speed, and economy is improved; moreover a gear reversing mechanism does not need to be independently arranged, manufacturing and controlling difficulty of a control mechanism is lowered, the cost of the transmission is lowered, and the failure rate of the transmission is decreased.
Description
Technical field
The present invention relates to automobile variable speed transmission art field, particularly a kind of variable v-belt drive infinitely variable speed transmission.
Background technique
The auto continuously variable transmission of current application is generally the transmission form of single-stage, driving belt and the variable driven wheel of working diameter is adopted to match incompatible transferring power, can realize continuously changing of velocity ratio, common stepless speed variator has belt type and metal band type two kinds of variable v-belt drives.The transmission form of single-stage make stepless speed variator the numerical value of resultant gear ratio less, the numerical value as the single-stage stepless speed variator resultant gear ratio that current automobile is applied is less than 6, and when making galloping like this, engine speed is high, and Economy is poor.In addition, stepless speed variator generally common at present needs to arrange reverse gear and reverse gear control gear specially, increases control mechanism manufacture and controls difficulty, the cost of speed changer and rate of fault all can be increased.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of variable v-belt drive infinitely variable speed transmission by brand new is provided, the numerical value of its resultant gear ratio is large, does not need to arrange reverse gear mechanism and control gear in addition, to overcome the deficiencies in the prior art when realizing reverse gear.
For solving the problems of the technologies described above, the technical solution used in the present invention is: variable v-belt drive infinitely variable speed transmission, comprise variable v-belt drive, simple planetary arrangement, input shaft, output shaft, described simple planetary arrangement comprises planet carrier, gear ring, sun gear, planet wheel, described variable v-belt drive comprises driving disc and driven disc, described planet carrier is in transmission connection by idle pulley and driving gear, described gear ring is connected with the driven disc of variable v-belt drive, described sun gear is connected with output shaft, the driving disc of described driving gear and variable v-belt drive is arranged on input shaft.
Described idle pulley is arranged on idler shaft, and described idle pulley engages with driving gear and driven gear respectively, and driven gear is connected with planet carrier.
The driven disc of described variable v-belt drive is arranged on the second axle, and described second axle is connected with gear ring.
Compared with prior art, the present invention has the following advantages:
The present invention is on the basis of existing common stepless speed variator, by increasing simple planetary arrangement and main driven gear, it is made to obtain the change of significantly transmission ratio by the velocity ratio change controlling variable v-belt drive by a small margin, its speed changer resultant gear ratio numerical value is far longer than the resultant gear ratio numerical value of existing stepless speed variator, speed changer resultant gear ratio numerical value is more than more than 10, the speed changer resultant gear ratio numerical value that can realize in theory is for infinitely great, when making galloping, engine speed is lower, and Economy is improved.Speed changer does not need to arrange reverse gear mechanism separately in addition, makes speed changer structure compacter, reduces control mechanism manufacture and controls difficulty, and simultaneously the cost of speed changer and rate of fault also can decline.
Accompanying drawing explanation
Fig. 1 is power-transmitting unit structural representation of the present invention.
Embodiment
Below with reference to accompanying drawing and embodiment, the present invention is described in more detail.
See Fig. 1, variable v-belt drive infinitely variable speed transmission of the present invention adopts variable v-belt drive and planetary gears to combine transferring power, comprise variable v-belt drive 18, simple planetary arrangement 6, input shaft 5, output shaft 12, simple planetary arrangement 6 comprises sun gear 11, planet wheel 7, planet carrier 13 and gear ring 14, variable v-belt drive comprises driving disc and driven disc, driving disc is by active fixed tray 1, initiatively movable plate 3 is formed, driven disc comprises dynamic fixed tray 16, driven movable plate 17, V-type band 2 connects driving disc and driven disc, velocity ratio change among a small circle can be realized.
Planet carrier 13 is in transmission connection by idle pulley 8 and driving gear 4, and idle pulley 8 is arranged on idler shaft 9, engages respectively with driving gear 4 and driven gear 10.Driven gear 10 is connected with planet carrier 13, and sun gear 11 is connected with output shaft 12, and power is externally exported by output shaft 12.Gear ring 14 is connected with the driven disc of variable v-belt drive.
Initiatively fixed tray 1, initiatively movable plate 3 and driving gear 4 are arranged on input shaft 5, and driven fixed tray 16, driven movable plate 17, on the second axle 15, are connected with gear ring 14 by the second axle 15.Initiatively movable plate 3 and driven movable plate 17 can realize moving left and right by control mechanism, thus change variable v-belt drive 18 velocity ratio, when active movable plate 3 moves to left, when driven movable plate 17 moves to right simultaneously, variable v-belt drive 18 velocity ratio reduces, when active movable plate 3 moves to right, when driven movable plate 17 moves to left simultaneously, variable v-belt drive 18 velocity ratio then increases.
The transmission ratio of this embodiment
characteristic follow velocity ratio between moving gear 10 and driving gear 4
, gear ring 14 number of teeth of simple planetary arrangement 6 and the ratio of sun gear 11 number of teeth
relevant, draw transmission ratio through deriving
formula is as follows:
=1/（（1+
）/
－
/
）
-transmission ratio;
gear ring 14 number of teeth of-simple planetary arrangement 6 and the ratio of sun gear 11 number of teeth;
-variable v-belt drive 18 velocity ratio;
velocity ratio between-driven gear 10 and driving gear 4.
If the velocity ratio between driven gear 10 and driving gear 4 is
=2, gear ring 14 number of teeth of simple planetary arrangement 6 and the ratio of sun gear 11 number of teeth
when=2.5, transmission ratio
for:
=1/(3.5/2－2.5/
)
The transmission ratio of this embodiment
numerical value and variable v-belt drive 18 velocity ratio
corresponding relation as shown in table 1.
the velocity ratio i numerical value of table 1 speed changer and variable v-belt drive velocity ratio i
t
corresponding relation
| 0.7 | 0.8 | 1 | 1.2 | 1.3 | 1.43 | 1.6 | |
| -0.55 | -0.73 | -1.33 | -3 | -5.78 | ∞ | 5.33 |
As can be seen from Table 1, variable v-belt drive 18 velocity ratio
be less than 2 times from 0.7 to 1.3 consecutive variations scopes, and transmission ratio
then from-0.55 to-5.78 consecutive variations, resultant gear ratio numerical value is more than 10 times, thus the velocity ratio change realized by controlling variable v-belt drive 18 by a small margin obtains the change of significantly transmission ratio, the speed changer resultant gear ratio numerical value that can realize in theory is for infinitely great.In addition when variable v-belt drive 18 velocity ratio is greater than 1.43, output shaft 12 sense of rotation changes, and realizes reverse gear, does not need to arrange reverse gear mechanism separately.
Claims (3)
1. variable v-belt drive infinitely variable speed transmission, comprise variable v-belt drive, simple planetary arrangement, input shaft, output shaft, described simple planetary arrangement comprises planet carrier, gear ring, sun gear, planet wheel, described variable v-belt drive comprises driving disc and driven disc, it is characterized in that: described planet carrier is in transmission connection by idle pulley and driving gear, described gear ring is connected with the driven disc of variable v-belt drive, described sun gear is connected with output shaft, and the driving disc of described driving gear and variable v-belt drive is arranged on input shaft.
2. variable v-belt drive infinitely variable speed transmission according to claim 1, it is characterized in that: described idle pulley is arranged on idler shaft, described idle pulley engages with driving gear and driven gear respectively, and driven gear is connected with planet carrier.
3. variable v-belt drive infinitely variable speed transmission according to claim 1, is characterized in that: the driven disc of described variable v-belt drive is arranged on the second axle, and described second axle is connected with gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667794.7A CN104595449A (en) | 2014-11-21 | 2014-11-21 | Variable-speed drive device of continuously variable belt transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667794.7A CN104595449A (en) | 2014-11-21 | 2014-11-21 | Variable-speed drive device of continuously variable belt transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104595449A true CN104595449A (en) | 2015-05-06 |
Family
ID=53121414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410667794.7A Pending CN104595449A (en) | 2014-11-21 | 2014-11-21 | Variable-speed drive device of continuously variable belt transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104595449A (en) |
-
2014
- 2014-11-21 CN CN201410667794.7A patent/CN104595449A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |
|
| RJ01 | Rejection of invention patent application after publication |