CN202381630U - Continuously variable transmission structure of planetary gears - Google Patents
Continuously variable transmission structure of planetary gears Download PDFInfo
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- CN202381630U CN202381630U CN2012200027123U CN201220002712U CN202381630U CN 202381630 U CN202381630 U CN 202381630U CN 2012200027123 U CN2012200027123 U CN 2012200027123U CN 201220002712 U CN201220002712 U CN 201220002712U CN 202381630 U CN202381630 U CN 202381630U
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Abstract
The utility model discloses a continuously variable transmission structure of planetary gears, which has the advantages of capability of bearing large torque, no slippage phenomenon, simple structure, few parts, low manufacturing and maintenance cost, very long service life and a wide transmission range, and can be applied to various heavy-duty and large-scale automobile and small automobiles. The continuously variable transmission structure disclosed by the utility model is based on the structural characteristics of the planetary gears and can change the transmission ratio of a gear ring and a sun wheel by changing the rotational speed of a planetary gear frame and realize continuously variable transmission of power input and output rate. The continuously variable transmission structure comprises the gear ring, the planetary gear frame and the sun wheel, wherein the gear ring is connected with a power input shaft of an automobile engine, the sun wheel is connected with a power output shaft, a plurality of the planetary gears are mounted on the planetary gear frame, the planetary gears are connected with a power regulation and control device which can change the speed of the planetary gears, and the power regulation and control device comprises a control power input shaft and a control gear arranged at one end of the control power input shaft.
Description
Technical field
The utility model relates to infinitely variable speed structure, specifically is meant a kind of planetary gear stepless speed changing structure.
Background technique
CVT is the stepless change transmission, and its English full name Continuous Variable Transmission is called for short CVT.The speed changer that has infinitely variable speed gearing is also referred to as continuous variable speed case or stepless speed variator.The maximum difference of this stepless speed variator and common automatic transmission is that it has saved complicated and heavy Gear combination speed change transmission, and has only used two groups of belt wheels to carry out the speed change transmission.Contact radius through changing driving wheel and follower driving belt carries out speed change.Because CVT can realize continuously changing of velocity ratio, thus the optimum Match of the power train of obtaining and engine operating condition, and the fuel economy and the power character of raising car load are improved driver's handiness property and occupant's riding comfort.
For realizing stepless change, can adopt liquid transmission, electric drive and three kinds of modes of mechanical transmission by the kind of drive.(1) liquid transmission, liquid transmission are divided into two types: one type is hydraulic type, mainly forms the variable speed drive of perhaps being made up of valve and pump by pump and motor, is applicable to the middle low power transmission.Another kind of is hydraulic type, adopts hydraulic couplers or fluid moment to carry out the speed change transmission, is applicable to high-power (hundreds of to several megawatts).The main feature of liquid transmission is: speed adjustable range is big, can absorb to impact and prevent to transship, and transmission efficiency is higher; Life-span is long, easily is automated: accuracy of manufacturing requires high, and price is more expensive; Output characteristics is permanent torque, and sliding ratio is bigger, and leakage of oil takes place during running easily.
(2) electric drive, electric drive is divided three classes basically: one type is the electromagnetism sliding type, and it is that an electromagnetic slip clutch is installed in asynchronous motor, comes speed governing through changing its field current, and this belongs to a kind of mode of speed regulation that comparatively falls behind.Its characteristic structure is simple, and cost hangs down stepless change, convenient operating maintenance: it is maximum to slide, and efficient is low, and heating is serious, is not suitable for the sustained load running, so generally only be used for the small-power transmission.Two types is the direct current motor formula, realizes speed governing through changing magnetic flux or changing armature voltage.Be characterized in that speed adjustable range is big, precision is also higher, but complex equipments, and cost is high, and is difficult in maintenance, generally is used for medium power range (tens to hundreds of kilowatt), is progressively substituted by the Wechselstrommotor formula at present.Three types is the Wechselstrommotor formula, carries out speed governing through pole-changing, pressure regulation and frequency conversion.The maximum persons of practical application are frequency control of motor speed, promptly adopt an amplitude transformer to obtain luffing power supply, drive motor speed change then.Be characterized in good speed adjustment features, scope is big, efficient is higher, can control automatically, volume is little, the suitable power wide ranges: mechanical property is in the permanent torque of reduction of speed section, efficient is low and running is steady inadequately during low speed, price is higher, maintenance needs the professional workforce.In recent years, frequency variator develops rapidly as a kind of advanced person, good speed change gear, and mechanical stepless transmission has been produced certain impact.
(3) mechanical transmission, mechanically operated characteristics mainly are: stabilization of speed, sliding ratio is little, and reliable operation has permanent power mechanical property, and transmission efficiency is higher, and simple in structure, and is easy to maintenance, and price is relatively cheap; But component processing and lubricating requirement are higher, and bearing capacity is lower, and be overload-resistant and impact resistance is relatively poor, so in generally being suitable for, the small-power transmission.
Existing electrodeless variable-speed is a kind of friction type transmission, drives two diameter-variable wheels with the frictional force of special steel band and realizes speed change.This structure can't be born high pulling torque, the automobile of high-power.Also can't realize impact rapidly.So it can only be applied to add technical reason on a spot of compact car always, the working life of this kind electrodeless variable-speed structure is also shorter, and maintenance cost is too high.Slewing range is little.
The model utility content
The problem that the utility model need solve provide a kind of can bear high pulling torque, no skidding, simple in structure, part is few, manufacturing and maintenance cost is low, working life is extremely long and the wide planetary gear stepless speed changing structure of slewing range.
The utility model can be realized through following technological scheme: design a kind of planetary gear stepless speed changing structure; Comprise gear ring, rotatable planetary carrier and sun gear; Described gear ring is connected with the motor car engine power input shaft; Sun gear is connected with pto, and several planetary pinions are installed on the described planetary carrier, and described planetary pinion is connected with the power adjustment control gear that can change planetary pinion speed; Described power adjustment control gear comprises control power input shaft and the control gear that is arranged on control power input shaft one end, and described control gear is connected with planetary pinion.
As the utility model preferred version one: said power adjustment control gear also includes control motor and the adjusting gear that is installed on the control power input shaft; The control motor includes motor shaft and gear, and described motor gear is connected with adjusting gear on controlling power input shaft.Its principle is that the power resources of control power input shaft are provided by motor, thereby the electrodeless variable-speed of motor is realized the electrodeless variable-speed of planet wheel.
As the improvement to such scheme: described control motor is connected with key control unit on the automobile.
As the utility model preferred version two: described power adjustment control gear also includes gear that is installed on the motor car engine power input shaft and the adjusting gear that is installed on the control power input shaft, and described gear is connected with adjusting gear.Its principle is to control the power resources of power input shaft in motor, and the change of engine speed drives the change of planet wheel speed.
As the utility model preferred version three: described power adjustment control gear also includes gear that is installed on the motor car engine pto and the adjusting gear that is installed on the control power input shaft, and described gear is connected with adjusting gear.Its principle is to control the power resources of power input shaft in output shaft (promptly relevant with the speed of a motor vehicle).
As the utility model preferred version four: described power adjustment control gear also includes the adjusting gear that is installed on the control power input shaft, is installed in first unilateral bearing and second unilateral bearing on motor car engine power input shaft and the motor car engine pto respectively; Between first unilateral bearing and second unilateral bearing, be provided with coupling shaft; Be provided with gear at coupling shaft, described gear is connected with adjusting gear.Its principle is that the power of control power input shaft derives from motor or output shaft simultaneously.
As the utility model preferred version five: described power adjustment control gear also includes independent control motor and the adjusting gear that is installed on the control power input shaft; Be connected with gear on the output shaft on the independent control motor, described gear is connected with adjusting gear.Its principle is control power input shaft power resources in motor independently.By independently engine drives planet wheel rotation.The change of star wheel rotate speed is carried out in change through the self-contained engine rotating speed, from the control that realizes electrodeless variable-speed.The self-contained engine outputting power realizes the control of electrodeless variable-speed that except being used to the power of returning master motor brings positive adding, so the kinetic equation loss of self-contained engine is very little.The self-contained engine controlling schemes is the ideal scheme that the utility model is recommended.
As further improvement: on the described control power input shaft hydraulic moment variator is installed to above-mentioned five schemes.Its role is to overload-resistant and shock resistance that automobile is quickened is more steady.
The utility model planetary gear stepless speed changing structure utilizes planetary gear construction to carry out rapid change, and there is certain fixed proportion relation in it through the rotating speed between planetary pinion, gear ring, the sun gear.As power input shaft, sun gear is as pto with gear ring for the utility model, and through the rotational velocity of change planetary gear set, thereby the velocity ratio of change gear ring and sun gear realizes electrodeless variable-speed.The electrodeless variable-speed of the utility model is extremely long working life, reduces maintenance cost, the few low cost of manufacture of part, and slewing range is big.
The utility model planetary gear stepless speed changing structure has following beneficial effect:
A) the little electrodeless variable-speed of kinetic equation loss;
B) electrodeless variable-speed of no skidding;
C) gearbox of long service life;
D) acceleration is more steady;
E) oil consumption is little;
F) maintenance cost is low;
G) slewing range is big;
H) can bear high pulling torque, be applicable to various full-sized cars.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model planetary gear stepless speed changing structure;
Accompanying drawing 2 is adjusting embodiment one structural representation of the control power input shaft of the utility model planetary gear stepless speed changing structure;
Accompanying drawing 3 is adjusting embodiment two structural representations of the control power input shaft of the utility model planetary gear stepless speed changing structure;
Accompanying drawing 4 is adjusting embodiment three structural representations of the control power input shaft of the utility model planetary gear stepless speed changing structure;
Accompanying drawing 5 is adjusting embodiment four structural representations of the control power input shaft of the utility model planetary gear stepless speed changing structure;
Accompanying drawing 6 is adjusting embodiment five structural representations of the control power input shaft of the utility model planetary gear stepless speed changing structure.
Embodiment
To combine Figure of description to come the utility model is further described below:
Shown in accompanying drawing 1; The utility model discloses a kind of planetary gear stepless speed changing structure; Comprise fixed gear ring 2, rotatable planetary carrier 8 and sun gear 3, described gear ring 2 is connected with motor car engine power input shaft 1, and sun gear 3 is connected with pto; Several planetary pinions 4 are installed on the described planetary carrier 8; Described planetary pinion 4 is connected with the power adjustment control gear that can change planetary pinion 4 rate conversion, and described power adjustment control gear comprises control power input shaft 7 and the control gear 5 that is arranged on control power input shaft 7 one ends, and described control gear 5 is connected with planetary pinion 4.On the described control power input shaft 7 hydraulic moment variator 6 is installed.Because the special construction of planetary pinion combination, change the speed of planet wheel, sun gear 3 is also followed change with the velocity ratio of gear ring 2, realizes the planet wheel electrodeless variable-speed electrodeless variable-speed of sun gear 3 and gear ring 2 velocity ratios just.According to this principle, the utility model provides five schemes that realize the planet wheel electrodeless variable-speed.Wherein self-contained engine drive planet wheel is that the utility model is recommended optimal case.The engine speed change scope is big, and rotating speed is controlled easily.Therefore self-contained engine is the most desirable as the variable-speed dynamic source.Below introduce five solutions respectively.
Embodiment one
As shown in Figure 2; Said power adjustment control gear also includes control motor 21 and the adjusting gear 71 that is installed on the control power input shaft 7; Control motor 21 includes motor shaft 22 and gear 9, and described motor gear 23 is connected with adjusting gear 71 on controlling power input shaft 7.This mode of execution as power resources, is realized the change of Control Shaft speed with motor through the change of electrical motor gearshift degree.Described control motor 21 is connected with key control unit on the automobile.Its principle is that the power resources of control power input shaft are provided by motor, thereby the electrodeless variable-speed of motor is realized the electrodeless variable-speed of planet wheel.
Embodiment two
As shown in Figure 3, described power adjustment control gear also includes gear 9 that is installed on the motor car engine power input shaft 1 and the adjusting gear 71 that is installed on the control power input shaft 7, and described gear 9 is connected with adjusting gear 71.As power resources, when engine speed changed, Control Shaft speed also changed this mode of execution thereupon with the power input shaft of motor.Its principle is to control the power resources of power input shaft in motor, and the change of engine speed drives the change of planet wheel speed.
Embodiment three
As shown in Figure 4, described power adjustment control gear also includes gear 9 that is installed on the motor car engine pto 12 and the adjusting gear 71 that is installed on the control power input shaft 7, and described gear 9 is connected with adjusting gear 71.This mode of execution is power resources with the pto of motor, when the speed of a motor vehicle changes, realizes the rapid change of Control Shaft.Its principle is to control the power resources of power input shaft in output shaft (promptly relevant with the speed of a motor vehicle).
Embodiment four
As shown in Figure 5; Described power adjustment control gear also includes and is installed in the adjusting gear 71 of control on the power input shaft 7, is installed in first unilateral bearing 16 and second unilateral bearing 17 on motor car engine power input shaft 1 and the motor car engine pto 12 respectively; Between first unilateral bearing 16 and second unilateral bearing 17, be provided with coupling shaft 18; Be provided with gear 9 at coupling shaft 18, described gear 9 is connected with adjusting gear 71.This mode of execution with simultaneously with the input shaft of motor and output shaft as power resources, input shaft is connected with unilateral bearing respectively with output shaft, high-revolving end quick-action Control Shaft rotation.Its principle is that the power of control power input shaft derives from motor or output shaft simultaneously.
Embodiment five
As shown in Figure 6; Described power adjustment control gear also includes independent control motor 31 and the adjusting gear 71 that is installed on the control power input shaft 7; Be connected with gear 9 on the output shaft on the independent control motor 31, described gear 9 is connected with adjusting gear 71.This mode of execution with tiny engine independently as power resources.When engine speed changes, thereby Control Shaft also changes the control of real electrodeless variable-speed thereupon.Its principle is control power input shaft power resources in motor independently.By independently engine drives planet wheel rotation.The change of star wheel rotate speed is carried out in change through the self-contained engine rotating speed, from the control that realizes electrodeless variable-speed.The self-contained engine outputting power realizes the control of electrodeless variable-speed that except being used to the power of returning master motor brings positive adding, so the kinetic equation loss of self-contained engine is very little.The self-contained engine controlling schemes is the ideal scheme that the utility model is recommended.
The above is merely the preferred embodiment of the utility model, is not the utility model is done any pro forma restriction; But the those of ordinary skill of all industry is all implemented the utility model with the above shown in the by specification accompanying drawing swimmingly; But all professional and technical personnel of being familiar with the above technology contents that is disclosed capable of using and a little change of making, modify the equivalent variations with differentiation in not breaking away from the utility model technological scheme scope, be the equivalent embodiment of the utility model; Simultaneously, all essence technology according to the utility model to the change of any equivalent variations that above embodiment did, modify with differentiation etc., all still belong within the protection domain of technological scheme of the utility model.
Claims (8)
1. planetary gear stepless speed changing structure; Comprise gear ring (2), rotatable planetary carrier (8) and sun gear (3); Described gear ring (2) is connected with motor car engine power input shaft (1); Sun gear (3) is connected with pto; Several planetary pinions (4) are installed on the described planetary carrier (8); It is characterized in that: described planetary pinion (4) is connected with the power adjustment control gear that can change planetary pinion (4) speed, and described power adjustment control gear comprises control power input shaft (7) and be arranged on the control gear (5) of control power input shaft (7) one ends that described control gear (5) is connected with planetary pinion (4).
2. planetary gear stepless speed changing structure according to claim 1; It is characterized in that: said power adjustment control gear also includes control motor (21) and is installed in the adjusting gear (71) on the control power input shaft (7); Control motor (21) includes motor shaft (22) and gear (9), and described motor gear (23) is connected with adjusting gear (71) on controlling power input shaft (7).
3. planetary gear stepless speed changing structure according to claim 2 is characterized in that: described control motor (21) is connected with key control unit on the automobile.
4. planetary gear stepless speed changing structure according to claim 1; It is characterized in that: described power adjustment control gear also includes the gear (9) that is installed on the motor car engine power input shaft (1) and is installed in the adjusting gear (71) on the control power input shaft (7), and described gear (9) is connected with adjusting gear (71).
5. planetary gear stepless speed changing structure according to claim 1; It is characterized in that: described power adjustment control gear also includes the gear (9) that is installed on the motor car engine pto (12) and is installed in the adjusting gear (71) on the control power input shaft (7), and described gear (9) is connected with adjusting gear (71).
6. planetary gear stepless speed changing structure according to claim 1; It is characterized in that: described power adjustment control gear also includes the adjusting gear (71) that is installed in control power input shaft (7), is installed in first unilateral bearing (16) and second unilateral bearing (17) on motor car engine power input shaft (1) and the motor car engine pto (12) respectively; Between first unilateral bearing (16) and second unilateral bearing (17), be provided with coupling shaft (18); Be provided with gear (9) at coupling shaft (18), described gear (9) is connected with adjusting gear (71).
7. planetary gear stepless speed changing structure according to claim 1; It is characterized in that: described power adjustment control gear also includes independent control motor (31) and is installed in the adjusting gear (71) on the control power input shaft (7); Be connected with gear (9) on the output shaft on the independent control motor (31), described gear (9) is connected with adjusting gear (71).
8. according to the described planetary gear stepless speed changing structure of each claim of claim 1～7, it is characterized in that: hydraulic moment variator (6) is installed on the described control power input shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200027123U CN202381630U (en) | 2012-01-05 | 2012-01-05 | Continuously variable transmission structure of planetary gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200027123U CN202381630U (en) | 2012-01-05 | 2012-01-05 | Continuously variable transmission structure of planetary gears |
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| Publication Number | Publication Date |
|---|---|
| CN202381630U true CN202381630U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200027123U Expired - Fee Related CN202381630U (en) | 2012-01-05 | 2012-01-05 | Continuously variable transmission structure of planetary gears |
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| CN (1) | CN202381630U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537238A (en) * | 2012-01-05 | 2012-07-04 | 宏万兵 | Stepless speed change structure for planetary gears |
| CN106122377A (en) * | 2016-06-29 | 2016-11-16 | 杨亦勇 | A kind of single direction rotation device realizing big corner high torque |
| CN108068985A (en) * | 2016-11-18 | 2018-05-25 | 北京轻客智能科技有限责任公司 | The electric vehicle using motor of this device of stepless speed change device and application |
-
2012
- 2012-01-05 CN CN2012200027123U patent/CN202381630U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537238A (en) * | 2012-01-05 | 2012-07-04 | 宏万兵 | Stepless speed change structure for planetary gears |
| CN106122377A (en) * | 2016-06-29 | 2016-11-16 | 杨亦勇 | A kind of single direction rotation device realizing big corner high torque |
| CN108068985A (en) * | 2016-11-18 | 2018-05-25 | 北京轻客智能科技有限责任公司 | The electric vehicle using motor of this device of stepless speed change device and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20130105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |