CN204572958U

CN204572958U - A kind of differential speed regulation planet gear stageless speed variator

Info

Publication number: CN204572958U
Application number: CN201520221646.2U
Authority: CN
Inventors: 张志康; 谢斌; 石祥鹏; 朱建
Original assignee: Nanjing Kang Ni Precision Optical Machinery Co Ltd
Current assignee: Nanjing Kang Ni Precision Optical Machinery Co Ltd
Priority date: 2015-04-13
Filing date: 2015-04-13
Publication date: 2015-08-19
Anticipated expiration: 2025-04-13

Abstract

The utility model relates to a kind of differential speed regulation planet gear stageless speed variator, is composed in series differential gear train by two-stage planetary mechanism, and first order internal gear inputs, and first order sun gear and first order planet carrier export; First order planet carrier is connected with second level sun gear, and first order sun gear is connected with second level planet carrier; Second level internal gear exports.Rotation speed control mechanism is provided with between first order planetary mechanism and second level planetary mechanism, the input end of rotation speed control mechanism connects speed-adjustable motor, output terminal is connected on the coupling shaft of first order sun gear and second level planet carrier, is provided with gear between the input end of rotation speed control mechanism and output terminal.For realizing vehicle gearbox function, be also provided with third level planetary mechanism, third level sun gear is connected with second level internal gear, and third level planet carrier Integral design has clutch and break.After adopting such design, have that transmission of power is continuous, gear-driven efficiency is high, volume is little, quality is light, control is convenient and the advantage of applied range.

Description

A kind of differential speed regulation planet gear stageless speed variator

Technical field

The utility model relates to gearbox field, especially relates to a kind of differential speed regulation planet gear stageless speed variator.

Background technique

As everyone knows, the assessment of comprehensive vehicle performance, not only depends on motor, also depends on transmission performance to a great extent and coordinates with motor and the quality of dynamic regulation.The speed changer that current automobile uses can be categorized as: manual transmission and the large class of automatic transmission two.Have: MT(manual transmission) and AT, AMT, DSG, CVT etc. (automatic transmission), and hybrid vehicle ECVT etc.Except CVT and ECVT, remaining speed changer all has level, is disconnect at speed-change process medium power, exists and to coordinate with motor and the quality problems of dynamic regulation, can produce impact when mating bad.Due to the fast development of electronic technology, automatic gearbox also develops very fast, has been the developing direction of automotive transmission.But hydraudynamic drive efficiency is low; Other automatic transmission, complex structure, manufacture cost are high, maintenance difficult, and expensive is undisputable fact.And the core technology of automatic gearbox is external monopolization.

Vapour stepless speed variator of vehicle has been the product that since automobile comes out, people pursue always.Its reason be can with automobile dynamic system perfect matching, improve the usability of automobile, there is many advantages such as energy-saving and environmental protection, speed change are steady, simple to operate.Existing auto continuously variable transmission CVT, combined by steel band (or chain), friction wheel and hydraulic system, owing to being friction driving, transmission power is little, applies restricted, uses many at present on automobile with small output volumn.Therefore, study a kind of performance restriction that can break through friction mechanism and seem particularly important with the stepless speed variator also can applied on the automobile that power is larger.

Summary of the invention

The technical problems to be solved in the utility model is that a kind of power transmits continuously, gear ratio is high, transferring power ability strong, the stepless speed variator of applied range in design.

For solving the problems of the technologies described above, differential speed regulation planet gear stageless speed variator of the present utility model is composed in series differential gear train by two-stage planetary mechanism, first order planetary mechanism comprises first order internal gear, first order sun gear, first order planet wheel and first order planet carrier, first order internal gear is connected for input with input shaft, and first order sun gear and first order planet carrier are for exporting; Second level planetary mechanism comprises second level sun gear, second level planet wheel, second level planet carrier and second level internal gear; First order planet carrier is connected with second level sun gear, and first order sun gear is connected with second level planet carrier; Second level internal gear is connected for export with output shaft.

Further, rotation speed control mechanism is provided with between first order planetary mechanism and second level planetary mechanism, rotation speed control mechanism comprises input end and output terminal, input end connects speed-adjustable motor, output terminal is connected on the coupling shaft of first order sun gear and second level planet carrier, be provided with gear between the input end of rotation speed control mechanism and output terminal, make speed-adjustable motor rotating speed in OK range by gear; Rotation speed control mechanism stepless change is controlled by the speed-adjustable motor be connected with input end; By can the rotating speed of lockable mechanism locking first order sun gear and second level planet carrier coupling shaft, intercept circulating power load and speed governing, thus realize stepless change and Maximum Torque exports and the change of maximum speed output and power-balance.

Further, rotation speed control mechanism pays mechanism by planetary mechanism and turbine, or gear mechanism and can lockable mechanism, or chain-wheel mechanism and can lockable mechanism, or cogged belt mechanism with can be connected its input end and output terminal by lockable mechanism.

The structure of rotation speed control mechanism is: rotation speed control mechanism comprises rotation speed control mechanism first order planetary mechanism, rotation speed control mechanism second level planetary mechanism and worm gear pairs mechanism, and worm gear pairs mechanism comprises worm screw, worm gear and worm shaft bearing; Rotation speed control mechanism first order planetary mechanism comprises rotation speed control mechanism first order sun gear, rotation speed control mechanism first order planet wheel, rotation speed control mechanism first order planet carrier and fixing ring gear, rotation speed control mechanism first order sun gear is connected on the coupling shaft of first order sun gear and second level planet carrier, and rotation speed control mechanism first order planet wheel engages with fixing ring gear; Rotation speed control mechanism second level planetary mechanism comprises rotation speed control mechanism second level sun gear, rotation speed control mechanism second level planet wheel, rotation speed control mechanism second level planet carrier and fixing ring gear, rotation speed control mechanism second level sun gear is connected on the coupling shaft of first order sun gear and second level planet carrier, and rotation speed control mechanism second level planet wheel engages with fixing ring gear; Rotation speed control mechanism first order planet carrier is connected with rotation speed control mechanism second level sun gear, and worm gear and rotation speed control mechanism second level planet carrier connect as one, and are sleeved on the coupling shaft of first order sun gear and second level planet carrier.

Further, fixing ring gear and worm shaft bearing are fixed on the housing of speed changer, and worm screw is connected with speed-adjustable motor.

Further, rotation speed control mechanism first order planet wheel and the same fixing ring gear of rotation speed control mechanism second level planet wheel engagement.

Further, rotation speed control mechanism first order planetary mechanism and first order planetary mechanism can share same sun gear, and namely rotation speed control mechanism first order planet wheel engages with first order sun gear.

Further, rotation speed control mechanism first order planet carrier and the Placement of rotation speed control mechanism second level sun gear be key be connected, sell connect, be threaded, expansion sleeve or spline joint.

The structure of rotation speed control mechanism can also be: rotation speed control mechanism comprises worm gear pairs mechanism and planetary mechanism, worm gear pairs mechanism comprises worm screw, worm gear and worm shaft bearing, planetary mechanism comprises rotation speed control mechanism sun gear, major planets wheel, asteroid wheel, coupling shaft, planet carrier and fixing ring gear or fixing external gear, major planets wheel is connected by coupling shaft with asteroid wheel, is arranged on planet carrier; Major planets wheel engages with rotation speed control mechanism sun gear; Asteroid wheel engages with fixing ring gear or fixing external gear, rotation speed control mechanism sun gear is connected on the coupling shaft of first order sun gear and second level planet carrier, the planet carrier of worm gear and planetary mechanism connects as one, and is sleeved on the coupling shaft of first order sun gear and second level planet carrier.

Further, fix the housing that ring gear or fixing external gear and worm shaft bearing are fixed on speed changer, worm screw is connected with speed-adjustable motor.

Further, planetary mechanism and the first order planetary mechanism of rotation speed control mechanism can share same sun gear, and namely the major planets wheel of planetary mechanism engages with first order sun gear.

The structure of rotation speed control mechanism can also be: rotation speed control mechanism comprises gear mechanism and can lockable mechanism, input end and the output terminal of rotation speed control mechanism realize speed change by gear transmission, the gear of output end of rotation speed control mechanism is connected on the coupling shaft of first order sun gear and second level planet carrier, and the gear shaft of the input end gear of rotation speed control mechanism is connected with speed-adjustable motor; Rotation speed control mechanism by can lockable mechanism realize to first order sun gear and second level planet carrier coupling shaft can locking and speed governing.

The structure of rotation speed control mechanism can also be: rotation speed control mechanism comprises gearwheel, small gear, gear band and can lockable mechanism, the gear shaft of gearwheel is connected with speed-adjustable motor, small gear is connected on the coupling shaft of first order sun gear and second level planet carrier, and gearwheel is connected by gear band with small gear; Rotation speed control mechanism by can lockable mechanism realize to first order sun gear and second level planet carrier coupling shaft can locking and speed governing.

The structure of rotation speed control mechanism can also be: rotation speed control mechanism comprises hinge wheel, minor sprocket, chain and can lockable mechanism, the sprocket shaft of hinge wheel is connected with speed-adjustable motor, minor sprocket is connected on the coupling shaft of first order sun gear and second level planet carrier, and hinge wheel is connected by chain with minor sprocket; Rotation speed control mechanism by can lockable mechanism realize to first order sun gear and second level planet carrier coupling shaft can locking and speed governing.

The structure of rotation speed control mechanism can also be: rotation speed control mechanism comprises bevel gear mechanism and can lockable mechanism, input end and the output terminal of rotation speed control mechanism realize speed change by bevel gear drive, the output terminal bevel gear of rotation speed control mechanism is connected on the coupling shaft of first order sun gear and second level planet carrier, and the gear shaft of the input end bevel gear of rotation speed control mechanism is connected with speed-adjustable motor; Rotation speed control mechanism by can lockable mechanism realize to first order sun gear and second level planet carrier coupling shaft can locking and speed governing.

Further, first order planet carrier and the Placement of second level sun gear be that key is connected, sells connection, is threaded, expansion sleeve or spline joint.

Further, first order sun gear and the Placement of second level planet carrier be key be connected, sell connect, be threaded, expansion sleeve or spline joint.

Further, first order internal gear comprises input shaft and ring gear, and second level internal gear comprises output shaft and ring gear, and input shaft and ring gear, output shaft and ring gear are that integral type is connected or split type connection.

Further, input shaft is spline joint with ring gear, output shaft and the split type Placement of ring gear, key is connected, bolt connects, expansion sleeve or pin connect.

Further, differential speed regulation planet gear stageless speed variator of the present utility model is also provided with third level planetary mechanism, clutch and can lockable mechanism, third level planetary mechanism comprises third level sun gear, third level planet wheel, third level planet carrier and third level internal gear, and third level sun gear is connected with second level internal gear.

Further, third level planet carrier Integral design has clutch and can lockable mechanism, realizes the forward gears of speed changer, neutral gear and reverse gear function.

Further, third level internal gear comprises output shaft and ring gear, and output shaft and ring gear are that integral type is connected or split type connection.

Further, output shaft is spline joint with the split type Placement of ring gear, key is connected, bolt connects, expansion sleeve or pin connect.

The beneficial effects of the utility model: after adopting such design, speed-change process is continuous print stepless change, and transmission of power can not be interrupted; Gear-driven efficiency is higher, overcomes the restriction of friction driving, and the ability of transferring power is stronger; Compact structure, volume is little, quality is light; Automation servocontrol is convenient; Applied range, can meet the requirement of various gear; Wide market.

Accompanying drawing explanation

Below in conjunction with accompanying drawing embodiment of the present utility model done and illustrate further.

Fig. 1 (a) is the principle schematic of the differential speed regulation planet gear stageless speed variator in embodiment 1;

Fig. 1 (b) is the principle schematic that embodiment 1 medium speed control mechanism first order planetary mechanism and first order planetary mechanism share the differential speed regulation planet gear stageless speed variator of sun gear;

Fig. 2 (a) is the principle schematic of the differential speed regulation planet gear stageless speed variator in embodiment 2;

Fig. 2 (b) is the principle schematic that the planetary mechanism of embodiment 2 medium speed control mechanism and first order planetary mechanism share the differential speed regulation planet gear stageless speed variator of sun gear;

Fig. 2 (c) fixes the principle schematic that external gear substitutes the differential speed regulation planet gear stageless speed variator of fixing ring gear in the planetary mechanism of embodiment 2 medium speed control mechanism;

Fig. 3 is the principle schematic of the differential speed regulation planet gear stageless speed variator in embodiment 3;

Fig. 4 is the principle schematic of the differential speed regulation planet gear stageless speed variator in embodiment 4;

Fig. 5 is the principle schematic of the differential speed regulation planet gear stageless speed variator in embodiment 5;

Fig. 6 (a) is the principle schematic being added with the differential speed regulation planet gear stageless speed variator of third level planetary mechanism and clutch and lockable mechanism in embodiment 6;

Fig. 6 (b) is the structural representation being added with the differential speed regulation planet gear stageless speed variator of third level planetary mechanism and clutch and lockable mechanism in embodiment 6;

Fig. 7 is the power match schematic diagram of differential speed regulation planet gear stageless speed variator of the present utility model;

Fig. 8 (a) is differential speed regulation planet gear stageless speed variator of the present utility model front two-stage planetary mechanism each parts sense of rotation schematic diagram when rotation speed control mechanism does not work;

Fig. 8 (b) is differential speed regulation planet gear stageless speed variator of the present utility model front two-stage planetary mechanism each parts sense of rotation schematic diagram when rotation speed control mechanism works;

Fig. 9 (a) be in embodiment 6 be added with the differential speed regulation planet gear stageless speed variator neutral gear of third level planetary mechanism and clutch and lockable mechanism time third level planetary mechanism each parts sense of rotation schematic diagram;

Fig. 9 (b) be in embodiment 6 be added with the differential speed regulation planet gear stageless speed variator reverse gear of third level planetary mechanism and clutch and lockable mechanism time third level planetary mechanism each parts sense of rotation schematic diagram;

Fig. 9 (c) be in embodiment 6 be added with the differential speed regulation planet gear stageless speed variator forward gears of third level planetary mechanism and clutch and lockable mechanism time third level planetary mechanism each parts sense of rotation schematic diagram.

1, housing 2, clutch shaft bearing group 3, little axle 4, second bearing pack 5, worm screw 6, worm gear 7, second level planet carrier 8, second level internal gear 9, second level planet wheel 10, second level sun gear 11, can lockable mechanism 12, third level planet carrier 13, clutch 14, first order internal gear 15, first order planet carrier 16, first order sun gear

17, first order planet wheel 18, mandrel 19, major planets wheel 20, fixing ring gear 21, asteroid wheel 22, supporting frame 23, third level sun gear 24, third level planet wheel 25, third level internal gear 26, rotation speed control mechanism sun gear

27, rotation speed control mechanism first order sun gear 28, rotation speed control mechanism first order planet wheel 29, rotation speed control mechanism first order planet carrier 30, rotation speed control mechanism second level sun gear 31, rotation speed control mechanism second level planet wheel 32, rotation speed control mechanism second level planet carrier 33, fixing external gear 101, first gear 102, second gear 103, 3rd gear 201, small gear 202, gearwheel 301, first bevel gear 302, second bevel gear.

Embodiment

In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

embodiment 1

Composition graphs 1(a), differential speed regulation planet gear stageless speed variator of the present utility model is composed in series differential gear train by two-stage planetary mechanism, first order planetary mechanism comprises first order internal gear 14, first order sun gear 16, first order planet wheel 17 and first order planet carrier 15, first order internal gear 14 is connected for input with input shaft, and first order sun gear 16 and first order planet carrier 15 are for exporting; Second level planetary mechanism comprises second level sun gear 10, second level planet wheel 9, second level planet carrier 7 and second level internal gear 8; First order planet carrier 15 is connected with second level sun gear 10, and first order sun gear 16 is connected with second level planet carrier 7; Second level internal gear 8 is connected for export with output shaft.

Rotation speed control mechanism is provided with between first order planetary mechanism and second level planetary mechanism, rotation speed control mechanism comprises input end and output terminal, input end connects speed-adjustable motor, output terminal is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, be provided with gear between the input end of rotation speed control mechanism and output terminal, make speed-adjustable motor rotating speed in OK range by gear; Rotation speed control mechanism stepless change is controlled by the speed-adjustable motor be connected with input end; By can the rotating speed of lockable mechanism locking first order sun gear 16 and second level planet carrier 7 coupling shaft, intercept circulating power load and speed governing, thus realize stepless change and Maximum Torque exports and the change of maximum speed output and power-balance.

First order internal gear 14 input power, by first order planet carrier 15---second level sun gear 10 and first order sun gear 16---second level planet carrier 7 inputs second level planetary mechanism; Exported by the second level internal gear 8 of second level planetary mechanism.Transport characteristics according to planetary mechanism is determined, first order sun gear 16---the transmission of second level planet carrier 7 is little moment of torsion speedup, and the transmission of first order planet carrier 15---second level sun gear 10 is that high pulling torque slows down; At first order sun gear 16---be designed with rotation speed control mechanism in second level planet carrier 7, controlled the rotating speed of first order sun gear 16 by speed-adjustable motor.

Rotation speed control mechanism comprises rotation speed control mechanism first order planetary mechanism, rotation speed control mechanism second level planetary mechanism and worm gear pairs mechanism, and worm gear pairs mechanism comprises worm screw 5, worm gear 6 and worm shaft bearing; Rotation speed control mechanism first order planetary mechanism comprises rotation speed control mechanism first order sun gear 27, rotation speed control mechanism first order planet wheel 28, rotation speed control mechanism first order planet carrier 29 and fixing ring gear 20, rotation speed control mechanism first order sun gear 27 is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, and rotation speed control mechanism first order planet wheel 28 engages with fixing ring gear 20; Rotation speed control mechanism second level planetary mechanism comprises rotation speed control mechanism second level sun gear 30, rotation speed control mechanism second level planet wheel 31, rotation speed control mechanism second level planet carrier 32 and fixing ring gear 20, rotation speed control mechanism second level sun gear 30 is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, and rotation speed control mechanism second level planet wheel 31 engages with fixing ring gear 20; Rotation speed control mechanism first order planet carrier 29 is connected with rotation speed control mechanism second level sun gear 30, and worm gear 6 and rotation speed control mechanism second level planet carrier 32 connect as one, and are sleeved on the coupling shaft of first order sun gear 16 and second level planet carrier 7.Fixing ring gear 20 and worm shaft bearing are fixed on the housing 1 of speed changer, and worm screw 5 is connected with speed-adjustable motor.Rotation speed control mechanism first order planet carrier 29 and the Placement of rotation speed control mechanism second level sun gear 30 be key be connected, sell connect, be threaded, expansion sleeve or spline joint.In the present embodiment, rotation speed control mechanism first order planet wheel 28 and rotation speed control mechanism second level planet wheel 31 engage same fixing ring gear 20.

First order planet carrier 15 and the Placement of second level sun gear 10 are that key is connected, sells connection, is threaded, expansion sleeve or spline joint.

First order sun gear 16 and the Placement of second level planet carrier 7 be key be connected, sell connect, be threaded, expansion sleeve or spline joint.

First order internal gear 14 comprises input shaft and ring gear, and second level internal gear 8 comprises output shaft and ring gear, and input shaft and ring gear, output shaft and ring gear are that integral type is connected or split type connection.

Input shaft is spline joint with ring gear, output shaft and the split type Placement of ring gear, key is connected, bolt connects, expansion sleeve or pin connect.

According to the transport characteristics of planetary mechanism, two the planetary differential train series connection of first order planetary mechanism and the second Hang Ji star mechanism, constitute Maximum Torque export and maximum speed export the superposition drive train combined, under the control of rotation speed control mechanism, realize Maximum Torque respectively and export and maximum speed output.

Power input time, transmission of power can have two paths: inputted by first order internal gear 14()---first order planet carrier 15---second level sun gear 10---second level internal gear 8(exports) and first order internal gear 14(input)---first order sun gear 16---second level planet carrier 7---second level internal gear 8(exports).

Inputted by first order internal gear 14()---first order planet carrier 15---second level sun gear 10---second level internal gear 8(exports) what transmit is low-speed big path; Inputted by first order internal gear 14()---first order sun gear 16---second level planet carrier 7---second level internal gear 8(exports) what transmit is low moment of torsion height rotating speed path.

In the transmission of planet differential gear train, when input power is definite value, linear velocity and torque must observe lower routine relation: (wherein a is sun gear, and b is internal gear, and h is planet carrier, a1 is first order sun gear, b1 is first order internal gear, and h1 is first order planet carrier, and a2 is second level sun gear, b2 is second level internal gear, and h2 is second level planet carrier):

V _a+ V _b+ V _h=0; n _a+ n _b(Z _b/ Z _a)+(1+Z _b/ Z _a) n _h=0 (kinematical equation)

T _a+ T _b+ T _h=0; T _a: T _b: T _h=1:(Z _b/ Z _a): (1+Z _b/ Z _a) (kinetic equations)

When input speed one timing, after the rotating speed of an adjustment driving component, the rotating speed of another driving component adjusts automatically; Because speed-adjustable motor can stepless speed regulation, so the rotating speed of another driving component also adjusts automatically, and must be stepless change; Second level planetary mechanism is made to have two infinite variable speed inputs; Under the control of rotation speed control mechanism, realize the adjustment of rotating speed and the partition equilibrium of power, thus reach the variable transmission object of second level planetary mechanism output.

Rotating speed and the torque relationship formula that the utility model superposes the constrained input of drive train can be obtained by above-mentioned relation formula.

Kinematics analysis:

n _b1=Z _a1/Z _b1(n _a1+(1+Z _b1/z _a1)n _h1)

n _b2=Z _a2/Z _b2(n _a2+(1+Z _b2/Z _a2)n _h2)

The rotation speed relation formula of the constrained input of superimposed motion train:

n _b2=(Z _a2/Z _b2)(n _a2+(1+Z _b2/Z _a2)n _h2)

=(Z _a2/Z _b2)(n _b1(Z _b1/Z _a1)/(1+Z _b1/Z _a1)+n _a1(1+Z _b2/Z _a2-1/(1+Z _b1/Z _a1)))

Dynamic analysis:

T _b= (Z _b/ Z _a) T _a=T _h(Z _b/ Z _a)/(1+ Z _b/ Z _a)

T _b= (Z _b/ Z _a) (T _a+T _h/(1+ Z _b/ Z _a) ) /2

The torque relationship formula of the constrained input of superimposed motion train:

T _b2= (Z _b2/ Z _a2) (T _a2+T _h2/(1+ Z _b2/ Z _a2) ) /2

= T _b1(Z _b2/ Z _a2) (Z _b1/ Z _a1) (1/(1+Z _b1/Z _a1)+ 1/ (1+ Z _b2/ Z _a2) ) /2

Composition graphs 7 is known: 1. oblique line illustrates in the idle situation of rotation speed control mechanism, and speed changer is power stage state when double reduction large torque low speed works.3. 2. oblique line illustrate with oblique line when rotation speed control mechanism work, the situation of superimposed motion train two-way power transimission change, makes two differential gear train composition Maximum Torques outputs and maximum speed export the superposition drive train combined.Total power transimission is the superposition of curve, realizes power division and automatically adjusts.

Original state, rotation speed control mechanism does not work, and because worm screw 5 does not work, pays the latching characteristics of mechanism according to turbine, and fixing ring gear 20 is fixed, make first order sun gear 16 and second level planet carrier 7 locked, i.e. n _a1=n _h2=0, transmission of power is only inputted by first order internal gear 14()---first order planet carrier 15---second level sun gear 10---second level internal gear 8(exports), speed changer is in double reduction large torque low speed working state.The output sense of rotation of second level internal gear 8 is contrary with the direction of input first order internal gear 14, and now, each parts of two-stage planetary mechanism specifically turns to as shown in Figure 8 (a).

When rotation speed control mechanism works, worm screw 5 works, now transmission of power has two paths synthesis: under the control of rotation speed control mechanism, along with first order sun gear 16---second level planet carrier 7 controls the progressively raising of rotating speed, first order planet carrier 15---second level sun gear 10 transmission rotating speed progressively reduces; Along with first order sun gear 16---second level planet carrier 7 controls the progressively reduction of rotating speed, first order planet carrier 15---second level sun gear 10 transmission rotating speed progressively improves.Output is rotating speed and the moment of torsion of two paths synthesis, and speed changer is in the drive state of superimposed motion train.---second level planet carrier 7 rotating speed changes, and makes first order planet carrier 15---second level sun gear 10 rotating speed generation differential speed regulation when first order sun gear 16, thus make speed changer be in stepless change.Due to first order sun gear 16---the sense of rotation of second level planet carrier 7 output speed is contrary with input first order internal gear 14 direction, identical with the output rotation direction of second level internal gear 8, thus realize cvt output and the hypervelocity function of second level internal gear 8, now, each parts of two-stage planetary mechanism specifically turns to as shown in Figure 8 (b) shows.

The effect of rotation speed control mechanism: make two differential gear train composition Maximum Torques outputs and maximum speed export the superimposed motion train combined, under rotation speed control mechanism controls, realize conversion and the power-balance of Maximum Torque output and maximum speed output.Make speed-adjustable motor rotating speed in OK range by gear; Rotation speed control mechanism stepless change is controlled by the speed-adjustable motor be connected with input end; By can the rotating speed of lockable mechanism locking first order sun gear 16 and second level planet carrier 7 coupling shaft, intercept circulating power load and speed governing, thus realize stepless change and Maximum Torque exports and the change of maximum speed output and power-balance.

Composition graphs 1(b), the present embodiment medium speed control mechanism first order planetary mechanism and first order planetary mechanism can share same sun gear, and namely rotation speed control mechanism first order planet wheel 28 engages with first order sun gear 16.

embodiment 2

Composition graphs 2(a), differential speed regulation planet gear stageless speed variator of the present utility model is composed in series differential gear train by two-stage planetary mechanism, first order planetary mechanism comprises first order internal gear 14, first order sun gear 16, first order planet wheel 17 and first order planet carrier 15, first order internal gear 14 is connected for input with input shaft, and first order sun gear 16 and first order planet carrier 15 are for exporting; Second level planetary mechanism comprises second level sun gear 10, second level planet wheel 9, second level planet carrier 7 and second level internal gear 8; First order planet carrier 15 is connected with second level sun gear 10, and first order sun gear 16 is connected with second level planet carrier 7; Second level internal gear 8 is connected for export with output shaft.

Rotation speed control mechanism comprises worm gear pairs mechanism and planetary mechanism, worm gear pairs mechanism comprises worm screw 5, worm gear 6 and worm shaft bearing, planetary mechanism comprises rotation speed control mechanism sun gear 26, major planets wheel 19, asteroid wheel 21, coupling shaft, planet carrier and fixing ring gear 20, major planets wheel 19 is connected by coupling shaft with asteroid wheel 21, is arranged on planet carrier; Major planets wheel 19 engages with rotation speed control mechanism sun gear 26; Asteroid wheel 21 engages with fixing ring gear 20, rotation speed control mechanism sun gear 26 is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, worm gear 6 connects as one with the planet carrier of planetary mechanism, is sleeved on the coupling shaft of first order sun gear 16 and second level planet carrier 7.Fixing ring gear 20 and worm shaft bearing are fixed on the housing 1 of speed changer, and worm screw 5 is connected with speed-adjustable motor.

Kinematics analysis:

n _b1=Z _a1/Z _b1(n _a1+(1+Z _b1/z _a1)n _h1)

n _b2=Z _a2/Z _b2(n _a2+(1+Z _b2/Z _a2)n _h2)

n _b2=(Z _a2/Z _b2)(n _a2+(1+Z _b2/Z _a2)n _h2)

Dynamic analysis:

T _b= (Z _b/ Z _a) T _a=T _h(Z _b/ Z _a)/(1+ Z _b/ Z _a)

T _b= (Z _b/ Z _a) (T _a+T _h/(1+ Z _b/ Z _a) ) /2

T _b2= (Z _b2/ Z _a2) (T _a2+T _h2/(1+ Z _b2/ Z _a2) ) /2

Original state, rotation speed control mechanism does not work, and because worm screw 5 does not work, pays the characteristic of mechanism's self-locking according to turbine, and the fixing ring gear of planetary mechanism 20 is fixed, make first order sun gear 16 and second level planet carrier 7 locked, i.e. n _a1=n _h2=0, transmission of power is only inputted by first order internal gear 14()---first order planet carrier 15---second level sun gear 10---second level internal gear 8(exports), speed changer is in double reduction large torque low speed working state.The output sense of rotation of second level internal gear 8 is contrary with the direction of input first order internal gear 14, and now, each parts of two-stage planetary mechanism specifically turns to as shown in Figure 8 (a).

Composition graphs 2(b), planetary mechanism and the first order planetary mechanism of the present embodiment medium speed control mechanism can share same sun gear, and namely the major planets wheel 19 of planetary mechanism engages with first order sun gear 16.

Composition graphs 2(c), fixing ring gear 20 in the planetary mechanism of the present embodiment medium speed control mechanism can be substituted by fixing external gear 33, and asteroid wheel 21 engages with fixing external gear 33, and fixing external gear 33 and worm shaft bearing are fixed on the housing 1 of speed changer.

embodiment 3

Composition graphs 3, differential speed regulation planet gear stageless speed variator of the present utility model is composed in series differential gear train by two-stage planetary mechanism, first order planetary mechanism comprises first order internal gear 14, first order sun gear 16, first order planet wheel 17 and first order planet carrier 15, first order internal gear 14 is connected for input with input shaft, and first order sun gear 16 and first order planet carrier 15 are for exporting; Second level planetary mechanism comprises second level sun gear 10, second level planet wheel 9, second level planet carrier 7 and second level internal gear 8; First order planet carrier 15 is connected with second level sun gear 10, and first order sun gear 16 is connected with second level planet carrier 7; Second level internal gear 8 is connected for export with output shaft.

Rotation speed control mechanism comprises gear mechanism and can lockable mechanism 11, input end and the output terminal of rotation speed control mechanism realize speed change by gear transmission, the gear of output end of rotation speed control mechanism is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, and the gear shaft of the input end gear of rotation speed control mechanism is connected with speed-adjustable motor; Rotation speed control mechanism by can lockable mechanism 11 realize to first order sun gear 16 and second level planet carrier 7 coupling shaft can locking.In the present embodiment, first gear 101 is gear of output end, be connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, second gear 102 engages with the first gear 101,3rd gear 103 is input end gear, the gear shaft of the 3rd gear 103 is connected with speed-adjustable motor, and the 3rd gear 103 engages with the second gear 102, can lockable mechanism 11 by can locking the 3rd gear 103 and realize to first order sun gear 16 and second level planet carrier 7 coupling shaft can locking and speed governing.

According to the transport characteristics of planetary mechanism, first order planetary mechanism and two the planetary differential train series connection of second level planetary mechanism, constitute Maximum Torque export and maximum speed export the superposition drive train combined, under the control of rotation speed control mechanism, realize Maximum Torque respectively and export and maximum speed output.

Kinematics analysis:

n _b1=Z _a1/Z _b1(n _a1+(1+Z _b1/z _a1)n _h1)

n _b2=Z _a2/Z _b2(n _a2+(1+Z _b2/Z _a2)n _h2)

n _b2=(Z _a2/Z _b2)(n _a2+(1+Z _b2/Z _a2)n _h2)

Dynamic analysis:

T _b= (Z _b/ Z _a) T _a=T _h(Z _b/ Z _a)/(1+ Z _b/ Z _a)

T _b= (Z _b/ Z _a) (T _a+T _h/(1+ Z _b/ Z _a) ) /2

T _b2= (Z _b2/ Z _a2) (T _a2+T _h2/(1+ Z _b2/ Z _a2) ) /2

Original state, rotation speed control mechanism does not work, due to rotation speed control mechanism can lockable mechanism 11 locking first order sun gear 16 and second level planet carrier 7 coupling shaft, make first order sun gear 16 and second level planet carrier 7 locked, i.e. n _a1=n _h2=0, transmission of power is only inputted by first order internal gear 14()---first order planet carrier 15---second level sun gear 10---second level internal gear 8(exports), speed changer is in double reduction large torque low speed working state.The output sense of rotation of second level internal gear 8 is contrary with the direction of input first order internal gear 14, and now, each parts of two-stage planetary mechanism specifically turns to as shown in Figure 8 (a).

When rotation speed control mechanism works, rotation speed control mechanism can remove locking to first order sun gear 16 and second level planet carrier 7 coupling shaft by lockable mechanism 11, now transmission of power has two paths synthesis: under the control of rotation speed control mechanism, along with first order sun gear 16---second level planet carrier 7 controls the progressively raising of rotating speed, first order planet carrier 15---second level sun gear 10 transmission rotating speed progressively reduces; Along with first order sun gear 16---second level planet carrier 7 controls the progressively reduction of rotating speed, first order planet carrier 15---second level sun gear 10 transmission rotating speed progressively improves.Output is rotating speed and the moment of torsion of two paths synthesis, and speed changer is in the drive state of superimposed motion train.---second level planet carrier 7 rotating speed changes, and makes first order planet carrier 15---second level sun gear 10 rotating speed generation differential speed regulation when first order sun gear 16, thus make speed changer be in stepless change.Due to first order sun gear 16---the sense of rotation of second level planet carrier 7 output speed is contrary with input first order internal gear 14 direction, identical with the output rotation direction of second level internal gear 8, thus realize cvt output and the hypervelocity function of second level internal gear 8, now, each parts of two-stage planetary mechanism specifically turns to as shown in Figure 8 (b) shows.

Certainly; the input end of rotation speed control mechanism and the setting of gear of output end are not limited to the present embodiment; every by gear mechanism realize the input end of rotation speed control mechanism and the speed change of output terminal and by can lockable mechanism 11 pairs of first order sun gears 16 and second level planet carrier 7 coupling shaft can the design of locking, all fall into the protection domain of the application.

embodiment 4

Composition graphs 4, differential speed regulation planet gear stageless speed variator of the present utility model is composed in series differential gear train by two-stage planetary mechanism, first order planetary mechanism comprises first order internal gear 14, first order sun gear 16, first order planet wheel 17 and first order planet carrier 15, first order internal gear 14 is connected for input with input shaft, and first order sun gear 16 and first order planet carrier 15 are for exporting; Second level planetary mechanism comprises second level sun gear 10, second level planet wheel 9, second level planet carrier 7 and second level internal gear 8; First order planet carrier 15 is connected with second level sun gear 10, and first order sun gear 16 is connected with second level planet carrier 7; Second level internal gear 8 is connected for export with output shaft.

Rotation speed control mechanism comprises gearwheel 202, small gear 201, gear band and can lockable mechanism 11, the gear shaft of gearwheel 202 is connected with speed-adjustable motor, small gear 201 is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, and gearwheel 202 is connected by gear band with small gear 201; Rotation speed control mechanism by can lockable mechanism 11 realize to first order sun gear 16 and second level planet carrier 7 coupling shaft can locking and speed governing.

Kinematics analysis:

n _b1=Z _a1/Z _b1(n _a1+(1+Z _b1/z _a1)n _h1)

n _b2=Z _a2/Z _b2(n _a2+(1+Z _b2/Z _a2)n _h2)

n _b2=(Z _a2/Z _b2)(n _a2+(1+Z _b2/Z _a2)n _h2)

Dynamic analysis:

T _b= (Z _b/ Z _a) T _a=T _h(Z _b/ Z _a)/(1+ Z _b/ Z _a)

T _b= (Z _b/ Z _a) (T _a+T _h/(1+ Z _b/ Z _a) ) /2

T _b2= (Z _b2/ Z _a2) (T _a2+T _h2/(1+ Z _b2/ Z _a2) ) /2

When rotation speed control mechanism works, rotation speed control mechanism can remove locking to first order sun gear 16 and second level planet carrier 7 coupling shaft by lockable mechanism 11, now transmission of power has two paths synthesis: by under the control of rotation speed control mechanism, along with first order sun gear 16---second level planet carrier 7 controls the progressively raising of rotating speed, first order planet carrier 15---second level sun gear 10 transmission rotating speed progressively reduces; Along with first order sun gear 16---second level planet carrier 7 controls the progressively reduction of rotating speed, first order planet carrier 15---second level sun gear 10 transmission rotating speed progressively improves.Output is rotating speed and the moment of torsion of two paths synthesis, and speed changer is in the drive state of superimposed motion train.---second level planet carrier 7 rotating speed changes, and makes first order planet carrier 15---second level sun gear 10 rotating speed generation differential speed regulation when first order sun gear 16, thus make speed changer be in stepless change.Due to first order sun gear 16---the sense of rotation of second level planet carrier 7 output speed is contrary with input first order internal gear 14 direction, identical with the output rotation direction of second level internal gear 8, thus realize cvt output and the hypervelocity function of second level internal gear 8, now, each parts of two-stage planetary mechanism specifically turns to as shown in Figure 8 (b) shows.

Certainly, the gearwheel 202 of the present embodiment medium speed control mechanism, small gear 201 and gear band can be replaced by hinge wheel, minor sprocket and chain respectively, the sprocket shaft of hinge wheel is connected with speed-adjustable motor, minor sprocket is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, and hinge wheel is connected by chain with minor sprocket; Rotation speed control mechanism by can lockable mechanism 11 realize to first order sun gear 16 and second level planet carrier 7 coupling shaft can locking and speed governing.

embodiment 5

Composition graphs 5, differential speed regulation planet gear stageless speed variator of the present utility model is composed in series differential gear train by two-stage planetary mechanism, first order planetary mechanism comprises first order internal gear 14, first order sun gear 16, first order planet wheel 17 and first order planet carrier 15, first order internal gear 14 is connected for input with input shaft, and first order sun gear 16 and first order planet carrier 15 are for exporting; Second level planetary mechanism comprises second level sun gear 10, second level planet wheel 9, second level planet carrier 7 and second level internal gear 8; First order planet carrier 15 is connected with second level sun gear 10, and first order sun gear 16 is connected with second level planet carrier 7; Second level internal gear 8 is connected for export with output shaft.

Rotation speed control mechanism comprises bevel gear mechanism and can lockable mechanism 11, input end and the output terminal of rotation speed control mechanism realize speed change by bevel gear drive, the output terminal bevel gear of rotation speed control mechanism is connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, and the gear shaft of the input end bevel gear of rotation speed control mechanism is connected with speed-adjustable motor; Rotation speed control mechanism by can lockable mechanism 11 realize to first order sun gear 16 and second level planet carrier 7 coupling shaft can locking.In the present embodiment, first bevel gear 301 is output terminal bevel gear, be connected on the coupling shaft of first order sun gear 16 and second level planet carrier 7, second bevel gear 302 is input end bevel gear, the gear shaft of the second bevel gear 302 is connected with speed-adjustable motor, second bevel gear 302 engages with the first bevel gear 301, can lockable mechanism 11 by can locking second bevel gear 302 and realize to first order sun gear 16 and second level planet carrier 7 coupling shaft can locking and speed governing.

Kinematics analysis:

n _b1=Z _a1/Z _b1(n _a1+(1+Z _b1/z _a1)n _h1)

n _b2=Z _a2/Z _b2(n _a2+(1+Z _b2/Z _a2)n _h2)

n _b2=(Z _a2/Z _b2)(n _a2+(1+Z _b2/Z _a2)n _h2)

Dynamic analysis:

T _b= (Z _b/ Z _a) T _a=T _h(Z _b/ Z _a)/(1+ Z _b/ Z _a)

T _b= (Z _b/ Z _a) (T _a+T _h/(1+ Z _b/ Z _a) ) /2

T _b2= (Z _b2/ Z _a2) (T _a2+T _h2/(1+ Z _b2/ Z _a2) ) /2

Certainly; the input end of rotation speed control mechanism and the setting of gear of output end are not limited to the present embodiment; every by bevel gear mechanism realize the input end of rotation speed control mechanism and the speed change of output terminal and by can lockable mechanism 11 pairs of first order sun gears 16 and second level planet carrier 7 coupling shaft can the design of locking, all fall into the protection domain of the application.

embodiment 6

Composition graphs 6(a) and Fig. 6 (b), for meeting the usage requirement of automotive transmission, differential speed regulation planet gear stageless speed variator of the present utility model is on the basis of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4 or embodiment 5, also be provided with third level planetary mechanism, clutch 13 and can lockable mechanism 11, third level planetary mechanism comprises third level sun gear 23, third level planet wheel 24, third level planet carrier 12 and third level internal gear 25, third level sun gear 23 is connected with second level internal gear 8, speed changer is made to comprise first order planetary mechanism, rotation speed control mechanism, second level planetary mechanism, clutch, can six parts such as lockable mechanism 11 and third level planetary mechanism, every one-level planetary mechanism is equipped with the clutch shaft bearing group 2 supporting this grade of internal gear and housing 1 and rotate, support little axle 3 that this grade of planet wheel be connected with planet carrier and support the second bearing pack 4 that this grade of planet wheel and little axle 3 rotate.Supporting frame 22 connects housing 1, for supporting the output shaft of row star mechanism at different levels.The present embodiment arranges third level planetary mechanism, clutch 13 and can lockable mechanism 11 on the basis of embodiment 2.

Third level planet carrier 12 Integral design has clutch 13 and can lockable mechanism 11, realizes the forward gears of speed changer, neutral gear and reverse gear function.

Third level internal gear 25 comprises output shaft and ring gear, and output shaft and ring gear are that integral type is connected or split type connection.

Output shaft is spline joint with the split type Placement of ring gear, key is connected, bolt connects, expansion sleeve or pin connect.

Power inputs third level planetary mechanism by the output member second level internal gear 8 of second level planetary mechanism by third level sun gear 23, in the present embodiment, third level planet carrier 12 Integral design has clutch 13 and can lockable mechanism 11, realize the neutral gear of speed changer, reverse gear and forward gears function, have following three kinds of working staties like this:

When clutch and can in all idle situation of lockable mechanism 11, power inputs, and because third level planet wheel 24 dallies, third level internal gear 25 does not export, speed changer is in neutral state, and now each parts of third level planetary mechanism specifically turn to as shown in Fig. 9 (a);

When clutch does not work, during brake operation, n _h3=0; Power inputs, third level internal gear 25 slows down and reverses, namely the sense of rotation of third level internal gear 25 is contrary with the sense of rotation of second level internal gear 8, and rotation speed control mechanism controlled variator is in speed change reverse gear working state, and now each parts of third level planetary mechanism specifically turn to as shown in Figure 9 (b);

When clutch work, can lockable mechanism 11 when not working, the self-locking of third level planetary mechanism, third level internal gear 25 exports the output being second level internal gear 8, namely the sense of rotation of third level internal gear 25 is identical with the sense of rotation of second level internal gear 8, rotation speed control mechanism controlled variator is in speed change forward gears working state, and now each parts of third level planetary mechanism specifically turn to as shown in Figure 9 (c).

Certainly; the present embodiment be only arrange on the basis of embodiment 2 third level planetary mechanism, clutch 13 and can lockable mechanism 11 to realize the function of vehicular transmission; it is to be noted; the basis of the similar or equivalent structure design of embodiment 1 or embodiment 3 or embodiment 4 or embodiment 5 or previous embodiment arranges third level planetary mechanism, clutch 13 and can the design of lockable mechanism 11, all falls into the protection domain of the application.

Claims

1. a differential speed regulation planet gear stageless speed variator, it is characterized in that: be composed in series differential gear train by two-stage planetary mechanism, first order planetary mechanism comprises first order internal gear (14), first order sun gear (16), first order planet wheel (17) and first order planet carrier (15), first order internal gear (14) is connected for input with input shaft, and first order sun gear (16) and first order planet carrier (15) are for exporting; Second level planetary mechanism comprises second level sun gear (10), second level planet wheel (9), second level planet carrier (7) and second level internal gear (8); First order planet carrier (15) is connected with second level sun gear (10), and first order sun gear (16) is connected with second level planet carrier (7); Second level internal gear (8) is connected for export with output shaft.

2. differential speed regulation planet gear stageless speed variator according to claim 1, it is characterized in that: between described first order planetary mechanism and second level planetary mechanism, be provided with rotation speed control mechanism, described rotation speed control mechanism comprises input end and output terminal, input end connects speed-adjustable motor, output terminal is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), be provided with gear between the input end of described rotation speed control mechanism and output terminal, make speed-adjustable motor rotating speed in OK range by gear; Rotation speed control mechanism stepless change is controlled by the speed-adjustable motor be connected with input end; By can the rotating speed of lockable mechanism locking first order sun gear (16) and second level planet carrier (7) coupling shaft, intercept circulating power load and speed governing, thus realize stepless change and Maximum Torque exports and the change of maximum speed output and power-balance.

3. differential speed regulation planet gear stageless speed variator according to claim 2, it is characterized in that: described rotation speed control mechanism pays mechanism by planetary mechanism and turbine, or gear mechanism and can lockable mechanism, or chain-wheel mechanism and can lockable mechanism, or cogged belt mechanism with can be connected its input end and output terminal by lockable mechanism.

4. differential speed regulation planet gear stageless speed variator according to claim 3, it is characterized in that: described rotation speed control mechanism comprises rotation speed control mechanism first order planetary mechanism, rotation speed control mechanism second level planetary mechanism and worm gear pairs mechanism, described worm gear pairs mechanism comprises worm screw (5), worm gear (6) and worm shaft bearing; Described rotation speed control mechanism first order planetary mechanism comprises rotation speed control mechanism first order sun gear (27), rotation speed control mechanism first order planet wheel (28), rotation speed control mechanism first order planet carrier (29) and fixing ring gear (20), described rotation speed control mechanism first order sun gear (27) is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), and described rotation speed control mechanism first order planet wheel (28) is engaged with described fixing ring gear (20); Described rotation speed control mechanism second level planetary mechanism comprises rotation speed control mechanism second level sun gear (30), rotation speed control mechanism second level planet wheel (31), rotation speed control mechanism second level planet carrier (32) and fixing ring gear (20), described rotation speed control mechanism second level sun gear (30) is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), and described rotation speed control mechanism second level planet wheel (31) is engaged with described fixing ring gear (20); Described rotation speed control mechanism first order planet carrier (29) is connected with described rotation speed control mechanism second level sun gear (30), described worm gear (6) and described rotation speed control mechanism second level planet carrier (32) connect as one, and are sleeved on the coupling shaft of first order sun gear (16) and second level planet carrier (7).

5. differential speed regulation planet gear stageless speed variator according to claim 4, is characterized in that: described fixing ring gear (20) and described worm shaft bearing are fixed on the housing (1) of speed changer, and (5) are connected with speed-adjustable motor to described worm screw.

6. differential speed regulation planet gear stageless speed variator according to claim 4, is characterized in that: described rotation speed control mechanism first order planet wheel (28) and described rotation speed control mechanism second level planet wheel (31) engage same fixing ring gear (20).

7. differential speed regulation planet gear stageless speed variator according to claim 4, it is characterized in that: described rotation speed control mechanism first order planetary mechanism and described first order planetary mechanism can share same sun gear, namely described rotation speed control mechanism first order planet wheel (28) is engaged with described first order sun gear (16).

8. differential speed regulation planet gear stageless speed variator according to claim 4, is characterized in that: described rotation speed control mechanism first order planet carrier (29) and the Placement of described rotation speed control mechanism second level sun gear (30) be key be connected, sell connect, be threaded, expansion sleeve or spline joint.

9. differential speed regulation planet gear stageless speed variator according to claim 3, it is characterized in that: described rotation speed control mechanism comprises worm gear pairs mechanism and planetary mechanism, described worm gear pairs mechanism comprises worm screw (5), worm gear (6) and worm shaft bearing, described planetary mechanism comprises rotation speed control mechanism sun gear (26), major planets wheel (19), asteroid wheel (21), coupling shaft, planet carrier and fixing ring gear (20) or fixing external gear (33), major planets wheel (19) is connected by coupling shaft with asteroid wheel (21), is arranged on planet carrier; Major planets wheel (19) engages with rotation speed control mechanism sun gear (26); Asteroid wheel (21) engages with fixing ring gear (20) or fixing external gear (33), described rotation speed control mechanism sun gear (26) is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), described worm gear (6) connects as one with the planet carrier of described planetary mechanism, is sleeved on the coupling shaft of first order sun gear (16) and second level planet carrier (7).

10. differential speed regulation planet gear stageless speed variator according to claim 9, it is characterized in that: described fixing ring gear (20) or fixing external gear (33) and described worm shaft bearing are fixed on the housing (1) of speed changer, and (5) are connected with speed-adjustable motor to described worm screw.

11. differential speed regulation planet gear stageless speed variators according to claim 9, it is characterized in that: planetary mechanism and the described first order planetary mechanism of described rotation speed control mechanism can share same sun gear, namely major planets wheel (19) of described planetary mechanism engages with described first order sun gear (16).

12. differential speed regulation planet gear stageless speed variators according to claim 3, it is characterized in that: described rotation speed control mechanism comprises gear mechanism and can lockable mechanism (11), input end and the output terminal of described rotation speed control mechanism realize speed change by gear transmission, the gear of output end of described rotation speed control mechanism is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), and the gear shaft of the input end gear of described rotation speed control mechanism is connected with described speed-adjustable motor; Described rotation speed control mechanism by described can lockable mechanism (11) realize to first order sun gear (16) and second level planet carrier (7) coupling shaft can locking and speed governing.

13. differential speed regulation planet gear stageless speed variators according to claim 3, it is characterized in that: described rotation speed control mechanism comprises gearwheel (202), small gear (201), gear band and can lockable mechanism (11), the gear shaft of described gearwheel (202) is connected with described speed-adjustable motor, described small gear (201) is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), and described gearwheel (202) is connected by described gear band with small gear (201); Described rotation speed control mechanism by described can lockable mechanism (11) realize to first order sun gear (16) and second level planet carrier (7) coupling shaft can locking and speed governing.

14. differential speed regulation planet gear stageless speed variators according to claim 3, it is characterized in that: described rotation speed control mechanism comprises hinge wheel, minor sprocket, chain and can lockable mechanism (11), the sprocket shaft of described hinge wheel is connected with described speed-adjustable motor, described minor sprocket is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), and described hinge wheel is connected by described chain with minor sprocket; Described rotation speed control mechanism by described can lockable mechanism (11) realize to first order sun gear (16) and second level planet carrier (7) coupling shaft can locking and speed governing.

15. differential speed regulation planet gear stageless speed variators according to claim 3, it is characterized in that: described rotation speed control mechanism comprises bevel gear mechanism and can lockable mechanism (11), input end and the output terminal of described rotation speed control mechanism realize speed change by bevel gear drive, the output terminal bevel gear of described rotation speed control mechanism is connected on the coupling shaft of first order sun gear (16) and second level planet carrier (7), and the gear shaft of the input end bevel gear of described rotation speed control mechanism is connected with described speed-adjustable motor; Described rotation speed control mechanism by described can lockable mechanism (11) realize to first order sun gear (16) and second level planet carrier (7) coupling shaft can locking and speed governing.

16. differential speed regulation planet gear stageless speed variators according to claim 1, is characterized in that: described first order planet carrier (15) and the Placement of described second level sun gear (10) are that key is connected, sells connection, is threaded, expansion sleeve or spline joint.

17. differential speed regulation planet gear stageless speed variators according to claim 1, is characterized in that: described first order sun gear (16) and the Placement of described second level planet carrier (7) be key be connected, sell connect, be threaded, expansion sleeve or spline joint.

18. differential speed regulation planet gear stageless speed variators according to claim 1, it is characterized in that: described first order internal gear (14) comprises input shaft and ring gear, described second level internal gear (8) comprises output shaft and ring gear, and described input shaft and ring gear, output shaft and ring gear are that integral type is connected or split type connection.

19. differential speed regulation planet gear stageless speed variators according to claim 18, is characterized in that: described input shaft is spline joint with ring gear, output shaft and the split type Placement of ring gear, key is connected, bolt connects, expansion sleeve or pin connect.

20. differential speed regulation planet gear stageless speed variators according to any one of claim 1-19, it is characterized in that: be also provided with third level planetary mechanism, clutch (13) and can lockable mechanism (11), described third level planetary mechanism comprises third level sun gear (23), third level planet wheel (24), third level planet carrier (12) and third level internal gear (25), and described third level sun gear (23) is connected with described second level internal gear (8).

21. differential speed regulation planet gear stageless speed variators according to claim 20, it is characterized in that: described third level planet carrier (12) Integral design has clutch (13) and can lockable mechanism (11), realizes the forward gears of speed changer, neutral gear and reverse gear function.

22. differential speed regulation planet gear stageless speed variators according to claim 20, is characterized in that: described third level internal gear (25) comprises output shaft and ring gear, and described output shaft and ring gear are that integral type is connected or split type connection.

23. differential speed regulation planet gear stageless speed variators according to claim 22, is characterized in that: described output shaft is spline joint with the split type Placement of ring gear, key is connected, bolt connects, expansion sleeve or pin connect.