CN102661367B

CN102661367B - Compound planetary transmission stepless speed changer

Info

Publication number: CN102661367B
Application number: CN201210153400.7A
Authority: CN
Inventors: 吴志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-11
Filing date: 2005-11-11
Publication date: 2014-09-17
Anticipated expiration: 2025-11-11
Also published as: CN102661367A

Abstract

The invention provides a compound planetary transmission stepless speed changer, and aims to prolong the service life of an engine and the service life of a transmission system. The key point of the technical scheme is that the stepless speed changer comprises an input shaft 1, a controllable torquer 4, a neutral gear and reverse gear mechanism 5, a unidirectional clutch 6 and an output shaft 7, wherein the unidirectional clutch 6 is connected with the input shaft 1; the controllable torquer 4 is connected with the neutral gear and reverse gear mechanism 5; the neutral gear and reverse gear mechanism is connected with the output shaft 7; a plurality of sequentially connected torque increase units 2 are arranged between the input shaft 1 and the output shaft 7; the first torque increase unit 2 is connected with the input shaft 1; one end of a public output element 23 of the first torque increase unit 2 is connected with the unidirectional clutch 6, and the other end of the public output element 23 is connected with the controllable torquer 4 after being connected with the public output elements 23 of other torque increase units 2; the last torque increase unit 2 is connected with the controllable torquer 4; and output elements 22 of the other torque increase units 2 are connected with input elements 21 of next torque increase units 2.

Description

A kind of stepless speed variator of compound planetary

Technical field

The invention belongs to speed changer field, more particularly, it is a kind of stepless speed variator for various surface cars, boats and ships, railway locomotive, engineering machinery, various space flight, aircraft, metallurgy, mine, oil, chemical industry, light industry, food, weaving, handling machinery, lathe, robot and military project.

background technique

At present, conventional stepless speed variator all designs according to principles such as friction, hydrostaticss, and the power that it can transmit is little, and efficiency is not high; In addition, these stepless speed variator complex structures, control trouble, and need by expensive

Material and accurate manufacture could realize, so cost is high.

summary of the invention

The present invention has overcome the deficiencies in the prior art, and is provided a kind of working life that extends motor and power train, simple in structure, controls conveniently low cost, the stepless speed variator of efficient energy-saving.

In order to realize object of the present invention, below the technical solution used in the present invention:

A kind of stepless speed variator of compound planetary, it comprises input shaft (1), torque-controllable device (4), empty reverse gear mechanism (5), overrunning clutch (6), output shaft (7), the output terminal (62) of described overrunning clutch (6) connects with input shaft (1), the output terminal (42) of torque-controllable device (4) connects with the input end (51) of empty reverse gear mechanism (5), the output terminal (52) of empty reverse gear mechanism (5) connects with output shaft (7), between described input shaft (1) and output shaft (7), be provided with the increasing square unit (2) being formed by planet row that several connect successively, described increasing square unit (2) comprises input element (21), output element (22), public output element (23), planetary pinion (24), the input element (21) of first increasing square unit (2) connects with input shaft (1), one end of its public output element (23) connects with the input end (61) of overrunning clutch (6), each public output element (23) that increases square unit (2) connects with the output terminal (42) of torque-controllable device (4) after connecting successively the other end of public output element (23) with all the other, last output element (22) that increases square unit (2) connects with the input end (41) of torque-controllable device (4), all the other increase the output element (22) of square unit (2) and connect with the input element (21) of next increasing square unit (2) separately.

Described increasing square unit (2) is for having planetary gear mechanism, few tooth difference transmission mechanism, cycloidal-pin wheel planetary gearing mechanism or the harmonic gear drive mechanism of performance in the same way, its input element (21) and output element (22) can be small sun gear or the planet carrier of planetary gear mechanism in the same way, and its public output element (23) can only be large sun gear or gear ring; While being elected to above-mentioned few tooth difference transmission mechanism, cycloidal-pin wheel planetary gearing mechanism or harmonic gear drive mechanism, select their elements corresponding with planetary gear mechanism in the same way to form and increase square unit (2), wherein, it is identical that described increasing square unit (2) refers to three element rotary speed directions, when the rotating speed of public output element (23) is zero, the rotary speed direction of output element (22) is constant, be that it is to have the planetary gear mechanism of performance in the same way, i.e. planet row in the same way, and play reduction of speed, increase the effect of square.

Torque-controllable device of the present invention (4) can be selected automatically controlled or hydraulic control friction clutcch.

Torque-controllable device (4), in the situation that having speed discrepancy, can be exported input torque automatically or passively, and wherein, if the torque-controllable device (4) of selecting is coupler or fluid torque converter, it can realize the output of input torque automatically;

If the torque-controllable device (4) of selecting is clutch or oil hydraulic pump and the oil hydraulic motor of various torque-controllables, it need to, by changing the size of electric current or hydraulic pressure under the control of artificial or computer, could realize the output of input torque.

While being applied to vehicle, velocity variations when the present invention can be according to Vehicle Driving Cycle and be subject to drag size, automatically, infinitely changes velocity ratio.

The present invention has advantages of following:

(1) the present invention, except empty reverse gear mechanism, does not have other gear shift and operating mechanism, therefore simple in structure, is conducive to reduce the cost of manufacturing, and is easier to maintenance, and controls conveniently;

(2) the power major part of motor of the present invention is by high efficiency and can transmit powerful increasing square unit (2) and transmit, displacement and speed change are automatically to complete, can realize high efficiency, powerful variable transmission, and except starting, can make motor work in optimum range, compare with other stepless speed variator, under the prerequisite of motor equivalence, it has reduced the manufacture cost of motor:

(3) the present invention, by stepless change, turns round motor in economic speed region, namely in the speed range of very little disposal of pollutants, works, avoided motor when idling and high speed operation, discharge large quantity of exhaust gas, thereby reduced the discharge of waste gas, be conducive to protection of the environment;

(4) the present invention can utilize inner speed discrepancy to play buffering and overload protection, is conducive to extend the working life of motor and power train, in addition, when running resistance increase, can make the automatic reduction of speed of vehicle, otherwise raising speed is conducive to improve the row of vehicle

Sail performance;

(5) the present invention, by stepless change, makes input power uninterrupted, can guarantee that vehicle has good acceleration performance and higher putting down

All the speed of a motor vehicle, reduces the wearing and tearing of motor, has extended interval mileage of major repair, has improved bus dispatching rate, is conducive to boost productivity.

In addition, the present invention is a kind of various surface cars, boats and ships, railway locomotive, engineering machinery, various space flight, aircraft, metallurgy, mine, oil, chemical industry, light industry, food, weaving, handling machinery, lathe, robot of also can be used for

And the stepless speed variator of military project.

accompanying drawing explanation

Fig. 1 is the schematic diagram of the embodiment of the present invention one.

Fig. 2 is the structural drawing of the embodiment of the present invention one.

embodiment

Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:

Embodiment one:

As Fig. 1, shown in Fig. 2, a kind of stepless speed variator of compound planetary, it comprises input shaft 1, torque-controllable device 4, empty reverse gear mechanism 5, overrunning clutch 6, output shaft 7, the output terminal 62 of described overrunning clutch 6 connects with input shaft 1, the output terminal 42 of torque-controllable device 4 connects with the input end 51 of empty reverse gear mechanism 5, the output terminal 52 of empty reverse gear mechanism 5 connects with output shaft 7, between described input shaft 1 and output shaft 7, be provided with three connect successively by thering is the increasing square unit 2 that the planet row of performance forms in the same way, described increasing square unit 2 comprises input element 21, output element 22, public output element 23, planetary pinion 24, the input element 21 of first increasing square unit 2 connects with input shaft 1, each public output element 23 that increases square unit 2 is identity element, share public output element 123, its one end connects with the input end 61 of overrunning clutch 6, the other end connects with the output terminal 42 of torque-controllable device 4, last increases the output element 22 of square unit 2 and the input end 41 of torque-controllable device 4 connects, all the other increase the output element 22 of square unit 2 and connect with the input element 21 of next increasing square unit 2 separately.

Described torque-controllable device (4) can be selected electromagnetic powder clutch.

Increase 2 of square unit and play shunting power, input power splits into two-way by input element 21, wherein, each road power is all unidirectional delivery, one road flows into its public output element 23, share public output element 123, another road its output element of process 22 flows into the input element 21 of the next one increasing square unit 2 that increases therewith 2 connections of square unit, and it repeats above-mentioned shunting process again.

Owing to sharing public output element 123, can change with the rotating speed relations of distribution that each increases the output element 22 of square unit 2, two-way power stream will change according to the variation that rotating speed distributes between the two, when shared public output element 123 rotating speeds are zero, its input power is zero, but moment is non-vanishing, now, each input power that increases the output element 22 of square unit 2 changes to maximum value by certain value, described certain value refers to when each and increases the rotating speed of the output element 22 of square unit 2 and public output element 23 separately when identical, both press the value that planet row torque ratio distributes input power gained, described maximum value refers to motor or goes up separately a total output that increases 2 inputs of square unit, that is to say, when two-way power changes, each output element 22 that increases square unit 2 will play bending moment effect, make it be delivered to separately the next moment that increases square unit 2 after dividing square, be delivered to again public output element 23 separately, the moment sharing on public output element 123 and output shaft 7 also changes thereupon.

The input element 21 that the input power of motor increases square unit 2 through first splits into two-way, one road flows into its public output element 23, share public output element 123, another road flows into second input element 21 that increases square unit 2 through its output element 22, this power splits into two-way again, and repeat above-mentioned shunting process, finally, the power that is delivered to the output element 22 of the 3rd increasing square unit 2 is delivered to the input end 41 of torque-controllable device 4, now, computer is by according to the size of torque-controllable device 4 input torques, control exciting curent, make its output terminal that is delivered to torque-controllable device 4 42 realize and confluxing with the power that shares public output element 123Yi road, through the input end 51 of empty reverse gear mechanism 5, be delivered to again the output terminal 52 of sky reverse gear mechanism 5, namely be delivered to output shaft 7 of the present invention, thereby realized, the power of motor is externally exported by output shaft 7.

For the present invention, when the rotating speed of input shaft 1 constant, moment of torsion on output shaft 7 changes with the variation of its rotating speed, rotating speed is lower, the moment of torsion of output shaft 7 is larger, otherwise, less, thereby realize the present invention, can change with the difference of Vehicle Speed and resistance the stepless speed variator of the compound planetary of moment of torsion.

When the present invention uses, if the input power of motor, input speed and load constant, the rotating speed and the moment of torsion that are input shaft 1 are constant, before vehicle starting, the rotating speed of output shaft 7 is zero, work as automobile starting, because of output shaft 7 transfixions, the power of motor all flows into the output element 22 of first increasing square unit 2, make moment of torsion after its bending moment be greater than the input torque of motor, and be delivered to the next square unit 2 that increases, this element is again because identical reason, again power is all flowed into the output element 22 of this unit, its moment of torsion is increased, and power is all flowed into the next output element 22 that increases square unit 2, and repeat above-mentioned situation, after several increase square unit 2, the output element 22 of last unit passes to torque-controllable device 4 moment of torsion, by empty reverse gear mechanism 5, pass to output shaft 7 again, now, moment of torsion reaches maximum value, moment of torsion when output shaft 7, when power train is transferred to the tractive force producing on driving wheel and is enough to overcome vehicle starting resistance, automobile starts to walk and starts to accelerate, all public output element 23 on the shared public output element 123 being connected with it also increases gradually from zero, now, power is divided into two-way, flowing into each power that increases the output element 22 of square unit 2 reduces gradually, thereby, each increasing square effect that increases the output element 22 of square unit 2 is reduced gradually, the moment of torsion of output shaft 7 reduces along with the increase of rotating speed, when the rotating speed of public output element 23 is identical with the rotating speed of input shaft 1, the output element 22 of each unit is identical with the rotating speed of input element 21 separately, be that speed discrepancy is zero, now, each output element 22 that increases square unit 2 does not recur and increases square effect.

Claims

1. the stepless speed variator of a compound planetary, it comprises input shaft (1), fluid torque converter (4), empty reverse gear mechanism (5), overrunning clutch (6), output shaft (7), the output terminal (62) of described overrunning clutch (6) connects with input shaft (1), the output terminal (42) of fluid torque converter (4) connects with the input end (51) of empty reverse gear mechanism (5), the output terminal (52) of empty reverse gear mechanism (5) connects with output shaft (7), it is characterized in that: between described input shaft (1) and output shaft (7), be provided with the increasing square unit (2) being formed by planet row that several connect successively, described increasing square unit (2) comprises input element (21), output element (22), public output element (23), planetary pinion (24), the input element (21) of first increasing square unit (2) connects with input shaft (1), one end of its public output element (23) connects with the input end (61) of overrunning clutch (6), each public output element (23) that increases square unit (2) connects with the output terminal (42) of fluid torque converter (4) after connecting successively the other end of public output element (23) with all the other, last output element (22) that increases square unit (2) connects with the input end (41) of fluid torque converter (4), all the other increase the output element (22) of square unit (2) and connect with the input element (21) of next increasing square unit (2) separately.

2. stepless speed variator according to claim 1, is characterized in that: described increasing square unit (2) is for having planetary gear mechanism, few tooth difference transmission mechanism, cycloidal-pin wheel planetary gearing mechanism or the harmonic gear drive mechanism of performance in the same way.