CN102840286A

CN102840286A - Infinitely variable transmission for planetary gear

Info

Publication number: CN102840286A
Application number: CN 201110172129
Authority: CN
Inventors: 顾愈宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-24
Filing date: 2011-06-24
Publication date: 2012-12-26

Abstract

The invention relates to a mechanical transmission, in particular to an infinitely variable transmission for a planetary gear. The infinitely variable transmission mainly comprises one group of planetary gears, a worm gear, a worm, a friction transmission and the like, wherein a star wheel bracket is fixedly connected with the worm gear; and the transmission is used for controlling the rotating speed of the worm; and a planetary gear set is an execution device for the transmission. The infinitely variable transmission can be realized while high-power driving is carried out and the skidding is avoided. The infinitely variable transmission is wide in variable range and high in overload capacity. The infinitely variable transmission has respective advantages of vehicular CVT (Continuously Variable Transmission) and transmission gear boxes and is simpler and more reliable.

Description

The planetary pinion buncher

Technical field

The present invention relates to a kind of mechanical transmission, particularly a kind ofly relate to planetary buncher.

Background technique

In the existing technology, be used for the buncher of vehicle, CVT for example, employing be friction transmission mode, power transmits not as gear-shift transmission.And adopt gear-driven buncher, and of practical novel C N201739449U, replace clutch, break in the gear-box with arrangements for speed regulation; Its deficiency is that the arrangements for speed regulation load is very heavy, needs enough big fluid power or electric power support.In fact rub speed changer and speed-changing gear box has his own strong points and deficiency, is difficult to take into account.

Summary of the invention

The object of the invention provides a kind of buncher of two types of specialities simple in structure, sturdy and durable, integrated.The present invention makes up polytype gear, and forming with the planetary pinion is main buncher, attains the results expected, and has reached purpose.In this technological scheme,

A kind of planetary pinion buncher mainly is made up of primary shaft, central gear, planetary pinion and support, follower, worm gear, worm screw, speed changer etc.

Worm gear is fixedly connected with planetary gear carrier.Speed changer one end is connected with primary shaft, and the other end is connected with worm screw.

Speed changer mainly is made up of friction parts such as disk, friction wheel, cone pulleys.Be fixed on the friction wheel on the guide pin bushing, can on guide rod that cooperates or axle, endwisely slip rotation synchronously.

Perhaps worm gear is fixedly connected with central gear or follower.

The planetary pinion buncher also comprises actuating motor, is used to control speed changer.Perhaps cancel speed changer, worm screw is by driven by servomotor.Perhaps replace actuating motor by hydraulic pressure installation.

Worm screw and speed changer can be installed on the movable support, manually perhaps follow loaded automatic gearshift.

A notable feature of worm and gear is that power can not reversely transmit.And to withdraw from this reverse lockup state, and making the worm gear rotation, the driving worm screw reversing of promptly taking advantage of a situation is withdrawed from, and does not but need very big power, and load is very light; Can be at driving under the pressure yet.The rotational speed of control worm screw, the friction type mechanical pole-free speed variator, low-power machine are enough to be competent at.

Central gear, planetary pinion and support, follower are formed typical planet gear transmission system.Primary shaft, central gear are fixedly connected.Planetary gear carrier is fixed on the worm gear.Control worm screw, the just rotation status of ability control gear support; And speed can be regulated continuously; Even in the process that power transmits also is like this.The support of rotation and the relative velocity of central gear change, and equal to have changed planetary pinion, central gear gear ratio; Both reached the purpose of electrodeless variable-speed, again without detriment to the gear transmission advantage.When support is identical with the central gear sense of rotation, when rotating ratio equaled star-wheel, central gear gear ratio, secondary speed was zero; When worm screw was not rotated, planetary gear carrier just was in the lock state, the follower high speed rotating.

Worm gear, worm screw and one group of planetary pinion are the isolation and the actuating device of speed changer, in high-power transmission, and also level and smooth speed change, bearing capacity is very big, can not skid.In running, no matter come the ultromotivity or the fluctuation of load, can reversely not cross worm screw influences speed changer or motor.

The less buncher of other types suitable power also can be selected for use.

Adopt mode indirect securement such as guiding principle property or elastic coupling flexible coupling or gear to connect support and worm gear, effect is constant.

Except that planetary gear carrier, central gear or follower are fixedly connected with worm gear, also can obtain identical effect.

In the manual application of perhaps following loaded automatic gearshift of needs, worm screw and speed changer can be installed on the support of an activity, and support is coaxial with worm gear, presets backpressure; Can overcome angle of pressure rotation with worm gear, obtain the shift length that needs.Speed changer one end links to each other with primary shaft.When on axle, having external torque to pack into, under the situation that the follower bringing onto load does not rotate temporarily, worm gear will drive the support displacement, and shift length is relevant with the load size; Utilize this section to move distance, just can regulate the speed changer on the support, change the rotating ratio of central gear and follower, increase the follower starting torque; Start back poppet and reset gradually, reach the self-shifting purpose.Concrete structure has the spring of movable rod, drag-line, set pressure etc.

The present invention is the gear drive of a kind of ability stepless time adjustment, and the beneficial effect of being obtained is that significantly in light weight, slewing range is wide, and overload capacity is big.Not only have automobile-used CVT, speed-changing gear box advantage separately simultaneously, and more simple and reliable.

Description of drawings

Fig. 1: planetary pinion buncher sketch

Among the figure: 1, primary shaft; 2, central gear; 3, planet pin; 4, planetary pinion; 5, follower; 6, worm screw; 7, worm gear; 8, variator discs; 9, friction wheel; 10, guide rod.

Fig. 2: automatically controlled buncher sketch

Among the figure: 21, central gear and axle; 22, planetary gear carrier; 23, planetary pinion; 24, follower; 25, worm screw; 26, worm gear; 27: motor.

Fig. 3: bicycle buncher sketch

Among the figure: 30, axle; 31, follower; 32, planetary pinion; 33, central gear; 34, worm gear; 35, worm screw; 36, cone pulley; 37, positive stop key; 38, friction wheel; 39, sprocket wheel.

Fig. 4: travel(l)ing rest schematic representation

Among the figure: 41, travel(l)ing rest; 42, speed control rod; 43, cone pulley; 44, extension spring; 45, worm screw; 46, friction wheel.

Embodiment

As shown in Figure 1, primary shaft 1, central gear 2, variator discs 8 are fixedly connected; Planet pin 3, worm gear 7 are fixedly connected, and worm gear 7 serves as planetary support; Friction wheel 9 comprises guide pin bushing and is fixed on friction wheel and the controlling rod on the guide pin bushing, can on guide rod 10, slide, and rotate synchronously with guide rod 10; Guide rod 10 drives worm screw 6 through the umbrella gear transition.Friction wheel 9 is pressed on the card of variator discs 8, with variator discs 8 rotations; Rotating speed becomes thereupon when on guide rod 10, sliding; Drive worm gear 7 rotations, planet pin 3 revolution through guide rod 10, worm screw 6; Planetary pinion 4 rotations meanwhile send the power from central gear 2, drive follower 5 rotations.

Friction wheel 9 can manually be controlled, also can be automatically controlled, promptly use low-power machine, and carry out instruction from microcomputer.In the running, the variation of power or load, can reversely not cross worm screw influences speed changer.

Planetary pinion buncher shown in Figure 2 has been cancelled the friction type mechanical pole-free speed variator, and worm screw is by motor driving.Power drives follower 24 rotations through central gear 21, the planetary pinion 23 that is fixed on the axle; Planetary gear carrier 22, worm gear 26 are fixedly connected; Motor 27 drives worm screw 25 rotations.Electrical motor gearshift is controlled sensitivity, and regulation range is wideer.

Fig. 3 is the bicycle buncher.Axle 30 is the pedal shafts that connect, and sprocket wheel 39 is fixedly connected with follower 31, and central gear 33 is fixedly connected with worm gear 34; Cone pulley 36 is cone friction wheels; Positive stop key 37 can endwisely slip and rotate synchronously with axle 30 friction wheel 38 on axle 30; Friction wheel 38, cone pulley 36, worm screw 35, worm gear 34 are formed the electrodeless variable-speed core apparatus.Planet pin is fixed on the axle 30, during axle 30 rotations, drives planetary pinion 32 revolution; The autorotation of planetary pinion 32 is relevant with worm gear 34; Axle 30, the rotating ratio of central gear 33 define the rotational speed of follower 31 and sprocket wheel 39.Move friction wheel 38, just can electrodeless variable-speed.

Fig. 4 is the travel(l)ing rest schematic representation.When being used, has the function of following loaded automatic gearshift with bicycle buncher shown in Figure 3.Speed control rod 42, cone pulley 43, worm screw 45 are installed on the travel(l)ing rest 41.Speed control rod 42 is crank-connecting rods, and an end is fixed, and the other end is connected with friction wheel 46; 44 pairs of travel(l)ing rests of extension spring apply reset response power.The external torque input is arranged on axle, and under the situation that the follower bringing onto load does not rotate temporarily, worm gear will drive the support displacement, and speed control rod 42 interlocks make friction wheel 46 move to cone pulley 43 tops; The speed of a motor vehicle is the slowest, and torque is maximum; In the process that bicycle starting and acceleration, travel(l)ing rest 41 reset, speed control rod 42 returns, and friction wheel 46 is to the same moved further in cone pulley 43 bottoms; And under the effect of extension spring equilibrant, realize automatic speed changing.

Claims

1. a planetary pinion buncher mainly is made up of primary shaft, central gear, planetary pinion and support, follower, worm gear, worm screw, speed changer etc., and it is characterized in that: worm gear is fixedly connected with planetary gear carrier; Speed changer one end is connected with primary shaft, and the other end is connected with worm screw.

2. a kind of according to claim 1 planetary pinion buncher, it is characterized in that: speed changer mainly is made up of friction parts such as friction wheel, disk or cone pulleys; Be fixed on the friction wheel on the guide pin bushing, can on guide rod that cooperates or axle, endwisely slip rotation synchronously.

3. a kind of according to claim 1 planetary pinion buncher is characterized in that: perhaps worm gear is fixedly connected with central gear or follower.

4. a kind of according to claim 1 planetary pinion buncher is characterized in that: also comprise actuating motor, be used to control speed changer; Perhaps cancel speed changer, worm screw is by driven by servomotor; Perhaps replace actuating motor by hydraulic pressure installation.

5. a kind of according to claim 1 planetary pinion buncher is characterized in that: worm screw and speed changer can be installed on the movable support.