CN202371105U

CN202371105U - Stepless speed change mechanism

Info

Publication number: CN202371105U
Application number: CN2011205372407U
Authority: CN
Inventors: 南丁毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-08-08
Anticipated expiration: 2021-12-20

Abstract

The utility model relates to a stepless speed change mechanism. The mechanism comprises an input shaft and an output shaft, wherein the input shaft is meshed with a gear 1; the gear 1 is fixedly connected with a motion decomposition mechanism; the motion decomposition mechanism is connected with a shaft 1 and a shaft 2 respectively; the shaft 1 is fixedly connected with a gear 2; the gear 2 is meshed with a gear 3; the gear 3 is fixedly connected with a shaft 3; the shaft 2 is fixedly connected with a gear 4; the gear 4 is meshed with a gear 5; the gear 5 is fixedly connected with a shaft 4; the shaft 4 and the shaft 3 are connected with a motion synthesis mechanism; the motion synthesis mechanism is fixedly connected with a gear 6; and the gear 6 is meshed with the output shaft. The mechanism has the advantages that gear transmission is adopted, and a speed ratio is automatically adjusted according to the requirement of output torque of the gears, so that the mechanism is high in transmitted power, reliability and automation degree, easy to manufacture, low in cost and power loss and wide in market prospect, and can completely realize stepless speed change required under most working conditions.

Description

A kind of stepless speed changing mechanism

Technical field

The utility model relates to a kind of stepless speed changing mechanism.

Background technique

Traditional Variable Speed Technology adopts driving belt and the variable driven wheel of the working diameter incompatible transferring power that matches, and can realize continuously changing of velocity ratio, thus the optimum Match of the power train of obtaining and engine operating condition.That advantage has is in light weight, volume is little, component are few. operational efficiency height, oil consumption low (more lower slightly) etc. than manual transmission; Shortcoming has: 1. and with high content of technology, domestic research weak foundation; 2. make complicacy, cost is high, and key components and parts is dependence on import fully, and scale of investment is big; The driving belt life-span short relatively, maintenance cost is high; 4. mainly be suitable for middle automobile with small output volumn, be not suitable for high-power transmission, also poor with the inheritance of manual transmission.

The model utility content

The purpose of the utility model provides a kind of stepless speed changing mechanism, remedies deficiency of the prior art.

The purpose of the utility model is to realize through following technological scheme:

A kind of stepless speed changing mechanism comprises input shaft and output shaft, input shaft and gear one engagement; Gear one decomposes mechanism with motion and is fixedly connected, and motion is decomposed mechanism and connected with axle one and axle two respectively, and axle one is fixedly connected with gear two; Gear two and gear three engagements, gear three is fixedly connected with axle three, and said axle two is fixedly connected with gear four; Gear four and gear five engagements, gear five is fixedly connected with axle four, and axle four connects with the motion combination mechanism respectively with said axle three; Gear six, gear six and the engagement of said output shaft have been fixedly connected on the motion combination mechanism.

Be equipped with bearing on said input shaft, output shaft, axle one, axle two, axle three and the axle four, comprising more than one unilateral bearing.

The beneficial effect of the utility model is: adopt gear transmission, and rely on the needs of self output torque to come adjustment speed ratio automatically, it is big to have a transmitted power; Good reliability, automaticity is high, makes simple; Cost is low; Advantages such as power loss is little can realize the needed stepless change of most of operating modes fully, and market prospects are boundless.

Description of drawings

According to accompanying drawing the utility model is done further explain below.

Fig. 1 is the structural representation of the described stepless speed changing mechanism of the utility model embodiment.

Among the figure:

1, input shaft; 2, output shaft; 3, gear one; 4, mechanism is decomposed in motion; 5, axle one; 6, axle two; 7, gear two; 8, gear three; 9, axle three; 10, gear four; 11, gear five; 12, axle four; 13, motion combination mechanism; 14, gear six.

Embodiment

As shown in Figure 1, the described a kind of stepless speed changing mechanism of the utility model embodiment comprises input shaft 1 and output shaft 2; Input shaft 1 decomposes mechanism 4 with motion and is fixedly connected with gear one 3 engagements, gear 1, and motion is decomposed mechanism 4 and connected with axle 1 and axle 26 respectively; Axle 1 is fixedly connected with gear 27, gear 27 and gear 38 engagements, and gear 38 is fixedly connected with axle 39; Said axle 26 is fixedly connected with gear 4 10; Gear 4 10 and gear 5 11 engagements, gear 5 11 is fixedly connected with axle 4 12, and axle 4 12 connects with motion combination mechanism 13 respectively with said axle 39; Gear 6 14, gear 6 14 and 2 engagements of said output shaft have been fixedly connected on the motion combination mechanism 13.Be equipped with bearing on said input shaft 1, output shaft 2, axle 1, axle 26, axle 39 and the axle 4 12, comprising more than one unilateral bearing.

The motion passive movement of said input shaft 1 input decomposes mechanism 4 and decomposes, and lets two motions after decomposing carry out the speed change of inequality again, and then two after the speed change is moved synthetic through motion combination mechanism 13.Detailed process: gear 1 is given in input shaft 1 transmission; Motion is decomposed mechanism 4 motion of gear 1 is decomposed; Drive axle 1 and axle 26 rotations respectively, axle 1 is directly proportional with the rotating speed of gear 1 with the mean value of axle 26 rotating speeds, and physical relationship is relevant with motion decomposition mechanism 4.Axle one 5 driven gears 27 rotate, and gear 27 driven gears 38 rotate, and gear 38 drives axle 39 and rotates; Axle 26 driven gears 4 10 rotate simultaneously, and gear 4 10 driven gears 5 11 rotate, and gear 5 11 drives axle 4 12 and rotates.Axle 39 rotates with axle 4 12 input simultaneously and gives motion combination mechanism 13, and motion combination mechanism 13 is accomplished the synthetic of motion, again the gear 6 14 and output shaft 2 engagements, the output of will moving through being fixedly connected with it.All axles all use bearings, and the counter-rotating for some part in the anti-locking mechanism wherein needs more than one unilateral bearing.The utility model distributes according to the needs meeting adjustable axle 1 of output torque and rotating speed and the rotating speed of axle 26, finally realizes stepless change.

The described a kind of stepless speed changing mechanism working principle of the utility model embodiment: understand for ease and elaboration; As the decomposition of the motion described in the utility model mechanism 4 and motion combination mechanism 13, each gear-stage velocity ratio is respectively with differential mechanism: i1 (velocity ratio of input shaft 1 and gear 1), i2 (velocity ratio of gear 27 and gear 3 8), i3 (velocity ratio of gear 4 10 and gear 5 11), i4 (velocity ratio of gear 6 14 and output shaft 2); The rotating speed of input is n, and moment of torsion is T, and power is P=n * T/9.549.

Input shaft 1 transfers the motion to gear 1, and gear one 3 rotating speeds are n/i1, and moment of torsion is i1 * T, and motion is decomposed mechanism 4 and will be decomposed from the motion of gear 1, reaches axle 1 and axle 26 respectively, and axle 1 is twices of gear 1 with the rotating speed sum of axle 26,

That is: n5+n6=2n/i1 (n5 representes axle one 5 rotating speed, and n6 representes the rotating speed of axle 26, down with)

But their rotating speeds separately all are uncertain, and the difference of establishing its rotating speed is δ,

That is: n5-n6=δ

This moment, δ was a uncertain amount, can draw:

n5=（2n/i1+δ）/2

n6=（2n/i1-δ）/2

Its moment of torsion all is the half the of gear one 3 moments of torsion, that is: T5=T6=i1 * T.(T representes corresponding moment of torsion)

Axle 1 transfers the motion to axle 39 and axle 4 12 through the gear that is fixedly connected separately again with axle 26, and this is simple gear engagement, and its rotating speed and moment of torsion are respectively:

n9=n5/i2=（2n/i1+δ）/2i2

n12=n6/i3=（2n/i1-δ）/2i3

T9=T5×i2=i1×i2×T

T12=T6×i2=i1×i3×T

Through motion combination mechanism 13 that above-mentioned two motions are synthetic again, then the rotating speed of motion combination mechanism 13 is:

n13=（n9+n12）/2=（2n/i1+δ）/4i2+（2n/i1-δ）/4i3

Moment of torsion is synthetic at this moment changes with rotation speed change, does not have the relation of confirming with T9 and T12, and is directly proportional with input power, is inversely proportional to n13.

Motion combination mechanism 13 through the engagement of gear 6 14 with output shaft 2, is accomplished the final output of motion again:

Rotation speed n 2=n13/i4={ (2n/i1+ δ)/4i2+ (2n/i1-δ)/4i3}/i4

Power P 2=P * η (transmission efficiency), then moment of torsion is:

T2=9.549×P2/n2=9.549×P×η/{（2n/i1+δ）/4i2+（2n/i1-δ）/4i3}/i4

Under the known situation of input, the rotating speed of output and moment of torsion are still unknown, change with the difference δ of rotating speed; And the difference δ of rotating speed is an intermediate variable that does not have artificial control, is passive variation, and real acting variable is an actual speed; When actual speed was less than normal relatively, output torque was bigger, thereby made output produce acceleration; Actual speed rises automatically, and output torque descends, up to output torque during with uniform motion the moment of torsion of needs equate.The rotating speed of importing in this process is constant, and output speed changes continuously, has promptly realized stepless change.

The utility model adopts gear transmission, and relies on the needs of self output torque to come adjustment speed ratio automatically, and it is big to have a transmitted power; Good reliability, automaticity is high, makes simple; Cost is low; Advantages such as power loss is little can realize the needed stepless change of most of operating modes fully, and market prospects are boundless.

Claims

1. a stepless speed changing mechanism comprises input shaft (1) and output shaft (2), it is characterized in that: input shaft (1) and gear one (3) engagement; Gear one (3) decomposes mechanism (4) with motion and is fixedly connected, and motion is decomposed mechanism (4) and connected with axle one (5) and axle two (6) respectively, and axle one (5) is fixedly connected with gear two (7); Gear two (7) and gear three (8) engagements; Gear three (8) is fixedly connected with axle three (9), and said axle two (6) is fixedly connected with gear four (10), gear four (10) and gear five (11) engagements; Gear five (11) is fixedly connected with axle four (12); Axle four (12) connects with motion combination mechanism (13) respectively with said axle three (9), the gear six (14) that has been fixedly connected on the motion combination mechanism (13), gear six (14) and said output shaft (2) engagement.

2. stepless speed changing mechanism according to claim 1; It is characterized in that: be equipped with bearing on said input shaft (1), output shaft (2), axle one (5), axle two (6), axle three (9) and the axle four (12), comprising more than one unilateral bearing.