Internally engaged double planetary gear stepless transmission
A continuously variable transmission, internal meshing technology, applied in the direction of gear transmission, belt/chain/gear, mechanical equipment, etc.
Inactive Publication Date: 2010-08-18
DALIAN JIAOTONG UNIVERSITY
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Problems solved by technology
The problem is that in a single-stage planetary gear transmission, the output is the speed of the planetary gear, and a special eccentric output mechanism is required
Method used
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[0018] Such as figure 1 A continuously variable transmission with internal meshing double planetary gears is shown, in which the planetary gear train belongs to the NN type internal meshing double planetary gear train, the input speed is the speed of the tie rod, the length of the tie rod is the eccentricity of the eccentric shaft 4mm, the input shaft Number of revolutions n 入 =1500r / min, the speed of the stepless speed regulating device 15 is 0-3000r / min, through the fixed ratio transmission gear, the speed of the sun gear I 10 can be reduced to 0-1500r / min; the output speed is the sun gear output shaft 4 speed. The tooth shape of the double planetary gear 9 and the sun gear adopts an involute tooth shape, the number of teeth of the sun gear is 2 teeth more than that of the planetary gear, and the difference of the number of teeth of the two sets of planetary gear trains is 10 teeth. The number of teeth of the double planetary gear is 30, 20 respectively, and the modulus m...
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The invention discloses an internally engaged double planetary gear stepless transmission, which comprises a box body and an output flange, wherein a double planetary gear train and a fixed axis gear train are arranged in the box body. The internally engaged double planetary gear stepless transmission is characterized in that the fixed axis gear train consists of a speed regulation gear, a speed regulation gear shaft and a stepless speed regulation device; the double planetary gear train comprises an input crankshaft, double planetary gears, a sun gear output shaft and a sun gear I, wherein the input crankshaft is supported in the box body and the sun gear output shaft by means of bearings, the double planetary gears are supported on the input crankshaft, gearwheels on the double planetary gears are internally engaged with the sun gear output shaft, and pinions on the double planetary gears are internally engaged with the sun gear I; the sun gear output shaft is supported in the box body and the output flange by means of the bearing; and the sun gear I is supported in the box body by means of the bearing, provided with outer circular teeth and engaged with the speed regulation gear. The speed regulation device adjusts the rotational speed of the sun gear I through the speed regulation gear so as to adjust the rotational speed of the sun gear output shaft in a stepless mode. The double planetary gear train solves the problem that a single planetary gear train uses an eccentric output mechanism.
Description
technical field [0001] The invention relates to a gear transmission device for transmitting rotary motion or reversing rotary motion with a variable speed ratio, which belongs to an internally meshing double planetary gear continuously variable transmission. Background technique [0002] The continuously variable transmission can freely change the transmission ratio, so as to realize the whole process of continuously variable speed. The speed of the car is constantly changing, which requires the car's transmission system to have as many transmission ratios as possible. It is necessary to use a continuously variable transmission that can realize continuous changes in the transmission ratio, so as to obtain the best match between the transmission system and the engine's working conditions. The vehicle speed changes more smoothly, which improves the fuel economy and power performance of the vehicle. [0003] At present, wind power generation has received the attention of the c...
Claims
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Inventor 邵万珍李永华吴岳
Owner DALIAN JIAOTONG UNIVERSITY