Planetary gear transmission based on double brakes
A planetary gear, double brake technology, applied in the direction of gear transmission, belt/chain/gear, transmission, etc., can solve the problems of easy bearing damage and shortened service life, and achieve the effect of convenient control and simple structure
Active Publication Date: 2015-06-17
FUJIAN FUGONG EV TECH
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Problems solved by technology
At present, clutches and planetary gear combinations are often used to obtain multiple transmission ratios. Existing clutches generally use jaw clutches or friction clutches to complete the switching of speed changes, but only jaw clutches cannot be used to shift gears without power interruption. ; while the friction clutch will generate additional axial force (pressing force) directly transmitted to the bearing, so that the bearing is easily damaged and the service life is reduced
Method used
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Embodiment Construction
[0014] see figure 1 As shown, the present invention includes two sets of planetary gear sets 4,9 set up in parallel, sun gears 3,8, large ring gears 5,10 and a planet carrier 13, the first planetary gear set 4 and the second planetary gear The groups 9 each include more than three planetary gears, and the number of teeth of the gears of the first planetary gear set 4 and the gears of the second planetary gear set 9 is z 4 ,z 9 Equal, the number of teeth z of the first sun gear 3 and the second sun gear 8 3 ,z 8 Equal, the number of teeth z of the first large ring gear and the second large ring gear 5 ,z 10 equal. The center of the first sun gear 3 is connected to the power input shaft 1, the first planetary gear set 4 is connected to the first sun gear 3, the first planetary gear set 4 is connected to the first large ring gear 5, and the first large tooth The ring 5 is provided with a first brake 6, which is controlled by the first brake 6 to release or brake. The center...
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The invention discloses a planetary gear transmission based on double brakes. The planetary gear transmission based on double brakes comprises two planetary gear sets which are arranged in parallel, sun wheels, big gear rings and a planet carrier, wherein a first sun wheel centre is connected with a power input shaft; a first planetary gear set is connected with the first sun wheel; the first planetary gear set is connected with a first big gear ring; the first big gear ring is provided with a first brake; a second sun wheel centre is connected with a power output shaft; a second planetary gear set is connected with a second sun wheel; the second planetary gear set is connected with a second big gear ring; the second big gear ring is provided with a second brake; one rotating shaft of the planet carrier is rotatably arranged in the centre holes of the first planetary gear set and the second planetary gear set in a passing manner; the other rotating shaft of the planet carrier is connected with the power output shaft; and an overrun clutch is arranged between the other rotating shaft of the planet carrier and the power output shaft. The structure of the planetary gear transmission based on double brakes is simple; and with the adoption of the double brakes, the planetary gear transmission is conveniently controlled, and an axial force is not generated during the process of the power driving.
Description
technical field [0001] The invention relates to a planetary gear transmission, in particular to a planetary gear transmission based on double brakes in an oil-electric hybrid vehicle. Background technique [0002] In the existing oil and electric hybrid vehicle technology, in order to avoid the frequent power overload of the drive motor, a transmission needs to be set between the motor power input shaft and the power output shaft to ensure that under normal driving conditions, the motor power output shaft The transmission ratio with the main transmission shaft is 1:1; when the power load is large, the transmission ratio between the power output shaft of the motor and the main transmission shaft is (3-4):1. [0003] In order to achieve the above-mentioned speed change requirements, the gearbox is usually used to adjust the output speed of the power output shaft and reduce the input power of the drive motor. At present, clutches and planetary gear combinations are often used ...
Claims
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IPC IPC(8): F16H3/70F16H57/023F16H57/10
Inventor 孙秋林徐世跃
Owner FUJIAN FUGONG EV TECH