A single and double-stage planetary gear combined seven-speed automatic transmission
A technology for automatic transmissions and planetary gears, applied in gear transmissions, vehicle gearboxes, belts/chains/gears, etc., can solve the problems of insufficient compact structure of automatic transmissions, many actuators changing, and many actuators, etc., so that it is not easy to move Effects of less interference, fewer actuator changes, and fewer actuators
Active Publication Date: 2018-04-17
平邑经济开发区投资发展有限公司
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Problems solved by technology
At present, the existing dual-clutch automatic transmission generally adopts a parallel-shaft gear structure. The structure of the automatic transmission with this structure is not compact enough, and there are many actuators, and the actuators change during gear shifting, which is easy to cause motion interference.
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[0011] figure 1 As shown, it involves a single and double-stage planetary gear combined seven-speed automatic transmission, including: a front row ring gear 8, a front row sun gear, a front row planet carrier, a front row first planetary gear 11 and a front row second planetary gear The front row double-stage planetary gear mechanism composed of gear 9; the middle row double-stage mechanism composed of the middle row ring gear 15, the middle row sun gear, the middle row planet carrier, the middle row first planetary gear 13 and the middle row second planetary gear 14 Planetary gear mechanism; rear single-stage planetary gear mechanism composed of rear row ring gear 19, rear row sun gear 21, rear row planet carrier 18 and rear row planetary gear 20; wherein, the front row sun gear and middle row sun gear The wheel is made into a shared front middle row sun gear 12, and the front row planet carrier and the middle row planet carrier are made into a shared front middle row planet ...
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The invention discloses a single-stage planetary gear and two-stage planetary gear combined seven-gear automatic transmission. The single-stage planetary gear and two-stage planetary gear combined seven-gear automatic transmission comprises a front-row two-stage planetary gear mechanism, a middle-row two-stage planetary gear mechanism and a rear-row single-stage planetary gear mechanism. The front-row two-stage planetary gear mechanism is composed of a front-row gear ring, a front-row sun gear, a front-row planetary rack, a first front-row planetary gear and a second front-row planetary gear. The middle-row two-stage planetary gear mechanism is composed of a middle-row gear ring, a middle-row sun gear, a middle-row planetary rack, a first middle-row planetary gear and a second middle-row planetary gear. The rear-row two-stage planetary gear mechanism is composed of a rear-row gear ring, a rear-row sun gear, a rear-row planetary rack and a rear-row planetary gear. The front-row sun gear and the middle-row sun gear are made into a shared front and middle-row sun gear. The front-row planetary rack and the middle-row planetary rack are made into a shared front and middle-row planetary rack. The automatic transmission has the advantages that the structure is simple and compact, a few types of machined parts exist, cost is low, the number of executive components is small, the executive components change slightly during gear shifting, and motion interference is not likely to occur.
Description
technical field [0001] The invention relates to a single and double-stage planetary gear combined type seven-speed automatic transmission. Background technique [0002] An automatic transmission mainly includes a planetary gear unit, clutches and brakes. The automatic transmission uses automatic transmission oil for energy conversion and power transmission, and uses oil pumps, oil circuits, clutches, planetary gear sets, multiple solenoid valves and other components to realize automatic transmission, bringing easy and simple driving experience to people's car driving . [0003] And existing double-clutch automatic transmission has two power input clutches, and wherein a clutch is responsible for the power input of odd-numbered gears, and another clutch is responsible for the power input of even-numbered gears, and it has the advantages of smooth shifting, good comfort, and fuel economy. At present, the existing dual-clutch automatic transmission generally adopts a parallel...
Claims
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IPC IPC(8): F16H3/46
CPCF16H3/62F16H2200/201F16H2200/2056
Inventor 龚文资陈帮陆
Owner 平邑经济开发区投资发展有限公司