Four-forward two-reverse planetary transmission
A technology of planetary transmission and planetary row, which is applied in the direction of gear transmission, belt/chain/gear, mechanical equipment, etc., which can solve the problems that drivers are tired of changing gears frequently and manual transmission gears cannot be too many, so as to achieve easy Structural design, light weight, and simple transmission diagram
Inactive Publication Date: 2012-08-29
CHINA NORTH VEHICLE RES INST
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Problems solved by technology
As we all know, for a manual transmission, too many gears will cause the driver to be tired of changing gears frequently. Therefore, the gears of a manual transmission cannot be too many, so the planetary transmission with four forward gears and five forward gears is currently being used. It has been developed and used in vehicles, but there is no planetary transmission and its design for four fronts and two reverses in China.
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[0012] The planetary transmission for automatic transmission provided by the present invention will be further described below in conjunction with the accompanying drawings and examples.
[0013] Such as Figure 1 to Figure 2 As shown, this planetary transmission can realize four forward gears and two reverse gears, and it consists of three planetary rows. The first simple planetary row consists of ring gear R1, planetary carrier PC1, sun gear S1 and planetary gear P1. Planetary gear P1 meshes with ring gear R1 and sun gear S1 at the same time, and planetary carrier PC1 supports planetary gear P1. The second simple planetary row consists of ring gear R2, planetary carrier PC2, sun gear S2 and planetary gear P2. Planetary gear P2 meshes with ring gear R2 and sun gear S2 at the same time. Planetary carrier PC2 supports planetary gear P2. The third planet There are three basic components (ring gear R3, planet carrier PC3, sun gear S3) and a planetary gear P3, the planetary gear ...
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The invention belongs to a planetary transmission for an automatic gearbox, which can realize four forward gears and two reverse gears by using relatively fewer planet gear sets. The planetary transmission consists of three planet gear sets, wherein basic components, such as gear rings, planet carriers and sun wheels, of each set are directly or indirectly connected with input shafts and output shafts (and a box body) by using five control parts comprising two clutches and three brakes. The planetary transmission simplifies a transmission diagram and reduces the size and weight of the automatic gearbox; the gears are shifted only by replacing one control part, so that a gear shifting controller can be easily designed; and planet gears have relatively lower relative-rotating speeds and structures easy to design.
Description
technical field [0001] The invention relates to the field of mechanical design, in particular to a four-front, two-reverse planetary transmission. Background technique [0002] The transmission mechanism of the automatic transmission changes the rotational speed and torque output by the hydraulic torque converter, and outputs the changed rotational speed and torque through the output shaft. As we all know, for a manual transmission, too many gears will cause the driver to be tired of changing gears frequently. Therefore, the gears of a manual transmission cannot be too many, so the planetary transmission with four forward gears and five forward gears is currently being used. It has been developed and used in vehicles, but there is no planetary transmission and its design for four fronts and two reverses in China. [0003] When the transmission ratio series is determined, the selection of a good transmission scheme is a very important task, because the efficiency, size and r...
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IPC IPC(8): F16H3/44F16H3/76
Inventor 李洪武吕庆军潜波张鹤程燕赵欣源石彦辉尹华兵许晋
Owner CHINA NORTH VEHICLE RES INST