Double Planetary Confluence Multi-speed Multi-clutch Transmission

Abstract

The invention relates to a double-planet-row converging type multi-gear multi-clutch transmission which can meet multi-gear needs. The double-planet-row converging type multi-gear multi-clutch transmission comprises a main input shaft, a main output shaft, a multi-plate clutch and a double-planet-row converging mechanism. The multi-plate clutch comprises more than two clutch input shafts, more than three clutch output shafts and corresponding clutch mechanisms. A variable gear set is arranged between each clutch input shaft and the main input shaft. The clutch output shafts comprise a front sun wheel clutch output shaft, a front planet carrier clutch output shaft and a rear gear ring clutch output shaft, the front sun wheel clutch output shaft is in coaxial transmission connection with the front sun wheel of the double-planet-row converging mechanism, the front planet carrier clutch output shaft is in coaxial transmission connection with the front planet carrier of the double-planet-row converging mechanism, the rear gear ring clutch output shaft is in coaxial transmission connection with the rear gear ring of the double-planet-row converging mechanism, a front gear ring is in coaxial transmission connection with a rear planet carrier, and a rear sun wheel is in coaxial transmission connection with the main output shaft. The front sun wheel clutch output shaft, the front planet carrier clutch output shaft and the rear gear ring clutch output shaft are further connected with corresponding brakes.

Description

technical field [0001] The invention relates to a multi-speed multi-clutch transmission of a dual-planetary confluence type. Background technique [0002] At present, the technology of the transmission is developing rapidly and can meet the gear requirements of general vehicles. However, for some vehicles with complex operating conditions and more gear requirements, such as tractors, the existing tractors still use multiple pairs of sliding gears and meshing gears to shift gears. There are manual mechanical shifting methods such as sleeves and synchronizers. Therefore, the number of speed ratios that can be obtained by the transmission is limited by the number of gear pairs. To obtain more speed ratios, not only the number of gear pairs must be increased correspondingly, but the corresponding Mesh sleeves, shift forks and other structures, and need to reserve moving space for the sliding gears in the gear set, resulting in a very complicated structure of the transmission and...

AI Technical Summary

Problems solved by technology

However, although the above-mentioned speed change system adopts a planetary mechanism to double the speed, the number of speed changes in the DCT transmission system is still limited by the number of gear pairs, so the effect of increasing the overall gear range is still not obvious, and the number of gear gears is relatively small.

Moreover, due to the need to set a clutch for the ring gear or the sun gear, the system structure is complicated, the overall space is large, and the maintenance operation is inconvenient

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