The invention discloses a four-gear automatic transmission applied to a pure electric automobile. The four-gear automatic transmission comprises an input shaft freely sleeving a half shaft of a differential mechanism, wherein a motor is fixedly arranged on the input shaft; an intermediate shaft I and an intermediate shaft II are arranged on the two sides of the input shaft; the intermediate shaftI and the intermediate shaft II are arranged in a symmetrical structure, parallel to the input shaft, and used for receiving power transmitted by the input shaft; the intermediate shaft I is in transmission connection with the differential mechanism through an odd gear set; the intermediate shaft II is in transmission connection with the differential mechanism through an even gear set; the four-gear automatic transmission further comprises a short idler shaft which is arranged parallel to the input shaft; and a parking ratchet wheel is fixedly arranged on the short idler shaft and in transmission connection with the differential mechanism through a transmission assembly. According to the four-gear automatic transmission applied to the pure electric automobile, odd gears and even gears canbe alternately engaged and disengaged under the matching of synchronizers, so that the phenomenon of power interruption in the gear shifting process is avoided; and at the same time, an output shaft of the differential mechanism and an input shaft of the differential mechanism are coaxially arranged, so that the longitudinal dimension of the transmission is reduced, and the overall rigidity is ensured in combination with the support of a bearing arranged in the interior of a shell of the transmission.
本发明揭示了一种应用于纯电动汽车的四挡自动变速器,包括空套在差速器半轴上的输入轴,输入轴上固设有一电机;输入轴的两侧设有呈对称结构设置且与其相平行用以接收其传输的动力的中间轴I和中间轴II,中间轴I通过奇数齿轮组与差速器传动连接,中间轴II通过偶数齿轮组与差速器传动连接;还包括与输入轴平行设置的短惰轮轴,短惰轮轴上固设有一驻车棘轮,驻车棘轮通过传动组件与差速器传动连接。本发明主要体现在:奇数挡位和偶数挡位可以在同步器的配合下交替结合和脱开,以避免在换挡过程中的动力中断现象。同时,差速器的输出轴与输入轴共轴设置,减小变速器的纵向尺寸,并结合设置在变速器壳体内部的轴承的支持,确保整体的刚性。
Four-gear automatic transmission applied to pure electric automobile
应用于纯电动汽车的四挡自动变速器
2020-07-03
Patent
Elektronische Ressource
Chinesisch
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