Two-stage automatic gear shift transmission device

Abstract

The invention discloses a two-stage automatic gear shift transmission device. A driving wheel I (3) of a first gear transmission device is engaged with a driven wheel I (7) of the first gear transmission device, and a driving wheel II (10) of a second gear transmission device is engaged with a driven wheel II (12) of the second gear transmission device. The driving wheel I (3) and the driving wheel II (10) are connected with a driving shaft (4) in a sliding way. The driving wheel I (3) and the driving wheel II (10) rotate in circumferential direction along the driving shaft (4). The driven wheel I (7) and the driven wheel II (12) are fixed on a driven shaft (6) and rotate synchronously with the driven shaft (6). The driven shaft (6) is connected with a differential (13) in a gearing way. A gear shift synchronizer is arranged between the driving wheel I (3) and the driving wheel II (10). A gear shift control device is connected to the gear shift synchronizer. The invention can optimally match with electric power output characteristics, reduce the intermediate loss and improve the driving comfort.

Description

technical field [0001] The invention relates to a two-stage automatic variable speed transmission device. Background technique [0002] With the development of new energy technology, motors are used more and more widely as the driving power of vehicles. Compared with the traditional internal combustion engine, the electric motor has characteristics such as large low-speed torque, smooth output torque, and small high-speed power change, which are very suitable for matching passenger vehicles. But it is precisely this difference in characteristics that configures the vehicle transmission system powered by an electric motor to become a bottleneck. Current motor-powered vehicles usually use two kinds of transmission devices: direct drive by motor and transmission by traditional internal combustion engine gearbox. Due to the output characteristics of the motor, it is technically feasible to use the direct drive of the motor, but because there is no optimal matching transmission ...

AI Technical Summary

Problems solved by technology

Current motor-powered vehicles usually use two kinds of transmission devices: direct drive by motor and transmission by traditional internal combustion engine gearbox. Due to the output characteristics of the motor, it is technically feasible to use the direct drive of the motor, but because there is no optimal matching transmission ratio, When matching the motor, the demand for maximum power must be met, resulting in an increase in the cost of the motor, and at the same time a reduction in the working efficiency of the motor, which weakens the advantages of new energy

Although the transmission method of the traditional gearbox solves the problem of power matching, the addition of clutches and dense gear sets in the mechanism increases the weight of the system, and the frequent shifting operation also greatly increases the friction loss during shifting. and impose a burden on the driver

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