Central driving self-adaptive speed change assembly of tricycle

Abstract

The invention discloses a central driving self-adaptive speed change assembly of a tricycle. The speed change assembly comprises a power input mechanism, a main shaft, a high-gear transmission mechanism, a low-gear transmission mechanism, a front-back gear shifting switching mechanism, a power output mechanism and a reverse gear transmission mechanism. By the adoption of the technical scheme, regardless of a forward gear or a reverse gear, the tricycle can be matched with the actual travel condition and the motor condition in a self-adaptive mode according to resistance, so that a motor is always located on an efficient platform while the tricycle has strong climbing and heavy load capacities, the efficiency of the motor under the climbing and heavy load conditions is greatly improved, energy consumption of the motor is lowered, and particularly under the condition of not cutting off driving force, the tricycle can automatically conduct high and low gear shifting for speed change according to the change of travel resistance in a self-adaptive mode no matter in the forward gear or the reverse gear; and moreover, the whole tricycle is mounted in a central driving mode, power is directly transmitted to a differential mechanism, the chassis space of the tricycle is reasonably utilized, and the assembling difficulty is lowered.

Description

technical field [0001] The invention relates to the technical field of tricycle electric drive systems, in particular to a tricycle central drive adaptive transmission assembly. Background technique [0002] With the increasingly stringent environmental protection regulations, it has become a general trend to replace traditional internal combustion engine-driven tricycles with tricycles using electric drive systems. [0003] Due to the limitations of its transmission structure in the existing tricycle electric drive system, the driver can control and shift gears based on experience when the driver cannot accurately know the driving resistance during driving. Therefore, it is often unavoidable that the working state of the motor does not match the actual driving conditions of the tricycle, causing the motor to stall. Especially when the tricycle is under low-speed and heavy-load conditions such as starting, climbing, and headwind, the motor often needs to work at low efficie...

AI Technical Summary

Problems solved by technology

[0003] Due to the limitations of the transmission structure of the existing tricycle electric drive system, during the driving process, the driver can control and shift gears based on experience without accurately knowing the driving resistance.

Therefore, it is often unavoidable that the working state of the motor does not match the actual driving conditions of the tricycle, causing the motor to stall.

Especially when the tricycle is under low-speed and heavy-load conditions such as starting, climbing, and headwind, the motor often needs to work at low efficiency, low speed, and high torque, which is likely to cause accidental damage to the motor, increase maintenance and replacement costs, and also directly Affect battery life

For models with high economic requirements such as electric logistics vehicles, the traditional variable speed transmission structure obviously cannot better meet their use requirements

Moreover, the existing tricycle electric drive system cannot perform adaptive shifting according to driving resistance in the reverse transmission path.

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