Double-overrunning self-adaptive automatic speed changing system capable of bearing ultra-large load

Abstract

The invention discloses a double-overrunning self-adaptive automatic speed changing system capable of bearing an ultra-large load. The double-overrunning self-adaptive automatic speed changing systemcomprises a shaft system, a power input mechanism, a high-speed gear transmission mechanism and a low-speed gear transmission mechanism, wherein the shaft system comprises a main shaft, a main transmission sleeve rotationally sleeving the main shaft, and a first transmission shaft and a second transmission shaft which are coaxially arranged at two ends of the main shaft respectively; one end of the main transmission sleeve transmits power to a spindle and the second transmission shaft through a differential mechanism; and the end, close to the first transmission shaft, of the spindle drives the first transmission shaft to rotate synchronously through a middle transmission sleeve. With such a technical scheme, a cam can be driven through driving resistance, the purposes of automatic gear shifting and self-adaptive matching of vehicle speed output torque according to the driving resistance are achieved, a front-wheel drive transmission mode can be achieved, and high transmission efficiency is obtained.

Description

technical field [0001] The invention relates to the technical field of transmissions, in particular to a double-override self-adaptive automatic transmission system capable of bearing super large loads. Background technique [0002] Due to the limitations of its transmission structure, the existing electric vehicles are completely controlled by the driver based on experience when the driving resistance cannot be accurately known during driving. The actual driving conditions do not match, causing the motor to stall. Especially when the vehicle 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 and increase maintenance and replacement costs. It directly affects the cruising range of the battery. For models with high economic requirements such as electric logistics vehicles, the traditional variable speed tran...

AI Technical Summary

Problems solved by technology

However, the existing cam adaptive automatic transmission devices are only suitable for rear-mounted rear-drive or front-rear-drive transmission modes, and the transmission efficiency is not ideal all the time.

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