CVT

Abstract

The invention discloses a stepless speed change device which comprises a vehicle frame, wherein the vehicle frame comprises a front frame and a rear frame which are connected fixedly by a connecting frame and are arranged in parallel; a front friction disc is arranged at the front end of the front frame; a rear friction disc is arranged at the rear end of the rear frame; a transmission shaft support is arranged on the front frame; the transmission shaft sequentially penetrates through the connecting frame of the vehicle frame and the transmission shaft support. According to the stepless speed change device disclosed by the invention, by utilizing friction wheels, the power conveys to the rear friction disc from the front friction disc through the transmission shaft, and the shaft sleeve can control different positions of a front friction wheel and a rear friction wheel which are located on the front friction disc and the rear friction disc to realize speed change; gear cables penetrate through gear cable holes, the gear cables are pulled by utilizing fingers, and sliding of the shaft sleeve on the vehicle frame is realized by cooperating with a reset spring; and the friction wheels are shifted in the radial directions of the friction discs, so that the speed change is realized. In addition, the device is simple in structure, convenient to operate, and high in efficiency and economic.

Description

technical field [0001] The invention relates to a stepless speed change device. Background technique [0002] At present, vehicle speed change is an unavoidable problem in daily life. The existing gear speed change device mainly uses a planetary gear speed change device, and realizes speed change by arranging a plurality of gears of different sizes in the speed change device. [0003] For example: Chinese utility model patent, compound ring gear planetary gear transmission, application number CN201620363519.0; Chinese utility model patent, bicycle mid-mounted dual-motor planetary gear transmission device with small tooth difference, application number CN201510155890.8. [0004] This kind of gear transmission device has a complex structure and high cost, which not only causes great pressure on the operation of the device, but also makes it difficult to work once a component of the device is damaged and has a short service life. SUMMARY OF THE INVENTION [0005] According t...

AI Technical Summary

Problems solved by technology

[0005] According to the above-mentioned technical problems, a continuously variable transmission device is provided, which is used to solve the problem that the existing gear transmission device has a complex structure and high cost, which not only causes a lot of pressure on the operation of the device, but also causes serious damage once a part of the device is damaged. Difficult to work, short lifespan

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