Variable-diameter wheel set assembly and continuously variable transmission

Abstract

The invention discloses a variable-diameter wheel set assembly and a continuously variable transmission. The variable-diameter wheel set assembly comprises sliding blocks, a pressing assembly, a rotating shaft and two conical discs fixedly arranged on the rotating shaft; the two conical discs are oppositely arranged in the axial direction of the rotating shaft in a spaced mode; the face, facing the other conical disc, of one conical disc is a conical face; a plurality of sliding chutes are arranged on the two conical face, and the plurality of sliding chutes are arranged at intervals along the peripheral direction of the conical discs; the guiding direction of the sliding chutes is parallel to the generatrix of the conical face; the multiple sliding blocks correspond to the sliding chutes on the conical discs one to one; the sliding blocks are arranged between the two conical discs, and the two ends of each sliding block are arranged in the corresponding sliding chutes in a sliding mode; and the sliding blocks can support transmission belts wound on the sliding blocks, and the pressing assembly can press the transmission belts wound on the sliding blocks. Thus, in the rotating process of the conical discs, the friction force between the transmission belts and the variable-diameter wheel set assembly can be increased, the phenomenon that the transmission belts slip is avoided, and the power transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automobile gearboxes, in particular to a variable-diameter wheel assembly and a continuously variable transmission. Background technique [0002] The gearbox of an automobile is the power transmission part of the vehicle, and its main function is to increase the output torque while reducing the speed, so that the vehicle has good power. Generally, gearboxes can be divided into three categories: stepped transmissions, continuously variable transmissions (CVT transmissions) and integrated transmissions. Among them, since the CVT transmission can realize the continuous change of the transmission ratio, it can make the transmission system and the engine work conditions to achieve the best matching state, thereby effectively improving the fuel economy and power of the vehicle, and improving the ride comfort of the passengers. Therefore, the CVT gearbox has gradually replaced the stepped transmission and has b...

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Problems solved by technology

[0003] The traditional CVT transmission uses the steel belt clamped by the smooth surface of two conical discs set opposite to each other, and uses the friction between the steel belt and the conical surface for power transmission. However, this method is easy to cause the CVT transmission to The load is small, and it is easy to slip, which will affect the power transmission effect

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