Single disc half torus type continuously variable transmission

Abstract

The invention discloses a single-disc half-toroidal continuously variable transmission and aims to provide a continuously variable transmission which is higher in efficiency, easy to process and manufacture, convenient for speed regulation, better in operating conditions and stable and reliable. The single-disc half-toroidal continuously variable transmission is technically characterized in that an input shaft gear meshes with a loading cam gear, the loading cam gear is mounted between two symmetrically arranged input discs, power is transmitted to a meshing bevel gear through four drive rollers and is directly outputted by gear meshing drive, continuously variable power transmission is achieved by single traction drive on a single drive line, and the swing angle of the drive rollers is regulated through a worm gear and a worm. The single-disc half-toroidal continuously variable transmission is applicable to high power automobiles, engineering machines and the like which require high power continuously variable transmissions.

Description

technical field [0001] The invention relates to a speed change mechanism in a drive train, specifically a continuously variable transmission. Background technique [0002] Traction-type semi-torusal continuously variable transmissions have been partly loaded into the market, such as Chinese patent publication numbers CN101479503B, CN100460715C and CN1116536C all disclosing semi-toroidal continuously variable transmissions. Its main components are: input shaft, loading cam, input disc, transmission roller, output disc, and output shaft. The principle is to transfer motion and power with the traction performance of traction oil in the contact area of ​​input disc, transmission roller and output disc. The design improves the friction conditions between the contact surfaces and increases the bearing capacity, which is suitable for medium and large displacement cars. Its shortcomings are: on the one hand, it is known that the power transmission loss at the traction point is the ...

AI Technical Summary

Problems solved by technology

Its shortcomings are: on the one hand, it is known that the power transmission loss at the traction point is the main efficiency loss of the entire transmission. Since the power is transmitted along the two traction routes of the input disc driving the drive roller and then driving the output disc, this The transmission efficiency of this kind of transmission needs to be improved; on the other hand, due to the high manufacturing precision of the transmission components and the difficulty in the manufacture of hydraulic control components, the manufacturing cost is high, so that the half-toroidal continuously variable transmission has not yet been able to be used on a large scale.

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