Self-rotation free multi-rolling-cone type stepless speed change unit

Abstract

The invention discloses a self-rotation free multi-rolling-cone type stepless speed change unit and aims at providing a stepless speed change unit which is capable of avoiding self-rotation efficiency losses within the speed change ratio range, easy to manufacture, long in service life and large in torque. The self-rotation free multi-rolling-cone type stepless speed change unit is technically characterized in that the speed change unit is composed of a core shaft, an input shaft sleeve, an output shaft sleeve, an input wheel, an output wheel, force transmitting rolling cones, rolling cone installing shafts and a speed adjusting shaft sleeve. The power is input through the input shaft sleeve, sequentially passes the input wheel, the force transmitting rolling cones and the output wheel and is finally output through the output shaft sleeve. The core shaft is provided with the speed adjusting shaft sleeve, the speed adjusting shaft sleeve is hinged to one end of the rolling cone installing shafts, during speed adjusting, the posture of a force transmitting wheel is changed by moving the speed adjusting shaft sleeve, and other traction elements follow up and are kept in contact. A standard conical surface is adopted as the work face of the force transmitting rolling cones, and the input wheel and the output wheel are outwards-convex hook faces. The self-rotation free multi-rolling-cone type stepless speed change unit can be used for replacing a speed change unit in a traction type stepless speed changer, and the speed changer is in self-rotation free efficient transmission and has good comprehensive performance.

Description

technical field [0001] The invention relates to a transmission unit in a transmission system, specifically a traction type continuously variable transmission unit. Background technique [0002] At present, environmental pollution and energy consumption are two important issues facing the world today, and the continuously variable transmission is an ideal transmission solution, which can provide a series of continuous transmission ratios to make the internal combustion engine always work at a high efficiency point, which also improves Improve the transmission efficiency of the whole machine and reduce the emission of the internal combustion engine. Various existing mechanical continuously variable transmissions can be mainly divided into: friction continuously variable transmission and traction continuously variable transmission. For large-displacement internal combustion engine vehicles, traction-type continuously variable transmissions have higher transmission efficiency t...

AI Technical Summary

Problems solved by technology

It is not difficult to find that it is difficult for a continuously variable transmission to take into account the relative geometric position requirements of no spin while ensuring continuous speed regulation

Therefore, the existing conventional traction continuously variable transmission products all have spin loss

[0007] In order to eliminate spin loss, a spinless speed change unit was proposed (patent application publication number CN104776180A). During the process, both the active cone and the driven cone will move or swing; although this technical solution can eliminate the spin, it also has two shortcomings: one is that the busbars of the active cone and the driven cone adopt complex logarithmic The curve is difficult to manufacture; the second is that the speed control is more troublesome

[0010] Generally speaking, the shortcomings of the existing technology are: the existing conventional traction continuously variable transmission products all have spin loss; in some recently proposed technical solutions for eliminating spin, they do not have good comprehensive performance

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