Speed ratio adjusting mechanism of stepless transmission

Abstract

The invention relates to a speed ratio adjusting mechanism of a stepless transmission. The speed ratio adjusting mechanism comprises a box body, an input part (an input shaft, a pin shaft, a screw nail, a rectangular shaft, a round cam and a thrust bearing), an output part (a pin shaft R, a roller, a swinging rod and a small shaft), a speed control part (a speed regulation hand shank, a sleeve, a rolling bearing, a close locked nut, and a left end cap of the box body), wherein one end of the input shaft is connected with a rectangular shaft the cross section of which is a rectangular, and the rectangular shaft is divided into an A section and a B section; the center line of the A section is coincided with a shaft line of the input shaft, the center line of the B section and the center line of the A section form a certain included angle, and the B section is inserted an oblique rectangular hole which is provided with a center line on a center position of the round cam; the other end of the round cam is connected with a swinging rod, the size of swing amplitude of the swinging rod determines the size of speed ratio, and an eccentric distance determines the size of the swing amplitude of the swinging rod when the round cam is rotated; and a relative position of the input shaft and the round cam determines the size of the eccentric distance of the round cam, and the speed ratio is regulated through the relative position of the input shaft and the round cam is regulated.

Description

Invention field [0001] The invention relates to a transmission mechanism, in particular to a continuously variable transmission speed ratio adjustment mechanism. Background technique [0002] Pulsating continuously variable transmission has wide applications in textile, chemical, light industry, plastics, paper, food, pharmaceutical and other industrial fields. At the same time, it has always had new inventions in its working reliability, speed range, speed control mode, simple structure, etc. create. [0003] The Chinese invention patent application with application number 200910210482.2 discloses a swash plate guide rod rotating continuously variable transmission. The continuously variable transmission consists of an active mechanism, an output mechanism, and a box. The active mechanism is adjustable and rotatable The swash plate is composed of at least three parallel and equiangular guide rods. One end of the guide rod is equipped with a unidirectional rotating helical gear, an...

AI Technical Summary

Problems solved by technology

However, its structure is complex and huge, its manufacturing cost is high, its maintenance is difficult, and its speed ratio adjustment is also difficult, especially it cannot provide a very low speed ratio (such as zero speed ratio).

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