A floating load-sharing structure of planet wheel rollers in a toroidal planetary worm drive

Abstract

The invention discloses a planet gear roller floating load balancing structure of a toroidal planet worm drive. The structure mainly comprises planet gears, a planet gear roller, needle bearings, a sleeve, balls, baffles, a sealing ring and the like. The floating load balancing structure is configured among the planet gears and the planet gear roller. The planet gear roller and the inner rings of the needle bearings are in interference connection. The sleeve and the outer rings of the needle bearings are in interference connection. Assembly clearances exist between the sleeve and the planet gears, lubricating oil is injected into the clearances to form an oil film for lubrication, oil film floating exists among the roller and the planet gears, and therefore the planet gear roller can swing slightly, meshing of the planet gear roller and a toroidal inner gear ring can be adjusted, the meshing flexibility of the planet gears and the inner gear ring is increased, uneven load distribution caused by machining errors and assembly errors of drive parts can be effectively avoided, the drive performance of a mechanism is improved, and the service life of the mechanism is prolonged. The planet gear roller floating load balancing structure has the beneficial effects that the drive performance and reliability of the drive are improved, and the situation that due to uneven loads, noise is increased, efficiency is lowered, and even the drive fails can be effectively avoided.

Description

technical field [0001] The invention relates to a planet wheel roller floating load sharing structure of a toroidal planetary worm transmission. Background technique [0002] The toroidal planetary worm transmission is a pure rolling meshing planetary worm transmission, which changes the meshing characteristics of the traditional gear transmission, and integrates the compact structure, small size, low weight, high bearing capacity (power split), and transmission of the planetary gear transmission. The advantages of large power and transmission ratio are closely combined with the advantages of low noise, small vibration and large number of meshing teeth of worm transmission, which is a high-efficiency and compact transmission. [0003] The toroidal planetary worm transmission mechanism was first proposed by Coulter Company of the United States in the 1960s. In the 1980s, the first prototype was trial-produced by Coulter Company and Professor H. PeeKen of Aachen University in ...

AI Technical Summary

Problems solved by technology

In the meshing transmission, at the same time, multiple rollers of multiple planetary gears mesh with the ring gear and the central worm at the same time, but due to various manufacturing and installation errors, it is difficult to realize the load of multiple meshing conjugate points balanced

Unbalanced load will increase the vibration and noise of the mechanism, increase the wear between the meshing surfaces, shorten the service life of the mechanism, and seriously cause jamming, burning and broken teeth.

[0004] Uniform load distribution is the key factor to realize these advantages, so it is necessary to design the load-sharing structure of this toroidal planetary worm drive, so as to further improve or optimize the dynamic performance and working stability of mechanical transmission, but at present, domestic and foreign The research on load-bearing structure design is limited, which restricts the wide application of this new type of mechanism.

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