Power transmission sheave

Details Power transmission sheave Power transmission sheave

Category

F - Mech Eng,Light,Heat,Weapons

Subcategory

16

Subsubcategory

H

IPC codes

F16H 55/36 (2006.01) F16H 55/49 (2006.01)

Type

Patent

Patent number

CA 2161717

Description

A sheave structure adapted to prevent the build-up of soil and other foreign materials in the v-grooves of sheaves utilized with ground engaging implements such as rotary tillers is provided. The sheave is constructed of mating halves, which when joined form a sheave with a v-groove that includes circumferentially spaced apart openings in the v-groove apex, below the belt contact area of the flanges. The openings are provided adjacent to, but below the belt contact area so that the belt pushes against any materials that collect in the v-groove. In this way, the belt serves to break apart the materials and push them through the openings. With this structure, accumulations of materials in the sheave are minimized, belt contact with the sheave flanges is improved and power transmission is enhanced.

Cette invention concerne une poulie conçue pour prévenir l'accumulation de terre et autres matières étrangères en fond de gorge et destiné à des outils de travail du sol tels que motoculteurs. La poulie se compose de deux flasques de forme telle que, lorsque réunis, ils définissent une gorge en V dans la partie inférieure de laquelle, soit sous la zone de contact de la courroie de transmission, se trouvent des trous espacés formant un cercle. Ces trous sont ménagés immédiatement sous la zone de contact de la courroie de sorte que la terre et les débris accumulés dans la gorge de la poulie et poussés vers le fond puissent s'évacuer au fur et à mesure. Cette disposition constructive assure le morcellement des mottes et débris par la courroie en fragments pouvant s'échapper par les trous. Ainsi, l'engorgement de la poulie est minimisé, le contact poulie-courroie amélioré et le rendement de transmission de puissance rehaussé.

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