High efficiency brake for agricultural drive systems

F - Mech Eng,Light,Heat,Weapons – 16 – H

Patent

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Details

F16H 3/44 (2006.01)

Patent

CA 2558413

A high efficiency drivetrain for an agricultural irrigation system is described. The drivetrain includes a ball ramp brake to inhibit movement of a wheel tower when the drive gear motor is not engaged. In one embodiment, the ball ramp brake is a bi-directional ball ramp brake disposed between the drive gear motor and the gearbox of the drivetrain. Utilizing a ball ramp brake such as this, the gearbox can incorporate much more highly efficient gearing mechanisms, such as for example only, involute gears, beveled gears, hypoid gears, planetary gears or the like. The ball ramp brake is enclosed and includes an oil bath that functions to lubricate the components of the brake, preventing corrosion and dissipating heat.

L'invention concerne une transmission très efficace destinée à un système d'irrigation agricole. La transmission comprend un frein à rampes à billes qui empêche une tour sur roues de se déplacer lorsque le moteur d'engrenages d'entraînement n'est pas embrayé. Dans une forme de réalisation, le frein est un frein à rampes de billes bidirectionnel, placé entre le moteur d'engrenages d'entraînement et la boîte de vitesses de la transmission. En employant un tel frein, la boîte de vitesses peut intégrer des mécanismes d'engrenages beaucoup plus efficaces tels que, par exemple, des engrenages à développante de cercle, des engrenages coniques, hypoïdes, planétaires ou analogue. Le frein à rampes de billes est contenu dans une enveloppe et comprend un bain d'huile qui sert à lubrifier les composants du frein, de prévenir la corrosion et de dissiper la chaleur.

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