Device for measuring the forces generated by a rotor imbalance

Details Device for measuring the forces generated by a rotor imbalance Device for measuring the forces generated by a rotor imbalance

G - Physics

01

M

G01M 1/04 (2006.01) G01M 1/16 (2006.01)

Patent

CA 2324315

A device for measuring forces that are generated by an unbalance of a rotor 1, in particular a motor vehicle wheel, with a measuring shaft 2 mounted rotating on its axis 23, to which the rotor 1 for measuring is attached, and a mounting 3 - displaying a force sensor 4, 5 - of the measuring shaft 2 on a stationary frame 6 wherein the mounting 3 has an intermediate frame 7 against which the measuring shaft 2 is supported via a first force sensor 4 and at least one virtual mounting position 24 and the intermediate frame 7 is supported on the stationary frame 6 via a further force sensor 5. In this way, reduced force dynamics compared to conventional machines with floating mounting.

L'invention concerne un dispositif pour mesurer des forces produites par un défaut d'équilibrage d'un rotor (1), notamment d'une roue de véhicule. Ce dispositif comprend un arbre de mesure (2) monté de manière à pouvoir tourner autour de son axe (23) et sur lequel le rotor (1) est fixé pour la mesure, ainsi qu'un ensemble paliers (3) pour le montage de l'arbre de mesure (2) sur un cadre fixe (6), ledit ensemble paliers (3) présentant des dynamomètres (4, 5) et un cadre intermédiaire (7) sur lequel l'arbre de mesure (2) prend appui par l'intermédiaire d'un premier dynamomètre (4) et d'au moins un point d'appui virtuel (24). Le cadre intermédiaire (7) prend appui sur le cadre fixe (6) par l'intermédiaire d'un autre dynamomètre. Cette configuration permet d'obtenir une dynamique des forces réduite par rapport aux machines classiques à montage flottant.

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