Device for damping vibrations of an elevator car

Details Device for damping vibrations of an elevator car Device for damping vibrations of an elevator car

B - Operations, Transporting

66

B

B66B 1/34 (2006.01) B66B 1/28 (2006.01) B66B 7/04 (2006.01) B66B 11/02 (2006.01)

Patent

CA 2421162

In the case of this elevator car (5), active vibration damping cannot dampen the structural resonance of the frame with the car body (5). This only becomes possible when a sufficiently good measurement of the state of deformation is available. Under elastic deformation, the safety plank (1) and the crosshead (2) move parallel and relative to each other, two acceleration sensors (9a) and (9b) aligned vertically (in the z direction) capturing the movement. From the difference between the sensor signals, the y rotation of the safety plank (1) and the crosshead (2) is determined. Together with the signals of the acceleration sensors (ac1) or (ac3), and (ac5) or (ac7), the shear movement of the frame can be determined.

Dans le cas de la présente cabine d'ascenseur (5), l'amortissement actif des vibrations ne peut amortir la résonance structurelle du cadre avec la carrosserie de la cabine (5). Cela devient uniquement possible quand la mesure assez précise de l'état de déformation est disponible. Lorsqu'il y a déformation élastique, le madrier de sécurité (1) et la traverse (2) bougent parallèlement en fonction l'un de l'autre et deux capteurs d'accélération (9a) et (9b) alignés verticalement (dans la direction z) captent le mouvement. La rotation y du madrier de sécurité (1) et de la traverse (2) est déterminée à partir de la différence entre les signaux des deux capteurs. Combinée aux signaux des capteurs d'accélération (ac1) ou (ac3) et (ac5) ou (ac7), il est possible de déterminer le mouvement de cisaillement du cadre.

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