A method and an arrangement for controlling a linear motor

Details A method and an arrangement for controlling a linear motor A method and an arrangement for controlling a linear motor

F - Mech Eng,Light,Heat,Weapons

01

B

F01B 11/00 (2006.01)

Patent

CA 2049352

A fluid driven linear motor with a piston (4) in a cylinder (5) is supplied with driving fluid under the control of a sliding valve device (8) having a slide (9) being moved between its terminal positions and being retained therein by means of the driving fluid. A pilot rod (22) connected to the piston (4) controls the supply of driving fluid to the respective sides of the slide (9). The pilot rod (22) is slidingly received in a cavity (12) in the slide and has sections (23 25) of reduced diameter which act as valves in certain positions.

Un moteur linéaire hydraulique doté d'un piston (4) se trouvant dans un cylindre (5), est alimenté en fluide d'entraînement sous la commande d'un dispositif de vanne à tiroir (8), comportant un tiroir (9) se déplaçant entre ses positions terminales et retenu entre ces dernières au moyen du fluide d'entraînement. Une tige pilote (22) reliée audit piston (4), commande l'alimentation en fluide d'entraînement vers les côtés respectifs du tiroir (9). Ladite tige pilote (22) est reçue de manière coulissante dans une cavité (12) située dans le tiroir, et comporte des sections (23 à 25) de diamètre réduit, faisant office de vannes dans certaines positions.

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