| 摘要 |
An oleo-pneumatic device for actuating electric switches which comprises: a cylinder (1) inside which a free piston (2) can slide so as to define a chamber (24) which contains a working fluid (24); a pump (20) for applying pressurized oil (21) to the piston (2) in order to compress the working fluid (24); control means for stopping the pump when the compressed fluid reaches a preset volume; and means for discharging the oil (21) towards a low-pressure circuit (BP) in order to quickly release any excess stored energy. The control means comprise a microswitch (5) for stopping the pump (20), whose position is a function of the temperature of the working fluid; the microswitch (5) cooperates with a profiled actuation element (6) driven by the compression movement of the piston (2). <IMAGE> |
