ROOF PLATE OPENING/CLOSING DEVICE FOR WING VEHICLE

PROBLEM TO BE SOLVED: To make the telescopic speed of actuators 12b lower in a certain region and higher in the other region in opening/closing a roof plate and sufficiently reduce a difference in length between both actuators 12b based on a difference if occurring in telescopic speed between the pair of actuators 12b provided on one roof plate. SOLUTION: First and second flow paths 60, 61 are provided in parallel to each other which are paths for operating oil to be drained from an elongation side pressure chamber 17 when the actuators 12b are telescopically operated. On the way of the first flow path 60, a spool valve 63 is provided which functions to close the actuators 12b when contracted to a preset length or shorter. A fixed restricting flow path 73 is provided on the way of the second flow path 61. COPYRIGHT: (C)2005,JPO&NCIPI