| 摘要 |
PROBLEM TO BE SOLVED: To provide an axlebox supporting device equipped with an enhanced steering performance during running on a curved track while the running stability during running on a straight track is secured. SOLUTION: The axlebox supporting device 50 is to support each axlebox 40 on a bogie frame by a coupling means 53 extending approximately along the vehicle advancing direction, the axleboxes 40 being installed at the ends of each axle 30 of a bogie 1 for rolling stock, wherein the coupling means 53 is equipped with a box side member 110 connected with a box side connection part 41, a bogie frame side member 120 connected with a bogie frame side connection part 11 and connected with the box side member in such a way as able to make relative displacement in the direction of changing the distance between the box side connection part and the bogie frame side connection part, a first spring element 140 to generate a biasing force in the direction of shortening the distance between the box side connection part and the bogie frame side connection part, a second spring element 150 to generate a biasing force in the direction of expanding the distance between the box side connection part and the bogie frame side connection part, and a spring constant controlling means to enlarge the spring constant of the second spring element in relation to that of the first spring element by changing the spring constant of at least either of the two spring elements when the vehicle is running on the curved track. COPYRIGHT: (C)2009,JPO&INPIT |
