| 摘要 |
PROBLEM TO BE SOLVED: To reduce a burden of maintaining a pantograph position correction device.SOLUTION: A pantograph position correction device 1 incudes: a linear motion/rotation conversion mechanism 40 having a ball screw shaft 41, a ball screw nut 42 and a cylinder 43 for supporting the ball screw nut 42; a frame movement mechanism 15 having a rack gear 16, a pinion gear 17 and a rotating force transmission mechanism 25; a first joint member 48 for connecting the ball screw shaft 41 and a side beam 71a of a truck 70; and a second joint member 49 for connecting the cylinder 43 and the rotating force transmission mechanism 25. The frame movement mechanism 15 moves the frame 5 together with the rack gear 16 outward from a curve in order to arrange the frame 5 at a constant position with respect to the truck 70 in accordance with rotation caused by relative movement of the cylinder 43 with respect to the ball screw shaft 41 when a vehicle body 50 is inclined inward from the curve with respect to the truck 70. |
