JP2007320491A5 - - Google Patents

Claims (3)

A pair of front and rear trolleys traveling on a track rail , a vehicle body mounted on the trolley, and four maintenance vehicle lifting and lowering devices disposed at each of the vehicle body base portions at the four front and rear and left and right sides of the vehicle body, A railway maintenance vehicle in which each of the maintenance vehicle elevating devices has an elevating cylinder that moves the vehicle body in the vertical direction with respect to the track rail, and a horizontal movement cylinder that moves the elevating cylinder in the width direction of the vehicle body. The maintenance vehicle for railways , wherein the horizontal movement cylinder has a piston rod that extends toward the outside of the vehicle body, and the lifting cylinder is provided at a tip portion of the piston rod. . A large box in which each of the maintenance vehicle lifting and lowering devices is arranged extending in the width direction of the vehicle body, is formed hollow therein, and an outer end portion in the width direction of the vehicle body is opened; and the large box A small box that is slidably disposed in the hollow portion of the large box, is exposed from the outer end in the width direction of the large box, can protrude to the outside of the vehicle body, and is formed hollow therein. The horizontal movement cylinder is fixed to the large box, and a piston rod of the horizontal movement cylinder is attached to an end of the small box. Railway maintenance vehicle . 3. The railroad vehicle according to claim 2, wherein each of the maintenance vehicle elevating devices has a roller that rotates in contact with the small box as a guide for extending the small box to the outside of the vehicle body . 4. Maintenance vehicle .