| 摘要 |
PROBLEM TO BE SOLVED: To improve the efficiency of sleeper replacement work on a railway bridge and reduce the cost of work by permitting sleeper replacement by easily raising rails without changing the predetermined standard clearance between rails by using a track working vehicle for sleeper replacement. SOLUTION: Provided are a pair of leg units K located at the front and rear of a track working vehicle S for sleeper replacement, a pair of legs 30 for raising the vehicle by grounding the tip surface 31a to a laying surface 5 for a bridge 1 during advancement which are arranged at bases 20 in a movable manner up-down and back and forth, a driving mechanism for leg 30 back and forth, and a rail grasping mechanism 40 lifting a rail R by following up the lifting of the vehicle S as a result of the advancement of the leg 30 by grasping the rail R provided at the base 20. In addition, an expanding drive mechanism is provided which supports each leg 30 by the base 20 in an expandable manner in the width direction of the vehicle S and each leg 30 is expanded and shrunk.
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