A tie crane is a piece of rail transport maintenance of way equipment used to move and handle the railroad ties (sleepers) used in rail tracks using track relaying. The machines are used as an alternative to the manual labour once used.
Mounted on a lightweight chassis with rail wheels, the operators cab and lifting arm pivot on a base, enabling 360 degree rotation. The end of the lifting arm has a gripper for picking up sleepers, and a movable wrist to allow the tie to be positioned. Often a small trolley is connected to the tie crane by a drawbar, for either storage of new sleepers to be placed into the track, or for taking away old sleepers that have been removed.
Famous quotes containing the words tie and/or crane:
“Let not the tie be mercenary, though the service is measured in money. Make yourself necessary to somebody. Do not make life hard to any.”
—Ralph Waldo Emerson (1803–1882)
“when wine redeems the sight,
Narrowing the mustard scansions of the eyes,”
—Hart Crane (1899–1932)