Gantry Crane and Method for Laying a Track

Abstract

A gantry crane is equipped with devices for transporting old and new ties and with pads, which are provided for spacing the new ties. The device for transporting the pads is provided in the form of pincers having two pincer parts that can be displaced relative to one another in a manner that is normal to a longitudinal direction of the frame. The device for transporting the new ties is located between the device for transporting the pads and the device for transporting the old ties.

1 . A gantry crane having a crane frame with traveling gears for displacement on crane rails, and having apparatuses for transporting old and new sleepers and rail pads—provided for spacing apart the new sleepers—wherein the apparatus for transporting the rail pads is designed as grippers, with two gripper parts which can be moved in relation to one another by a drive in a direction normal to a longitudinal direction of the frame, and is arranged between the crane frame and traveling gear, and in that the apparatus for transporting the new sleepers is positioned between the apparatus for transporting the rail pads and the apparatus for transporting the old sleepers. 
   
   
       2 . The gantry crane as claimed in  claim 1 , wherein the provision of a total of two pairs of grippers which are spaced apart from one another in a direction normal to the longitudinal direction of the frame and are each made up of two grippers spaced apart from one another in the longitudinal direction of the frame. 
   
   
       3 . A method for continuously laying a track formed from sleepers and rails, it being the case that new sleepers are transported to a transfer end of a new-sleeper conveyor, and are deposited thereon, by the forward travel of a gantry crane, while, at the same time, old sleepers are picked up, in order to be transported away, by the return travel of the gantry crane, wherein, as the new sleepers are deposited, the two rail pads—resting on new sleepers deposited in the previous operating cycle of the gantry crane—are picked up by grippers connected to the gantry crane, and in that, parallel to the operation of the old sleepers being deposited and the new sleepers being picked up by the gantry crane, the rail pads gripped by the grippers are dumped into a container.