Importance

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Abstract

An automatic rail saw includes a frame adapted to be lowered onto a railroad rail by a crane. A lower end of the frame includes a channel for receiving the rail. A releasable clamp mechanism on the frame is operable to clamp the rail in the channel. A saw blade is mounted on the frame for rotation about a rotational axis and for linear movement along a cutting path extending through the channel for cutting of the rail with said blade. The blade is driven by a blade motor and moved along the cutting path by a drive motor. A control system adjusts the rate at which the saw blade moves along the cutting path based on measured parameters such as blade speed, current draw of the drive motor and hydraulic pressure at the drive motor.

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First Claim