MACHINE FOR TAMPING BALLAST BENEATH THE SLEEPERS OF A RAILWAY TRACK

摘要

A mobile track tamper comprises a frame and a tamping head vertically movably mounted thereon, the tamping head including a pair of vibratory ballast tamping tool implements arranged for reciprocation in the direction of track elongation and capable of tamping ballast under track ties upon vertical downward movement of the tamping head and immersion of the tamping tool implements in the ballast. Each implement is a rigid unit which consists of a tamping tool holder and tamping tools mounted thereon. The tamping tool holder has an arm mounted on the tamping head for pivoting in a vertical plane passing through the rail and two arms extending transversely of the track from the vertically extending arm to the left and to the right of the vertical plane whereby the tamping tool holder is centered with respect to the rail. The tamping tools are symmetrically mounted on the transversely extending holder arms.