| 摘要 |
A ballast tamping implement capable of tamping ballast under track ties is constituted by a rigid unit which consists of a tamping tool holder and tamping tools mounted thereon for immersion in the ballast to the left and to the right of a track rail. The tamping tool holder has an arm mounted on the tamper for pivoting in a vertical plane passing through the track 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. |
