The invention relates to a tamping assembly for tamping sleepers (2) of a track (3), comprising a tamping unit (1) having a lowerable tool carrier (4) and oppositely positioned tamping tools (5), wherein each tamping tool (5) is connected via a pivot arm (6) to a squeezing drive (7) for generating a squeezing motion, and wherein a vibration drive (8) is provided for actuation of the tamping tools (5) with a vibratory motion. In this, it is provided that the vibration drive (8) comprises an electromagnetic actuator (11).

A tamping assembly (1) for a track tamping machine is proposed comprising tamping tool pairs (3), which are arranged on a girder (7) guided vertically adjustable in a tamping assembly frame and are formed as swing arms, and the lower tamping pick ends (10) of which intended for plunging into a ballast bed (4) are drivable using an oscillation drive and are hydraulically closable toward one another, wherein a hydraulic cylinder (11) and possibly a distance sensor (7) for determining the hydraulic cylinder position are associated with each of the tamping tools (3) of a tamping tool pair, and the hydraulic cylinders (11) form both the linear closing drive and also the oscillation drive of the tamping tools (3), and wherein electrohydraulic valves (25) are provided for actuation of the hydraulic cylinders (11), which comprise a mechanical hydraulic cylinder actuation valve part (12) and an associated valve electronic unit (13). To provide advantageous construction conditions, it is proposed that the valve electronic unit (13) is mounted in a vibration-damped manner by means of vibration dampers (D) with respect to the hydraulic cylinder (11) and/or the mechanical hydraulic cylinder actuation valve part (12).

A method for automatic autonomous control of a packing machine (C) having a position-measuring device (WMS, GPS, 32) for precise detection of the position of the track-building machine in a track, and signal detection by actuators of working assemblies (23, bv, 18, 26) of the packing machine (C). Track ballast data are detected by sensors (23, bv, 18, 26) during the packing and the current track ballast parameters are detected therefrom and stored for a subsequent work pass and analysed by a device for machine learning (17, ML). An analysis of the track ballast state data (EF7, S9, A3) is created on the basis of machine learning methods (ML, 17) and the track ballast parameters are analysed in view of a drop in compression forces that occurs in the longitudinal track direction and work instructions (EF7, S9, A3) for an optimal work approach are ascertained therefrom and stored. In a subsequent work pass, depending on the current position in the track and on the associated work instruction data, the packing machine carries out the work instructions automatically and autonomously.

A method performs compaction of a track ballast bed by use of a tamping unit having two oppositely positioned tamping tools which, actuated with a vibration, are lowered into the track ballast bed during a tamping operation and moved towards one another with a squeezing motion. In this, it is provided that at least one variable vibration parameter is specified in dependence on a duration of penetration into the track ballast bed, until a required penetration depth of the tamping tools has been reached.

A processing system for carrying out track work includes a rail vehicle having a processing device and a monitoring device for defining and monitoring a permissible working space for the rail vehicle. The processing system further includes a position measuring device for determining a position of the rail vehicle. The rail vehicle is controlled to carry out the track work by using a control device in dependence on the determined position and the defined working space. A method for carrying out track work is also provided.

The invention relates to a tamping assembly for tamping sleepers of a track, comprising a tamping unit having oppositely positioned tamping tools which are mounted on a lowerable tool carrier and connected in each case to a squeezing drive for generating a squeezing motion, wherein an eccentric drive having an eccentric shaft is provided for generating a vibratory motion. In this, it is provided that each squeezing drive is supported on a console having a ring-shaped housing section which is mounted on an eccentric section, associated with the squeezing drive, of the eccentric shaft.

A railway works machine comprises a machine chassis and a works shuttle, the machine chassis having two opposite longitudinal end portions and a middle portion connecting the opposite longitudinal end portions, a volume being created underneath the middle portion of the machine chassis to house at least part of the works shuttle. The shuttle chassis is able to move with respect to the machine chassis back and forth between two end-of-travel positions. A longitudinal locking system allows the machine chassis to be secured to the shuttle chassis in a position for travel. The longitudinal locking system comprises a first locking device locking together a first of the two longitudinal end portions and the shuttle chassis and a second locking device locking together the shuttle chassis and a second of the two longitudinal end portions.

The system includes a track lining apparatus and two tamping apparatuses arranged in parallel, wherein the track lining apparatus includes two track lining hydro-cylinders, and the track lining hydro-cylinder communicates with a hydraulic control system through an oil inlet pipeline and an oil return pipeline; pressure sensors configured to detect pressures of the pipelines are provided on the oil inlet pipeline and the oil return pipeline; the tamping apparatus includes two pairs of tamping components arranged on both sides, where the tamping component includes a pair of packer arms and two pairs of packers; a dynamic force sensor is provided at a joint between the packer arm and the packer, and the dynamic force sensor can detect a transient dynamic downward insertion force generated when the packer is inserted into the ballast bed.

The present disclosure generally relates to an improved railroad track ballast tamping tool. The tamping tool may be lowered into ballast underlying railroad tracks and between railroad track ties for performing ballast tamping operations. The tamping tool includes a shank and a paddle coupled to the shank. The paddle comprises a top ridge disposed on a top surface of the paddle and a bottom ridge disposed on a bottom surface of the paddle. The tamping tool additionally includes a top surface wear tile coupled to the top surface of the paddle and abutting a rear face of the top ridge, a bottom surface wear tile coupled to the bottom surface of the paddle and abutting a rear face of the bottom ridge, and a nose wear tile coupled to the top and bottom surfaces of the paddle and abutting a front face of both the top and bottom ridges.

The invention relates to a tamping assembly for tamping sleepers of a track, including a tamping unit having oppositely positioned tamping tools mounted on a vertically adjustable tool carrier, the tamping tools being coupled in each case via a squeezing drive to a vibration drive, wherein each tamping tool comprises a pivot lever rotatable about a pivot axis and at least one tamping tool mount for accommodating at least one tamping tine. In this, a first squeezing drive is coupled directly to the vibration drive and articulatedly connected to a first pivot lever, and a second squeezing drive is coupled to the vibration drive via a separate coupling unit and articulatedly connected to a link, mounted on the tool carrier, as well as to a second pivot lever. In this manner, the tamping unit can be configured in a very compact way with squeezing drives being arranged one below the other, wherein forces and momentums occurring during operation can be easily controlled.