Plasser & Theurer Export Von Bahnbaumaschinen Gmbh

Plasser & Theurer Export Von Bahnbaumaschinen Gesellśchaft M.b.h.

Piasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.b.h.

Thomas Philipp

Florian Auer

Harald Daxberger

Josef Hofstätter

Reinhard Boeck

Josef Hofstaetter

Reinhard Böck

Josef Hofstatter

A method for compacting a ballast bed, on which railroad ties and track rails secured thereto are supported, uses a work assembly which is arranged on a track construction machine that can be moved on the track. During a compaction process, a signal is detected and a characteristic variable is derived therefrom by an analysis device in order to evaluate the quality of the ballast bed. The work assembly contains an electric drive, by which the compaction process is at least partly carried out. At least one operating variable of the electric drive is supplied to the analysis device, and a ballast bed characteristic variable is derived from the operating variable by the analysis device.

Method and device for consolidating a ballast bed

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.

Tamping assembly for tamping sleepers of a track

The invention relates to a track maintenance machine having a tamping unit for tamping sleepers of a track lying in a ballast bed, including a tool carrier which is mounted for vertical adjustment on an assembly frame and on which tamping tools are arranged so as to be squeezable towards one another, wherein the tool carrier is coupled to a vertical adjustment drive actuated by means of a control device. In this, a control circuit is set up for controlling a lowering motion of the tool carrier, the control circuit including a controller, a setting device for the vertical adjustment drive and a measuring device for recording the lowering motion. With this, it is possible to provide an optimal course for the lowering motion.

Track maintenance machine and method for tamping sleepers of a track

In a method of operating a tamping unit of a track maintenance machine, the track maintenance machine having the tamping unit is first provided on a track bed. The tamping unit is displaced relative to the track bed. A driving force, acting on the tamping unit and required for the displacement, and acceleration acting on the tamping unit are determined. A ballast force acting between the tamping unit and the track bed is determined by way of the driving force and the acceleration, and is evaluated.

Method of operating a tamping unit of a track maintenance machine, and a tamping device for ballast bed consolidation, and a track maintenance machine

A rail-guided permanent way machine is operated by means of a control device in such a way that at least one state variable (Z) of the permanent way machine is determined in dependence on an operating state, and the at least one state variable is compared to at least one pre-defined limit value (G, G) for monitoring a derailment safety of the permanent way machine. Thus, the derailment safety of the permanent way machine is determined in accordance with the current operating state and monitored. As a result, the permanent way machine has an expanded operating range and increased performance and thus increased efficiency.

Method of operating a rail-guided permanent way machine, and a permanent way machine

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.

Method and device for compacting a track ballast bed

For tamping a track, tamping tines are squeezed towards one another in pairs by a squeezing cylinder. A vibration is superimposed on a linear lift motion of a squeezing piston movable in the squeezing cylinder. The vibration is generated by a vibration piston which is arranged in the squeezing cylinder and which is movable independently of the squeezing piston.

Vibration piston arrangement in the squeezing cylinder of a track tamper

The invention relates to a tamping unit () for tamping sleepers () of a track (), comprising oppositely positioned tamping tools () which are connected in each case to a squeezing cylinder () for generating a squeezing motion, wherein an eccentric drive () is provided for generating a vibratory motion. In this, it is provided that a first squeezing cylinder () is connected mechanically to the eccentric drive (), and that a first pressure chamber () of the first squeezing cylinder () is connected hydraulically via a connecting line () to a second pressure chamber () of a second squeezing cylinder () in order to transmit a pressure change, generated in the first pressure chamber () by means of the eccentric drive (), to the second pressure chamber ().

Tamping unit for tamping sleepers of a track

Ballast () located underneath of sleepers of a track is compacted by immersion and squeezing of compacting tools () set in vibrations. The vibrations introduced into the ballast () during the compacting process are registered as a measure of the ballast compaction. Thus, it is possible to obtain a homogenously compacted track even in the event of different ballast characteristics.

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Leonding, Austria

Thomas Philipp