A railway track (1) including at least two railway rails (2) and at least one measuring apparatus (3), disposed under at least one of the railway rails (2), for measuring vertical contact pressure, wherein the measuring apparatus (3) has at least one mat-shaped or planar carrying body (4) with a multiplicity of measuring sensors (5), disposed at a distance from one another, for measuring the vertical surface pressure at the respective positions of the respective measuring sensors (5).

A railway track (1) including at least two railway rails (2) and at least one measuring apparatus (3), disposed under at least one of the railway rails (2), for measuring vertical contact pressure, wherein the measuring apparatus (3) has at least one mat-shaped or planar carrying body (4) with a multiplicity of measuring sensors (5), disposed at a distance from one another, for measuring the vertical surface pressure at the respective positions of the respective measuring sensors (5).

Neutralizing deflection in a transportation system comprising connecting a number of support structures to ground. A tube is coupled to the support structures via a number of actuators, wherein the tube defines an interior enclosure through which a vehicle can travel. Utilizing a number of sensors, directional displacement of the support structures can be sensed, and the actuators are controller to counter the sensed displacement of the support structures by producing a directionally-opposite displacement of the tube relative to the support structures.

Neutralizing deflection in a transportation system comprising connecting a number of support structures to ground. A tube is coupled to the support structures via a number of actuators, wherein the tube defines an interior enclosure through which a vehicle can travel. Utilizing a number of sensors, directional displacement of the support structures can be sensed, and the actuators are controller to counter the sensed displacement of the support structures by producing a directionally-opposite displacement of the tube relative to the support structures.

A track maintenance machine for carrying out track position corrections includes a machine frame movable by on-track undercarriages on rails of a track and a track position measuring system having two outer measuring devices and a central measuring device with a common reference base, relative to a longitudinal direction of the machine. The measuring devices are defined in their position relative to the rails. Two mutually aligned measuring chords are tensioned or stretched as a reference base between the outer measuring devices. The central measuring device includes a measuring transducer for detecting position data of the two measuring chords. The position data are fed to an evaluation device in order to determine a longitudinal level for each rail and a versine. Thus, two measuring chords are sufficient to detect all of the track parameters. A method for operation of a track maintenance machine is also provided.

A track maintenance machine for carrying out track position corrections includes a machine frame movable by on-track undercarriages on rails of a track and a track position measuring system having two outer measuring devices and a central measuring device with a common reference base, relative to a longitudinal direction of the machine. The measuring devices are defined in their position relative to the rails. Two mutually aligned measuring chords are tensioned or stretched as a reference base between the outer measuring devices. The central measuring device includes a measuring transducer for detecting position data of the two measuring chords. The position data are fed to an evaluation device in order to determine a longitudinal level for each rail and a versine. Thus, two measuring chords are sufficient to detect all of the track parameters. A method for operation of a track maintenance machine is also provided.

A portable pneumatic loading system for simulating the operation of a subway train is provided, comprising a control cabinet, an powered air station and an air cylinder, wherein a proportional directional valve is disposed between the control cabinet and the powered air station, a control cabinet is connected to the powered air station through an air inlet pipe, and the powered air station is connected to the air cylinder through a hose; a PLC, a switching power supply and a guide rail are arranged in the control cabinet, with the PLC and the switching power supply being connected through signal lines to a wiring terminal fixed on the guide rail; a frequency regulating knob, an emergency stop switch, a main start button, a power start button and a power indicator are embedded in five through holes formed on a door of the control cabinet, respectively; a signal line led out from the top of the control cabinet is connected to the proportional directional valve; and, the air cylinder is connected to the proportional directional valve through a hose. The present invention has the following advantages: the system is light, flexible and portable, and can enter subway tunnels under various working conditions; and, the design is novel and reasonable, the operation is simple, the actual engineering operation is highly feasible, and the on-site adjustment process is more visible.

A system for detecting and pre-warning railway roadbed deformation includes: a control box and an optical fiber-pressure sensor group. The optical fiber-pressure sensor group is formed by disposing a plurality of optical fiber-pressure sensors into a cuboid shape, and is buried in the railway roadbed for detecting magnitude of roadbed deformation in each direction. The direction of the deformation can be acknowledged easily, allowing the staff to eliminate potential risks purposefully. A time series prediction algorithm is performed to forecast a trend of the roadbed deformation in each direction, such that the staff may purposefully overhaul and correct the tracks where the roadbed is deformed excessively. At the same time, the staff may overhaul the track before the magnitude of the roadbed deformation reaches a predetermined value. Potential safety hazards may be eliminated in advance, ensuring the safety for the operation of the railroad.

A system for detecting and pre-warning railway roadbed deformation includes: a control box and an optical fiber-pressure sensor group. The optical fiber-pressure sensor group is formed by disposing a plurality of optical fiber-pressure sensors into a cuboid shape, and is buried in the railway roadbed for detecting magnitude of roadbed deformation in each direction. The direction of the deformation can be acknowledged easily, allowing the staff to eliminate potential risks purposefully. A time series prediction algorithm is performed to forecast a trend of the roadbed deformation in each direction, such that the staff may purposefully overhaul and correct the tracks where the roadbed is deformed excessively. At the same time, the staff may overhaul the track before the magnitude of the roadbed deformation reaches a predetermined value. Potential safety hazards may be eliminated in advance, ensuring the safety for the operation of the railroad.

A method for monitoring a track line by way of a monitoring device which is connected to a sensor extending along the track line. The sensor which is set in vibration delivers measurement data for the monitoring device. A rail vehicle travels on the track line, during which vibrations having known vibration values are introduced into the track line and transmitted to the sensor. Position data of the rail vehicle are recorded and an evaluation device derives a characteristic of the vibration transmission from the vibration values, the position data, and the measurement data for the track line. In this manner, a calibration of the system takes place with only a single run on the track line.