The 4000 Railway Alignment System consists of a cart mounted laser and a receiving assembly mounted on the front of the tamper's normal aligning chord. The receiving assembly consists of a sensor, servo-platform, light bar, and control panel. When the system is set up, the laser cart is positioned up to 600m ahead of the tamper. The laser is manually aligned to the sensor establishing an accurate chord reference.

When the receiving assembly is switched to "automatic", the sensor locks on to the laser as the servo-platform positions the front point of the aligning chord on the laser's beam reference. The tamper then begins aligning the track moving towards the laser. The front point of the alignment chord is held within 6mm accuracy to the laser's beam. This accuracy is further enhanced through the correction ratio of the machine.

Technical Breakthrough:

Significant technological breakthroughs give Model 4000 Railway Alignment System unmatched characteristics of accuracy, range of effectiveness and speed of set-up aligning railroad track. Designed to greatly augment railroad tamper lining systems, the Model 4000 Railway Alignment laser increases the tamper lining chord to 600m under normal conditions. The Model 4000 Railway Alignment laser does this with greater accuracy than ever before possible.

Outstanding Advantages of the Model 4000 Railway Alignment System:

Aligns kilometers of tangent track with one pass

Eliminates long swings and other line imperfections

Is easy to set-up and use

Adapts to any tamper system

Restores or changes track centers

Aligns to surveyor stakes

Lengthens gradual approach to fixed objects ( bridge, crossing, switches, etc. )

Align away from fixed objects.

Allows track to be replaced in straight line between two fixed objects .

Model 4000 Railway Alignment System - Extends Lining Chord for greater accuracy

The Laser:

The laser's beam is highly visible and accurate up to 600m. The laser beam is reliable and constant with no modulation. For initial rough alignment to the Light Bar the Laser is equipped with a standard rifle telescope. Fine adjustment differential screws for horizontal and vertical alignment speed the set-up process.

The laser is hermetically sealed in a thick, double wall aluminium tube for maximum durability, dependability and freedom from the effects of moisture and dust.

The Sensor:

The photo electric cells of the Model 4000 Sensor are mounted in silicone rubber within a rugged, cast aluminium case which is, in turn, shock mounted to the front buggy. The Sensor is fully effective within the 600m range of the laser and accurate to 6mm in this range. The Sensor's electronic system averages beam bounce for further accuracy. The Sensor has a vandal resistant cover.

The Light Bar:

Bright, high intensity automotive lamps are used for the Light Bar because of their high visibility at long range and ready replacement from any automotive store. Quick disconnects are provided and limit lights indicate the 150mm maximum throw of track, right or left.

The Control Panel:

The ruggedly constructed Control Panel provides for stand-by, automatic and off switching for the front buggy mounted Sensor and Light Bar. The Control Panel adapts to any tamper system voltage ( 150v AC, 127v AC, 24v AC, 12v DC)

Amberg GRP System:

Universal system solution configurable for user specific applications.

Amberg GRP System FX is the proven, universal system solution for acquiring precise track geometry and track environment data. Thanks to the modular design the surveying system can be optimally adapted to suit individual requirements. The system is easy to transport, allowing surveying to be easily integrated in railway construction processes.

Available system configurations:

GRP 1000

GRP 3000

GPR 5000

Within the GRP System FX family, the GRP 1000 is the robust system configuration for track measurement and construction, meeting the exacting demands of high productivity and accuracy.

The GRP 1000 is a powerful partner:

Slab track construction

Ballasted track construction and maintenance

Quality control of track geometry

Key features of GRP 1000:

Robust track gauging trolley with integrated high precision sensors for measurement of gauge, superelevation (cant), stationing (chainage)

Precise 3D track coordinates for combined operation of GRP system and precision total station

High data acquisition update frequency as basis for real-time computation

modular hardware design allowing flexible and cost-saving operation

Integrated power supply

Unlimited electro-magnetic compatibility - using PET wheels

Hardware fully expandable for other railway surveying tasks.

The GRP 3000 is the versatile measuring system for point-by-point clearance assessments as well as for track geometry and control point surveys.

The GRP 3000 provides flexible solutions

Clearance profile surveying

Design as-built surveys

Catenary works

Control point surveys

Track geometry surveys

Key features of GRP 3000

Unique combination of precise track geometry recording unit TGS FX and Profiler 110 FX for automatic clearance profile surveying

Visible red laser dot for accurate and rapid manual surveying of specific points

Precise 3D track coordinates for combined operation of GRP system and precision total station

High data acquisition update frequency as basis for real-time computation

Modular hardware design allowing flexible and cost-saving operation

Integrated power supply

Unlimited electro-magnetic compatibility - using PET wheels

Hardware fully expandable for other railway surveying tasks

The GRP 5000 is the powerful system solution for comprehensive route and infrastructure documentation and assessments. It is also first choice for detailed visual condition surveys of tunnels for subsequent structure inspections.

GRP 5000 defines the new industry standard for

Complete route surveys and lineside structures for clearance and design purposes

Inventory and design surveying

State documentation of tunnel structures

Key features of GRP 5000

High-speed kinematic scanning system integrating laser scanner Amberg Profiler 5002

Automatic acquisition of track position and line side structures and objects of interest

Very high measuring density with up to 500'000 measured points per second

Modular hardware design allowing flexible and cost-saving operation

Hardware fully expandable for other railway surveying tasks

Disto laser Automatic level Construction level Grade laser Optical level Pipe laser Slope laser Survey laser Theodolite Total Station

P: 02 9660 8333 F: 02 9692 8600 10 Hill Street Leichhardt NSW 2040 Australia