In 1992, Randall Hydraulics were commissioned to design the special hardware needed to enable a road paver, rollers and other equipment to operate on the curved, sloping surface of a car manufacturer's high speed test circuit (180 kph+) The project involved the complete resurfacing of the 4.5 km circular banked track, across the full width, up to the safety fence where the slope of the surface is approximately 24°. The project was completed within budget for both cost and time.
In 2003, the same track received some maintenance attention, and Randall Hydraulics were again commissioned to design hardware to facilitate the completion of this work. In addition to road paver and rollers, the maintenance project required the use of a 20 tonne profiler, which was also required to operate up to the highest part of the slope. Once again, the project was completed within budget for both cost and time.
Here the planer takes a cut near the top of the slope in preparation for repair of a weakened joint in the 10-year old surface. The outrigger wheel system compensates automatically for changes in the profile of the track when the machine moves to higher or lower slopes.
The paving train includes a support machine to hold the laying paver on the slope. Randall Hydraulics' control system for this combination allows the driver of the laying paver to control speed and direction of both machines simutaneously.
Other machines specially modified for this project include a steel-drum vibrating roller and a multi-wheel roller.
Copyright Randall Hydraulics Pty Ltd 2006
Randall Hydraulics
Rotary Power
axial piston pumps
and motors
chemical metering pumps
radial piston high torque motors
heavy duty high torqe motors
medium duty cam ring motors
Parker Hannifin
Product range
Gear pumps and motors
Mobile ontrol valves
Sectional control valves and
remote control,systems
Bent-axis pumps and motors
Truck pumps
Bent-axis pumps and motors
Variable displacement,
bent-axis motors
Truck PTOs and pumps
Truck PTOs and pumps
Sundstrand, Sauer and
Sauer-Sundstrand
20 Series axial piston pumps
and motors
40 Series medium duty, axial
piston pumps and motors
51 Series bent-axis motors
90 Series axial piston pumps
and motors
Mico
Brakes
Brakes
Other Brands
High torque wheel &
shaft motors
Hydrostatic drive systems,
pumps and motors
High torque motors
High torque motors
Contact us at:
Randall Hydraulics Pty Ltd
34 Buch Avenue
Epping Victoria 3076
Australia
