Hytec recently supplied Bosch Rexroth components to Dynatest Consulting for the construction of a heavy vehicle simulator (HVS) in India.
The contract, valued at R2,5 million, involved the design and manufacture of power units and the installation and commissioning of the Bosch Rexroth components.
The carriage system, with installed power of 18,5 kW, consisted of a carriage pump; a unique hydraulic cylinder fitted with a directional control valve with close loop control; accumulators; side filtration and cooling pumps; and a main system with installed power of 110 kW consisting of close loop pump, side shift cylinders and hydraulic motors.
“The HVS is a mobile machine used to subject road surfaces to accelerated trafficking,” explains André Lindeque, engineering manager, Hytec. “The machine can be used to simulate 20 years of road surface deterioration in as short a time as three months."
Tough conditions
The HVS is hydraulically operated to run a test carriage continuously backwards and forwards along a six metre section of test road surface. The test carriage can be hydraulically loaded to exert pressures from 30 kN, up to 200 kN on the road surface.
For this particular application, the client stipulated that the components would be required to accelerate a mass of two tons, with a maximum wheel load of 20 tons on the road surface, to a speed of 13 km an hour. This needed to be accomplished in a distance of just one and a half metres. The test carriage was then required to travel a distance of six metres before stopping the moving mass in a distance of one and a half metres,” says Lindeque.
“This HVS also requires 10 tons of wheel load force to perform a sinusoidal curve of 85 Hz on the constant speed section of the test surface. In addition, the travel speed of the test carriage needs to be adjustable. As a result of the stipulated operating conditions we selected Bosch Rexroth products to be used throughout the project,” he explains.
Decades of excellence in mobile and industrial hydraulic solutions Axiom Hydraulics
Hydraulic systems & components
For over four decades, Impro Fluidtek has been at the forefront of hydraulic solutions in mobile and industrial applications. This is borne out by four patents and the sale of over three million hydraulic orbital motors across three continents.
Read more...Acoustic imaging detector for gas leaks and partial discharge Artic Driers International
Hydraulic systems & components
The new SUTO iTEC S532 acoustic imaging detector provides an easy and effective way to locate pressurised air and gas leaks and partial discharge (PD) in industrial high-voltage environments.
Read more...Bending the law of size, power and speed Hagglunds Drives SA
Hydraulic systems & components
The Hägglunds Quantum hydraulic motor range exceeds previous performance limits in torque, speed and efficiency. Hägglunds Quantum is the new name for the Hägglunds CB range, and these direct drives can be used in heavy-duty and mobile applications.
Read more...New Black Bruin hydraulic motors for heavy-duty applications Axiom Hydraulics
Editor's Choice Hydraulic systems & components
Axiom Hydraulics and Black Bruin have been working together since the late 1990s, serving southern Africa’s fluid power, mining, industrial, agriculture and marine industries. Now Black Bruin is extending its rotating shaft motor portfolio. With a patent pending design, the new X-series is engineered to enhance the performance of both new and existing machinery in terms of durability, serviceability and cost-effectiveness.
Read more...Bosch Rexroth Africa strengthens its offering
Hydraulic systems & components
Hydraulic and Automation Warehouse (HAW), a Bosch Rexroth Africa group company, has incorporated Power Team SA’s SPXFLOW and Bolting Systems into its offering.
Read more...Oil-free beer and wine processing
Pneumatic systems & components Hydraulic systems & components
The food and beverage industry depends on superior quality, 100% oil-free compressed air to eliminate the presence of unwanted oil vapour throughout the production line.
Read more...Extending the life of hydraulic cylinders and hoses
Hydraulic systems & components
Hose saver protection sleeves extend the life of hydraulic and pneumatic hoses by eliminating unnecessary expenses from downtime, oil loss, contamination, and replacement hoses.
Read more...Hydraulic connectors with residual pressure
Editor's Choice Hydraulic systems & components
Hydraulic connections are vital in both outdoor and indoor industrial machinery. However, the hydraulics lines frequently require connecting and disconnecting for maintenance or changeover. The goal is to enable quick, easy swaps to enhance machine flexibility and productivity.
Read more...Sun carries the load Axiom Hydraulics
Hydraulic systems & components
When valuable lives are hoisted in the air, reliable load holding technology is at its utmost importance. That’s why you can count on Sun’s excellent load holding cartridge valves.
Read more...How to protect against water hammer SA Gauge
Editor's Choice Hydraulic systems & components
Water hammer is a high-pressure surge or wave created by the kinetic energy of moving fluid when it is rapidly forced to stop or change direction, altering the liquid’s velocity. The progression of the water hammer shockwave needs to be detained and slowed before reaching the instrument sensor. SA Gauge manufactures several such devices in order to achieve this.
printer friendly version