Power take-off transmission for pumps of STIEBEL as a driver for energy-efficient power use
More than ever, intelligent and sustainable drive solutions that help reduce fuel consumption and thereby ensure environmentally friendly and efficient operation are in demand today in the field of construction and agricultural machinery. For these special challenges, flexibility is needed, particularly in regard to transmissions. Therefore, the specialists at STIEBEL – located in Waldbröl, near to Cologne – individually tune your drives for mobile hydraulic applications to act as a dynamic link between the combustion engine and the hydraulic / electrical system.
Powershift pump on the drive side to save energy
Currently, a power take-off transmission for pumps that was specially developed at STIEBEL is helping construction and agricultural equipment become more energy-efficient. With a maximum input power of 520 kW, a power take-off output of 200 kW on each axle, and a power take-off ratio of 1:0.8 for the engine speed, it is part of a modular engine-transmission unit that enables economical energy and fuel consumption. As a diesel-electric hybrid solution, it is also an environmentally friendly solution.
In normal operating mode, the diesel engine and the transmission are in use . These operate the hydraulic auxiliary equipment and a generator that charges the energy storage system. The braking energy is also used sustainably, with the help of the powershift pump output of the power take-off transmission for pumps, and supplied by the generator as electrical energy to the energy storage system. Disconnecting the auxiliary equipment and returning the energy from the energy storage system to the drive train then enables particularly efficient vehicle operation. Thus, maximum efficiency can be achieved by the hybrid diesel-electric power generation, increasing traction and reducing operating costs.
“Our goal is to help shape technological progress, especially in such projects where all of our experience and knowledge are in demand. We provide very precise developments in this field, matching the requirements down to the smallest technical detail,” says Paul Hermann Schumacher, Managing Director of STIEBEL GmbH & Co. KG. “The demand for environmentally friendly electrical traction drives has increased noticeably in recent years. And the proven flexibility of our compact, robust and precise transmissions will also continue to play an ever-increasing role in this field, whether for tractors, harvesters, loaders, excavators, or other construction and agricultural machinery of reputable manufacturers”
At STIEBEL, the technical details are already taken into consideration during the selection of the material. For example, the shaft seals of Stiebel power take-off transmissions for pumps are made of viton, while the toothed hub profiles are made of chromium molybdenum steel. Oil-lubricated hollow profile shafts prevent wearing of the pump shafts. The SAE motor connections provide thermal relief of the torsional vibration dampers using precisely matched air vents. The diversity in the transmission ratios also provides a high degree of flexibility. In many cases, oil cooling can be eliminated because Stiebel combines a special lubrication system with strongly ribbed housings. This results in high efficiency. In addition, there are many special options that will also be implemented in future energy-efficient transmission solutions. Visitors can look forward to the innovations from STIEBEL at the upcoming bauma trade fair.
Next trade fair: bauma, Munich, April 11-17, 2016, Hall A4 / booth 338
Since its founding in 1946 the focus of Stiebel-Getriebebau has been on the developing and manufacturing of gearboxes. Today the company known as the driving force is a widely respected partner for gearbox solutions in conveyor technology and mobile hydraulics. As a specialist for customized gearbox designs, Stiebel offers individual answers to complex challenges in numerous businesses. As a well-known brand worldwide for gearbox solutions the company from Waldbröl (70km east of Cologne) is always close to its customers – with various branches and subsidiaries.