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Drive and Controls Systems for Lift Trucks
Future Prospects for Extended Functions
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Today, systems such as electronically controlled hydrostatic drives and electronic hitch control EHR for tractors are the state of the art in the most varied array of applications. Likewise, the lift trucks of tomorrow will be considerably influenced by systems intended to increase benefits to customers and reliability in operation. Factors such as variable tilting speeds, vibration damping and load-torque limitation will determine the development of future systems. Rexroth is facing up to these requirements and is already working on ideas for the expansion of functions in drive and control systems for the lift trucks of tomorrow.
Making the most of new possibilities
These examples from our glance into the future of tomorrow’s lift trucks all show one thing: that the combining of specialist knowledge is of particular importance in the implementation of future systems. Experience has shown that the matching of individual components plays a central part in the optimisation of the overall function. Thus for many years Rexroth has been encouraging intensive cooperation with lift-truck manufacturers. Always with the aim of developing systems to increase benefits to customers and reliability.
The future starts here
Digital control units for actuating the working hydraulics and the drive act as an extended lift-truck management system, with interfaces via CAN bus to the engine management system, assisted by sensors that provide constant information about the load and driving conditions of the lift truck. Driver assistance through optical and acoustic signals and cautious intervention in functions such as the reduction of tilting speed as a function of the lifting height, for example, increase the lift-truck’s performance without impairing function.
Comfort functions such as active and passive vibration damping and the automation of functions and motion sequences reduce driver fatigue, ensuring greater safety and work efficiency. Permanent, background monitoring of load and driving conditions ensures safety and reliability, allowing the machine to be used as far as physical limitations permit.
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