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Drive and Controls Systems for Lift Trucks
Precise, Energy-Saving Systems for Electric Lift Trucks
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Due to their limited battery capacity, electric lift trucks and high-lift trucks have to rely upon low energy consumption despite high performance requirements. For this reason, modern electric lift trucks employ pulse control systems for the lifting and steering hydraulics. Among other things, these ensure energy-saving, low-noise operation. In high-lift trucks, compact power units are ideal for meeting criteria such as reliability and ease of operation.
Recognition of functions
Factory-calibrated, non-contact sensors situated on the directional control valve block and the steering column ensure a demand-oriented supply to the steering or tower hydraulics functions. This is achieved by means of one or two variable-speed, noise-reduced Silence gear pumps. An important factor in this process is the conversion of the mechanical spool stroke and steering motion into a proportional electrical signal for the pulse control system.
Functions as a competitive advantage
The pulse control system ensures energy-saving, low-noise operation by means of demand-oriented flow control. This technology means that the tower and steering hydraulics can be operated with maximum sensitivity. Electrical signal transmission takes place by means of factory-calibrated, non-wearing sensors, without the need for additional drive and adjustment elements. Moreover, we offer an extensive array of possibilities for further optimising your system.
Ancillary functions, such as secondary valves and mutually tuned components, can also be integrated.
Systems for high-lift trucks
These days, fork-lift trucks and high-lift trucks are indispensable assistants in the fields of production and retail. Besides ever more demanding requirements by operators in terms of ergonomics and the reliability and robustness of equipment,
functional, good-value systems are also of vital importance to manufacturers. Compact power units satisfy these requirements one hundred percent, for the Rexroth system is tough, ready-to-install and suitable for a great variety of applications.
Efficient and highly precise
Hydraulic units consisting of an electric motor, gear pump, oil tank and variously equipped valve blocks are employed. These units can be augmented by the addition of manufacturer-specific options, including valve electronics. Particularly worthy of note is the lowering function with electric proportional control from the drawbar, enabling highly sensitive lowering and positioning with pin-point accuracy. The low flow resistance permits an especially high lowering speed – even with low loads. This considerably increases the working efficiency of the high-lift truck.
Compact and ready-to-install
Rexroth offers ready-to-install compact power units which do not require preassembly by the manufacturer. The modular design of this sturdy, reliable technology offers a variety of possibilities for different units and bearing-force classes. Furthermore, compact power units provide a multitude of opportunities for system optimisation. In this way, options such as ancillary valves, manufacturer-specific tank shapes and fastening elements can be integrated without problem.
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