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f+h Intralogistics 4/2016

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f+h Intralogistics 4/2016

Jungheinrich has

Jungheinrich has launched a new, narrow-aisle truck generation Highlights of the new Jungheinrich EKX 514-516 order picker/tri-lateral stacker aka “combi” stacker include new motor technology and a patented vibration damping system. RUBRIK INDUSTRIAL TRUCKS Developed from the ground up at Jungheinrich, the new motor technology represents the core of the EKX 514-516 series, which features a payload lifting capacity of 1,600 kg up to a height of 17.5 m. For the market debut of this synchronous reluctance motor, the manufacturer has coupled the high performance and energy efficiency of permanent-magnet synchronous motors with the cost and maintenance advantages of three-phase asynchronous motors. Synchronous reluctance motors deliver even greater efficiency The main advantage of synchronous reluctance motors lies in the higher efficiency of synchronous over asynchronous drives. The International Efficiency (IE) rating indicates the efficiency class of electric motors, with classes ranging from IE1 (Standard Efficiency) to IE4 (Super Premium Efficiency). In the EKX 514-516 series the IE3-class, maintenance-free synchronous drives deliver the highest possible electric-motor efficiency. Up to now asynchronous motors were fitted with inductively excited copper rotors. This however resulted in energy being lost to the rotors. For the new synchronous reluctance motor Jungheinrich developed a rotor composed exclusively of punched sheet metal. This innovation means the motor operates without windings or magnets, does not dissipate energy to the rotor and cuts energy losses in half. Under comparable operating conditions, for example in terms of speed, rpm and distance, field trials of a combi stacker fitted with a synchronous reluctance motor demonstrate savings of up to 44.8 percent compared to the same stacker fitted with an asynchronous reluctance motor. By halving energy losses compared with the preceding model, energy efficiency has jumped from 90 to 95 percent. Furthermore, as the rotors do not heat up, no fan is needed. In addition, the new technology retains all the advantages associated with AC technology, including good controllability, closed system design, silent operation, low wear and high reliability over the entire lifetime. These synchronous reluctance motors boast even more benefits, such as high torque, compact design and lower moment of inertia. On top of that the absence of permanent magnets makes this technology inexpensive. f+h Intralogistics 4/2016

Ecologically motor technology By having the lowest energy consumption values for industrial truck fleets, Jungheinrich already meets the requirements of the EU ecodesign directive 2009/125 / EC. This directive establishes the “framework for setting ecodesign requirements for energy-related products” for subsequent implementation into national law. Although the framework-derived implementation measures for the forklift truck industry have not yet been defined at the country level, the criteria can already be foreseen. What is clear is that a significant tightening of the requirements compared with the prior state of the art is on the cards, and these will be met with the new motor technology. On the other hand, warehouse operators are already increasingly focussing on energy efficiency and resultant cost savings. “The trend for customers to demand more energy efficiency and sustainable products is on the up. With our trucks we help companies reach their internal CO 2 reduction targets faster,” says Dr. Oliver Lücke, Board of Management member in charge of Engineering at Hamburg-based Jungheinrich AG. Vibration damping for safe and quiet lifting In addition, with the new truck series Jungheinrich is premiering a patented vibration damping system. Vibration absorbers in the optional Floor Pro power module noticeably reduce lateral oscillations of the mast and cabin when operating on uneven floors. The Floor Pro package not only contributes to quieter and up to 30 percent faster travel – even on floors not suited for narrow aisle forklifts – but also improves safety, driving comfort and throughput. In addition, the system protects the payload and truck while reducing maintenance costs. “The basic principle behind the design is similar to the approach – based on extra mass with concomitant inertia – for constructing earthquakeproof high-rise buildings. The main MULTIMEDIA CONTENT About Jungheinrich Jungheinrich is one of the world’s leading companies in the industrial truck, warehousing and material flow engineering sectors. As a manufacturing service and solution provider in the field of intralogistics, the company, based in Hamburg, Germany, supports its customers with a comprehensive product range that includes forklift trucks, shelving systems, services and consulting. The Jungheinrich share is traded on all German stock exchanges. difference with high-rise blocks in this case is that instead of attaching additional mass the design exploits the truck’s inherent mass,” explains Shirley Li, Product Manager of VNA Truck at Jungheinrich China. In conjunction with a spring damper system the design provides an additional degree of freedom between the driver’s cab and the payload carrier, thereby decoupling a portion of the masses. The goal is to allow narrow-aisle trucks to work safely and efficiently even on floors that were originally designed solely for reach trucks – at lift heights of up to 10 m. A single charge is good for two shifts In addition to novel motor technology and effective vibration damping, the stacker features cutting-edge control technology and efficient energy management. Thanks to the lightweight design of the EKX 514-516, achieved by using high-strength steels, Jungheinrich managed to cut the weight down by 150 kg. Against this background, Jungheinrich guarantees that the combi stacker can master even the most challenging operations over two full shifts on just a single battery charge. This also means that replacement batteries, charging stations, expensive equipment and the associated manpower costs for battery replacement are relegated to the past. What’s more, the EKX 514-516 features various process integration modules, including RFID truck location tracking for more flexibility and adapting the truck speed optimally to the respective warehouse topology. It also offers redundant height and distance measurement and a logistics interface that communicates, for instance, with the warehouse management system and the on-board control system. Warehouse operators can also go for the optional Jungheinrich Warehouse Navigation system with semi-automatic target approach and profit from performance improvements of up to 25 percent. Adding an extra 2 × 100 mm reach distance, the optional Sideshift Plus performance package is also new. This module provides for a greater safety margin in narrow aisles. It also increases speed when operating in inductive guidance mode, while simultaneously simplifying the handling of payloads. By combining intelligent assistance systems with the innovative synchronous reluctance motors Jungheinrich has made a significant step in improving energy efficiency and productivity. According to Zhu Jia, Vice President Logistic System of Jungheinrich China, “Even if the expectations placed on the new technology were already high, in practice they have been surpassed. The high potential of synchronous technology will certainly cross over to other trucks and help us increase our leading position in the field of energy efficiency.” Learn more about the achievement spectrum of the enterprise Photographs: Jungheinrich f+h Intralogistics 4/2016


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