In line with the relevant accident prevention regulations set out by the employers' liability insurance associations, industrial trucks must be operated in a manner that ensures that stability is maintained. For this reason, the operator is ultimately responsible for ensuring that the load lifted on the fork arms does not exceed the approved load capacity, that the load centre of gravity is taken into account and that the maximum lift height is not exceeded. However, operators are often faced with the challenge of balancing three unknown factors, whose values can only be roughly estimated. However, without a detailed knowledge of the information specified by each manufacturer in the load capacity diagram, operators may expose themselves and others to serious danger. The Linde Safety Pilot offers excellent support in this situation because in future operators can simply look at the display mounted at eye level to find the answer to these three questions. The operator is not only shown the load centre of gravity; the load weight currently placed on the fork arms, the current lift height, the tilt angle of the fork arms and the maximum lift height up to which the load may be raised are also displayed. To help operators quickly identify all of these values, the display features a clear design, it shows information in image format and the volume of numbers shown is kept to a minimum.
The Linde Safety Pilot is not just an indicating instrument though: If operators are working in critical areas or if operating errors occur, they receive a visual and acoustic warning, and the truck control unit also actively intervenes and regulates the truck functions. For example, if an operator wishes to place a load on the shelf and is approaching the load capacity limit, the lifting speed is reduced. If the operator continues to lift the load and reaches the maximum load capacity, the truck is deactivated and safety-critical lifting and tilting functions are disabled. The driving speed is managed in the same way, according to the load, lift height, tilt angle and load centre of gravity distance. In other words, the speed of the truck is decreased continuously if the operator lifts the load while driving.
The technology behind the driver assistance system relies on sensors that measure data at different points on the truck and then forward this information to the truck control unit. An electronic load capacity diagram – the cornerstone of the Linde Safety Pilot system – is thus created.
One solution — numerous functions
Greater protection against operating errors is just one of the advantages of the innovative Linde Safety Pilot system. The system also provides various comfort features that assist operators with their work and offers them significant added value. The sub-menus detailed below can be called up via a rotary push-button mounted in the armrest underneath the operating lever:
Lift height pre-selector for precise control of the lift height at the touch of a button
Lifting limits for preventing collision damage to ceilings or gates
Lowering limits for preventing noise and for protecting the fork arms against wear
Load scale with a practical load addition function — for identifying the
payload on a truck, for instance
Driving dynamics settings that can be changed independently by the operating company
Energy consumption display showing the current kWh consumption value
Speed limit that can be applied when driving with a trailer, for instance
The introduction of the Linde Safety Pilot system is the culmination of many years of development and testing. "Although electronic safety assistance systems like ESC (Electronic Stability Control) are now part of the standard equipment of many passenger vehicles, a solution of this nature cannot be applied in exactly the same format to trucks. Appropriately adapting the solution requires special technical expertise due to greater variance between the load capacity classes, tyres, masts and load centres of gravity. This is why we are proud to offer our customers an assistance system tailored to the needs of the truck in the form of the Linde Safety Pilot system. This solution will enable our customers to operate their trucks in a much safer and more productive manner while also making forklift trucks more comfortable and easier to drive", says Harald Will, Chief Technology Officer (CTO) at Linde MH.
Linde Material Handling GmbH, a KION Group AG company, is one of the world's leading manufacturers of forklift trucks and warehouse technology equipment, and is the market leader in Europe. The company also offers the expertise it has gained from many decades of developing and producing electrical drive systems to external customers for a wide range of applications. Active on an international scale, Linde Material Handling operates production and assembly plants in all key regions worldwide, as well as a global sales and service network with representatives in more than 100 countries. In the 2013 financial year, Linde Material Handling employed a staff of around 13,800 and achieved sales of EUR 2.881 billion.
