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f+h Intralogistics 1/2015

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f+h Intralogistics 1/2015


INDUSTRIAL TRUCKS Fleet management helps saving costs As part of a fleet management project, Stöcklin Logistik AG performed an extensive analysis at the consumer goods manufacturer, M-Industrie, which ultimately resulted in an integrated fleet management system. The intralogistics system and industrial truck manufacturer used pilot companies of the consumer goods manufacturer to demonstrate how operating costs can be reduced while increasing the security and efficiency of processes. M-Industrie, a Swiss group of companies, consists of eighteen companies in Switzerland and three operations abroad. Ranging from jam to detergent, the group manufactures more than 20,000 different products, and is thus, according to the company‘s own information, one of the largest manufacturers of store brands. M-Industrie operates fleets of industrial trucks at around thirty locations. These fleets are continuously being updated taking the individual requirements of the specific companies into consideration. This means that today more than 1,200 industrial trucks are in use and are being utilized differently by each company depending on the type of vehicle, suppliers, financing, servicing, and spare part procurement/ management. The main focus of the fleet analysis commissioned by M-Industrie and completed by Stöcklin Logistik was to check the use of the relevant vehicles as well as the quantitative requirements and designation of device specifications. The aim of the analysis was to minimize operating and maintenance costs, while improving replacement costs and financing conditions. Identify potential to ensure sustainable operations Estavayer Lait SA (ELSA) is one of the companies which belongs to the M-Industrie. Its headquarter is based in Estavayer-le-Lac, a town in the canton of Freiburg, where it operates the largest dairy. Due to the high level of automation in the production, the company is able to process more than 269 million kilograms of milk per year and can thus provide a wide range of dairy products. Various Swiss cheese, as well as 22 f+h Intralogistics 1/2015

INDUSTRIAL TRUCKS Before the optimization measures were implemented by Stöcklin, some of these forklifts were operating on a continuous basis (4,000 hours/year) with up to three replacement batteries per device. By using the energy-efficient lithium ion systems from Stöcklin-Power, the devices are able to operate with one battery only, along with brief interim charging. As the device can now be operated for three shifts without the need of a battery change, this saves up to 30 minutes per day and per employee. Maintenance work on the battery, such as refilling water, is also no longer required. Operational restrictions no longer apply as gassing does not occur. As power requirements during charging have been reduced by around thirty percent, there has been a positive impact on the sustainability of energy bills. In contrast to comparable systems that use lithium cobalt cells, which are often not completely risk-free, and that operate with charge factors of 1.0 (discharged battery is charged within one hour), the lithium ion system from Stöcklin Logistik uses lithium iron phosphate cells. With a charge factor of 0.5 (discharged battery is charged in max. two hours), the energy system guarantees a battery service life of 5,000 charging cycles (at 80 percent discharge). A specially developed, active battery management system reliably monitors and protects the rechargeable battery. The temperature, voltage, current, and charge state is permanently and accurately measured. Overheating, overcharging, and total discharge is thus not possible. Secure and efficient picking Stöcklin is implementing its ESPK 20 pickers to effectively assist in the various picking areas at ELSA. The determining factors for this measure are the compact dimensions, ergonomic design and compatibility of the devices. Each industrial truck is equipped with a 2.5 kW three-phase motor with a directly connected steering motor and the relevant CAN bus compatible electronic controls. The picker forklifts are steered using spherically suspended tiller heads with control elements for driving and the hydraulics. Driving is only possible when the driver is standing on the designated contact mat in the cab. As this device is equipped with terrain compensation and automatic speed reduction around curves, it has excellent driving characteristics even at high speeds of 14 km/h. The energy that is released during electronic deceleration can be reused by means of current regeneration. The alternating current drive and steering motors of the ESPL 20 are also energy-efficient and thus have an environmentally-friendly design. To further improve efficiency and safety when loading trucks, amongst other things, ergonomically designed type EDP 20 elevat- imported cheese from France, Germany and Denmark is distributed via its own logistic platform. As part of the examination, the original comprehensive fleet of 120 forklift vehicles at ELSA was reduced by around ten percent to 109 units. Equal and similar optimization potential was identified, developed and gradually implemented as part of a uniformly coordinated fleet management system for the entire M-Industrie group. Stöcklin type ESI 1600 electric platform stackers (Image 01) with double stacking function and lift of 1,800 mm are used in the truck loading, block storage, racking storage and picking areas in Estavayer-le-Lac. The industrial trucks are either equipped with a driver‘s cab or driver‘s seat and are fitted with an alternating current drive. Thanks to their compact design, the industrial trucks are particularly suitable in tight rack aisles. 01 Type ESI 1600 electric platform stacker loading a pallet at the conveyor system f+h Intralogistics 1/2015 23


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