MOBILE MACHINERY O+P Fluidtechnik 2024/11-12 www.oup-fluidtechnik.de HYDRAULIC LINE SYSTEMS As more and more towns and cities are moving to keep high-polluting cars and vehicles out of town and city centres, refuse collection vehicles still have to operate right in the heart of residential areas and town and city centres. The vehicle industry is therefore right at the heart of the public debate about traffic in towns and cities and residential areas: The refuse collection vehicles should be low-emission or if possible emission-free and be able to navigate safely through car, bicycle and pedestrian traffic in partially confined road conditions. In addition, they should be low-noise whilst en route in order to protect residents and in no way endanger the environment through escaping oil or even vehicle fires. Implementing this catalogue of requirements is an enormous challenge in light of vehicle dimensions alone: A standard rear loader refuse collection vehicle has a structure that weighs about seven tonnes and can hold eleven tonnes of waste. Around 40 metres of hydraulic tubes, 60 metres of hose lines and 100 metres of electric cables need to be compactly routed, connected leak-free and securely fastened in a vehicle. Manufacturers need to pay a lot of attention to the hydraulic line system, while the trend in mechanical engineering is to concentrate on one‘s own core competencies and hand over responsibility for non-specialist areas to companies with the appropriate expertise. Stauff, the manufacturer of all the hydraulic line system components developed and produced in-house, offers a concept for this: The „Stauff Line“ product line includes the complete range of line, connecting and fastening components including bent tubes, and looks after customers from the initial idea to the implementation of hydraulic line systems. This includes delivery models tailored to the manufacturer‘s complex processes. Assemblies have also proved useful as they reduce the workload and complexity on site, but also increase safety. After all, most leaks come from installation errors. In line with the international Stauff Group‘s slogan „Connect with Stauff“, the company focuses strongly on engineering expertise and expressly invites OEM designers and project managers to work even more closely with them. Several well-known international manufacturers of refuse collection vehicles already appreciate collaborating with Stauff Engineering at its headquarters in Werdohl (Germany), especially as delivery and support is guaranteed by the Stauff Group‘s international branches. TUBE CONNECTION SYSTEM FOR GUARANTEED LEAK-FREE OPERATION The most important hydraulically driven functions of a refuse collection vehicle include the side or rear lifters, which are used to lift and tilt refuse bins or containers, as well as the refuse presses inside the collection container. This is where the Stauff 02 The Form EVO tube connection system withstands strong vibrations and permanent pressure shocks 03 The two-part elastomer insert of the NRC clamp dampens vibrations and absorbs noise 04 MLC clamps can hold up to six lines with identical or different diameters and are suitable for use with tubes, hoses or cables „PAY PER USE“ FOR FORMING SYSTEMS Stauff recommends using its Stauff Form Evo forming system to connect tubes exposed to strong vibrations, as is the case in many mobile applications. The forming machine is the core of this particularly robust tube connection. Several usage models are provided for OEMs with initially low or hard-to-calculate order volumes: They have the option of paying a fee per forming operation (Pay Per Use) or a one-off flat-rate weekly rent. 02 03 04
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