28 konstruktionspraxis – Vehicle Design | 2024| Special Ships, Rail & Commercial Vehicles meets all applicable legal requirements while going beyond the previous market standards. Coloured marking rings are available as an optional feature for the tube couplings. Each of the two couplings halves has a groove into which the coloured rings can be inserted. These allow installation and operating personnel to directly identify which mobile half has to be joined to which fixed half. The company is continuously enhancing the QRC-RH range with a view to high-end applications such as the SPMTs, but also for drilling rigs and other complex areas of application. The tube couplings resist the extreme pressure loads in the SPMT even when decoupled. The tube couplings use the principle of screw-to-connect couplings that seal on both sides and have flat-face valve tappets. Source: Stauff Source: Stauff Each component counts What is true for any hydraulic system is particularly crucial when it comes to SPMTs: Leaks and breakdowns cause high costs and, in the worst case, can delay the carefully planned project schedule, for example when roads need to be closed for transporting wind turbines from the factory to the installation site. Hydraulic line systems have to be designed and manufactured with the appropriate level of safety, robustness and ease of service. With Stauff Line, the globally active company with headquarters in Werdohl offers a range of components for hydraulic lines: clamps, tube and hose connectors, hose ends, flanges, quick release couplings, valves, test couplings and other test accessories for inspection and maintenance as well as customised products, from prototypes to large production runs. All steel components are protected against corrosion with the zinc/nickel coating mentioned above. This product portfolio is developed and manufactured in house and all parameters are coordinated. This offers technical advantages, while procuring everything from a single source facilitates logistics at the OEMs’ production and installation sites. On request, Stauff Line includes consulting from Stauff Engineering already during the development phase of the hydraulic line systems. The manufacturer recommends this cooperation as mobile and stationary machines and systems are being designed in ever greater detail for very specific applications. The requirements governing the hydraulics and hydraulic line system are correspondingly diverse. Stauff takes on the responsibility from design to implementation with its own products. (dm) Construction without traffic jams A special example of the success of the Stauff Line range and of the collaboration already during the concept phase is the mobile bridge built for the Swiss Federal Roads Office (ASTRA), the “Astra bridge”: It makes it possible to guide traffic above roadworks rather than around them. While traffic flows over the bridge at 60 km/h, road construction can be carried out underneath the bridge on a 100 metre long section. Once the work has been completed, the bridge is hydraulically lifted by ten centimetres and moved 100 metres to the next work section via remote control. The bridge is 257 metres long, 7.57 metres wide and 4.65 metres high. Cometto, the Italian manufacturer of SPMTs, developed the entire hydraulic line system with Stauff Engineering and procured all components from the supplier’s portfolio. INFORMATION
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