www.hpmag.co.uk HYDRAULICS & PNEUMATICS July/August 2024 21 VHS Hydraulic Components Ltd, a supplier of a wide range of hydraulic components, has recently developed an advanced integrated system tailored for the construction sector. The company has successfully combined a Bosch Rexroth M415/M4-12 Combo Valve with a customised Scanreco Radio Remote Control System. This system is designed for a piling mast conversion, intended to be used as an attachment on a 30-ton excavator. The Bosch Rexroth M4 Valve features a configuration of 2 x M4-15 and 7 x M4-12 working sections, operating with a fixed inlet flow of 300L/min at 300 BAR. Each section of the valve is equipped with electro-hydraulic proportional solenoids and LS A&B relief valves. Notably, a proportional LS relief valve is installed on the second working section, enabling the remote adjustment of working pressure during operation. This valve has been paired with a customised Scanreco RC400 G2B Radio Remote Control System, featuring a Maxi handset and bespoke programming. This combination allows the operator precise and safe control of the piling mast from a distance. Rob Turner, Managing Director of VHS Hydraulic Components, commented: "The Bosch Rexroth M4-15/12 combo unit and Scanreco RC400 G2B showcase a strong synergy between two leading global brands that we are proud to represent in the UK." VHS Hydraulic Components serves a diverse range of industries, including agriculture, construction, engineering, farming, materials handling, marine, plastics, recycling, and steel. For further information please visit: https://www.hydraulic-components.net Enerpac cylinders and a Larzep split flow pump are playing a crucial structural role in the refurbishment of the Mülheim Suspension Bridge over the River Rhine in Cologne, Germany. During the replacement of the original steel centre frame, road, and tram track foundations, these hydraulic cylinders are being used within a temporary steel frame to prevent the two halves of the bridge from collapsing inward, which could otherwise lead to structural failure. Opened in 1951, the Mülheim Bridge has a main span of 315 metres and a total length of 683 metres. The bridge features pedestrian walkways on either side, as well as a central section comprising a two-lane highway, a two-lane tram track, and another two-lane highway. The extensive wear on the bridge has necessitated a complete overhaul of both the bridge and its approach roads. The refurbishment is being managed by SEH Eiffage, a leading German engineering and construction firm. The project is organised into five phases, with sections of the public walkways, road, and tram tracks being replaced. Phase 2, which is divided into three parts, involves replacing most of the bridge deck, including the central tram tracks and their foundations. Maintaining the stability of the bridge structure is essential throughout the refurbishment, especially during Phase 2. To prevent the bridge deck from collapsing after the removal of the road and tram track foundations, SEH Eiffage has developed a 20-metre-long temporary steel frame. This frame is progressively moved along the bridge deck as the foundations are removed and replaced. To provide the necessary hydraulic force to keep the bridge apart, SEH Eiffage has chosen 48 Enerpac 100-ton locknut cylinders, each with a stroke of 150 mm. These cylinders are centrally controlled using a Larzep split flow pump and are operated in groups via a central distribution block. By Advanced integrated hydraulic system developed for the construction industry Hydraulic cylinders and split flow pump solution measuring the forces on the steel frame, SEH Eiffage can adjust the pump’s strokes to ensure the stability of the bridge deck. Phase 2 of the Mülheim Bridge refurbishment is scheduled for completion in November 2024. Enerpac 100-ton locknut cylinders The Enerpac 100t high pressure lock nut hydraulic cylinders are designed for mechanical load holding over extended periods. These cylinders are single-acting with a high-strength return spring, allowing for rapid retraction. This feature enables quicker release and repositioning of the steel frame compared to conventional cylinders. For further information please visit: www.enerpac.com Mülheim Bridge showing Red support structure, Enerpac cylinder and new tram way. Uniflex’s HM 465 is a versatile crimper for extra-large fittings. It is the successor of the company’s HM 450 and HM 480 and boasts a force capacity of 4000 kN / 400 t and a 380 mm opening, making it suitable for processing heavy or extra-large fittings and high-pressure hoses with a single machine. It features a master die length of 150 mm and an opening travel of +150 mm, enabling it to handle 8" ANSI flanges and up to 12" industrial pipe fittings without the need to change crimp dies. Designed for high-pressure applications, the HM 465 offers exceptional crimping force and precision, meeting rigorous standards for processing high-pressure hose fittings and insulators. The unit is notably compact and energy-efficient, operating at just 5.5 kW, and incorporates a Hilo hydraulic system that allows for space-saving integration into the machine. Versatile crimper for extra-large fittings The crimper’s design includes the ability to press from both sides and a fixed 6 o'clock die position, enhancing ergonomic operation. Its clean slide bearing technology and robust construction contribute to its reputation as a valuable investment in the market. For optimal performance and functionality, the HM 465 is equipped with the latest IPC technology, ensuring users benefit from its advanced capabilities. For further information please visit: https://www.uniflex-hydraulics.com/en
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