Liebherr Planetary Gearboxes for CSD Spartacus

first_imgImage source: LiebherrIn close cooperation with Royal IHC, Liebherr has designed special planetary plug-in gearboxes for rope winches to be installed on the Spartacus – the world’s largest and most powerful cutter suction dredger (CSD).For the Spartacus, Liebherr and IHC developed an anchor winch with two high-torque plug-in gears (up to 1,500,000 Nm) and equipped these with axial play, in order to guard against any possible tensions in the steel structure. The multiple tooth mesh of the planetary gear stages provides the gears’ very high power density.The drum bearings in the transmission are designed specifically for use in winches to comply with high service life and maintenance-friendly operation requirements. Salt water-resistant paints and the particularly robust and compact design make them ideal for deployment on the high seas, and ensure the long life of the components, according to Liebherr.Liebherr also conducted a detailed heat calculation and supported IHC in choosing a suitable cooling option.“For the Spartacus project, we chose Liebherr planetary gearboxes, because of the good experiences we already had with them,” said JaapJan de Koster, Lead Engineer at IHC. “For a number of these winch drives, secondary controlled hydraulic motors were applied, which place high demands on the rest of the drive, such as an increased mass inertia. For this requirement Liebherr has applied their extensive knowledge of drive technology and provided us with a very solid and integrated solution. Their technical support on this project helped a lot and we had our minds free to focus on other technical challenges for this very special vessel.”The Spartacus incorporates 12 different gears with torque ranging from 165,000 to 1,500,000 Nm in use. The overall high performance of the Spartacus will enable it to cut through even the harder sediments at high speeds. This was only a dream of the future, now cutting instead of blasting is a reality.The maritime division of Liebherr also contributed to this major project, and supplied IHC with its largest CBW-F 3450 ship crane, which was specifically developed for the Spartacus in March of this year.last_img read more


Real Madrid confirm Solari as coach until June 2021

first_imgMadrid: Real Madrid confirmed Santiago Solari as their new permanent first team coach until the end of June 2021 following a successful fortnight in charge since replacing the sacked Julen Lopetegui on October 29.The 42-year-old Solari was promoted from the Real Madrid B-team (Real Madrid Castilla) on an interim basis and his four games in charge have led to four wins with 15 goals in favour and just two against, which is the best start any Real Madrid coach has ever enjoyed in the club’s 116 year history, reports Xinhua news agency.Spanish rules state a coach can only be in charge of a club on an interim basis for two weeks, so this Monday Real Madrid President Florentino Perez had to decide whether to confirm the Argentinean as coach on a permanent basis or to return him to Castilla. It had been reported in the Spanish press that Solari would be offered a deal until the end of June 2020, but finally the club has given him a contract for two and a half years as a sign of their confidence in him.A former Real Madrid player, Solari scored 10 goals in 131 league appearances for the club between 2000 and 2005 and after hanging up his boots, he returned to work in the Real Madrid youth system in 2013, being made Castilla coach in 2016.His numbers in just over two seasons with Castilla are decent but not spectacular, with 32 wins from 86 matches in charge with a team with the biggest budget in their league.There was even speculation he could be replaced last season as the side failed to make the playoffs from the Segunda B (third tier of the Spanish game) to the second division (Liga 123), but he retained his position for the current season and the team was just outside of the playoffs when he was called on to replace Lopetegui.A very amiable person, Solari is seen as a man who will be able to repeat the good relationship Zinedine Zidane enjoyed with the heavyweights in the Madrid dressing room, while also promoting young players he has worked with in Castilla.His next game in charge will be the always difficult trip to face Eibar on November 24. (IANS) Also Read: Sports Newslast_img read more