Plain sailing from J D Neuhaus
April 1st 2005 J D Neuhaus says the application diversity of its monorail hoists is highlighted by a special version of its EH 50 model which it recently delivered to a US marine shipyard for the handling and manipulation of ship segments.
With handling safety of paramount importance, the specified hoist had to be able to handle 60 tons – even though the nominal load would only be 46 tons.
The EH 50 unit (with a nominal capacity of 50 tons) proved to be the solution as it had 25% overload rating, effectively increasing this to 62.5 tons.
With two driving mechanisms instead of four, the EH 50 hoists are compact enough to operate in areas where heavy loads have to be lifted in confined spaces. Because compressed air is the driving medium, the hoists can also be used in hazardous areas where there is potential of explosion. Units can also be delivered with additional protection against sparking.
At the US shipyard, the EH 50 hoist travels on a long Isection beam with Asupports.
Among the project’s special features was a ‘Rams’ hook with shackle bore mounted at the end of the hoist. Another specific customer requirement was to have the travelling motors of the EH 50 offer a free running mechanism when lifting the load, as many of the ship segments are not sufficiently balanced. J D Neuhaus’ solution allow he operator to open the brakes of the driving motors once the hoist is parked over the segment load. Once lifting commences, the EH 50 will move itself above the centre of gravity to allow a safe lifting operation. More articles from J.D.Neuhaus Limited: | 
