Both of these railway cranes have something that is seldom if ever seen on cranes in the United States and Canada. That feature is the extensible counter weight supports. The ability to add counter weight and then shift that weight away from the center point of rotation, of the rotating superstructure allows much more lifting capacity at longer boom lengths. The above mentioned advantages do come with dis-advantages. As seen here both cranes have a totally open area in which to operate, but when there are obstructions present that would no tallow the generous rear end swing radius as seen here, then both the boom and counter weight length would have to be reduced, which would also reduce lifting capacity. I would suspect that the KIROW KRC 1200 machine may not be working at it's maximum capacity because in a dual lift both machines share the load and if the larger capacity machine were to lift more of the load than the lower capacity machine, the load would go out of balance causing the smaller crane to fail or over turn. In dual lifts like this both crane operators take verbal or visual signals from one signal man, that person is responsible for the lift.
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| Posted by Roy S. on January 17, 2013 | |
What is the story here? Why are they lifting this, and where are they going to put it? I don't see anywhere TO put it, there's not enough room on the rails between the cranes.
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@ Roy: For sure it was enough room to put the locomotive on the middle track between the cranes. Afterwards the locomotive was towed into the depot.
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