I know nothing, Wondering why it says maximum boom is 190'.. 1951 steel barge with a fixed lattice boom electric crane. The crane has a 40-ton lifting capacity with a maximum boom length of 190 feet and is controlled by an air system. The crane is non-operational , and boom cables will require replacement. Two winches are included, but their capacity is unknown. The dragline bucket has an estimated capacity of 15 cubic yards. I'm guessing it's a barge stability issue ? Or a government thing, making limitations for stupid government people ? Couldn't you make it more than 190' by reducing the gross weight ? https://gsaauctions.gov/auctions/preview/315800
Correct. There won't be any changing that.
It looks to me like the boom is a 1-piece fabricated section, a bit like what would be fitted to a walking dragline. See the photo on this link, all-welded - https://www.mvm.usace.army.mil/Locations/Ensley-Engineer-Yard/ Those booms are not designed to be shortened or lengthened without major surgery. It's not like you can go an simply pin another section somewhere in the centre. They could just as easily have described it as a "190-foot boom", period.
Thats exactly what they should have done
It would require a full engineering study to increase the boom length on that dragline. Read that as "no engineer is going to want that liability, without gov't sized checks headed his way". Floating on the barge, dredging channel, you don't need any longer stick, just float closer. There's more than two winches in the old girl. Its likely a tandem set up, just to raise the boom, then you've got a double set to raise the dredging bucked and pull it back in. It's got to have a heck of a genset in it, to generate the electric power it needs. The 40 ton limit, is likely just what they rated it for, for a full dragline bucket. Up close it would pick a lot more. Given its age, and who knows the last time it was ran and inspected, it could take anywhere from thousands to millions to get it going again. Not knowing what's been robbed, or is just no longer available, i.e. you're having a machine shop build whatever is broken. It would be fun, and a challenge, just to get it back going, but you better have someone with deep pockets writing checks the whole way. On the one hand, there's not a lot of them around, so it should have value, but who has the job, and the need for it? The gov't may have to pay someone to scrap it.
Too bad there aren't any pictures of the machinery, that would be fun to see. Maybe it would bring more tax dollars back to us with pictures of machinery ?
My eyes tell me that rust on that bucket might only be in the realm of 3-5 years old, 10 at the most. That thing will cost more in labor and machine time to scrap than it's worth.
Maybe it wasn't that long ago it was taken out of service. Some more pics. to show what all is there would help. The drag bucket looks to be in really good condition. Electric draglines are known to run for decades. Typically the life of the mine. Being on a barge would likely reduce the life expectancy though and rust/corrosion is probably a big concern.
All the good stuff like the ships bell, the galley cooking tools are probably long gone. Being over 75 years old, you could dream/hope that its got tons of copper, bronze, or brass ? Then hire some hardworking young people to break it up. Good luck with that....
An interesting looking rig. It looks like a mining dragline mounted on a barge. Capacity wise it would just be dragging material with that big Souerman bucket,they dont ever lift the material with a Souerman. Id bet the 40 ton rating is with the boom out flat like that,enough to carry that big Souerman out there.Im curious how they anchored that rig against the drag force. Looks like 3 spuds on the barge beside it,maybe they winched them selves along side, cant see enough in the pics to tell.That boom would never be a lifter,it appears to have fixed pendants at that angle so it may have been assembled that way. All that said there are lots of similar derrick type rigs in the marine construction business,but they set up as cranes. Some are built up from Clyde or Manitowoc draw works or Dravo ,some are fully electric . If you look at thier ratings they dont seem that great , but a 50 ton rating would be at 100 feet or more.They are a different animal than a conventional crane such as a Manitowoc 46 00 ringer set on a barge. They are full duty cycle,so you can dig lots all day long with them.As lifters they would have the main hook,a couple of whips or auxiliary lines maybe some light lines coming down from halfway up the boom. Heres an example of a Derrick thats typical in marine construction, gives you an idea of the modifiction that would be need to make a rig out of that bank scraper.
Tugger, I don't see any spuds. Is the water too deep, or you have to have a pier ?
Those arent my rigs,just some example pictures. I know the ringer has no spuds ,just anchor winches.Not sure about the derrick, sometimes they pull the spuds out and just work on anchors .
The charts on the old derricks are surprising. The Palouse was only 140 tons, but it would do a bunch a ways out. This was 43 tons at 65' out. It's BE 30B with the 35000 of counterweight off, but the boom in. Started out at 110,000-ish.