So not knowing anything about the inner workings of a crane, do they have a similar turntable to an excavator or a different style turntable that would make that crane flip off of the carrier frame??
Its just a big bearing in the truck cranes and the newer crawlers, bolted to the welded frame.
Tugger's conventionals are a little different, on the older ones they just have big rollers riding on a large metal ring.
Here's hook rollers:
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Here's truck crane bearing:
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That brings back memories of an exchange my brother had with one of the "engineers" of the then new plant I ended up working at for 40+ years. My brother started working there during the summer after he graduated from high school two years before me. Brother was complaining about the way there was so much stone spilling off the conveyors. This "engineer" when he heard this kid complaining asked he what was his problem? Brother told him he was tired of cleaning up all the spillage. "Engineer" said but this is a spillage free plant! Brother then said why am I spending most of my day shoveling up spillage? To which the "engineer" replied as only an "engineer" could, "But it worked on Paper!"I see that like most quarries they are absolutely on top of cleaning up their conveyor spillage - not..!!
When the crane rips off the base/ undercarriage like that, its usually a safe bet that its been repeatedly overloaded, and/ or repeatedly shock loaded. Of the pictures I've seen of one's that have broken off, it seems its more likely to tear the welds out, than break the bolts out. But either one can occur.
Could never understand why some of the tail pullies on the secondary plant which were above ground when I stated there were now three feet below grade level by the time I retired! And the entrance to the main electrical control building which used to be at least one step up at the entrance was last I knew one step down! I mean it's not like there weren't a handful of front end loaders and a couple skid steer loaders available to keep the place cleaned up! And the whole plant was built right on bedrock so there wasn't a problem of digging too deep while scraping the floor!
Yeah, that's a rolling a rock up a mountain kind of job, never gets done.I see that like most quarries they are absolutely on top of cleaning up their conveyor spillage
Driver said he could jack up either neck to get over a low spot. I don't think anywhere in the middle of the trailer was over 3" off the ground loaded when we left. Hope he's headed for kansas, nebraska, s. dakota, oklahoma- flat country.
The riposte to that is that it's like shovelling sh1t uphill. It's a tough job but someobody's got to do it......Yeah, that's a rolling a rock up a mountain kind of job, never gets done.
For those who haven't seen pictures before, here's kshansen's old work site when he got started:
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Be afraid, be very afraid! He's coming right for you!A strange creature has seemed to adopted me today while at work. Found him by the dumpster. Send help.