Be sure to double check your dunnage

[ QUOTE ]
Are those locks there at the mid-extend too? I think they are there to ensure that you can only extend the outriggers to Full span, Mid span and Fully retracted because at those spots there is internal webbing to strengthen the outrigger.

But I suppose it would prevent them from retracting on there own.

[/ QUOTE ]

Yeah, same deal at the mid extend points, for the reasons you stated. I also never really thought of them as a safety to keep the things from sucking in in case of some other failure, but the pins are pretty beefy and would seem to perform that function.
 
Do you guys think that tipped crane will be repaired used again? Obviously can't be sure without seeing the damage but just wondering what generally speaking those with crane or equipment experience would think about the prognosis.
 
to all of you, cranes in the 21 century are designed for boom failure before tip over. remember that, wright it down, call the manufacturer. point blank don't trust an opp. on a new crane that operates by "the seat of the pants" new riggs aren't designed for that they have charts and computers, anti-two-blocks and wireless load cells all giving the exact chart for load. the crane was set up improperly. the riggers read the chart and measured the distance needed for the pick capacity on the chart. then set the crane up found out the out riggers would hit the pipe, their boss was getting pissed at all the fing off and said roll with it and thats what they did literally. could have been avoided by putting the boiler pipe on a tall cribbing stack so the out riggers could have been set up underneath the pipe before the main pick was made. although it would have required two picks and time to set up the cribbing. a better plan would have been to "austin powers" the rigg in so to pick off the back no outrigger clearance issues, a better chart and four solid perches for the outriggers. plywood being the only thing needed so you soften the load on the aluminum pads they will crack with a bolt or rock (although i find a rock hard to believe the bolt i believe). just my $.02 worth
 
Well said Jeff!
Something bigtime, and obvious, had to be wrong to tip that sucker over. As to whether it would be put back in service, depends (regretably)on the lawyers involved, if they fly under the radar, no doubt the owners will put it back to work after a recert, and rightly so.
 
heck he didn't have all the counter weight on thats the weight they trvel with that takes about 60 tons more counter eight to be picking at capacity. a bet the opp thought he was picking something small and i got hung up the pistons didn't snap they are both fully extended they are just buried in the sand. the boom being all the way extended could tip that rigg in that configuration. i bet the opp set the counter weight chart wrong in the computer intentionally or unintentionally its hard to tell. the computer would not have let that thing boom down that far without it being setup wrong: IE wrong comp. settings. i bet leiber is going to send them a bill from hell
 
In picture 2 of BB's post you can see the stick is bent, and in picture 4 of the same post you can see the outriggers are IN.

The comment about the counter weights makes sense! The operator MAY have started the pick w/o the tip being directly over the load too.
 
the pistons on the outriggers not the outriggers themselves td. the stick doesn't look bent to me
 
[ QUOTE ]
to all of you, cranes in the 21 century are designed for boom failure before tip over. remember that, wright it down, call the manufacturer. point blank don't trust an opp. on a new crane that operates by "the seat of the pants" new riggs aren't designed for that they have charts and computers, anti-two-blocks and wireless load cells all giving the exact chart for load.

[/ QUOTE ]


Its true you shouldn't operate by the seat of your pants, but cranes today are not designed for boom failure before tip over. They have a very definite line on the chart which depicts where if you overload it,the boom will fail or it will tip over. its called the structural/stability line.

And if you can't remember all of that make it simple DON'T OVERLOAD IT.
 
[ QUOTE ]
heck he didn't have all the counter weight on thats the weight they trvel with that takes about 60 tons more counter eight to be picking at capacity. a bet the opp thought he was picking something small and i got hung up the pistons didn't snap they are both fully extended they are just buried in the sand.

[/ QUOTE ]

Look at the pictures of where the dunnage is the outriggers were fully out and down when the pick started but (and i can't imagine how) some how they retacted in fully which defintely would have tipped the crane over with that much boom out.
 
If cranes booms failed before they tipped we would be seeing a lot more twisted booms and a lot more rubber side down pictures. Crane booms, especially the hydro formed style like this crane was running, are extremely durable.

That truck crane also lacks the ability to pick up counterweights!



he had outriggers fully extended, like CTM said look where the back pads were.
 
These are crane accidents from 1 website, only involving mobile hydro cranes, since the begining of April 2009.

Not seeing many boom failures!


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I would love to see you add 60 tons of counterweight to a 50 ton crane some time, BB you are right this is a truck crane it is also a huge chinese shitbox look at the tires/ axles ect.... it is an XMCG I hope we never find these in this country. Chinese have also been caught painting these thing similar to more popular models and have been sued by all the major brands. They don't just copy and black market video's they copy (knock off) anything. Check out their website nothing but junk... The booms absolutely bent. Look close at the outrigger beam pistons they blew out backwards and are next to the extended outriggers in the air. Beam locks may have helped like on couriers boomtruck. I would guess the small dunnage started the problem, when she went up the beams went in, game over. As far as bridging that dunnage on the boom truck photo? if you read your manual and sometimes it is imprinted on the pad itself DO NOT BRIDGE because you will break an aluminum pad check it out. Also putting your pad on a sheet of plywood or a alturnamat another mistake. Dunnage should be 3X pad you will punch through plywood easily think about the psi you are applying when you pick over that corner similar to a hammer hitting a nail relatively.
 
When I clicked on the link for the article I scrolled down through all of the photos. I too (like Brent) noticed the boom was totaled. Can the parts be replaced on this crane and put back into service.
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