Crane lifting dozer and capsizing

[PhilDirt]

I haven't seen this before, my apologies in advance if it's a repost.

You might need a Facebook account to see it, Not sure how that works


http://www.facebook.com/photo.php?v=540156826015666&set=vb.147181238626097&type=2&theater

 

[digger242j]

I'm not on Facebook, and it worked for me.

Ouch.

I had to watch it multiple times, but you can see the crane operator jump clear at about 0:59 .

 

[grandpa]

Ya,,, when he jumped out he slipped on something..... I know what he slipped on..... lordy lordy.

 

[Tiny]

You can see the guy on the ground walking back and forth , Wonder if he was seeing it getting light ??

 

[brianbulldozer]

I'm not a crane guy, so don't know what I am talking about, but as it goes over and you see the back of the crane doesn't it look like they don't have any counterweight on it? Also, the electric wire looks pretty mad as it's dancing around on the ground at the end.

 

[Silveroddo]

Not sure what it is for a crane but it looks pretty small, some kind of overseas 40 ton boom truck?

 

[Blmreject]

What i don't get is why he was lining down so slow. If you know you're way out of chart, get after it! Get that thing over the edge and line down for all your worth. He held that thing there for ever, he could have had two feet off the ground by the time he started going over then it wouldn't have mattered.

I don't condone running crane that way, but every crane hand has a few stories to tell. Also why in the heck would go over chart heading away from you, especially heading down a hole. you are powerless in that situation. Always give yourself an out.

 

[Scrub Puller]

Yair . . . Blmreject Why did it go? Did he boom down and increase the radius a smidgeon? . . . it was obviously marginal but he had it to begin with, maybe it was bounce induced by lining down so slow?

Cheers.

 

[digger242j]

Yair . . . Blmreject Why did it go? Did he boom down and increase the radius a smidgeon? . . . it was obviously marginal but he had it to begin with, maybe it was bounce induced by lining down so slow?

Cheers.

Like I said above, I watched it multiple times trying to figure it out, and I think you hit the nail on the head.

The only other thing I could think of is that the dozer was touching the wall, and that caused a little bounce, but for all the times I watched it, I can't see it.

 

[cecil89]

Learning physics the hard way. Edit: Or ignoring physics the hard way

 

[heavylift]

Maybe that's the boss on the crane, because he kicked the operator off it because he refused to lift the dozer.

Let's go bare rent a crane, it's a 20 ton dozer, we can rent the cheapest crane, a 22 ton crane, that give us an extra 2 tons.

 

[Tiny]

I,m wondering how loud the load monitor was or if that was done with the bypass on .

Its tough to tell by vid quality but the ground guy looks to be watching the front outrigger beam then walks to the cab to say something maybe .That was the old school way of telling your about to get in trouble . Watch beam the if a gap appears between the beam and the housing you went and told the operator .

Just my opinion , if he was in a spot that a small bounce turned him over , He was way out of any chart that machine had .

 

[digger242j]

Most of my crane experience was on an old fixed-cab Pettibone, with outriggers more like you'd find on a backhoe. There was plenty of slop in the connection between the outriggers and their pads, and yes, you'd see movement between them if you were getting too far out...

 

[Silveroddo]

I,m wondering how loud the load monitor was or if that was done with the bypass on .

Its tough to tell by vid quality but the ground guy looks to be watching the front outrigger beam then walks to the cab to say something maybe .That was the old school way of telling your about to get in trouble . Watch beam the if a gap appears between the beam and the housing you went and told the operator .

Just my opinion , if he was in a spot that a small bounce turned him over , He was way out of any chart that machine had .

lol, not so old school, Its still common practice in North Dakota. Nothing like having an operator tell you to go watch an outrigger and tell him if he's getting lite while their lifting a million dollar piece of equipment.
I'd say that guy has a promising future out there in the oil fields

 

[Hardline]

My guess is at :52 he boomed down slightly. That put him just over the edge. You can see the dozer move backward slightly instead of straight down. With the machine at that angle in the video I think booming down would cause the dozer to move in that direction. Good decision on the operator to bail out. Would have been several hard hits on that ride and landing cab down might have thrown him out and crushed him.

 

[catkicker]

I think that operator had one foot out the door when he started that lift

 

[Steve Frazier]

Here's the YouTube link in case Facebook goes south: https://www.youtube.com/watch?v=G2LX_YpjkdA

 

[Jim D]

I think that operator had one foot out the door when he started that lift

That's what I thought. As quick as he was jumping out of the cab, it made me think that he had done it before...

 

[Blmreject]

Dime for a dollar, he picked over an out rigger. had it out where it started getting light, then swung square over the back. Alot of guys don't realize you can pick a whole lot more when you are in line with an out Rigger because your tipping axis is farther from your center pin.

Think of a square with a dot in the center. It's further to a corner than it is to a side. That actively gives you more out rigger spread, and there for a better chart. They would never put that in the load chart of course. Hell they don't want you to know because guys would get them selfs into trouble. However not knowing is what this guy in trouble.

When you roll the dice, you better stack the deck.

 

[bigshow]

I watched the video a few times and it looked like he was straight over the rear and never swung an inch. If you watch the trees in relation to the boom, you can see he boomed down slightly at the beginning and that was it, then proceeded to hoist down once clear of the wall. He was definitely out of chart and probably cut his throat by adding the weight of the cable as he hoisted down, 1-2 lbs. per foot adds up quick on what looks like an 8 part set-up.