Share Pics of People Hauling or Towing Something Wrong

[CADplans]

I've always wondered how much use it was to chain down an excavator or other heavy tracked vehicle. Looking at this trailer rollover, I guess that I have my answer. (It helps)

Flipped trailer in Castine causes road closure

(No report of the condition of the drivers shorts.)

That happens EVERY TIME the excavator is chained at a 45 degree angle,,

I have had to tell several drivers,, DO NOT chain the machine at an angle greater than 30 degrees!!














:laughing: :thumbsup:

 

[4570Man]

That happens EVERY TIME the excavator is chained at a 45 degree angle,,

I have had to tell several drivers,, DO NOT chain the machine at an angle greater than 30 degrees!!














:laughing:

It looks to me like the back chains have broken free. How would 45 degrees or less make an difference? And that wasn’t a half bad job. It stayed mostly together in a rollover crash. The chains should be as close as possible to 45 degrees to best resist forward/backwards and sideways movement. I see people putting chains on close to 90 degrees which offers little means of support for forward movement. It would be better to increase the chains to more than 45 degrees vs less. I’ve been guilty of hooking chains straight off the back at 180 degrees or close to it which is the strongest way to resist a forward crash. Realistically if someone is actually using chains of adequate capacity most any hooking will be fine.

 

[Jstpssng]

that wasn't a half bad job. It stayed mostly together in a rollover crash.

That's what I thought also, which was why I posted the link. Until now I always thought that chains might keep a heavy tracked machine from sliding, but would never hold in an accident.

 

[Peter 315]

Looks like a pintle hook trailer .. The hook on my dump truck will spin round and round . Bet he was going way to fast once it starts leaning there is nothing to stop it..

 

[Norm W]

I always wondered why the chains, that are strong enough to hold the weight of a very heavy piece of equipment, can't hold a trailer in place in a rollover? I know the trailers are not as heavy as the load.

 

[Loaderman22]

I guess I'm just confused. I thought you were supposed to chain at 45 degrees, a diagonal chain path gives the best compromise between forward and lateral support, besides being required by law. I guess it depends on the weight of what's being hauled also. I only haul less than 10k lbs so the rules are different. I heard you are supposed to crisscross the chains on anything heavier, but I also heard the chains aren't allowed to touch each other when tight. But if your machine and trailer are symmetrical, and you use the same mount points on each side, then it would seem that the chains would have to touch as both sides would be equal.

 

[4570Man]

I guess I'm just confused. I thought you were supposed to chain at 45 degrees, a diagonal chain path gives the best compromise between forward and lateral support, besides being required by law. I guess it depends on the weight of what's being hauled also. I only haul less than 10k lbs so the rules are different. I heard you are supposed to crisscross the chains on anything heavier, but I also heard the chains aren't allowed to touch each other when tight. But if your machine and trailer are symmetrical, and you use the same mount points on each side, then it would seem that the chains would have to touch as both sides would be equal.

You’re supposed to use 4 chains vs 2 on machines over 10k but there’s no such law that I’m aware of on crossing the tie down chains.

 

[Industrial Toys]

That sucks.

I guess it matters what the deck was made of. Some guys find out the hard way how slippery, steel on steel is. You see videos of equipment attempting to drive on or off some trailers, just sliding off sideways!

 

[duramaxsky]

Looks like a pintle hook trailer .. The hook on my dump truck will spin round and round . Bet he was going way to fast once it starts leaning there is nothing to stop it..

Look at the landing gear. It's a semi trailer.

 

[Redlands Okie]

I always wondered why the chains, that are strong enough to hold the weight of a very heavy piece of equipment, can't hold a trailer in place in a rollover? I know the trailers are not as heavy as the load.

Chains holding a load are usually tight to start with. Under stress they do not get jerked on so to speak. Safety chains holding a trailor to a truck have slack in them so as to allow turning. During a accident the amount of force on the chains when they get jerked on and the slack is gone is incredible.