Is this Legal

No, that still wouldn’t be legal because you would only have one attachment point on the machine.
You can secure one end of that machine with one chain and two binders, if you route everything correctly and have enough chain length.
Here’s how that would work. Hook one end of the chain to the machine, take the free end through the d ring. Hook a binder on the chain after the d ring up to the chain going to the machine. That secures one side.
Take the free end through your other d ring and hook the other chain hook to the machine, put another binder on that side.
Each side must stay tight independent of the other, to be a legal tie down.

 

Illustration.
The front needs to be secured the same way.

 

I was thinking the exact same... with current setup the machine would be completely free if any single link broke.

 

Your current single binder setup across the middle (the red X spot) definitely won’t cut it for 11,000 lbs. That’s way too little tension and not a safe way to secure heavy equipment.

The way you’re suggesting with two binders (green marks on the sides) looks much better because it creates a balanced, crisscross tension to keep the equipment from moving forward or backward.

Just make sure:

• Both chains are rated properly for the weight (11,000 lbs or more each)
• You use the right grade chains (typically Grade 70 or better for load securement)
• The chains are tight and the binders are properly locked down
• The chains anchor solidly to the trailer points

With two binders on opposite sides like that, you get more even pressure and reduce the risk of the equipment shifting. So yeah, your plan is legit and safer than one binder in the center.

 

Putting two binders on a chain arrangement as shown in the opening post does absolutely nothing in terms of increased securement, because there is still only one attachment point at the machine.

 

I see what OP’s problem is… he can’t use the securement points on the outside of the tracks because of the side rails of the trailer.
@Oldman83, can you draw a picture with 2 hooks at the center like he has, and the binders where you have them?
Or with a big clevis in the middle to use 2 points…
Or like OP has it on either end and a ratchet strap over the tracks treads.

 

The problem is that the same securement point, does not count toward the 4 point securement. It has to be a separate section, since if that single point gives way, both chained binders are no longer functional.

The trailer looks like it has room between at least the left side of the trailer and the track, plenty, the right side looks a little tight, but I think he should still be able to fish a chain over the drive frame area and be able to hook the chain to that and then draw it to the opposite side of the trailer to the D -Ring for securement, and the same with the other side and the front side pair. @Oldman83 's first drawing should be the model you use, but with the chains going to the opposite sides. That would be the only legal way....but of course, that doesn't stop anyone from doing what they want anyway.

 

You brought up some good points.
Particularly the one about both chains being hooked to the same eyelet on the machine.