Something with wheels, an axle, or the wheels can be bolted to something.

[Gravydoo II]

I got this bigass thing I cant move cause its so damn heavy and awkward. So, I want to put it on a frame and some wheels. Casters will not work. They need to be like a hand truck with an axle or individual wheels that can be bolted to the sides of the legs/cart frame.

Needs to be able to hold up around 200lbs.

So far I have thought of these things:
Push mower (cause they got them back tires that raise and lower with the little bars)
Box dolly.
generator frame

what else comes to mind?

[BiG SiP]

https://i.imgur.com/hplupc9.jpg

[HalflingSpergand]

There are heavy duty wheels and casters at harbor freight if you can cut and weld a steel tube frame. They might be expensive maybe mod a hand cart by laying out down and welding on some beefy steer wheels ( hd casters )

[Gravydoo II]

Sick, thank you.
https://www.harborfreight.com/8-inch-pneumatic-rigid-caster-42714.html

[Jibartik]

Some city in Oregon once used explosives to move a whale, maybe that will work for you OP

[DoodyLich666]

Yeah, I think your best bet is to weld a little frame and stick some beefy wheels on it. If you can’t do that I think some of the bigger hand dollys could probably help you lug around 200lbs.

[Thulian]

https://www.toyotaforklift.com/lifts/jacks-walkies-stackers/electric-walkie-pallet-jack

i got mine last week i love this thing, but you are probably too poor to afford it

there is always manual pallet jacks

[Gravydoo II]

https://www.toyotaforklift.com/lifts/jacks-walkies-stackers/electric-walkie-pallet-jack

i got mine last week i love this thing, but you are probably too poor to afford it

there is always manual pallet jacks

Can that thing even move in the grass or on anything other than concrete??

[magnetaress]

Some city in Oregon once used explosives to move a whale, maybe that will work for you OP

Rocket propulsion is the future 🚀🚀👩*🚀👨*🚀🚀

[Gravydoo II]

I'm going to need some sort of rocket sponsor...
and a shed sponsor.. cause its going to burn down every time i move it.

[FKemp]

I think welding a frame out of steel tubing and attaching wheels to it is the best strategy here if you have the skills. Will also save you quite a lot of money.