I may be moving a 200lb appliance without help. I have some 1" width strap ratchets rated at 500lb from home depot (4pack). Could I stand in the bed and ratchet up the dolly backwards? Anyone done something like this and tips? I also have some 1000lb pulleys available.
Having had to manhandle quite a few appliances on my own I would do this. Put the truck tray down. Tip the appliance over until the top just rests on the edge of the tray. Lift the back of the appliance and push forward. Use cardboard under it if you don't want to damage the side. Once it is all in, stand the appliance up. This way you are never deadlifting the appliance, more pushing and rotating it. You can use rachet straps like lifting straps to get better purchase if you want.
I have a local delivery service and use a hand truck and the sides of my tray as ramps to load and unload large furniture on my own. It only takes a second or two to wheel modern fridges and most other items up this way.
For anything requiring a dolly I keep a light, cheapo steel block and tackle in my kit, which were left over from a kid's flying fox, but that's slower. I've used ratchet straps too, but as you're only getting 20 or 30cm of movement before needing to reset with another strap, that's just unprofessionally slow.
Motorcycle-style ratchets don't do well for this. Their levers are short, meaning you don't have much pull, and when the spool gets full of strap you're done until you reset, which means you need to temporarily support the load. I suggest looking for a ditch and some 2x10 lumber, then just wheel it up.
Those straps aren't rated for straight lifting, and I wouldn't recommend that anyway. Ramps are the way to go, and I would combine ramps with those straps, along with some sort of friction modifier such as the appliance's wheels or bars of Ivory soap.
Just expect it to fail worst case at any time, watch what you are doing to assure it doesn't, and move an inch at a time. Slow and steady wins the race.
It's unbelievable what a rigger can move when he loads with his brain and a lot of patience.
- The ratchet straps are good for fixing the appliance securely on the hand truck/flat bed dooly and later on the car.
250 daN straps are IMHO quite flimsy. IIRC the 25 mm straps we use are rated at 400 daN. Don't underestimate the force you have on a strap when properly securing the appliance to the car (or dolly).
If you put, say, a 2.50 m ramp to get up to the car's bed at ≈ 90 cm above ground (pick up), instead of lifting 120 kg, you'll lift 0.9 m / 2.50 m * 120 kg ≈ 45 kg. For a van (trunk sill 55 - 60 cm), you'd have < 30 kg.
Make sure the ramp is safe and cannot shove off the sill, if needed support it halfways.
When loading single-handedly, I'd always pull the hand truck (unless you have a very nice concrete floor, that's anyways easier): if something goes wrong, and the appliance rolls down again, you're on top of it, not beneath.
- A helper may help by pushing, but for a load of only 100 kg the ramp should make that totally unnecessary - leaving the helper free to e.g. put something blocking the pulley against rolling down and to take care of any emergencies.
- Depending on the height of your sill and the of the appliance (height, center of gravity, is the suitable side able to take the load), you may be able to load the appliance "over the sill" (not really sure how to express this in English).
The most important muscle for this type of work is the one between your ears ;-)
I have done somewhat of the opposite of this. When bringing home a large bookcase on top of my SUV I found myself needing to unload it alone. I used a few ratchet straps anchored to my roof rack as safety stops while lowering it so I would not have to hold it's full weight myself and could take frequent breaks.
Were I you, I would lever the appliance upward, tighten a strap to hold it there, and then take a small break and re-set the lever for a higher lift. Once it is halfway up you should be able to tip it into the truck bed.
Alternatively, You could bring a few larger pieces of wood and make a ramp, or use a pully to lift the appliance into a tree and simply park your truck under it and lower it back down.