imagineero
Addicted to ArboristSite
This is the setup I have on my chip truck;
The 'rotating assembly' is two pieces of XXS pipe, or might even be sched 160 from memory. I only got these because they were the two sections that fit with the least gap, very smooth tight fit. If you can get a lighter section that 'nests' then that would be plenty strong enough. The centre section rotates while the outer is made of two sleeves, a lower and an upper which are both welded to the truck. The sleeve is in two parts so that the brace can be welded to the centre section. I also welded a small piece of sleeve to the centre to act as a pivot. This way the centre isn't pivoting on the floor of the truck. I keep it a couple of inches off the floor so it doesnt end up sitting in chip all the time.
The beam is just made form RHS. The whole thing sits up about 6 foot off the floor of the truck, so nearly 10 feet off the ground. I had to put a beam across the top of the chip box, and some gussets to take the side load. It doesnt flex at all. Last year I used it for moving a few heavy things, I had a 3T (all measurements are in metric tonnes being 2200lbs) chain block hung off it. Biggest load I picked up was a lathe for a friend, weighed in at 800kg (1720lbs) according to the plate on it. Picked it up easily. I think it could pretty easily handle a couple thousand lbs. The arm cost me about $30 in steel from a scrap yard to make. As you'll notice I'm not really a painter ;-)
At christmas I bought a 4,000lb electric winch with a dyneema rope. Comes with an electric remote control etc, cost $140 from ebay. I'm expecting it will pickup nowhere near 4,000lbs maxed out, even with the rope doubled. Maybe 1,500lbs with the rope doubled.
If you build a 'tilting arm' type crane like the one in the OP, it's nothing to pickup a used ram and a valve, especially if you have a hydraulic PTO on your truck. Most expensive part will be the hose. If you dont have hydraulics then you can add an extra power steering pump to your engine for very little $ if you are handy. You'll need a tank for the fluid.
I'm still thinking to put hydraulic on mine. I have a big hydraulic PTO for the tipper already on the truck and a big tank as well, but I want a rope not a tilting arm so I need a hydraulic stator and drum, or the guts of a hydraulic winch. Neither are cheap or common. Hydraulic is approximately 9million times better than electric.
Shaun
The 'rotating assembly' is two pieces of XXS pipe, or might even be sched 160 from memory. I only got these because they were the two sections that fit with the least gap, very smooth tight fit. If you can get a lighter section that 'nests' then that would be plenty strong enough. The centre section rotates while the outer is made of two sleeves, a lower and an upper which are both welded to the truck. The sleeve is in two parts so that the brace can be welded to the centre section. I also welded a small piece of sleeve to the centre to act as a pivot. This way the centre isn't pivoting on the floor of the truck. I keep it a couple of inches off the floor so it doesnt end up sitting in chip all the time.
The beam is just made form RHS. The whole thing sits up about 6 foot off the floor of the truck, so nearly 10 feet off the ground. I had to put a beam across the top of the chip box, and some gussets to take the side load. It doesnt flex at all. Last year I used it for moving a few heavy things, I had a 3T (all measurements are in metric tonnes being 2200lbs) chain block hung off it. Biggest load I picked up was a lathe for a friend, weighed in at 800kg (1720lbs) according to the plate on it. Picked it up easily. I think it could pretty easily handle a couple thousand lbs. The arm cost me about $30 in steel from a scrap yard to make. As you'll notice I'm not really a painter ;-)
At christmas I bought a 4,000lb electric winch with a dyneema rope. Comes with an electric remote control etc, cost $140 from ebay. I'm expecting it will pickup nowhere near 4,000lbs maxed out, even with the rope doubled. Maybe 1,500lbs with the rope doubled.
If you build a 'tilting arm' type crane like the one in the OP, it's nothing to pickup a used ram and a valve, especially if you have a hydraulic PTO on your truck. Most expensive part will be the hose. If you dont have hydraulics then you can add an extra power steering pump to your engine for very little $ if you are handy. You'll need a tank for the fluid.
I'm still thinking to put hydraulic on mine. I have a big hydraulic PTO for the tipper already on the truck and a big tank as well, but I want a rope not a tilting arm so I need a hydraulic stator and drum, or the guts of a hydraulic winch. Neither are cheap or common. Hydraulic is approximately 9million times better than electric.
Shaun