Not sure if the question really fits here but...
I'm thinking of building a gantry crane in the barn with the purpose of lifting around rolls of geotextile. So we're talking max 100kg.
To make it relatively cheap, I was simply thinking of taking 2 studs and screwing them together as per the picture. As a sled, I was thinking of Jula's version for 699kr, and the electric winch for 999kr.
Do you think this will work? From a stability perspective, I don't see any major issues. It can be attached to the rafters/ridge. However, I'm not sure how smoothly it will roll... maybe I could lay flat iron or something so the wheels don't sink into the wood, but that could be an upgrade
Happy to take any comments or tips for a better solution.
I'm thinking of building a gantry crane in the barn with the purpose of lifting around rolls of geotextile. So we're talking max 100kg.
To make it relatively cheap, I was simply thinking of taking 2 studs and screwing them together as per the picture. As a sled, I was thinking of Jula's version for 699kr, and the electric winch for 999kr.
Do you think this will work? From a stability perspective, I don't see any major issues. It can be attached to the rafters/ridge. However, I'm not sure how smoothly it will roll... maybe I could lay flat iron or something so the wheels don't sink into the wood, but that could be an upgrade
Happy to take any comments or tips for a better solution.
Isn't it a telfer rather than a bridge? You mean the sled should ride on the horizontal beam? To calculate it, you need to know the span of the "beam" itself.
Does that cart grip around a 45 mm thick beam?
If the running cart is the same design as last fall, there isn't enough space for 45mm between the wheels and the axle the hook hangs from.
Noted this too... it doesn't fit. So instead of setting a rule, I thought I'd screw on two L irons on the beam.
The span is otherwise not a problem. I can attach at an arbitrary number of points along the way. We're only talking about 100kg as mentioned.
The span is otherwise not a problem. I can attach at an arbitrary number of points along the way. We're only talking about 100kg as mentioned.
Member
· Västra Götaland
· 1 709 posts
An I or H-beam is not very expensive in the grand scheme of things. A bit more expensive than joists + angles, etc., but it's so much better, it rolls perfectly, holds for whatever weight, etc.
Buying 2 x 6 meter beams is my advice, drill holes in the flat upper part and screw directly into the rafters with "the biggest French wood screw" you can find.
100 kg today, 500 kg tomorrow. Suddenly, you want to lift something more substantial...
Buying 2 x 6 meter beams is my advice, drill holes in the flat upper part and screw directly into the rafters with "the biggest French wood screw" you can find.
100 kg today, 500 kg tomorrow. Suddenly, you want to lift something more substantial...
Yes, I have thought about it too, of course, but I've been hung up a bit on how to splice a steel beam. Maybe it's not that picky. However, managing to weld two beams straight is not something I can solve.
As for the dimensions of the beam to fit the sled, 97mm is required between the upper and lower flanges. Looking at IPE, a 120 beam is needed, which will weigh 100kg and be a bit tricky to pick up with my small 2.5m trailer. Price 2x 6m 2400kr
It will roll perfectly anyway; I'll just put vilkejärn on the rule.
As for the dimensions of the beam to fit the sled, 97mm is required between the upper and lower flanges. Looking at IPE, a 120 beam is needed, which will weigh 100kg and be a bit tricky to pick up with my small 2.5m trailer. Price 2x 6m 2400kr
It will roll perfectly anyway; I'll just put vilkejärn on the rule.
Member
· Västra Götaland
· 1 709 posts
I would just butt the ends against each other and splice with a beam. Being precise at that point is key. I don't like welding myself, and it's super exhausting to lift up a 12m beam that's welded together anyway.A Arne999 said:
If it's only a few hundred kilos, a C-Profile for sliding doors should work.
http://www.skjutportsbeslag.se/beslag
http://www.skjutportsbeslag.se/beslag
Avoid "French wood screw" there are better options, such as "Jetting screws" they have better quality, are self-drilling, and hold better as they are not as "rough" on the surface as the hot-dip galvanized "French".M martinradbo said: