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anyone have cool pics of linkages and leverage in action? looking for welding project ideas....


Eddo Rogue

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I have a welding project of which I am trying to build a caster base where the casters are on a pivot or scissor system of kind, so it can both roll raised and sit flat off the casters. Eventually it will hold one of those big combo disc/belt sanders for carpentry (shop fox). The original idea was to use locking casters and keep the base as low as possible, but I felt it would never be stable enough on casters, even big locking ones, it needs to sit flat on the base.

I got something going on one side, but now feel like I should mock up both sides and maybe use one lever across it all.

I want something like those quick kick dirt bike stands that telescope up using linkages and leverage and/or a cam lock of some kind.

Haven't had much luck on google searches. Anyone have pics of linkages and cam locks etc. in action? it could be anything: machines, farm equipment, tools, household, sports, art...

I would like to gain a better understanding of pivot points, fulcrums, leverage etc...stuff an engineering degree could probably tell me.

I should probably post this on a welding or diy forum, but not a member of any, plus this is more fun...Cheers!
 


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pjtoledo

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would it be easier to have fixed casters and drop down feet?

small tabs at the corners, grab some screws from big C clamps.
grind a hex on the screws so you could power them with a drill.
 

alwaysFlOoReD

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I did this on a friends 4x8 welding table, no wheels. He has a small company in the oil field trade and needs the table absolutely level for certain jobs. Works great.
 

Eddo Rogue

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would it be easier to have fixed casters and drop down feet?

small tabs at the corners, grab some screws from big C clamps.
grind a hex on the screws so you could power them with a drill.
I thought about that, but must mind the working height. Plus these will be used by carpenters and moved by laborers, who are good at what they do, but otherwise meatheads...and impatient. It must be quickly and easily deployed and secured, and "idiot proof" .
 

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My local home depot is starting up the garden section. The display shelves have a locking foot system you might copy. I did find some feet similar one time at Princess Auto (Harbor Freight).
20210404_102140.jpg
20210404_103237.jpg


Second pic is missing the foot but should be easy to figure out.
 

Eddo Rogue

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My local home depot is starting up the garden section. The display shelves have a locking foot system you might copy. I did find some feet similar one time at Princess Auto (Harbor Freight).
View attachment 58044View attachment 58045

Second pic is missing the foot but should be easy to figure out.
Awesome, that's exactly what I'm talkin about...Looks like a more simple version of the dirt bike lifts. I will see if there's any materials that match for telescoping, and mess around with that. Thanks!
 

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Some better picks of the pieces I bought.
20210404_145233.jpg
20210404_145202.jpg
20210404_145210.jpg
20210404_145245.jpg
20210404_145245.jpg
 

pjtoledo

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I thought about that, but must mind the working height. Plus these will be used by carpenters and moved by laborers, who are good at what they do, but otherwise meatheads...and impatient. It must be quickly and easily deployed and secured, and "idiot proof" .



'idiot proof" hmmm,,, might need a real engineer to figure this one out. :icon_rofl:
 

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I'll try to get a picture tomorrow, but we have a mobile staircase at work for the pallet racking that works like you are going for... I think you are just missing one link, the bottom needs to be a shackle not solid so it can do like it is doing in your picture...
 

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First... there’s no such thing as idiot proof, the best you can shoot for is idiot resistant.

Second... You want the casters to be the retractable part. The movable part will always have a little slop to it. That will transfer to the table top and whatever is mounted to it. While your moving it, that won’t mean much, but as you’re using the equipment on top you want it rock solid.

Depending on budget, weight, flooring, etc. you may want to pick up a used or cheap pallet jack as your base and build off that.
 


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