Portable lift table
Portable lift table
(OP)
Hi,
I'm a junior engineer and have purchased the lift WXP36-15 from Prest-lift.
http://www.prestolifts.com/page159.html
I would like to know what the force at the handle would have to be to tip the whole thing over. How would I calculate that?
Thanks.
Gabriel
I'm a junior engineer and have purchased the lift WXP36-15 from Prest-lift.
http://www.prestolifts.com/page159.html
I would like to know what the force at the handle would have to be to tip the whole thing over. How would I calculate that?
Thanks.
Gabriel





RE: Portable lift table
RE: Portable lift table
What are you doing with it that you're worried about tipping it from the end? I'd think if you stayed within the vendor specs for capacity you'll be fine, unless you're lifting something very large and awkward.
James Spisich
Design Engineer, CSWP
RE: Portable lift table
I guess you are speaking of vertical loads only - horizontal loads will just let the cart roll - as previously suggested.
RE: Portable lift table
Anyway, the above have given you the basis.
You need to decide if the wheels are locked or free - if free then as above have mentioned horizontal forces in direction of wheel travel will make it roll not tip.
This is really just a high school level vector problem unless I'm missing something take a look at my diagram. If moment M is positive in the direction shown then you have a tipping concern.
As Jspisich says asking the vendor may be a good idea.
KENAT, probably the least qualified checker you'll ever meet...
RE: Portable lift table
Thanks for the advice. I just determined the moment (assuming the wheels were locked) to flip the whole thing over. We are using this to support a test cell exhaust system. (A little awkward)
Thanks so much for the advice!!
Gabriel
RE: Portable lift table
RE: Portable lift table
Sorry, but why would you load something like this so as to create a 'tipping hazard' ?
Rod
RE: Portable lift table
RE: Portable lift table
Thanks again guys!
RE: Portable lift table
I would be more concerned about the test cell causing tipping than the handle. If the unit tips due to handle applied forces a good weasly lawyer will be able to get out of that; if the unit tips due to problems caused by the test cell then you're on your own.
Some questions:
1.) Is the test cell being shuttled on or off of the lift?
2.) What forces are applied (and where) by the test cell?
3.) Will these forces cause overturning?
4.) Are there ways to stabilize the lift?
5.) What are the harmonic frequencies of the lift?
6.) What frequencies may be generated by the test cell?
7.) ... ad nauseum...?