I have a particular problem on one of my construction sites.
My mission is to design a self-supporting gate.
This kind of work is pretty usual for me.
However, the slightly unusual dimensions of the gate make me wish I could know the deformation of my structure before production. For I can adapt if necessary the sections.
Being the owner of Solid Works for a few months, I don't pretend to be able to get by on my own.
So I'm looking for someone who could help me with this project.
In a few lines, the gate is 12 meters long and 1800 mm high. The 8000mm opening is cantilevered compared to the trolleys attached to my foundation. My idea is to know that it will be the arrow of my portal.
There is a lot of information missing to answer you ;-) In particular the shape of the bars and whether or not you have one or more bracing.
Can you post an image of the portal or an equivalent portal because in the end you only have two meters at an end to the point of balance of the masses which is at 6 meters.
What you will have to calculate is the field arrow at the equilibrium point and the field arrow a few centimeters before the gate reaches the shoe which probably has a landing wheel.
Here is an old plan, at the time in 2d of the model, and a photo of a finished barrier dressed with aluminum covers.
The structure is usually made of 100/50/3 tubes.
In this specific case, I would have 8 meters of opening, I estimate the total weight of the gate at a little less than 800kg I planned here to work with diagonal elements with maybe possibility of tensioners but I'm not a fan.
In concrete terms, if I make a 12-meter frame with 8 meters of overhang, what will my arrow be? Knowing that I don't take into account the rigidity of the rail itself.
As soon as I have some time, I try to make you a model of the chassis in solid works
A link that redirects you to my site with the portal template: http://pro-metal.be/travaux/photos-catalogue/catalogue-prometal-38.jpg
My rail is 136mm wide, I would like as much as possible, to work with rectangular tubes like 100x50 (which we usually use) or 120x60 with the long side horizontal.
This is important for the production of the aluminium covers which must cover the front side of the tube.
Thank you for your answers ! This community is great
You know I only used the template provided by @Benoit_3.
I only removed the small defects necessary for the simulation (going from a beam model to a "volume" model and removing collisions)
But maybe you could specify how you would see the beam because I'm not a specialist in mechanical-welding ;-)
From what I understand @benoit_3 laying sheets on the sides (so the beams are no longer visible after assembly hence the identical spacing of the horizontal bars) Look at the photo he posted ;-) As these beams are no longer visible to the customer, I took the liberty of suggesting that he make pocket reinforcements.
I pushed grandma a little into the nettles with the hypothesis following a child of 40 Kg who puts himself on the end of the gate on a windy day.
This results in a larger field deflection of 54 mm because combined with a warping similar to a moderate spill. The vector of Gravity is at 20°, which is already substantial.
In other words, I shook your model a little to see if other concentrations of constraints appeared. Nothing dramatic if you take into account my suggestions in the previous report ;-)
If I understand correctly, my current model in 100x50 tubes is viable as long as you add a few gussets.
I would never have thought this section sufficient.
I had already imagined diagonal tensioners or something in the idea.
In terms of budget because it's the sinews of war, I have the necessary margin to switch to a 120x60x3 tube. Is it better to switch to 120x60x3 or 100x50x4? The thickness or the size?
I obviously have no problems with adding gussets
I'm starting production on Monday morning, I'm making my plans this weekend and in 3 weeks I'll be offering you the photos of the result
I almost forgot to thank you for your help. You're on top of your game
Here is the model after removing stress concentrations.
Your boom is only 16 mm with a safety factor of >3. I left a 10 kg load at the end of the gate before landing.
In order not to increase the cost unnecessarily (or increase your margin ;-) ) it is not necessary to put gussets everywhere but only in the places of the model (Gusset = Thickness 15 mm) but you are free to put more or change the shape. I have put the sides of the gussets in a zipped attachment.
If you are satisfied with the answers you have been given, you can close the topic by selecting, for example, the best answer in your opinion among those that have been proposed to you.
