Bi-folding gate 2a
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- čas přidán 5. 09. 2024
- Orange conrod, green and upper yellow cranks create a parallelogram mechanism.
There is a 4-bar linkage of the pink conrod that connect green and blue panels.
See another solution:
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STEP files of this video are at:
www.mediafire.c...
Inventor files:
www.mediafire.c...
My guess is that the forces on the small mechanism parts must be enormous. (small translated to huge swing)
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Can you please explain what is the material of the upper part of the mechanism? It looks like it gets longer while folding the gate.
ydyd Damsky
No special requirement for material of all parts of the mechanism. Ordinary steel is good.
Ok so I commented on your 1st video for the unfolding gate but it was the wrong one. Yhis is the one I was looking for. Is there a special relationship between the links for this linkage?
Links of the 4-bar linkage were determined by "try and adjust method".
Please use the CAD files (their links to download are in the video description) for getting the dimensions.
Dear friend. I plan to make these gates in metal. I kindly ask to explain leverage development method for opening and closing the second part of the gate. In your files Autodesk Inventor I see that different levers 118 mm, 30 degrees a second 110 mm 33.7 degrees. Why do not they symmetrically? Milorad . Saint-Petersburg. Russia
The symmetrical dimensions do not give good result. At first an antiparallelogram mechanism was used but no success.
So the lever dimensions were determined by drawing (trying step by step to get the most reasonable ones).
All clear. Thank you so much.
hello milorad. did you made the gate in metal?
Yes, I made bi folding gates. But, the work of these gates was not very successful. Because, due to the large inertia in the critical points, the gate folding mechanism worked not correctly. I used levers and thrusts for the second door. Video: winter 2018. St. Petersburg. Russia. czcams.com/video/tsiYwDlbOZc/video.html
Does the second door (half gate) move independently of the first one?
No. There is a 4-bar linkage of the pink conrod that connects green and blue panels so the two panels don't move independently from each other.
@@thang010146 Thank you, I changed the joints. Now everything works fine
what software u use?
It is Autodesk Inventor.
What software were used to made it please?
It's Autodesk Inventor.
dear sir pls send me the mechanism of movable stairs case or escalator..i hope you do it.thank you.
I am afraid that I can not. It is complicated.
sir can you give me your mail id
dear sir ,pls send me your mail id in my mail- dharambirpoddar@gmail.com
My email:
thang010146@gmail.com
@@thang010146 hi can you send me the bi fold mechanism detail
hello sir please let me have your contact details. I am in process of making bi folding gate. I could do the top mechanism but unable to understand the bottom mechanism. Please send me a sketch of the bottom mechanism. Also the second leaf gate cantilever is becoming problem how i handle that. looking forward to hear from you.
Please use the CAD files of this video for understanding the gate.
Links to download them are given in the video description.
sir thank you for your quick reply, but I could not find any files with dwg extension. I found files with extension ipt and stp which am not able to open. Please help me out
I dont have solid works on my computer can you help me with autocad files. Havent been able to import STP files
Please see:
knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Importing-a-STEP-file-into-AutoCAD.html
Dont use this one. There is a collision with the linkage when closed. It is not a strong design and has a pinching hazard.
hi ı need bi folding gate mechanism