movimento barrel with electric actuator

[Exatem]

I would say that lightning is basically right in the sense that the more the actuator is parallel to the door, the worse it is.
I think of the system adopted for the opening/closing of the jackets of the submarines that, despite the weight, open and close almost effortlessly (in this case the actuator is rotative and is a big spring).

 

[AngeloB]

Excuse me, but by the way, what numbers do you get out there?

 

[cacciatorino]

Excuse me, but by the way, what numbers do you get out there?

It seems to me that your accounts are right, but it's a problem that they wouldn't even give in the second year of theitis. :smile:

 

[gtemp]

Good morning, everybody.
Although it is a simple problem, I apologize for this... a long discussion has been unleashed.
It is clear that the actuator is in an unfavorable position, I will try to find a better position. . .
Thank you for your time.

 

[Focus]

If they are constructive, well be the long discussions! :finger:

 

[Fulvio Romano]

Good morning, everybody.
Although it is a simple problem, I apologize for this... a long discussion has been unleashed.

If they are constructive, long discussions are well

we take our time to our free will, and of course you must not feel guilty about it.
Besides seeing expert designers with diametrically opposed ideas on such a simple problem, it makes this one of the most constructive discussion of recent times. :finger:

 

[sampom]

we take our time to our free will, and of course you must not feel guilty about it.
Besides seeing expert designers with diametrically opposed ideas on such a simple problem, it makes this one of the most constructive discussion of recent times. :finger:

it is not that ideas are just diametrically opposite; I think we all agree that the trap would be good or bad. the fact is that that cinematism is definitely "unfavorable", unnecessarily overloaded. it is recommended to adopt an actuator at least 4 or 5 times greater than the weight of the door, and the same goes for the sizing of the fasteners, with a wide counterplate under the door where there is the hinge of the stem. Why would you force yourself to exaggerate when with an oculated and "ergonomic" study of the scheme you could solve best?

 

[cacciatorino]

Why would you force yourself to exaggerate when with an oculated and "ergonomic" study of the scheme you could solve best?

Because without knowing the conditions in which the mechanism will be mounted, how do you give an opinion and above all to say that this is not okay?

I think that even gtemp knows that mechanism is unfavorable, but if he introduced it so it means he had no choice.

rather I find questionable the opinion of those who said that the system forced too much on the supports, without first asking for what loads we are talking about, of what cylinder, of what kind of pins/cloths, etc. etc.

 

[gtemp]

Because without knowing the conditions in which the mechanism will be mounted, how do you give an opinion and above all to say that this is not okay?

I think that even gtemp knows that mechanism is unfavorable, but if he introduced it so it means he had no choice.

rather I find questionable the opinion of those who said that the system forced too much on the supports, without first asking for what loads we are talking about, of what cylinder, of what kind of pins/cloths, etc. etc.

it is not that ideas are just diametrically opposite; I think we all agree that the trap would be good or bad. the fact is that that cinematism is definitely "unfavorable", unnecessarily overloaded. it is recommended to adopt an actuator at least 4 or 5 times greater than the weight of the door, and the same goes for the sizing of the fasteners, with a wide counterplate under the door where there is the hinge of the stem. Why would you force yourself to exaggerate when with an oculated and "ergonomic" study of the scheme you could solve best?

@cacciatorino, you're right I should have presented better the problem and boundary conditions.
the choice to place the electric actuator in that position is linked to the geometric constraints that there are, in practice a reinforced concrete beam that represents the only point where to anchor the hinge bracket of the actuator.
I am now trying to work on a solution with the actuator in a more favorable position, considering that, as someone observed, it would be oversized also the hinge, but as already the trapdoor is existing and has 2 hinges to weld of steel (black robe, forgive me the blacksmiths but it is not to diminish their work, but to make to understand what kind of hinge it is)....
I have to put my hand back to work. .
Thanks again!!

 

[gtemp]

Guys,
I go back to writing about this subject after 2 weeks.
I solved the problem with an actuator placed near the hinge, about 120 mm from the hinge, actuator pushing vertically... we mounted everything and it works smoothly...I put the 2d schema of the application..thanks for the help! !

 

[gtemp]

Good morning.
Here's the pattern...

 

[sampom]

Good morning.
Here's the pattern...

Here! This is precisely the configuration that I had in mind and which I used to adopt (in the limits of possible, obvious :smile.

 

[Fulvio Romano]

Here! This is precisely the configuration that I had in mind and which I used to adopt (in the limits of possible, obvious :smile.

eh, yes... this is how linear actuators love to work, especially hydraulic ones (although this is not the case).