• This forum is the machine-generated translation of www.cad3d.it/forum1 - the Italian design community. Several terms are not translated correctly.

design of a pantograph forklift

  • Thread starter Thread starter mitnick
  • Start date Start date
:smile: I finally managed to have data from which to start and the possibility to choose a piston to my liking (or if neccessario more than one) and eliminate the previous!
the plane must be able to lift a load pairs to 2 tons up to a height of 2 m starting from a height possibly less than 1 m.
the dimensions of the floor should be equal to 2000 x 1250 mm.

how do I define the thickness of the floor?
What is the way to understand where and how can I place the cylinder?
the push of the cylinder calculation with a simple budget?
how to dimension the pantograph and decide according to the stability which profiles to use?

ahimè :frown: I am full of gaps and I just don't remember anything studied during my university course. how to proceed in such design or what to go to see?
 
Hi, mitnich,
I don't think these lifting systems are anymore, especially if you want to use them as car lift bridges and even worse for "human" use. hydraulic ones 20 years ago were all placed out of norm and replaced with screw ones for reasons of safety, spontaneous irreversibility of motion, environmental impact and other stories. if you design it only for educational purposes is all right.
consult who is in the sector or look for regulatory references.
Good job
 
a concrete example of what I would like to achieve can be understood at the following link:http:/www. bobozoni-auramo.it/index.aspx?m=797d=983cod=serie 1areference to model a1.20.a380

As a result of this project, it has now assumed purely didactic purposes, since it is economically proud of the purchase rather than its realisation, the first problem that arises is to determine the profiles necessary for the construction of the structure.
while remembering for me understands the procedure to follow for a correct sizing I can not establish the section of such profiles. If it were trees I would have done a difficult verification having defined a suitable sigma but how to proceed for profiles of different section?
 
meccanicamg said:
Hi, mitnich,
I don't think these lifting systems are anymore, especially if you want to use them as car lift bridges and even worse for "human" use. hydraulic ones 20 years ago were all placed out of norm and replaced with screw ones for reasons of safety, spontaneous irreversibility of motion, environmental impact and other stories. if you design it only for educational purposes is all right.
consult who is in the sector or look for regulatory references.
Good job
Click to expand...
I don't have these limitations.
practically all platforms, baskets etc. semovents for human personnel are with hydraulic actuators. . Of course, there are regulations to be respected, but from here to sanction the abolition we pass.
and if you take a look at the catalogues of producers you realize.

rather, @mitnick, did you go to the other discussion very similar to that which was reported to you shortly back?

greetings
Marco:smile:
 
certain sampom, but unfortunately my problem remains, I do not remember, I find it in my notes, the process for a sizing of the structure with different profiles from the round ones.
 
after having properly dimensioned the lift, step further will be to place the piston. for its positioning I had thought to examine the structure at its maximum extension so as to easily obtain the position of anchoring the fully extended piston. What do you think?
 
depends on the levers you have in play. the shorter the cylinder or cylinder push, the longer the longer the longer and the less the thrust will be.
 
mmm but then what bearings you put in the wheels and in the center of the pantograph how do you realize the zipper? i.e. at the central point of the auctions how do you allow rotation?
 
atofras said:
mmm but then what bearings you put in the wheels and in the center of the pantograph how do you realize the zipper? i.e. at the central point of the auctions how do you allow rotation?
Click to expand...
... bearing cushions:finger::finger::finger:

is becoming a pandemic disease, who has the cure? ?
 
What did I hurt you?
Are you using bearings or what for hinges?
how do the rods mate to allow movement?
 
I just asked you a question and you're having me, really congratulations! what professionalism you have. cmq if someone else is going to consider me differently, I was wondering whether bearings or what for the project hinges and
how do the rods mate to allow movement? Thank you.
 
atofras said:
I just asked you a question and you're having me, really congratulations! what professionalism you have. cmq if someone else is going to consider me differently, I was wondering whether bearings or what for the project hinges and
how do the rods mate to allow movement? Thank you.
Click to expand...
No, no, no, no, no. If you had that impression we apologize, it was not our intention:frown:.

the fact is that you are filling all sections of the forum with practically the same question, always receiving the same (obviously) answers.
I think you did a research and where you found the word bearings you "attached", even in old posts of years:biggrin:
from what you have answered you can find all the "general" info you want (and even more).
if you need something more specific you have to post the Yours design, with patterns, dimensions, stresses, applications and anything else (also this has been repeated several times).. but do it at once by opening a single new discussion.
you don't need to ask for other stuff, because it's already been turned and developed, you already have the answers.

for the general I repeat again,
look/study all about rf.it and your mechanical manuals that you have more than enough.

greetings and good forums (and holidays)
Marco:smile:
 

Forum statistics

Threads
44,997
Messages
339,767
Members
4
Latest member
ibt

Members online

No members online now.
Total: 1 (members: 0, guests: 1)
Back
Top