height adjustment of 4 legs by single leaflet

[reggio]

Hello.

ask me a ribbon that has the height adjustment of its 4 legs executable by means of a single flyer, the required stroke is 150mm.

time ago we used systems that allowed the central adjustment of the banks, turning a single pomelline, but in regards to legs nothing comes to mind except a "complicated" chain turn on 4 pinions+shaft+guide+.

Would you have a brilliant idea or a commercial to suggest?

 

[cacciatorino]

Hello.

ask me a ribbon that has the height adjustment of its 4 legs executable by means of a single flyer, the required stroke is 150mm.

time ago we used systems that allowed the central adjustment of the banks, turning a single pomelline, but in regards to legs nothing comes to mind except a "complicated" chain turn on 4 pinions+shaft+guide+.

Would you have a brilliant idea or a commercial to suggest?

four unimec type hammers with fast passing tree, connected by trees. or a central dish with trapezoid screw that then lifts the four sliding columns on ball bushing.

 

[meccanicamg]

I think the hammers cost too much... the idea of the trapeze screw or even a big step metric is not bad as an idea. the only problem is to realize the castle that parades with a certain precision in tolerance so as not to plant the columns.

Another idea is to make a pantograph that makes 0-150 mm excursion just like cricks of machines or like lifting platforms.

 

[reggio]

I think the hammers cost too much... the idea of the trapeze screw or even a big step metric is not bad as an idea. the only problem is to realize the castle that parades with a certain precision in tolerance so as not to plant the columns.

Another idea is to make a pantograph that makes 0-150 mm excursion just like cricks of machines or like lifting platforms.

... the main problem is the cost, considering that the tape costs 1100euro. . .

when you say pantograph you mean one or four (one for each foot) "tied" by straps or chains?

 

[meccanicamg]

when you say pantograph you mean one or four (one for each foot) "tied" by straps or chains?

I mean a single one on aluminum plate with 4 columns where to fix the tape frame. better 1 large commanded by a single point that 4 to command together, for otherwise you always find yourself at the same point to put 4 viton m16 or similar and 4 pinions welded on the bars + a knob command with engine pinion.

low cost and functionality :finger:

You could just make the whole pantograph-shaped frame with a central screw and you solved everything:

- Big screw.
- hand crank.
- 8 semibracci (iron tubular 30x15 or similar)
- 2 central pins
- 4 pins made with iron plate with welded 2 perforated ears for fixing the pins at the feet
- horizontal tape fixing
- snail made by an iron round

and little more

 

[reggio]

I mean a single one on aluminum plate with 4 columns where to fix the tape frame. better 1 large commanded by a single point that 4 to command together, for otherwise you always find yourself at the same point to put 4 viton m16 or similar and 4 pinions welded on the bars + a knob command with engine pinion.

low cost and functionality :finger:

You could just make the whole pantograph-shaped frame with a central screw and you solved everything:

- Big screw.
- hand crank.
- 8 semibracci (iron tubular 30x15 or similar)
- 2 central pins
- 4 pins made with iron plate with welded 2 perforated ears for fixing the pins at the feet
- horizontal tape fixing
- snail made by an iron round

and little more

Thank you.
If you mean a "hydraulic mini lift" my fear is that raising, the "x" of the pantograph tightens and everything becomes unstable. ...
The race is not high and I could fix it on the ground in 2 points out of 4... though. .

ps: tape is 160x1.900mm

 

[meccanicamg]

if you build it well you will have about 300 mm shortening for a lift of 150 mm or maybe even less. then surely 2 fixing points on 4 are guaranteed. You could put a guide down and set the guide to the ground. (c type with small opening on one side and mounting 2 wheels)

 

[reggio]

if you build it well you will have about 300 mm shortening for a lift of 150 mm or maybe even less. then surely 2 fixing points on 4 are guaranteed. You could put a guide down and set the guide to the ground. (c type with small opening on one side and mounting 2 wheels)

Thanks for the fact, I try to put down a quick study :d

 

[meccanicamg]

please and good work

 

[Fulvio Romano]

If you put the flyer in the center that moves a toothed wheel and four smaller wheels all around? like satellites, but they're not, because they're a fixed axle.

then the four wheels connect them axially to the screw of each leg.

I wonder if I explained... if I wasn't clear, I try to post a sketch. . .

 

[meccanicamg]

If you put the flyer in the center that moves a toothed wheel and four smaller wheels all around? like satellites, but they're not, because they're a fixed axle.

then the four wheels connect them axially to the screw of each leg.

I wonder if I explained... if I wasn't clear, I try to post a sketch. . .

and you have to always put a belt instead of the chain...but we are still there since the 4 wheels must be joined to move together

 

[Fulvio Romano]

and you have to always put a belt instead of the chain...but we are still there since the 4 wheels must be joined to move together

? ? ?
Why?
the four small wheels are in axis with the four legs, in the center a large wheel. should work, unless the legs are placed on the top of a square but a rectangle. . .

 

[meccanicamg]

? ? ?
Why?
the four small wheels are in axis with the four legs, in the center a large wheel. should work, unless the legs are placed on the top of a square but a rectangle. . .

tape 160x1900 mm...look in previous messages... impossible to put a wheel of 1.5 meters:finger:

 

[Fulvio Romano]

but why don't I read the messages carefully?? ? :frown:

 

[meccanicamg]

but why don't I read the messages carefully?? ? :frown:

It happens to me too, it's not bad... is very serious:biggrin::biggrin: