rotatign mechanism suggestion

[SAEEDGH]

hi.
i want to design a structure for rotate this part about green axis.
can you seggest me a mechanism.
dimention of part:
9906 mm
2658 mm
cross section: 450*450 mm
weight:9000kg

 

[dvd]

A slewing ring bearing with a drive pinion comes to mind.

 

[MintJulep]

What direction is gravity?

 

[dtimberlake]

rotate for fabrication?

or it will it rotate in service ?

 

[SAEEDGH]

rotate for fabrication?

or it will it rotate in service ?

for repairing and service

 

[SAEEDGH]

A slewing ring bearing with a drive pinion comes to mind.

its not appropriate for this goal. i want to rotate abous green axis.

 

[mfgenggear]

View attachment 9083
hi.
i want to design a structure for rotate this part about green axis.
can you seggest me a mechanism.
dimention of part:
9906 mm
2658 mm
cross section: 450*450 mm
weight:9000kg

Electric rotary head

 

[3DDave]

SAEEDGH, have you any examples of similar structures moving as you want this one to do?

You haven't bothered to tell which way this axis is oriented relative to the gravity of the Earth.

Looking forward to a complete description of all the requirements and not just a couple that make it appear to be a problem that has no solution.

 

[Jboggs]

You must first decide how to support it in the desired orientation. (axis horizontal, vertical, at an angle?) That means identifying the bearing locations. You haven't given us enough information to know where any interferences are, etc.

After you have established some way to support it, then you can look at how to drive it.

 

[SnTMan]

Weld positioner

Regards

Mike

 

[mfgenggear]

View attachment 9083
hi.
i want to design a structure for rotate this part about green axis.
can you seggest me a mechanism.
dimention of part:
9906 mm
2658 mm
cross section: 450*450 mm
weight:9000kg

Let's try this again , let's establish axis., y, x , and z. Z would be direction of the axis. Axis w would be rotating of the entire part. Are want to rotate ot move in the z axis?

 

[dvd]

its not appropriate for this goal. i want to rotate abous green axis.

Only you know the reason why.

 

[MintJulep]

I'll assume the green axis is horizontal.

1. The center of mass appears offset from the green axis, so torque will vary over each rotation. You need to calculate how much.
2. You need to select a drive and brake with suitable torque in both modes, and backlash that meets your needs.
3. You need to decide if the thing is stiff enough for whatever on its own, or if it needs support to limit deflection.
4. You need to design and attach a physical axle on both ends. Check for shear, bending and fatigue.
5. You need to select appropriate bearings or rollers.
6. You need to design and build supports.

Conceptually, it might look something like this, except scaled up. https://www.ljwelding.com/products/...djustable/4-ton-pipe-roller-hd2l-100hd2l-150/