UNICAT lift up roof ?

[tooth_adams]

Great post. Thanks. I will be referring to a lot of this come time for my framing and build. The worm gear screw jack system seems the most bulletproof. Ideally it could also be manually operated in the event of motor failure... I like this a lot.

 

[Victorian]

Great post. Thanks. I will be referring to a lot of this come time for my framing and build. The worm gear screw jack system seems the most bulletproof. Ideally it could also be manually operated in the event of motor failure... I like this a lot.

Question is: How do you crank all 4 jacks at the same time?

 

[axehead]

I have used these Thomson products in a very different application at work, but found them to be very reliable.

I have been thinking about a scissor mechanism on both (long) sides and having these mounted horizontally to drive the scissor.

http://www.thomsonlinear.com/website/com/eng/products/actuators/electrak_ppa_m.php?version=desktop

They also make guides and other bits and pieces

http://www.thomsonlinear.com/website/com/eng/products.php?version=desktop

 

[1cambo]

Question is: How do you crank all 4 jacks at the same time?

The same way you do when they are on a camper i guess.....

 

[Divster]

Funny, I'm desining this just now.

Worm gears, ball screws and linear rails.

 

[DirtWhiskey]

Very interesting. I have been thinking about this too and I think syncing all 4 jacks is unnecessary. If you couple them in front to back pairs, ala trailer landing gear, it should do the trick. The only variance would be on the north south axis but it should prevent binding.

 

[Divster]

It's definately necessary. I'm designing the lift system with 1:50 worm gears. With 3nm and that gear ratio, any async move would completely mangle the roof

 

[The Artisan]

Funny, I'm desining this just now.

Worm gears, ball screws and linear rails.

View attachment 595925

Nice I designed something similar but have since used the design to lift the pod off and on off a flatbed.
Kevin