Hymo scissor lift/table

[Old School]

Started with partial disassembly of my scissor table. Doing some rust removal and giving it a fresh layer of paint.

This particular type (X10-11) of is capable of lifting 1000kg. Wondering what it will take to increase the capacity to let's say 1500kg. The cylinder looks sturdy enough to take care of it. What's the first weak link, the motor?

 

[Old School]

Tried to upload some pics via Imgur, since PB ***** a big time, but something doesn't add up....

 

[The Cobbler]

my guess is almost everything would be subject . it is engineered to work safely at the rated load plus a bit more , to be saleable at a market price, be profitable, and so on.
my guess is the metal would be first in the line . you're asking it to do a 50% increase ...

 

[Old School]

Another failed attempt to post pics via Imgur.... copying the url into the 'add picture' button but no joy. Anyone got an idea what's going wrong?

 

[Old School]

Anyway, without showing the pictures, I can say that the structure is very solid, approx 5mm thick. The cylinder is 5x size of your average hydraulic jack capable of lifting 2000kg. I would say the metal frame and the cylinder should be more than up to the job.

 

[csp]

Upload the photos directly into your posts as an attachment.

 

[Old School]

This should work better..... must have missed this option. I checked the thickness of the frame and it's 1cm BTW.....

 

[SundayFunday]

Have you checked to see if 1000kg is it's true limit or if it is just it's rating?

Last place I worked, I had to replace a few scissor lifts because we were lifting twice the rated capacity on a daily basis, and the metal cracked and gave way over time.

 

[Old School]

I checked the type#. All I can find are pictures from past auctions and all show 1000kg sticker. And if I'm correct the 10 stands for 1000kg and 11 for 110cm max lift.

 

[nadogail]

The force exerted by a hydraulic cylinder is a function of the area of the piston and the pressure of the fluid.

So calculate the area of the piston and the pressure of the fluid and you will be in the ball park.

A plant I was at reduced the pressure in the compressed air system because a Vice President who was an Engineer figured the over head costs would be decreased. He said we did not need the pressure we were using. When the pneumatic hoist would no longer lift its load, I asked for larger diameter cylinders, and justified my request with simple calculations.

My manager took my figures to a meeting, and the VP said "Dammit, he is right".

 

[Old School]

Thanks, but I have no idea what's the pressure the pump produces. I think both pressure and piston size are up to the job, but I expect some kind of (blow off?) valve to regulate/set the maximum pressure and dictate the maximum load.