Fixed Lifting Frame
Fixed Lifting Frame
(OP)
Could anyone point me to the design and/or OSHA requirements for a lifting frame? It is a gantry design made of stainless tube steel. It has one purpose and that is to lift a hinged section of conveyor out of the water for inspection. There are no trollies on this frame, just a fixed lifting point with an electric hoist attached. I need to provide a load rating for this frame, but I'm not sure what the FOS should be, and if there are other requirements. Any help would be appreciated.





RE: Fixed Lifting Frame
RE: Fixed Lifting Frame
RE: Fixed Lifting Frame
Take a look at the codes and stds. for crane design. Most of them don’t deviate much from the AISC Manual, in terms of steel design and AWS in terms of welding. They load test to 1.25 or 1.5 times the design loading. But, they also expect regular maintenance and inspection, the more so if the equipment is constantly exposed to a bad environment. You might consider putting your hoisting equip. at the middle of the horiz. overhead beam in some sort of a well ventilated ‘dog house’ to keep it dry and out of the weather.
It could also be two pipe legged “A” frames, leaning in toward the hoisting equip., thus shortening the overhead beam span, and improving the stability in the direction of the beam axis.