Electric Hoist Travelling Crane Beam Lifting 5 ton

KF CRANE is a material handling Equipment Company that sells many types of hoist’s and cranes for certain applications. Looking through their list of portable hoists, a 2 ton has a cost around $2500 for a non-adjusting height crane and would have an equivalent rating to the one

being designed. These hoists come with casters but the trolley and chain hoist must be purchased separately. Below is an example of a basic portable gantry hoist design.

This design is relatively easy to assemble while it is lying down but would most likely require two people to stand up. Using two people to stand up the hoist after assembly seems to be an unavoidable factor in the design. The Cal Poly Rose Float club has a gantry hoist (3 ton Capacity) which was quickly examined to get a different idea of how the column and frame could be designed. After looking at the frame it was easy to see that the legs were designed poorly; they were built with 3”X6”X3/16” rectangular tube which is strong but the “A” frame design means the legs will start deflect due to the resolving bending moment and the rectangular tube was oriented to bend about its weaker axis seen in Figure