Problems with the lifting lugs
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For an AEM 150-ton vertical machine, the lifting lugs are located on the top plate for lifting the equipment; how can one determine whether the bolts are strong enough to support the weight of the equipment?
Convert the weight into pressure and compare it with the design pressure of your equipment to conduct a verification; generally, the ratio of weight to internal pressure is quite low
When converting weights, be sure to include the dynamic load factor, which is generally 1.7
The weight can be converted into pressure to calculate the forces acting on the bolts. When performing the calculations, take into account the possible uneven stress distribution on the bolts, as well as the dynamic load factor during lifting; in short, it’s better to leave a slightly larger margin.
Thank you for your answer. This is my first time designing this, so I’m not entirely clear about your response. Simply put, the equipment weighs 150 tons; the lifting lugs are located on the flat cover. There are 72 M48X3 bolts used to connect the flat cover to the tube box, with the material of these bolts being 35CrMoA. How can we determine whether this setup is feasible? Thank you for your help
Thank you for your answer. This is my first time designing this, so I’m not entirely clear about your response. Simply put, the equipment weighs 150 tons; the lifting lugs are located on the flat cover. There are 72 M48X3 bolts used to connect the flat cover to the tube box, with the material of these bolts being 35CrMoA. How can we determine whether this setup is feasible? Thank you for your help
Thank you for your answer. This is my first time designing this, so I’m not entirely clear about your response. Simply put, the equipment weighs 150 tons; the lifting lugs are located on the flat cover. There are 72 M48X3 bolts used to connect the flat cover to the tube box, with the material of these bolts being 35CrMoA. How can we determine whether this setup is feasible? Thank you for your help
It is not only necessary to check whether the bolt diameter is sufficient (which is generally not an issue), but also to assess the strength of the welds at the pipe neck and the head.
How is the general imbalance coefficient determined?