Lifting method
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1. There is a lifting method for lifting equipment called “pole wrapping”. Could someone explain it using a diagram? 2. Are the lifting lugs used for the \"pole holder\" of the axial type or the side plate type? 3. What other lifting methods are there besides using a jib?
You mean equipment lifting when there are no large lifting machinery devices, right! ? Only someone who’s a bit older can explain this to you, but do those who are older still go to Shanghai Chuan? :lol
A jib is a large column used in lifting operations; it works together with winches, pulley systems, and steel cables to lift objects weighing hundreds of tons right at the location where they are needed. The column body is made of angle steel; those with gaps are called grid-type, while those made entirely of steel plates in a fully enclosed structure are solid-web type. The pole holder is the one shown in the illustration; the one with a single pole is called a single pole holder. Moving the lifting pole while it is in an upright position is called horizontal displacement. ————For details, please refer to \"Crane Operation Technology\"
After looking at the first picture, I suddenly remembered that when I was a child, in the countryside, electricity poles were set up in just this way, by using human strength!
Thank you so much. I have two more questions: 1. If a boom is used, is it then not necessary to install lifting lugs on the tower? 2. Is the mast one type of brace?
The styrene dehydrogenation reactor in our plant is lifted using jacks. It’s been almost 20 years. At that time, large-tonnage cranes were rare, expensive, and the road conditions at the site were not good either. After comprehensive analysis, a jib lifting solution was adopted. The lifting team determined several points at the site where jacks, cranes, and towing mechanisms would be placed; the steel cables were connected in series, and all parties worked together under the supervision of the team leader. It seems very professional, and one must have extensive experience. It’s estimated that there are few professional boom lift teams like this these days. A jacking pole involves selecting a lifting point based on the site conditions, which is a different concept from installing lifting lugs on the tower.
A pole-like device, similar to a chimney, with pulleys and winches attached to it; it’s a tall, vertical apparatus. Such devices are still in use today in situations where cranes can’t be utilized. Last month, a few people from our workshop used a pole over 2 meters long to install an exhaust pipe that was 6 meters high and made of 273 tubes – it worked very well
Check the national standards; there is a specification regarding lifting, and there is a more detailed explanation available there. \"GB 50798-2012 Code for Lifting Works of Large-scale Petrochemical Equipment.\"