256HC Mast Section the Connection Technology of high-strength bolts of tower cranes
high-strength bolts of tower cranes are the main components of tower cranes The connection of tower body, tower cap and other parts all depend on it to realize, therefore, great attention must be paid to the installation and disassembly of tower crane to ensure proper pre-tightening force of high-strength bolts This paper mainly describes the connection technology of high-strength bolts in tower cranes and the problems needing attention in the connection of high-strength bolts in tower cranes. 1. The end face of bolt hole should be flat. 2. Joint name should clean up dust, paint, stains and rust. 3. The thread and the nut end face and so on place must smear the butter. 4. Torque wrench or special wrench should be used in installation. 5. When the use of copy order has the number of use request, should be strictly implemented.
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