Tài liệu Kỹ thuật nâng - vận chuyển - cơ cấu quay

1. KHÁI NIỆM
The slewing mechanism serve the purpose of imparting rotary motion to metal structure of crane integrally with the hook load.

nIt differs materially from the rest of crane mechanisms consider above in that involved in the motion are gyrating masses alone, non of the rectilinearly displacing ones