Group crane hoist is a kind of low-speed electric chain hoist, which appeared according to the construction industry and oil construction needs. Group crane hoist is mostly used for the overall lifting of external wall scaffolding in high-rise building construction, oil field oil tank production, group hoisting, and others Light and small hoist used for group lifting operations is required. The safety rules of the group hoist are as follows: 1. Before hoisting, test the hoist without load to check whether the machine is operating normally. If there is any abnormality, the cause must be found out and it will be activated after repair. 2. Check carefully whether the wire rope and hook parts are in good condition before use. 3. It is strictly forbidden to stand under the hook during operation, and the operator should actively avoid and prevent irrelevant personnel from entering the work area. 4. Operators must concentrate their thoughts and cooperate closely with their partners, lift the crane under safe conditions, and strictly forbid chatting, laughing and having fun during work. 5. The electric hoist shall be inspected, repaired and maintained regularly to keep the equipment in good condition at all times, and it is strictly forbidden to work with diseases. Sixth, the operation is operated by a dedicated person, and it is strictly forbidden for unrelated personnel to drive and lift casually. Cut off the power immediately after each use. 7. Group crane hoist, also known as welding pot hoist, climbing frame hoist, group crane electric hoist, welding pot electric hoist, construction climbing frame electric hoist, DHP type electric chain hoist, is widely used in construction and oil construction.