Hoisting and lifting refers to the use of corresponding mechanical equipment and facilities in construction projects to complete structural hoisting and facility installation. Its operation is a dangerous operation with a complex working environment and high technical difficulty.
1. Before the operation, a special construction plan should be prepared according to the characteristics of the operation, and the plan and safety technology should be explained to the participating personnel.
2. During the operation, a warning area should be set up around the operation, and a conspicuous warning village sign should be set up to prevent unrelated personnel from entering; guardians should be set up at particularly dangerous places.
3. Most of the operation points of hoisting and lifting operations must be operated by professional and technical personnel; personnel belonging to special operations must undergo special safety operation training in accordance with relevant national regulations and obtain special operation operation qualification certificates before they can go to work.
4. Operators should choose a safe location to work according to the on-site working conditions. In the area where the winch and the ground pulley cross the wire rope, personnel are prohibited from standing and passing.
5. There must be a special person in charge of the hoisting process, and other personnel must obey the command. The hoisting command cannot be used for other types of work. And it should be ensured that the crane driver can hear the command signal clearly and accurately.
6. The operation process must comply with the "Ten No-Lifting" principles of the crane.
7. The bundling requirements for the hoisted objects shall be in accordance with the bundling requirements for the hoisted objects in the first section of the tower crane.
8. The storage site for components should be flat and solid. The stacked components should be leveled with square wood and must be stable and not allowed to be super high (generally not more than 1.6m). In addition to setting up pads, corresponding supports should be set up when necessary to improve their stability. Unrelated personnel are prohibited from walking through the stacked components to prevent accidents such as component collapse and crowding.
9. When there is a strong wind of more than level 6 or heavy rain, heavy snow, heavy fog and other weather in the open air, the lifting and hoisting operation should be stopped.
10. When the crane is operating, it is strictly forbidden for people to stay, work or pass under the crane arm and the hoisted objects. When heavy objects are hoisted, it is strictly forbidden for people to pass from above. It is strictly forbidden to use cranes to carry people.
11. Precautions for frequently used lifting tools
⑴ Manual fall chain: The operator must be qualified after training, and the master can go to work. When lifting objects, the fall chain should be hung firmly and slowly pulled, and it should not be pulled obliquely. When one person cannot pull it, the reason should be found out, and multiple people are prohibited from pulling it violently at the same time.
⑵ Hand hoist: The operator must be qualified after training, and the master can go to work. Check the reliability of the self-locking clamp device before use. After clamping the wire rope, it should be able to reciprocate, otherwise it is prohibited to use it.
⑶ Jack: The operator must be qualified after training, and the master can go to work. The jack is placed on a flat and solid ground, and padded with wooden boards or steel plates to prevent the ground from sinking. The top contacting the smooth object should be padded with hardwood to prevent sliding. The operation should be gradually lifted at the beginning, and attention should be paid to prevent the top from tilting, and the weight should always be kept balanced.
