What is the meaning of "ten don't lift" in crane operation?

"Ten Don't Hoist" is the principle that lifting operation must follow. Here are ten principles in detail.

(1) hoisting is not allowed when the signal instruction is unknown;

(2) No cable-stayed or inclined hanging;

(3) It is forbidden to lift objects with unknown weight or overload;

(4) Loose objects are not firmly bound or are not allowed to be hoisted when loading;

(5) Someone is not allowed to hang things on the hanging objects;

(6) It is forbidden to hoist buried objects;

(7) When the safety device fails or falls ill, lifting is not allowed;

(8) The site is dark, and the lifting point cannot be seen clearly. Lifting is not allowed;

(9) Edge objects are not allowed to be lifted in direct contact with the wire rope without protective measures;

(10) No hoisting is allowed in strong winds above level 6.

Extended data

Safety operation procedures for lifting operation

1. Work steps, construction methods and safety measures shall be determined before hoisting.

2. Before hoisting, the obstacles on the construction site and roads should be removed to make the construction site clean and the roads clear.

3. When lifting and installing the crane, the regulations on the safe use of the corresponding crane must be strictly implemented.

4, all kinds of lifting machinery before use, should try to hang. Before trial hoisting, conduct a comprehensive inspection of the hoisting machinery and confirm that it is in good condition. Trial hoisting includes static load and dynamic load. The weight of static load trial hoisting is 1.25 times of the calibrated lifting weight, the lifting weight is 0. 1 ~ 0.3m high, the residence time is10min, and all components are inspected. The weight of dynamic load trial hoisting is 1. 1 times of the calibrated lifting weight. After reaching a proper height, do actions such as turning the arm, and then check whether all parts of the crane are in good condition. It can only be used after it is confirmed to be qualified.

5, all kinds of cranes in use and walking, should have a good road.

6, rigger must be familiar with the construction method, the performance of lifting equipment, the characteristics and exact weight of heavy objects and the requirements of construction safety.

7, crane command should be held by personnel with lifting operation experience. The commander's whistle, gestures and semaphores should be loud, correct and clear. When the driver's sight is blocked, the signal transmission personnel should be increased.

8, rigger work should be focused, clear division of labor, obey the unified command.

9. When lifting heavy objects, no one is allowed to stay or walk under the boom. When the crane stops working, a brake should be installed to tighten the hook and wire rope.

10, when lifting heavy objects with boom, the materials of boom and spreader must meet the requirements of lifting weight, and the cable wind rope and roof must be firm. ?

165438+ When two supports are hoisted, the included angle between two hangers should not be greater than 60. ?

12, when lifting heavy objects, the spreader should be fastened and the hook should be sealed to prevent slipping. When binding articles with sharp edges or edges, the spreader should be padded with iron tiles, rubber, sacks, etc. When lifting objects, measures should be taken to prevent them from swinging. ?

13, when lifting heavy objects, the hook wire rope should be kept vertical. It is forbidden to drag heavy objects or hang them obliquely with hook wire rope.

14. When lifting and transferring heavy objects, the heavy objects should be lifted to a height of more than 0.5m.

15, crane drivers and lifting personnel are not allowed to leave their posts when working, and it is forbidden to leave after lifting heavy objects. Drivers are not allowed to change operating procedures and methods without authorization. Lifting personnel are not allowed to touch electrical switches and various control equipment.

16, when two cranes lift a heavy object at the same time, it should be carried out under the guidance of the person in charge of on-site construction. During the lifting process, two cranes must balance lifting heavy objects so that their shared lifting weight does not exceed 80% of their allowable lifting weight.

17, lifting wire rope should be oil-free, no dead bending, and the broken wires in any section shall not exceed 5% of the total number of the section. ?

18. When the crane is working under or near the high-voltage line, its boom should have a certain safe distance from the high-voltage line. When necessary, isolation facilities should be set up. ?

19. Cranes operating in the open air on the ground track should have track clamps to increase their stability. Prevent the wind from being blown down as soon as it blows.

20. When the crane is working at the edge of a deep pit, the fuselage (or running track) should keep a necessary safe distance from the pit edge according to the soil conditions. ?

2 1. Cranes driven by electric motors shall be equipped with lifting limiters and lifting limiters.

References:

Baidu encyclopedia-lifting operation