Safety operation procedures and technical disclosure of tower crane

Safety operation procedures of tower crane

1, tower crane operation should have enough workplace, boom boom boom ups and downs and no obstacles within the radius of gyration, night operation should have enough lighting equipment.

2, tower crane luffing indicator, torque limiter and various travel limit switches and other safety protection devices must be complete and sensitive.

Sensitive and reliable, and shall not be arbitrarily adjusted and disassembled. It is forbidden to stop the machine with a limit device instead of an operating mechanism.

3. Before operation, you must fully understand the surrounding environment, roads, overhead wires, buildings and the weight and distribution of components.

4, tower crane operators and commanders must cooperate closely, commanders must be familiar with the mechanical properties of the command, the operator should strictly implement the commander's signal, such as the signal is unclear or wrong, the operator can refuse to perform. If the accident is caused by a command error, the commander should be responsible.

5. When the operation room is far away from the ground and the command is difficult, two commanders can be set up on the ground and high, or effective communication methods can be used for command.

6. In case of severe weather such as gale or rainstorm, heavy snow and fog, the operation should be suspended.

7. When lifting, no one is allowed to stay or pass under heavy objects. It is forbidden to use tower crane to lift personnel.

8, it is forbidden to use tower crane for oblique hanging, cable-stayed and lifting underground buried or condensed on the ground of concrete components or templates, concrete components or templates on the construction site, must be all loose rear can lifting, crane must be in accordance with the provisions of the lifting performance operation, shall not be overloaded and lifting objects of unknown weight.

9. When lifting heavy objects, the binding shall be smooth and firm, and scattered objects shall not be stacked or hung on the heavy objects. Sporadic objects or articles must be tied firmly with hanging cages or wire ropes before lifting. The included angle between the binding wire rope and the object shall not be less than 30 degrees.

10. When lifting with full load or close to full load, first lift the heavy object 20-50 cm off the ground, stop the machine and check: the stability of the crane, the reliability of the brake, the stability of the heavy object and the firmness of binding.

1 1, the vertical speed of the crane should be uniform, and it is forbidden to suddenly brake. Turn left and right smoothly. When the rotation does not stop, the reverse action is not allowed.

12, the steel wire rope used by the crane shall be subject to the technical documents of the manufacturer, and it can only be used after passing the inspection without the certificate. The wire ropes on the drum shall be firmly connected and neatly arranged, and shall not be kinked or deformed, and all wire ropes shall not have joints.

13. After the work is completed, turn the boom to the downwind direction and open the hook to a position 2-3m away from the top of the boom.

Technical disclosure on operation safety of tower crane

1, tower crane drivers and signal personnel must receive special training and hold relevant certificates.

2, the driver should be familiar with the mechanical properties of tower crane and instructions, comply with the requirements in the instructions.

3. The driver can only start the operation after getting the clear signal from the commander. Ring the bell before you act. If the signal is not clear, don't operate at will.

4, tower crane should have two drivers per shift, one driver operation, another driver ground monitoring, in case of accidents.

5, when hang up the wire rope rigging, hook wire rope taut, the operator should immediately away from the lifting of heavy objects, more can't stand under the boom, in case of heavy objects falling, arm collapse cuts.

6. When lifting at or near full load, it is forbidden to drop the arm or move twice at the same time.

7, lifting heavy objects are strictly forbidden to fall freely, heavy objects falling application hand brake or foot brake control slow decline.

8. When the boom changes the elevation angle, it must run with no load, and other actions can't be done at the same time when it changes the amplitude. Sophomore constructor exam

9, it is forbidden to do fast rotation, to prevent the danger of too fast rotation caused by the difficulty of objects in place and the excessive centrifugal force of heavy objects.

10, listen to the command signal during operation. When the signal is unknown or may cause an accident, the operation should be suspended.

1 1. When lifting, no one is allowed to stay or walk under the boom, and the boom and objects must keep a safe distance from the overhead wires.

12. Pull the rope for lifting objects at a uniform speed. It is forbidden to brake suddenly and change direction. The translation should be more than 0.5M higher than the obstacle, and the falling should be handled gently at a low speed to prevent dumping.

13, it is strictly prohibited to obliquely hoist and hoist objects buried underground or condensed on the ground and equipment.

14. When the crane stops working, put down the lifting object, step on the brake, put the joystick in neutral and lock the switch.