What are the formal language skills for construction tower crane commanders? What do they mean?

Tower crane commanders do not have professional terminology and generally use command signals such as gestures, sounds, and flags.

Basic rules for tower crane command:

1. When commanders use hand signals, they should use their palms, fingers or arms to indicate the movement direction of the hook, arm and mechanical displacement.

2. When commanders use semaphore signals, the head of the command flag indicates the direction of action of the hook, arm and mechanical displacement.

3. When commanding the arm and the hook at the same time, the commander must use his left hand to command the arm and his right hand to command the hook. When commanding with a flag, he usually holds the red flag in his left hand to command the arm and his right hand to command the arm. Green flag command hook.

4. When two or more cranes are working in close working areas at the same time, the tones of the audio signals used by the commanders are obviously different, and they must be coordinated with gestures or semaphore commands. It is strictly prohibited to use the same tone of voice conductor alone.

5. When two or more cranes are working in close working areas at the same time, the sound produced by the driver should be obviously different.

6. When commanding personnel use the "hoisting command language" to command, they must speak clearly.

Extended information:

Process for applying for tower crane command and operation certificate:

Service procedures:?

Step one: The applicant holds relevant Please register at the window of the Municipal Work Safety Bureau of the Municipal Affairs Service Center and fill out the "Special Operation Safety Technology Training Assessment Application Form";

Step 2: Participate in the Special Operation Safety Technology Training;

Step 3: After passing the assessment, take the assessment certificate to the window of the Municipal Work Safety Supervision Bureau of the Government Affairs Center to receive the "Special Operations Operation Certificate of the People's Republic of China"; for those who fail, the unit or person will be notified in writing.

Required materials: 1. A personal ID card and a copy, and a one-inch photo without a hat; 2. Education certificate; 3. Physical health certificate; 4. Training and assessment certificate.

Charge standard: No charge for review

Processing time limit: After passing the training assessment, go to the window of the Municipal Work Safety Supervision Bureau of the Municipal Affairs Service Center within 15 working days to collect the "People's Insurance Certificate of the People's Republic of China" *National Special Operations Operation Certificate".

Reference: Baidu Encyclopedia-Tower Crane Command