Tower crane driver, also known as fitter, refers to the ground personnel who are mainly engaged in preparing lifting tools, tying hooks, picking hooks and unloading hooks. In most cases, they also serve as command tasks. The quality of locksmith's work has a great relationship with the safety of the whole handling operation. Usually use walkie-talkie command, generally the following people use walkie-talkie command.

Operating system

A, tower crane command to strictly implement the hoisting scheme and technology, safety requirements and measures.

The second is to correctly use command signals such as gestures, stereos and semaphores. Organize tower crane operators to tie up objects, and implement lifting, positioning, correction and final fixation.

Three, it is forbidden to overload the use of tower cranes and tools and rigging.

Four, strictly implement the provisions of the lifting area idle people are not allowed to enter. No one is allowed to climb with hanging objects. During hoisting, no one is allowed to stay under the hoisted object.

Five, when working outdoors, in case of strong winds, fog, rain and snow and other bad weather, should stop working; Night work should have sufficient lighting conditions and be approved by the relevant departments.

Six, for some reason to stop the operation of tower crane, safe and reliable protective measures must be taken to protect the hanging objects and tower crane equipment, it is forbidden to hang the hanging objects for a long time.

Seven, tower crane lifting large hanging objects through obstacles, must first survey and measure the width and height of accounting obstacles, to ensure its smooth passage.

Eight, strictly abide by the company's rules and regulations, complete the tasks assigned by the leadership temporarily.

Extended data:

Basic rule

1. The commander indicates the movement direction of the hook, arm lever and mechanical displacement with his palm, finger or arm.

2. When the commander uses the semaphore signal, the flag head of the command flag indicates the movement direction of the hook, boom and mechanical displacement.

3. When commanding the boom and hook at the same time, the commander must command the boom with his left hand and the hook with his right hand. When raising the flag, the left hand generally commands the boom, the right hand commands the hook, and the left hand commands the red flag.

4. When two or more cranes are working at close range at the same time in the work area, the tone of the audio signal used by the commander is obviously different, so it is necessary to cooperate with the gesture or semaphore command. It is strictly forbidden to use the sound guide with the same tone alone.

5. When two or more cranes are working at close range in the work area at the same time, the sounds made by the drivers should be obviously different.

6. Commanders should make it clear when using "lifting command language".

Reference source Baidu Encyclopedia-Tower Crane Command