With the rapid development of urbanization construction, the tower crane has played an increasing role in building construction, cargo handling, etc. However, since the tower cranes involve the risk of electromechanical operation and high-altitude operations, construction safety has become a matter of each tower crane must pay attention to.

1. Do not pay attention to the maintenance of the weight limiter, not conditioning the weight limiter before use, or increase the limit value, so that the weight limiter does not have the restriction goal.

2. The lifting mechanism brake is not adjusted, too loose. When in the overweight situation, you can't install it due to inertial effects, and the slip falls.

3. Automatic changing magnification mechanism, switching is not in place when changing by 2 magnification, and does not pay attention to check, or no insurance, in lifting, the movable pulley suddenly drops, causing serious accidents.

4. the wire rope is massed, it is not removed in time, and forcibly use it.

5. Because the hook hit the floor, the wire rope is loosely rebound, the wire rope is jumped out of the reel or the pulley, and severely squeezed or shares, and did not change in time. When it is full or overloaded, it causes the broken rope to fall.

6. The end of the wire rope end rope nut is not locked, so that the rope is pulled out.

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