Analysis of the hidden dangers of rust and bending of the hanging mechanism of the hanging basket for high-altitude work
1. Hidden danger pictures
2. Description of hidden dangers
The hanging mechanism of the hanging basket is rusted, bent and cracked.
3. Basis for hidden dangers
1. Article 5.2.1.1 of the Inspection Standard for Building Construction Lifting Equipment and Facilities (JGJ 305-2013): The steel structure and welds of the suspension mechanism and suspension platform shall be free of obvious deformation, cracks and serious corrosion.
2. Article 5.2.9 of the Technical Regulations for the Installation, Dismantling and Use of Hanging Baskets for Working at Height (JB/T 11699-2013): i) The main structural parts reach the scrapping conditions, corrosion,
When the calculated stress of the structure exceeds the original calculated stress by 10% due to wear and tear, or the corrosion depth reaches 10% of the thickness of the original component, the suspension mechanism should be scrapped and updated in time after the overall instability or the main stressed component is permanently deformed and cannot be repaired.
4. Skin disease analysis
The steel structure and weld of the suspension mechanism are corroded, which is easy to cause the bearing capacity of the suspension mechanism to be reduced, resulting in the instability and overturning of the suspension structure.
When the structural parts are obviously deformed and cracked, the stability of the whole machine will be affected.
5. Photos of hidden dangers after rectification
6. Similar accident cases
A hanging basket overturned accident in a project in Yueyang, resulting in one death and one injury! Cause of the accident: There are serious safety hazards in the hanging basket
On June 16, the Hunan Provincial Department of Housing and Urban-Rural Development reported a hanging basket overturning accident at a construction site, and 1 person died: On June 12, 2023, a hanging basket overturned production safety accident occurred in the G bid section of Yueyang Evergrande Health Valley Project in Yueyang City, resulting in 1 death and 1 injury.