Crane Wind Problem
1 crane wind of the problem
Crane wind problem,
lift hoist design is an important issue, the relevant safety standards and requirements, the specific provisions of the
Hoist equipment should have the wind safety facilities. However, the large port cranes wind damage rail accidents have occurred, the number of cranes with severe collapse into the sea.
Before the accident, reason to suspect that the original provisions and correctness of the theory, even put forward a new theory, the introduction of new wind unit, is understandable. However, careful objective analysis of cause of the accident, looking for accidents common, scientific and thoroughly solve the problem, it is more beneficial.
2 crane accident in common wind
Accidents in common, what is it? First hurricane wind field on quantitative very vague, say windy, but who can not tell how much wind in the end. However, there was no significant local meteorological wind, for example, more than 12. The local storm photos, videos compared Beaufort wind scale on all levels of description, all the scene of the accident no more than 1O-level winds. How could this level of wind blown crane it? Puzzles have been proposed, the scene of wind wind damage, is not an ordinary wind, but wind squall line, there are also said to be a class of tornado winds. Maybe there is such a wind, but this wind seems to specialize towards
hoist equipment scraping, even in close proximity of trees, buildings, able to survive, is a bit strange.
All incidents have in common is that the wind has turned the
lift hoist from tipping over all exceptionally experienced before taxiing.