Causes of accidents caused by cranes to unhook and fall
1. The unsafe state of the crane is firstly the risk caused by irregular design, such as overload protection failure, insufficient balance axle strength, no decoupling prevention device, unreasonable selection of spreader rigging, etc.; secondly, manufacturing defects and installation defects, etc. Such as improper selection of materials and poor processing quality, so that the equipment with hidden dangers is put into use. A large number of problems exist in the use link, such as failure to replace scrap parts in time, lack of necessary safety protection, poorly maintained and diseased operation, resulting in loss of movement, damage to parts or structures, and irregular safety performance inspections.2. Human unsafe behaviors. Human behaviors are affected by various factors such as physical, psychological and comprehensive qualities, which are manifested as unskilled operation skills, lack of necessary safety education and training; non-driver operation, unlicensed work; violation of regulations and disciplines Recklessness, bad operating habits; misjudgment of operation, unclear command signals, uncoordinated cooperation between lifting drivers and lifting workers, and human biological rhythms in the "three-high zone", etc.
3. Unfavorable environments with environmental factors exceeding safety limits or sanitary standards, such as high dust, high temperature, high humidity, low temperature, high noise, windy days, poor lighting and other environments when lifting operations will distract attention and directly affect operations The response ability of personnel and the stability of technical performance increase the chances of misoperation and illegal operations, leading to accidents.
4. Safety management defect management includes the safety awareness level of the leader; the management and inspection of cranes and the implementation of regular safety performance inspections; the safety education and training of relevant personnel; special training for lifting operators, the establishment of crane safety operation regulations and violations The establishment of the reward and punishment system and the emergency response plan for accidents lack effective monitoring and management of the regular inspection of lifting equipment and lifting aids.
