Wheel Loader Right Boom Cylinder

Improper selection of lifting tools or lifting points, lack of theoretical calculations, insufficient or local bearing capacity of lifting tools, pipelines, and structures, instability in one area, leading to overall collapse.
When the lifting tool sets the pulleys and ropes improperly, the stress changes in the pulleys and ropes tied to the pulleys caused by changes in the angle of the fast rope are not enough. The tonnage of the guiding pulley is too small, and the rope tied to the pulley is too thin, causing the rope to break and fly due to overload.

There have been many accidents of hanging objects on empty slings, and the lifting work has been completed. When the hook is running with an empty rope, the free state sling pulls the lifted object or other objects. If the operator or commander fails to respond in a timely manner, an immediate accident may occur, which can have very adverse consequences for both the operator and the crane.
The disconnection between the lifting construction plan and the actual operation is mainly manifested in incomplete content, lack of necessary information, or inconsistency between the construction method and the actual operation situation, making the construction plan a shield to deal with higher-level inspections, rather than guiding the construction.

Due to installation process requirements, some equipment or components need to be suspended in the air before being fixed in place, while some suspension rods need to stay in the air for a long time. If there is no safety rope, it can cause serious consequences such as hanging and falling if accidentally vibrated, impacted, or damaged by welding wire.
Unclear process handover or loopholes in the balance of multiple unit construction processes. If some structures on the platform or the previous shift are demolished, but the handover after work is unclear, it is unclear whether Zhang San's shed can be taken to Wang Wu's place. Unit A cuts off the platform crossbeam, while Unit B continues to place heavy objects on the platform, causing temporary support overload. The problem occurred, and we still don't know what happened.

The construction is too busy to confirm the progress, and there is no underground consultation at the crane station; Failure to correctly confirm the weight of the lifted object before homework, failure to promptly detect potential hazards such as leaks in high-voltage lines, operating equipment, and coal oxygen pipelines in the surrounding environment, as well as safety warning signs from the owner's unit, resulted in serious losses.

Use a sling with a 'fault'. Some people use rope buckles to save time. They don't know that this is a discarded rope buckle thrown by someone else. Some have internal injuries, some have partial tempering, and some have welding. These problems and difficulties are not easy to identify; Some people are tempted to purchase unqualified slings such as pulleys and lifting rings produced by non-standard manufacturers at a low price, making workers worry free during work. To ensure construction safety, please do not use rope buckles thrown by others, and promptly cut off damaged or scrapped rope buckles to prevent misuse by others; Do not buy slings made by non-standard manufacturers.

Using hemp rope as a safety rope, due to its much lower load-bearing capacity than steel wire rope and its susceptibility to damage during daily storage and use, reduces tension. Therefore, using hemp rope as a safety rope does not have a safety effect, but instead creates psychological dependence and causes accidents.

There is no warning zone for lifting large items, and there is no safety warning zone or safety guardian set up in the dangerous area below the high-altitude operation, resulting in others entering the dangerous area without knowing the situation and causing accidents.
Improper consideration of the brake lever when lifting heavy objects with the long arm of a crane. When lifting heavy objects with the long arm of a crane, the perpendicular line between the pole head and the center of gravity of the object changes due to the "braking" of the crane arm force. If the lifting rod is not adjusted correctly, the lifted object will immediately move. If the operator does not take evasive measures (especially in the air), it may be an accident.

When two vehicles are lifted simultaneously, it is not allowed to weigh one item. Due to the changing center of gravity during rotation, if the calculation is not accurate, it can easily lead to overloading and instability of a crane, which not only threatens people's safety but also causes huge mechanical and economic losses. There are profound lessons in history that require special attention from construction technicians.

Working in hazardous areas, such as working on overhead crane beams, without sufficient prior contact and confirmation with the crane driver, or due to errors made by the crane driver during busy work, resulting in misoperation, and failure to take measures such as hanging warning flags, warning lights, and setting up stalls, causing the crane to suddenly appear, construction personnel cannot avoid accidents. Insufficient consideration of climate impacts. Reliable sealing measures were not taken for lifting equipment such as gantry cranes that were not installed outdoors. The hanging hook of the tower crane in use has not been raised to a safe position or anchored to a lighter weight, which may cause accidents when a gust of wind blows. Sometimes, a burst of rainstorm suddenly shortens the power supply, and it is too late to lift the hook. So it is important to develop good construction habits. In addition, when lifting large items in windy weather, the influence factors of wind load on the crane must be considered. Do not operate when there is danger or when the wind exceeds safety regulations.