Key Points of Rapid Deployment and Special Condition Operations of Cranes in Emergency Rescue

At emergency rescue sites, cranes are core equipment for clearing life-saving channels and moving hazardous heavy objects. Their deployment efficiency and operational capabilities under special conditions directly affect the progress of rescue operations and personnel safety. When faced with complex scenarios such as ruins, confined spaces, and adverse weather, it is necessary to achieve rapid response through scientific strategies, address unconventional challenges with professional skills, and strictly adhere to safety red lines.

        The key to rapid deployment lies in 'anticipating in advance and ensuring efficient coordination', compressing preparation time while guaranteeing safety. Before the rescue team arrives, drone reconnaissance and on-site personnel exploration should be conducted to clearly determine the weight of the rescue target, the ground load-bearing capacity at the site, and surrounding obstacles (such as high-voltage lines and collapsed components). Crane parking positions, working radius, and entry/exit routes should be planned in advance to avoid repeated adjustments upon arrival. Upon arrival, a solid and open area should be prioritized as the operation point. If the ground is soft, steel plates or road base boxes should be laid immediately to increase the contact area and prevent equipment from sinking. Meanwhile, site clearance, warning zone setup, and equipment inspection should be carried out simultaneously. Operators should inspect critical components such as braking systems, hydraulic devices, steel ropes, and moment limiters according to standardized procedures. A 'division of labor and collaboration' model can be adopted, where one person checks the machinery and another connects the power supply and coordinates the warning zone, thereby maximizing the shortening of the preparation cycle from arrival to operation.

        Emergency rescue sites often face unconventional working conditions and require targeted adjustments to operational strategies to ensure both efficiency and safety.

In the rescue of ruins, the core challenge lies in unknown loads and unstable structures. When doing homework, it is necessary to first test the lifting with a small amplitude and low speed, perceive the weight and connection status of the components, and avoid forced lifting causing secondary collapse; For large or irregular debris components, multi-point lifting combined with balanced beams is used to ensure uniform force distribution and prevent component tilting and sliding; At the same time, closely observe the environment around the boom, avoid unstable walls or structures, and prevent collision risks.

        When working in a confined space, limited space and obstructed visibility are the main challenges. Priority should be given to using off-road tire cranes or on-board cranes with higher flexibility to reduce dependence on the site; The operator needs to closely cooperate with the dedicated command on the ground, accurately control the position of the hook with "small amplitude, slow speed" through intercom or gesture signals, and if necessary, use cameras, laser rangefinders and other equipment to compensate for blind spots and ensure the accuracy of lifting.

        In severe weather conditions, strong winds, rain, and snow can reduce equipment stability and operational visibility. Strict adherence to meteorological restrictions is required, and operations are prohibited when wind speeds reach level 6 or above; In rainy and snowy weather, it is necessary to clean up the accumulated snow and water on the equipment in a timely manner. When working on frozen ground, anti slip pads should be placed under the support legs, and if necessary, additional weights should be added to improve the stability of the entire machine; At the same time, strengthen signal communication and adopt clearer command methods such as fluorescent gestures and light signals to avoid interference with intercom signals and misjudgment of instructions.

        When working near high-voltage lines, the risk of electric shock is extremely high, and a safe distance must be strictly observed - maintain a distance of at least 5 meters from high-voltage lines of 10kV and below, and it is strictly prohibited to operate within the safe distance. Clear warning signs should be set up on site, and dedicated personnel should be arranged to monitor the position of the crane arm in real time, reminding operators to avoid risks; Even if insulation sleeves are installed on the top of the boom, they cannot replace the core requirement of safe distance, and electric shock prevention should always be the primary safety criterion.

        Safety is always the bottom line for emergency lifting under any operating conditions. The 'Ten No-Lifts' principle must be strictly observed, including refusing to lift when signals are unclear, weights are unknown, loads are skewed or pulled at an angle, or lifting slings do not meet regulations. On-site, there must be one experienced full-time commander, and all operation instructions must be issued by this person to ensure coordination between operators and ground rescue personnel. During operations, risks must be continuously and dynamically assessed. If structural abnormal noises, equipment malfunctions, or other such situations are discovered, operations must be immediately stopped. After re-evaluating the situation, actions can be taken again. A rigorous attitude is required to ensure the safety of rescue personnel and equipment.