Some Tips on the Balance of Truck-Mounted Cranes

The operating site for the truck-mounted crane must be level, firm, and reliable. In cases where the soil layer is soft, it is imperative to undertake compaction and reinforcement measures in advance. If necessary, sleepers, roadbeds, or thick steel plate tracks should be laid beneath the traveling components. A stable and even operating surface is crucial to ensure the uniform distribution of the vehicle’s weight and the stability of the crane during operation. Uneven or unstable ground can lead to imbalances and increase the risk of accidents.

When lifting vertical and large components, it is of paramount importance to ascertain whether the weight and the binding are reliable. It is strictly prohibited to lift goods with unknown weight or insecure bindings to prevent the boom from suffering damage or breaking. Accurate knowledge of the weight and proper securing of the load are fundamental for safe lifting operations. Any uncertainty or instability in these aspects can pose significant risks to both the equipment and the surrounding environment.

During the lifting process, the sling must remain vertical and should not be lifted diagonally beyond the slewing radius of the crane. This is to avoid overloading and potential slipping or breaking of the wire rope, which could result in the loss of stability of the crane. In the case of lifting heavy goods, a traction rope must be set up. When the crane is in a vertical position, the lifting, lowering, and slewing of the boom must be smooth and stable, without any oscillations in the air. Simultaneously, efforts should be made to avoid emergency braking or impact vibrations and other similar phenomena. If reliable measures cannot be implemented, the lifting operation should not proceed. The truck-mounted crane is strictly prohibited from overloading during lifting to prevent accelerated wear of mechanical components or the risk of the vehicle tipping over. Overloading not only places excessive stress on the crane’s structure and components but also significantly compromises the stability and safety of the entire operation.

The truck-mounted crane should strive to avoid full-load usage. It is strictly prohibited for the crane to perform both lifting and slewing actions simultaneously. This is because uneven road conditions or inertia can potentially cause the crane to be overloaded, thereby increasing the risk of a rollover accident. If the lifted goods need to be moved over a short distance, they should be turned to the front of the crane. The goods should not be elevated more than 50 centimeters above the ground. The rope should be firmly held to prevent swinging, and the movement should be carried out slowly and steadily. Careful control and precise operation are necessary to ensure the safety and stability of the load during these short-distance movements.

When two truck-mounted cranes are conducting lifting operations simultaneously, a safe distance of more than five meters should be maintained between the goods being lifted by the cranes to prevent collision incidents. This ensures that there is sufficient space for each crane to operate independently without interference or the risk of contact between the lifted loads. Adequate separation helps to minimize the potential for accidents and damage resulting from the interaction of the two cranes’ working ranges.

When the truck-mounted crane is undertaking the lifting operation, there should be dedicated professional personnel responsible for the command work. The cooperation between the operating personnel of the truck-mounted crane and the commander needs to be seamless. The commander’s signals, whether in the form of gestures or language, should be familiar and clearly understood by the operating personnel. Clear and effective communication is essential for ensuring that the lifting operation proceeds smoothly and safely, with all parties involved being in sync and aware of the specific instructions and requirements at each stage of the operation.