Although flexible lifting belts and flat lifting belts are both lifting tools, there are significant differences in their structural design: the former has a columnar structure, while the latter has a flat shape. However, both adopt a ring eye structure design, the core purpose of which is to optimize the connection effect with lifting components such as hooks and rings, and improve the stability during operation.

In practical operations, there is often a question of whether it is possible to increase the length of the operation by directly connecting two types of lifting belts, and the answer is usually negative. The key reason why the two cannot be directly connected is the mismatch between the structure and the force design: the flat lifting belt has a wider force surface, while the flexible lifting belt has a column shaped concentrated force surface. When directly connected, the force distribution of the two types of lifting belts is greatly different, which can cause one of them to bear much more force than expected in the design, greatly weakening its original strength and easily causing safety hazards such as fracture and slippage.

If the homework scenario indeed requires the combination of two types of lifting belts to extend the length, indirect connection is a safer choice. At this point, specialized connectors such as lifting rings and shackles need to be used to connect with the eyelets of two types of lifting belts, forming a stable composite structure. Specialized connectors can effectively disperse and transmit forces, avoiding damage to the two types of lifting belts due to uneven direct contact forces, and maximizing the protection of their respective strength performance without being affected.

It should be noted that the selection and use of connectors and related accessories must strictly comply with national and industry safety standards (such as GB/T 25854 "Synthetic Fiber Lifting Belts for Lifting Appliances", etc.). Before formal hoisting, it is necessary to verify one by one:

Whether the rated load of the connecting piece matches the rated lifting capacity of the lifting belt and is not lower than the actual weight of the lifted object;

Is the size of the connecting piece and the eye of the lifting belt compatible to avoid loose connections due to size discrepancies;

All components (including lifting straps, connectors) must be checked for wear, cracks, aging, and other damages to ensure no safety defects.

Only by meeting the above safety conditions can the safe connection between flexible lifting belts and flat lifting belts be achieved, ensuring the overall safety of lifting operations.