The connection strength of the connecting ring belt comes first from the mechanical properties of the polyurethane material itself. This material has high tensile strength and tear strength, dense molecular structure and excellent toughness. It can disperse tension through elastic deformation of molecular chains when subjected to force, avoiding fracture caused by local stress concentration. Compared with ordinary rubber materials, polyurethane can withstand greater tension under the same cross-sectional area, providing a solid foundation strength for the connecting ring belt, making it less likely to fail due to excessive tension during transmission.
The design of the connection structure has a decisive influence on strength. High-quality connecting ring belts use one-piece molding or high-frequency welding technology to form a seamless connection between the ring belt and the connecting ring belt body, eliminating the gaps or weak points that may exist in traditional mechanical connections. This integrated structure allows tension to be evenly transmitted to the entire ring belt, avoiding the problem of excessive local force. Some ring belts will also have built-in reinforcing fibers in the connection parts. The fibers are closely combined with the polyurethane material, which improves the overall tensile resistance like a skeleton and further strengthens the connection strength.
In terms of the performance of bearing tension, the connecting ring belt can adapt to load changes under various working conditions. When the connecting ring belt transmits power, the connecting ring belt needs to withstand periodic tension fluctuations along with the belt body. Its elastic modulus matches the belt body well, and it can expand and contract synchronously, reducing the additional stress caused by deformation differences. Even in the case of instantaneous overload, the ring belt can absorb the impact force with the toughness of polyurethane, avoiding the breakage caused by the sudden peak of tension. This buffering ability allows it to maintain stable connection performance in complex transmission environments.
Fracture resistance is also reflected in the resistance to fatigue damage. During long-term operation, the connecting ring belt will repeatedly experience the stretching and release of tension. Ordinary connection methods are prone to cracks due to fatigue accumulation, while polyurethane materials have excellent fatigue resistance and the molecular structure is not easily degraded due to repeated deformation. At the same time, the surface of the connection part is specially treated to be smooth and burr-free, which reduces stress concentration points and the risk of fatigue fracture, so that the ring belt can still maintain a high connection strength during long-term use.
There are differences in the tension range that connecting ring belts of different specifications can withstand, which is related to the width, thickness and reinforcement method of the ring belt. Wide belts can disperse more tension due to their large contact area and are suitable for high-load transmission; narrow belts are flexible in light-load scenarios and can also maintain stable connections. Regardless of the specifications, their design is based on a safety factor that exceeds the tension required for actual working conditions, ensuring that there is sufficient strength margin in normal use and that it is not easy to break.
The strength stability of the connecting ring belt is less affected by environmental factors. In high-temperature environments, the heat resistance of polyurethane materials makes its molecular structure less likely to soften, and the connection strength decreases slightly; in low-temperature environments, the material will not become brittle and reduce its toughness, and it can still maintain good tensile strength. At the same time, it has strong tolerance to chemical substances such as grease and solvents, and will not deteriorate due to contact with these substances, ensuring that the connection strength is not significantly affected in a variety of environments.
In actual applications, the non-breakage characteristics of the connecting ring belt significantly improve the reliability of the connecting ring belt. In scenarios such as automated production lines and precision transmission equipment, once the connection breaks, it will cause downtime and losses, and the high strength and fracture resistance of the polyurethane connecting ring belt can reduce the occurrence of such failures. Its stable connection performance can also ensure the transmission accuracy of the connecting ring belt, avoid belt slippage or displacement caused by loose connection, and indirectly improve the overall operating efficiency of the equipment.
