The pulley block is a core component in the lifting industry. Through the ingenious combination of fixed pulleys and movable pulleys, it can not only change the direction of force but also achieve the function of lifting heavy objects with less effort. In scenarios such as port handling, bridge construction, and the installation of large equipment, pulley blocks are widely used, which can significantly reduce the demand for lifting power and make the hoisting operations of heavy goods easier to achieve. Its significance lies in enhancing operational efficiency and ensuring operational safety. A rationally configured pulley block not only reduces equipment wear but also improves the stability of the lifting system by distributing the load, which is a key guarantee for the successful completion of complex lifting tasks.