核心备件自主可控！山东港口日照港卸船机臂架螺旋国产化改造成功

Core Insights - Shandong Port Rizhao Port successfully completed the domestic transformation of key components of the spiral unloader, achieving self-control of core spare parts [1][2] - The project utilized advanced technologies such as high-precision 3D scanning and laser ranging to overcome challenges in measuring the dimensions of the spiral arm [1] - The collaboration between Rizhao Port and Shandong Luhai Equipment Group demonstrated efficient teamwork, completing the design and manufacturing of the unloader's spiral arm in just 45 days [2] Technical Achievements - The technical innovation center developed a specialized coaxiality testing platform to address issues of dimensional deviation and coaxiality during the installation phase [2] - After eight rounds of precise disassembly and adjustment, the dynamic running coaxiality was stabilized within the design standard of ≤0.1mm/m, resulting in smoother operation compared to pre-modification [2] - The cost savings from replacing a single spare part compared to imported original parts exceeded 500,000 yuan, showcasing significant economic benefits [2] Industry Implications - The successful domestic production of critical components establishes a complete technical path for domestic substitution and an efficient supply chain collaboration model [2] - This transformation supports the high-quality development of the port industry by providing a replicable technical solution for equipment modification [2]