Millions of IPs create science and technology talents to strengthen the country丨Deepen digital transformation to help build intelligent rail transit growth

At the end of 2021, the Ministry of Transport issued the "14th Five-Year Plan for Digital Transportation Development", proposing that transportation should be integrated with "digital" in all aspects. In recent years, CRRC has focused on digital transformation, built the fully open CRRC Industrial Internet and CRRC Big Data Center, promoted the digital transformation and intelligent transformation of enterprises in the industrial chain, and is committed to building an intelligent ecosystem for China's rail transportation equipment.

Digital transformation, in simple terms, means that companies use digital technology to reshape their business models, organizational structures, and corporate culture. So, how did digital transformation take root in CRRC Dalian?

First, CRRC Dalian Company has deepened the application of digital rapid design systems, accelerated the process of platform-based and modular product design based on configuration, and established a digital R&D system. It has promoted the construction of systems such as PHM, IETM, and CRM, and carried out MRO implementation based on PHM and maintenance MES to establish a digital service system. Based on the lean manufacturing platform and the SAP-PS module development project life cycle management system, it has established an operating management indicator system to provide data support for management decisions.

In addition, CRRC Dalian has also increased its investment in digital production and operation during the management process, deepened the construction of digital workshops and digital production lines, promoted the in-depth application of lean manufacturing platforms, improved quality management modules, and provided data support and decision-making basis for operation control. It is understood that CRRC Dalian has built a three-level organizational structure of branches and workstations to promote the rhythmic production of workstations; built 2 digital workshops and 16 digital production lines, with an MES coverage rate of 80% for the entire production line, and the "Bogie Smart Factory" project was selected for the first time in the list of national-level smart manufacturing demonstration factory projects.

Among them, the two-axle frame automatic welding production line of the bogie branch is a digital intelligent flexible welding production line built by CRRC Dalian Company to implement digital transformation and upgrading, and is an important milestone for the company to move towards intelligent manufacturing. It undertakes key processes such as the assembly and welding of the side beams and cross beams of the company's two-axle frame, realizing a gorgeous transformation from traditional manufacturing to intelligent manufacturing.

In addition, the production data dashboard on the large screen in the production command cockpit is the "eye" of the production line, which displays the important data and scenes of the normal operation of the production line. Employee attendance information, completion of the day's work, completion of the plan of each workstation on the production line, material distribution, production line environmental monitoring, energy consumption of digital equipment, production line abnormal situation statistics, production line quality ticket statistics, production line video monitoring, etc. are all available, so that the operation status of the production line can be seen at a glance. The display of digital twin technology in the current scenario makes people feel as if they are in a real production line, knowing every detail of the production line.

The RGV warehouse and AGV transport vehicles of the automatic logistics system are like the "blood" and "nerves" of the production line, each performing its own duties and working closely together. The RGV warehouse delivers the completed workpieces to each automatic welding station for welding, and automatically cools them after welding. While controlling the deformation of the workpieces, it also serves as a storage for work-in-progress between processes. The AGV transport vehicles deliver the materials needed for production to the line side area in advance according to the beat plan, and automatically recycle the empty pallets and return them to the material preparation area after the materials are used, ensuring the efficient operation of the production line.

The automatic welding station is the core of the production line. It adopts internationally advanced automatic welding technology and the industry's cutting-edge seven-axis equipment unit, with a welding accessibility rate of more than 90%. The dual-station layout allows one station to weld while another station receives and delivers materials, reducing the waiting time of the robot. The robot can weld continuously during the working cycle, with a higher utilization rate, which effectively ensures that the structure can be completed within the standard cycle. At the same time, the production line is also equipped with an overall dust removal and purification system, which effectively controls the indoor dust concentration at around 0.04mg/m³, greatly improving the working environment.

The MES central control system is like the "commander" of the production line. The automatic logistics system, automatic welding station and dust removal and purification system are all integrated and linked through the "commander", which receives the upstream MES plan and decomposes it in combination with process information, and schedules various equipment in the production line to interact and ensure orderly execution at the production site, demonstrating the powerful force of new quality productivity.

Industrial intelligence, digitalization and greening are important forces driving the rapid development of new quality productivity. On the road to developing new quality productivity, CRRC Dalian Company will insist on improving quality and efficiency through intelligent and digital construction, empowering with digital intelligence, laying a solid foundation for the company's new quality productivity, and laying a solid foundation for the long-term development of the enterprise.

Text: Xu Chaoren, CRRC Dalian Locomotive and Rolling Stock Co., Ltd.

Auditor: Fu Di, CRRC Dalian Locomotive and Rolling Stock Co., Ltd.