Hebei digital workshop uses RFID technology to realize intelligent truck repair

The staff of CRRC Shijiazhuang Company conducted the opening and closing test of the 120 type main valve on the 120 valve test bed. After the test bench is completed, the system automatically reads in the test data. The system can set test conditions. If the test data does not meet the relevant conditions, it will not be allowed to save the data.

On October 15, senior technician Li Bin was overhauling the brake valve at the brake station in the brake valve maintenance line of the digital workshop of the modern freight car coupling slow brake assembly of CRRC Shijiazhuang Vehicle Co., Ltd.

Li Bin picked up the handheld and scanned the RFID tag carrying the vehicle information on the brake valve. The system automatically included the vehicle number, car model and other brake accessories related information, and automatically imported the information into the company's information management system. He introduced that CRRC Shijiazhuang has integrated the information management system of China National Railway Group Co., Ltd. It only needs to scan the RFID tag, and the expenditure information of the brake valve and the hook and buffer components will be automatically entered into the information management system of the National Railway Group. Fast and accurate. "In the past, our tools were paper and pen. We had to copy valve information on paper every day, and then a dedicated person would enter it into the information management system of the National Railway Group." Li Bin said.

The predecessor of CRRC Shijiazhuang Company was the Zhengtai Railway Shijiazhuang Main Locomotive Factory, which was founded in 1905. It is currently one of the most powerful railway freight car manufacturing and repair bases in China. As the earliest industrial enterprise in Shijiazhuang City, CRRC Shijiazhuang Company has built and repaired more than 500,000 railway freight cars since its establishment, making great contributions to the national railway transportation industry. With the vigorous development of the digital economy today, this century-old factory is actively carrying out digital construction, striving to realize the intelligence and informationization of the entire process of R&D, procurement, manufacturing, logistics, and warehousing, and create a new digital management model that runs through modern truck manufacturing.

Li Yufei, director of the Information Technology Department of CRRC Shijiazhuang Company, said that in recent years, the company has done a lot of work in information construction. Only the business and management departments have introduced more than 60 information management systems. While promoting the development of related work, due to the data Without interconnection, the issue of "information islands" has become more prominent. To this end, they strengthened research and development, promoted the connection of data between various systems, and strived to promote efficiency and effectiveness.

在数字worksh等生产车间op for the slow brake assembly of modern trucks, CRRC Shijiazhuang has implemented the system integration of ERP system (Enterprise Resource Management System) and MES system (Manufacturing Station Execution System). Li Yufei introduced that they realized that the MES system reads planning information and planned material requisition information from the ERP system, and generated workshop-level operation plans based on the process route maintained by the MES system; at the same time, they realized the MES system information feedback to the ERP system, and the feedback information includes The vehicle location information, the reporting of production tasks, the generation of workshop material picking lists, and the confirmation of inbound and outbound orders, etc., have achieved remarkable results in improving truck maintenance, new production efficiency and product quality.

In terms of specific implementation, through the use of RFID technology in the production process, the staff can accurately know the specific location and planned start time of the vehicle, which improves the accuracy of production planning and the punctuality rate of logistics distribution. For example, the warehousing department can carry out corresponding material procurement and vehicle distribution based on real-time production data to realize production-driven distribution, and provide data support for solving the logistics supply problem of "people waiting for cars, cars waiting for materials". The production demander and the material distributor can rely on real-time data to realize timely feedback and interaction of information between the two parties and realize dynamic optimization of material distribution. Through the RFID tag reading and writing, it can also automatically collect and summarize information such as the precise time, location, and participating personnel of the vehicle body during the circulation process of the maintenance vehicle body, so as to realize the real-time tracking and supervision of the entire production process of the vehicle body maintenance. "That is, you can grasp in real time what is in progress, when and where, and what operations are done by who." Li Yufei said.

Through real-time monitoring of the production process, you can also grasp the current production schedule implementation in real time, discover production bottlenecks and waste in time, identify production sudden and change conditions such as machine failures, production sequence adjustments, and make timely production planning and scheduling accordingly. Re-adjust and improve the production process to achieve stable balance and closed-loop management of the entire production process.

Before the implementation of the integration of the ERP system and the MES system, CRRC Shijiazhuang’s trucks had a total repair time of 7.49 days. After the implementation, the total repair time was 5.46 days, and the production efficiency increased by 27%.

At present, CRRC Shijiazhuang Company inspects and repairs about 15,000 hooks, brakes and 15,000 trucks every year, and has the capacity to build 4,000 trucks every year. In the process of maintenance and production, a large amount of data will be accumulated, and the in-depth research and utilization of these data will greatly promote the intelligent production of the railway truck maintenance industry, improve the efficiency of truck maintenance, new production, and improve product quality. .

CRRC石家庄新模式的实现of intelligent truck repair and production based on the MES system is the first in the CRRC industry in China and has a good demonstration. The company’s deputy general manager Zhang Jianxin introduced that they will further increase the application of automated intelligent manufacturing equipment, online production and testing technologies, and strive to open up the entire supply chain management of the enterprise, comprehensively improve product quality, increase production efficiency, shorten research and development cycles, and reduce production costs , To make due contributions to increasing the volume of railway transportation and supporting the implementation of the "Round-to-Rail" strategy.