The Dongfeng 7G diesel locomotive (DF7G) is one of the diesel locomotives used by China Railways. Dongfeng DF7G is mainly used for marshalling and shunting operations in large and medium marshalling stations, large industrial and mining enterprises, and can also be used for small operation operations on main lines. Dongfeng DF7G locomotives are designed and manufactured by CSR Sifang Locomotive and Rolling Stock Co., Ltd. (Sifang Factory) and China CNR Beijing Erqi Locomotive Factory (Erqi Factory) respectively on the basis of Dongfeng 5 and Dongfeng 7 shunting locomotives . In addition, on the basis of Dongfeng DF7G locomotives, the No. 2 Factory has developed prototype locomotives for the Qinghai-Tibet Railway, port-type locomotives for the Erlianhot Railway Port, and a variety of export-type locomotives. 👉If you like it, please follow this channel❤️: 🎥Youtube: https://youtube.com/channel/UCeTSucGiJ8Cxus712JtHa0w?sub_confirmation=1 Gear used GoPro Hero8: https://amzn.to/3w4YuSJ CSR Group Since 2001, CSR Sifang Locomotive and Rolling Stock Co., Ltd. has implemented the principle of “universal, serialization, modularization, and standardization” of shunting locomotives by the Ministry of Railways of the People’s Republic of China, and based on the Dongfeng 5 (modified) locomotive. Developed the Dongfeng DF7G locomotive. The technical solutions of each system of the Dongfeng DF7G locomotive, including the car body structure and running gear, are basically the same as those of the Dongfeng 5 (modified) locomotive, and many parts can be interchanged. The locomotive is equipped with a 12V240ZJ diesel engine with a loading power of 2000 kilowatts; it is equipped with a JF208A synchronous traction generator and a ZQDR-410, ZD124 or ZD109J DC traction motor. The auxiliary system is driven by an alternator. The locomotive control system adopts Japanese OMRON Programmable Logic Controller (PLC), which has the functions of fault diagnosis and detection. The locomotive has a nominal power of 1,610 kilowatts and a minimum curve radius of 138 meters The first Dongfeng DF7G locomotive completed trial production in December 2002 and participated in the first new locomotive quality exhibition held by the Chinese Ministry of Railways in January 2003. After the Dongfeng DF7G locomotive has completed various required tests, Sifang Locomotive and Rolling Stock Co., Ltd. shall, in accordance with the supervision standards of the Ministry of Railways on newly-built locomotives, and the engineering work of locomotive pipelines and lines, and the production process of "painting before assembly", Completed the construction drawings of the locomotive. In the second half of 2003, the Dongfeng DF7G locomotive of Sifang Locomotive and Rolling Stock Co., Ltd. began to be put into mass production, and it was included in the designated tender for procurement by the Chinese Ministry of Railways. As of the end of 2006, Sifang Locomotive and Rolling Stock Co., Ltd. has produced a total of 90 Dongfeng DF7G locomotives (0001～0090), with red and white paint on the body. In 2007, China South Locomotive Group integrated the diesel locomotive business of the group in accordance with the requirements of the overall development plan, and integrated the diesel locomotive products of Sifang Locomotive and Rolling Stock Company, including the technical drawings, production equipment, customer resources and after-sales of Dongfeng DF7G and Dongfeng 5 locomotives. Services were integrated and the business was transferred to CSR Qishuyan Locomotive Co., Ltd. as a whole. Since 2008, Qishuyan Company has continued to produce Dongfeng 7G locomotives. As of the beginning of 2020, a total of 36 units (0091-0126) have been produced. CNR Group China CNR Beijing Erqi Locomotive Factory (later restructured into Beijing Erqi Rail Transit Equipment Co., Ltd.) Since the Dongfeng 7 series shunting locomotive products have not been standardized, in order to meet the choices and requirements of different users, it is equivalent to redesigning new The model of the company has increased production costs and poor accessory versatility, which is also not conducive to the training and maintenance work of the application department. Therefore, in accordance with the requirements of the Ministry of Railways on the realization of "serialization, standardization, modularization, and informationization" of shunting locomotives, the Erqi Factory began to carry out modular design for Dongfeng 7 series locomotives in 2002, and successfully developed two types of Dongfeng locomotives in 2003. The 7 series of modular locomotives are Dongfeng 7C modular locomotives and Dongfeng 7G modular locomotives. The former is mainly used by off-road factory and mining enterprise users, while the latter is mainly used for national railway in-road bidding. #DongfengDF7G #Dongfenglocomotive #chinarailways

• published: 02 Jul 2021
• views: 1454