Yechao Company has been specializing in the underground engineering equipment industry for over 10 years. Its business operations mainly involve products and services such as new energy electric locomotives, new energy batteries, graphene supercapacitors, shield machine main drives, shield machine cutterhead frequency conversion control systems, electrical control systems, shield machine remanufacturing, and shield machine component maintenance.
With the accumulation of industry reputation, Yechao has been committed to the research and development of domestic standardization of shield machine components. In addition to establishing a design team to develop shield machine main drive and related control technologies, it has also been engaged in shield machine maintenance and remanufacturing services for a long time. It has completed more than 60 different types of shield machine maintenance, renovation, commissioning and maintenance work, helping the company's customers improve the comprehensive utilization rate of shield machines.
At present, the maintenance performance of the company's shield tunneling machines mainly includes internationally renowned brands such as Herrenknecht, Mitsubishi, Hitachi, Kawasaki, Komatsu, and Lovat, which are being applied in engineering projects in Shanghai, Guangzhou, Shenzhen, Hangzhou, Beijing, Changsha, Zhengzhou, Chengdu, and other places.
In addition to undertaking the routine disassembly and assembly of shield machine equipment for clients, the Underground Engineering Equipment Division also leverages its long-accumulated expertise in specialized shield technology to provide disassembly, assembly, and on-site commissioning services for various special-purpose shield machine models, as required by market demands.
The division is fully capable of providing comprehensive services for all types of shield machines, ranging from disassembly and removal inside the tunnel to hoisting out major components such as the cutterhead, trams, screw conveyors, segment erectors, propulsion and articulation cylinders, and main drives.
With its superior technology and excellent service quality, Ye Chao Company has gained widespread recognition from cooperative clients and established strong partnerships with multiple large state-owned engineering construction enterprises.
Currently, the Underground Engineering Equipment Division can provide a complete set of shield machine accessories tailored to customer needs, including but not limited to: main bearings, cutterhead motors/reducers, main drive seals, articulated seals, cutterhead frequency conversion systems, belt conveyors, and slurry circulation systems.
The electric locomotives provided by the Underground Engineering Equipment Division of Yechao will serve as the power hub for underground engineering traction trains, pulling various specialized vehicles for operation.
At present, it has been widely used in engineering projects such as subway tunnels and urban comprehensive pipe galleries, providing transportation services for the waste soil, mortar, and pipe segments generated during shield tunneling.
The structural composition of an electric locomotive includes the body, braking system, electrical system, transmission system, and running system.
- battery renovation
- Control system renovation
- Development of Remote Information Management Platform
- 4G/5G network installation inside the tunnel
- European series electric locomotive frequency converter
- Japanese made series electric locomotive frequency converter
The Underground Engineering Equipment Division can provide comprehensive services such as design, manufacturing, commissioning, and technical support for the main system of shield tunneling machines according to customer requirements.
And various corresponding accessories can be provided for shield tunneling machines, including shield tunneling machine main bearings, reducers, motors, main drive seals, as well as screw machine and hydraulic system modifications.
Yechao has accumulated rich technology and experience, and can provide various types of shield machine maintenance, upkeep, remanufacturing, dismantling/assembling, debugging and other services. Through similar "remanufacturing process" technology, customers' almost scrapped shield machines can be "resurrected" on site. It can be said that Yechao's "remanufacturing process" is an effective extension of the shield machine manufacturing industry chain, an important component of advanced manufacturing and green manufacturing of large-scale engineering equipment, and one of the best ways to achieve efficient resource recycling.
After years of operation, Yechao Electric has established long-term cooperation with China Railway Equipment, China Railway First Bureau, China Railway Second Bureau, China Railway Fourth Bureau, China Railway Electrification Bureau, China Communications Tianhe, China Communications Tunnel Bureau, China Railway 15th Bureau, Hongrun Construction, Shanghai Shentong Metro, Shanghai Infrastructure Company and other units, and has gained a good reputation from customers.