Analysis of Remanufacturing Design of Hitachi Shield Machine Fluid System

This article describes the remanufacturing design of the foam system, grouting system, and propulsion system of the shield tunneling machine manufactured by Tianye Tonglian in 2010. The above three systems are the original equipment of the old machine and can be adapted to the new after remanufacturing design. Geological and new segment specifi cations, through the detection, classifi cation, and utilization of old parts, the new purchase cost can be saved to the greatest extent, and the functional requirements can be met. By upgrading the design, the shield machine foam system realizes the function of "single port, single tube, single pump, and single control", which is also the latest design requirement in the industry. In addition, the injection volume of the grouting system after remanufacturing is doubled, and the grouting sealing performance is better. The capability of the propulsion system has been improved, while preventing the risk of "stepping on the seam" of the segment. Through the design of shield machine remanufacturing, energy and cost are fully saved, and at the same time, the working capacity of the original shield machine is improved.