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The reconstruction tasks of the two subway shields exported to India by Hudong Heavy Machinery Co., Ltd. will be completed in the near future. Among them, the first reconstruction task was completed 9 days ahead of schedule, delivered on July 28, and will be installed in Delhi, India in October; the second will be delivered soon. It is reported that this is the first time that Hudong Heavy Machinery's subway shield products have gone abroad, and it is also a major breakthrough for the company in the non-ship sector.
The two subway shields are the extra equipment in the construction of the Shanghai Metro. After the renovation, they will be used for subway tunneling in the Delhi area of ​​India. After a large amount of research, the owner finally selected Hudong Heavy Machinery as a partner by Shanghai Metro Equipment Engineering Co., Ltd.
The newly-constructed subway shield is earth-pressure balanced with a power of 1000 kW and the shield diameter is expanded from 6340 mm to 6410 mm before the transformation. According to reports, the transformation of the subway shield is more difficult than the manufacture of the new subway shield. First, the time for this mission is tight. Until the first half of June, the technical feasibility of the design side has not been solved, and the technical documents such as the design drawings, modification drawings and modification process plans of the subway shield structural parts have not been finalized, which makes the entire modification operation cycle compressed very short. Second, the transformation is difficult. The modified subway shield is not a product of Hudong Heavy Machinery. The drawings and technical documents are not complete. It involves many technical problems such as mechanical, hydraulic, pneumatic, electrical, lifting and parts processing, assembly and commissioning of the subway shield. The third is to rebuild the task. In the transformation of the subway shield, most of the original parts need to be dismantled, and new parts must be remanufactured and installed, and the workload exceeds the estimation before the task is undertaken. To this end, Hudong Heavy Machinery is anxious for the owners, relying on their strong technical strength and long-term production of various types of shields of rich experience, careful deployment, scientific arrangements, adhere to the principle of safety first, quality first, overcome One after another technical difficulties, the entire transformation process was promoted, and the first subway shield reconstruction project was completed ahead of time and passed the acceptance once, which won the full affirmation and praise of the owners.