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Xin Dafang’s independently developed self-adjustable 155-ton tire-type girder launcher will support India’s metro construction.
Xin Dafang News: Recently, two self-service, cross-span 155-ton tire-mounted girder erectors independently developed by Xin Dafang have successfully arrived in India. Following remote guidance for installation, the main frame of the first unit has already been erected, and work is now underway on the electrical and hydraulic systems. Upon completion of commissioning, the equipment will be deployed for construction on Line 4 of the Mumbai Metro, India’s largest urban rail project.
Typical tire-erection cranes have a fixed span and vertically aligned columns. However, this equipment, as specified by the project, features a curved-leg design that is wider at the top and narrower at the bottom, with the capability of automatic span adjustment: during operation, the upper span is 24 meters and the lower span is 16 meters; when work is suspended, the upper span reduces to 16 meters and the lower span to 8 meters. In essence, this is a “Transformers”-like machine—capable of automatically opening and closing, with its span dynamically adjustable from 24 meters down to 16 meters and then back up to 24 meters. Without the need for additional auxiliary equipment, it completes these span adjustments efficiently, smoothly, and safely, fully meeting the Indian client’s requirement of changing the span once per day.
This design is an original innovation of Xindafang; currently, no similar equipment or technology exists in China. It can thus be said that this technology fills a domestic gap and is now undergoing patent application. This equipment serves as a gateway for entering the Indian market, and several pieces of machinery—including bridge erectors and girder transporters—have already been successively deployed in India’s high-speed rail and metro projects.
Keywords:
New Dafang, beam-lifting machine, India
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