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Internationally Advanced | The Major Science and Technology Project of Zhengzhou City Undertaken by Xin Dafang Has Successfully Passed the Results Appraisal
Two Results—“Research and Application of the DF30-120 Intelligent All-Prefabricated Column-Beam Integrated Bridge Erection Machine” and “Research and Application of the DLT155 Self-Servicing Variable-Span Leg Polygonal Tire-Type Girder Erection Machine”—undertaken by Xindafang under the Zhengzhou Major Science and Technology Innovation Special Project “Complete Sets of Green Construction Equipment, Management, and Industrialization for Prefabricated Bridges Based on 5G” have successfully passed the appraisal of Results.
The results appraisal meeting invited nine renowned experts from the industry to form an appraisal committee, including Miao Jinqi, Li Jian, and Wang Yanting from the Henan Provincial Society of Mechanical Engineering; Zou Shengyong from CITIC Heavy Industries Co., Ltd.; Ma Wei from the Luoyang Municipal Society of Mechanical Engineering; Gao Jianshe from Zhengzhou University; Li Jishun from the Key Laboratory of Mechanical Design and Transmission Systems of Henan Province; Feng Xianzhang from the Zhengzhou Institute of Aeronautical Industry Management; and Hao Manchao from the Zhengzhou Research Institute of Machinery, to conduct the appraisal of the research outcomes.
Sun Cunliang, Deputy General Manager of the company, Chen Deli, Deputy Chief Engineer, Zhao Fangxing, Deputy Chief Engineer, and the project team attended the appraisal meeting and presented their defense. The experts on the appraisal committee listened to the project’s research progress and technical report, reviewed user feedback reports and novelty search reports, examined the relevant documentation, and re-verified the key technical specifications.
After questioning and discussion, the appraisal committee unanimously agreed that the two Results are highly innovative and possess independent intellectual property rights, and approved their appraisal, deeming that their overall technology has reached the internationally advanced level.
The DF30/120 intelligent, fully prefabricated column–beam integrated bridge erector is a high-tech, integrated “mechanical–electrical–hydraulic” system designed for the lifting and splicing of precast piers, cap beams, and entire bridge superstructures during bridge construction. It can be used to install piers and cap beams and is suitable for erecting and installing box girders and double-T girders with spans of 30 meters or less; it is also applicable to the erection of standard highway girders. By integrating lifting, positioning, and installation functions into a single machine, it significantly reduces labor and material inputs while enhancing construction efficiency and quality.
The DLT155 self-adjusting, multi-segment, tire-mounted girder launcher innovates both the main frame structure that enables in-span folding of the outriggers and the design of the multi-segment outrigger system for self-adjustable span. Its compact structure reduces the equipment’s footprint, achieves lightweighting for heavy-duty machinery, adapts to extremely complex operating conditions, and minimizes disruption to traffic. Unlike conventional gantry crane outriggers with a straight-up-and-down configuration, the DLT155’s multi-segment outriggers feature a downward-folded section at the base, creating sufficient clearance beneath the folded portion to ensure unobstructed vehicle passage. Moreover, the machine can rapidly adjust its span without requiring auxiliary equipment. To date, no other comparable products are available domestically; the DLT155 has already been deployed on India’s first high-speed railway, where it has performed reliably and earned high customer satisfaction.
The commercialization of research outcomes has facilitated the application of new technologies, processes, and products, thereby further advancing technological innovation and industrialization in the specialized equipment sector. Looking ahead, Xindafang will continue to deepen its commitment to scientific and technological innovation, leveraging such innovation to foster the development of new, high-quality productive forces and make even greater contributions to China’s specialized equipment industry.
Keywords:
Zhengzhou Xindafang, Integrated Pier-Girder Bridge Erection Machine
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