Efficient and Stable, Building on Green Foundations! Sunward SWDM430E Range-Exte
October 21,2026
Recently at the construction site of the Jiashan connecting line of the Huhang Expressway, Sunward's SWDM430E range-extended electric rotary drilling rig has been operating with high efficiency and stability. It drills fast, forms continuous boreholes, and delivers consistent quality, using its outstanding on-site performance to lay a solid underground foundation for this key bridge node.
The Jiashan connecting line of the Huhang Expressway is a key expressway project in Zhejiang Province and one of the "three elevated roads" within Jiashan's "three elevated roads and four railways" plan. Its main line spans 20.63 km and includes more than ten bridges, mostly super-large structures, with a large volume of pile foundations concentrated in a tight construction window. The piles are designed with a bore diameter of 1.8 m and a depth of 80-100 m; the interlayered clay and silty-sand geology demands high borehole accuracy, while the approaching deadline also requires fast pile-construction efficiency.
Sunward's SWDM430E range-extended electric rotary drilling rig delivers excellent performance. The machine has run for nearly 800 consecutive hours with zero breakdowns to date, averaging about 16 operating hours per day and 72 kWh per hour. Average boring time per pile has been cut to 7 hours, improving construction efficiency by about 23% compared with a same-class diesel rotary drilling rig-a high-efficiency, stable performance highly recognized by the project owner.
Energy cost is another highlight: low consumption brings tangible cumulative savings. In plugged-in mode, the SWDM430E cuts per-pile energy cost by 75% versus a same-class diesel rig, saving more than 4,000 yuan in daily energy expenses.
The SWDM430E uses direct motor drive control for immediate, responsive power transmission. Multi-motor speed and torque dual closed-loop high-precision synchronous control keeps drilling smooth and even with lower mechanical shock. Combined with its large-triangle structure and forward-folding mast design, the machine offers excellent overall stability and minimal operating sway, better guaranteeing borehole verticality and diameter accuracy-ideal for projects with the highest demands on borehole quality.
Precise in quality, fast in efficiency, economical in energy, and reliable in operation. Sunward's full range of electric rotary drilling rigs adopts key core technologies such as multi-motor synchronous control and sudden-load motor buffering control, which effectively reduce vibration and impact loads during construction and extend the life of the power head, drill rod, and tooling, supporting more controllable whole-lifecycle equipment costs.
From the cast-in-place piles underground to the future Huhang transportation artery, Sunward's SWDM430E-with its stable and reliable performance, efficient operation, and green low-carbon construction approach-consolidates the foundation of regional infrastructure.
Looking ahead, Sunward will continue to deepen its electrification, intelligentization, and green development direction, drive continuous upgrading of key technologies, and contribute to the high-quality construction of national infrastructure with more efficient, reliable, and greener equipment.
Source : www.51cm.org
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