重达12t,高1m,直径3m的超大钻斗,近日由三一北京桩机工法研究院研制成功,引发业内关注。在国内旋挖钻具领域,该钻斗居领先地位,其独特的箱型结构设计也已申报国家专利。三一研制超大钻斗的初衷要追溯到重庆永川长江大桥的建设。据了解,永川长江大 Weighing 12t, 1m high, 3m diameter drill large, recently by the Sany Pekingear Method Research Institute successfully developed, triggering industry concerns. In the field of domestic rotary drilling, the drill pipe ranks the leading position, and its unique box structure design has also been declared a national patent. The original intention of the Sany development oversized drilling rig dates back to the construction of Chongqing Yongchuan Yangtze River Bridge. It is understood that Yongchuan Yangtze River