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CN203978290U 一种挖穴机弧形双刀钻头 失效 - 权利终止

  • 专利标题： 一种挖穴机弧形双刀钻头
  • 专利标题（英）： Arc-shaped double-blade drill bit of hole digger
  • 申请号： CN201420471554.5
    申请日： 2014-08-14
  • 公开(公告)号： CN203978290U
    公开(公告)日： 2014-12-03
  • 发明人: 许丽 , 谢正林 , 许建东 , 许丽英 , 许华美
  • 申请人： 许丽
  • 申请人地址： 福建省南平市顺昌县中山西路49号
  • 专利权人： 许丽
  • 当前专利权人： 许丽
  • 当前专利权人地址： 福建省南平市顺昌县中山西路49号
  • 主分类号： E21B10/42
  • IPC分类号： E21B10/42 ;  A01C5/04
一种挖穴机弧形双刀钻头
摘要：
一种挖穴机弧形双刀钻头，其结构具有两大特点：一是二块挖穴刀片是外宽内窄的弧形刀片，使刀片外沿加宽，大大提高刀片耐磨使用率；二是弧形双刀钻尖与无缝钢管钻杆构成可拆卸的螺纹连接，这样当刀片磨损后需换新时，能保留起土螺旋叶轮和无缝钢管钻杆，从而节省钻头损耗成本。本设计结构合理，就能实现刀片利用率提高了20倍以上，节省挖穴机钻头使用成本50％以上，具有很高的开发使用和推广价值。
摘要（英）：

An arc-shaped double-blade drill bit of a hole digger is structurally characterized in that two hole digging blades are arc-shaped blades which are wide outside and narrow inside, so that the outer edge of each blade is widened, and the abrasion-resisting use rate of the blades is greatly increased; the arc-shaped double-blade drill bit is in detachable threaded connection with a seamless steel tube drill rod, in this way, when the blades need to be replaced after being abraded, a soil elevating spiral impeller and the seamless steel tube drill rod can be reserved, and therefore the loss cost of the drill bit is saved. The arc-shaped double-blade drill bit is reasonable in designed structure, the use rate of the blade can be increased by over 20 times, the use cost of the drill bit of the hole digger is saved by over 50%, and therefore the arc-shaped double-blade drill bit has high development, utilization and popularization value.

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