首页> 外国专利> bergborrkrona

bergborrkrona

机译:柏博克罗纳

摘要

A rock drill bit for percussive drilling includes a front face which has radially outer and inner portions. Fluid channels are disposed in the head portion in communication with the inner portion of the front face. The inner portion of the front face carries a plurality of front buttons. The outer portion comprises circumferentially spaced steel portions which are axially raised relative to the inner portion. Each raised portion carries one or two peripheral buttons located radially outwardly of an imaginary circle which intersects at least two of the front buttons and at least two of the flushing channels. The imaginary circle is arranged coaxially relative to the center axis.
机译:用于冲击钻的凿岩钻头包括具有径向外部和内部的正面。流体通道设置在头部中,与正面的内部连通。前面的内部带有多个前面的按钮。外部部分包括沿周向隔开的钢部分,该部分相对于内部部分轴向升高。每个凸起部分承载一个或两个外围按钮,该外围按钮位于假想圆的径向外侧,该假想圆与至少两个前按钮和至少两个冲洗通道相交。假想圆相对于中心轴同轴布置。

著录项

  • 公开/公告号SE0402283L

    专利类型

  • 公开/公告日2006-03-22

    原文格式PDF

  • 申请/专利权人 SANDVIK INTELLECTUAL PROPERTY;

    申请/专利号SE20040002283

  • 发明设计人 BJOERK FREDRIK;HADIN PER-OLA;

    申请日2004-09-21

  • 分类号E21Bnull/null;E21B10/38;E21B10/56;

  • 国家 SE

  • 入库时间 2022-08-21 21:37:05

相似文献

  • 专利
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号