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发明公开
CN105927171A 一种防止钻机掉钻钻杆专用卡 无效 - 撤回

  • 专利标题： 一种防止钻机掉钻钻杆专用卡
  • 专利标题（英）： Special drill rod clamp for preventing drilling rig drill rod from dropping
  • 申请号： CN201610425654.8
    申请日： 2016-06-14
  • 公开(公告)号： CN105927171A
    公开(公告)日： 2016-09-07
  • 发明人: 张安宁 , 侯克邦
  • 申请人： 安徽理工大学
  • 申请人地址： 安徽省淮南市舜耕中路168号
  • 专利权人： 安徽理工大学
  • 当前专利权人： 安徽理工大学
  • 当前专利权人地址： 安徽省淮南市舜耕中路168号
  • 主分类号： E21B19/10
  • IPC分类号： E21B19/10
一种防止钻机掉钻钻杆专用卡
摘要：
本发明涉及一种防止钻机掉钻钻杆专用卡，包括半月卡、销轴和开口销，所述半月卡、销轴和开口销的数量均为两个；所述半月卡左、右两侧设有连接耳，连接耳中部设有销孔，所述半月卡内侧设有凹槽，所述凹槽上部和下部均设有限位凸台；所述销轴底部设有通孔；所述的两个半月卡通过销轴相连接，且开口销安装在通孔内。两个半月卡相互连接形成限位圆环，在钻杆的连接螺栓断裂的情况下，保证钻杆不会掉落。本发明具有结构设计合理、成本较低等优点，能够实现防止钻机钻杆掉落，使用时，半月卡具有互换性，使用与维修较方便，为钻杆的顺利工作提供保障，可有效提高生产效率。
摘要（英）：

The invention relates to a special drill rod clamp for preventing a drilling rig drill rod from dropping. The special drill rod clamp comprises half-moon clamps, pin shafts and cotter pins. The number of the half-moon clamps, the number of the pin shafts and the number of the cotter pins are all two. The left sides and the right sides of the half-moon clamps are provided with connecting lugs, pin holes are formed in the middle of the connecting lugs, the inner sides of the half-moon clamps are provided with grooves, and limiting bosses are arranged on the upper portions and the lower portions of the grooves. The bottoms of the pin shafts are provided with through holes. The two half-moon clamps are connected through the pin shafts, and the cotter pins are installed in the through holes. The two half-moon clamps are connected with each other to form a limiting ring, and on the conditions of breakage of a connecting bolt of the drill rod, it is guaranteed that the drill rod does not drop. During the use, the half-moon clamps have interchangeability and are convenient to use and maintain, it is guaranteed that the drill rod works smoothly, and the production efficiency can be effectively improved.

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