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发明授权
CN101892810B 一种以切削方式破岩的复合式钻头 有权 转让

一种以切削方式破岩的复合式钻头
摘要：
本发明公开了一种以切削方式破岩的复合式钻头，包括钻头本体(1)、转轮(2)，所述钻头本体(1)上具有轮掌(3)，所述转轮(2)安装在所述轮掌(3)的轴颈(6)上，与轮掌(3)形成转动连接，在所述转轮(2)上布置有外排切削齿圈(4)，所述转轮(2)的偏移角α的范围是20°≤|α|≤90°，在所述钻头本体(1)上设置有包含固定切削齿(8a)的固定切削结构(8)。本发明中转轮上的切削齿以交替刮切的形式破岩，并配合固定切削结构上的切削齿，在井底岩石上形成网状破碎区域，破岩效率高，磨损均匀，冷却效果好，齿的寿命长，轴承工作寿命高，钻头使用寿命长。
摘要（英）：

The invention discloses a combined drill breaking rocks by a cutting method. The combined drill comprises a drill body (1) and a rotating wheel (2), wherein a wheel palm (3) is arranged on the drill body (1); the rotating wheel (2) is arranged on the shaft neck (6) of the wheel palm (3) and is in rotary connection with the wheel palm (3); an external row of cutting gear rings (4) are arranged on the rotating wheel (2); the deviation angle alpha of the rotating wheel (2) is in a range that the absolute value of alpha is more than or equal to 20 degrees and less than or equal to 90 degrees; anda fixed cutting structure (8) with fixed cutting teeth (8a) is arranged on the drill body (1). Cutting teeth on the rotating wheel break the rocks in an alternatively scraping mode and cooperates with the cutting teeth on the fixed cutting structure to form a net-like breaking region on the pit bottom rocks, so the combined drill has the advantages of high rock-breaking efficiency, uniform wear, good cooling effect, long service life of the teeth, long working life of the bearing and long service life of the drill.

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