| 胡定成.差动式大直径多钻头组合钻具[J].地质与勘探,1998,(3):60-62 |
| 差动式大直径多钻头组合钻具 |
| A STUDY ON THE MULTI-HEAD LARGE DIAMETER DRILLBIT CONTAINING DIFFERENTIAL MECHANISM |
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| DOI： |
| 中文关键词: 钻头 组合钻具 差动式钻头 桩孔 |
| 英文关键词: differential mechanism, drillbit |
| 基金项目: |
| 胡定成 |
| 铁道建筑研究设计院 |
| 摘要点击次数: 1434 |
| 全文下载次数: 1096 |
| 中文摘要: |
| 介绍一种新型大直径钻具－－－差动式多钻头组合钻具的结构原理、力学特性和关键技术等内容。 |
| 英文摘要: |
| A multi-head large diameter drillbit containing differential mechanism were designed. The structure drilling process,mechanical properties and key techniques of this new kind of drillbit were introduced. |
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