摘要
将水平定向钻机的卡瓦分为整体式卡瓦与组合式卡瓦2种。计算得到它们与钻杆表面的作用机理分别为表面接触式和嵌入式。初步确定了卡瓦与钻杆之间的摩擦系数。最后,针对卡瓦打滑和伤害钻杆的问题,设计出了菱形齿面卡瓦和嵌入合金颗粒的卡瓦。
The slips of horizontal directional drilling rig are divided into two types： the holistic slips and combined slips. The action mechanism between rod and the two types of slips are： elastic-touch type and embedded type. The friction coefficients between slips an rod are ascertained. At last, aimed at problems such as ＂slipping＂ and ＂hurt rod＂ that always occurred in the construction, two types of slips are designed： diamond tooth slips and imbedding diamondite granule slips.
出处
《煤矿机械》
北大核心
2009年第9期176-178,共3页
Coal Mine Machinery
关键词
水平定向钻机
作用机理
非开挖
卡瓦
改进
horizontal directional drilling rig
action mechanism
trenchless
slips
improvement
