The sequent wire-pulling is used in electric powered rig as it has smooth lifting system and cross wire-pulling is used in mechanical rig as balanced force relief impact force by compressed ai.

　
英 美
  • 順穿法一般在電動(dòng)鉆機上采用,主要考慮到電控操作提升系統比較平穩;花穿法一般在機械鉆機上使用,以受力平衡來(lái)緩解氣控操作帶來(lái)的沖擊載荷的影響。
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