There are few systematical formulas to calculate the roller number and the distances between rollers in crawler travel system of rotary pile drill.
旋挖钻机履带式行走装置支重轮之间的距离及其数量的多少，尚缺少系统的计算公式。
Crawler hydraulic drill, and USES the new type of hydraulic technology, low gas consumption, rotary torque, move the hole deflection is convenient.
履带式液压钻机，采用新型液压技术，耗气量低，回转扭矩大，移孔变位方便。
With crawler, it is easy and fast to find out the drill hole position.
采用履带行走机构，移动孔位方便，快捷。
With crawler, it is easy and fast to find out the drill hole position.
采用履带行走机构，移动孔位方便，快捷。
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