钻机底座立柱为箱形焊接结构，是整个钻机的支撑构件。
The column of drill base is a trunk welding structure, and it is important to support the whole drill.
实践表明，反变形法和加支撑刚性固定是控制这种大型特厚壁结构焊接变形的有效方法。
The practice have proved that the anti -distortion plus with rigid fixing are the effective measures for controlling the distortions of this huge welding structure.
支撑结构的组装可用螺拴、铆钉或焊接。
The supporting structure may be assembled with Bolts or rivets or by welding.
支撑的结构可以由螺钉或铆钉或焊接的方法组装起来。
The supporting structure may be assembled with bolts or rivets or by welding.
采用型钢焊接的框架结构，两侧有安全护网，带支撑挂耳固定在链条上。
Frame is sectional steel design with two lateral safety grids. Supporting angles are fixed on bush roller chains.
采用型钢焊接的框架结构，两侧有安全护网，带支撑挂耳固定在链条上。
Frame is sectional steel design with two lateral safety grids. Supporting angles are fixed on bush roller chains.
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