After the fixing bolt is completely screwed in the central hole of the screw, the upper end-face of the fixing bolt is lower than the upper end-face of the fixing sleeve pipe.
固定螺钉完全旋入螺杆中心孔后，固定螺钉的上端面低于固定套管的上端面。
In installation, only the bolt is needed for fixing the first splicing piece and the second splicing piece.
当安装时只需用螺钉固定第一拼接件和第二拼接件即可。
The invention discloses a crane, in particular to a crawler crane with a bolt fixing type hoisting mechanism.
本发明公开了一种起重机，特别是一种具有螺栓固定式卷扬机构的履带起重机。
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