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最近黄河地質勘探队在技术革新中,创造了一种活动立軸頂絲扳手。这种扳手是專用作扳动鑽机立軸卡盤上的頂丝的。使用时將扳手卡头裝于扳手划虛綫的四孔中,即可进行操作。这种扳手的主要構造是一个齿輪,这个齿轮用控制杆来进行控制,控制杆中部裝有彈簧用以推动控制杆的向內伸長。这种扳手的主要特点是当松紧頂絲时,每松紧一次不用將扳手拿开頂絲再进行位置改变工作,像脚踏車的后輪飞輪的作用一样,可以向一个方向自由旋轉。
Recently, the Yellow River Geological Exploration Team has created a kind of vertical axis top wrench in technological innovation. This type of wrench is designed to pull the top wire on the vertical shaft chuck of the rig. Use the wrench chuck head mounted wrench dashed four-hole, you can operate. The main structure of this wrench is a gear. The gear is controlled by a control rod. The middle of the control rod is equipped with a spring for pushing the control rod inwardly. The main feature of this kind of wrench is that when the elastic top wire is fastened, it is possible to freely rotate in one direction like the rear wheel flywheel of the bicycle without loosening the top wrench and changing the position of the wrench.