摘要 |
<p>The device has a grab pipe (200) provided with a body (210) that is connected with a periphery of an upper connecting pipe (2). Upper and lower gripping elements (224, 234) are extended from upper and lower arc shaped grip washers (220, 230). Operation pins (300) are equipped in through holes. An axial lever (400) is provided with a press plate (410). The axial lever is extended along longitudinal direction of a rod. A cam type hinge part (420) is formed at an end part of the press plate such that a hinge is affixed at an upper projecting end portion of the operation pins.</p> |