| 摘要 |
A fluid operated tool for elongating and relaxing a threaded connector has a fluid operated drive having an axis, a non-rotatable driving part driven by the fluid operated drive, and a reaction part, wherein the reaction part includes a non-rotatable tool element of the tool provided with first element for engaging non-rotatably a threaded connector, the driving part includes a rotatable tool element rotatable about an axis of the threaded connector and having second element for engaging the rotatable tool element with the non-rotatable tool element, and an intermediate element arranged between the non-rotatable tool element and the rotatable tool element, and being formed so that it engages with the non-rotatable tool element so as to be non-rotatable as well while the rotatable tool element freely turns relative to the intermediate element, whereby when the rotatable tool element is turned around the axis the non-rotatable tool element only moves in an axial direction but does not rotate and therefore pulls a threaded connector in the axial direction.
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