| 摘要 |
<p>PURPOSE: To perform tightening very easily and further uniformly many bolts or nuts by obviating the necessity of labor, in the case of tightening the many bolts or nuts along the periphery of a flange part. CONSTITUTION: In a bolt or nut tightening tool in a small bore flange part arranging a plurality of bolts 2 or nuts provided along the periphery of a flange 1, a ratchet ring 7 connected to an end of a piston 5 in one end of a hydraulic torque wrench 3 is fitted to the bolt 2 or nut to be tightened. The other end of the hydraulic torque wrench 3 and the other bolt 2 or nut in the flange part are connected respectively turnably by a reaction force receiving tool 12, to provide a reaction force receiving plate 16, which can be brought into contact with a peripheral edge of the flange 1, in one side surface of the reaction force receiving tool 12.</p> |
