| 摘要 |
PURPOSE: An anti-loose bolt-nut coupling method is provided to prevent the loosening of bolt and nut coupling in a structure caused by external vibration. CONSTITUTION: An anti-loose bolt-nut coupling method is as follows. A washer(2) is inserted to the shaft(9) of a bolt to be located on one side of the bolt head, a member(3) is inserted to the bolt shaft, and a washer(4) is inserted to the bolt shaft to be located on one side of the member. A nut(5) is tightened along the thread(1) of the bolt shaft so that the washers are tightly assembled with the member interposed. A ring-type spring washer(6) is inserted to the bolt shaft and an equiangular trapezoidal beveled nut(7) having an angle of 0.01~45° is tightened along the thread of the bolt shaft so that the spring washer is pressed and fastened to one side of the nut.
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