| 摘要 |
PROBLEM TO BE SOLVED: To provide a locking structure not to loosen a hanging bolt when a movable wall is fixed with a hanging bolt hung from a hanging wheel traveling on an overhead rail. SOLUTION: The locking structure comprises recesses 11, 11 installed on an upper end of a hanging bolt retainer 7 having a tapped hole 19 in which the hanging bolt is screwed, thereon a locking ring 8 is mounted and thereunder a fixed height 16 is inserted and not only a star washer 9 forming a plurality of recesses 18, 18 and so on but also the height 16 fixed on an upper face of the locking ring in the recesses 18 is inserted, a round hole 13 penetrated by the hanging bolt at a center of locking ring 8 and a long hole 17 penetrated by the hanging bolt at the star washer are formed and then secured by tightening a nut 10.
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