| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a guard fence for road capable of connecting beam pipes mutually and joining bolts to be attached to a support column by using a nut holding member inserted into a hollow part of an inner sleeve. <P>SOLUTION: In this guard fence for road, a positioning means for preventing the inner sleeve 3 from moving in the orthogonal direction and the longitudinal direction of the inner sleeve 3 is provided in the hollow part of the inner sleeve 3, the nut holding member 5 holding a nut 6 in a detent state and having a locking part is inserted into the hollow part, each nut 6 in the nut holding member 5 fits to each bolt hole in the inner sleeve 3, the beam pipe 4 is fitted by arranging each bolt hole to let each bolt hole fit to each bolt hole in the inner sleeve 3, and the bolt is screwed into the nut 6 corresponding to the nut holding member 5 to join them. A bracket 2 is attached to the support column 1, the beam pipe 4 is applied to a pipe receiving part of the bracket 2, and the bolts 9, 11 are inserted through the pipe receiving part and are screwed into the nuts 6 corresponding to the nut holding member. <P>COPYRIGHT: (C)2011,JPO&INPIT |
