Being devoted possibly being the protection fence which possesses

摘要

PROBLEM TO BE SOLVED: To provide a guard fence having the structure facilitating fitting and removal of a support post by allowing tilting and twisting of the support post in all directions with a simple structure.;SOLUTION: In the guard fence comprising the support posts 10 tiltably erected at predetermined intervals and a guard net 20 spread between the support posts 10. Each of the support posts 10 has a free hinge device 30 which includes: a grounded plate having an anchor hole; a connecting pipe detachably connected to a lower part of the support post 10; a universal joint allowing the tilt and twist in all directions; and a restricting plate restricting the tilt in a specific direction.;COPYRIGHT: (C)2011,JPO&INPIT