PROTECTIVE FENCE, PROTECTIVE FENCE CROSS BEAM, AND COUPLING STRUCTURE OF PROTECTIVE FENCE CROSS BEAM

• Main Authors: YAMADA KEITA, SUZUKI YUKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 12.10.2023
• Subjects: ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS

To provide a protective fence capable of preventing a vehicle from breaking into a lane under construction even when unexpected collision energy is applied.SOLUTION: In a protective fence, a base end part 34 having a width that is narrower than a cross beam 3a, a first male fitting part 41 having a width that is wider than the base end part 34, a protrusion part 42 having a width that is narrower than the first male fitting part 41, and a second male fitting part 43 having a width that is wider than the protrusion part 42 and narrower than the first male fitting part 41 are provided in order on one end side of the cross beam 3a from the base end to the tip thereof, an opening 50 through which the base end part 34 is guided and can be inserted, a first female recess part 51 having a width that is wider than the opening 50, into which the first male fitting part 41 can be fitted, an insertion part 52 having a width that is narrower than the first female recess part 51, through which the protrusion part 42 can be inserted, and a second female recess part 53 having a width that is wider than the insertion part 52 and narrower than the first female recess part 51, into which the second male fitting part 43 can be fitted are provided in order on the other end side of the cross beam 3a from the base end to the tip thereof.SELECTED DRAWING: Figure 1 【課題】想定外の衝突エネルギーが加わる場合であっても車両が工事中の車線へ突破してしまうのを防止可能な防護柵を提供する。【解決手段】横梁３ａの一端側には、その基端から先端にかけて、横梁３ａよりも縮幅された基端部３４と、基端部３４よりも拡幅された第１雄型嵌合部４１と、第１雄型嵌合部４１よりも縮幅された突出部４２と、突出部４２よりも拡幅されていると共に上記第１雄型嵌合部４１よりも縮幅された第２雄型嵌合部４３とが順に設けられ、横梁３ａの他端側には、その先端から基端にかけて、基端部３４を案内させて挿通可能な開口部５０と、開口部５０よりも拡幅されて第１雄型嵌合部４１を嵌合可能な第１雌型凹部５１と、第１雌型凹部５１よりも縮幅されて突出部４２を挿通可能な挿通部５２と、挿通部５２よりも拡幅されていると共に第１雌型凹部５１よりも縮幅されて第２雄型嵌合部４３を嵌合可能な第２雌型凹部５３とが順に設けられている。【選択図】図１