| 摘要 |
PROBLEM TO BE SOLVED: To provide a transportable barricade for blocking an approaching vehicle that may be folded compactly into a flat frame, thereby allowing a series of work from transportation to an installation site to carrying back to be performed readily and without a physical damage.SOLUTION: A transportable barricade for blocking an approaching vehicle includes a plurality of projection materials 5 for an outer shaft 1 that are installed and fixed in parallel to each other at a plurality of locations separated along a longer-side direction of the outer shaft 1, with an intermediate part of the projection material in a longer-side direction inserted into the outer shaft 1. A plurality of projection materials 6 for an inner shaft 2 are disposed in parallel to each other in a number corresponding to the projection materials 5 for the outer shaft, the projection material 6 for the inner shaft being connected on the inner shaft 2 side and having an intermediate part in a longer-side direction thereof inserted into the outer shaft 1 in a way that allows forward/backward motions in an axial direction and rotation. The projection materials for the outer shaft and the inner shaft may be switched between adjacent folded state and expanded state by a folding or expanding operation through energizing means, the projection materials arranged in a shaft-form that are parallel to each other, around the outer shaft. The projection materials 5 for the outer shaft may be disengaged from the projection materials for the inner shaft when external force that resists the energizing means is exerted, to return to the folded state.SELECTED DRAWING: Figure 9 |
