| 摘要 |
The security bollard, for preventing vehicular access, comprises an enclosure 12 and an impact post that comprises a foot box 14 within which at least one spring steel impact element 16 is partially received. A pivot element 18 is configured to allow pivotal movement of the foot box with respect to the enclosure between a first position in which the post is fully contained within the enclosure in a horizontal orientation and a second position in which at least one impact element extends substantially vertically from the enclosure, with an actuator 42,44 acting to pivot the post between the two positions. Load spreader bars 20,22 may be located on the enclosure. The pivot element may comprise a pin rotatably located in sidewalls of the enclosure and attached to an external surface of the foot box. The actuator may be hydraulic or comprise an electric motor. The enclosure is preferably embedded in concrete. |
