Retractable hydraulic bollard for prohibiting access to vehicle in reserved parking place, has jack fed by pump rotated by drilling or screw driving machine that is handled by operator for permitting rising and descending of bollard

摘要

The bollard (A) has a mobile marker in which a support plate (M) is housed, where movement of the bollard is activated by a hydraulic jack (F) without an internal or external motorization. The hydraulic jack is fed by a double direction hydraulic pump (B) rotated by a drilling machine or screw driving machine (G) that is handled by an operator for permitting rising and descending of the bollard by reversing rotation direction of the screw driving machine. The pump aspires hydraulic oil in a reservoir (C) through a drilled block (D).