Autonomous bollard of variable height

摘要

A bollard intended to prevent or select (allow) passage thanks to its variable height. The bollard comprises moving equipment 1 which can move vertically inside a casing 2 and can be locked at predetermined levels. The raising of the visible part 3 of the bollard is performed by a gas actuator 7 without an external energy source except that provided when pushed down by the operator. The locking system uses a personalised key and a security master key. Particularly designed for controlling passage and parking of motor vehicles of all types. <IMAGE>