What is Hydraulic Road Blocker and Where to use it?
Karen Systems Hydraulic Road Blockers are designed especially for entrance points which have a threat of vehicle attack or for the ones that have high security requirements. If there is a threat of vehicle attack in addition to the control of vehicle access in high security applications, hydraulic road blockers are the unique solution and the most secure systems. Even though the attack is from high tonnage vehicles with high speeds, it’s not possible for the vehicle to keep on moving because of the damage given to front, wheels and the bottom of the vehicle.
As a manufacturer, Karen’s hydraulic road blockers are designed to K12 standards. Finite element model analyses are available upon request. Drive unit is electro-hydraulic, but in case of power failure road blocker can be lowered or lifted manually with the help of hand pump. Typical raise/lower time is 3 seconds. In case of emergency, raise/lower time can be as low as 1.5 seconds. With the help of PLC (programmable logic control), raise/lower function can be achieved by every kind of card readers, biometric readers like fingerprint or hand shape, radio control, on/off key switch etc. Besides, safety accessories like photocells, inductive loop detectors, flashing lights or red/green traffic lights can be integrated to the system very easily. Typical weight of a road blocker is 2-2.5 tons (depending on road blocker type).
Karen crash tested Hydraulic Road Blocker is an effective way to stop dead a vehicle trying to gain access to a restricted area through force and can work with any of existing security solution including automatic gates, automated barriers or bollards as a second line of defense. These crash tested blockers are unique solutions in most secure systems, regardless of the tonnage or speed of the attacks
The Road Blocker Barrier comes with a push-button control hold as standard, however it can be customised to interface with a wide range of access control equipment to suit specific customer requirements. For safety reasons pedestrians, cyclists and motorcycles are advised not to use a blocker controlled roadway, additional safety measures can be incorporated into the blocker system if required. Where the road blocker control point is remote from the installation, we strongly recommend the fitting of a recordable CCTV system, traffic lights and safety inductive loop systems. This is a specialist security product and is designed for use with vehicles only and a full site risk assessment must be carried out at design stage to ensure that all relevant safety systems are included.
The Karen Systems Road blocker barrier is operated by a hydraulic ram with the power unit (HPU) positioned locally within an externally rated cabinet. The blocker mechanism is encased in a sheet steel enclosure and has access points for onward connection to ducting for hydraulic hoses and control cables. The heavy duty durbar top plate is coated with safety markings, with removable access covers to enable efficient installation and servicing.
