Pneumatic Riser

Pull-outs are installed in fire engines to lift monitors from a low stand-by position to a raised working position. When the monitor is retracted, the overall height of the vehicle can be kept low. In the raised working position, the vertical swivel range of the monitor is considerably extended. Pneumatic extensions are installed into firefighting vehicles in order to lift monitors from a low standby position to a raised work position. Thus, the vehicle overall height can be kept low with the monitor retracted. The vertical monitor swivel range will extend considerably at the raised work position and the operator's work position is optimised. The extension consists of a telescopic tube extension and two pneumatic cylinders arranged to the left and right sides. These cylinders are supplied with compressed air between 5 bar and 8 bar. Delay elements dampen the extension and retraction movement The pneumatic extension DN150 has a lifting height of 450 mm and a lifting speed of approx. 22 s, at a control air pressure of 6 bar. Two air connections ¼" provide the required control pressure of 5 - 8 bar for the two pneumatic cylinders.