Outside elements and other signaling devices

The AŽD Praha light signals for railroads are a complex modular construction set which can, only with a minimum range of parts, satisfy the operation needs in stations and railroad lines, sidings and mining lines. A random light signal can be created for any purpose from the AŽD Praha modular construction.

The Signal lamp with optics is a modular construction system often used in AŽD Praha 70 light signals. By placing the signal lamps next to each other or above each other it is possible to create the requested set. The lamp can be delivered in a metal design.

The indicator with LED diodes supports signal devices of main, shunt and humping signals but in some cases it can be installed individually, i.e. without a signal device. The indicator is used for expressing a signal aspect or its part. It gradually displays 1 to 4 aspects. These aspects can have a different light color.

An indicator with light guiding fibers is used in the signal devices of main, shunt and humping signals but in some cases it can be installed individually. It is used for the expressing of the signal aspect or its part. It gradually displays 1 to 4 aspects. These aspects can have a different light color.

This optics system is used for creating a speed mark. It is mainly used for post or bracket type light signals. The light source are two rows of bulbs each having its own optics system containing a green or yellow filter with a condenser lens.

The electronic point machine is used for controlling and securing changes of frogs with moveable toes and derailers. The point machines are produced in trailable and non-trailable and left or right versions and or intended for installation with a joint fixation set into a hollow sleeper adjusted for four point fixation of the point machine or for installation via a four point f...

The VZ 200 replaceable jaw lock is used for controlling replaceable tongues and moveable toes of frogs and for their fixation at end positions. It belongs to trail locks enabling the gradual operation of replaceable tongues.

All railroad boards endeavor to use environment friendly points that are time undemanding technology. One possibility is to start using replacement roller chairs which replace slide friction with rolling friction. The goal is to lessen the demandingness of maintenance of replaceable slide rollers or their removal in general.

The thrusting roller chair (VSD) is intended for points where the adjacent tongues must lie on the tongue supports with a slackness not greater than 5mm at speeds of up to 90 km/h, respectively 2 mm at higher speeds. The precise movement of the tongues in the mentioned field is affected by passive friction forces on roller chairs when the tongue moves to an adjacent position. T...

The SPA end position checking unit is a safety element of the railroad signaling technology. It is used for the multi-point monitoring of the end position of an adjacent replacement tongue and for the indication of a rail vehicle entering a point with a fixed point crossing in a non-trailing system of signal devices in the wrong direction.

The self-returning point mechanism (MSV) is a device enabling the selfactive returning of a railroad point into its basic position after throwing-over the point by a railroad vehicle running on the tip. If a run against the tip in the opposite direction than is the standard position is required (e.g. while shunting) then it is possible to unlock the MSV lock and tip over the ba...