Detector Derailment Device (&) Frenado (Braking) Automatic Train
3D&FAT Systems Detector Derailment Device (&) Frenado (Braking) Automatic Train Manufactured and marketedby ALL RAIL SYSTEMS Accidents by several derailments What is the 3D&FAT System?
It is a system for automatically detecting train derailments by mechanical and pneumatic devices that, by operating a valve by a mechanical switch, produces automatic train braking. This system is adaptable to any freight, or passenger, wagon equipped with bogies and no need electrical power The 3D&FAT was invented by railway experts and is patented by FEVE (now integrated into RENFE), operates in several railway companies with more than 1,500 cars and is manufactured and marketed by ALL RAIL SYSTEMS Actuating Bell Detector Actuator Brake Valve Operating Principle Its working principle is based on the continuous analysis the relative position of the bogie frame of the car. When the normal parameters are exceeded, that is, when the derailment occurs, a switch is actuated which transmits a pneumatic signal to the brake valve, thus triggering the automatic braking of the train. Mechanical device It consists of a piece called "actuator bell", which is mounted in solidarity at a specific location of the bogie frame, and is sized for each particular case based on the parameters and characteristics of the wagon track and bogies Pneumatic device The "detector actuator" is the element which is installed at a certain point on the frame of the wagon and is responsible for transmitting a signal to pneumatic brake valve system, in case that the receipt of the mechanical action of the "actuating bell" BRAKEVALVE The "brake valve" is installed in the pipe automatic braking of each car (TFA) and its mission is to download the air in the pipe, thereby acting automatic brake throughout the train instantly as if were an emergency braking Pneumatic brake Scheme Scheme pneumatic, component connection
Wagon brake pipe (TFA) Tank Air Car 3 1 2 3 Bell in bogie Button in Car Body Automatic Brake Valve 1 2 How to Install the 3D&FAT?
Analyzing, in situ, a previous study the movements of the bogie relative to the frame, on three axes (vertical, longitudinal and transversal) at empty and loaded car, is performed. Equipment recorder, provided with three linear encoders", that overturn its results for the representative routes tour, a laptop, used. The results are used for dimensioning of the "bell" The kit mounts 3D&FAT on 2 3 cars and exhaustive checkings are realized in track and with all kinds of routes During the study the formation of the railway staff itself is performed, in order to train them in the final assembly 3D&FAT Preparation wagon in motion analysis way of the SNIM Movements Analyzed Vertical movement Radial movement
Longitudinal movement Movements for curve and for fault of the bogie
Radial movement Longitudinal movement Vertical movement of track defects Position before derailing bogie
22 Derailed bogie position on the front axle
23 Position of derailed bogie at the rear axle
24 Simulation axle derailed Vertical movement Simulation of a derailed axis Radial movement Results of measurements on track Dimensioning BellIs determined by the results obtained after measurements track
294 160 60 167 ASSEMBLAGE After obtaining dynamic measurements, performed assembly.
Later testing track, consisting become: Perform a representative way, with the car loaded and unloaded, at high and low speeds, to verify that the system does not work. Test derailment caused and controlled. Test system performance by abnormal rotation of the bogie. Advantages over other systems
It is easily resettable, manually Its operation does not depend on the speed of the train The isolation is done by canceling the brake the car in the normal control. What is a guarantee to never let down. It is even capable of acting on slab track, since it does not depend on fluctuations than other devices need to function (effect of wheel clash with sleepers of the track) Maintenance free It can be set to detect via points in disrepair It can detect mechanical defects bogie, producing the train braking before the derailment occurs What 3D&FAT Systems gives?
The 3D&FAT System serves to reduce and minimize the damages that occur in the infrastructure, rolling stock and in the environment, after a derailment occurred. It is not, therefore, a device that can prevent derailment, because it acts only after they occur. It reduces drastically the damage for derailment, because the train stops a few meters. Without a system detector of efficient derailment, the distance crossed by the train can come to several kilometres, with one o more derailed cars, capable of destroying what they find to his step. Examples of assembly Brake valve mounted Checking performance 3D&FAT in derailment caused