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3 results about "Derailment" patented technology

A derailment occurs when a vehicle such as a train runs off its rails . Although many derailments are minor, all result in temporary disruption of the proper operation of the railway system and they are potentially seriously hazardous to human health and safety. Usually, the derailment of a train can be caused by a collision with another object, an operational error, the mechanical failure of tracks, such as broken rails, or the mechanical failure of the wheels. In emergency situations, deliberate derailment with derails or catch points is sometimes used to prevent a more serious accident.

Operation safety evaluation method and system of railway freight vehicle

ActiveCN109712270AAccurate and effective assessmentRegistering/indicating working of vehiclesSafety indexDynamic models
The invention discloses an operation safety evaluation method and system of a railway freight vehicle. According to the method, a mass, a centroid position and a rotary inertia parameter of a vehiclebody loaded with cargos are calculated based on data collected by a data acquisition device; the mass, the centroid position and the rotary inertia parameter of the vehicle body loaded with cargos areinputted into a vehicle-track coupling dynamics model as dynamic parameters; a required wheel-rail contact force is calculated by combining the running condition of the vehicle; a derailment coefficient, an overturning coefficient and a wheel load shedding rate of the vehicle are respectively calculated; and then whether the derailment coefficient, the overturning coefficient and the wheel load shedding rate meet corresponding safety conditions is determined to determine whether the safety index of the vehicle is qualified. Therefore, because of consideration of the characteristic of the loaddiscrete distribution of the railway freight vehicle, the running safety state of the railway freight vehicle can be evaluated accurately and effectively, so that the risk of overturning and derailment of the railway freight vehicle is reduced.
Owner:SOUTHWEST JIAOTONG UNIV +1

Derailment monitoring system of endless-rope continuous towing vehicles and monitoring method of derailment monitoring system

InactiveCN104102193ARealize latchingAvoid major security incidentsTotal factory controlProgramme total factory controlDerailmentMonitoring system
The invention discloses a derailment monitoring system of endless-rope continuous towing vehicles and a monitoring method of the derailment monitoring system. An inductance type proximity switch of the derailment monitoring system is installed on a shuttle car; the shuttle car is provided with an emitter; the emitter is connected with the inductance type proximity switch; the emitter emits detection signals of the inductance type proximity switch; a router is installed at one side of a tunnel; the router receives the detection signals emitted by the emitter and transmits the detection signals to a receiver; the receiver is connected with a PLC processor through a bus; the PLC processor is connected with a display screen; the PLC is also connected with a relay; and the relay is connected with a control switch of a winch. With the monitoring method of the derailment monitoring system adopted, the position of the shuttle car can be positioned in real time, and the operation state of the shuttle car can be judged, and if a sensor predicts derailment, alarm signals can be generated, and the motor of the winch can be locked, and therefore, major accidents can be avoided, and efficient and safe operation of a coal mine auxiliary transportation system can be ensured; and derailment prediction information and shuttle car position information can be combined together, so that fault points can be found timely, and therefore, maintenance and repair can be performed.
Owner:SHANDONG UNIV OF SCI & TECH
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