547 results about "Derailment" patented technology

A method of inspecting a turnout of a track includes the steps of: capturing images of the components of the turnout; converting each image into a set of coordinates that traces the transverse cross-section of a rail profile; analyzing the rail profile to determine if the rail profile is a profile of arunning rail portion or a component. Upon determination that the image represents a component, taking measurements of the rail profile and applying virtual gauges to the rail profile to check for potentially dangerous conditions of the component; and generating a summary of each cross-section of the rail profile of the component indicating problem areas. The method is used for identifying certain classes of switch or turnout rail conditions which can lead to derailments, and for enhancing the turnout inspection approach currently used. The use of this method as an integrated part of the rail profile monitoring program will reduce reliance on field measurements and will also allow more frequent, comprehensive, and convenient analysis of turnout condition.

A method of inspecting a turnout of a track includes the steps of: capturing images of the components of the turnout; converting each image into a set of coordinates that traces the transverse cross-section of a rail profile; analyzing the rail profile to determine if the rail profile is a profile of arunning rail portion or a component. Upon determination that the image represents a component, taking measurements of the rail profile and applying virtual gauges to the rail profile to check for potentially dangerous conditions of the component; and generating a summary of each cross-section of the rail profile of the component indicating problem areas. The method is used for identifying certain classes of switch or turnout rail conditions which can lead to derailments, and for enhancing the turnout inspection approach currently used. The use of this method as an integrated part of the rail profile monitoring program will reduce reliance on field measurements and will also allow more frequent, comprehensive, and convenient analysis of turnout condition.

A solution for monitoring a railway vehicle is provided. A vehicle node and one or more sensor nodes are deployed on the railway vehicle. Each sensor node is configured to acquire data and communicate with the vehicle node only when certain conditions are met. The sensor node(s) and vehicle node can evaluate operating conditions to determine whether an alert should be sent to initiate action. In an illustrative application, the alert can correspond to excessive hunting by a wheelset of the rail vehicle which is posing a danger for derailment.

The disclosed system includes network central station in locomotive, and network junction station in each carriage. Both of the said network central station and network junction station is as front end, back end, data acquisition and execution unit and power section of equipment including digital signal processor and free space optical communication portion (FSO) of the forwarding and device control center. FSO includes optical transceivers A and B. In charge of carrying out continuous monitoring in real time for state of locomotive and carriages, data acquisition part in the data acquisition and execution unit includes wind pressure sensor, thermal axis sensor, bearing sensor, derailment detector, digital camera etc. The execution unit controls a banking locomotive to act operations accordant with main locomotive. The execution unit for carriage controls braking and releasing electropneumatic valve.

The invention discloses a ballastless track damage analysis method performing combined solution based on definite element expansion and fatigue analysis. The method includes the following steps that a definite element model of a ballastless track is built; needed loads and boundary conditions are applied to the definite element model, and stress analysis is performed on the definite element model; a stress analysis result is imported into fatigue analysis software, and fatigue performance analysis of the definite element model is performed; based on a definite element expansion method, fracture mechanics parameters of materials of the track structure are defined in the definite element model, service life critical portions obtained during fatigue performance analysis are selected as damaged regions, and generation of damage and a continuous development evolution rule are calculated; a train wheel track coupling model is added on the definite element model, damage is applied to the truck structure, the transverse acceleration, the vertical acceleration, the derailment coefficient and the wheel weigh load reducing rate of a train are calculated after the damage happens to the track structure, and influences of the damage on running of the train are analyzed.

A railroad track monitoring system is described which detects changes in rail track geometry that could lead to derailments, The changes in geometry are detected via analysis of temperature and stress parameters that are collected at one or more sensors installed on the track. Methods are described which provide faster detection and reduced false alerts, thereby saving time and expense to the railroad system.

The invention discloses a railway vehicle active obstacle and derailment detection system, which includes an obstacle and railway detection unit, a data processing unit and a train control system which are electrically connected mutually. The obstacle and railway detection unit are used for scanning objects around the railway vehicle and a running railway during driving, and obtaining object point cloud data, object information and track image information, in the data processing unit, initial point cloud data, initial image information and initial track image information obtained by a camera of objects around the railway vehicle obtained by the radar in the normal driving process are pre-stored, a result is analyzed and fed back to the train control system by integrating and comparing information fed back by the obstacle and railway detection unit with memory information of the obstacle and railway detection unit, and according to the analysis result, the train control system gives control instructions to the train running state actively. According to the way, the railway vehicle active obstacle and derailment detection system can find abnormalities in time and give active braking instructions to the vehicle.

The invention relates to a train navigation monitoring early warning system which comprises a navigation monitoring early warning module, a power supply module and a monitoring center, wherein the navigation monitoring early warning module comprises an inertia navigation module, a wireless communication module and an image processing module; the power supply module is connected with the navigation monitoring early warning module; the monitoring center comprises a server and a wireless communication module, and the server is connected with the navigation monitoring early warning module by a wireless network. The early warning method comprises the following steps: the navigation monitoring early warning module measuring the acceleration of a train in real time by adopting an accelerometer, and collecting the attitude information of the train in running by adopting a gyroscope; adopting an inertial navigation algorithm to calculate the collected acceleration data and the attitude information in a central processor to obtain the train running speed and the position information of the train; and adopting the image processing module to collect the situation of surrounding objects of the train in running, so as to judge whether a barrier exists in front of the train. The train navigation monitoring early warning system can effectively prevent the occurrence of abnormal events such as train derailment, collision or the like.

The disclosed is a derailment protection apparatus that may comprise a wheel guiding member or a rail contact member having an inclined surface, a descending device to descend the wheel guiding member or the rail contact member, and wherein the inclined surface comes in contact with a rail, when the descending device operates. The derailment protection apparatus may return a wheel of a rolling stock to be deviated from a rail to a normal position, when the rolling stock with a bogie receives an abnormal vibration due to such as earthquake.

The invention discloses an evaluation method for the impact of ballastless track typical damage on the operation safety of a high-speed train. The method is based on the dynamic model of a ballastlesstrack structure, and is characterized in that, based on the theory of space vibration analysis of a train-track system, track dynamics and random analysis of train derailment energy, through mechanics reasonable simplification, all kinds of typical damage of ballastless tracks are simulated to establishes the dynamic model of ballastless track structure in damaged state, and the vibration response ofdifferent damage types or different degree of the same damage on the track system is analyzed and calculated. Based on the dynamic calculation results and the damage classification criteria, the influence of different degrees of damage on the ride comfort and safety of ballastless track is determined. On the basis of reducing labor intensity, the invention can quickly determine the influence of various damage of ballastless track on the operation of high-speed train, thereby providing a basis for timely adopting corresponding maintenance measures and further providing a guarantee for the safe operation of the high-speed train.

There is obtained an electric-vehicle controller that prevents energy stored in a power storage unit from being discharged in the case where a collision, a derailment, or breakage of an overhead line occurs. The electric-vehicle controller is provided with a DC-to-DC converter one terminal pair of which is connected to the DC power source side of the inverter, a power storage unit that is connected to the other terminal pair of the DC-to-DC converter and stores electric power, a switch provided between the power storage unit and the DC-to-DC converter, and a control unit that opens the switch in the case where abnormal circumstances may occur or have occurred.

The invention provides an early-warning method for vehicle derailment based on steel-rail deformation or stress parameters. The method comprises the following steps: (1) collecting the metrical data of a sensor; (2) generating an event when the vehicle passes the early-warning test point on the basis of the axle-number information of a train and the metrical data of the sensor, and starting an early-warning process for derailment; (3) obtaining the coefficient of vehicle derailment, the data of load reduction rate and the date of scar early-warning by the steel-rail deformation or the stress parameters; (4) estimating the train derailment tendency according to the coefficient of vehicle derailment , the data of load reduction rate and the data of scar early-warning; and (5) determining whether an early-warning operation for the vehicle derailment is carried out according to the estimating results. The invention can be utilized to integrate the monitoring of various traveling safety parameters into one system, thereby avoiding the complexity of a related monitoring system.

The invention relates to a car derailment warning method, which comprises the following steps: a sensor is mounted on a sensor connecting rod between two rails; when derailed wheels press the sensor connecting rod, the sensor sends out derailment signals to ground control equipment; a main control unit of the ground control equipment receives the derailment signals and sends out derailment early warnings and emergency breaking instructions; a coding unit codes the derailment early warnings and emergency breaking instructions and sends coded instructions to a derailed train and a nearby train by a transmitter; a vehicle station located on the derailed train or the nearby train receives and analyzes the derailment early warnings and emergency breaking instructions; a breaking device of the train is initiated to stop the train. The car derailment automatic early warning system comprises the sensor connecting rod, the sensor, the main control unit, the coding unit, the transmitter and the vehicle station. The method and system of the invention can avoid the occurrence of a secondary accident to the train after derailment and reduce loss of casualty and property caused by the accident.

The invention relates to railway automobile transportation and belongs to the filed of railway transportation. The railway automobile transportation systematically changes a technical proposal for automobiles to get on a train and reduces the time for the automobiles and containers to get on and off the train from the prior a plurality of hours to only 3 minutes which approaches or less than the time for passengers to get on the train, thereby meeting the requirement on midway stop time of high-speed freight direct trains, achieving such a speed that the automobiles can get on the train simply as if the automobiles enter a highway, and reaching professional and industrial level. The railway automobile transportation effectively solves and eliminates the long-existing safety hazards of railways, such as derailment, upsetting and long braking distance.

The invention relates to the mechanic field, in particular to a guiding skid shoe component, comprising a guiding skid shoe having a guide groove, a wear layer fixed on an upper surface of the guide groove, a movable measuring rod and a sensor; the guiding skid shoe comprises a mounting hole over the guide groove; the wear layer is provided with a measuring hole passing through the guide groove and the mounting hole, the movable measuring rod is located in the mounting hole, and a lower end of the movable measuring rod is in sliding fit with the measuring hole along the axial direction of the measuring hole; and the sensor is located in the mounting hole and used for measuring displacement of the movable measuring rod. With reduction of the thickness of the wear layer, the movable measuring rod gradually moves upwards, and the sensor can measure the displacement of the movable measuring rod and measure the wearing capacity of the wear layer. The sensor can conveniently and accurately measure the wearing capacity of the wear layer to perform real-time measurement on the wearing capacity of the wear layer, so that the wear layer can be repaired and the guiding skid shoe can be changed in time, and derailment of the guiding skid shoe and damage on other elements caused by excessive wearing of the wear layer are avoided.

A carriage lateral movement-limiting system capable of effectively restricting the lateral movement of a derailed carriage. The system comprises derailment prevention guards (62a, 62b) laid along the inside of paired left and right rails (60a, 60b), and a lateral movement-limiting device (52) installed on the lower part of the carriage (30). The device (52) has a stopper (51) projecting downward at a position between the wheels (36a, 36b) of the carriage and brought into slidingly contact with the inner surfaces of the derailment prevention guards (62a, 62b) when the carriage is derailed.

The invention relates to a railway wagon fault image recognition method, in particular to a railway wagon derailment automatic brake valve cock handle closing fault image recognition method. The objective of the invention is to solve the problem that the existing railway wagon derailment automatic brake valve cock handle closing fault image identification accuracy is low. The method comprises thesteps: 1, building equipment around a truck rail, and obtaining two-dimensional images of the two sides of a truck; 2, carrying out derailment automatic brake valve cock handle part coarse positioningon the obtained two-dimensional image; 3, establishing an original sample data set based on the derailed automatic brake valve cock handle part image of coarse positioning; 4, carrying out data set amplification on the original sample data set; 5, obtaining a trained positioning model SSD and a classification model VGG16; and 6, according to the fault information, generating a message according to the fault position and the fault type, and uploading the message to an alarm platform. The method is applied to the field of rail wagon fault image recognition.

The invention provides a train operation safety online monitoring method based on vibration acceleration. The method comprises the following steps that the vibration acceleration data of the wheels onthe train within a certain period of time are acquired; the wheel uplift amount and the wheel side-sway amount of the train are acquired based on the vibration acceleration data within the period oftime; whether the peak value of acceleration and the absolute value of acceleration of the vibration acceleration data within the period of time and the wheel uplift amount and the wheel side-sway amount simultaneously meet the respective preset threshold is judged so as to acquire the judgment result; and derailing trend judgment is performed and alarming is performed if the judgment result is yes. The train operation safety online monitoring method based on vibration acceleration is low in computational burden, fast in computational speed and suitable for online monitoring; and only the acceleration sensor is used so that the cost is low and installation is convenient. Four derailment indicators are applied to judge train derailing so that the comprehensiveness is high and reflection ofthe derailing state is more comprehensive.

A method and a device for the recognition of a derailment state of a wheel (RAD) of a rail vehicle. The acceleration of the wheel (RAD) is measured perpendicularly to a rail plane (ε) with at least one acceleration sensor (SEN), whereby from an acceleration signal (BSI) generated by the acceleration sensor (SEN) by means of simple integration (INT) over a time window of predeterminable magnitude, one determines a fall speed (FAG) of the wheel (RAD) in the direction of the rail plane (ε), and whereby on the basis of the determined fall speed (FAG), one examines whether a derailed state exists.

The invention discloses a method for predicting rate of wheel load reduction in the technical field of railroad safety. The method comprises the following steps: first, collecting left track longitudinal irregularity, left track direction irregularity, right track longitudinal irregularity and right track direction irregularity data by adopting a track inspection car; then, simulating the data by using professional software ADAMS (automatic dynamic analysis of mechanical systems) / RAIL to obtain rail-wheel load data, namely vertical rail-wheel load and horizontal rail-wheel load, thereby obtaining and normalizing the rate of wheel load reduction; selecting a training sample to train a NARX (nonlinear auto-regression with exogenous input) neural network model; testing the trained NARX neural network prediction model and outputting the rate of wheel load reduction data after the test; and analyzing the rate of wheel load reduction data in the training sample and the rate of wheel load reduction data obtained from the neural network after the test and valuing performance of the NARX neural network prediction model. By using the method, derailment coefficient is precisely predicted and accuracy of railway operation safety evaluation is improved. Therefore, the method has important realistic meanings to railway traffic safety control.

An elevator installation has a guide rail of a predetermined length and a movable body configured to move along the guide rail up and down a hoistway. A proximity sensor is mounted on the movable body to be in a predetermined proximity of the guide rail. The proximity sensor is configured to detect whether or not the proximity sensor is at the predetermined distance to the guide rail. A controller coupled to the proximity sensor acts upon an indication that the proximity sensor is not at the predetermined distance to the guide rail to switch the elevator installation to a secure state.

The invention belongs to the technical field of high-speed trains, and particularly discloses a high-speed train aerodynamic force regulation telescopic wing device, a high-speed train and a control method. The telescopic wing device comprises a supporting base and a telescopic wing structure which is installed on the supporting base and moves in the width direction of the high-speed train. The telescopic wing structure comprises a first telescopic wing installed on the supporting base, a telescopic wing unit which is arranged in the first telescopic wing in a sleeved mode and moves in the axial direction of the first telescopic wing, and a telescopic mechanism which is installed in the first telescopic wing and controls the telescopic wing unit to move. The invention further discloses a high-speed train based on the telescopic wing device and a control method of the telescopic wing device. During normal operation, necessary lift force is provided for the whole train, so that pressure borne by wheels is reduced, and meanwhile train derailment cannot be caused; and when the high-speed train runs to a special environment with the crosswind effect, the telescopic wing unit is controlled, lift force is only provided on the leeward side of the crosswind effect, lateral force generated by the crosswind effect is resisted, and stable running of the train can be maintained.

The invention discloses a braking sail derailment device for a cube satellite. The braking sail derailment device comprises a locking device, a storage mechanism, a mounting panel, a conical spring, an unfolding mechanism and a diaphragm sail. The locking device is fixed on the top face of the mounting panel. The storage mechanism is fixed on the bottom face of the mounting panel. The conical spring, the unfolding mechanism and the diaphragm sail are arranged in the storage mechanism. The large-diameter end of the conical spring is fixedly connected with the mounting panel, and the small-diameter end of the conical spring is fixedly connected with the unfolding mechanism. The diaphragm sail is tied to the unfolding mechanism. The braking sail derailment device is fixedly connected to the bottom of the satellite through the mounting panel at the top, so that the space inside the satellite is not occupied. After receiving a command from the ground, the locking device releases a central shaft in the unfolding mechanism, and a strap elastic mast wound on the central shaft drives the diaphragm sail fixed on the mast to be unfolded by releasing elastic potential stored in the mast. According to the invention, the diaphragm sail is unfolded to increase the cross-sectional area in the flight direction of the cube satellite, and the atmospheric resistance of the cube satellite is increased, so that the cube satellite derails quickly.

A method of estimating contact forces between the wheels of a railway wagon and a rail track, for use in determining information such as the likelihood of derailment. Accelerations of the body of the wagon are measured using motion sensors located at suitable points on the body. Forces on the side frames of the wagon are calculated based on the accelerations of the body and predetermined parameters of the body. Forces on the wheels of the wagon are calculated based on the accelerations of the body and predetermined parameters of the body. The contact forces between the wheels and the rails are then calculated based on the forces calculated for the side frames and the wheels. The calculations are carried out using an inverse model of the wagon system. Equipment which implements the method is also described.

A process and system to collect operational and conditional information on infrastructure such as railroads or pipelines, for example, is disclosed. The process includes techniques for organizing, sorting, evaluating and selecting capital investments in the infrastructure, including identification of higher risk for maintenance, and in the case of railroads for derailments, even though a specific location or portion of infrastructure may not have been identified for evaluation.

The invention discloses an elevator landing door anti-collision device, through which the problems of derailment, passenger falling and the like caused by deformation of the existing door planks are solved. The elevator landing door anti-collision device comprises a sill and a door plank which is assembled on the sill; and the technical key points are described as follows: the sill which is made of profiles is provided with a chute guiderail with an anti-falling baffle platform; the door plank is assembled on the sill through two groups of door plank sliders which are fixed on a lower end socket; each group of door plank sliders comprises two paired anti-falling sliders which consists of slider bodies and limit guide blocks wrapping the slider bodies; the slider bodies are combined and then fixedly connected with the door plank; the two limit guide blocks are combined and assembled in the chute guiderail with the anti-falling baffle platform of the sill; and under the driving of the door plank, the two limit guide blocks reciprocate along the length direction of the chute guiderail. The elevator landing door anti-collision device is simple in structure, reasonable in design, convenient for mounting and dismounting and safe and reliable for use, and has the advantages of enhancing the strength of landing doors, remarkably improving the tensile strength, abrasion resistance and anti-collision property of elevator landing doors, effectively avoiding deformation-caused derailment of door planks and eliminating the potential safety hazard of passenger falling.

The invention discloses a braking device for a railcar. The braking device is arranged on a wheel carrier of a wheel set of the railcar. The braking device for the railcar comprises a braking frame arranged on the wheel carrier, wherein the braking frame comprises a rail sleeve capable of half-encircling a steel rail; a T-shaped groove is formed in the rail sleeve; brakes fixedly connected to the rail sleeve are arranged between the inner top, the left side part, the right side part, the left bottom and the right bottom of the rail sleeve and the steel rail. The steel rail is half-encircled by the T-shaped groove of the rail sleeve, the T-shaped groove turns to the bottom side of the steel rail, the brakes are arranged on the inner side of the rail sleeve, and are positioned between the rail sleeve and the steel rail, and gaps are formed between the brakes and the steel rail when the railcar normally runs, and are pneumatically expanded to drive the brakes to be closely attached to the steel rail to encircle the steel rail from the top, the left side part, the right side part, the left bottom and the right bottom in case of emergency braking, so that the railcar is synchronously braked under equal pressure in five gears and five points in emergency, derailment and tailgating are avoided, damage to the steel rail at low gears is avoided, safety is ensured by sacrificing the steel rail at high gears, and higher reliability of braking within a visual distance is achieved.

The invention discloses a derailment safety protective device which is shaped like an inverted L. The derailment safety protective device comprises a transverse part (1-1) and a longitudinal part (1-2) which is located below one side of the transverse part (1-1) and perpendicular to the transverse part (1-1). An installation seat formed by an outwards extending wing plate (1-3) is arranged at the two sides of the transverse part (1-1) in the width direction, and bolt holes (1-4) are formed in the installation seat; the inner side face of the longitudinal part (1-2) is a stopping face (1-6). The derailment safety protective device is simple in structure, small in size, light in weight, easy to install, maintain and replace, reasonable in structural design, stable and reliable in contact mode with a rail, stable and reliable in mechanical property during contact, and capable of remarkably improving the safety protective level of a vehicle.