34 results about "RAILWAY ACCIDENTS" patented technology

The invention discloses a measurement monitoring device and method for the inclined angles of a pantograph and a carbon slider. The device comprises the pantograph, the carbon slider, and further comprises a coupler, an angle transducer, a processing module, a communication interface, a central processing unit, a stepping motor and a steel wire rope, which are connected sequentially, as well as a carbon slider rotating shaft. According to the invention, the angle transducer is connected with the pantograph and the carbon slider through the coupler, so that the angle transducer and the pantograph rotate simultaneously, and the more accurate angle is measured; meanwhile, according to the inclined angle of the pantograph, the wear condition of the carbon slider can be judged, the pantograph can be detected and replaced timely, and the pantograph scraping can be avoided; in addition, since the stepping motor is arranged, the inclined angle of the inclined angle can be adjusted properly, therefore, the service life of the carbon slider is prolonged, the cost is reduced, and meanwhile, railway accidents can be prevented effectively.

The subvacuum high speed train system has sealed tunnels set between stations and maintained in subvacuum state below 50 KPa to reduce resistance to the train and noise. The system includes closed tunnels, intermittently set vacuum pumps, train jackets on ends of tunnels, pressure maintaining doors, and tracks. The present invention has greatly reduced power consumption for pulling train, raised train speed, reduced noise, reduced environment friendly and reduced railway accidents. The present invention is suitable for electric locomotive system and magnetic suspension train system.

The invention provides a railway accident cause analysis method based on word extension LDA, and relates to the technical field of railway train operation safety analysis, and the method comprises thesteps: extracting an accident cause related theme and a theme word through employing a word extension LDA model based on the text content of a railway accident report; classifying the theme feature items according to a human factor and system classification method HFACS to form an improved HFACS-RAs model; performing text classification on the accident report by utilizing an SVM, and determiningan accident cause data set; optimizing bayesian network structure by combining chi-square test with unconstrained 0 / 1 optimization; estimating a CPT parameter of the Bayesian network by using a Logistic regression model; and determining an accident cause analysis model based on the improved Bayesian network, and calculating to obtain a key cause causing an accident result. Accident cause feature extraction is completed based on the word expansion LDA model, factors causing railway accidents and the influence degree of the factors on accident consequences are determined, understanding of the accident process is deepened, and measures are taken to prevent similar accidents from happening again.

The present invention provides a multi-attribute railway accident cause weight analysis method, including: based on the railway accident cause classification CREAM-RAs model, decomposing and encoding all railway accident reports, and establishing a multi-attribute railway accident data set MARA-D ;Based on the self-organizing map algorithm SOM and K-Means integrated clustering method for railway accidents, MARA-D is clustered and analyzed to obtain different accident clusters; according to the association rule algorithm AL-Apriori of railway accident levels, different According to the association rule analysis of the accident clusters, the strong association rules between the causes of different accident clusters are obtained; based on the strong association rules and the decision laboratory analysis method DEMATEL, the comprehensive weight of the cause is obtained, and then according to the comprehensive weight of the cause Sort by weight. This method can find out the key causes of railway accidents, and provide reference for further improving the safety level of railways.

Disclosed are a method and device for assigning a channel. The method includes: a network side measuring the reception level and travelling speed of a train mobile station, and calculating frequency deviation information about the train mobile station; with the frequency deviation information, the network side judging whether the train mobile station is entering a current serving cell or leaving the current serving cell; and according to the reception level, the travelling speed and the judgment result of train mobile station running, the network side assigning a channel to the train mobile station. The embodiments of the present invention solve the problem in the related art that call origination from a cell edge is easy to fail in the scene of high-speed train running, thereby reducing the probability of occurrence of railway accidents, improving network performance indices, increasing the degree of perception of users, and ensuring the strict requirements on network reliability from railways.

The invention discloses a guide beam walking type bridge detection and rescue work vehicle which is composed of a guide beam, a motor vehicle, a detection vehicle and a rescue vehicle. The guide beam walking type bridge detection and rescue work vehicle works under bridges. The detection vehicle and the rescue vehicle are respectively of a multi-level truss structure, and can be contracted and rotationally folded under the action of a hydrocylinder, and a lifting device is arranged inside the truss of the rescue vehicle. The detection vehicle and the rescue vehicle on the guide beam are completely contracted and folded when passing through a bridge pier, and the maximum cross sectional dimension of the detection vehicle and the rescue vehicle is within 1.1m*1.1m. On the working condition of bridge detection, the rescue vehicle is completely contracted and folded, the detection vehicle is partly unfolded, and a work platform used for bridge detection is provided. On the working condition of rescue, the detection vehicle and the rescue vehicle are completely unfolded, a door frame structure is connected to the two sides of the bridge pier in an overlapped mode, and at the moment, a winch on the rescue vehicle is located in the middle of the door frame and can conduct lifting rescue operation. The guide beam walking type bridge detection and rescue work vehicle has the functions of loading, bridge detection and lifting rescue, automatically provides power, has the capability of passing through the bridge pier, is wide in detection range, can be applied to daily maintenance work of the bridge conveniently and effectively, and can also be used as a device for railway accident emergency rescue.

The invention discloses a switch machine state monitoring device, a monitoring system and a monitoring method. The switch machine status monitoring device includes: an information collection module, which is used to collect component status information of the switch machine; the component status information of the switch machine includes action lever status information, display lever status information, and locking device status information. At least one of information, contact seat state information, bearing seat state information, and electrical circuit state information; an information processing module, the information processing module is electrically connected to the information collection module, and is used to connect the components of the switch machine The status information is processed and sent to the terminal to instruct the terminal to determine the working status of the switch machine. The switch machine state monitoring device, monitoring system and monitoring method provided by the present invention can monitor the components in the switch machine, such as the action lever, the display lever and the electrical circuit, so as to prevent the components of the switch machine from malfunctioning and ensure the safety of the switch machine. Normal work, reduce the probability of railway accidents.

The invention discloses a vehicle-mounted quick installation rescue elevator, and belongs to the technical field of G-series high-speed train rescue equipment. The vehicle-mounted quick installation rescue elevator comprises a vehicle-mounted platform, a lifting cage, a power unit, a top segment, a turnover mechanism, a base segment, one or more standard segments, a pallet car and a crane. The power unit and the lifting cage are connected into a whole. The lifting cage is installed on the base segment, and a pinion of the power unit is engaged with a rack on the side face of the base segment to form a gear and rack pair. In the installation state, the standard segments and the top segment are moved to a set area under the effect of the pallet car and then are sequentially hoisted to the top of the base segment through the crane. The base segment, the standard segments and the top segment can be in butt joint in sequence to form a vertical channel, and racks of the base segment, the standard segments and the top segment are in butt joint to form a long rack engaged with the pinion of the power unit. By adoption of the vehicle-mounted quick installation rescue elevator, personnel canbe vertically transferred to the ground efficiently, conveniently and comfortably from a bridge floor in aerial railway accidents, and the vehicle-mounted quick installation rescue elevator is mainlysuitable for aerial railways with the bridge floor heights being within 20m.

The invention provides steel for a freight train connecting piece and a preparation method thereof. The steel for the freight train connecting piece comprises the following chemical ingredients in percentage by mass: 0.24-0.28 percent of C, 0.20-0.40 percent of Si, 1.20-1.50 percent of Mn, 0.50-0.65 percent of Cr, 0.45-0.65 percent of Ni, 0.20-0.30 percent of Mo, 0.03-0.05 percent of Ti, 0.025-0.040 percent of Al, less than or equal to 0.020 percent of S, less than or equal to 0.020 percent of P, less than or equal to 0.15 percent of Cu, less than or equal to 15 ppm of O, less than or equal to 1.5 ppm of H and the balance of Fe and inevitable impurities. According to the invention, as the steel for the freight train is adopted, the mechanical properties of strength, low-temperature impact performance, fatigue life and the like of the connecting piece can be improved, so that the development of railway vehicles towards the high-speed heavy-load direction can be improved, and railway accidents caused by the connecting piece are reduced or avoided.

The invention discloses a visual measurement-based auxiliary synchronous coordination control method for double-vehicle cranes in railway rescue, which is used to assist the synchronization problem of double-vehicle cranes in emergency rescue of railway accidents; using a synchronization terminal, a visual measurement terminal, and a background server, through visual measurement The spatial three-dimensional coordinate data information of the object at the accident site is obtained in real time, and the background server will process, calculate, and solve the data information to formulate a real-time hoisting plan, which is for the crane operator when the load is uneven when the two cranes are hoisting together. Provide guidance.

The invention discloses a vehicle-mounted quick installation rescue elevator, and belongs to the technical field of G-series high-speed train rescue equipment. The vehicle-mounted quick installation rescue elevator comprises a vehicle-mounted platform, a lifting cage, a power unit, a top segment, a turnover mechanism, a base segment, one or more standard segments, a pallet car and a crane. The power unit and the lifting cage are connected into a whole. The lifting cage is installed on the base segment, and a pinion of the power unit is engaged with a rack on the side face of the base segment to form a gear and rack pair. In the installation state, the standard segments and the top segment are moved to a set area under the effect of the pallet car and then are sequentially hoisted to the top of the base segment through the crane. The base segment, the standard segments and the top segment can be in butt joint in sequence to form a vertical channel, and racks of the base segment, the standard segments and the top segment are in butt joint to form a long rack engaged with the pinion of the power unit. By adoption of the vehicle-mounted quick installation rescue elevator, personnel canbe vertically transferred to the ground efficiently, conveniently and comfortably from a bridge floor in aerial railway accidents, and the vehicle-mounted quick installation rescue elevator is mainlysuitable for aerial railways with the bridge floor heights being within 20m.

The invention provides an early warning processing device and a method for train ground temporary information. The device comprises a main control circuit, a speed measuring circuit, a ground temporary information reading circuit, a speech reminding circuit, a train control circuit, a power supply circuit, a clock circuit and a storage circuit, wherein the main control circuit is connected with the speed measuring circuit, the ground temporary information reading circuit, the speech reminding circuit and the train control circuit respectively; the ground temporary information reading circuit comprises a radio frequency card, an RFID reader and a photoelectric coupling pipe; and one end of the photoelectric coupling pipe is connected with the RFID reader, while the other end is connected with the main control circuit. The device adopts RFID technology, and guarantees the accuracy and safety of data reading. The device has the advantages of stable circuit performance, strong practicability and high cost-performance ratio. The method is simple and scientific, plays a great role in actual application, effectively protects the safety of trains and people property, and avoids nicious railway accidents.