975 results about "Railway line" patented technology

The invention discloses a railway line inspection system. The railway line inspection system comprises a coming and going train information acquisition subsystem, a data and fault processing subsystem, a flight control subsystem and a data acquisition subsystem. The coming and going train information acquisition subsystem determines coming and going train information of a railway line and sends the coming and going train information to the data and fault processing subsystem. The flight control subsystem controls the flight track and attitude of an unmanned aerial vehicle and the action of avoiding coming and going trains. The data acquisition subsystem is arranged on the unmanned aerial vehicle, acquires field data of the railway line and sends the field data to the data and fault processing subsystem to be processed, wherein the field data comprises radar scanning data and field image data of the railway line. The data and fault processing subsystem receives and analyzes the field data of the railway line and determines the fault type and generation position. The technical problems that an existing railway line inspection mode is single in means and low in reliability, affects normal train driving and cannot meet the requirements for high-speed railway operation safety can be solved.

The invention relates to a construction method for an underground box culvert of an existing railway line which is characterized in that a first-dig last-push construction method is adopted; a temporary beam foundation is firstly constructed and a working pit is dug; a D-shaped temporary beam and a cross beam are erected to reinforce the existing railway line; a foundation pit on the jacking section is dug; the box culvert prefabricated in the working pit is integrally jacked by utilizing a hydraulic jack for the back constructed in advance; and the displacement of the box culvert is controlled by a positioning beam. The invention solves the construction difficulties in the prior art, overcomes the phenomena of head raise, head stab, over head and the like of the box culvert during jacking construction, has the advantages of great technical superiority, line safety guarantee and construction speed acceleration, and is suitable for the box culvert construction of underpasses, bridges and culverts of the existing railway underpass line on railway.

The invention discloses an existing railway line retesting method based on the on-board laser radar technology. Firstly, control marks are arranged along a railway to be tested at preset intervals; secondly, position coordinates of the center point of each control mark on a railway engineering coordinate system are measured; thirdly, laser point cloud data and image data of rails, railway equipment and facilitates (such as annunciators, turnouts and contact net rods), terrain around the railway and the control marks along the railway are obtained, and colors of the image data are assigned to corresponding laser point cloud data; fourthly, the obtained colorized laser point cloud data are subjected to precision refining treatment with the position coordinates of the control marks as reference points, so that errors in the colorized laser point cloud data are eliminated; fifthly, rail surface linear laser point data are extracted from the colorized laser point cloud data subjected to the precision refining treatment; and sixthly, the line type of the existing railway is restored through the rail surface linear laser point data. Information of the existing line is accurately obtained under the condition that operation of the railway is not influenced.

The invention provides a railway side slope crag rockfall monitoring and warning system based on a fiber grating sensing technology. The system provided by the invention comprises on-site monitoring equipment and monitoring control equipment. wherein the on-site monitoring equipment is used for monitoring the rock mass deformation and looseness of an active network protection zone of a railway line side slope and monitoring crag rockfall by using as flexible passive network as a monitoring carrier; the monitoring control equipment is connected with the on-site monitoring equipment; the on-site monitoring equipment comprises a rock mass deformation and looseness monitoring subsystem, a rockfall broken network monitoring and warning subsystem and a rockfall state monitoring subsystem which are connected with the monitoring control equipment; and the monitoring control equipment comprises a fiber terminal box (9), a fiber grating signal demodulator (10), a network switch (11) and a computer system (12) which are sequentially connected. According to the invention, the accuracy of a railway crag rockfall warning and monitoring technology is enhanced and the train transport operation safety is better guaranteed.

The invention discloses a railway line inspection method. Traveling train information on a railway line is determined by a traveling train information acquisition subsystem and the traveling train information is transmitted to a data and fault processing subsystem. A flight control system is used for controlling a light track and a flight posture of an unmanned aerial vehicle and avoiding movement of a traveling train. A data acquisition subsystem is arranged on the unmanned aerial vehicle and is used for acquiring field data of the railway line and transmitting the field data to the data and fault processing subsystem to be processed; and the field data comprises radar scanning data and field image data of the railway line. The data and fault processing subsystem is used for receiving and analyzing the field data of the railway line and determining types and occurrence positions of faults. With the adoption of the railway line inspection method, the technical problems of an existing railway line inspection manner that the measure is single, the reliability is low, normal traveling is influenced, and requirements on operation safety of high-speed railways cannot be met can be solved.

The invention discloses an aerobic-anoxic-anaerobic integrated module type fast denitrogenation reactor for sewage and a treatment method thereof and relates to an integrated sewage treatment device, which is particularly suitable for fast integrated treatment for sewage by denitrogenation technology. The device is designed for solving the problems of complex process, high treatment expense, additional carbon source and regulation of outflow pH, difficult zero discharge and the like existing in aerobic-anoxic-anaerobic denitrogenation sewage treatment. Aerobic-anoxic-anaerobic processes are technically integrated to enable sewage to be always in an alternate aerobic-anoxic-anaerobic environment; an organic carbon source, organic nitrogen and total phosphorus are distributed reasonably to avoid shortage of carbon source during denitrogenation, so that total nitrogen and total phosphorus are converted effectively, the effect of denitrogenation and dephosphorization are improved, and discharged water reaches first discharge standard of Integrated Wstewater Discharge Standard (GB8978-1996). The device is used for treating municipal domestic sewage, especially sewage of middle and small stations along railway lines.

The invention relates to a high-performance environment-friendly polyurethane waterproofing paint and the preparing process, in particular to a polyurethane waterproofing paint applied to passenger transport railway line. The paint is prepared by mixing constituent A and constituent B by a certain ratio. The constituent A includes polyether polyols, the weight proportion of which is 64.5-74.5 percent; modifying liquefied methane diphenyl diisocyanate, the weight proportion of which is 25-35 percent; storage stabilizer, the weight proportion of which is 0.1-1 percent. The constituent B includes liquid filling, the weight proportion of which is 45-55percent; inorganic powder filling, the weight proportion of which is 30-40 percent; firming agent, the weight proportion of which is 10-20 percent. The paint of the invention uses the modifying liquefied MDI as the material of the constituent A, ensures the production process to be more environment-friendly, ensures the operation to be more simple, and can save more cost, can meet the indexes of high strength and high percentage elongation as the paints is obtained.

The invention provides a link covering double-link mobile communication system and a wave beam diversity and relay switching method. The link covering double-link mobile communication system comprises a plurality of cells of a service area, wherein every two adjacent cells are partially overlapped, a base station is arranged inside each cell, a vehicle-mounted mobile station moving along with a vehicle at high speed is communicated with the base stations through a rail mobile communication network achieving link covering along a railway line, the vehicle-mounted mobile station comprises a combiner, a front wireless link and a rear wireless link, the front wireless link and the rear wireless link are arranged on the combiner and located at the two ends of a train, diversity is conducted on data received by the front wireless link and the rear wireless link, and then the data are transmitted to a service function unit. The system uses the double-link vehicle-mounted mobile station with a self-adaption antenna and a corresponding wave beam diversity and relay switching scheme, a relay switching process belongs to 'first connection and then interrupt' soft switching, and cell-crossing relay switching reliability is enhanced.

The invention relates to a high-molecular polymer dust suppressant compound and a preparation method thereof. The high molecular polymer dust suppressant compound consists of a cellulose high-molecular compound, a polyoxyethylene type non-ionic surface active agent, glycerol, calcium chloride and water. The dust suppressant compound can form a curing layer on various dust-raising surfaces, bonds powder, particles and large objects on the dust-raising surfaces together and accordingly can effectively restrain dust raise. In addition, a dust suppressant does not contain heavy metal, is free of toxic or side effect, does not cause secondary pollution, is low in cost and convenient to spray and has great significance on environmental pollution, coal yard pollution, building construction site pollution, railway slope protection and the like along railway lines.

The invention provides a temporary speed-restricting command sending method and device of a C3 system. The method comprises the following steps: a TSRS (temporary speed-restricting server) receives a temporary speed-restricting command issued by a CTC (centralized control); and a TSRS performs automatic splitting according to starting points in speed-restricting areas, final points in the speed-restricting areas and the speed-restricting control range of all TCCs (train control centers) and/or RBCs (radio blocking centers) on railway lines corresponding to the line numbers, and sends corresponding speed-restricting commands to all the relevant TCCs and/or RBCs, C2 speed-restricting information is transmitted to C2 vehicle-mounted devices by the TCCs through an active transponder, and C3 speed-restricting information is transmitted by the RBCs through a GSM-R (global system for mobile communications for railway). According to the invention, the TSRS is arranged in a railway system, andacquires the temporary speed-restricting commands by virtue of being connected with the CTC, the temporary speed-restricting commands are distributed to the relevant TCCs and RBCs to realize automatic distribution of all the TCCs and RBCs in the whole-line control range and the centralized management of the train control speed-restricting commands; and the C2 and C3 speed-restricting commands canbe set and canceled simultaneously by the TSRS so as to contribute to guaranteeing the consistency of the two train control systems.

A scheduling system and method for moving plural objects through a multipath system described as a freight railway scheduling system. The scheduling system utilizes a resource scheduler to minimize resource exception while at the same time minimizing the global costs associated with the solution. The achievable movement plan can be used to assist in the control of, or to automatically control, the movement of trains through the system. Similar movement planners exist for moving trains in yards or terminals. Coordination is achieved and system efficiency improved by interfacing the line of road and yard planners.

The invention discloses an AC electrified railway traction in-phase power supply device based on a YNd11 connection transformer, the traction transformer of the device is a three-phase transformer (T1) connected in YNd11, and the three primary sides of the transformer (T1) in a YN connection The three phases A, B, and C are connected to the high-voltage public power grid, and the low-voltage side terminals (a, b, c) of the transformer are connected to a power flow controller (IC), and the terminals a and b are connected to the electrified railway catenary (TR) . The device can realize the same-phase power supply for the entire railway line without phase separation, and the power supply voltage is stable, ensuring the high-speed and heavy-load operation of the locomotive; at the same time, the device can eliminate the negative sequence, reactive power and harmonics of the railway traction load on the electric energy of the public grid impact, low cost, and easy implementation.

The invention discloses a method for determining strut positions of a contact network of a special railway line for passenger traffic, solving the problem of low accuracy in the prior art for surveying and lofting the strut positions of the contact network. The method comprises the following steps of: obtaining the coordinates of all CPIII points to serve as survey datum for railway line and related line parameters under a coordinate system of a foundation pile control network CPIII; when a central point C of the railway line is located in a linear, smooth curved and round curved railway lines, respectively calculating the coordinates of the central point C of the railway line; and lofting the coordinates, measuring a distance between the point C to a strut P to serve as a strut side face limit value by using a steel measure tape on a CP linear direction vertical to a railway central line, so as to determine the specific position of the strut P, wherein a rail surface elevation H, calculated in the second step, of the central point C of the railway line is taken as a reference in survey and lofting. By adopting a CPIII coordinate measurement construction method, the advantages of greatly accelerating measurement speed, improving measurement precision and saving cost are achieved.

The present invention discloses a monolithic prefabricated construction method of post-tensioned prestressed concrete box grider, which mainly comprises the following steps: moulding board, reinforcing steel bar and embedded part installation, grider concrete packing, grider concrete steaming or natural maintenance, moulding removal, tension, and postorder construction, etc, wherein, the reinforcing steel bar adopts the technologies of centralized prewing, and overall hoisting, and the tension step adopts three tension techniques of pretension, first tension and final tension; the internal die adopts a hydraulic internal die system, and the grider concrete packing step adopts the construction proposal of concrete centralized mixing, and pipeline pumping pouring, which adopts a decentralized and continuous process, and pours gradually from two ends to the middle so as to realize one-though moulding. The construction method of the present invention is suitable for monolithic prefabricated construction of prestressed concrete box grider with 32m / 900t big span and large tonnage in the special railway line for passenger transport.

The invention discloses a railway line foreign substance detection method and system based on radar and high-definition image analysis. In the method, the advantage that a microwave radar senses a moving object in real time is fully utilized, a real-time high-definition video stream of the moving object is acquired by use of high-definition video equipment; then the moving object is analyzed in combination with the advantage and the real-time high-definition video stream so as to judge whether the moving object is an foreign substance object needing to be warned. Warning in different grades can be performed for sizes and types of different foreign substance objects so as to improve the detection precision and the response speed for an invasive foreign substance. Compared with the prior art, according to the railway line foreign substance detection method and system based on radar and high-definition image analysis, the effect that the invasive foreign substance in a railway line is accurately sensed and warned in real time can be implemented, the omission detection rate and the false alarm rate are effectively reduced, a major accident caused by invasion of the foreign substance isavoided, and the method and the system have good application prospects in the field of railway line safety.

Elastomeric pads are shown for positioning on top of railroad ties. Pre-cast concrete panels that are commonly provided at railway grade crossings between and alongside the rails rest on the pads. The pads may be extruded from a variety of natural or synthetic elastomeric materials. The pads include a panel or body formed of the elastomeric material with an exterior surface. A synthetic, polymeric coating is applied to at least selected portions of the exterior surface of the elastomeric body. The coating provides improved properties which allow more standard elastomers to be utilized for the main body of the component. The coatings can also be applied to railroad tie boots to provide increased ozone resistance.

The invention discloses a method for deploying strong wind monitoring points on a rapid transit railway, comprising the following steps: analyzing the gale distribution characteristics and carrying out statistics on the wind speed frequency distribution under each wind direction based on the information of wind speeds, wind directions and the like of weather stations along and around the rapid transit railway line, and deploying basic monitoring points; establishing the correlationship of winds fields between any two monitoring points along the railway line under complicated terrains based on the geographic and geomorphic information, simulating the wind fields along the rapid transit railway line by adopting the computational fluid dynamics (CFD) method theory and method, and deploying interpolated monitoring points; and simulating the wind fields of special road sections, and deploying special monitoring points by combining with wind tunnel tests. The method provided by the invention overcomes the defects of high cost, strong subjectivity, low accuracy and the like in the traditional method which gives priority to field survey and qualitative analysis, realizes deployment of strong wind monitoring points in rapid transit railways under various weather types and environmental conditions, has high simulation accuracy and low monitoring point deploying cost, and provides support for effective monitoring and safety running of rapid transit railways.

The invention discloses a device and a communication method thereof for achieving a distributed type radio cell. The method comprises the following steps: after being received by a radio frequency remote unit, an uplink signal sent by a mobile terminal is forwarded to a base band unit; after being received by the base band unit, the uplink signal is resolved and synthesized, and sent to a base station controller; the base station controller sends a downlink signal to the base band unit; after being received by the base band unit, the downlink signal is resolved, and then distributed to a plurality of radio frequency remote units; and the radio frequency remote units forward the downlink signal to the mobile terminal through an aerial interface. The invention expands the effective coverage scope of the cell through the distributed type collaboration of the radio frequency unit at the remote end, thereby prolonging the sojourn time of a high speed mobile terminal passing through the cell, improving the measuring and switching effects of the mobile terminal passing through an adjacent cell, improving the communication quality of a mobile user, and satisfying the mobile communication demands on the occasions like express railway lines in a pertinence manner and the like.

The invention discloses a flexible ground automatic neutral-section passing system of an electrified railway. The flexible ground automatic neutral-section passing system of the electrified railway comprises a train position recognition subsystem, an electric energy characteristic monitoring subsystem and a power regulation subsystem. The train position recognition subsystem is used for recognizing the position of a train on a railway line and providing the position for the power regulating subsystem. The electric energy characteristic monitoring subsystem is used for monitoring electric energy characteristics of all power supply sections of a railway power supply network, and providing the power characteristics for the power regulation subsystem. The power regulation subsystem comprises power regulating units. Each power regulating unit comprises a first power regulation arm and a second power regulation arm, wherein the first power regulation arm is connected with the first power supply section of the power supply network, and the second power regulation arm is connected with a neural section adjacent to the first power supply section. The flexible ground automatic neutral-section passing system of the electrified railway has the advantages that an electric locomotive can pass the neutral section safely and stably without reducing the load in an electrified mode, locomotive protection parameters do not need to be modified, and the adaptive capacity is high.

The invention discloses a method for enabling passengers to get on or off a train without stop of the rail train during operation. The method includes that before the train arrives at a railway station, a railway is divided into two railways, wherein a first railway line A does not lead to the railway station, and a second railway line B leads to the railway station; the train is also divided into two trains before arriving at the railway station, a train (1) passes through the railway station alongside the station along the line A, passengers who want to get off the train enter a train (2) in advance and pull in along the line B, and the passengers can get off the train after the train (2) stops completely; and passengers who want to get on the train at this stop get on a train (3) stopping at a platform in advance, and the train (3) gets started while the train (1) passes through the railway station, merges into the line A from the line B to travel after leaving the railway station, speeds up to pull up to the train (1), and then is connected with the train (1) to form a same rail train. Thus, the passengers who want to get on the train eventually get on the train. The method for enabling the passengers to get on or off the train without the stop of the rail train during the operation can enable the passengers to quickly arrive at a destination, energy source can be saved, the wear for rail train brake parts is reduced, and the service life of the rail train is prolonged.

The present invention discloses a train control system, comprising a vehicle on board controller VOBC and peripheral equipment which are interconnected. The VOBC is used for controlling the normal operation of a train, monitoring traffic safety and train driving, and controlling the train to perform cross-line operation between the city rail transit line and the intercity railway line; and the peripheral equipment communicates with the VOBC. According to the embodiment of the invention, the train can be controlled to perform cross-line operation between the city rail transit line and the intercity railway line by the VOBC, so that the requirement on collinear running of the city rail transit and the intercity railway is met.

The invention relates to an automatic neutral-section passing device for an electric locomotive, which comprises a detection and recognition system, a control system and an executing system connected with a contact network through a wire, wherein the detection and recognition system comprises two pairs of wheel sensors symmetrically arranged in a front and a rear set distances from the neutral region of a railway line and one pair of wheel sensors arranged in the midpoint of the neutral region; each pair of wheel sensors are respectively positioned at two sides of the rail, the output of each wheel sensor is connected with the control system, and each wheel sensor is provided with two contacts; and one detection region is arranged between the front pair of wheel sensors and the midpoint of the neutral region, and the other one detection region is arranged between the rear pair of wheel sensors and the midpoint of the neutral region. By adopting the wheel sensors with double contacts, the movement direction of the electric locomotive can be rapidly judged; and standby wheel sensors are provided, which provides the reliability of the whole automatic neutral-section passing device.