264 results about "Rail profile" patented technology

The invention relates to the technical field of railway track engineering, in particular to a heavy haul railway steel rail optimization method, device, equipment, medium and product, and the method comprises the following steps: determining a stress concentration area of a heavy haul railway based on a fatigue crack distribution position and dynamic observation data on the surface of a steel rail of the heavy haul railway; curve fitting processing is conducted on the steel rail profile of the stress concentration area, and fitting profile control parameters of the fitted steel rail profile are obtained; inputting the fitting molded surface control parameters and the wheel parameters of the truck into a pre-constructed vehicle-track multi-body dynamic model to obtain multiple pieces of special molded surface data, and obtaining fatigue crack initiation life corresponding to the special molded surface data based on the special molded surface data; and on the basis of the fatigue crack initiation life, screening molded surface data meeting a preset requirement from the special molded surface data to obtain target molded surface data, and determining the steel rail molded surface corresponding to the target molded surface data as a target steel rail molded surface. The determined target steel rail profile can prolong the service life of the steel rail.

The invention relates to the technical field of digital twinborn simulation, in particular to a digital twinborn simulation system for a sleeper maintenance period, which comprises a multi-source data integration module for integrating point cloud data of a laser scanner and a photogrammetric image sequence of an unmanned aerial vehicle, extracting steel rail profile point position coordinates and sleeper position geometric parameters of a sleeper, and generating a digital twinborn simulation result; and generating an integrated structure attribute set. According to the invention, by integrating the point cloud data of the laser scanner and the photogrammetric image sequence of the unmanned aerial vehicle, the space coordinates of the steel rail profile and the geometric parameters of the sleeper are obtained, and a unified space coordinate system is constructed, so that the accuracy and stability of data matching are improved; and the displacement vector and attitude difference between the actually measured data and the digital model are taken as an adjustment basis, so that the adjustment operation of the steel rail node coordinate and the sleeper rotation matrix is more in line with the actual track facility state, the consistency of the simulation geometric structure and the actual track structure is realized, and the credibility of model simulation analysis is improved.

The invention discloses a method and system for detecting alternate side grinding of a steel rail, and the method comprises the steps: obtaining a three-dimensional profile of a steel rail profile in an abnormal shaking region of a subway, and generating an alternate side grinding waveform at a side grinding position according to the three-dimensional profile of the steel rail; and according to the alternate side grinding waveform, the occurrence position of the alternate side grinding phenomenon of the steel rail is determined through the side grinding recognition model. The method has remarkable significance in quantitative evaluation of the steel rail alternate side abrasion phenomenon, the measurement accuracy is improved, and rapid and efficient recognition of steel rail alternate side abrasion is achieved through the side abrasion recognition model. In addition, important technical support can be provided for subway operation maintenance and safety management.

The invention provides a rail vehicle dynamics simulation method and system based on parameter change probability distribution, and the method comprises the steps: obtaining a variable combination sample through a traversal combination mode based on a wheel rail profile of a to-be-evaluated motor train unit trailer and a variable Latin hypercube sampling sample, the variable Latin hypercube sample is constructed by test data of a plurality of bogie system random variables of different types; according to the variable combination sample, assigning corresponding elements in a dynamic simulation model to obtain a new dynamic simulation model; and performing dynamic simulation on the to-be-evaluated motor train unit trailer according to the new dynamic simulation model to obtain a dynamic evaluation index result corresponding to the to-be-evaluated motor train unit trailer. According to the method, the data calculation amount in the simulation process is reduced.

The invention provides a railway minor radius curve asymmetric steel rail profile robustness optimization design method, and relates to the technical field of steel rail profile optimization, and the method comprises the steps: obtaining a plurality of groups of random samples; constructing a coupling dynamics simulation model of the vehicle-rail system according to the random sample and outputting key indexes, wherein the key indexes comprise wheel-rail force, a derailment coefficient, a wheel load shedding rate and a steel rail abrasion loss; calculating according to the key indexes and a preset abrasion model to obtain accumulated abrasion depth data of the steel rail under different random variable combinations; constructing a dynamic response prediction model according to the random sample, the key index and the steel rail accumulated abrasion depth data; taking the random sample as an input value of the dynamic response prediction model to obtain a probability density distribution result, and performing sensitivity analysis to obtain a sensitive variable; and generating a Pareto frontier solution according to the sensitive variable and a preset design variable, and fitting to obtain a steel rail profile optimization design scheme. According to the method, the steel rail profile optimization solution can adapt to a complex and random operation environment.

The utility model relates to the technical field of steel rail profile grinding equipment, in particular to a multi-degree-of-freedom angle-adjustable steel rail profile grinding trolley which comprises a box body connected to a walking and track jacking device in a sliding mode and a storage battery installed in the box body. The box body is provided with a holder rotating device for adjusting the grinding angle and a transverse rotating mechanism, the transverse rotating mechanism is provided with a four-connecting-rod lifting device for adjusting the grinding height, and the four-connecting-rod lifting device is provided with a grinding and detecting unit for grinding the surface of the steel rail. All the mechanisms are matched with one another, the profiles of all positions of the steel rail can be effectively ground, the trolley can better adapt to different parts and profiles of the steel rail through the adjustable design of the multi-degree-of-freedom angle, accurate grinding is achieved, and the working efficiency is improved. And the adjustable design allows the trolley to quickly adjust the grinding angle and force under the condition of not interrupting the operation, so that the time loss caused by adjusting the equipment is reduced, and the efficiency of the grinding operation is improved.

The invention provides a rapid fusion method and device for steel rail profile data. The method comprises the following steps: acquiring a plurality of steel rail profile images acquired from multiple view angles; calculating a first weight of each steel rail profile image based on pixel intensity; calculating a second weight of each steel rail profile image based on a global gradient; determining a weight item of each steel rail profile image according to the first weight and the second weight of each steel rail profile image; according to the weight item of each steel rail profile image, pyramid fusion is carried out on each steel rail profile image, and a fused image of each steel rail profile image is obtained; according to the invention, the shape prior of the steel profile can be fully utilized, and the speed and quality of steel rail profile image fusion are improved.

The invention discloses a grinding profile design method for a front steel rail of a high-speed turnout. The method comprises the steps that firstly, the profile and diseases of the front steel rail of the high-speed turnout are measured and collected; discretization processing is conducted on the measured steel rail profile, and according to the deviation obtained through calculation, the steel rail polishing design profile under various kinds of abrasion is generated according to an optimization fitting method and a polyline polynomial overall fitting method. Turnout models are established on the basis of different designed steel rail polishing profiles, a vehicle-turnout system coupling dynamics analysis model is established on the basis of the turnout models, and the safety of the designed profiles is verified. According to the field actual measurement profile, the profile is compared with the designed polishing profile, the disease condition is considered, and the appropriate steel rail polishing profile is selected according to the minimum polishing amount principle. By means of the method, different polishing design profiles can be generated according to different lines, different turnouts and different abrasion and damage conditions, and the designed profiles meet the dynamic performance standard of national railway groups.

The utility model relates to the technical field of steel rail profile grinding, and solves the problem that an existing grinding instrument can only be used for grinding a certain part of a steel rail. The angle-adjustable steel rail profile grinding trolley comprises a rail jacking device which is arranged on a rail and synchronously drives a structure connected with the rail to automatically walk on the rail, a box body which is installed on the rail jacking device and builds a bearing space, and a linkage device. The base is arranged at one end of the box body, extends in the direction away from the box body and is used for building a foundation for angle rotation, the grinding and detecting unit is connected with the box body through a linkage device and acts on a steel rail in multiple directions under the action of the linkage device, and the linkage device comprises a transverse rotating mechanism and a lifting device. Wherein the transverse rotating device comprises a steering cradle head, a connecting block connected with the steering cradle head and a movable support, and the steering cradle head is arranged on the box body and is matched with the movable support to adjust the grinding direction of the grinding and detecting unit.

The invention discloses a profile alignment-based steel rail abrasion real-time discrimination method and model, and the method comprises the steps: building a steel rail standard profile database model which is used for receiving actual measurement profile data and carrying out the real-time overlapping display; acquiring a point with the minimum vertical coordinate of the outer contour of the steel rail profile from the actually measured profile data, and overlapping the point with the minimum vertical coordinate with the reference point of the standard profile to realize primary alignment of the profile; calculating a perpendicular bisector at the rail waist of the actual measurement profile, and enabling the perpendicular bisector to coincide with the center line of the standard profile to finish rough alignment of the profile; and calculating the center point of the actually measured profile rail web, performing fitting processing to obtain a fitting center line, and enabling the fitting center line to coincide with the standard profile center line to complete profile fine alignment. According to the method, the precision of profile alignment is effectively improved, meanwhile, the influence of profile form errors on an abrasion algorithm is reduced, and then the problem of jumping during alignment of the actually measured profile and the standard profile is solved.

Systems and techniques for generating track geometry data (TGD) for railroad track analysis. In embodiments, rail profile data for each of the rails of a track may be obtained at regular intervals as a vehicle carrying the system traverses the track. The rail profile data may be validated, and reference points on the profiles of each of the rails corresponding to specific geometric features of the rails may be identified. The rail profile data may be filtered and processed to generate track geometry data. The track geometry data may include data for a plurality of data channels. The track geometry data may be transmitted to a backend system receives for further processing to determine rail defects, and to generate notifications and alerts based on the determined defects. The system utilizes machine learning algorithms and models for defect detection and validation.

The invention provides a steel rail profile optimization design method based on a polishing index, and belongs to the technical field of railway engineering. The steel rail profile optimization design method comprises the following steps: collecting a plurality of actually measured profiles of a steel rail subjected to field polishing and acceptance inspection; calculating deviation values of the actually measured profiles relative to the target profile at different polishing angles; on the basis of the deviation values at the different polishing angles, the profile adjustable degree at the different polishing angles is calculated; and setting optimization constraint conditions according to the profile adjustable degree and the wheel-rail contact geometrical relationship, and calculating the optimized profile of the steel rail. According to the steel rail profile optimization design method, deviation in the polishing process can be effectively recognized and quantified, the profile adjustment degree under different polishing angles is considered, optimization constraint conditions are set in combination with the wheel-rail contact geometrical relationship, the optimized steel rail profile is designed, the negative influence of polishing deviation on the steel rail performance is reduced, and the polishing precision is improved. The wheel-rail contact relation is optimized, and the running stability and riding comfort of a train are improved.

A device for opening and closing curtains includes a curtain rail with at least one channel open in the curtain-to-be-hung direction and at least one curtain holding part held movably in the channel in the channel longitudinal direction by guides, for attaching the curtain. The guides are adjustable along the rail via an electric motor drive by a drive mechanism. A laterally-arranged, window-like opening is made in at least one section of the rail profile cross-section, which provides access from outside the rail at least to the channel for the drive mechanism. A structural unit for the electromotive drive and / or a deflection of the drive mechanism is insertable into this opening and fixable therein laterally on the rail for passing the drive mechanism through the region for the electromotive drive and / or the deflection. Also, a method connects an electromotive drive and / or a deflection to the rail profile cross-section.

A support rail for luminaires or electrical units (60) has a support rail profile (50), which encloses an elongated receiving space, along with at least one busbar (55), arranged in the receiving space, with contactable conductors (58), wherein the support rail (50) further has, on its outside, display means (10) for visually representing the function of the conductors (58).

The utility model discloses an automatic curtain rail assembly which comprises a first fixing seat and a second fixing seat, an inner rail section bar and an outer rail section bar are arranged between the first fixing seat and the second fixing seat, and the inner rail section bar and the outer rail section bar are movably connected in a sleeved mode. The first fixing seat is connected with the outer rail profile, the second fixing seat is connected with the outer rail profile, and the device further comprises a first guide assembly and a second guide assembly; the first guide assembly is fixedly connected with the inner rail profile, and the first guide assembly is movably connected with the outer rail profile; the second guide assembly is fixedly connected with the outer rail profile and movably connected with the inner rail profile. The rail assembly is novel in design, smooth opening and closing and height adaptability of the curtain are guaranteed, and intelligent home experience is improved.

The present invention discloses a method for assembling guide rail steel bars for linear modules, comprising the steps of S1: forming a mounting groove with a trapezoidal longitudinal section on the inner wall of the guide rail profile, S2: inserting the trapezoidal guide rail steel bar into the mounting groove from the end of the mounting groove, S3: using a jig to press the upper portion of the mounting groove opening on the inner wall of the guide rail profile to deform it, S4: the deformed portion of the upper portion of the mounting groove opening presses the guide rail steel bar into the mounting groove, and S5: grinding the surface of the guide rail steel bar. The assembly method of the present invention reduces the secondary processing steps of the mounting groove, and also reduces the steps of fixing the guide rail steel bar in the mounting groove with glue, which can improve the assembly efficiency of the guide rail steel bar and the guide rail profile, thereby improving the overall assembly efficiency of the linear module, and can also ensure the accuracy of the linear motion of the slide of the linear module. The assembly method of the present invention has simple steps and high assembly efficiency, and is suitable for large-scale promotion.

Systems and techniques for railway track monitoring and defect detection. In embodiments, a system captures and processes rail profile data for detecting defects on a railroad track. An on-board rail profile capture system, mounted to a railroad vehicle, captures rail profile data at regular intervals as the vehicle traverses the track. The system includes profile capture sensors and an inertial measurement unit to capture rates and angles of the vehicle's orientation. A main computer receives the rail profile data and generates track geometry data. A backend rail profile processing system receives the track geometry data, processes it to determine rail defects, and generates notifications and alerts based on the determined defects. The system utilizes machine learning algorithms and models for defect detection and validation.

The invention provides an equivalent taper correction calculation method and system based on wheel rail profile data, and relates to the technical field of motor train unit application and maintenance, and the method comprises the steps: collecting profile coordinate data of wheels, wheel diameters and distance measurement in wheel pairs through machine tool measurement equipment, and obtaining standard rail profile coordinate data and a rail gauge according to the type of a steel rail; carrying out secondary interpolation and smoothing processing on the wheel rail profile coordinates by adopting a spline function to generate wheel rail profile data; the equivalent taper is calculated through a nonlinear differential equation integral algorithm, and a relation curve of the equivalent taper and the transverse movement amount is finally solved; interpolation processing is conducted on the relation curve of the equivalent taper and the transverse movement amount, final correction is conducted on the nominal equivalent taper through an origin symmetry correction algorithm, and a corrected equivalent taper value is obtained. The method has the beneficial effects that the measurement precision of the equivalent taper is improved, the wheel turning repair strategy is optimized, the operation safety and stability of the motor train unit are guaranteed, and the maintenance cost is reduced.

The utility model discloses a steel rail profile measuring instrument with a composite sealing structure, which is characterized in that seven sealing structures are designed on an existing steel rail profile measuring instrument, an O-shaped sealing ring is arranged between a bottom cover and a main shell, and a key board made of soft materials is fixedly attached to the main shell. An O-shaped sealing ring is installed between the charging communication interface and the main shell, an O-shaped sealing structure is installed between the big arm shell and the main shell, and an O-shaped sealing structure and an oil seal sealing structure between the big arm rotating shaft and the output end of the small arm rotating shaft are installed between the small arm shell and the big arm. By means of the design of the multiple sealing structures, the steel rail profile measuring instrument effectively prevents pollutants such as dust and water from entering the main shell, and it is guaranteed that internal precision elements are not damaged; the device is suitable for being used in a complex environment, and the maintenance frequency and cost of the steel rail profile measuring instrument are effectively reduced.

1. Name of the designed product: profile (electric partition rail). 2. Use of the designed product: for electric partition rail profile. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1. 5. Other circumstances or explanations: the designed product is a product of indefinite length.

The utility model relates to the technical field of sliding doors and windows, in particular to an upper rail connecting structure of a sliding door and window, which comprises an upper rail section bar and a sliding sash, a top section bar is arranged at the top of the sliding sash, the upper rail section bar comprises a rail groove, and limiting ribs are symmetrically arranged on the front side wall and the rear side wall of the rail groove in the thickness direction of the sliding sash. The top of the top profile is symmetrically provided with two transfer profiles, anti-swing rollers are rotationally connected in the two transfer profiles, the two anti-swing rollers abut against the two limiting ribs respectively, and the anti-swing rollers slide on the limiting ribs along with movement of the sliding sash. The sliding sash and the upper rail profile abut against each other through the anti-swing rolling wheels connected to the top profile in a matched mode, so that the top of the sliding sash is prevented from shaking and swinging in the sliding process, the anti-swing rolling wheels slide on the limiting ribs along with sliding of the sliding sash, and it is guaranteed that sliding is stable and smooth.

1. The name of the design product: curtain rail profile (intelligent type 6). 2. The use of the design product: used for curtain rail material, the red part is a connector. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 is designated as the basic design. 6. The design product is an elongated article, and the length is omitted.

The invention discloses a straightening method for reducing residual stress of an American-standard 115RE low-alloy high-strength heat-treated steel rail, which comprises the following steps: heating a steel billet in a heating furnace for 3.5-4 hours at the heating temperature of more than or equal to 1200 DEG C, rolling for 13 passes by a universal rolling mill, enabling the rolling section size of the steel billet to meet the section size requirement of the American-standard 115RE steel rail, and enabling the final rolling temperature of the steel rail to be 910-930 DEG C; the steel rail enters an online heat treatment production line at the temperature of 760-810 DEG C, the steel rail is basically kept straight when being discharged from the heat treatment production line, and a guarantee is provided for subsequent light-pressure straightening; the steel rail enters a straightening machine to be subjected to pressure straightening, and the straightening pressure is that the rolling reduction of a 2 # straightening roll is 20-24 mm, the rolling reduction of a 4 # straightening roll is 10-14 mm, the rolling reduction of a 6 # straightening roll is 5-9 mm, and the rolling reduction of an 8 # straightening roll is 1-5 mm. The invention aims to realize stress release by combining heat treatment and straightening processes and optimizing temperature and straightening pressure parameters.

The invention discloses a motor-driven double-guide-rail profiling device of a cold roll forming machine, and relates to the technical field of steel plate machining, the motor-driven double-guide-rail profiling device comprises a main frame, a plurality of guide rails are arranged in the main frame, a mounting seat is arranged in the main frame in a sliding mode, a plurality of sliding blocks are arranged on the outer side of the mounting seat, and the sliding blocks are arranged on the guide rails. The sliding blocks are connected with the guide rails in a sliding mode, profiling dies are arranged between the bottom of the installation base and the main frame, the metal plate profiling device further comprises a driving mechanism used for driving the installation base to move up and down in the main frame, and through the structural design, the two profiling dies are meshed to conduct profiling treatment on a metal plate. In addition, the sliding block is matched with the guide rail, the effects of reciprocating lifting, stable guiding and efficient and rapid profiling are achieved, a hydraulic system is replaced by the driving mechanism, accurate control and stable application of force are achieved, guide column guiding is replaced by rigid guide rail and sliding block multi-point guiding, and high unbalance loading resistance and movement stability are provided.

1. Name of the product in this design: Rail profile measuring instrument. 2. Purpose of this design: For measuring the profile of steel rails. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present application belongs to the field of rail transit detection technology, and particularly relates to a multi-source data fusion rail three-dimensional profile measurement method, device and system, comprising the following steps: acquiring rail section profile data, high-low irregularity data and track irregularity data, and recording mileage information of each measurement position; selecting a local highest point as a vertical splicing reference point; selecting a sampling point horizontal coordinate as a horizontal splicing reference point; constructing a profile calibration model with a smoothing constraint, taking the high-low irregularity data and the track irregularity data as a reference, and calculating a vertical offset and a horizontal offset of each section; and performing global coordinate conversion on the original rail section profile data at each mileage position according to the calculated vertical offset and horizontal offset, to generate a continuous rail three-dimensional point cloud model with a unified spatial reference. The present application aims to solve the three-dimensional reconstruction distortion problem caused by the lack of global height and horizontal reference in the traditional laser scanning technology.

1. The name of the design product: curtain rail profile. 2. The use of the design product: rail profile for curtain, curtain, etc. building construction installation. 3. The design points of the design product: the shape of the product shown in design 1, the shape of the product shown in design 2, the shape of the product shown in design 3, the shape of the product shown in design 4. 4. The picture or photo that best shows the design points: design 2 perspective view. 5. Design 2 is designated as the basic design.

The application provides a turnout rail automatic identification and positioning method and device, the method comprises a reference rail starting point positioning step, a non-reference rail pre-positioning step, and a non-reference rail starting point positioning step. After the starting point of the reference rail serving as a detection starting point is automatically identified based on mileage information and a matching template, the position range of the starting point of the non-reference rail can be inferred based on the starting point of the reference rail and the distance between the preset starting point of the reference rail and the starting points of other non-reference rails. Then, the corresponding rail profile data is extracted based on the position range, and the accurate starting point position of each non-reference rail is further detected. In this way, the type of each rail of the turnout and the specific position of the starting point can be automatically determined, that is, the automatic identification, classification and starting point positioning of the multiple rails of the turnout are realized. On this basis, the corresponding detection algorithm can be further automatically called for each rail, so that the highly automatic detection of the rails of the turnout is realized, the operation amount is small, and the on-site detection is facilitated.

The invention relates to the technical field of switch rails, in particular to a production method of an elastic bendable switch rail for a compound dividing turnout, which comprises the following steps: determining the steel rail model of the switch rail according to the model of a stock rail; determining the machining range of the switch rail according to the steel rail model; precise cutting is conducted on the determined machining range through slicing machining, the horizontal inertia moment and the flexural rigidity of the switch rail are weakened, and an elastic bendable section is formed; the cut switch rail is subjected to precision verification; forging and pressing the point rail subjected to precision verification, and processing the section of the point rail into a common steel rail section consistent with that of the stock rail; the forged and pressed switch rail is cooled, straightened and detected, the switch rail produced through the method is stable and simple in structure, the problems that bolts are broken off, rail seams are eroded and the like are reduced, the reliability of the switch rail is improved, the service life of the switch rail is prolonged, and maintenance convenience of the switch rail is improved.

1. Name of the product in this design: Three-section aluminum rail profile (1). 2. Application of this design: for guide rail profiles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.