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48 results about "Rail wear" patented technology

Three-dimensional wheel-rail wear map construction method taking ambient temperatures and material properties into consideration

The present invention relates to the technical field of wheel-rail material friction and wear. Provided is a three-dimensional wheel-rail wear map construction method taking ambient temperatures and material properties into consideration. The method comprises: 1) on the basis of wheel-rail rolling friction and wear experiments under different contact parameters, obtaining the friction and wear performance of a wheel material under the condition of different ambient temperatures and different wheel-rail hardness ratios, and constructing a function relationship between a wheel wear rate and the dissipated energy per unit area of a wheel-rail contact patch under a series of conditions with different ambient temperatures and wheel-rail hardness ratios; 2) performing function fitting on experimental data to respectively obtain a three-dimensional wheel wear map taking ambient temperatures into consideration and a three-dimensional wheel wear map taking wheel-rail material hardness ratios into consideration; and 3) selecting a two-dimensional reference wear map, and by means of normalization processing, constructing a three-dimensional wheel wear map simultaneously taking ambient temperatures and material hardness ratios into consideration. On the basis of a constructed wear map, the present invention can preferably predict a wheel wear behavior under the condition of different ambient temperatures and different material properties.
Owner:SOUTHWEST JIAOTONG UNIV

Automatic feeding device for wear-resistant pads of pressing blocks

The utility model relates to the technical field of press block wear-resistant gaskets, and one embodiment of the utility model provides an automatic press block wear-resistant gasket feeding device which comprises an assembling mechanism, a centrifugal disc mechanism is arranged on the left side of the assembling mechanism, and a placing mechanism is arranged on the front side of the assembling mechanism. According to the automatic feeding device for the wear-resistant liners of the pressing blocks, the wear-resistant liners on the linear track are blown through the air pump and the air pipe, the wear-resistant liners are rapidly moved to the rightmost end of the track under the action of air pressure, and compared with a traditional automatic feeding device for the wear-resistant liners of the pressing blocks, the automatic feeding device for the wear-resistant liners of the pressing blocks blows the wear-resistant liners through the air pipe. Direct friction between the liner and the surface of the track is reduced through airflow pushing, the service life of the track is prolonged, meanwhile, the feeding speed is remarkably increased, the material blocking risk is reduced, and use is convenient; by means of the technical scheme, the technical problem of rail abrasion in the related technology is solved.
Owner:HEBEI HENGNUO POWDER METALLURGY

Copper foil transport vehicle with track cleaning function

The utility model relates to production transportation technical field, the lower end of turnover rod is fixedly arranged with the connecting frame, is rotatably arranged with the brush roller in the connecting frame through the bearing, the electric telescopic rod is fixedly arranged in the middle of the bottom of the transport car body, the lower end of electric telescopic rod is fixedly arranged with the lifting frame, and the movable frame is rotatably connected with the connecting frame of two sides through the thrust ball bearing, and the both output shafts of double -shaft motor are fixedly arranged with the drive rod, and two drive rods are rotatably inserted in the inside left and right sides of lifting frame through the bearing respectively, and the drive rod is movably sleeved with no. One linkage rod, and the end of no. Two linkage rods are fixedly connected with the brush roller, and the dust collector is fixedly arranged on the upper portion of lifting frame, can carry out the cleaning to the dust, copper scrap and electrolyte etc. Pollutants accumulated on the track in the transportation process, not only avoid the wheel skidding or track wear, improve the service life of track and transport car, but also need not the manual cleaning of shutdown and influence production efficiency.
Owner:QINGHAI NORD NEW MATERIAL CO LTD +2

Swing device of a swing bogie

The utility model discloses a swing device of swing bogie, including H type frame, the H type frame is fixedly connected with the butt joint board for connecting train in the position of center, the top fixed connection of H type frame has two air springs, the both ends of H type frame are all rotatably connected with wheelset through bearing, and the outside fixed connection of wheelset has two limit stops, two L type boards are fixedly connected in the H type frame, and wheelset passes through L type board, the top fixed connection of L type board has two fixed blocks, and one side of two fixed blocks is all fixedly connected with the rotating plate. The utility model not only can effectively reduce the impact between wheel and rail, improve the running stability of vehicle, reduce wheel and rail wear, prolong the service life, promote the operation efficiency, but also can restrain the lateral vibration and swing of carriage in the horizontal plane, especially prevent dangerous "snake movement", ensure the running stability and safety.
Owner:JIANGSU RONGXIN RAIL TRANSIT TECHNOLOGY CO LTD

Railway rail wear detection method, device, server and storage medium

The application provides a rail wear detection method and device, a server and a storage medium, and relates to the technical field of rails. The rail wear detection method comprises the following steps: acquiring profile point cloud data of a to-be-detected rail in a first coordinate system; segmenting the profile point cloud data to obtain rail waist point cloud data and rail bottom point cloud data of the to-be-detected rail; determining a first center coordinate corresponding to the rail waist point cloud data and a second center coordinate of the rail bottom point cloud data; correcting the first center coordinate and the second center coordinate according to an LM algorithm to obtain a corrected second center coordinate and a corrected second center coordinate; adjusting the acquired profile point cloud data; and determining the total wear of the to-be-detected rail according to the distance between the rail head point cloud data of the adjusted profile point cloud data and the rail head point cloud data of standard profile point cloud data, so that the rail wear is accurate.
Owner:CHINA RAILWAY CONSTR CORP LTD +1

Intelligent turnover mechanism for universal welding robot

The invention relates to the technical field of intelligent welding equipment, and discloses a universal welding robot intelligent turnover mechanism which comprises a bottom plate, a bottom plate connecting rail, a rail connecting sliding rail bottom frame plate, a turnover opening and closing assembly arranged on the sliding rail bottom frame plate, a clamping assembly arranged at the end, and a clamping assembly and a limiting assembly arranged in the sliding rail bottom frame plate. And a deslagging micro-lubrication assembly is arranged on the outer side of the track. The overturning opening and closing assembly drives the semicircular frame body to be opened and closed to facilitate workpiece loading and unloading, a V-shaped protruding block and a groove at the end of the frame body are used for positioning, a first gear and a clamping block in the clamping assembly are matched for meshing to lock the end, displacement and falling caused by overturning are prevented, and the structural stability is improved. A second limiting arc block of the limiting assembly is attached to a workpiece to complete position limiting, and the clamping assembly is combined to pull the fixing clamp to clamp the workpiece so as to adapt to different boundary dimensions. Rail waste residues are cleared through a deslagging micro-lubrication assembly scraping plate, a rubber wheel drives a micro gear pump to pump lubricating oil to smear the rail, slag removal and lubrication are synchronous, and rail abrasion is reduced.
Owner:ZHONGYU JIANGXIN MASCH MFG CO LTD

A new type of rail wear generalized zero-shot attribute recognition method for rail transit

The application discloses a new type of generalized zero-sample attribute recognition method for rail wear of rail transit, and comprises the following steps: acquiring a detection image and a semantic vector; extracting visual features of the detection image at multiple levels by using a visual Transformer network, and acquiring global representation information corresponding to each level; performing structured grouping and fusion of the visual features of the multiple levels based on semantic correlation to generate visual subspace features; constructing a structured semantic mask, screening and isolating attribute semantics to obtain semantic subspace representation; performing cross-modal interaction alignment on the visual subspace features and the semantic subspace representation to obtain local attribute feature expression; simultaneously acquiring global attribute feature expression; fusing the local attribute feature expression and the global attribute feature expression to generate comprehensive attribute features; and performing similarity measurement on the comprehensive attribute features and a semantic prototype to output a prediction result; and the application saves cost.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

A track positioning mechanism for a gantry crane

This utility model discloses a rail positioning mechanism for a gantry crane, including an iron pad. By optimizing the rail fixing structure design, this utility model significantly improves the reliability and stability of rail fixing. The positioning channel formed by two positioning plates can accurately limit the rail position, ensuring the overall geometric accuracy of the rail after installation. When the first positioning mechanism is installed on the iron pad, it can achieve initial positioning and fixing of the rail, effectively resisting the displacement risk caused by foundation vibration. Furthermore, after the second positioning mechanism is installed on the positioning plate, it forms secondary positioning and fixing, further enhancing the constraint on the rail. This dual positioning and fixing structure can effectively resist alternating loads, impact vibrations, and environmental factors, reducing irregular changes in rail spacing, avoiding poor contact between wheels and rails and rail wear, extending the service life of wheels and rails, reducing maintenance costs and downtime, and improving the operational safety and efficiency of the gantry crane.
Owner:NANJING DENGFENG LIFTING EQUIP MFG CO LTD

Bogie for urban rail vehicle

The invention discloses a bogie for an urban rail vehicle, which is used for connecting a rail and a bogie body of an urban rail carriage, and comprises two connecting shafts symmetrically arranged on the bogie body; the rolling bearings are arranged in the middles of the connecting shafts and used for adapting to speed change of the ends of the connecting shafts; the driving part is arranged on the bogie body and used for driving the connecting shafts on the two sides of the rolling bearing to rotate; the balance sensor is arranged on the bogie body and used for detecting the balance state of the bogie body and detecting that the bogie body passes through a track curve; the brake mechanism is used for braking the connecting shafts on the two sides of the rolling bearing respectively; and the power recovery part is used for recovering variable-speed kinetic energy of the connecting shafts on the two sides of the rolling bearing and controlling the connecting shafts to decelerate. When the bogie turns, the speed of the wheels is adjusted in a self-adaptive mode, the attaching degree of the wheels and the track is improved, abrasion of the wheels and the track is avoided, the service life of the wheels and the track is prolonged, and potential safety hazards are reduced.
Owner:SHENZHEN CNR RAILWAY VEHICLE CO LTD

A metro wheel-rail matching method based on wear evolution and wheel-rail dynamics characteristics

PendingCN122286962ARail profileDerailment
This invention discloses a metro wheel-rail matching method based on wear evolution and vehicle-rail dynamics characteristics, belonging to the technical field of metro wheel-rail matching methods. It selects three hardness states of commonly used wheels and rails, establishes an iterative calculation model for wheel-rail wear, and calculates the wear evolution results of wheel and rail profiles under different hardness conditions. Under typical metro curve conditions, it matches the wear profiles of wheels and rails at the same service stage and conducts vehicle-rail dynamics simulation, collecting key indicators such as derailment coefficient and lateral creep rate. Finally, it constructs a comprehensive evaluation method for nine wheel-rail hardness matching schemes, selecting the wheel-rail hardness matching scheme with better dynamic response. This method overcomes the limitations of traditional empirical matching and matching based on single test results. Through comprehensive analysis of material hardness, wear profile, and dynamic performance, it obtains a hardness matching evaluation system for the long-term service evolution of wheels and rails, providing a complete hardness matching basis for metro wheel-rail systems.
Owner:CHENGDU RAIL TRANSIT IND TECH RES INST CO LTD +1

Line type optimization method for compound type crossing turnout

The invention provides a compound intersection turnout linetype optimization method, and belongs to the technical field of rails, and the method comprises the steps: determining the main size of a turnout; selecting a turnout guide curve radius, and widening a turnout gauge; based on turnout tie spacing arrangement and structural requirements, the theoretical distance between the point of a turnout switch rail and the point of an acute frog is determined; reducing the tip angle of the curved switch rail, and increasing the width of a semi-tangent rail head and the length of a tip linear section; the curve switch rail point railhead width is determined, a plane linetype optimization method without gauge widening is achieved, large-radius and small-radius curves are organically combined, and the wheel rail transverse force can be effectively reduced. The large radius provides a gentle steering path, so that the centrifugal acceleration is obviously reduced, and the transverse acting force between wheel rails is reduced; the small radius meets the terrain or operation requirements, and on the premise of guaranteeing driving safety, turnout wheel track abrasion is reduced, noise vibration is reduced, and the service life of the track is prolonged. It is suggested that a large-radius and small-radius combined mode is adopted to reduce the dynamic response of the compound dividing turnout.
Owner:RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD +2

A method and system for monitoring wear and deviation of elevator guide rails

This invention provides a method and system for monitoring elevator guide rail wear and deviation, relating to the field of elevator inspection technology. The method includes the following steps: When the elevator under test is running, acquiring the elevator's operating status data and determining whether an anomaly has occurred based on the operating status data; when an anomaly occurs in the operating status data, acquiring an image of the guide rail and extracting features from the image to obtain corresponding guide rail image operating features; simultaneously, extracting features from the initial image to obtain corresponding guide rail initial image features; calculating the similarity between the guide rail image operating features and the initial image features; and analyzing the operating image and the initial installation deviation based on the similarity calculation results to obtain the elevator guide rail wear deviation calculation results. This invention can accurately identify the degree of wear and deviation of the guide rail, improving detection accuracy.
Owner:重庆戴克电梯有限责任公司

A rail transit wheel-rail wear prediction method and model fusing data

The application discloses a kind of track traffic wheel rail wear prediction methods of fusion data, comprising the following steps: physical model data acquisition: obtain physical model data profile evolution matrix A;Measured data acquisition: obtain measured profile evolution matrix B;Data layer fusion: physical model data and measured data are fused, and profile evolution matrix C is obtained;Prediction model establishment: the convolution-multiple recurrent neural network architecture for wear prediction is established;Prediction model training: physical model data and field data are used as input, and prediction model is trained;Wear prediction: input a section of physical model data and field data fusion matrix C * , and profile wear matrix D is output by prediction model.The method proposed in the application can give full play to the advantages of physical model and field measured data, carry out data fusion in input layer, improve the generalization of prediction network model, widen the effective length of prediction time, and improve prediction accuracy.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE

Environment-friendly wheel track wear-resistant protective material and preparation method thereof

The invention belongs to the technical field of rail transit operation and maintenance materials, and discloses an environment-friendly wheel track wear-resistant protective material and a preparation method thereof. The raw materials comprise a base material, a rheology regulator, a wetting regulator, a friction regulator, a solid lubricant, an antirust agent and a fluid. The environment-friendly wheel track wear-resistant protective material prepared by integrating nano-compounding and environment-friendly passivation technologies has the characteristics of high wear resistance, strong adhesion and environment friendliness, realizes high wear resistance, strong adhesion and rust construction capability of the surface of a steel rail, is suitable for long-acting protection of wheel track contact surfaces of road sections such as a track traffic heavy haul railway curve, a turnout zone and the like, and has a good application prospect. And the maintenance cost and the environmental pollution are obviously reduced.
Owner:LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Method and system for controlling noise based on wheel equivalent taper steel rail abrasion filtering

PendingCN121365457AGeometric CADBogieCurrent noise
The invention belongs to the field of noise processing, and provides a method and system for controlling noise based on wheel equivalent taper steel rail abrasion filtering. The method comprises the steps that the relation between the equivalent taper and the transverse acceleration of a framework is calculated in a simulation mode, and the condition for triggering the bogie instability alarm is determined; meanwhile, in combination with vehicle vibration data, the early warning limit values of wheel polygons and rail corrugation are optimized; when any one of a bogie instability alarm condition, an early warning limit value not lower than a wheel polygon and an early warning limit value not lower than steel rail corrugation is met, a current noise signal in the vehicle is obtained; and performing filtering control on the current noise signal in the vehicle, judging whether the noise signal after filtering control is within a preset normal range or not, if so, outputting the noise signal after filtering control, and if not, re-judging whether the bogie is overhauled or not. The noise in the vehicle can be reduced, and the comfortable experience of passengers is improved.
Owner:CRRC QINGDAO SIFANG CO LTD

Rail grinding equipment for repairing abraded steel rail

The invention relates to the technical field of rail grinding, in particular to rail grinding equipment for repairing steel rail abrasion. The device comprises a detection assembly, the detection assembly comprises a vertical rod, the vertical rod is axially arranged on one side of a side plate in a sliding mode, the bottom of the vertical rod is horizontally and rotatably connected with a detection wheel, one side of the vertical rod is provided with a first gear, and the side, away from the vertical rod, of the first gear is connected with a second gear in an engaged mode. When the detection wheel is in contact with a welding seam or other protrusions on a rail, the detection wheel is jacked up and drives a vertical rod to slide upwards, in the process, the vertical rod drives a first gear and a second gear to rotate, and the second gear synchronously drives a sliding block to slide upwards and pulls a second compression spring to be in a loose state; therefore, the grinding wheel falls to be attached to the surface of the rail only by means of the gravity of the grinding wheel when falling from the salient point, and the grinding wheel is prevented from hitting the rail surface with pressure which is multiple times of a set value after crossing a welding seam, so that a grinding pit is formed.
Owner:湖南中车轨道交通设备有限责任公司

Method for adjusting and maintaining guard rails against detachment

The present application relates to the technical field of rail transit engineering, and especially relates to a kind of adjustment and maintenance method of anti-derailment guard rail, guard rail support and sleeve shoe elastic pad block are designed as eccentric structure, the sleeve shoe elastic pad block is sleeved on the guard rail support, the guard rail is arranged above the sleeve shoe elastic pad block, the guard rail support and the sleeve shoe elastic pad block have installation surface with different thicknesses in front and back;By selecting and combining the different installation surfaces of guard rail support and sleeve shoe elastic pad block, the width of flange groove is adjusted according to design requirements when installing guard rail.The present application has the advantages that: it can effectively deal with the problems of wheel rail lateral force of train wheel during operation, rail wear, track gauge expansion, component wear and replacement, corrosion and the like, ensures the reliable anti-derailment function of guard rail, and fills the design blank of such fine adjustment and quick maintenance type anti-derailment guard rail.
Owner:CHINA RAILWAY SHANGHAI DESIGN INST GRP CO LTD

Steel rail surface state evaluation method and device fusing multiple rapid detection technologies

The invention discloses a steel rail surface state evaluation method and device fusing multiple rapid detection technologies, and the method comprises the steps: obtaining ultrasonic detection data, magnetic flux leakage detection data, rail profile detection data, inspection detection data and steel rail ledger data, and carrying out the data alignment; preprocessing the detection data after data alignment to generate ultrasonic surface flaw data, magnetic flux leakage surface flaw data, rail profile surface flaw data and inspection surface flaw data; determining a steel rail surface defect evaluation result; and determining a final steel rail surface state evaluation result based on the steel rail surface defect evaluation result and a pre-established steel rail abrasion evaluation model. The advantages of multiple rapid detection technologies are fused, comprehensive and accurate evaluation of the steel rail surface state is realized, scientific and reliable data support is provided for making a steel rail maintenance strategy, and the method is suitable for popularization and application. Resource waste is effectively avoided, cost is reduced, and train operation safety is guaranteed.
Owner:CHINA STATE RAILWAY GRP CO LTD +3

A fully automatic rail deruster

This utility model relates to the field of rail rust removal technology, specifically a fully automatic rail rust removal machine, including a frame on which two sets of limiting and guiding components are mounted. This fully automatic rail rust removal machine, through the coordinated operation of the drive components and the limiting and guiding components, can automatically travel along the rail to complete rust removal, completely eliminating reliance on manual labor, reducing labor intensity, and improving work efficiency. The equipment is equipped with four sets of grinding wheels, which are used to cover the top, bottom, front and rear side groove surfaces, side tops, and inner bottom walls of the rail, effectively solving the problem of incomplete rust removal of hidden areas such as the rail bottom triangular area and groove surface by traditional equipment, achieving comprehensive rust removal without dead angles. Regarding grinding force control, the linear module precisely adjusts the contact force between the grinding wheels and the rail through adjusting bolts and drive wheels, and the fine-tuning of the transmission device with adjusting screws effectively avoids excessive rail wear or inadequate rust removal caused by fluctuations in grinding force.
Owner:LANUSS INTELLIGENT EQUIP(HUBEI) CO LTD

Rail wear detection device, rail wear detection method, and program

Detects the amount of wear on railway tracks. [Solution] This rail wear detection device detects the amount of wear on a railway rail and includes: a generation means (101) that generates a pseudo-contour of the cross-section of a railway rail based on point cloud data included in a region of a predetermined length in the longitudinal direction of the railway rail from three-dimensional point cloud data of a railway track including the railway rail; a identification means (102) that identifies pseudo-straight sections, which are characteristic parts of the rail included in the pseudo-contour; a fitting means (103) that matches the pseudo-straight sections, which are characteristic parts of the rail included in the pseudo-contour with the reference straight sections, which are characteristic parts of the reference contour obtained from the cross-sectional shape of a standard rail, and superimposes the pseudo-contour and the reference contour; a detection means (104) that detects the amount of wear on the railway rail based on the difference between the superimposed reference contour and the pseudo-contour; and a registration means (105) that collects the data obtained from the railway rail wear detection process and registers it in a dataset.
Owner:KUMONOS CORP

Railway track wear monitoring device

The utility model discloses a railway track wear monitoring device, which relates to the technical field of monitoring devices and comprises a mounting plate, a placement box is mounted on the mounting plate, an ultrasonic flaw detector is placed in the placement box, and the ultrasonic flaw detector is connected with a probe through a connecting line; a supporting plate is mounted on the mounting plate, a first connecting plate is connected to the supporting plate through a moving assembly, an electric push rod is mounted on the first connecting plate, a first clamping block is connected to the output end of the electric push rod through a rotating assembly, and a second clamping block is rotationally connected to one end of the first clamping block; the second clamping block is connected with the other end of the first clamping block through a clamping assembly, and a distance measuring sensor is installed on one side of the first clamping block. According to the utility model, the moving assembly can drive the probe to move and adjust, manual adjustment by workers is not needed, the working efficiency can be improved, and the adjustment accuracy is high, so that the detection accuracy is improved, and the workers can find abrasion in time for maintenance.
Owner:TIANJIN JIANLIAN BASIC ENG INSPECTION SERVICE CO LTD

Toothless saw device capable of improving abrasion between sliding block and track

The utility model relates to the technical field of toothless saw equipment, and aims to solve the technical problem that a protective cover is easy to lose efficacy. In order to solve the technical problem, the utility model provides the toothless saw device capable of improving the abrasion between the sliding block and the track. The device comprises a rack; a rail extending in the X direction; the sliding block is slidably connected to the top of the track; the connecting assembly is of a door-shaped structure and covers the sliding block; the connecting assembly is connected with the sliding block and moves along with the sliding block in the X direction. A door-shaped mounting groove body is formed in the connecting assembly; the toothless saw is connected to the top of the connecting assembly; the cover body is made of a metal material and is of a door-shaped structure; two ends of the cover body are fixedly connected with the rack; and the cover body is slidably connected in the mounting groove body. The cover body can cover the whole length of the track, the protection on the track is enhanced, the track cannot be melted by splashing hot slag, the failure rate of toothless saw equipment is reduced, and the service life of the equipment is effectively prolonged.
Owner:JIANGSU SHAGANG STEEL CO LTD +1

Railroad heavy haul car truck with knuckle-type frame incorporating a pair of truck bolster wheels

The present application relates to railway heavy load freight vehicle, specifically to a kind of knotted frame combined with a pair of supporting wheel bogie.Aiming at the defects that the longitudinal structure of traditional 3-axle bogie is strong in rigidity, the middle wheelset is easy to produce second guide force, cause the poor curve negotiation performance of bogie, the serious wheel-rail wear and the large damage to track panel, the bogie of the present application adopts knotted frame structure, replaces the rigid integrated side frame structure of traditional 3-axle bogie, and adopts a pair of non-flanged, horizontal tread, and one-wheel one-axle supporting wheel, replaces the middle wheelset in traditional 3-axle bogie.Meanwhile, mechanism with rotary torque function is added in multiple directions and multiple levels in bogie structure, further improves the stability of anti-snaking performance of bogie.Through the above technical scheme, the bogie of the present application is expected to realize heavy load transportation of 100t level and above vehicles on existing special railway line, and realize the passing transportation of 80t level and above vehicles on existing general railway line.
Owner:张二群

Digital twin–based autonomous non-contact rail wear measurement system

The present invention relates to a non-contact rail wear measurement system and, more specifically, to a digital twin-based autonomous non-contact rail wear measurement system, which is configured such that a rail-moving apparatus moves autonomously along a rail and is fixed at a specific location for measurement, rather than being manually moved by an operator. By integrating digital twin and autonomous driving technologies, the system allows for real-time monitoring and control of the operation of the rail-moving apparatus from a control room. Moreover, by reducing the weight and size of a configuration that rotates along a rail head for wear measurement, the system improves measurement accuracy and speed. For the simultaneous measurement of a pair of railway rails, one of a pair of measurement units is designed to include only a moving support unit, a rail fixing unit, and a sensing device of the rail moving apparatus, thereby reducing the overall weight and size of the pair of measurement units. Furthermore, the system enables regions expected to experience rail wear to be selected and wear measurement to be performed on the corresponding regions. In addition, the system analyzes environmental factors that may cause errors during the measurement process and pre-processes measurement data expected to have caused errors as noise, thereby enabling more precise measurement of a wear state of the rail head.
Owner:LOBSE CO LTD

Railway rail wear prediction method and system in non-periodic track maintenance scenario

The application provides a rail wear prediction method and system in a non-periodic line maintenance scene, belongs to the technical field of rail wear prediction based on image processing, and obtains point cloud data of a rail profile; a pre-trained rail wear prediction model is used to process the obtained point cloud data, and a rail wear prediction result is obtained; wherein the rail wear prediction model comprises a point cloud coding layer and a distribution accumulation prediction unit; the point cloud data is processed through the point cloud coding layer, and a feature vector is extracted; the feature vector is input into the distribution accumulation prediction unit, based on a given point cloud feature vector and a target time interval T, and a wear prediction result that monotonically increases with time is output. The application introduces a distribution accumulation prediction with a unique structure, internalizes the physical law of wear development as a structural constraint of the model, ensures that the prediction result strictly follows the monotonic increasing characteristic, and significantly improves the physical rationality of the output and the credibility of long-term prediction.
Owner:BEIJING JIAOTONG UNIV

Steel rail material for subway small-radius curve line and production method of steel rail material

PendingCN121575310ARailsFurnace typesStress distributionRolling contact fatigue
The invention discloses a steel rail material for a subway small-radius curve line, and the rail head area of the cross section of a steel rail is divided into three areas according to different microsizes of pearlite structures, namely a surface regulation and control layer, a rail angle hardening area and a core base body area. Aiming at more small-radius curves of the subway line at present, the microstructure of different stressed parts of the steel rail head is reasonably designed and arranged on the basis of the wheel-rail contact relation and stress distribution characteristics of the small-radius curve line, so that the steel rail material rail head is ensured to have the wear and the surface contact fatigue crack cooperative control, and meanwhile, the steel rail material rail head is ensured to have a good anti-fatigue effect. And the generation and development of internal fatigue cracks can be reduced. Meanwhile, gradient distribution and stable control of pearlite structures of different parts of the rail head of the steel rail are achieved by controlling rolling and conducting accelerated cooling at different speeds on the rail head, and generation and development of steel rail abrasion and rolling contact fatigue damage on a small-radius curve line are effectively relieved; the comprehensive use performance and the service life of the steel rail are improved.
Owner:WUHAN VOCATIONAL COLLEGE OF SOFTWARE & ENG (WUHAN OPEN UNIV)

A train braking interface and wheel-rail wear particle classification, collection and detection device

This utility model discloses a train braking interface and a device for the graded collection and detection of wheel-rail friction particles, including a train braking test bench, a discharge circuit, a braking system, an isolation chamber, a particle grading and filtration collection device, a filter screen, and a particle settling collector. The braking system is placed in the isolation chamber, which is connected to the particle grading and filtration collection device through the discharge circuit. The particle grading and filtration collection device has multiple layers of filter screens and a particle settling collector arranged sequentially from top to bottom. A dynamic detection opening is provided on the side, connected to an external particle concentration detection device. By monitoring the changes in particle concentration within the device in real time, the operating state of the filter screen is dynamically adjusted to effectively prevent clogging. This utility model is applicable to particle detection and particle size classification collection under various brake disc materials, brake pad installation methods, and complex braking conditions. It can detect particles generated by the braking system and wheel-rail friction separately or simultaneously, providing technical support for research on environmental protection and performance optimization of train braking systems.
Owner:SOUTHWEST JIAOTONG UNIV

Bearing rail beam stabilizing device

ActiveCN224185721UFlexible displacement adjustmentImprove anti-shake performanceLoad-engaging girdersButt weldingClassical mechanics
The utility model provides a bearing rail beam stabilizing device, which relates to the technical field of crane running tracks, and comprises fixing plates arranged at the bottoms of two ends of a bearing rail beam, U-shaped holes formed in the surfaces of the fixing plates, U-shaped steel plates welded at the opening ends of the fixing plates in a butt joint manner, and adjusting bolts arranged between the U-shaped holes and the U-shaped steel plates and used for adjusting the displacement of the bearing rail beam. Gaskets are arranged between the beam support and the rail bearing beam, a strip hole is formed in the surface of each gasket, and an adjusting bolt penetrates through the gaskets to be connected with the beam support. The distance between every two adjacent gaskets on the same beam support in the transverse direction ranges from 1 mm to 2 mm. Pre-embedded plates are embedded in the stand columns, tie bar assemblies are welded between the pre-embedded plates and the rail bearing beams, and walking platform assemblies are further arranged on the side portions of the top faces of the rail bearing beams, so that the technical problems that track abrasion occurs due to the fact that flexible adjustment cannot be achieved, and deformation or cracking occurs due to the fact that a whole sizing block is welded to the bottom are solved; shaking is reduced, and the service life is prolonged.
Owner:TAIZHOU HUANGYAN KANGHENG RENEWABLE ENERGY CO LTD

Full-automatic movable partition rail system

The utility model relates to the field of partition track systems, in particular to a full-automatic movable partition track system which comprises a track, a hanging wheel is arranged on the track and comprises a shell and a traveling wheel, a driving assembly is further installed in the shell and comprises a driving motor, the driving motor is installed in the shell, and the traveling wheel is installed in the shell. A driving motor is installed on the bottom wall of the shell, the driving motor is connected with the advancing wheels, a power taking module is further installed on the rail and connected with the driving motor, a hanging rod is further installed on the bottom wall of the shell, penetrates through the rail and extends downwards, and the hanging rod is used for being connected with a partition. The problem that track abrasion is accelerated due to the fact that a driving motor is externally arranged in a traditional mode is solved, and the effect of relieving track abrasion can be achieved.
Owner:BAIDUSHI MOVABLE GEYINQIANG SYST (KUNSHAN) CO LTD

Method and device for predicting abrasion of steel rail

The invention provides a steel rail abrasion prediction method and device. The method comprises the steps that a truck rail system dynamic model and a steel rail material abrasion model are established; carrying out steel rail abrasion evolution simulation of a preset steel rail weight specification by utilizing the truck rail system dynamic model and the steel rail material abrasion model to obtain a simulation result; according to a simulation result, a steel rail abrasion historical data set changing along with the passing total weight is obtained; the steel rail abrasion historical data set comprises wheeltrack system working condition training data and steel rail abrasion profile label data; training the initially constructed steel rail abrasion prediction model by using the working condition training data of the wheel-rail system and the steel rail abrasion profile label data to obtain a target steel rail abrasion prediction model; and inputting the obtained actual measurement data of the working condition of the wheel-rail system into the target steel rail abrasion prediction model to obtain target steel rail abrasion profile data. Through the target steel rail abrasion prediction model, steel rail abrasion molded surface data prediction of wheel-rail system working condition measured data is realized.
Owner:SHENHUA RAIL & FREIGHT WAGONS TRANSPORT