33 results about "Railroad wheel" patented technology

The invention discloses a deep learning-based railway wheel surface defect intelligent identification method, which comprises the following steps of: obtaining an original image of a railway wheel surface and carrying out image preprocessing to generate a standardized polar coordinate image set and a preprocessing parameter set; an enhanced DINOv2 model is constructed; calculating and generating a circumferential geometric coding feature tensor according to the preprocessing parameter set; according to the standardized polar coordinate image set and the circumferential geometric coding feature tensor, fusion is carried out to generate a fusion feature tensor; carrying out annular long dependence modeling and sequence mixing processing on the fusion feature tensor; generating a token routing index according to the multi-source features, and extracting a high-resolution token set and a low-resolution token set; and executing cross-scale decoding, and outputting a railway wheel surface defect identification result. According to the method, the crack pitting detection rate is increased, the edge contour precision is improved, and the recognition stability under complex working conditions is enhanced.

A railway wheel recycling welding method according to an embodiment of the present comprises: a surface information acquisition step of acquiring surface information of a railway wheel flange; a welding torch position setting step of setting the position of a welding torch for performing overlay welding on the railway wheel flange on the basis of the surface information; and a welding step of performing welding on the railway vehicle flange in accordance with the position of the welding torch in the welding torch position setting step.

The truss robot is characterized in that a room of a railway wheel production workshop internally comprises a stand column track, a wheel storage logistics system and the truss robot, and the wheel storage logistics system comprises the wheels and the wheel hanging seats; the wheel hanging seat comprises a base and a hanging rod fixed to the center of the base, and a plurality of wheels are horizontally stacked on the base. The truss robot comprises a clamping jaw device, the truss robot can grab the horizontal wheels and the wheel lifting seats through the clamping jaw device, and the horizontal wheels and the wheel lifting seats can be lifted to respective set positions in the area of the two stand column rails; the device has the main advantages of high efficiency, low comprehensive investment and small occupied area.

A portable railway wheel truing apparatus is disclosed herein. The machine uses multiple cutting tools set along a path corresponding to a target wheel profile for a railway wheel. The tool path is set by the interaction of different guide slots on a guide plate and drive slots on drive plates that slide back and forth across the guide plate. The cutting tools are connected to guide pins that pass through and are able to roll within the guide slots in the guide plate and drive slots in the drive plates. Thus, as the drive plates move, they push the guide pins along a path formed by the overlap of the drive slots in the drive plates and the guide slots in the guide plate.

Provided is a railway wheel in which the generation of proeutectoid cementite can be suppressed even if the C content is high. The railway wheel according to the present embodiment has a chemical composition containing, in mass%, 0.80-1.15% of C, 0.45% or less of Si, 0.10-0.85% of Mn, 0.050% or less of P, 0.030% or less of S, 0.120-0.650% of Al, 0.0030-0.0200% of N, 0-0.25% of Cr, and 0-0.12% of V, with the remainder being Fe and impurities, and the amount of proeutectoid cementite in the microstructure of the railway wheel defined by formula (1) being 1.50 pieces / 100 [mu] m or less. The amount of pro-eutectoid cementite (root / 100 [mu] m) = the sum of the number of pro-eutectoid cementite which intersects two diagonals of a square field of view of 200 [mu] m * 200 [mu] m / (5.66 * 100 [mu] m) (1).

The invention discloses a truss robot with a visual system and a clamping jaw capable of grabbing a hanging seat and a wheel, which is characterized in that a room of a railway wheel production workshop internally comprises a stand column track, a wheel storage logistics system and the truss robot, and the wheel storage logistics system comprises the wheel and the wheel hanging seat; the wheel hanging seat comprises a base and a hanging rod fixed to the center of the base, and a plurality of wheels are horizontally stacked on the base. The truss robot comprises a clamping jaw device, the truss robot can grab the horizontal wheels and the wheel lifting seats through the clamping jaw device, and the horizontal wheels and the wheel lifting seats can be lifted to respective set positions in the area of the two stand column rails; the device has the main advantages of high efficiency, low comprehensive investment and small occupied area.

The invention discloses a method for improving segregation and rolling cracks of wheel steel and improving rolling-state toughness, and belongs to the technical field of railway wheels, through alloying design and multi-process parameter cooperative control, a full-flow process of smelting, steel billet sawing, heating, preforming, forming, rolling and bending is adopted, all the processes are linked with one another, and the production efficiency is improved. According to the wheel steel and the preparation method thereof, component uniformity and structure stability are ensured, Al and Zr alloying design is adopted in chemical components, the effect of Al and Zr in the wheel steel is fully played, corresponding continuous casting and hot working procedures are controlled, a uniform structure is obtained, segregation and rolling cracks of the wheel steel are improved, and the wheel steel has the comprehensive mechanical properties such as high toughness and good ductility.

The invention discloses a vertical lathe provided with a truss robot and used for railway wheel machining, which is characterized in that a factory building of a railway wheel production workshop internally comprises a stand column track, a wheel storage logistics system and the truss robot, and the wheel storage logistics system comprises wheels and a wheel hanging frame. The wheel hanging frame comprises a base and a hanging rod fixed to the center of the base, and a plurality of wheels are horizontally stacked on the base. The truss robot comprises a clamping jaw device, the truss robot can grab the horizontal wheels and the wheel lifting frame through the clamping jaw device, and the horizontal wheels and the wheel lifting frame can be lifted to respective set positions in the area of the two stand column rails; the device has the main advantages of high efficiency, low comprehensive investment and small occupied area.

This invention provides a railway wheel crack detection device and method, belonging to the field of railway wheel inspection technology. It includes a maintenance track, a top-rotating wheel mechanism, a robotic arm, a mounting frame, a connector, and an ultrasonic probe. Two symmetrical sliding grooves are formed at both ends of the inner side of the mounting frame. Two adjusting plates are symmetrically arranged between the two sliding grooves, one in front of the other. An adjusting component is installed between the sliding grooves and the adjusting plates, and a cleaning component is installed between the mounting frame and the adjusting plates. The movement of the adjusting plates adjusts the spacing and coverage of the ultrasonic probe, improving the device's versatility. Simultaneously, the movement of the adjusting plates adjusts the cleaning range of the elastic cleaning sleeve. Cleaning is achieved through the coordinated work of the cleaning component and the water spray head. The cleaning component uses the wheel's rotation to drive the elastic cleaning sleeve to rotate and wipe, and a contact plate pushes a sliding plate to ensure the elastic cleaning sleeve fits tightly against the wheel, increasing the cleaning resistance.

The application discloses a residual stress improvement method for a railway wheel, and specifically as follows: determining vibration parameters of a vibration aging treatment, including exciting force, exciting time and exciting frequency of different tread depths, and then performing the vibration aging treatment on the wheel. The residual stress improvement method based on the vibration aging treatment improves the production efficiency of the wheel, and compared with a wheel treated by a traditional quenching + tempering process, the wheel treated by the vibration aging treatment can effectively reduce the residual stress of the wheel, the shrinkage value of the wheel flame cutting is reduced by about 30%, and the mechanical properties and the contact fatigue properties can be improved.

The utility model discloses a plasma cutting positioning and clamping tool, belongs to the technical field of plasma cutting, and solves the problems that a channel of an existing device does not pass through a supporting block, so that a cutting torch of plasma cutting equipment is easy to cut the supporting block when cutting a wheel, and then the clamping tool is damaged. A positioning cutting assembly is arranged on the top face of the bottom of the L-shaped plate, an auxiliary positioning assembly is arranged above the positioning cutting assembly, the positioning cutting assembly comprises a regular dodecagonal rotating plate, and six cutting grooves distributed in an annular array are formed in the bottom face of the rotating plate. The cutting torch of the handheld plasma cutting machine is used for cutting the railway wheel, through the arrangement of the cutting groove and the receding groove, the situation that the cutting torch damages the rotating plate and the supporting column can be avoided, the motor drives the rotating disc to rotate by 60 degrees, then the cutting position of the wheel in the rotating plate can be adjusted, and then the railway wheel is cut into six fan-shaped plates.

This application discloses a method for smelting wheel steel, relating to the field of iron and steel smelting technology. This method achieves deep purification of molten steel by reducing the introduction of harmful elements and foreign inclusions. Through the modification treatment of inclusions, fatigue cracks can be effectively eliminated; simultaneously, combined with weak cooling and long-term slow cooling processes, the billet microstructure can be homogenized and internal stress released, thereby significantly improving the cleanliness, density, and mechanical property stability of the wheel steel. Wheel steel prepared using this method has low inclusion content, uniform morphology, low gas content, no obvious segregation in the microstructure, high product flaw detection pass rate, and significantly improved fatigue life and service safety, meeting the stringent requirements for high-end railway wheel steel.

A two-row bicycle transport superstructure (4) consisting of lower superstructures (5) and upper superstructures (6) suitable for transporting 30 railway bicycles (19), which is fixed on the container fixing nails (2) of a sixty-foot container railway freight car (1), characterized in that it consists of two thirty-foot long lower superstructures (5) and five twelve-foot long upper superstructures (6), which lower superstructures (5) are welded together from outer longitudinal beams (11) made of closed section reinforced with ribs (15), cross beams (12) connecting them, inner longitudinal beams (13) and columns (14), and which upper superstructures (6) are welded together from upper outer longitudinal beams (20) made of closed section reinforced with ribs (15), upper cross beams (21) connecting them, upper inner longitudinal beams (22), upper columns (23) and upper are welded together from connectors (24),and by means of container fixing corner elements (7) formed at the bottom of which lower superstructures (5), the double-row bicycle transport superstructure (3) is fixed on the container fixing nails (2) of a sixty-foot container railway freight car (1), in addition, the upper superstructures (6) are fixed on the top of the lower superstructures (5) in such a way that the container fixing corner elements (7) welded to the upper superstructures (6) are connected to the semi-automatic swivel locks (8) placed in the container fixing corner elements (7) welded to the columns (14) of the lower superstructures (5), and two lower superstructures (5) are connected to each other by interposing a spacer (9), by a screw connection (10), and to the outer (11) and inner longitudinal members (13) of the lower superstructures (5), and to the upper outer (20) and upper inner longitudinal members of the upper superstructures (6) (22) Two nests (16) are welded to each railway wheel, which nest (16) consists of two L-profiles (17) turned opposite each other.,

railway track cutting tool (1) extending along a track axis (X), the rails forming a first rail (R1) and a second rail (R2) belonging to a pair of railway track rails, the cutting tool (1) comprising: a carriage (2) having a chassis and railway wheels; a first support (5) mounted on the chassis (2) and movable relative to the chassis (2); a first circular saw (10) carried by the first support (5) and configured to cut the first rail (R1); a first motor (20) for driving the first saw (10) in rotation, a second support (12) mounted on the chassis (2) and movable relative to the chassis (2);a second circular saw (15) carried by the second support (12), arranged symmetrically to the first saw (10) with respect to the track axis (X) and configured to cut the second rail (R2), and a second motor (25) to drive the second saw (10) in rotation, the tool (1) being configured such that a movement of the first support (5) relative to the frame and the rotation of the first saw (10) cause the latter to cut the first rail (R1) and such that a movement of the second support (12) relative to the frame and the rotation of the second saw (15) cause the latter to cut the second rail (R2). Figure of the abstract: Figure 1;

A portable railway wheel abrasion inspection device comprises a main body part, a tread stripping length measuring ruler, a rim thickness measuring ruler, a rim thickness measuring ruler and a rolling width measuring ruler, the tread stripping length measuring ruler is arranged on the left side of the main body part, and the bottom end of the tread stripping length measuring ruler protrudes out of the bottom end of the main body part and extends downwards; the bottom end of the tread stripping length measuring ruler continues to extend downwards to form the rim thickness measuring ruler, the inner side edge of the section, protruding out of the main body part, of the tread stripping length measuring ruler and the inner side edge of the rim thickness measuring ruler continuously form a reference positioning edge, and the bottom edge, horizontally extending rightwards, of the main body part on the inner side of the reference positioning edge is a tread abrasion detection edge. The rim thickness measuring ruler is mounted on the surface of the rim thickness measuring ruler mounting plate in a manner of extending in the horizontal direction, a main body part on the right side of the rim thickness measuring ruler mounting plate extends downwards to form a tread positioning head protruding out of the right lower side of the rim thickness measuring ruler mounting plate, and the grinding width measuring ruler is arranged at the upper end of the right side of the main body part. The railway wheel parameter detector can detect a plurality of parameters of railway wheels, and is small in size, convenient to carry and convenient to use.

The invention discloses a railway wheel ultrasonic detection coupling water supply and recovery device and method. The device comprises a probe coupling liquid supply and recovery assembly, a water tank assembly and a controller, and the probe coupling liquid supply and recovery assembly comprises a probe, a mounting groove and a water collection groove; the probe comprises a probe shell, a wafer, a liquid supply pipe, a spring and a cable, the wafer is installed on the top surface of the probe shell, a plurality of coupling liquid outlet holes are formed in the top surface of the probe shell, and the top surface of the probe shell is used for being attached to a wheel tread; the mounting surface is provided with a probe interface, one end of the probe interface is communicated with the inlet of the liquid supply pipe, and the other end of the probe interface is communicated with the liquid inlet. According to the railway wheel ultrasonic detection coupling water supply and recovery device and method provided by the invention, the coupling liquid with a continuous and controllable liquid film is formed, the supply stability of the coupling liquid near the working surface of the probe is ensured, echo fluctuation caused by poor coupling is reduced, disordered flowing and splashing of the coupling liquid around equipment are reduced, and recovery and recycling are facilitated.

The application discloses a three-dimensional mapping train wheel out-of-roundness detection method, relates to the technical field of railway wheel out-of-roundness detection, and comprises the following steps: when a train is running, feature points of a wheel are marked, and a local state two-dimensional image of the wheel when the train is running is acquired; the method further comprises the following steps: feature point extraction, space extreme point detection, accurate positioning of the feature points, feature point direction information matching, feature point description and feature point matching are sequentially performed on the local state two-dimensional image, and movement pose data of the wheel between adjacent images is obtained; the movement pose data of the wheel is optimized, and global consistent wheel movement track data and wheel two-dimensional image data are obtained; wheel space three-dimensional image data is established according to the wheel movement track data and the wheel two-dimensional image data; and the wheel space three-dimensional image data is compared with standard wheel data, and wheel out-of-roundness information is obtained. The application is easier to acquire essential features of an image, and improves matching stability and anti-noise capability.

The invention discloses a truss robot for a railway wheel maintenance production workshop, which is characterized in that the workshop of the railway wheel maintenance production workshop internally comprises a stand column track, a wheel storage logistics system and a truss robot, and the wheel storage logistics system comprises wheels and a wheel hanging frame; the wheel hanging frame comprises a base and a hanging rod fixed to the center of the base, and a plurality of wheels are horizontally stacked on the base. The truss robot comprises a clamping jaw device, the truss robot can grab the horizontal wheels and the wheel lifting frame through the clamping jaw device, and the horizontal wheels and the wheel lifting frame can be lifted to respective set positions in the area of the two stand column rails; the device has the main advantages of high efficiency, low comprehensive investment and small occupied area.

The invention relates to an automatic stacking table for railway wheel production and a working method thereof.The automatic stacking table comprises a stacking rack, the stacking rack is composed of a bottom plate and a plurality of supporting legs located below the bottom plate, a circular through hole is formed in the center of the bottom plate, and a hydraulic lifting table used for jacking wheels upwards to pass through the through hole is arranged below the through hole; a plurality of wheel guide supports which are uniformly distributed on the peripheral side of the through hole and can move back and forth in the radial direction of the through hole are vertically arranged above the bottom plate, and the lower part of each wheel guide support is hinged with a pusher dog which extends horizontally towards the center direction of the through hole and can turn upwards; when the wheels are jacked to pass through the through holes, the rims of the wheels make contact with the pusher dogs in the horizontal state and push the pusher dogs to turn upwards, and when the bottom faces of the wheels finally cross the top ends of the pusher dogs, the pusher dogs automatically swing downwards to the horizontal state. The stability and reliability of the stacking process are ensured, the device adapts to the diameters of wheels of different specifications, the shutdown waiting time of gauge changing of a production line is greatly shortened, and the production efficiency is improved.

This disclosure relates to the field of freight car testing technology, and particularly to a method and apparatus for testing wheel-rail forces on in-service railway wheels. The method uses a three-dimensional finite element model of the wheel to determine a fitting function between the normal stress output and the position radius under different operating conditions. Based on the fitting function, the radius that maximizes measurement accuracy is determined, thereby optimizing the position of strain gauges. Furthermore, based on multiple strain gauges, strain output information is determined to identify the wheel-rail forces acting on the wheel. This allows for continuous monitoring of wheel-rail forces on a moving wheel without destructive machining of the wheel and axle.

System and method for measuring wheel-rail contact forces and the wheel-rail contact position, the system comprising a data acquisition device having at least one strain sensor attached to a railway wheel (1), the strain sensor measuring strain measurements of the wheel (1) in a plurality of instants of time while the wheel (1) moves on the rail (2), a memory for storing the strain measurements obtained by the strain sensor during the plurality of instants of times, and a processor that executes a process comprising the steps of reading the strain measurements stored in the memory, and calculating the wheel-rail contact forces (Y, T, Q) and the wheel-rail contact position (p) based on the strain measurements stored in the memory, thus the contact forces and contact position may be estimated using a reduced number of strain sensors that obtains several strain measurements in a plurality of instants of time.

A sound-absorber member (10), which is designed to be arranged on a rail wheel of a rail vehicle, has at least one base plate (20), which can be fixed on the rail wheel by at least one fastening means (30) in such a way that it is arranged parallel to a wheel plane of the rail wheel; and at least one absorber plate (40), which can be at least indirectly connected to the base plate (20) in the axial direction by at least one connecting means (50) and is held thereon in a connected manner, wherein at least one damping means (60) extends in a planar manner between the base plate (20) and the absorber plate (30). In order to provide sound-absorber members (10) which, while being of reduced weight, allow simple and flexible handling and reliable reduction of noise emissions from rail wheels, it is proposed to divide the at least one base plate (20) and / or the at least one absorber plate (40), in each case along at least one intermediate space (72, 74), into a plurality of mutually adjacent base-plate segments (24, 26) and / or absorber-plate segments (44, 46), and to provide the at least one intermediate space (72, 74) in the radial direction with at least two sections (72a, 72b, 74a, 74b) which differ from one another.

The application discloses a construction method of cold speed-structure-strength three-field coupling of a railway wheel, and is based on the principle of consistency (equivalence), that is, the cooling rate / temperature field change of the ferrite-pearlite two-phase material with the same chemical composition and different cooling conditions must be the same or equivalent at the consistent place of structure and performance. The actual production process is used to prepare a physical wheel, which is used as a reference. Microstructure and static strength data of a plurality of characteristic points on a certain path of the wheel rim are collected. A new method of instrumented indentation for measuring static strength and quantitative analysis of microstructure are used under laboratory conditions. Through the two media of microstructure and static strength, the correspondence between the production actuality and the laboratory under two different heat treatment cooling conditions is established. Finally, a high-efficiency and low-cost characterization method of railway wheel heat treatment "cold speed-structure-strength" three-field coupling is formed.

To detect and isolate defects in railway wheels under heavy loads.SOLUTION: The railway wheel impact load detection test panel included an auxiliary measuring rail adjacent to the field side of the stock rail or running rail of the railway section to increase the distance specified for a rail car wheel to traverse the measuring rail in the test panel. The measurement rail includes an optical strain gauge for detecting an impact load of the wheel. The detected impact data is correlated with characteristics of the wheel damage to identify a wheel to rebuild or replace before failure occurs.SELECTED DRAWING: Figure 6

The truss robot is characterized in that a room of a railway wheel production workshop internally comprises a stand column track, a wheel storage logistics system and the truss robot, and the wheel storage logistics system comprises the wheels and the wheel hanging seats; the wheel hanging seat comprises a base and a hanging rod fixed to the center of the base, and a plurality of wheels are horizontally stacked on the base. The truss robot comprises a clamping jaw device, the truss robot can grab the horizontal wheels and the wheel lifting seats through the clamping jaw device, and the horizontal wheels and the wheel lifting seats can be lifted to respective set positions in the area of the two stand column rails; the device has the main advantages of high efficiency, low comprehensive investment and small occupied area.

The invention relates to a chuck (10) with a chuck body (11) which has a drive side (12) provided for connection to a rotary drive (91) of a machine tool (90) and a workpiece side (13) provided for mounting a workpiece (100), wherein the chuck (10) has a clamping device (30) with jaws (31-33) adjustable between a clamping position (SP), in which the clamping device clamps the workpiece to the chuck (10), and a release position (LP), in which the clamping device releases the workpiece, the jaws being guided on jaw guides (40) arranged on the workpiece side at angular intervals about the longitudinal axis (L) between the release position and the clamping position (SP) and being driven by a clamping drive body (34) driven from the drive side (12) between the release position and the clamping position (SP), wherein a lever mechanism (50) is arranged between each jaw and the clamping drive body.which transmits a drive movement of the clamping drive body into a clamping movement of the respective jaw between the release position and the clamping position (SP), wherein a respective lever mechanism (50) comprises a clamping lever (51) which is received in a lever receptacle (15) of the chuck body (11) and pivotably mounted by means of a lever pivot bearing (54) arranged on the lever receptacle, which is arranged between a drive arm (52) of the clamping lever coupled to the clamping drive body and an output arm (53) of the clamping lever coupled to the jaw. The lever receptacle has a lever mounting opening (17) arranged on the workpiece side and / or on an outer circumference (14) of the chuck body (11) extending about the longitudinal axis (L), through which the clamping lever can be inserted into the lever receptacle and mounted in the lever receptacle.

A railroad wheel impact load detection test panel includes a secondary instrumentation rail proximate a field side of a primary or running rail of a section of railroad track, and elevated a prescribed distance so that the wheels of a rail car traverse the instrumentation rail within the test panel. The instrumentation rail includes an optical strain gauge to sense the wheel impact load. The sensed impact data is correlated with wheel damage signatures to identify wheels to be restored or replaced before failure occurs.