55 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.

The invention provides a rolling contact fatigue internal crack propagation test method based on additive manufacturing, belongs to the technical field of rolling part near-surface fatigue crack propagation research, and aims to solve the technical problems that the rolling contact fatigue internal crack propagation process is difficult to monitor, the propagation path and the propagation rate are not clear and the like. The method comprises the following steps: preparing a rolling contact fatigue sample containing internal buried defects through additive manufacturing, carrying out a rolling contact fatigue experiment by using a rolling contact fatigue testing machine and changing different experimental parameters, monitoring the expansion behaviors of internal cracks under different cycle times through industrial CT, obtaining an expansion rate curve of the cracks, and researching the crack formation mechanism. According to the method, the expansion behavior of the rolling contact fatigue II-III type composite crack can be reproduced, and technical support is provided for research on engineering problems of railway vehicle rim cracks, steel rail nuclear damage, bearing raceway surface stripping and the like and the rolling contact fatigue theory.

The invention relates to a railway wheel boring machine for machining a hub hole of a railway wheel. A railway wheel boring machine for machining a hole (16) in a hub (15) of a railway wheel (10) comprises a base (101), a column (102), a working head (103) sliding on the column (102), a rotating boring bar (104) arranged on the working head (103), and a non-rotating clamping plate (105) having a clamping unit (106) for clamping and centering the railway wheel (10), the clamping unit comprises at least three jaws (118) moving along a rectilinear path (T) converging at a center (C ') of the non-rotating clamping plate (105), where each jaw is attached to a transfer bar (119) having a first end (120) attached to the jaw (118) and a second end (121) attached to a swivel ring (122) driven by an actuator (123), where the actuator (123) is configured to actuate the actuator (123) to drive the jaw (118) to move along a rectilinear path (T) converging at a center (C') of the non-rotating clamping plate (105). The actuator (123) rotates the swivel ring (122) to drive the transfer bar (119) and move the jaw (118) to secure the railway wheel (10).

The utility model discloses a railway wheel on-line detection probe array with probes capable of being quickly disassembled and assembled. The railway wheel on-line detection probe array comprises a cover plate, an auxiliary plate, the probes, probe springs and a base, the auxiliary plate is positioned below the cover plate, and the auxiliary plate and the cover plate are mutually independent and are fixed on the base through respective fixing structures; the through holes in the cover plate and the modeling holes in the auxiliary plate are in one-to-one correspondence and are matched with the arrangement of the probes, and the upper parts of the probes are integrally embedded in the auxiliary plate and the cover plate, so that the probes can conveniently protrude out of the modeling holes and the through holes; the bottom of each probe is arranged on the base through a probe spring; the modeling hole comprises a first clamping position and a second clamping position, a convex area is arranged at the second clamping position, and the first clamping position presses a probe spring below the probe so that the probe spring cannot be completely popped out; and the second clamping position enables the probe spring to push the probe to pop out of the convex area. According to the utility model, the maintenance time is greatly reduced, and the probe is more efficiently maintained and dismounted by using limited skylight point time; the device is suitable for most of original probe arrays, the original equipment is slightly changed, and the cost is saved.

Auxiliary unit for railway wheel sets, with hollow shafts of lightweight construction, which is designed as an electric machine (E-machine) with a reduction gear connected to it for starting and transporting a railway carriage, wherein the E-machine and the reduction gear are mounted on a common rotor shaft, and which comprises a connection unit which is firmly connected to the front of the auxiliary unit towards the bearing cover.

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.

A railway wheel that is capable of suppressing the propagation of cracks is provided. A railway wheel according to the present disclosure includes a hub part, a rim part including a tread and a flange, and a web part. In the railway wheel, in an outer layer of the rim part that includes the tread, an elastic limit σ0 is 430 MPa or more, an initial kinematic hardening coefficient C is 130 GPa or more, and a kinematic hardening coefficient reduction ratio γ is 400 or less. The initial kinematic hardening coefficient C and the kinematic hardening coefficient reduction ratio γ satisfy Formula (1).[Expression⁢ 1]470≤Cγ⁢{1-exp⁡(-0.007⁢γ)}(1)

This disclosure relates to the inspection of train wheels while mounted on a train that is moving on a railroad track. A magnetostrictive EMAT transducer is built using an RF Coil, a static biasing magnetic field, and a strip of highly magnetostrictive material. This magnetostrictive EMAT transducer is subsequently attached to a rail on the track so the wheel tread of the moving train can contact and apply downward pressure on the magnetostrictive EMAT transducer. A mechanism under the transducer provides enough counterforce to pressure-couple the transducer with the tread of the wheel. Once the transducer is ultrasonically coupled with the wheel, an ultrasonic instrument sends a pulse to the transducer generating a Shear Horizontal wave that travels circumferentially following the tread body. The Shear Horizontal wave generated with this magnetostrictive strip EMAT transducer penetrates deep into the wheel tread and permits detection of both surface and internal defects.

To provide a railway wheel that exhibits superior wear resistance and further enables suppression of a quenched layer.SOLUTION: A railway wheel of the present disclosure comprises: a rim portion; a boss portion; and a plate portion disposed between the rim portion and the boss portion and linked to the rim portion and the boss portion, wherein the railway wheel comprises in mass%: C: 0.65-0.84%, Si: 0.10-1.00%, Mn: 0.05-0.80%, P: 0.050% or less, S: 0.040% or less, N: 0.0200% or less, and Sn: more than 0.50% to 1.50%, with the remainder being Fe and impurities. In the microstructure of the rim portion, the pearlite area ratio is 95.0% or more. A formula (1) is satisfied. Sn / Mn≥2.0 (1).SELECTED DRAWING: Figure 1

The utility model relates to a boring machine for a railway wheel, which is used for machining a hub hole of the railway wheel. A railway wheel boring machine for machining a hole (16) in a hub (15) of a railway wheel (10) comprises a base (101), a column (102), a working head (103) sliding on the column (102), a rotating boring bar (104) arranged on the working head (103), and a non-rotating clamping plate (105) having a clamping unit (106) for clamping and centering the railway wheel (10), the clamping unit comprises at least three jaws (118) moving along a linear path (T) converging at the center (C ') of the non-rotating clamping plate (105), each jaw being attached to a transfer bar (119) having a first end (120) attached to the jaws (118) and a second end (121) attached to a swivel ring (122) driven by an actuator (123), the actuator (123) being configured to actuate the jaws (118) in the non-rotating clamping plate (105). The actuator (123) rotates the swivel ring (122) to drive the transfer bar (119) and move the jaw (118) to secure the railway wheel (10).

In order to accomplish all the objects mentioned above and to be revealed from the detailed description below, the present invention relates to a cleaning assembly (10) for use in rail systems current. Accordingly, the novelty is that it comprises at least one fluid tank from which the fluids are supplied, at least one pre-cleaner (20) that provides air spraying partially in front of at least one wheel (50) and / or rail (70) according to the direction of travel in order to increase the friction coefficient between the rail (70) and at least one wheel (50), at least one fluid provider (30) that provides cleaning by spraying liquid or vapor onto at least one wheel (50) or rail (70), at least one rail drying nozzle (41) to dry the rail (70), at least one rail groove drying nozzle (42) to dry the rail groove, and at least one wheel drying nozzle (43) allowing at least one wheel (50) to be dried.

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 utility model discloses a rim scanning transverse wave adjustment-free probe support, which belongs to the technical field of railway wheel rim detection devices and comprises a middle transition block, a transition block shaft, a shaft seat and a shaft seat fixing beam. Middle transition block center holes are formed in the middle of the middle transition block and the middle of the transition block shaft, a shaft seat hole is formed in the middle of the shaft seat, the transition block shaft is inserted into the shaft seat hole, the shaft seat is connected with a shaft seat hole locking screw and a shaft seat fixing screw, a screw hole is formed in the shaft seat fixing beam, and the shaft seat fixing beam is connected with the shaft seat hole locking screw. And the shaft seat is connected with the shaft seat fixing beam through a shaft seat fixing screw. The probe can be accurately and stably installed and replaced, the probe needs to be finely adjusted only during primary installation, the posture of the probe can be kept in the previous state when the probe is replaced, and the process of fine adjustment again is omitted.

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.

A system is described for the diagnosis of the operating conditions of joints between rails, including: a frame configured for installation on a railway vehicle at a wheel of the railway vehicle, a first distance sensor and a second distance sensor installed on said frame and arranged in such a way as to be on opposite sides of a wheel of the railway vehicle, each of said first distance sensor and second distance sensor being configured to detect, respectively, a first distance and a second distance between said frame and a top of a rail, and a third distance sensor installed on said frame and configured to detect a third distance of said frame with respect to a journal box associated to the wheel of the railway vehicle.

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.,

The invention discloses a railway wheel of a metal carbon fiber composite structure and a manufacturing method, the railway wheel of the metal carbon fiber composite structure comprises a metal wheel core, a wheel disk, a metal wheel rim and a positioning assembly, the metal wheel core is sleeved with the wheel disk in a limiting mode, the wheel disk is sleeved with the metal wheel rim, and the positioning assembly is arranged between the wheel disk and the metal wheel rim. The positioning assembly is used for limiting the spoke plate and the metal wheel rim and comprises a positioning block and a positioning pin, the positioning block is arranged between the spoke plate and the metal wheel rim, and the positioning pin penetrates through the positioning block to be fixedly connected with the spoke plate. The overall structure is simple, the wheel disks are made of carbon fibers, the overall strength of the wheel is effectively guaranteed, meanwhile, the overall weight and the noise reduction effect of the railway wheel are effectively reduced, the metal wheel core, the wheel disks and the metal wheel rims are connected in an assembled mode, the replacement cost is effectively reduced, and waste is avoided.

Rail vehicle wheel-track interaction (VTI or WTI) is monitored at a sensing region of a railway track. An ultrasonic sensor ‘S’ is mountable on the track to form the sensing region ‘R’, which comprise

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;

The invention discloses a cooling water flow control method and system in the railway wheel quenching process, and relates to the technical field of wheel heat treatment. According to the cooling water flow set value of the quenching process and the predetermined optimal pipeline structure corresponding to different cooling water flow ranges, the optimal pipeline structure is determined and put into use; inquiring a preset value buffer page table according to a cooling water flow set value of a quenching process, if the preset value buffer page table is hit, acquiring a corresponding proportional valve opening value as a proportional valve opening initial value, and if the preset value buffer page table is not hit, acquiring a corresponding proportional valve opening value as a proportional valve opening initial value from a pipeline flow page table according to a flow deviation minimum principle; storing the obtained opening value of the proportional valve and the flow value corresponding to the opening value into a preset value buffer page table; and the opening degree of the proportional valve is adjusted to the opening degree initial value of the proportional valve, quenching is started, and PID closed-loop control is conducted. According to the invention, rapid and accurate control of the cooling water flow in the wheel quenching process can be realized.