2148 results about "Bogie" patented technology

The invention relates to a digital twinning-based bogie numerical control machining error compensation method and system, and the method comprises the steps: constructing an initial digital twinning model comprising material characteristics and geometric constraints through fusing the historical machining data of a bogie and the structural characteristics of a workpiece; according to the real-time cutting force and temperature data dynamic correction model, time-varying stiffness parameters are updated, and a deformation prediction result is generated; identifying an error exceeding area based on the precision requirement of the bearing seat assembly surface; and the feed rate compensation amount is calculated according to the thin-wall area deformation gradient, and a pre-compensation parameter scheme used for adjusting the cutting path is generated. The method overcomes the industrial problems that a traditional compensation technology cannot dynamically suppress instantaneous deformation, multi-source error coupling is difficult to decouple, and parameter adjustment depends on trial cutting verification, and the machining precision and efficiency of the bogie are remarkably improved.

The invention relates to the technical field of train monitoring, and discloses a metro bogie bolt looseness detection method based on multi-dimensional visual combined driving, which comprises the following steps: acquiring bolt two-dimensional image data and bolt three-dimensional image data of a key part of a metro bogie; performing data enhancement on the two-dimensional image data of the bolt, inputting the two-dimensional image data into a BOLT-YOLO bolt detection model to identify key parts of the subway bogie, outputting a bolt image containing the key parts, and numbering each key part; obtaining an independent bolt area image, inputting the image into the Unet semantic segmentation network model to identify two sections of bolt anti-loosening lines, and judging the loosening state through the angle change of the anti-loosening lines and the bolts; if the two-dimensional image information is insufficient, a three-dimensional point cloud model of the bolt is generated, and whether the bolt exceeds an error range or not is judged through accurate registration and datum plane height difference calculation; according to the method, the abnormal state of the train bolt can be detected in real time, the detection precision is improved, and the resource utilization rate is reduced.

One variation of a system includes a modular kit. The modular kit includes: a driven axle configured to install on a bogie chassis supporting a trailer chassis of a trailer; a motor coupled to the driven axle; a battery assembly; a set of electrical cables; and a cable carrier. The battery assembly includes a set of retention features configured to transiently engage a set of engagement features on the trailer chassis to couple the battery assembly to the trailer chassis and is configured to: supply electrical energy to the motor to drive the driven axle; and receive electrical energy from the motor to regeneratively brake the driven axle. The set of electrical cables are configured to electrically couple the motor and the battery assembly. The cable carrier is configured to: locate between the bogie chassis and the battery assembly; and support the set of electrical cables over a range of longitudinal positions.

The invention relates to the technical field of railway vehicles, and provides a wheel set, a bogie and a railway vehicle. The wheel pair comprises a shaft sleeve structure, an axle, a pair of wheels and a connecting structure; the axle is rotationally arranged in the shaft sleeve structure; the pair of wheels is arranged at the two ends of the shaft sleeve structure respectively and rotationally connected with the shaft sleeve structure. The connecting structure is connected with the axle and the wheels and used for achieving synchronous rotation of the axle and the wheels. According to the wheel set, the bogie and the railway vehicle, the wheels are rotationally connected with the shaft sleeves, the axles are rotationally connected with the shaft sleeves, synchronous rotation between the axles and the wheels is achieved through the connecting structures, torque is transmitted between the axles and the wheels, the shaft sleeves bear bending moment, and therefore decoupling of the torque transmission function and the bearing function is achieved; the requirement on the strength of the axle is effectively reduced; in addition, the freedom degree of structural design is improved, and the overall weight is reduced.

The invention relates to the technical field of belt conveyor dynamic characteristic research, in particular to a trailer type belt conveyor dynamic characteristic simulation method, which comprises the following steps: respectively carrying out stress analysis on a trailer frame, each wheel and a conveying belt unit in a trailer unit, and sorting the degree of freedom; establishing an overall coordinate system, a vehicle body coordinate system, a contact coordinate system and a conversion relation; respectively establishing kinetic equations of the wheel pair and the vehicle supporting frame; kinetic parameters of the trailer unit are determined; according to the Hamiltonian principle, a vehicle supporting frame vertical motion equation and a vehicle supporting frame nodding motion equation are established, and then a linear second-order differential equation of a vehicle supporting unit is obtained; and compiling a calculation program by using numerical calculation software, and simulating the wheel-rail vibration characteristics of the trailer unit in the straight-line-segment advancing process. On the basis of the multi-degree-of-freedom multi-body dynamics theory, a trailer type belt conveyor system nonlinear dynamics equation is constructed, and a wheel pair, a trailer frame and a six-degree-of-freedom motion equation for coupling the wheel pair and the trailer frame are analyzed.

The invention discloses a railway bogie bearing fault diagnosis method and equipment based on a feature extraction network, and relates to the field of intelligent diagnosis and maintenance guarantee of urban rail trains. The method comprises the following steps: data acquisition: acquiring vibration signals of a bogie axle box bearing under the same rotation speed and load combination; performing data preprocessing: performing frequency spectrum adaptive decomposition on each section of signal based on improved empirical wavelet transform, introducing a Fisher score and frequency spectrum entropy joint scoring mechanism, screening out key modal signals, and then performing image mapping to reconstruct a diagnosis sequence; model construction: introducing a topology perception attention mechanism module on the basis of the lightweight convolutional neural network, and constructing a fault diagnosis model; model training: training the fault diagnosis model to obtain an optimized fault diagnosis model; and diagnosis result output: using the optimized fault diagnosis model to diagnose the fault signal of the bogie axle box bearing, and outputting the diagnosis result. The method can improve the accuracy of fault diagnosis.

The invention relates to the technical field of railway vehicles, and provides a shaft sleeve structure, a wheel set, a bogie and a railway vehicle. The shaft sleeve structure comprises a first shaft sleeve and a second shaft sleeve; the first shaft sleeve and the second shaft sleeve are coaxial, are arranged on the two sides of the gearbox respectively and are suitable for being fixedly connected with the gearbox respectively. The first shaft sleeve and the second shaft sleeve are respectively provided with an axial shaft penetrating hole, and the shaft penetrating holes are suitable for penetrating an axle coaxially fixed with a wheel; the first shaft sleeve comprises a first pipe body close to the gear box and a second pipe body far away from the gear box, the second shaft sleeve comprises a second pipe body, the first pipe body is of a sleeve structure with a round inner side and a square outer side, and the second pipe body is of a round sleeve structure and is suitable for being rotationally connected to the inner side of a wheel. The axle can only transmit torque, the first shaft sleeve and the second shaft sleeve play a bearing role, the torque transmission function and the bearing function are decoupled, good bending resistance is achieved, and the safety coefficient is effectively improved.

The invention relates to the technical field of train bogies, and discloses a deep learning-based railway bogie structure optimization method and system, and the method comprises the steps: collecting a three-dimensional geometric model of a bogie bolster, and constructing a finite element simulation model; and applying a combined load to the swing bolster structure based on finite element simulation to obtain a stress map of the swing bolster structure. And mechanical indexes are extracted to judge whether structure optimization is performed or not. And when optimization is judged to be carried out, a deep learning model is trained based on historical structure samples. And inputting the to-be-optimized swing bolster structure parameters into the deep learning model to obtain parameter adjustment suggestions for optimization. And reconstructing the bolster structure model according to the parameter adjustment suggestion, carrying out finite element verification, and judging whether the optimized structure meets the target performance index requirement or not. According to the method, the design efficiency is improved, the development period is shortened, and efficient collaborative optimization of the railway bogie swing bolster structure among multi-target performance such as strength, rigidity, modality and fatigue life is achieved.

Provided is a rail car that is capable of efficiently transmitting vibrational forces that have been transmitted from a bogie via a yaw damper and a yaw damper support to an underframe to a rail car shell, and that is of a simple structure, sufficient mechanical strength, and light weight for reducing the amount of heat applied to perform welding and for allowing a nondestructive inspection to be performed with ease. The rail car includes a rail car shell, a bogie that supports the rail car shell, a yaw damper having an end connected to the bogie, and a yaw damper support to which another end of the yaw damper is connected. The rail car shell includes an underframe including a floor assembly providing a floor and a bolster beam joined to the floor assembly, and a pair of side structures erected at both transverse ends of the underframe. In this rail car, the yaw damper support is fixed to a transverse end of the bolster beam.

The invention discloses a straddle type monorail train bogie and a straddle type monorail train. The straddle type monorail train bogie comprises a framework assembly, a walking wheel assembly, a driver, a planetary gear reducer, a brake and a fixing assembly, walking wheels in the walking wheel assembly are detachably and fixedly connected through hubs and axles, and the driving wheel is fixedly connected with the planetary gear reducer through the fixing assembly; the wheel axle and the driver are in transmission connection through the planetary gear reducer, so that power of the driver is transmitted to the wheel axle after being decelerated through the planetary gear reducer to drive the walking wheels to rotate and drive the vehicle body to run; the fixing assembly is detachably and fixedly connected with the connecting beam of the framework assembly, so that the fixing assembly detachably clamps the wheel shaft, the brake, the walking wheel assembly, the planetary gear reducer and the driver to be integrated into an integrated assembly, and the whole integrated assembly is detachably clamped by the fixing assembly and the connecting beam. The integrated assembly can be separated from the connecting beam by detaching the fixing assembly, and the walking wheels on the integrated assembly are detached after the integrated assembly is separated from the framework assembly, so that the walking wheels are not detached and replaced, the wheel replacement time is saved, and the wheel replacement efficiency is improved.

The present disclosure relates to a computer-implemented method for determining a real time steering angle (58) for a railway bogie (1) and to a control device (40) which is configured to perform the method, the method comprising: deter-mining by a sensor assembly at least one lateral real time sensor signal (38), which is characteristic for a lateral position of a tread of at least one wheel of the railway bogie (1) with respect to a railway track, determining, by means of a positioning algorithm (47), a real time position and / or orientation of the railway bogie (1) with respect to the railway track (31), using the received at least one lateral real time sensor signal (38) and determining the real time steering angle (58) for steering of the railway bogie (1), using the determined real time position and / or orientation of the railway bogie (1).

The present invention provides a bogie wheel set lifting structure, which includes a bogie and an axle box body located below the bogie; the axle box body includes a bearing box and a bearing box base integrally connected to the lower end of the bearing box; two primary rubber springs are arranged between the bogie and the bearing box base; the two primary rubber springs are respectively located on both sides of the bearing box; each primary rubber spring includes a metal outer shell; each metal outer shell is provided with a convex block; a vertical chute is respectively arranged on both sides of the bearing box; a lifting stop is arranged at the upper end of the vertical chute; each convex block can be slidably inserted and installed in a vertical chute. The present invention can not only realize the function of wheel set lifting, but also meet the strength requirements under running vibration and impact. When a large horizontal load appears between the bogie and the wheel set axle box, a reliable horizontal limit connection can be generated between the convex block and the chute, ensuring the stability of the horizontal connection between the bogie and the wheel set axle box and preventing large horizontal displacement of the primary rubber spring.

A monorail bogie frame clamping device and a frame machining method. The monorail bogie frame clamping device is used for fixing a frame (100), and comprises a one-step machining clamping device (200) and a two-step machining clamping device (300); the frame (100) is arranged on the one-step machining clamping device (200) in a horizontal state; the one-step machining clamping device (200) is used for completing position adjustment and clamping of the frame (100) in the horizontal direction; the frame (100) is arranged on the two-step machining clamping device (300) in a vertical state; and the two-step machining clamping device (300) is used for completing position adjustment and clamping of the frame (100) in the vertical direction. When in use, the frame (100) is clamped by the one-step machining clamping device (200) in the horizontal direction, and the frame (100) is machined by means of a vertical machining center; and the frame (100) is then clamped by the two-step machining clamping device (300) in the vertical direction, and the frame (100) is finally machined by means of a horizontal machining center, so that in the machining process of the frame (100), the frame (100) is quickly and firmly clamped, and the position of the frame (100) does not need to be adjusted multiple times during machining, thereby improving the machining precision of the frame (100).

A bogie assembly includes a bolster having a plate on which a rail vehicle is supported, and side frames disposed on opposite sides of the plate of the bolster. The side frames can have pedestal jaw ends that can couple with wheelsets of the rail vehicle. The side frames can have openings sized to receive the bolster and springs between spring seats of the side frames in the openings and the bolster. The side frames also can include unit guide pockets that can receive brake beams that move during engagement or release of brake shoes from wheels in the wheelsets. The unit guide pockets can be located below the spring seats in the side frames.

The invention discloses a bogie detection system and a control method thereof, and the system comprises a guide rail which is provided with a detection station; the height detection device is arranged above the detection station, and the height detection device is used for detecting the height of the bogie; the first image detection device is arranged below the detection station, and the first image detection device is used for carrying out image detection on the bottom of the bogie while carrying out height detection; and the second image detection device is arranged on the side surface of the detection station and is used for carrying out image detection on the side surface of the bogie while carrying out height detection. Bogie height parameter and multi-view image acquisition and multi-modal data fusion analysis are synchronously completed at a single station, the defect recognition accuracy is improved, the labor intensity of detection personnel is remarkably reduced, the repeated configuration of equipment is reduced through station integrated design, the detection period is effectively shortened, and the workshop space is saved. And an efficient intelligent detection solution is provided for manufacturing of rail transit equipment.

The invention provides a multifunctional loading system and a control method thereof. The multifunctional loading system comprises a prepared material conveying line; the supporting mechanism is driven by the transverse movement driving mechanism to transversely move; the conveying mechanism is installed on the supporting mechanism, an installation area is formed between the conveying mechanism and the supporting mechanism, the conveying mechanism comprises a plurality of feeding pieces which are driven by a feeding driving mechanism to feed materials towards the corresponding material preparation conveying lines, and containing areas are arranged among the feeding pieces; the steering mechanism comprises a steering frame located in the containing area and lower than the tops of the multiple feeding pieces, a rotation driving mechanism located in the mounting area and used for driving the steering frame to rotate, and a lifting driving mechanism located in the mounting area and used for driving the steering frame to ascend and descend. Through the bogie, goods input to a plurality of feeding pieces can be jacked and steered, the transverse movement driving mechanism is matched to drive the supporting frame to transversely move and position, the function that the conveying mechanism can input the goods into a material preparation conveying line one by one according to different layout modes is achieved, and the adaptability of the loading system is improved.

The bogie weighing device comprises a weighing valve and a force transmission mechanism, an air inlet of the weighing valve is communicated with an auxiliary air cylinder, an air outlet of the weighing valve is communicated with a distribution valve in a vehicle braking system, the weighing valve is fixed to a framework of a vehicle bogie, and the force transmission mechanism is connected with the framework and can rotate around a connecting point. One end of the force transmission mechanism is connected with the weighing valve, and the other end of the force transmission mechanism is connected with the hanging bracket. Stepless regulation of vehicle braking can be achieved.

The invention relates to the technical field of urban rail train safety detection, and discloses a mechanical rail train detection method and system with a real-time detection function, and the method comprises the steps: collecting the states of obstacles on the two sides of a bogie and normally open and normally closed contacts of derailment detection travel switches; calculating a trigger state code; an emergency or non-emergency braking signal is output and an alarm is given; and when the state returns to normal and a reset instruction is received, the alarm is released and the initial state is recovered. In the prior art, obstacle or derailment detection is realized by depending on a multi-stage sensor and an electronic control unit, and especially in complex operation environments of high electromagnetic interference, high humidity dust and the like, stable and low-fault-rate real-time detection cannot be realized. Due to the fact that a redundancy judgment mechanism combining a pure mechanical structure and the vehicle programmable logic control unit LCU is adopted, high-reliability real-time detection of the obstacle and derailment state is achieved, and the safety and maintainability of a train system are improved.

The utility model relates to a disassembly and assembly clamp for disassembly and assembly of a bogie bolster spring wedge, which comprises an electromagnetic iron core, a coil winding, a pneumatic tool, a pen-shaped cylinder and a clamp supporting seat, the electromagnetic iron core is fixedly arranged on the clamp supporting seat, the pneumatic tool is fixedly arranged on the electromagnetic iron core, the pen-shaped air cylinder is fixedly arranged on the clamp supporting seat, and the pen-shaped air cylinder is connected with an air cylinder ejector pin in the pneumatic tool. The pneumatic ejector pin is controlled to reciprocate by adjusting the air pressure of the pen-shaped air cylinder, so that the pneumatic ejector pin penetrates through the electromagnetic iron core to abut against the inner pillow spring; a coil winding is arranged outside the electromagnetic iron core and can attract the outer pillow spring. The assembling and disassembling clamp adopts the combination form of the electromagnet and the pen-shaped air cylinder, the automatic assembling and disassembling operation of the pillow springs and the wedges of the k2 and K6 bogies is facilitated, the structure is simple, the installation and the maintenance are convenient, and the clamp form is also suitable for the automatic assembling and disassembling operation of the pillow springs and the wedges of the k4 and K5 bogies.

The invention relates to the technical field of electromagnetic heating temperature rise uniformity optimization, and discloses a train frozen coal induction heating temperature rise uniformity optimization method based on a response surface method and multi-parameter optimization. A second-order polynomial response surface model is designed and established by adopting a central composite test, an axisymmetric coil layout based on a first constant parameterization linear dynamic tolerance sequence is designed, and temperature uniformity is represented by sample standard deviation by applying an NSGA-II multi-objective optimization algorithm under the condition that thawing temperature constraints are met. And carrying out Pareto optimization by taking temperature sample standard deviation minimization and average temperature maximization as targets, and finally determining an optimal parameter combination through a TOPSIS decision method. According to simulation verification, the method can effectively improve the uniformity of the electromagnetic heating temperature field of the inner surface of the frozen coal carriage, and a theoretical basis is provided for engineering application.

A system and method are disclosed enabling the use of electromagnetic engines to traverse a wheeled bogie assembly across a plurality of rails. The electromagnetic engines may be used within a rail assembly comprising four rails and a frog assembly. Further, the electromagnetic engines may be used to traverse between a straight path and a turnout path at a non-moving rail switch having a frog assembly. In one aspect, an algorithm for powering various coils is disclosed wherein the algorithm controls the power level to switch tracks connected to the frog assembly.

The invention relates to the technical field of rail transit monitoring, and discloses a multi-sensor fusion rail transit electric passenger car bogie dynamic performance monitoring method. The method comprises the steps that multi-source heterogeneous sensing data such as bogie vibration acceleration time sequence signals, wheel-rail contact force distribution data, bearing temperature gradient data and structural strain field data are collected; analyzing the vibration signal to extract a frequency band energy feature vector, performing spatial gridding mapping on the contact force data to generate a distribution matrix, and performing time-space alignment fusion on the two to form a primary fusion feature set; positioning a bearing temperature anomaly region through a deep convolutional network, and generating a secondary fusion feature set in combination with a structural strain concentration coefficient; and inputting the two-stage feature set into a dynamic performance evaluation model, outputting a performance degradation index set of scores of axle box bearing wear degree, framework fatigue cumulant, wheel set tread damage and the like, generating a maintenance priority sequence and triggering a preventive maintenance instruction according to the performance degradation index set, and realizing accurate monitoring and efficient operation and maintenance management and control of the dynamic performance of the bogie.

The application discloses a bogie covering device, a bogie and a railway vehicle, and relates to the technical field of railway vehicles. The bogie covering device comprises a mounting cross beam, which is used for fixedly connecting to a frame body of the bogie; at least two mounting plates, which are fixedly arranged on the mounting cross beam, and at least one of the mounting plates is used for fixedly connecting to the frame body of the bogie; and at least one of the mounting plates is provided with a containing portion for containing an axle-mounted brake disc, and the bottom of the containing portion is protrusively arranged towards the outer surface of the mounting plate. The bogie covering device in the application can be applied to the bogie with a large-size axle-mounted brake disc; in the process of running, the airflow can be prevented from entering the bogie device through the avoiding holes to generate the aerodynamic resistance, most of the airflow can flow along the bottom surface of the bogie covering device from the outside of the bogie covering device, and compared with the airflow directly flowing through the complex components in the bogie covering device, the aerodynamic resistance can be effectively reduced.

The invention provides a split compound brake device, a disassembly and assembly method thereof and a railway vehicle, the split compound brake device comprises a shell main body, a mandrel, a split static disc, a split movable disc and an actuator, and a plurality of guide parts are respectively constructed in the axial direction of the shell main body; the mandrel is configured in the shell main body, and a disc hub with an axial spline is arranged on the mandrel; the split static disc is matched with the guide part and is suitable for sliding along the guide part; the split type movable disc and the split type static disc are matched to form a friction pair and are configured to slide in the axial direction of the disc hub. The actuators are arranged at the two ends of the shell body and are configured to drive the split type static disc and the split type movable disc to extrude and brake each other. The split type movable discs and the split type static discs are matched to form friction pairs, so that the number of the friction pairs can be increased by increasing the number during connection, then the braking force can be adjusted, the braking force does not need to be adjusted by configuring a plurality of brake discs and clamps, and structure simplification and light weight of the bogie are facilitated.

The present invention discloses a track turnout forging device that is convenient for demoulding, which relates to the field of mechanical processing technology, and includes a spraying mechanism and a forging device. The spraying mechanism includes a fixed bracket, a driving module, a bogie and a spraying assembly, wherein the spraying assembly includes a demoulding agent storage box, a pump body, a fixed plate and at least one spraying barrel, the demoulding agent storage box is installed on one side of the fixed bracket, the pump body is fixed on one side of the demoulding agent storage box and the input end is connected thereto, the spraying barrel is rotatably arranged on the lower side of the fixed plate, the fixed plate is fixed on the driving end of the driving module, a plurality of input holes connected to the spraying barrel are opened on the fixed plate, the input holes are connected to the output end of the pump body, a plurality of spraying holes are opened on the surface of the spraying barrel, and a sealing plate is arranged at the bottom of the spraying barrel. The present invention improves demoulding efficiency and quality.

A system and method for scanning and evaluating a portion of rail operable for travel by a wheeled bogie having a plurality of electromagnetic engines. The electromagnetic engines are generally operable to generate an electromagnetic field that is operable to penetrate a rail. A resulting eddy current may be generated that is further operable to penetrate the rail. As the electromagnetic engines travel along the rail, readings from the electromagnetic field and resulting eddy current may be used to detect differences in the rail as measured with respect to a nominal rail. The defects detected may be head checks, cracks, corrosion, etc. Further, a treated rail section may be utilized to strengthen the rail itself without compromising non-destructive evaluation. The disclosed system and method may be embodied as a computer program product.

The railway vehicle bogie shock absorber spring pressing plate easy to replace comprises a cross-shaped steel plate, and the width of a cross arm and the width of a vertical arm of the cross-shaped steel plate are larger than or equal to the outer diameter of a shock absorption spring. The length of a cross arm of the cross-shaped steel plate is smaller than or equal to the width of a spring bearing table top at the bottom of a central square frame of the railway vehicle bogie side frame, and the length of a vertical arm of the cross-shaped steel plate is smaller than or equal to the length of the spring bearing table top at the bottom of the central square frame of the bogie side frame. Damping springs are respectively arranged at the upper parts of two ends of a cross arm and two ends of a vertical arm of the cross-shaped steel plate. According to the utility model, the original rectangular spring pressing plate is replaced by the cross-shaped spring pressing plate, so that the four corners of the spring bearing table top cannot be covered by the spring pressing plate, and the shock-absorbing spring and the spring pressing plate can be conveniently disassembled and replaced under the condition that the car lifting jack is not used by placing the jack on the corners of the spring bearing table top to jack up the swing bolster; and the working efficiency is greatly improved, and the labor intensity of workers and the equipment maintenance cost are reduced.

A covered hopper railcar includes a pair of spaced trucks; a three bay covered hopper railcar body on the pair of trucks; and a partition structure separating each bay from an adjacent bay, wherein each partition structure is extending vertically from sloped floor sheets to a roof structure and extending horizontally between side walls of the railcar body, wherein each partition includes a pair of horizontal ribs.

A method for rapidly solving transient dynamics of a crack-containing bearing structure of a bogie belongs to the technical field of bogie structure dynamic analysis, and comprises the following steps: acquiring a three-dimensional geometric model of the bearing structure, the geometric dimension of a crack and the position coordinate dimension of the crack; dividing the finite element model of the bearing structure, and carrying out grid division processing on the crack surface; selecting a main degree-of-freedom node of the finite element model on the surface of the bearing structure and the crack surface; performing substructure analysis on the finite element model of the bearing structure; obtaining a mass matrix, a damping matrix and a stiffness matrix of the finite element model of the bearing structure after the degree of freedom is reduced; carrying out constraint simulation on a crack surface node by adopting a one-way nonlinear rigidity unit; processing constraint boundary conditions; processing the excitation load; and solving a dynamic second-order differential equation set, and judging whether the crack surface is in contact or not. According to the method, the opening and closing effects of the crack can be considered, the transient dynamic response of the crack-containing bearing structure under the action of the external load is obtained, and the solving precision and efficiency are both considered.

The bolt is an important connecting fastener in important equipment of a train, the intelligent detection method and system for the train bogie bolt are provided in consideration that the bolt is a small part and the tightness state of the bolt on the train needs to be detected, and a visual detection system and a position tracking system are constructed and carried on an inspection robot. The method is used for monitoring the train number of a train, monitoring the position of a bogie in real time, positioning a bolt and finally carrying out abnormity detection on the bolt based on the improved YOLOv8. The method comprises a system triggering module, a position tracking module, a visual positioning module, an image data acquisition module, a data storage and transmission module and a YOLOv8 improvement module. For the visual part, a binocular high-precision industrial camera is used for carrying out image data acquisition on the train bogie bolt, processing the image data, and transmitting the image data to the improved YOLOv8 for detection; the method is suitable for rail train bogie bolt anomaly detection, point cloud processing and image processing are combined, the detection efficiency is high, and the detection result is accurate.