最新刊期
期 1 ， 2021
- 摘要：In view of the service characteristics of driving devices such as construction machinery， aerospace， rail transit and electric vehicle in the variable speed and variable torsion， the damage mechanism of thermal-scuffing failure for gear transmission is expounded， the multi factor coupling correlation relationship of thermal-scuffing is constructed， and the influences of transmission torque， gear speed， oil viscosity and oil temperature on the contact temperature for meshing tooth surfaces are analyzed， the corresponding design ideas to improve the thermal-scuffing load capacity is formed. At the same time， aiming at the combination of 18CrNiMo7-6 carburizing and quenching +ISO-VG 220 lubricating oil transmission gear， series of tests are carried out. The action weights of contact temperature and oil film thickness in thermal-scuffing analysis are determined. The value of failure boundary temperature for thermal-scuffing is also measured， the basis data for accurate evaluation on the gear thermal-scuffing bearing capacity in variable speed and variable torque in engineering application can be provided.关键词：Gear;Thermal-scuffing;Contact temperature;Failure boundary;Lubrication design
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发布时间：2022-11-10 - 摘要：In view of the variability， non-linearity and uncertainty of failure probability distributions of rolling bearing vibration performance， the Hurst index and maximum entropy index of vibration data series are proposed to represent the chaotic characteristics and uncertainty of the rolling bearing vibration performance， respectively. Based on the vibration data series of rolling bearing in service， the Hurst index is obtained using least square method in logarithmic coordinate system， and the chaotic characteristic of bearing operation performance state is judged in the corresponding time period of each vibration sequence. The maximum value of entropy of each vibration sequence is solved by utilizing the maximum entropy method， so as to quantitatively analyze the uncertainty of bearing vibration performance. To analyze the nonlinear correlation degree between chaotic characteristics and uncertainty of bearing vibration performance， the grey relation analysis method is applied to calculate the grey confidence level between Hurst index and maximum entropy sequence after mean normalization. In the two cases， the grey confidence levels between Hurst index and maximum entropy sequence are 96.99% and 82.1%， respectively， which show that the relationship between chaotic characteristics and uncertainty of bearing vibration performance is very close.关键词：Rolling bearing;Chaotic characteristic;Uncertainty;Hurst index;Maximum entropy;Grey relation analysis method;Grey confidence level
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发布时间：2022-11-10 - 摘要：At present， the traditional Archard wear model is mostly used to study the influence of wear on the dynamic characteristics of gears， without considering the lubrication characteristics of gears, and the main research objects are mostly straight gears. In order to make up for the shortage of research on helical gear， the wear process under mixed elastohydrodynamic lubrication is numerically simulated. An eight-degree of freedom dynamics model of helical gear is established to investigate the influence of tooth surface wear on gear dynamic characteristic. The gear fatigue test is carried out on a helical gearbox test rig to validate the numerical results. The results show that the wear mainly occurs on the region close to the tooth root and tooth tip， and the maximum wear occurs at the tooth root due to the relative high sliding-to-roll ratio. The variation of the amplitudes of the gear meshing frequency and its harmonics demonstrates that the wear causes an increase in gear vibrations. The experimental results show a good agreement with the numerical results， which implies the study can provide a reliable theoretical basis for the prediction and fault diagnosis of helical gear wear.关键词：Helical gear;Mixed EHL lubrication;Wear;Time-varying characteristic;Archard model
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发布时间：2022-11-10 - 摘要：Based on the classical space meshing theory， two kinds of basic eigenfunctions and eigenvectors of conjugate surfaces are defined. The function of the two kinds of eigenfunctions in the analysis of the meshing characteristics of conjugate surfaces is described. The expression of the parameters related to the meshing motion of conjugate surfaces is presented. Two kinds of characteristic functions are used in the meshing motion characteristics study of hypoid gears， and the analysis of influence laws of cutter head radius on the tooth surface suction speed， slide-to-roll ratio and comprehensive curvature radius is carried out. The results show that a smaller cutter radius is more beneficial to improve the contact and lubrication performance of the gear pair. It lays a foundation for further topological design and meshing performance control of tooth surface.关键词：Conjugate surface;Meshing limit;Induced curvature;Slide-to-roll ratio
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发布时间：2022-11-10 - 摘要：An approach of analysis of static load sharing based on meshing characteristics for straight bevel gears split transmission is proposed to improve meshing performances. The initial contact clearances of each gears pairs are obtained through establishing the tooth contact analysis method for multi-gear （MTCA） by considering alignment error of the center gear. A statics balance equation considering the coupling of support deformations and torsion deformations of each gear pairs and the meshing deviation caused by the initial contact clearances are established to study the floating characteristics of the center gear based on lumped-parameter analytical model. The static load sharing coefficient of each split is obtained by solving the equation， and the influences of loads， alignment errors and support stiffness on it are analyzed. The results show that static load sharing coefficient increases gradually with the increase of both support stiffness and the alignment errors， the influences of axial and bias alignment error on it are the same level. The load sharing coefficient decreases with the increase of torques. The magnitude of transmission errors represent the variation law that the larger the initial clearances of the tooth， the smaller the load sharing coefficient. It provides a theoretical reference to analysis load sharing for high precision straight bevel gears split system.关键词：Power split;Straight bevel gear;Tooth contact analysis for multi-gear;Static load sharing;Meshing characteristic
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发布时间：2022-11-10 - 摘要：Due to the complex operating conditions of the gearbox with variable speed， the frequency of the gearbox is unstable， the weak fault signal of the gear box may be hidden in the strong noise， it is not possible to directly apply the traditional time-frequency analysis method， which increases the difficulty of fault feature extraction. For the processing of the variable speed signal， the traditional calculation order analysis （COT） can solve the problem that the fault features of the variable speed gearbox are difficult to be extracted. However， because the resampling method used in the traditional COT is based on spline interpolation method， the frequency cannot be selected according to the frequency， resulting in uneven resampling interval. An improved order analysis is proposed， which resamples according to the angular velocity of each sampling point in order to improve the accuracy of order analysis， the accuracy of the order analysis is improved. At the same time， the noise of variable speed gearbox is more serious because of the complexity of power transmission. The variational mode decomposition （VMD） is often used to eliminate complex signal noise and extract weak fault signals hidden in strong noise. An adaptive VMD using energy method is proposed to determine the number of decomposition layers and then select the components for indexing， so that the effect of denoising is further improved. Through the analysis of the experimental signals， the method is used to verify the results. The results show that the method can effectively transform the signal of the gearbox with variable speed into the signal of order and identify the fault.关键词：Variable speed gearbox;Order analysis;Variational mode decomposition;Adaptive decomposition
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发布时间：2022-11-10 - 摘要：In order to ensure the safety of dual manipulator in public space， an accurate and efficient collision detection algorithm is proposed. The sphere and capsule bounding boxes are used to simplify the manipulator model， and the collision is judged according to the intersection between the bounding boxes. The second projection method is used to achieve fast detection. The bounding box is projected into line segments. If the projection line segments are not overlapped， the bounding box will not intersect. If the projection line segments are overlapped， the problem is further transformed into the shortest distance solution from point to point， point to line and line to line. Through the analysis of the simulation software and physical manipulator experimental platform， the results show that the algorithm has high detection efficiency and can be directly implanted into the manipulator controller program， meet the safety requirements.关键词：Dual manipulator;Collision detection;Bounding box;Capsule;Second projection
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发布时间：2022-11-10
Theory·Reserach
- 摘要：Due to its great advantages of high speed， reliability and transmission accuracy， the globoidal cam mechanism is widely used in various transfer mechanical equipment. In order to promote the research and development of intelligent manufacturing of basic components， and meet the needs of customized production， the design method of mathematical model of electromechanical controlled globoidal cam system is presented. Then， it is applied to the turning and lifting device of globoidal cam manipulator， and the dynamic characteristics and kinematic characteristics of the manipulator are analyzed. The research findings show that the electromechanical control globoidal cam system is stable， and the dynamic response is fast by adjusting the control parameters， and the motion characteristics are obviously improved， which meets the design requirements. The research provides a theoretical basis for expanding the application field of globoidal cam mechanism， lays a foundation for the development of the intelligent globoidal cam system.关键词：Globoidal cam;Mathematical model;Dynamic characteristic;Kinematic characteristic
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发布时间：2022-11-10 - 摘要：An adjustable swing foot rehabilitation robot is proposed. According to the mode of ankle motion and the distribution of acupoint， the whole structure of foot rehabilitation robot is designed， and the motion principle of swing adjustable transmission mechanism is mainly introduced. The inverse method is used to calculate the transmission ratio， the coordinate transformation method is used to solve the kinematics solution of the pose of the pedal， and then the motion equation of the pedal attitude angle is obtained through the inverse solution analysis of the position. The kinematics simulation of virtual prototype is carried out by using SolidWorks software， and the comparison between the theoretical data and the simulation data of transmission ratio confirms the accuracy of theoretical analysis and safety of mechanism design. Finally， the key parameters of swing adjustment are analyzed.关键词：Ankle rehabilitation;Kinematics analysis;Adjustable swing;Footplate massage
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发布时间：2022-11-10 - 摘要：Aiming at the needs of rehabilitation training and movement substitution for the elderly and patients with lower limb movement disorders， a multi-purpose lower limb exoskeleton robot is designed， which utilizes auxiliary standing mechanism and exoskeleton to realize the rehabilitation training of lower limbs for users. Five-bar models of the one-leg support stage and the two-leg support stage of the exoskeleton robot are established， and the dynamics model is deduced by Lagrange method to deduce the theoretical moments required for each joint. A virtual prototype model is established to carry out dynamics simulation， and the simulation data is compared with the theoretical data to verify the rationality of the design of the exoskeleton robot with the accuracy of the theoretical deduction， which provides a theoretical basis for motor selection.关键词：Lower limb exoskeleton;Structure design;Dynamics calculation;Simulation analysis
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发布时间：2022-11-10 - 摘要：A numerical method is proposed to calculate the mesh stiffness of spur gear with considering wear based on the potential energy method and Archard wear equation. A precise profile equation is constructed by generating method principle. Mesh stiffness for a pair of spur gears is calculated by energy method， and the piecewise Fourier serious expansion is employed to fit the total mesh stiffness. The relationship between the normal wear volume and the pressure angle at the meshing point is calculated by adopting the Archard wear equation. And the influence of wear volume on meshing stiffness is analyzed. The numerical results revealed that the wear volume at the root and top of tooth is larger than that at other meshing points， and the volume of the wear is zero at the pitch point. With the increase of the pressure angle， the wear volume decreases first and then increases. Uneven wear of the tooth surface reduced the meshing stiffness of the gear， and the meshing stiffness decreases with the increase of the wear volume. This method provides a theoretical basis for the dynamics modeling of gear system with tooth surface wear.关键词：Gear;Generating method;Mesh stiffness;Energy method;Wear
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发布时间：2022-11-10 - 摘要：Aiming at the application of parallel mechanism in flexible assembly and polishing， a new 6-DOF coupling parallel mechanism is designed. The mechanism branch chain is designed based on the spiral theory， and the branch chain mechanism is optimized for the purpose of improving the rigidity of the mechanism and reducing the motion inertia. The coupled parallel mechanism is decoupled and analyzed according to the fixed principle， and the kinematics and equivalent motion of the mechanism are obtained. The number of degrees of freedom of the mechanism is verified by the modified G-K formula. Finally， a prototype of the coupled parallel mechanism is fabricated， and a motion control experiment is carried out. The experimental results show that the mechanism configuration is reasonable and practical.关键词：Coupling;6-DOF;Parallel mechanism;Spiral theory;Configuration design
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发布时间：2022-11-10 - 摘要：A quadruped walking robot with a bionic horse configuration for equestrian-assisted treatment is presented. A single leg system of the robot is driven by a cam-linkage combination mechanism. On the basis of introducing the structure and working principle of the quadruped bionic horse robot， the kinematics modeling and analysis of the robot are carried out. The kinematics equations of each mechanism are established by loop vector method， and Newton iteration method is used to solve the nonlinear displacement equations. The Matlab is used to develop a unified program to solve the displacement， velocity and acceleration of the moving leg of the robot. By an example， the characteristics of the endpoint displacement and acceleration of the moving leg for the robot driven at the same speed are analyzed. The relevant research lays a foundation for the subsequent optimizing the performance of the robot.关键词：Quadruped robot;Bionic horse configuration;Cam-link combination mechanism;Kinematics modeling;Analysis
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发布时间：2022-11-10 - 摘要：The straight line conjugate tooth profile with small tooth difference is studied. The parametric equations of the straight line conjugate tooth profile are derived based on the gear meshing principle and the tooth profile normal method. The calculation method of the meshing line and coincidence degree and the backlash processing method is described. The principle of tooth profile interference verification is discussed， and a method of tooth profile interference verification based on area is proposed. A prototype of a reducer with small tooth difference straight line conjugate tooth profile as the main transmission structure is designed and manufactured， and the efficiency and temperature rise tests are conducted. The results can provide reference and reference for the research of the small tooth difference tooth straight line conjugate tooth profile in the field of transmission.关键词：Straight line conjugate with small tooth difference;Tooth profile equation;Interference analysis;Efficiency test;Temperature rise test
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发布时间：2022-11-10 - 摘要：Based on the ANSYS CFX fluid-structure interaction numerical calculation method， the lubrication performance and structure design of water-lubricated composite stern bearing are studied， the effects laws of different grooves， clearance ratios， length diameter ratio， and diameters on load carrying capacity， water film pressure， bearing deformation， minimum water film thickness and bearing friction coefficient are expounded. In addition， by using a water-lubricated bearing test rig， the effects of different water grooves on the starting friction torque， transition speed， and friction coefficient of the bearing are studied. The results show that the friction coefficient， maximum water film pressure， and maximum bearing deformation increase with the number of water grooves. The load carrying capacity and minimum water film thickness decrease with the increase of clearance ratio while increase with the increase of length diameter ratio. Finally， the variation of load carrying capacity with a diameter of 100~500 mm， length diameter ratio of 2~3， and clearance ratio of 0.1%~0.2% is summarized. A certain theoretical basis for the design of water-lubricated stern bearings is provided.关键词：Water-lubrication;Composite material;Journal bearing;Structure design;Fluid-structure interaction
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发布时间：2022-11-10 - 摘要：An analytical approach based on the simulation is proposed to quantify the time varying mesh stiffness （TVMS） of gear pair due to various gear tooth faults. Gear faults affecting transmission of gear pair are always accompanied by a stiffness reduction. TVMS is an important parameter in condition monitoring and description of dynamic characteristic of meshing gear pair. Potential energy method is one of the most widely used analytical methods to calculate TVMS. The potential energy method is used to study the influence of three fault conditions on the gear meshing stiffness， including cracked gear， broken tooth and tooth surface spalling. The results indicate that due to presence of gear faults， the TVMS reduces which affect the vibration response of spur gear pair.关键词：Gear fault;Time varying mesh stiffness （TVMS）;Spur gear pair
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发布时间：2022-11-10
Design· Calculation
- 摘要：In order to optimize the structure of the flexspline in the double-arc harmonic reducer， the three-dimensional model of the flexspline with double arc tooth profile is established by using the SoildWorks software， and the deformation of the flexspline by the wave generator under the assembly condition is simulated by using the finite element method and the contact model is established. According to the structural parameters of the flexspline， including the chamfer angle of the flexspline and the wall thickness of the thin-walled cylinder， the optimization is carried out， the change of the maximum equivalent stress on the teeth of the flexspline and the maximum equivalent stress of the thin-walled cylinder with the structural parameters of the flexspline are analyzed by the ANSYS Workbench. This study provides the basis for optimizing the structure design of the flexspline in the harmonic reducer， and provides the basic reference for the force distribution of the flexspline under no load and load.关键词：Harmonic drive;Double-arc flexspline;Stress analysis;Finite element analysis
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发布时间：2022-11-10 - 摘要：Due to the high-frequency torque characteristics of electric vehicle motors，the impact load of their effect on the fatigue life of transmission systems such as reducers and differentials has been paid more and more attention by enterprises. According to the actual torsion load of electric vehicle differential， a torsion fatigue test system of electric vehicle differential based on hydraulic servo is designed. A wireless telemetry system is used to collect the axle shaft torque of electric vehicle in Dianjiang test site according to Pascal test specification. After preprocessing the collected axle shaft torque load spectrum and analyzing the characteristics in time-frequency domain， it is determined that the load waveform of torsional fatigue test is sine wave and the load frequency is 0.5 Hz. Through rainflow counting and extrapolation， the loading amplitude and frequency are determined，thus a torsional fatigue test method for differential of electric vehicles is established. Finally，an electric vehicle differential torsion fatigue test system is set up to verify the test method. The results show that the fatigue failure parts and forms of the differential are consistent with those of the real vehicle，and the established method is effective and feasible.关键词：Electric vehicle differential;Torsional fatigue;Test;Loading
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发布时间：2022-11-10 - 摘要：Taking the universal coupling with spider of heavy-duty maintenance machinery as study object， the kinematics theory is used to analyze the performance of the universal coupling with spider when the input shaft rotates at a uniform speed， and the output shaft rotates periodically unevenly around the circumference. It quantitatively expressed the unevenness of the universal coupling with spider from the aspects of angular speed ratio， coefficient of unevenness and angular acceleration. The results indicate that， with the increase of the angle and rotational speed of the input / output shaft of universal coupling with spider， the maximum angular acceleration of the output shaft increases， so its maximum inertia moment increases. The angle between the input / output shaft of the universal coupling with spider is a key parameter that affects its unevenness. When the angle between the input / output shaft of the universal coupling with spider increases， the fluctuation of the output shaft rotation angle increases， so reducing the input / output shaft angle is the only way to improve the transmission efficiency of the universal coupling with spider.关键词：Transmission shaft;Heavy-duty maintenance machinery;Kinematics analysis;Coefficient of unevenness;Angular speed ratio;Matlab analysis;Universal coupling with spider
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发布时间：2022-11-10 - 摘要：Rolling bearings are important components of large machinery and play a very important role. When the bearing fails， if not repaired or replaced them in time， it will seriously affect the life of the equipment. Time-frequency analysis method is a very effective fault feature extraction tool， which has been widely used. Simultaneously， the energy concentration of time-frequency representation affects the effect of fault feature extraction， so a more concentrated time-frequency analysis method plays a vital role in mechanical signal processing and fault diagnosis. A novel time-frequency domain feature extraction method， synchrosqueezing extracting transform is proposed. This method mainly includes two steps， firstly， the majority of energy of the signal is collected into multiple small frequency bands by using a synchrosqueezing transform， which achieves the initial concentration and reduce the energy loss of the next step. Then， a frequency extracting operator is introduced into the results of the synchrosqueezing transform. This operator can extract the information that is most relevant to the time-varying characteristics of the signal in each small frequency band and retain it， which achieves the concentration again. The analysis of simulation signals verified the feasibility of the method. Finally， by analyzing the actual bearing signals， it is found that the proposed method is more effective than the previous time-frequency analysis methods.关键词：Synchrosqueezing transform;Synchrosqueezing extracting transform;Rolling bearing;Fault diagnosis
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发布时间：2022-11-10 - 摘要：Due to the machining and installation errors of herringbone gear transmission， the unsymmetrical arrangement of bearings and so on， it is inevitable that tiny axis non-parallelism will appear in gear transmission system. Herringbone gears have the characteristics of large tooth width， great meshing stiffness and line contact for standard involute tooth surface. However， the tiny axis non-parallelism will lead to serious eccentric load on tooth surface， and eccentric load affects the stability and reliability of gear transmission. Therefore， a bearing support structure with a great axial floating pinion is adopted， and loaded tooth contact analysis （LTCA） method for the herringbone gear system with the axial floating pinion is studied. Through the simulation comparison on two different bearing support structures， it is shown that the bearing support structure with the axial floating pinion can effectively decrease the eccentric load on the tooth surface. The conclusion provides a reference for the design of herringbone gear transmission systems.关键词：Herringbone gear;Non-parallelism;Eccentric load on tooth surface;Loaded tooth contact analysis
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发布时间：2022-11-10 - 摘要：The planetary mechanism of shearer cutting department operates in harsh environment， suffers heavy impact load and complicated internal lubrication. In order to calculate the dynamic characteristics of planetary mechanism more accurately， a Smoothed Particle Hydrodynamics （SPH） method based on Abaqus is put forward. Taking MG400/951WD shearer as the engineering object， the three-dimensional assembly model of shearer is established by three-dimensional modeling software Pro/E， which is imported into Adams for multi-body dynamics simulation and output load file. The fluid-solid coupling model of planetary mechanism is established in Abaqus， and the dynamic analysis of non-linear gear meshing is carried out by using explicit dynamics solver， which verifies that the oil meshless feature has natural advantages over traditional dynamic analysis method and can be widely used in the dynamic study of key structural parts of industrial and mining equipment.关键词：Planetary mechanism;Adams;Load;SPH;Flow-solid coupling;Dynamic characteristic
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发布时间：2022-11-10 - 摘要：Due to lack of temporary falling protection device，the power transmission tower climbing robot is needed to research and developto replace the first climbing personnel to guarantee their safety.According to actual working environment and its functional requirements，a climbing robot model based on bionic silkworm characteristics is proposed in combination with bionic principles.The structure of the robot is designed and the adsorptionstability in the climbing process is analyzed. The kinematic model of the robot is established and the working space is simulated to verify the rationality of the robot structure.The physical prototype is manufactured and the relevant climbing experiments are carried out，the experimental results showing that the robot can replace the personnel to climb the tower.关键词：Climbing robot;Structure design;Kinematics analysis;Experimental verification
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发布时间：2022-11-10
Test·Analysis
- 摘要：According to the production process requirements of specific products， a manipulator for the grasping and pressing down assembling of the workpiece with cylindrical inner wall using an inner bracing method is designed. For this manipulator， the finger system is flexibly connected with the tubular hand palm. The flexible connection forms a residual vibration of the finger system during high-speed operation. Based on introducing the design idea and structure of the manipulator， the Adams motion simulation is adopted for the manipulator system to analyze the effects of spring system parameters on the residual vibration of the finger system. The key parameter affecting the vibration characteristics of the manipulator-the parameter of connecting spring is optimized and selected. The actual operation results of the manipulator show that the structure and spring parameters of the manipulator can well meet the operation requirements of the specific object.关键词：Workpiece with cylindrical inner wall;Inner bracing method for grasping;Press down assembly;Manipulator structure;System vibration;Spring parameter
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发布时间：2022-11-10 - 摘要：Aiming at the problem of noise and vibration in the operation of gear mechanism， the vibration reduction characteristics of non-circular gear are studied. The influence of the deviation between the gear center and the center of the circle on the kinematics and oscillation characteristics is analyzed. The results show that a larger deviation will result in a smaller resonance amplitude due to the change in mesh frequency， and at the same time will lead to a higher additional dynamic load on the mechanism. The shape of the gear center is determined，which provides relatively small resonance amplitudes and minimal additional dynamic loads. A mechanical device that can cut slightly non-circular gears on a hobbing machine without numerical control machine is developed.关键词：Non-circular gear;Gear noise;Gear vibration;Resonance amplitude
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发布时间：2022-11-10 - 摘要：Aiming at the boundedness of wheel-legged type obstacle robot， a novel deformable wheel for wheel-legged obstacle crossing robot is designed to make the robot to switch between wheels and legs. The working principle of the wheel with variable structure is introduced. The mechanism executes wheeled mode on the flat road， and walks in wheel mode when encountering obstacles， it switches to a petals-type mode to cross obstacles. The process of straight-line moving， direction switching of the wheel in two modes is analyzed theoretically， and the kinematics simulation model is established. The kinematic simulation for the deploy progress is carried out in Adams to verify the theoretical analysis result. The simulation results show that the designed wheel structure possessed high capacity of obstacle climbing of the leg mechanism and stability of wheel mechanism， so the robot can adapt to a variety of complex road conditions.关键词：Wheel-legged type;Obstacle crossing robot;Deformable wheel
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发布时间：2022-11-10 - 摘要：In view of the problem complex structure and large volume of high-DOF dexterous hand， a compact， light-weight， direct-drive 8-DOF three-finger dexterous hand is designed. Through the use of micro motor and gear reducer， the joint drive mode is realized， the driving loss is reduced， and the driving force of finger is effectively improved. Aiming at the shortcomings of dexterous hand in dynamic grasping mode， the dynamic grasping algorithm of dexterous hand is studied through the fusion of embedded ultrasonic sensor， pressure sensor and angle sensor. A three-finger dexterous hand prototype is made by 3D printing， and the grasping experiment is carried out. Experiments show that the designed dexterous hand has a strong grasping ability， and through the multi-sensor fusion control algorithm， the dexterous hand can achieve accurate， safe and stable grasping of moving objects.关键词：Micro motor;Joint direct-drive;Fusion control algorithm;Dynamic grasping
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发布时间：2022-11-10 - 摘要：In order to improve the accuracy and effectiveness of the fault diagnosis of the bogie bearing of urban rail transit vehicle， taking the vehicle bogie bearing of Guiyang Metro Line 1 as the research object， the full life cycle fault diagnosis system of the bogie bearing is established by considering the running characteristics of continuous long and sloping route， and the bogie bearing fault diagnosis test platform is established. The research results indicate that the fault diagnosis method of the bogie bearing under the working condition of continuous long and sloping route can accurately extract the impact sample and impact trend curve of the bogie bearing. Under the working condition of continuous long and sloping route， the fault diagnosis system of the bogie bearing has good accuracy and stability， which can monitor the running characteristics of the bogie bearing in real time， and provide important information and technical support for the improvement of maintenance efficiency.关键词：Bogie;Bearing;Fault diagnosis;Continuous long and sloping route
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发布时间：2022-11-10
Development·Application
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