Condition monitoring of urban rail transit by local energy harvesting by Mingyuan Gao, Yunwu Li, Jun Lu, Yifeng Wang, Ping Wang, Li Wang

“…The goal of this study is to develop a vibration-based electromagnetic energy harvesting prototype that provides power to rail-side monitoring equipment and sensors by collecting wheel-rail vibration energy when the train travels. …”
Get full text

FAULT DIAGNOSIS OF PLANETARY GEAR BOX BASED ON SENSITIVE TRANSIERT IMPACT FEATURE EXTRACTION AND HIERARCHICAL EXTREME LEARNING MACHINE by QIN Bo, YIN Heng, WANG Zhuo, ZHAO WenJun, MA Tao, WANG JianGuo

“…Put forward a state identification method for a planetary gearbox solar wheel for how to capture sensitive transient impact feature in the vibration signal and construct a high-dimensional eigenvector set and improve the fault classification accuracy of the extreme learning machine. …”
Get full text

Analysis and Synthesis of Outside Geneva Combined Mechanism with Uniform Movement by Zhou Hongying, Han Jiguang

“…The kinematic characteristics of the ordinary geneva wheel mechanism are determined by the numbers of sheave groove. …”
Get full text

Research of the Two-stage Planetary Level Parallel Axis Structure of Wind Power Gearbox Assembly Technology by Zou Junwei, Huang Junqiong, You Jing

“…Wind power gearbox assembly process quality has a decisive influence on the wind power gearbox assembly quality,it has important significance for improving the reliability of wind power gearbox.Aiming at the three assembly process difficulties problems of the two-stage planetary level parallel axis structure of wind power gearbox about planetary wheel,planet wheel axial momentum assurance and the measurement,body up and down box after box,surface level degree guarantee.Firstly,the deeply analysis planetary gear assembly parts matching relationship,the principle of bearing axial clearance control,the structure of rear housing,and then,the solution is put forward.Finally,the process scheme is verified.…”
Get full text

Stress Analysis of the Flexspline with Double- circular- arc Tooth Profile and Variable Structure by Zhang Yushuang, Wang Jiaxu, Wang Zhengwei, Pu Wei, Li Junyang, Zhou Guangwu

“…And the variation condition of the flexspline stress with the size of gear tooth fillet radius and the cut into the depth of arc of e flexible wheel smooth cylindrical outer surface is analyzed.…”
Get full text

Motor Learning Deficits in a Neonatal Mouse Model of Hypoxic-Ischemic Injury by Maria Marlicz, Weronika Matysik, Emily Zucker, Sarah Lee, Hannah Mulhern, Jennifer Burnsed

“…During the simple running wheel task, we observed no difference in wheel rotation and speed between groups (n = 5/group; day 1, <i>p</i> = 0.67; day 4, <i>p</i> = 0.53). …”
Get full text

DETERMINATION OF MACHINING PARAMETERS OF COLD ROLL-BEATING SPLINE SURFACE ROUGHNESS by LIU DongYa, WANG XiaoQiang, LIU Fei, CUI FengKui, ZHU QiPing, LIU ZhiFei

“…The results show: The rotational speed of the rolling wheel is 976 r/min ～ 2936 r/min,and the workpiece feed rate is in the range of 7 mm/min ～ 56 mm/min,with the gradual increase of the rotational speed of the rolling wheel and the feed rate of the workpiece,the surface roughness shows a trend of decreasing first and then increasing. …”
Get full text

Design on a Composite Mobile System for Exploration Robot by Weiyan Shang, Canjun Yang, Yunping Liu, Junming Wang

“…By analyzing the characteristics of typical moving systems, a new mobile system which is named wheel-tracked moving system (WTMS) has been presented. …”
Get full text

An Airfield Soil Pavement Design Method Based on Rut Depth and Cumulative Fatigue by Duoyao Zhang, Liangcai Cai, Shaohui Zhou

“…Moreover, in view of the lack of aircraft wheel trajectory distribution data, an approximate method for calculating the wheel trajectory distribution considering the side slip distance of the aircraft was proposed and the equivalent width of the wheel tread was calculated by introducing the modulus ratio. …”
Get full text

Precision Compensation Method of Tooth Profile in Form Grinding of Modified Helical Gears by Zhang Hao, Su Jianxin, Deng Xiaozhong, Han Zhengyang

“…The coordinate equation of helical gear tooth profile modification and geometric algorithm of form grinding wheel dressing are established, and the section profile of grinding wheel after tooth profile modification is optimized. …”
Get full text

Analysis of the Characteristic of Meshing Impact Load for Constrained Conveyor Chain with Long Pitch by Li Shujing, Shang Peng, Li Shoudong, Cui Zengyao, Liang Yanshu, Hong Lin

“…The model is divided into two parts: chain wheel and top edge. The kinematics models of the two parts are established based on the Lagrange equation to calculate the generalized moment. …”
Get full text

Trajectory Tracking Control System of Robot based on Slip Dynamics Model by Yin Hesheng, Zhang Qiuju, Ning Meng

“…The kinematics model and dynamics model for omni-directional mobile robots are built. By analyzing the wheel contact friction forces both in the wheel hub rolling direction and in the roller rolling direction,an amendatory dynamics model is presented. …”
Get full text

Simulation of Quadruple-arc Gear Form Grinding Machining based on VERICUT by Ren Zhongyi, Zhao Yi, Duan Jianzhong

“…Firstly,according to the NC gear grinding machine,the machine tool model,gear blank model is set up and on the basis of the quadruple- arc tooth profile gear form grinding wheel cross- sectional shape,grinding wheel model is established,with reference to the machine tool structure and form grinding motion,NC simulation program is written. …”
Get full text

Research of High Precision Harmonic Drive with Short Flexspline of Heliostat in Solar Thermal Power by Guanghui Yin, Lü Hongzhan

“…The results show that the transmission precision can meet the requirements of the heliostat and the flexible wheel and the output rigid wheel have the greatest influence on the transmission precision. …”
Get full text

Analysis of Planetary Closed Differential Motion in RV Reducer by Zhong Feng, Huaping Chen, Guanhua Feng, Xiaogang Liu, Jianjun Liu

“…The evolution process of RV reducer from one tooth differential cycloid needle wheel reducer is analyzed，the concept that the crank shaft is a negative 1 tooth sun wheel in a tooth differential meshing drive is proposed and the transmission ratio equivalent calculation is carried out. …”
Get full text

Influence of Eccentricity on the Forming Grinding of Cycloidal Gear and Its Compensation by Minghui Zhang, Xiaozhong Deng, Jianxin Su

“…The eccentric installation and grinding test of the cycloid wheel is verified by the domestic YK7350B CNC cycloid gear forming and grinding machine， which shows that the compensation method can effectively improve the forming and grinding accuracy of the cycloid wheel and reduce the cutting marks on the tooth surface.…”
Get full text

Carbody sway behaviour of railway vehicles due to track irregularity from rail alternate side wear by Lai Wei, Jing Zeng, Ren Luo, Feng Gan, Jijun Gong, Jun Jiang

“…The creep forces acting on the wheel and rail are preliminarily discussed to study the influence of the carbody sway on the wear of the wheel flange and the rail corner. …”
Get full text

Modeling and Simulation of Process-Machine Interaction in Grinding of Cemented Carbide Indexable Inserts by Wei Feng, Bin Yao, BinQiang Chen, DongSheng Zhang, XiangLei Zhang, ZhiHuang Shen

“…Then, a wheel-spindle model is simulated by means of the finite element method to represent the machine structure. …”
Get full text

High-Temperature Rutting Resistance of Inverted Asphalt Pavement Structure by Yingjun Jiang, Yu Zhang, Changqing Deng, Yong Yi, Tian Tian, Kejia Yuan

“…The results show that, compared with the traditional asphalt pavement structure (TAPS), 4 cm AC-13 mixture + 6 cm AC-20 mixture + 8 cm AC-25 mixture + 54 cm cement-stabilized macadam, the maximum shear stress of the IAPS can be reduced by ∼1.7% along with improvements in rutting resistance by ∼16% and ∼12% under wheel loads of 0.7 and 1.2 MPa, respectively. Wheel-load increase affects the rutting resistance of both structures in a similar manner: when the wheel load increases from 0.7 MPa to 1.2 MPa, the rut depths of both pavement structures increase by at least 63%. …”
Get full text

Mode Competition Phenomena and Impact of the Initial Conditions in Nonlinear Vibrations Leading to Railway Curve Squeal by Jacobo Arango Montoya, Olivier Chiello, Jean-Jacques Sinou, Rita Tufano

“…Curve squeal is a highly disturbing tonal noise produced by railway vehicles on tight curves, primarily attributed to lateral sliding at the wheel–rail interface. An essential step to estimate curve squeal noise levels is to determine the nonlinear self-sustained vibrations, for which time integration is a commonly used method. …”
Get full text