Optimization Design of Planetary Gear Transmission Mechanism of Traction Unit

2013 ◽  
Vol 774-776 ◽  
pp. 164-167
Author(s):  
Li Li
Keyword(s):  
Mathematical Model ◽  
Optimization Design ◽  
Planetary Gear ◽  
Gear Transmission ◽  
Transmission Mechanism ◽  
Mining Machine ◽  
Mechanical Transmission ◽  
Gear Teeth ◽  
Design Variables ◽  
Traction Unit

In order to make the coal mining machine adapt the narrow work space underground, and the height of shearer is decided by the planetary gear transmission mechanism of traction unit. In this paper, the volume of planetary gear transmission mechanism is selected as objective function, and module of gear, teeth of sun gear, width of gear are considered as design variables based on mechanical transmission theory, and the optimized mathematical model of the planetary gear transmission mechanism of traction unit is established. The optimized mathematical model is solved by SQP(sequential quadratic programming) basd on Matlab program, the volume of planetary gear transmission mechanism reduces 20.22%, and the height of shearer decreases 11.3%.

The Optimization Design on Transmission Mechanism of Tightening Machine

2014 ◽  
Vol 621 ◽  
pp. 227-232
Author(s):  
Quan Ying Sun ◽  
Yi Li Wang ◽  
Xiu Li Meng ◽  
Xiao Dong Yu
Keyword(s):  
Mathematical Model ◽  
Objective Function ◽  
Optimization Design ◽  
Optimal Solution ◽  
Planetary Gear ◽  
Transmission Mechanism ◽  
Minimum Volume ◽  
Sqp Method ◽  
Design Variables

This article, to optimize the transmission mechanism of tightening machine, select the involute planetary gear with two teeth differences a research object, determine the design variables about modification coefficient, modulus and tooth thickness, based on the target of having the minimum volume, a mathematical model of optimization was established, the optimal solution of the objective function is obtained by using the SQP method on fmincon function of optimization toolbox of Matlab. The results showed, the volume of pinion decreased 15% after optimizated, the volume of the corresponding gear will also greatly reduced, achieved the optimization goal.

Design for NGW Type Planetary Gear Transmission

2012 ◽  
Vol 479-481 ◽  
pp. 876-879
Author(s):  
Xian Zhi Li ◽  
Bao Lin Yin ◽  
Chun Shan Liu ◽  
Si Yu Chen
Keyword(s):  
Computer Program ◽  
Optimization Model ◽  
Optimization Design ◽  
Planetary Gear ◽  
Gear Transmission ◽  
Transmission Mechanism ◽  
Design Parameters ◽  
Boundary Constraint ◽  
And Mathematics ◽  
Drawing Program

This article analyzes the NGW type planetary gear transmission mechanism and structure, establishes boundary constraint conditions and mathematics optimization model in view of the smallest volume's project objective. It can realize the NGW type planetary gear transmission optimization design through compiling corresponding computer program, obtain the optimization design parameters. In optimization design's foundation, it applies the CAD technology to establish drawing program, realizes the parametric drawing.

Optimization Research on Dynamic Balance of Spatial Engine under Limiting Shaking Moment

2009 ◽  
Vol 626-627 ◽  
pp. 693-698
Author(s):  
Yong Yong Zhu ◽  
S.Y. Gao
Keyword(s):  
Mathematical Model ◽  
Objective Function ◽  
Kinetic Analysis ◽  
Optimization Design ◽  
Design Method ◽  
Dynamic Balance ◽  
Optimized Design ◽  
Design Variables ◽  
The Mathematical Model ◽  
Shaking Moment

Dynamic balance of the spatial engine is researched. By considering the special wobble-plate engine as the model of spatial RRSSC linkages, design variables on the engine structure are confirmed based on the configuration characters and kinetic analysis of wobble-plate engine. In order to control the vibration of the engine frame and to decrease noise caused by the spatial engine, objective function is choosed as the dimensionless combinations of the various shaking forces and moments, the restriction condition of which presents limiting the percent of shaking moment. Then the optimization design is investigated by the mathematical model for dynamic balance. By use of the optimization design method to a type of wobble-plate engine, the optimization process as an example is demonstrated, it shows that the optimized design method benefits to control vibration and noise on the engines and improve the performance practically and theoretically.

Design of Balance Control Mechanism of Nitriding Layer Depth in Ion Nitriding

2011 ◽  
Vol 697-698 ◽  
pp. 445-449
Author(s):  
Lian Jie Ma ◽  
M. Sun ◽  
Ya Dong Gong
Keyword(s):  
Balance Control ◽  
Planetary Gear ◽  
Mechanical Transmission ◽  
Ion Nitriding ◽  
Workpiece Surface ◽  
Gear Teeth ◽  
Large Size ◽  
Planetary Gear System ◽  
Outside Diameter ◽  
Nitriding Rate

Through design of balancing movement controller of large size workpiece for applying to LDMC-100 type ion nitriding furnace, the structure and principle of mechanism were introduced, the balance of mechanical transmission and influencing to nitriding layer of workpiece surface were analysed. In this mechanism, the planetary gear system was adopted, the single axis was adopted in this supporting mechanism, and the electric and insulating on workpieces were used. The balancing influencing of movement and techniques parameters for nitriding layer were discussed. The results indicate, the nitriding period is related with input speed and number of driven gear teeth. The re-nitriding rate and blank nitriding rate are related with gear modulus, workpiece outside diameter, number of drive and driven gear teeth. When the mechanism structure parameter is fixed, the effect of nitriding was completed by changing speed of input axis.

Fuzzy Reliablity Optimization Design of Two Stage Planetary Gear System by Genetic Algorithm Based on Predatory Search Strategy

2011 ◽  
Vol 403-408 ◽  
pp. 743-747 ◽  
Author(s):  
Chun Guang Wang
Keyword(s):  
Genetic Algorithm ◽  
Mathematical Model ◽  
Reliability Analysis ◽  
Optimization Design ◽  
Search Strategy ◽  
Planetary Gear ◽  
Transmission Efficiency ◽  
Fuzzy Reliability ◽  
Two Stage ◽  
Planetary Gear Sets

Fuzzy reliability analysis is regared as the theoretical basis. It takes the minimum volume and the maximum transmission efficiency as objective function．Then the mathematical model of fuzzy reliability optimal design on two stage planetary gear sets is set up. Genetic algorithm based on predatory search strategy is used to solve the fuzzy reliability mathematical model. Examples of calculation shows that the volume is decrease by 15%. The results imply the fuzzy reliability analysis is more scientific and reasonable in designing two stage planetary gear sets by using fuzzy reliability analysis.

Novel Gear Transmission Mechanism With Twice Unequal Amplitude Transmission Ratio

2019 ◽  
Vol 141 (9) ◽  
Author(s):  
Gaohong Yu ◽  
Zhipeng Tong ◽  
Liang Sun ◽  
Junhua Tong ◽  
Xiong Zhao
Keyword(s):  
Structural Characteristics ◽  
Angular Displacement ◽  
Planetary Gear ◽  
Gear Transmission ◽  
Transmission Mechanism ◽  
Gear Train ◽  
Transmission Ratio ◽  
Gear Pair ◽  
Pitch Curve ◽  
Gear Rack

The operation effectiveness of multi-bar transplanting mechanisms is low, and the specific changing law of the transmission ratio (the curve of the transmission ratio has twice unequal amplitude [TUA] fluctuation.), which is needed in vegetable pot seedling transplanting, is difficult to fulfill using a planetary gear train with noncircular gears and a single-planet carrier. To address this problem, we propose a noncircular gear pair that comprises an incomplete noncircular gear, rack, partial noncircular gear, and elliptical gear. The structural characteristics and the working principle of the TUA gear pair were analyzed. The pitch curve equation of the noncircular TUA gears was derived from the relationship of the angular displacement of the corresponding pitch curves. The influence of central angle α and eccentricity k on the shape of the pitch curve, angular displacement, and transmission ratio of the TUA gear pair was analyzed. The TUA gear pair was applied to a proposed vegetable seedling pickup mechanism (SPM) considering the design requirements. Finally, the feasibility of the new noncircular TUA gear transmission mechanism was verified by an SPM test.

A Myoelectric Controlled Prosthetic Hand Modelling and its Transmission Mechanism Dynamic Load Based on a Two-Stage Planetary Gear Transmission

2013 ◽  
Vol 658 ◽  
pp. 298-304
Author(s):  
Ren Ping Shao ◽  
Jing Li ◽  
Xin Na Huang ◽  
Li Qun Chen
Keyword(s):  
Dynamic Load ◽  
Longitudinal Vibration ◽  
Planetary Gear ◽  
Transmission Efficiency ◽  
Gear Transmission ◽  
Transmission Mechanism ◽  
Prosthetic Hand ◽  
Analysis Model ◽  
Transmission Scheme ◽  
Meshing Stiffness

A new transmission scheme for the myoelectric prosthetic hand is proposed and establishes its 3D parametric model. In order to improve the transmission efficiency and reduce vibration、noise and shock in the situation of the smallest volume. Meanwhile considering the time-varying meshing stiffness of gear pair, lateral vibration, longitudinal vibration and the vibration along the meshing line direction of sun gear and planetary gear, the dynamic analysis model of dual output planetary gear transmission mechanism for the myoelectric prosthetic hand is established. By analyzing the dynamic model, the dynamic characteristics, dynamic response and dynamic load of system are obtained, which lays a foundation for dynamic design of the myoelectric prosthetic hand further.

scholarly journals Development of a mathematical model of dynamic characteristics of a drive with a planetary mechanism

2021 ◽  
Vol 258 ◽  
pp. 08022
Author(s):  
Erkin Nematov ◽  
Mukhiddin Khudjaev ◽  
Botir Khasanov
Keyword(s):  
Mathematical Model ◽  
Dynamic Characteristics ◽  
Electric Motor ◽  
Equations Of Motion ◽  
Planetary Gear ◽  
Gear Teeth ◽  
Mechanism Research ◽  
Gear Mechanism ◽  
The Moment ◽  
Planetary Gear Mechanism

The article is devoted to the development of a mathematical model of dynamic characteristics of a drive with a planetary gear mechanism. The subject of research is a drive with a planetary gear mechanism. The following issues were considered in the article: the synthesis of a planetary gear mechanism; the development of a mathematical model that describes the dynamic characteristics of the system; the determination of the dynamic characteristics of a drive with a planetary gear mechanism. Research is based on the method of determining the number of gear teeth; the method of determining the kinetic energy of the James gearbox; the method of determining the dynamic characteristics of an electric motor. The possible number of satellites is given in the article; the pitch radii of the wheels for a given modulus are defined; the moment of inertia of the mechanism reduced to the movable central wheel is determined; a mathematical model of the motion of a drive with a planetary gear mechanism is developed. Equations of motion of a drive with a planetary gear mechanism were obtained. Assuming, in a particular case, all the links of the drive with the planetary gear mechanism as rigid links, a mathematical model was developed for this system, considering the dynamic characteristics of an electric motor. A mathematical model was developed that describes the dynamic characteristics of the system. Analytical solutions for the developed mathematical model are given.

Optimization Design for Planet Carrier of Planetary Gear Reducer Based on ANSYS

2010 ◽  
Vol 139-141 ◽  
pp. 1196-1201 ◽  
Author(s):  
Si Zhu Zhou ◽  
Chao Li ◽  
Tai Xing ◽  
Chun Bao Li
Keyword(s):  
Optimization Design ◽  
Design Method ◽  
Planetary Gear ◽  
Structural Deformation ◽  
Manufacturing Cost ◽  
State Variables ◽  
Design Variables ◽  
Inner Radius ◽  
Panel Thickness ◽  
Planet Carrier

On the basis of analyzing the structure of planetary gear reducer, this paper points out that it’s necessary to make use of optimization design method to improve the design level of the planetary gear reducer. The optimization model of planet carrier is established and the process of optimization design is studied. Taking the XJB80 single arm planet carrier as an example, whose optimization design is performed by using ANSYS software. The spacing of connecting panel, thickness of sidewall, the inner radius of the connecting panel and some other parameters are selected as design variables, the yield strength and structural deformation limitation of planet carrier material are selected as state variables and the total volume is selected as objective function. The optimal structure size of the planet carrier is obtained, result shows that the corresponding volume is reduced by 21%, thus the manufacturing cost can be reduced. The study result has already been used by planetary gear reducer enterprise.

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