Influence mechanism of multi-coupling error on the load sharing characteristics of herringbone gear planetary transmission system

2019 ◽  
Vol 233 (4) ◽  
pp. 792-816
Author(s):  
Shuai Mo ◽  
Ting Zhang ◽  
Guoguang Jin ◽  
Zhanyong Feng ◽  
Jiabei Gong ◽  
...  
Keyword(s):  
Error Control ◽  
Load Sharing ◽  
Transmission Error ◽  
Transmission System ◽  
Main Role ◽  
Influence Mechanism ◽  
Planetary Transmission ◽  
Herringbone Gear ◽  
Assembly Error ◽  
Coupling Error

The load sharing characteristics of the herringbone planetary transmission system are a key indicator for evaluating the bearing stability and reliability of each planet gear in the transmission system. The value of the load sharing coefficient is closely related to the manufacturing error and the assembly error in gear processing and assembly process. Therefore, it is indispensable to study the influence mechanism of these errors on the load sharing characteristics of the transmission system. Nevertheless, researches on the multi-coupling transmission error to the load sharing characteristics of herringbone planetary transmission system did not receive enough attention, but much of the single errors. Based on the centralized parameters theory and the Lagrange method, this research establishes a dynamic model for herringbone planetary transmission system and creatively proposes a study of multi-coupling error which consists of eccentric error, tooth profile error, stagger angle and assembly error. This work shows that the changing regulation of the load sharing characteristics with any one of the above errors is different. However, the load sharing characteristics become worse with the increase of multi-coupling error, in which the eccentric error plays a main role. Therefore, the error control should focus on eccentric error.

scholarly journals Dynamic Characteristics and Load Sharing of Herringbone Wind Power Gearbox

2018 ◽  
Vol 2018 ◽  
pp. 1-24 ◽  
Author(s):  
Shuai Mo ◽  
Ting Zhang ◽  
Guoguang Jin ◽  
Zhanyong Feng ◽  
Jiabei Gong ◽  
...  
Keyword(s):  
Dynamic Characteristics ◽  
Planetary Gear ◽  
Load Sharing ◽  
Transmission System ◽  
Gear Transmission ◽  
Torsional Stiffness ◽  
Gear Transmission System ◽  
Herringbone Gear ◽  
Stagger Angle ◽  
The Impact

In this study, the dynamic model for the herringbone planetary gear transmission system is established by the lumped parameter method based on the system dynamics and the Lagrange equation, and the impact of the support stiffness and the torsional stiffness on dynamic characteristics is studied. The research results have a guiding significance for the design of the herringbone gear transmission system. In this model, the herringbone gear is treated as a special gear coupled by 2 opposite helical gears, where the stagger angle, comprehensive meshing error, support stiffness, support damping, and load inertia are considered in the analysis of dynamics. Moreover, the dynamic characteristic of the carrier is considered as well. By calculating the meshing force curve of the transmission system, the impact of the stagger angle, supporting stiffness, and the torsional stiffness on meshing force and load sharing coefficient is analyzed. The results show that the stagger angle has an obvious impact on load sharing coefficient while it has little impact on maximum meshing force. And the support stiffness has a more obvious impact on the dynamic characteristics of the system. The recommendary support stiffness of the system is that all of the support stiffness of the sun gear, planetary gear, ring gear, and carrier is 107 N/m. The torsional stiffness has little impact on the dynamic characteristics of transmission system, except the torsional stiffness of planetary gear, and carrier has an obvious impact on load sharing coefficient. The commercial software ADAMS carried out dynamics analysis of the transmission system to verify the necessity validity of the theoretical analysis.

Analytical investigation on load-sharing characteristics for multi-power face gear split flow system

2019 ◽  
Vol 234 (2) ◽  
pp. 676-692 ◽  
Author(s):  
Shuai Mo ◽  
Zongxiang Yue ◽  
Zhiyou Feng ◽  
Lijuan Shi ◽  
Zhenxing Zou ◽  
...  
Keyword(s):  
Flow System ◽  
Load Sharing ◽  
Analytical Investigation ◽  
Input Power ◽  
Transmission System ◽  
Parameter Method ◽  
Spur Gears ◽  
Face Gear ◽  
Split Flow ◽  
Assembly Error

The multi-power face gear split flow system is a new type of transmission system, which has the advantages of stable and reliable transmission and strong carrying capacity. And it has great potential in the application of helicopter transmission systems. In this paper, the multi-power face gear split flow system was taken as the research object. Based on the lumped parameter method and Newton’s second law, the translational-torsional dynamic model of the system was established considering the translational vibration and the torsional vibration of the gears, and the meshing force curves and load-sharing coefficient curves were drawn. At the same time, the factors affecting the load-sharing characteristics of the transmission system were studied. The impacts of manufacturing errors, assembly errors, manufacturing error phases, assembly error phases, meshing damping, support stiffness, and the input power on the load-sharing coefficients were analyzed. The research shows that the errors and error phases of spur gears have small impacts on the load-sharing coefficients, while the support stiffness of spur gears has a great impact on the load-sharing coefficients. The errors and error phases of face gears have small impacts on the load-sharing coefficients, while the support stiffness of spur gears has a great impact on the load-sharing coefficients. The load-sharing coefficients increase constantly with the increase in the meshing damping between face gears and spur gears, whereas the load-sharing coefficients decrease constantly with the increase in the input power.

Analysis of Split Torque Transmission System Load Sharing

2012 ◽  
Vol 246-247 ◽  
pp. 78-83
Author(s):  
Rui Feng Wang ◽  
Ning Zhao ◽  
Qing Jian Jia ◽  
Li Tao
Keyword(s):  
Gear Tooth ◽  
Load Sharing ◽  
Transmission System ◽  
Variable Step Size ◽  
Step Size ◽  
Runge Kutta Method ◽  
Torque Transmission ◽  
Fifth Order ◽  
Assembly Error ◽  
Split Torque

A calculative model for parallel shaft split torque transmission system is presented, the model includes stiffness of shaft supporting, time-varying stiffness, damping, gear eccentric error errors, bearing eccentric errors, gear tooth thickness error, assembly error. Dynamic analytic model is built using the theory of equivalent mesh error and Newton method. The model was solved by variable step size forth/fifth-order Runge-Kutta method. The result shown all error affect load sharing in different way, one error deduced sharply can not improve load sharing obviously.

Meshing impact analysis of planetary transmission system considering the influence of multiple errors and its effect on the load sharing and dynamic load factor characteristics of the system

2021 ◽  
Vol 235 (1) ◽  
pp. 57-74
Author(s):  
Shengyang Hu ◽  
Zongde Fang ◽  
Yingqiang Xu ◽  
Yabin Guan ◽  
Rui Shen
Keyword(s):  
Dynamic Load ◽  
Impact Force ◽  
Load Sharing ◽  
Transmission System ◽  
Tooth Surface ◽  
Load Factor ◽  
Impact Point ◽  
Gear Transmission System ◽  
Planetary Transmission ◽  
Dynamic Load Factor

The meshing impact on transmission system and internal meshing gear pair and its impact on the load sharing and dynamic characteristics of the system are not well understood yet. In this paper, the meshing impact models of internal gear pairs and planetary transmission system were successfully constructed, and the meshing impact point, meshing impact time and meshing impact force were accurately obtained. Meshing impact in gear transmission system is obviously affected by eccentricity error, installation error, and other errors. Due to the difference in error of each component, the internal and external gears of each branch lead to different meshing positions, which causes the constant change in meshing impact point, meshing impact time and meshing impact force. This creates difficulties in the analysis of meshing impact characteristics of gear transmission system. Load Tooth Contact Analysis (LTCA) method can be used to accurately analyse the change in position of gear tooth under load condition. Through the dynamic model of planetary transmission system, the influence in component errors on the contact position of tooth surface is obtained. Combining the loaded transmission error of the tooth surface under load and the geometric transmission errors under the influence of component errors, the model of meshing impact for accurately solving the system is deduced, and the influence of meshing impact on the system's load sharing coefficient and dynamic load factor coefficient is analysed. By comparing the planetary transmission system before and after considering the meshing impact of the system, it is found that the system's load-sharing coefficient increases slightly, dynamic load factor coefficient fluctuates significantly, and meshing force becomes more clutter after considering meshing impact.

Planet position errors in planetary transmission: Effect on load sharing and transmission error

2013 ◽  
Vol 8 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Miguel Iglesias ◽  
Alfonso Fernández ◽  
Ana De-Juan ◽  
Ramón Sancibrián ◽  
Pablo García
Keyword(s):  
Load Sharing ◽  
Transmission Error ◽  
Position Errors ◽  
Transmission Effect ◽  
Planetary Transmission

A study on load-sharing structure of multi-stage planetary transmission system

2015 ◽  
Vol 29 (4) ◽  
pp. 1501-1511 ◽  
Author(s):  
Wei Sun ◽  
Xiang Li ◽  
Jing Wei ◽  
Aiqiang Zhang ◽  
Xin Ding ◽  
...  
Keyword(s):  
Load Sharing ◽  
Transmission System ◽  
Multi Stage ◽  
Planetary Transmission

Effect Analysis of Polarization Aberration in the Non-Line-of-Sight Azimuth Transmission

2021 ◽  
Author(s):  
Zhiyong Yang ◽  
Junchen Song ◽  
Wei Cai ◽  
Danqiu Qiao ◽  
Gaoxiang Lu
Keyword(s):  
Normal Incidence ◽  
Transmission Error ◽  
Transmission System ◽  
Line Of Sight ◽  
Polarization Angle ◽  
Effect Analysis ◽  
Polarized Beam ◽  
Polarization Maintaining ◽  
Selection Of ◽  
Non Line Of Sight

Abstract Focusing on the problem that the polarization aberration caused by the non-normal incidence of the polarized beam affects the accuracy of the azimuth transmission during the fiber coupling process of the non-line-of-sight azimuth transmission system, this paper starts from the principle of non-line-of-sightazimuth transmission. The polarization aberration relation of the lens-fiber combined interface is established based on the Fresnel formulafor the attenuation difference between the horizontal and vertical electric vectors. Further, the azimuth solution model affected by polarization aberration is established. Numerical simulation results show that in non-normal incidence, no polarization aberration will occur when the polarization angle between the incident ray and incident surface is 0° or 90°. Otherwise, the polarization aberration changes toward the incident surface, and the azimuth transmission error will increase with the increase of the polarization aberration. Last, the optimization measures are proposed. This is of great significancefor further improvement of the azimuth transmission system based on polarization-maintaining fibers, the selection of the instrument,and the improvement of the system measurement accuracy.

scholarly journals Study of the Transmission Error Prediction of a Five-speed Manual Transmission System

2016 ◽  
Vol 15 (2) ◽  
pp. 66-71 ◽  
Author(s):  
Sang-Pil Cho ◽  
Dong-Gyu Lee ◽  
Lae-Sung Kim ◽  
Zhe-zhu Xu ◽  
Sung-ki Lyu
Keyword(s):  
Transmission Error ◽  
Transmission System ◽  
Manual Transmission ◽  
Error Prediction
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