Dynamic Analysis and Study on Shaft's Torsional Vibration of Electrical Traction Shearer's Motor-Rocker and Deceleration System

Gao, Hongbin; Sun, Ning; Zhang, Ru-Qi; Ma, Yuan; Jia, Zhi-Bin

doi:10.1109/icicta.2009.481

Cited by 3 publications

(2 citation statements)

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“…In the actual application process, the motor shaft may vibrate irregularly, due to irresistible factors such as unreasonable design, load change, external interference, etc., [18], [19]. For the purposes of this paper, the vibration process is simplified to different offsets of the motor shaft at multiple fixed times.…”

Section: Vibration Analysis and Structure A Vibration Analysis Omentioning

confidence: 99%

Coaxial Nested Couplers-Based Offset-Tolerance Rotary Wireless Power Transfer Systems for Electric Excitation Motors

Wang

Nie

et al. 2020

IEEE Access

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In order to improve poor anti-offset capability of rotary transformer in electric excitation motor, a coaxial nested rotary wireless power transfer (CNR-WPT) system has been proposed in this paper. Firstly, considering the spatial geometric relationship of the coils and the power transmission efficiency of the CNR-WPT, the preliminary coil structure has been proposed. Secondly, through theoretical derivation, the specific relationship between the mutual inductance of the coils and the offset have been studied to verify the feasibility of the preliminary design. Thirdly, aiming at the problem that the CNR-WPT is susceptible to steel interference, the magnetic field has been optimized by adding ferrite and introducing a protective casing in this paper. Finally, an experimental platform for CNR-WPT system has been built. The experimental results verify that the power transmission efficiency of the CNR-WPT system can reach 90% when the radial offset and axial offset are below 5 mm, and the angular offset is below 5 •. The energy losses can be reduced by adding ferrite and protecting the casing. The CNR-WPT system thereof can also be applied to other rotary power transmission occasions. INDEX TERMS Electric excitation motor, coaxial nested rotary wireless power transfer system, anti-offset capability, power transmission efficiency.

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Section: Vibration Analysis and Structure A Vibration Analysis Omentioning

confidence: 99%

Coaxial Nested Couplers-Based Offset-Tolerance Rotary Wireless Power Transfer Systems for Electric Excitation Motors

Wang

Nie

et al. 2020

IEEE Access

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“…The existing research contents of shearer mainly include: Gao [1] analyzed the torsional vibration transmission process of the shearer drive shaft, theoretically derived the torsional vibration equation of the shaft. Si [2] made use of the vibration characteristics of ranging arm, proposed a diagnosis method of shearer cutting state based on PNN and FOA.…”

Section: Introductionmentioning

confidence: 99%

Thermal Characteristic on Ranging Arm Shell of Drum Shearer

Song¹,

Yun²,

Shi³

et al. 2019

Proceedings of the 2019 2nd International Conference on Mathematics, Modeling and Simulation Technologies and Applications (MMS

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Aiming at the problem of shear damage of shearer ranging arm caused by thermal load and force load, the ranging arm shell of the drum shearer is taken as research object, the mechanical properties, temperature field distribution and thermal characteristics of the ranging arm shell are carried out. Based on the theory of heat transfer, the heat generation and heat dissipation of the ranging arm are analyzed, the heat balance analysis of the ranging arm shell is built, and the heat balance temperature at different environment temperatures is calculated. The thermal analysis and thermal structure coupling analysis of the arm shell are carried out, and the stress and deformation distribution of the ranging arm shell are obtained. The results shows that the maximum stress and maximum deformation of the ranging shell are greatly increased under the thermal balance temperature. The correctness of the thermal analysis method is verified by the loading experiment.

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Method of Coal-Rock Boundary Recognition Based on Modal Analysis

Zhao

2014

AMM

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Coal rock boundary recognition is one of the core techniques to realize the automation of the fully mechanized coal face, however, this kind of technique has not been effectively resolved. We put forward a kind of coal-rock boundary recognition method based on the modal analysis, and through the theory analysis, we put forward the key parameters and recognition method for the coal rock boundary recognition. By using this method weve analyzed the vibration data from underground working face. The analyzing result indicates that this method could efficiently recognize the coal-rock boundary, which has provided a new and easily realizable method for coal-rock boundary recognition problem.

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Dynamic Analysis and Study on Shaft's Torsional Vibration of Electrical Traction Shearer's Motor-Rocker and Deceleration System

Cited by 3 publications

References 0 publications

Coaxial Nested Couplers-Based Offset-Tolerance Rotary Wireless Power Transfer Systems for Electric Excitation Motors

Coaxial Nested Couplers-Based Offset-Tolerance Rotary Wireless Power Transfer Systems for Electric Excitation Motors

Thermal Characteristic on Ranging Arm Shell of Drum Shearer

Method of Coal-Rock Boundary Recognition Based on Modal Analysis

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