Performance Analysis of a Hybrid Power Cutting System for Roadheader

Yang, Yang; Li, Guowei; Yuan, Aihui

doi:10.1155/2017/1359592

“…Deviation signal v controls the current I of valve through correction, amplification and other links. Current controls the opening size and direction of the electro-hydraulic servo valve to control the cantilever swing of the roadheader [27,28].…”

Section: Adaptive Control Simulation Of Roadheadermentioning

confidence: 99%

Adaptive Cutting Control for Roadheaders Based on Performance Optimization

Liu

¹

,

Lu

²

,

Liu

³

et al. 2021

View full text Add to dashboard Cite

Aiming at addressing the problems of high specific energy consumption for cutting and slow response to the change of hardness in the control of existing mining roadheaders, an adaptive variable speed cutting control method based on cutting performance optimization is proposed by analyzing the working principle of roadheaders. Firstly, cylinder pressure and motor current are invoked as the criteria to judge load changes. Particle swarm optimization is utilized to optimize the cutting parameters under different impedance. Then, the relation between cutting speed, motor current and cylinder pressure is established by using fuzzy neural network to train cutting parameters and identification parameters under different conditions. Finally, the vector control of motor and electro-hydraulic servo valve is used to control the cutting speed. The results show that the cutting unit can adapt to different load signals and always keep the roadheader in the optimal working state. The rotation speed regulation of the cutting head reaches the stable state after 0.05 s, with the overshoot of 1.42%. The swing speed regulation of the cutting head reaches the stable state after 1 s, with the overshoot of 5.3%. Conclusions provide a basis for improving the cutting efficiency and prolonging the working life of the roadheader.

show abstract

“…The rotary table was accurately modeled, and other components, such as the hydraulic cylinder, cutting part, rotary pin shaft, and rotary support, were simpli ed, but their accuracies were maintained. The overall simulation model was set to a zero-gravity state, and the reaction force of the rock to the cutting head and the self-weight of the cutting part were added to the cutting part in the form of load [20].…”

Section: Dynamic Simulation Model Of the Cutting Part And Rotary Tablementioning

confidence: 99%

Analysis of Stress, Strain, and Fatigue Strength of the Rotary Table of Boom-Type Roadheaders

Wang

¹

,

Zhang²,

YAO³

et al. 2020

Preprint

View full text Add to dashboard Cite

The rotary table is the key component in the optimal design of roadheaders. In this study, a simulation model of the cutting part and a rotary table is established in SolidWorks, and stress analysis and strength evaluation of the structure of the rotary table are performed. To this end, finite element analysis is performed on the basis of the dynamic theory of a coupled multibody system comprising rigid and flexible bodies. Considering actual working conditions, the load file of the cutting head is calculated based on the development of the “Roadheader Machine load Calculation Program”, and the stress and strain cloud map of the cutting head running to the bottom left, middle end, and right end of the rotary table is obtained through Adams simulation. Then, the 6-order modal analysis is carried out, and the S-N curve of the turntable is finally established. In addition, the fatigue life reliability of the turntable is analyzed using the AWE fatigue module. The results show that, provided reliable working conditions, the EBZ160 type roadheader machine during the normal service life shows no risk of fatigue failure under normal working load.

show abstract

“…The rotary table was accurately modeled, and other components, such as the hydraulic cylinder, cutting part, rotary pin shaft, and rotary support, were simplified, but their accuracies were maintained. The overall simulation model was set to a zero-gravity state, and the reaction force of the rock to the cutting head and the self-weight of the cutting part were added to the cutting part in the form of load [20].…”

Section: Dynamic Simulation Model Of the Cutting Part And Rotary Tablementioning

confidence: 99%

Analysis of Stress, Strain, and Fatigue Strength of the Rotary Table of Boom-type Roadheaders

Tian

¹

,

zhang²,

Yao³

et al. 2020

Preprint

0

View full text Add to dashboard Cite

The rotary table is the key component in the optimal design of roadheaders. In this study, a simulation model of the cutting part and a rotary table is established in SolidWorks, and stress analysis and strength evaluation of the structure of the rotary table are performed. To this end, finite element analysis is performed on the basis of the dynamic theory of a coupled multibody system comprising rigid and flexible bodies. Considering actual working conditions, the load file of the cutting head is calculated based on the development of the “Roadheader Machine load Calculation Program”, and the stress and strain cloud map of the cutting head running to the bottom left, middle end, and right end of the rotary table is obtained through Adams simulation. Then, the 6-order modal analysis is carried out, and the S-N curve of the turntable is finally established. In addition, the fatigue life reliability of the turntable is analyzed using the AWE fatigue module. The results show that, provided reliable working conditions, the EBZ160 type roadheader machine during the normal service life shows no risk of fatigue failure under normal working load.

show abstract

Performance Analysis of a Hybrid Power Cutting System for Roadheader

Cited by 11 publications

References 14 publications

Adaptive Cutting Control for Roadheaders Based on Performance Optimization

Adaptive Cutting Control for Roadheaders Based on Performance Optimization

Analysis of Stress, Strain, and Fatigue Strength of the Rotary Table of Boom-Type Roadheaders

Analysis of Stress, Strain, and Fatigue Strength of the Rotary Table of Boom-type Roadheaders

Contact Info

Product

Resources

About