New Computer Simulation Procedure of Heading Face Mining Process with Transverse Cutting Heads for Roadheader Automation

Dolipski, M.; Cheluszka, Piotr; Sobota, P.; Remiorz, Eryk

doi:10.1515/amsc-2017-0007

Cited by 11 publications

(17 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Theoretically, due to the extremely complex working environment of coal mine, the boom-type roadheader should be a system with infinite degree of freedom during the horizontal cutting process. Therefore, in order to establish the dynamical coupling model of roadheader's body pose, it is necessary to make reasonable and appropriate simplification and assumption for the working state of roadheader [25][26][27].…”

Section: Overall Mechanical Analysis During the Horizontal Cuttingmentioning

confidence: 99%

Multifactor Analysis of Roadheader’s Body Pose Responses during the Horizontal Cutting Process

Zong

Zhang

Wang

et al. 2018

Shock and Vibration

View full text Add to dashboard Cite

Based on the Lagrange equation in system dynamics, aiming at the horizontal cutting process, the dynamical coupling model of boom-type roadheader’s body pose was established. According to input problem of solving the model, a calculation method of the cutting head load was proposed, and the relationship between the cutting head load and pressure of the driving cylinders and swing angle of the cutting arm was obtained through simulating analysis. The simulation model was established to solve the dynamical coupling model. The cutting head load, horizontal swing angle of the cutting arm, and dip angle of coal seam were regarded as independent variables to perform changing parameter analysis in variations of the body pose. The field experiment was carried out, and the measured data is basically consistent with the simulation values. The results show that lateral displacement of the body can reach up to 6.5 cm, backward displacement can reach up to 5.2 cm, floor-based quantity can reach up to 11 cm, pitch angle of the body can reach up to 7.8°, and roll angle can reach up to 2.1°. Variations of the body pose parameters are influenced greatly by the cutting head load, while the influence from horizontal swing angle of the cutting arm and dip angle of coal seam is slighter. Among the pose parameters, floor-based quantity and pitch angle of the body vary relatively greatly, which tend to seriously influence forming quality of the roadway and should be mainly considered in deviation rectification of the roadheader’s body pose.

show abstract

Section: Overall Mechanical Analysis During the Horizontal Cuttingmentioning

confidence: 99%

Multifactor Analysis of Roadheader’s Body Pose Responses during the Horizontal Cutting Process

Zong

Zhang

Wang

et al. 2018

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…analysis of the effects on cutting performance and cannot be involved in a quantitative calculation or evaluation, similar to the processing parameters of the cutting picks. 8 Due to these issues, it is important to select realistic evaluation indicators in order to develop a roadheader cutting evaluation indicator system. Many factors that could affect the cutting performance evaluation of a roadheader are: the cutting unit parameters, the walking unit parameters, the spading plate unit parameters, the transport parameters, the electrical partial, and the hydraulic partial.…”

Section: Certain Indicators Can Only Execute a Qualitativementioning

confidence: 99%

“…Certain indicators can only execute a qualitative analysis of the effects on cutting performance and cannot be involved in a quantitative calculation or evaluation, similar to the processing parameters of the cutting picks. 8…”

Section: The Cutting Performance Evaluation Indicator Systemmentioning

confidence: 99%

“…39 The Polish researchers Dolipski and colleagues established a mathematical model for the roadheader. 8 (3) A dynamic characteristics analysis theory was created by the Liaoning Technology University of China by establishment of a rigid–flexible coupling virtual prototype model. Wu Miao and colleagues studied experimentally the vibration characteristics of an AM50-type roadheader and designed the structure, with consideration to the vibration testing, workload spectrum determination, experimental modal analysis, dynamic characteristics analysis, and structure optimization simulation .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cutting performance evaluation of a roadheader machine by PCA and RBF

2018

View full text Add to dashboard Cite

As coal mining technology has continuously evolved, gradually the industry has moved toward fully mechanized mining. A roadheader machine is important mechanical equipment for roadway drivage through mechanical crushing. Through analysis and research to discover the key parameters relating to the cutting performance of the roadheader machine, the performance of the roadheader machine must be optimized and costs reduced, as well as productivity increased. As one of the most important statistical methods, principal component analysis (PCA) could not only reduce many factors into fewer overall targets, it could also provide the comparative item weighting, improving the computational efficiency and error precision of the radial basis function neural network, eliminating the correlation of each input variable, and increasing the stability of the network model. The principal variables are determined and a cutting performance evaluation model developed that allow both performance prediction and cutting performance evaluation. From the analysis it is concluded that the primary indicators of the roadheader cutting performance were the unidirectional compressive strength, the cutting resistance fluctuation, the weaving speed of the cutting head, the cutting power fluctuation, and the traction resistance fluctuation. The model is consistent with the practical test results and contributes to discovery of future optimization procedures.

show abstract

“…13,14 In adaptive cutting strategy, cutting parameters, including rotating and swing speed, are adjusted in real time based on the properties of coal-rock to ensure the stability of cutting load. [15][16][17] In the cutting process of coal lane crosssection, cutting gangue will cause the sudden change of cutting load, resulting in serious pick wear of and severe vibration, 18,19 which will increase the failure rate and reduce the service life of robotized roadheader. 20 To improve the cutting stability of the coal lane cross-section, this work proposes a cutting strategy to avoid gangue and cut remaining coal-rock firstly, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Full coverage cutting path planning of robotized roadheader to improve cutting stability of the coal lane cross-section containing gangue

Zhang

Liu

Jia

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The purpose of this work is to improve the cutting stability of robotized roadheader through the full coverage cutting path planning of the coal lane cross-section containing gangue. Cutting gangue will bring serious pick wear and severe vibration, which will reduce the service life of robotized roadheader. Therefore, the strategy that avoiding the gangue and cutting the remaining coal-rock was recommended. Firstly, the environment grid map of the cross-section containing gangue was established and the grid attribute was assigned. To describe the arbitrary position of gangue, a random generation method was developed. On this basis, the combination of biologically inspired neural network (BINN) and floating template method was proposed to overcome the shortcomings of traditional BINN and the full coverage cutting path planning simulation was carried out. The simulation shows a better result that the average repetition rate is approximately 10% under the condition that the cutting coverage rate is more than 95%. Finally, the cutting experiment of the coal-rock sample containing gangue on the robotized roadheader cutting platform was performed. Based on the infrared thermography and cutting signal obtained by the previous round cutting, the cutting path of the second round was planned and the cutting experiment was conducted. The experiment results show that the cutting temperature rise and the cutting vibration of the second round cutting can be effectively reduced by approximately 60% and 90%, which demonstrated that the cutting stability of the cross-section containing gangue can be effectively improved by the cutting path planning strategy of avoiding gangue.

show abstract

New Computer Simulation Procedure of Heading Face Mining Process with Transverse Cutting Heads for Roadheader Automation

Cited by 11 publications

References 5 publications

Multifactor Analysis of Roadheader’s Body Pose Responses during the Horizontal Cutting Process

Multifactor Analysis of Roadheader’s Body Pose Responses during the Horizontal Cutting Process

Cutting performance evaluation of a roadheader machine by PCA and RBF

Full coverage cutting path planning of robotized roadheader to improve cutting stability of the coal lane cross-section containing gangue

Contact Info

Product

Resources

About