Towards the identification of worn picks on cutterdrums based on torque and power signals using Artificial Neural Networks

Gajewski, Jakub; Jonak, Józef

doi:10.1016/j.tust.2010.08.005

Cited by 27 publications

(6 citation statements)

References 13 publications

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“…die spezifische Löseenergie. Der aktuelle Energiebedarf der Gewinnungsmaschine ist unter Berücksichtigung von Verlusten somit eine Reflektion der aktuellen Schneidparameter und der Prozesse, die an der Spitze des Schneidwerkzeugs ablaufen [20].…”

Section: Bild 1 Wirkungsdreieck Werkzeug -Materials -Maschine Nach [1]unclassified

Zustandsüberwachung von Schneidwerkzeugen zur schneidenden Gewinnung von Festgesteinen mithilfe der Emissionsanalyse

et al. 2014

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Section: Bild 1 Wirkungsdreieck Werkzeug -Materials -Maschine Nach [1]unclassified

Zustandsüberwachung von Schneidwerkzeugen zur schneidenden Gewinnung von Festgesteinen mithilfe der Emissionsanalyse

et al. 2014

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“…In numerical studies of picks, the main methods are the finite-element method (FEM) [11][12][13] and the discrete-element method [14][15][16]. In pick experiments, different testbeds have been established, such as the coal-rock cutting testbed [17,18] and automated rotary coal/rock cutting simulator (ARCCS) testbed [19][20][21] used for rotary cutting, the single-pick testbed [22,23], the fullscale cutting testbed [24,25] and some modified test devices [26,27]. Research attention is now turning to pick failure.…”

Section: Introductionmentioning

confidence: 99%

“…Research attention is now turning to pick failure. Because most pick failures are due to wear, pick wear has been investigated experimentally [26][27][28][29][30]. To reveal the mechanism for pick wear, the interaction between a pick and the rock material has been studied [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Effect of contact characteristics on the self-rotation performance of conical picks based on impact dynamics modelling

Liu

Geng

2020

R. Soc. open sci.

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Conical picks have a harsh working environment and 70% of their failures are caused by wear. It has been found that conical picks can rotate while interacting with the working material. This self-rotation ability is an important factor affecting pick wear, but the self-rotation mechanism remains unclear. Researching the mechanism involves the impact and friction dynamics of the interaction between a pick and its holder. Thus, a dynamic finite-element numerical model for the pick–holder interaction is established. How the handle–holder gap width, pick body and handle lengths and pick handle diameter affect the settling time and the percentage of time with no contact is studied to compare the numerical results with the equivalent effects on the rotation angle in experiments. Doing so indicates that the main factor in the self-rotation ability of a conical pick is not the magnitude of the contact load but its duration. The present research provides a new method for revealing the mechanism for the self-rotation of conical picks.

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“…Loui and Karanam [11] used finite element software to study the law of the tooth temperature change in 2005 and found the relationship between the surface temperature of the cutter, the speed of the drum, and the traction speed. In 2010, Gajewski and Jonak [12] carried out a cutting test of pick type and knife cut teeth of different wear states and obtained the cutting power and torque distribution law when cutting coal rock with different cutting teeth. Hoseinie et al [13] analyzed the reliability of the key shearer system in 2012 and established the mathematical model of the reliability evaluation of the shearer.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Dynamic Transmission Law of Spiral Drum Cutting Coal Rock Based on ANSYS/LS‐DYNA Simulation

2019

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The ANSYS/LS-DYNA software has been used in this paper to establish the coal rock coupling model. A dynamic simulation of the cutting process was used to analyze the variation of the load. Based on the dynamic analysis of the coal and rock that were cut by the spiral drum, the stress cloud diagram of the coupled model of the spiral drum and the coal and the plastic domain evolution law of the coal and the rock were obtained from the coal to the rock. The time history curves of the parameters, such as the stress and strain of the drum and the pick, were obtained, and the stress distribution of the spiral drum during the working process was ascertained. The results showed that when the spiral drum cuts the interface between the coal and the rock, the coal and the rock collapsed and the working load fluctuated. Changing the traction speed in order to change the rotational speed of the drum had a more obvious effect on the load and the stress on the drum. Through the use of simulation, the stress distribution cloud diagram of the drum was obtained. The study has shown that the stress on the end plate was significantly higher than that on the cutting blade. The maximum stress acting on the alloy head was 1209.26 MPa. This study has provided a basis for the design and optimization of the drum with regard to reliability.

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Towards the identification of worn picks on cutterdrums based on torque and power signals using Artificial Neural Networks

Cited by 27 publications

References 13 publications

Zustandsüberwachung von Schneidwerkzeugen zur schneidenden Gewinnung von Festgesteinen mithilfe der Emissionsanalyse

Zustandsüberwachung von Schneidwerkzeugen zur schneidenden Gewinnung von Festgesteinen mithilfe der Emissionsanalyse

Effect of contact characteristics on the self-rotation performance of conical picks based on impact dynamics modelling

A Study on the Dynamic Transmission Law of Spiral Drum Cutting Coal Rock Based on ANSYS/LS‐DYNA Simulation

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