Optimal selection of signal features in the diagnostics of mining head tools condition

Jedliński, Łukasz; Gajewski, Jakub

doi:10.1016/j.tust.2018.11.042

Cited by 13 publications

(3 citation statements)

References 19 publications

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“…One method of counteracting destructive processes is the use of materials with increased resistance to abrasive wear and the common oversizing of the structure of drive units, in particular the size of bearings, thickness of supporting sheets, and dimensions of gear wheels. The applied solution, on the one hand, does not ensure the achievement of appropriate service life due to the synergistic nature of the impact of destructive processes; on the other hand, it leads to irrational management of raw materials and energy, which leads to the unsustainable development of the industry [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Multidimensional Data Interpretation of Vibration Signals Registered in Different Locations for System Condition Monitoring of a Three-Stage Gear Transmission Operating under Difficult Conditions

Wojnar

Burdzik

Wieczorek

et al. 2021

Sensors

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This article provides a discussion of the results of studies on the original system condition monitoring of a three-stage transmission with a bevel–cylindrical–planetary configuration installed in an experimental scraper conveyor. Due to the high vibroactivity of gear transmissions operating under the impact of a scraper conveyor’s chain drive, these unwanted effects of machine operating vibrations were assumed to be applied. For purposes of the study, vibrations were measured on the driving transmission housing in an idling scraper conveyor. The main purpose of the study was to establish the frequencies characteristic of the gear transmission, and to determine whether it was possible to run vibroacoustic diagnostics of the same transmission under conditions with a considerable impact of the conveyor chain. An additional cognitively significant research goal was the analysis of the dependence of the diagnostic utility of the signal depending on the sensor mounting point. Five different locations of three-axis sensors oriented to the next stages and various types of gears were determined, as well as places characterized by high spatial accessibility, which are often selected as places for measuring the vibration of gears. Using MATLAB software, a program was written that was calibrated and adapted to the specifics of the measuring equipment based on the collected test results. As a result, it was possible to obtain a multidimensional data interpretation of vibration signals of system condition monitoring of a three-stage gear transmission operating under difficult conditions. The results were based on signals registered on the real three-stage gear transmission operating under the impact of a scraper conveyor’s chain drive.

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Section: Introductionmentioning

confidence: 99%

Multidimensional Data Interpretation of Vibration Signals Registered in Different Locations for System Condition Monitoring of a Three-Stage Gear Transmission Operating under Difficult Conditions

Wojnar

Burdzik

Wieczorek

et al. 2021

Sensors

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“…Moreover, the neural system was used to analyze the resistance signal transmitted by the mining cutting head during the mining operation. This allowed the authors to check mechanical wear while also verifying the method's applicability to various mining machinery types 9 …”

Section: Introductionmentioning

confidence: 99%

Study on the wear of spiral drum cutting coal containing rock

Liu

2021

Engineering Reports

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Significant load fluctuations are encountered when cutting the coal rock using the shearer spiral drum, causing excessive drum wear. Thus, a coupling discrete element model of coal‐rock was developed, and the discrete element method and multi‐body dynamics were used to build a two‐way coupling simulation model of coal rock drum cutting. The drum wear was analyzed, along with the pick and spiral blade wear positions. The results have shown that the pick wear is primarily concentrated at the pick tip and the shaft shoulder, while the outer spiral blade edge blade is generally worn near the pick root. The maximum wear depth obtained in the simulation was 0.00316 mm. The tangential cumulative energy of the drum and the normal cumulative energy were 1.794e5 and 7.819e4 J, respectively. The friction wear of the drum was more prominent compared to the impact wear. By using a single factor method, the relationship between the drum rotational speed, traction speed, rock firmness coefficient, cutting depth, and spiral blade angle, and drum wear was obtained. Finally, it was concluded that the study at hand provides a quick and straightforward way to study drum wear law.

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“…Diagnostic of head tools wear [12,13]. The data recorded by the laser sensor, radar sensor and cameras allow the visualization station to determine the position of the shearer and the head.…”

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confidence: 99%

Automation and Robotization of Underground Mining in Poland

Bołoz

Biały

2020

Applied Sciences

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The article concerns the condition of automation and robotization of underground mining in Poland. Attention has been focused on the specific character of the mining industry. This limits the possibility of using robotization, and sometimes even the mechanization of certain processes. In recent years, robotic and automated machines and machine system solutions have been developed and applied in Poland. They are autonomous to a various degree, depending on the branch. The type of automation and artificial intelligence depends on the specific use. Some examples presently being used include the MIKRUS automated longwall system and autonomous device(s) for breaking rocks or mining rescue work. In Poland, fully automated plow systems produced by foreign companies are also used. Companies in Poland and international research centers are also actively engaged in the development of underwater and space mining. where robotization is of key importance. Research is also being undertaken by Robotics in Mining, euRobotics and PERASPERA as well as Space Mining Conference.

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Optimal selection of signal features in the diagnostics of mining head tools condition

Cited by 13 publications

References 19 publications

Multidimensional Data Interpretation of Vibration Signals Registered in Different Locations for System Condition Monitoring of a Three-Stage Gear Transmission Operating under Difficult Conditions

Multidimensional Data Interpretation of Vibration Signals Registered in Different Locations for System Condition Monitoring of a Three-Stage Gear Transmission Operating under Difficult Conditions

Study on the wear of spiral drum cutting coal containing rock

Automation and Robotization of Underground Mining in Poland

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