Research on signal analysis and diagnosis of chain drive system of the scraper conveyor guided by artificial intelligence algorithm

Murai, Jun; Zhang, Yang; Lu, Jinnan

doi:10.1016/j.ijleo.2022.170149

Cited by 4 publications

(8 citation statements)

References 15 publications

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“…The basic commands commonly used in the transmission system are classified and the basic fault identification framework is set by using the CEEMD parsing procedure [9], in which the initial identification commands are given. For the modal overlap problem in the conventional system [10], the improvement range is set and the instruction conversion is performed.…”

Section: Initial Fault Identificationmentioning

confidence: 99%

Design of a Fault Diagnosis Method for Transmission System of Hydraulic Support Truck for Coal Mine

2023

J. Phys.: Conf. Ser.

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To improve the speed of fault diagnosis of the handling car transmission system, it is necessary to design and analyze the fault diagnosis method of the hydraulic support handling car transmission system for coal mines. Firstly, the coupling demodulation abnormal signal is obtained, and the initial fault identification is realized by using the improvement instruction. Based on this, the fault diagnosis method for the transmission system of the hydraulic support truck(FFT) high-frequency fault diagnosis model is designed, and the fault diagnosis is finally realized through database regulation. The test results show that the diagnostic response time of the designed method is only 1.05s, indicating that the designed method is faster in diagnosis during practical application and can quickly assist in the repair of the transmission system of the hydraulic bracket handling car for coal mines, which has practical application value.

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Section: Initial Fault Identificationmentioning

confidence: 99%

Design of a Fault Diagnosis Method for Transmission System of Hydraulic Support Truck for Coal Mine

2023

J. Phys.: Conf. Ser.

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“…The total friction on the middle or bottom plate includes the friction between the scraper chain and plate, coal and plate, coal and so on. These friction coefficients can be found in the literature (Zhang and Fang, 1986;Broadfoot and Betz, 2000;Mao, 2006) or determined by experiments (Wauge, 2002). However, the equivalent friction coefficient is adopted in this paper to simplify the modelling, and the equivalent value can be determined according to reference (Mao, 2006).…”

Section: The Horizontal Bend Sectionmentioning

confidence: 99%

“…Its output variables are the load torque (Tload1) and tangent acceleration (a1) of the head sprocket. The Sprocket2 is used to capture Zhang and Fang (1986), Mao (2006), Wauge (2002) the dynamic behaviour of the tail sprocket. Its input variables are the driving torque from the driving system at tail frame (T2), the tension of control element (nþ1) (fn1) and the tension of control element (nþ2) (fn2).…”

Section: Simulation Modelmentioning

confidence: 99%

“…The dynamic friction coefficient between the scraper chain and chute side is always taken as 0.4 (Zhang and Fang, 1986). According to reference (Mao, 2006), the equivalent dynamic friction coefficients on the middle and bottom plates are 0.423 and 0.25, respectively. In general, the static friction coefficient is greater than the dynamic friction coefficient by approximately 10% (Wauge, 2002).…”

Section: Case Studiesmentioning

confidence: 99%

“…Thus, different dynamic tension test and control systems are designed (Dolipski et al, 2015;Kulinowski, 2013Kulinowski, , 2014Wang et al, 2017). Combined with the artificial intelligence algorithm, Mao et al (2022) analyse and diagnose the signal of the chain drive system of the AFC to judge the signal condition of the chain drive system in time. This can effectively improve the healthy operation of the AFC.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic modelling of an armoured face conveyor considering the curved chains

Yuan

Zhang

2023

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PurposeDue to the structural layout, mining process, and working environment, curved chains such as horizontal and vertical bends inevitably exist in the armoured face conveyor (AFC). With the increasing power, conveying capacity, and distance of the AFC, the dynamic influence of these curved chains should be highly emphasized. This paper establishes a dynamic model of the AFC by multi-body system theory and finite segment method, in which the curved chains can be fully considered.Design/methodology/approachThe scraper chains are firstly grouped into the straight, horizontal bend, vertical convex and concave bend sections. Each bend section running in a circle is simplified as an ideal arc. Through solving its differential equilibrium equation and using Newton's second law, its running resistance is derived. Then the grouped chains are discretized into finite control elements according to the Kelvin model, and the governing equation of each control element is established. The dynamic model of the AFC is obtained by assembling these equations, and the corresponding simulation model is developed by using MATLAB/Simulink.FindingsCase studies with real scenarios are provided, and simulations are carried out. The results show that the running resistance contributed by the curved chains is larger than the traditional empirical value.Originality/valueThe work in this paper helps the dynamic performance design of AFC, with a deep understanding of the curved chains.

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Dynamic response analysis of scraper conveyor under the condition of chain broken

Xie¹,

Liu²,

Xie³

2023

J. vibroeng.

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In view of the fact that the traditional study of the chain breaking condition of the scraper conveyor only considers the case of two-way simultaneous chain breaking, this paper mainly studies the single-side chain breaking condition and its influence on the longitudinal vibration and swing vibration characteristics of the scraper chain system. Using the tension calculation principle of the point-by-point tension method, each section of the scraper in the study area is taken as a unit. A coupled dynamic model of longitudinal and oscillating vibration of scrapers is established and connected with Voigt model. The dynamic response laws of the longitudinal and oscillating vibration of the scraper before and after the chain fracture under different transportation conditions are numerically simulated. The calculation results show that when there is material behind the broken chain, the longitudinal tension of the chain and the oscillating vibration of the scraper reach the maximum value, and the chain speed fluctuation reaches 543.1 % compared with the normal operating conditions. Only when there is material in front of the broken chain, the longitudinal tension mutation of the chain and the oscillating vibration value of the scraper are weaker than those of the previous working conditions. When there are materials at the front and back of the broken chain, the sudden change of the longitudinal tension of the chain and the oscillating vibration value of the scraper are the minimum, but they also reach twice the normal working condition, and the chain speed fluctuation reached 194.4 %. The research results of this paper provide a theoretical basis for grasping the operation status of the scraper conveyor in the coal mine and predicting the life of the scraper conveyor.

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Research on signal analysis and diagnosis of chain drive system of the scraper conveyor guided by artificial intelligence algorithm

Cited by 4 publications

References 15 publications

Design of a Fault Diagnosis Method for Transmission System of Hydraulic Support Truck for Coal Mine

Design of a Fault Diagnosis Method for Transmission System of Hydraulic Support Truck for Coal Mine

Dynamic modelling of an armoured face conveyor considering the curved chains

Dynamic response analysis of scraper conveyor under the condition of chain broken

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