The transporting efficiency and mechanical behavior analysis of scraper conveyor

Wang, Xuewen; Li, Bo; Zhao-jian, Yang; Cai, Liu

doi:10.1177/0954406217734002

Cited by 21 publications

(13 citation statements)

References 24 publications

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“…Locking rings and set screw prevent axial displacement and overspinning of the sprockets. The final design of the conveyor is shown in Figure 5 [9,10,12].…”

Section: Resultsmentioning

confidence: 99%

Optimization of Production Logistics

Kampf¹,

Hlatká²,

Bartuška³

2018

Adv. Sci. Technol. Res. J.

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The paper focuses on the optimization of production logistics within the selected company, which is going to relocate the machining centre to the Czech Republic. The aim of this paper was to design a suitable conveyor to optimize the machining centre's entire production process. On the basis of the company's input requirements, the necessary calculations were carried out, which led to the construction of the conveyor model. Proposing the model was preceded by selecting a suitable conveyor which will be used in production.

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“…Locking rings and set screw prevent axial displacement and overspinning of the sprockets. The final design of the conveyor is shown in Figure 5 [9,10,12].…”

Section: Resultsmentioning

confidence: 99%

Optimization of Production Logistics

Kampf¹,

Hlatká²,

Bartuška³

2018

Adv. Sci. Technol. Res. J.

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“…In order to improve the cutting performance of the cutting head, specific energy consumption Hω, cutting resistance fluctuation coefficient ρ, total cutting resistance Fmag, cutting head consumption power Pg, and σA∼σD should be as low as possible. According to the structural characteristics of this road header type and the actual work requirements of the enterprise, with full consideration of the influence of various factors on the overall performance, 30 the corresponding weights are set as 0.35, 0.1, 0.1, 0.1, 0.1, 0.15, 0.05, and 0.05, respectively. Thus, the objective function can be described as where Hωmax is the maximum specific energy consumption in the theory domain (kW·h·m −3 ); Fgmax is the maximum cutting resistance in the theory domain (N); σA, σB, σC, and σD…”

Section: Optimization Of Spiral Angle Of Cutting Headmentioning

confidence: 99%

Research on spiral angle optimization for longitudinal road header's cutting head

Liu

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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The cutting head is the key component of a road header in tunnel excavation, where the concept of the spiral angle design directly affects the comprehensive performance, which includes cutting resistance, fluctuation coefficient, specific energy consumption, cutting head stress distribution, and so on. Based on the theory of rock-breaking by pick, the mechanical model of pick was established, and the three-dimensional force vector in the WORKBENCH coordinate system was determined. The 3D model of the proposed cutting head was designed using PRO/E and the static simulation was carried out using WORKBENCH, while the stress information of key parts was obtained. Furthermore, a four-dimensional fitting method was used to investigate the influence of the horizontal swing speed, rotational speed, and spiral angle of the cutting head, on the stress of the cutting head assembly. By setting the horizontal swing speed, rotational speed and the spiral angle as design variables and the specific energy consumption, total cutting resistance, fluctuation coefficient, power consumption, and stress on cutting head assembly as the objective function; the multiobjective optimization function of the cutting head was established. By using genetic algorithm, the complex problem has been solved. The solution of this optimization function provides the horizontal swing speed, rotational speed, and spiral angle values, where the optimal performance is achieved, in the aspect of energy consumption, cutting resistance, fluctuation coefficient, cutting power, and cutting motor power. This method provides solid guidance and is a great reference in spiral angle design and optimization.

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“…They were used to define the geometric model of the spiral aggregate device and the slime water particles, respectively. The main differences between the two material parameters are in shear modulus and density, where the shear modulus of steel is 7.9×10 9 Pa, the density is 7850 kg/m 3 , and the slime water is set to 1.98×10 9 Pa and 1100 kg/m 3 . In addition, both materials have a Poisson's ratio of 0.3 and a work function of 0.…”

Section: Simulation Parameters and Simulation Processmentioning

confidence: 99%

“…With the development of numerical simulation technology, the discrete element method (DEM) has been widely used in the simulation of fluid and solid materials [6][7][8]. Many scholars have also completed the design and performance analysis of complex mechanical structures, such as scraper conveyor [9], belt conveyor [10], feeder [11], and coal mining machine [12], by means of DEM.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Spiral Aggregate Device on the Sump Cleaning Machine by Discrete Element Method

Gao¹,

Xu²,

Zhang³

et al. 2018

Int. j. simul. model.

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Sump cleaning machine is important coal mine equipment designed to reduce the labour intensity of underground workers, and its front end usually uses a spiral aggregate device. However, the traditional empirical design methods cannot accurately obtain the optimal parameters and defects in design of the spiral aggregate device due to the complex structure. To improve the design approach, the discrete element numerical model of the working process of the spiral aggregate device was constructed to conduct simulation research and design three key parameters, namely, screw shaft speed, roof inclination angle of the feeding port, and number of throwing plates. Results demonstrate that the aggregate rate increases first and then decreases with the increase in the rotating speed of screw shaft. In addition, the increase in the number of throwing plates is beneficial to improve the stability of the axial movement of slime water. The roof inclination angle of the feeding port has no significant influence on the aggregate effect. The results provide guidance for improving the structure of the spiral aggregate device and a reference for optimizing the design of complex screw mechanisms.

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The transporting efficiency and mechanical behavior analysis of scraper conveyor

Cited by 21 publications

References 24 publications

Optimization of Production Logistics

Optimization of Production Logistics

Research on spiral angle optimization for longitudinal road header's cutting head

Analysis of Spiral Aggregate Device on the Sump Cleaning Machine by Discrete Element Method

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