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

Zhao, Lijuan; Liu, Hongmei; Zhou, Wenchao

doi:10.1155/2019/1482051

Cited by 9 publications

(7 citation statements)

References 7 publications

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“…After drawing the parts of corresponding submodules, virtual assembly of the thresher frame is carried out from bottom to top. e built 3D model is saved in STP format, and then the material properties are defined by ANSYS 15.0 software [30].…”

Section: Finite Element Analysis Of Chassis Framementioning

confidence: 99%

Structure Design and Bearing Capacity Analysis for Crawler Chassis of Rice Combine Harvester

Tang

Ren

et al. 2020

Complexity

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Due to the current unstable travel performance and poor driving maneuverability of rice combine harvester crawler chassis with high load in the rice field, the driver’s standard sitting posture model was developed by analyzing the handling of the crawler chassis driving control panel. Based on this model, the joystick length and cab manipulation space layout were designed. The Finite Element Software was used to develop the loading and restraining model of the chassis frame, and then the structural characteristics and bearing capacity of the crawler chassis were analyzed. The high-bearing running stability and the rationality of operating force of the joystick of rice combine harvester crawler chassis designed in this paper through experiments were verified by experiments. The results showed that when the crawler chassis of rice combine harvester bears a load of 3.5 t, the driving speed is relatively stable in the three speed ranges of 1 m/s, 1.5 m/s, and 2 m/s, and the maximum variance of driving speed variation is 5.022 × 10−4. The actual average operating force of each operating lever on the crawler chassis ranges from 30.36 to 42.71 N, and the operating force of each operating lever is suitable for 95% of Chinese adult male operators. The research results provide a good method and reference for the future development of the crawler chassis structure of rice combine harvester.

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Section: Finite Element Analysis Of Chassis Framementioning

confidence: 99%

Structure Design and Bearing Capacity Analysis for Crawler Chassis of Rice Combine Harvester

Tang

Ren

et al. 2020

Complexity

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“…Subsequently, DEM simulation had an application in the field of screw conveying to investigate conveying performance and bulk material conveying [17][18][19][20]. In addition, the DEM was also popular and widely utilized in other fields, such as in the chemical industry [21,22], pneumatic conveying [23][24][25], and rock cutting and crushing [26][27][28][29][30]. Moreover, DEM had been applied in the field of coal shearing [31,32].…”

Section: Introductionmentioning

confidence: 99%

Loading Performance of a Novel Shearer Drum Applied to Thin Coal Seams

et al. 2021

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The poor loading performance of shearer drums restricts the development and production efficiency of coal in thin coal seams. Changing operation and structural parameters can improve the drum’s loading performance to some extent, but the effect is not obvious. A two-segment differential rotational speed drum (TDRSD) was proposed after analyzing the drum’s influence mechanism on coal particles. To further reveal the drum’s coal loading principle, the velocity, particles distribution, and loading rate were analyzed. The effect of the matching relationship of the rotational speed and helix angle between the front and rear drum are also discussed. The results show that a lower front drum rotational speed had a positive impact on improving the loading performance, and the loading rate first increases and then decreases with the increase in rear drum rotational speed. The optimal loading performance was obtained in the range 60–67.5 rpm. The front drum’s helix angle had no evident effect on loading performance, and the loading rate increase with the increase in the rear drum’s helix angle. The results provide a reference and guidance for operation parameters selection, structure design, and drum optimization.

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“…e cutting action of the drum has been studied by the scholars' abundant research studies [1,2]; Yang et al [3] studied the wear in conical picks in rotationdrilling cutting progress by experimental and theoretical methods. Zhao et al [4] used ANSYS/LS-DYNA software to study the dynamic transmission law of the spiral drum cutting coal rock and obtained the stress distribution of the drum in the cutting process. Liu et al [5] proposed a new three-drum shearer and studied the cutting performance of the pick in deep coal conditions.…”

Section: Introductionmentioning

confidence: 99%

Complex Effects of Drum Hub Forms and Structural Parameters on Coal Loading Performance

et al. 2020

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The extremely poor loading performance of a thin coal shearer drum affects the mining efficiency in thin seam mining seriously on account of the restriction by the complicated mining environment and seam thickness. The coal loading performance of the drum is influenced by several complex factors, such as motion parameters and structural parameters, including the structure and form of the hub. The form of the drum hub is cylindrical in general, and in order to study the influence of the hub form on the coal loading rate of the drum, seven drums with different hub forms and structures were designed. The influence of the complexity of hub structures on the coal loading performance was studied by discrete element method (DEM) simulation in this paper. The change curves with the research object of different drums, such as coal loading rate, velocity field distribution, and contact force between fallen coal particles, were obtained. The results showed that the conical hub drum can improve the coal loading performance than the cylindrical hub drum, and the curve-shaped hub drum had a more obvious promotion on the coal loading performance. The coal loading rate increased first and then decreased with the increase of hub cone angle. Compared with the conical hub drum, the curve-shaped hub drum can not only improve the coal loading rate, but also has a larger space containing coal. This study has proposed a drum with a new form hub which could increase the coal loading rate, and the methods and conclusions provide the guidance for drum hub design.

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

Cited by 9 publications

References 7 publications

Structure Design and Bearing Capacity Analysis for Crawler Chassis of Rice Combine Harvester

Structure Design and Bearing Capacity Analysis for Crawler Chassis of Rice Combine Harvester

Loading Performance of a Novel Shearer Drum Applied to Thin Coal Seams

Complex Effects of Drum Hub Forms and Structural Parameters on Coal Loading Performance

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