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Volume 112
Coupling mechanism of dynamic adjustment of installation angle and loading performance of star wheel set in tunneling loading mechanism
Hong Zhang *, Jucai Li, Wenzhou Chen, Qian Feng, Lu Yang
School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China
10.1016/j.partic.2026.02.024
Volume 112,
May 2026,
Pages 99-110
Received 8 October 2025, Revised 14 February 2026, Accepted 18 February 2026, Available online 12 March 2026, Version of Record 17 March 2026.
E-mail:
hexie007@tyust.edu.cn
Highlights
• Analyzes star wheel angle impact on loading performance.
• Tests installation angle impact on particle movement patterns.
• Explore optimal angle settings to enhance efficiency.
• Studies link between angle changes and particle loading effects.
• Provides strategy for enhancing star wheel loading capability.
Abstract
This work investigates the coupling mechanism between installation angle adjustment and loading performance in heterogeneous star wheel sets of tunneling loading mechanisms. A discrete element model for three-to-seven-arm star wheel sets was established to evaluate the effects of installation angle on loading efficiency, resistance torque, and coal-rock particle flowability. The results show that asymmetric installation significantly alleviates particle blockage by altering flow patterns from compressive to shear-dominated transport. Optimal angles for maximum loading efficiency are 45° (three-/four-arm), 30° (five-/six-arm), and 25.7° (seven-arm). Minimum resistance torque occurs at 15° (three-to-six-arm) and at 0° (seven-arm). The five-arm set at 36° achieves both high efficiency and reduced blockage. These findings provide theoretical guidance for optimizing star wheel installation angles in tunneling equipment.
Graphical abstract
Keywords
Tunneling loading mechanism; Star wheel set; Installation angle adjustment; Coal rock particle fluidity; Loading performance
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