Dynamic characteristics analysis on shearer drum in condition of cutting coal with different distributed rocks

• Main Authors: Qingliang Zeng, Kao Jiang, Kuidong Gao, Lirong Wan
• Format: Article
• Language: English
• Published: JVE International 2018-12-01
• Series: Journal of Vibroengineering
• Subjects: shearer drum; simulation; rock distribution; mean force; peak force
• Online Access: https://www.jvejournals.com/article/19531

Dynamic characteristics analysis on shearer drum is an important aspect in shearer design and a well-structured shearer drum provides better performance in vibration reduction and service life extension. To make reference for structure improvement, many researchers have focused on the dynamic analysis on cutting pick. However, the simplified model such as single pick, linear motion and continuous coal in the previous study made it divorced from actual situations underground. On basis of this, the model of shearer drum with several arranged picks and the coal model with some distributed rock have been set up in order to consist with the real working conditions. Through simulation, it can be found that the mean force in X-direction is little influenced by rock distribution, but the peak force in X-direction fluctuates greatly under different rock distribution. During the analysis on the peak force, it can be found that this kind of force could be cut down effectively when the rock was distributed on the top of the shearer cutting range. Based on these conclusions, we can program the cutting strategy to lower the influence of cutting forces on the shearer and its drum in the future.