螺旋钻采煤机犁煤板的结构及参数分析

发布时间：2018-08-06 18:56

【摘要】：为了提高螺旋钻采煤机犁煤板的收煤率,降低其能耗,提出3种结构形式的犁煤板,建立犁煤板物料回收离散元模型,利用该模型分别对不同形式犁煤板的结构参数进行仿真分析。研究结果表明:螺旋形犁煤板的收料比能耗和收煤率均随螺旋导程的增大而减小;圆弧形犁煤板的收煤率大体上随倾斜角的增大而减小,随圆弧半径的增大而增大;其收料比能耗大体上随倾斜角的增大先减小而后增大,随圆弧半径的变化无显著规律性;当倾斜角为40°左右,圆弧半径为300 mm左右时,犁煤板的收料比能耗较小;平面形犁煤板的收煤率大体上随铲角和倾角的增大而减小;收料比能耗大体上随铲角的增大而增大,随倾角的增大而减小;在研究的结构参数范围内,当铲角和倾角同时在30°左右取值时,犁煤板的比能耗较小;在3种结构形式的犁煤板中,倾角和铲角均为0°的平面形犁煤板能获得的收煤率最高。
[Abstract]:In order to improve the coal recovery rate and reduce the energy consumption of the plough plate of the helical drill shearer, a discrete element model of ploughing plate material recovery was established by using three kinds of structure plough coal plate. The model is used to simulate and analyze the structural parameters of different ploughs. The results show that the specific energy consumption and coal recovery rate of the spiral plough plate decrease with the increase of the helical lead, and the coal recovery rate of the arc plough plate decreases with the increase of the angle of inclination and increases with the increase of the radius of the arc. The specific energy consumption decreases first and then increases with the increase of inclined angle, and has no obvious regularity with the radius of arc, when the angle of inclination is about 40 掳and the radius of arc is about 300 mm, the specific energy consumption of coal plough plate is smaller. The coal recovery rate of flat plough plate decreases with the increase of shovel angle and dip angle, the specific energy consumption increases with the increase of shovel angle and decreases with the increase of dip angle. When the shovel angle and dip angle are about 30 掳at the same time, the specific energy consumption of plough plate is smaller, and the plough plate with dip angle and shovel angle of 0 掳can obtain the highest coal recovery rate.
【作者单位】：中国矿业大学机电工程学院;
【基金】：国家高技术研究发展计划(863计划)项目(2012AA062102) 国家自然科学基金资助项目(51375478)~~
【分类号】：TD421.6

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