刮板输送机煤流动态分布模型

Model of dynamic coal flow distribution on scraper conveyor

采煤机和刮板输送机作为综采面的主要机电设备,其工作状态直接影响着开采率和企业的经济效益。刮板输送机为采煤机提供牵引和导向装置,使采煤机能够在刮板输送机铺设的轨道上往复运动并割煤。同时,刮板输送机为液压支架提供铰接点,随着采煤工作面的推进而蜿蜒移动。刮板输送机上煤量的分布除与自身运行的状态有关系,也与采煤机的运行状态密切关联。通过建立刮板输送机上的瞬时煤量和煤量分布模型,得到刮板输送机上实时的煤层厚度。通过调节刮板输送机的速度,达到控制刮板输送机煤层厚度,保持刮板输送机上煤均匀分布的目的。

As the main mechanical and electric equipment on the fully-mechanized mining face,the working status of the shearer and the scraper directly affects the exploitation rate and the economic benefit of enterprises.The scraper provides traction and guidance device for the shearer,so that the shearer moves and cut coal on the track laid by the scraper.Meanwhile,the shearer provides the hinge point for the hydraulic support,and creeps with the advancing of the mining work face.The coal distribution on the scraper conveyor not only relates to its own operation status,but closely to the operation status of the shearer.In the paper,after the model indicating instantaneous coal amount and coal amount distribution on the scraper being established,the real-time thickness of coal seam on the scraper was obtained.With the regulation of the speed of the scraper conveyor,the thickness of coal seam could be controlled,so as to remain the uniform distribution of coal on the scraper.