采煤作(zuo)業(ye)已由50年代(dai)的(de)(de)半機(ji)(ji)械化發展到80年代(dai)的(de)(de)綜合(he)(he)機(ji)(ji)械化。綜合(he)(he)機(ji)(ji)械化采煤廣泛應(ying)用淺(qian)截深式雙(shuang)(單)滾(gun)筒(tong)聯合(he)(he)采煤機(ji)(ji)（或(huo)刨煤機(ji)(ji)）、可(ke)彎(wan)曲刮板(ban)輸(shu)送機(ji)(ji)和液壓自移支架(jia)等設備，使回采工作(zuo)面的(de)(de)破碎(sui)落(luo)煤、裝煤、運輸(shu)、支護等環節實(shi)現(xian)全面的(de)(de)綜合(he)(he)機(ji)(ji)械化。雙(shuang)滾(gun)筒(tong)采煤機(ji)(ji)是落(luo)煤機(ji)(ji)械。電(dian)動(dong)(dong)(dong)機(ji)(ji)經(jing)截割部(bu)分(fen)減速機(ji)(ji)把動(dong)(dong)(dong)力(li)傳(chuan)(chuan)遞給螺旋(xuan)滾(gun)筒(tong)落(luo)煤，機(ji)(ji)器的(de)(de)移動(dong)(dong)(dong)靠電(dian)動(dong)(dong)(dong)機(ji)(ji)經(jing)牽(qian)(qian)引(yin)部(bu)分(fen)傳(chuan)(chuan)動(dong)(dong)(dong)裝置(zhi)來實(shi)現(xian)。牽(qian)(qian)引(yin)方式基本上(shang)(shang)有兩(liang)種，即錨(mao)(mao)鏈(lian)(lian)牽(qian)(qian)引(yin)和無(wu)錨(mao)(mao)鏈(lian)(lian)牽(qian)(qian)引(yin)。錨(mao)(mao)鏈(lian)(lian)牽(qian)(qian)引(yin)借助(zhu)牽(qian)(qian)引(yin)部(bu)分(fen)的(de)(de)鏈(lian)(lian)輪與固定在(zai)運輸(shu)機(ji)(ji)上(shang)(shang)的(de)(de)錨(mao)(mao)鏈(lian)(lian)嚙合(he)(he)而實(shi)現(xian)。