DFB型(xing)(xing)頂(ding)(ding)梁(liang)(liang)是(shi)一種重型(xing)(xing)非(fei)鉸接式頂(ding)(ding)梁(liang)(liang)，DFB型(xing)(xing)金屬長梁(liang)(liang)可(ke)與各種類型(xing)(xing)單體、金屬支柱配合組成金屬支架(jia)，供煤礦(kuang)在水平及緩傾斜回采工(gong)作(zuo)(zuo)面及機頭或其(qi)它(ta)較(jiao)大控(kong)頂(ding)(ding)區使(shi)用(yong)。它(ta)能長跨(kua)度懸臂支護控(kong)頂(ding)(ding)區頂(ding)(ding)板，實現(xian)工(gong)作(zuo)(zuo)面有較(jiao)大的無支柱支護的工(gong)作(zuo)(zuo)空間，為改善勞動條(tiao)件和采用(yong)新型(xing)(xing)采煤機械及可(ke)彎曲(qu)運(yun)輸(shu)機創造了有利條(tiao)件。