DFB型(xing)頂(ding)梁是一種(zhong)重型(xing)非鉸接(jie)式頂(ding)梁，DFB型(xing)金(jin)屬(shu)(shu)長梁可與各種(zhong)類型(xing)單體、金(jin)屬(shu)(shu)支(zhi)柱配合組成金(jin)屬(shu)(shu)支(zhi)架，供(gong)煤礦在水平及(ji)(ji)緩傾斜回采(cai)工(gong)作(zuo)(zuo)面及(ji)(ji)機頭或(huo)其它較大控(kong)頂(ding)區使用。它能長跨度懸臂支(zhi)護控(kong)頂(ding)區頂(ding)板，實現(xian)工(gong)作(zuo)(zuo)面有較大的無支(zhi)柱支(zhi)護的工(gong)作(zuo)(zuo)空間(jian)，為改善勞動(dong)條(tiao)件和采(cai)用新型(xing)采(cai)煤機械及(ji)(ji)可彎(wan)曲(qu)運(yun)輸機創(chuang)造(zao)了有利條(tiao)件。