金(jin)(jin)屬(shu)(shu)(shu)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)是(shi)用于煤(mei)(mei)礦(kuang)采(cai)(cai)煤(mei)(mei)工作面(mian)、位于單體(ti)液壓支(zhi)(zhi)(zhi)柱(zhu)之(zhi)上頂(ding)(ding)(ding)(ding)板(ban)之(zhi)下、傳遞頂(ding)(ding)(ding)(ding)板(ban)壓力的(de)支(zhi)(zhi)(zhi)撐(cheng)梁(liang)(liang)(liang)(liang)。是(shi)煤(mei)(mei)礦(kuang)采(cai)(cai)煤(mei)(mei)工作面(mian)支(zhi)(zhi)(zhi)護項板(ban)用的(de)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)。按連接(jie)方式金(jin)(jin)屬(shu)(shu)(shu)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)可(ke)分為(wei)鉸接(jie)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)和非鉸接(jie)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)兩(liang)種。按頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)梁(liang)(liang)(liang)(liang)體(ti)截面(mian)形狀金(jin)(jin)屬(shu)(shu)(shu)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)可(ke)分為(wei)A型(xing)、B型(xing)、C型(xing)、D型(xing)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)四(si)種。金(jin)(jin)屬(shu)(shu)(shu)頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)可(ke)與(yu)各種類型(xing)單體(ti)金(jin)(jin)屬(shu)(shu)(shu)支(zhi)(zhi)(zhi)柱(zhu)配合組成金(jin)(jin)屬(shu)(shu)(shu)支(zhi)(zhi)(zhi)架，供煤(mei)(mei)礦(kuang)在水平(ping)及(ji)緩傾(qing)斜回采(cai)(cai)工作面(mian)支(zhi)(zhi)(zhi)護的(de)一種高(gao)強度頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)由于這種頂(ding)(ding)(ding)(ding)梁(liang)(liang)(liang)(liang)能懸壁支(zhi)(zhi)(zhi)護工作面(mian)，煤(mei)(mei)壁面(mian)前(qian)邊的(de)運輸機道(dao)上面(mian)的(de)頂(ding)(ding)(ding)(ding)板(ban)，使(shi)煤(mei)(mei)壁與(yu)支(zhi)(zhi)(zhi)柱(zhu)間有較(jiao)大的(de)支(zhi)(zhi)(zhi)護空間。