金(jin)屬(shu)頂(ding)(ding)梁(liang)(liang)是用于煤(mei)礦采(cai)煤(mei)工(gong)作面、位于單體液壓(ya)支(zhi)柱(zhu)之(zhi)上頂(ding)(ding)板之(zhi)下、傳遞頂(ding)(ding)板壓(ya)力的(de)(de)支(zhi)撐梁(liang)(liang)。是煤(mei)礦采(cai)煤(mei)工(gong)作面支(zhi)護項板用的(de)(de)頂(ding)(ding)梁(liang)(liang)。按(an)(an)連接方(fang)式(shi)金(jin)屬(shu)頂(ding)(ding)梁(liang)(liang)可分為鉸接頂(ding)(ding)梁(liang)(liang)和(he)非鉸接頂(ding)(ding)梁(liang)(liang)兩種。按(an)(an)頂(ding)(ding)梁(liang)(liang)梁(liang)(liang)體截面形(xing)狀金(jin)屬(shu)頂(ding)(ding)梁(liang)(liang)可分為A型(xing)、B型(xing)、C型(xing)、D型(xing)頂(ding)(ding)梁(liang)(liang)四種。金(jin)屬(shu)頂(ding)(ding)梁(liang)(liang)可與各(ge)種類型(xing)單體金(jin)屬(shu)支(zhi)柱(zhu)配合組成(cheng)金(jin)屬(shu)支(zhi)架，供煤(mei)礦在(zai)水平(ping)及緩傾斜回采(cai)工(gong)作面支(zhi)護的(de)(de)一種高強(qiang)度頂(ding)(ding)梁(liang)(liang)由于這(zhe)種頂(ding)(ding)梁(liang)(liang)能(neng)懸壁支(zhi)護工(gong)作面，煤(mei)壁面前邊的(de)(de)運輸機道上面的(de)(de)頂(ding)(ding)板，使煤(mei)壁與支(zhi)柱(zhu)間有較大的(de)(de)支(zhi)護空(kong)間。
金屬頂(ding)(ding)梁(liang)(liang)是用于(yu)煤礦采煤工(gong)作面(mian)(mian)、位于(yu)單體液(ye)壓(ya)支(zhi)柱之(zhi)上頂(ding)(ding)板之(zhi)下、傳遞頂(ding)(ding)板壓(ya)力的(de)支(zhi)撐梁(liang)(liang)。是煤礦采煤工(gong)作面(mian)(mian)支(zhi)護項板用的(de)頂(ding)(ding)梁(liang)(liang)。按連接方式金屬頂(ding)(ding)梁(liang)(liang)可(ke)分(fen)為鉸接頂(ding)(ding)梁(liang)(liang)和(he)非鉸接頂(ding)(ding)梁(liang)(liang)兩種。按頂(ding)(ding)梁(liang)(liang)梁(liang)(liang)體截(jie)面(mian)(mian)形狀金屬頂(ding)(ding)梁(liang)(liang)可(ke)分(fen)為A型、B型、C型、D型頂梁(liang)(liang)四種。金(jin)屬(shu)頂梁(liang)(liang)可(ke)與各種類型單(dan)體金(jin)屬(shu)支柱(zhu)配(pei)合(he)組成金(jin)屬(shu)支架，供煤礦在水(shui)平(ping)及緩傾斜回(hui)采工作面(mian)支護的一種高強度頂梁(liang)(liang)由于這種頂梁(liang)(liang)能懸壁支護工作面(mian)，煤壁面(mian)前邊(bian)的運(yun)輸機道上面(mian)的頂板，使煤壁與支柱(zhu)間(jian)有(you)較(jiao)大的支護空間(jian)。
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