一字頂(ding)梁是一種重型非鉸接式頂(ding)梁，它(ta)可(ke)與各種類型單體、金(jin)屬支(zhi)柱配合組成金(jin)屬支(zhi)架，供煤礦在水平及緩傾斜回(hui)采(cai)工(gong)作(zuo)面(mian)及機(ji)頭或其它(ta)較大(da)控(kong)(kong)頂(ding)區(qu)(qu)使用(yong)(yong)。它(ta)能長跨度懸(xuan)臂支(zhi)護控(kong)(kong)頂(ding)區(qu)(qu)頂(ding)板，實現工(gong)作(zuo)面(mian)有較大(da)的無(wu)支(zhi)柱支(zhi)護的工(gong)作(zuo)空(kong)間，為(wei)改善勞動(dong)條(tiao)件和采(cai)用(yong)(yong)新(xin)型采(cai)煤機(ji)械及可(ke)彎曲運輸機(ji)創(chuang)造了(le)有利條(tiao)件。
一字頂(ding)(ding)梁是一種重型(xing)非(fei)鉸(jiao)接式頂(ding)(ding)梁，它可與各種類型(xing)單體、金(jin)屬支(zhi)柱配合組成金(jin)屬支(zhi)架，供煤礦在水平及(ji)緩(huan)傾斜(xie)回采(cai)(cai)工(gong)作面及(ji)機頭或(huo)其它較(jiao)(jiao)大控頂(ding)(ding)區使用。它能長跨度懸(xuan)臂支(zhi)護控頂(ding)(ding)區頂(ding)(ding)板，實現工(gong)作面有較(jiao)(jiao)大的無支(zhi)柱支(zhi)護的工(gong)作空間，為改善勞動(dong)條件和采(cai)(cai)用新型(xing)采(cai)(cai)煤機械(xie)及(ji)可彎曲運輸機創造了有利條件。
備注：
1、承載能力為梁(liang)跨距700mm時，梁中(zhong)間集中(zhong)載荷(he)；
2、重(zhong)量含(han)0.7kg/m的焊縫重量(liang)；
3、型號規(gui)格中(zhong)每相(xiang)差200mm增加(jia)一(yi)個規(gui)格。
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