（一）、結構(gou)特(te)點及功能

QZ系列球型支(zhi)座是由(you)上支(zhi)座板(ban)(ban)(ban)、下支(zhi)座板(ban)(ban)(ban)、凸形中(zhong)(zhong)間(jian)(jian)板(ban)(ban)(ban)及兩(liang)塊(kuai)不同(tong)形狀的(de)聚四氟乙烯板(ban)(ban)(ban)組成(cheng)。下支(zhi)座板(ban)(ban)(ban)中(zhong)(zhong)間(jian)(jian)為(wei)一凹形球面，同(tong)凸形中(zhong)(zhong)間(jian)(jian)包相對應，兩(liang)者之(zhi)間(jian)(jian)有一弧形四氟板(ban)(ban)(ban)，通過求美棉與滑動來滿足(zu)梁端的(de)轉(zhuan)動；上座板(ban)(ban)(ban)上的(de)不銹鋼板(ban)(ban)(ban)與中(zhong)(zhong)間(jian)(jian)鋼板(ban)(ban)(ban)上的(de)另一四氟板(ban)(ban)(ban)組成(cheng)第二(er)滑動面，完(wan)成(cheng)梁體因溫差諸多原因所(suo)產(chan)生(sheng)的(de)伸(shen)縮位(wei)移(yi)。

QZ球型支(zhi)座以傳力可靠，各向(xiang)轉動性能一致 轉動靈活的(de)特(te)點(dian)(dian)，不(bu)僅具備盆式(shi)橡膠支(zhi)座承載能力大(da)，水平位移大(da)等(deng)(deng)特(te)點(dian)(dian)，而且能更好(hao)地適應(ying)大(da)轉角的(de)需要，適用(yong)(yong)于寬橋(qiao)、曲(qu)線橋(qiao)。由于承壓部件(jian)不(bu)使用(yong)(yong)橡膠件(jian)，不(bu)存(cun)在橡膠低(di)溫(wen)脆性等(deng)(deng)影響，因此特(te)別適用(yong)(yong)于低(di)溫(wen)地區。