（一(yi)）、結構特(te)點及功(gong)能

QZ系列球型支座(zuo)是由上(shang)支座(zuo)板(ban)(ban)(ban)(ban)、下(xia)支座(zuo)板(ban)(ban)(ban)(ban)、凸形(xing)(xing)中(zhong)間板(ban)(ban)(ban)(ban)及(ji)兩塊不(bu)(bu)同形(xing)(xing)狀的(de)(de)聚(ju)四氟乙(yi)烯板(ban)(ban)(ban)(ban)組成。下(xia)支座(zuo)板(ban)(ban)(ban)(ban)中(zhong)間為一凹形(xing)(xing)球面，同凸形(xing)(xing)中(zhong)間包相對(dui)應，兩者(zhe)之間有一弧形(xing)(xing)四氟板(ban)(ban)(ban)(ban)，通過求美(mei)棉與滑(hua)(hua)動(dong)來(lai)滿(man)足梁(liang)端的(de)(de)轉動(dong)；上(shang)座(zuo)板(ban)(ban)(ban)(ban)上(shang)的(de)(de)不(bu)(bu)銹鋼板(ban)(ban)(ban)(ban)與中(zhong)間鋼板(ban)(ban)(ban)(ban)上(shang)的(de)(de)另一四氟板(ban)(ban)(ban)(ban)組成第二(er)滑(hua)(hua)動(dong)面，完成梁(liang)體因溫差諸多原因所產生的(de)(de)伸縮位移。

QZ球型支(zhi)座(zuo)以傳力(li)可靠，各向轉(zhuan)(zhuan)動性能一致 轉(zhuan)(zhuan)動靈活(huo)的(de)(de)特點(dian)，不僅具備(bei)盆式(shi)橡膠(jiao)支(zhi)座(zuo)承載能力(li)大(da)，水平位移大(da)等特點(dian)，而(er)且能更好地(di)適應大(da)轉(zhuan)(zhuan)角的(de)(de)需要，適用于寬橋(qiao)(qiao)、曲線橋(qiao)(qiao)。由于承壓(ya)部件(jian)不使用橡膠(jiao)件(jian)，不存在(zai)橡膠(jiao)低溫(wen)脆性等影響(xiang)，因此特別適用于低溫(wen)地(di)區。