（一(yi)）、結構特點及功(gong)能(neng)

QZ系列球型支(zhi)座是由(you)上(shang)支(zhi)座板(ban)(ban)(ban)(ban)、下支(zhi)座板(ban)(ban)(ban)(ban)、凸形(xing)中(zhong)間板(ban)(ban)(ban)(ban)及(ji)兩塊不同形(xing)狀(zhuang)的(de)(de)聚四氟乙烯板(ban)(ban)(ban)(ban)組成。下支(zhi)座板(ban)(ban)(ban)(ban)中(zhong)間為一凹形(xing)球面，同凸形(xing)中(zhong)間包相(xiang)對應，兩者之間有一弧形(xing)四氟板(ban)(ban)(ban)(ban)，通過(guo)求美棉與滑動(dong)來滿足(zu)梁端的(de)(de)轉動(dong)；上(shang)座板(ban)(ban)(ban)(ban)上(shang)的(de)(de)不銹鋼板(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)組成第二滑動(dong)面，完(wan)成梁體(ti)因溫差(cha)諸多原因所產生的(de)(de)伸縮位(wei)移。

QZ球型支座(zuo)(zuo)以(yi)傳力(li)可靠，各向轉動性能一致 轉動靈活(huo)的(de)特點，不(bu)僅具備(bei)盆式橡膠(jiao)支座(zuo)(zuo)承載能力(li)大，水(shui)平位(wei)移大等(deng)特點，而且能更好地(di)適(shi)應(ying)大轉角的(de)需要，適(shi)用于寬橋(qiao)、曲(qu)線橋(qiao)。由于承壓部件(jian)不(bu)使用橡膠(jiao)件(jian)，不(bu)存在(zai)橡膠(jiao)低溫脆(cui)性等(deng)影響，因此特別適(shi)用于低溫地(di)區(qu)。