【經緯儀(yi)軸(zhou)線】經緯儀(yi)有(you)哪些主要軸(zhou)線 經緯儀(yi)主要軸(zhou)線介紹
經緯儀主(zhu)要(yao)軸(zhou)線介紹
一、 經緯儀有哪些軸
經緯儀主要有:豎軸(zhou)、橫軸(zhou)、望(wang)遠鏡視準軸(zhou)、和照(zhao)準水準管軸(zhou)。
二、應滿足條件
經緯(wei)儀(yi)是根據水(shui)(shui)平(ping)(ping)角和豎(shu)(shu)(shu)(shu)直(zhi)(zhi)(zhi)(zhi)角的測(ce)角原(yuan)理制造的,當(dang)水(shui)(shui)準(zhun)管(guan)器泡居中時(shi),儀(yi)器旋(xuan)轉軸(zhou)(zhou)豎(shu)(shu)(shu)(shu)直(zhi)(zhi)(zhi)(zhi)、水(shui)(shui)平(ping)(ping)度盤水(shui)(shui)平(ping)(ping),則要求(qiu)水(shui)(shui)準(zhun)管(guan)軸(zhou)(zhou)垂直(zhi)(zhi)(zhi)(zhi)豎(shu)(shu)(shu)(shu)軸(zhou)(zhou)。測(ce)水(shui)(shui)平(ping)(ping)角要求(qiu)望(wang)遠鏡繞橫(heng)軸(zhou)(zhou)旋(xuan)轉為一個豎(shu)(shu)(shu)(shu)直(zhi)(zhi)(zhi)(zhi)面,就必須保證(zheng)視準(zhun)軸(zhou)(zhou)垂直(zhi)(zhi)(zhi)(zhi)橫(heng)軸(zhou)(zhou)。另一點保證(zheng)豎(shu)(shu)(shu)(shu)軸(zhou)(zhou)豎(shu)(shu)(shu)(shu)直(zhi)(zhi)(zhi)(zhi)時(shi),橫(heng)軸(zhou)(zhou)水(shui)(shui)平(ping)(ping),則要求(qiu)橫(heng)軸(zhou)(zhou)垂直(zhi)(zhi)(zhi)(zhi)豎(shu)(shu)(shu)(shu)軸(zhou)(zhou)。照準(zhun)目標使(shi)用豎(shu)(shu)(shu)(shu)絲,只(zhi)有橫(heng)軸(zhou)(zhou)水(shui)(shui)平(ping)(ping)時(shi)豎(shu)(shu)(shu)(shu)絲豎(shu)(shu)(shu)(shu)直(zhi)(zhi)(zhi)(zhi),則要求(qiu)十字絲豎(shu)(shu)(shu)(shu)絲垂直(zhi)(zhi)(zhi)(zhi)橫(heng)軸(zhou)(zhou)。為使(shi)測(ce)角達(da)到(dao)一定精度,儀(yi)器其它狀態也應達(da)到(dao)一定標準(zhun)。綜上所述(shu),經緯(wei)儀(yi)應滿足的基(ji)本幾(ji)何(he)關系(xi)如圖所示:
1、照準部水準管軸(zhou)應垂(chui)直于豎(shu)軸(zhou);LL⊥VV
2、十字絲豎絲應垂(chui)直于橫軸(zhou);
3、視準軸應垂(chui)直于橫軸;CC⊥HH
4、橫軸應垂直于豎(shu)軸;HH⊥VV
5、豎(shu)盤(pan)指標(biao)應處于正確位置;
6、光學對中(zhong)(zhong)器視準軸應該與豎軸中(zhong)(zhong)心線重合。