一、扳手是干什么用的
扳手是一種常用(yong)(yong)的安裝與拆卸工(gong)具(ju),是利用(yong)(yong)杠桿(gan)原理擰轉螺栓、螺釘、螺母(mu)(mu)和其(qi)他(ta)螺紋緊持螺栓或螺母(mu)(mu)的開口或套(tao)孔固件的手工(gong)工(gong)具(ju)。扳手通(tong)常用(yong)(yong)碳素(su)或合金材料的結構鋼制(zhi)造。
二、扳手種類有哪些
1、呆扳(ban)手:呆扳(ban)手是(shi)一(yi)(yi)種通用工具,一(yi)(yi)端或兩端制有固定尺寸的開口,主要用于擰轉一(yi)(yi)定尺寸的螺母或螺栓。
2、梅(mei)花(hua)扳手(shou):梅(mei)花(hua)扳手(shou)兩(liang)端(duan)具有帶六角(jiao)孔(kong)或十二角(jiao)孔(kong)的工(gong)作端(duan),適用于工(gong)作空間狹(xia)小,不能使用普通扳手(shou)的場合
3、兩用扳手(shou):兩用扳手(shou)一端與單(dan)頭呆扳手(shou)相(xiang)同(tong),另一端與梅花(hua)扳手(shou)相(xiang)同(tong),兩端擰轉相(xiang)同(tong)規格的螺(luo)栓或螺(luo)母(mu)。
4、活動(dong)扳(ban)(ban)手:活動(dong)扳(ban)(ban)手簡稱活扳(ban)(ban)手,其開口寬(kuan)度(du)可在一(yi)定(ding)范(fan)圍內調節(jie),是用來緊固和起松不(bu)同(tong)規格的螺母(mu)和螺栓的一(yi)種(zhong)工具。
5、鉤形扳手:鉤形扳手又稱月牙形扳手,主要用于擰轉厚度受限制的扁螺母。這類扳手品牌產品比較(jiao)少見,在汽車(che)修理上用的比較(jiao)多。
6、套(tao)筒(tong)(tong)扳手(shou)(shou):套(tao)筒(tong)(tong)扳手(shou)(shou)由多個(ge)帶六角孔或十(shi)二角孔的(de)套(tao)筒(tong)(tong)構成,并(bing)配有手(shou)(shou)柄(bing)、接桿等多種附件(jian)。
7、內(nei)(nei)六(liu)(liu)角扳手(shou):內(nei)(nei)六(liu)(liu)角扳手(shou)是(shi)成L形的六(liu)(liu)角棒狀扳手(shou),專用(yong)于(yu)擰轉內(nei)(nei)六(liu)(liu)角螺釘(ding),在(zai)拆(chai)卸(xie)機床(chuang)、車輛、機械(xie)設備上(shang)用(yong)的比較多。
8、扭(niu)力扳手(shou):扭(niu)力扳手(shou)又叫扭(niu)矩扳手(shou)、扭(niu)力扳手(shou)、扭(niu)矩可(ke)(ke)調(diao)扳手(shou),可(ke)(ke)以設定扭(niu)矩,并且扭(niu)矩可(ke)(ke)調(diao),主要用于緊固螺(luo)栓。
9、電動(dong)扳(ban)(ban)(ban)(ban)手(shou):電動(dong)扳(ban)(ban)(ban)(ban)手(shou)是以電源或電池為(wei)動(dong)力的扳(ban)(ban)(ban)(ban)手(shou),主要分為(wei)沖擊扳(ban)(ban)(ban)(ban)手(shou)、扭剪扳(ban)(ban)(ban)(ban)手(shou)、定扭矩扳(ban)(ban)(ban)(ban)手(shou)、轉角扳(ban)(ban)(ban)(ban)手(shou)、角向扳(ban)(ban)(ban)(ban)手(shou)、液壓扳(ban)(ban)(ban)(ban)手(shou)、扭力扳(ban)(ban)(ban)(ban)手(shou)等類型。
三、各類扳手的選用原則是什么
在拆卸螺(luo)栓(shuan)時(shi),應按照“先套筒扳(ban)手(shou)、后(hou)梅花(hua)扳(ban)手(shou)、再開口(kou)扳(ban)手(shou)、最后(hou)活動(dong)扳(ban)手(shou)”的(de)選(xuan)用(yong)原則進(jin)行(xing)選(xuan)取(qu)。在選(xuan)用(yong)扳(ban)手(shou)時(shi),要(yao)注意(yi)扳(ban)手(shou)的(de)尺寸(cun),尺寸(cun)是指它所能擰動(dong)的(de)螺(luo)栓(shuan)或螺(luo)母正對(dui)面間的(de)距離。