千(Qian)斤(Jin)顶(Ding)是(Shi)是(Shi)指(Zhi)用(Yong)刚(Gang)性(Xing)顶(Ding)举(Ju)件(Jian)作(Zuo)为(Wei)工(Gong)作(Zuo)装(Zhuang)置(Zhi),(?)通(Tong)过(Guo)顶(Ding)部(Bu)托(Tuo)座(Zuo)或(Huo)底(Di)部(Bu)托(Tuo)爪(Zhua)的(De)小(Xiao)行(Xing)程(Cheng)内(Nei)顶(Ding)开(Kai)重(Zhong)物(Wu)的(De)轻(Qing)小(Xiao)起(Qi)重(Zhong)设(She)备(Bei)。(?)千(Qian)斤(Jin)顶(Ding)主(Zhu)要(Yao)用(Yong)于(Yu)厂(Chang)矿(Kuang)、(?)交(Jiao)通(Tong)运(Yun)输(Shu)等(Deng)部(Bu)门(Men)作(Zuo)为(Wei)车(Che)辆(Liang)修(Xiu)理(Li)及(Ji)其(Qi)它(Ta)起(Qi)重(Zhong)、(?)支(Zhi)撑(Cheng)等(Deng)工(Gong)作(Zuo)。(?)其(Qi)结(Jie)构(Gou)轻(Qing)巧(Qiao)坚(Jian)固(Gu)、(?)灵(Ling)活(Huo)可(Ke)靠(Kao),(?)一(Yi)人(Ren)即(Ji)可(Ke)携(Xie)带(Dai)和(He)操(Cao)作(Zuo)。(?) (?) (?)
千(Qian)斤(Jin)顶(Ding)分(Fen)为(Wei)有(You)机(Ji)械(Xie)千(Qian)斤(Jin)顶(Ding)和(He)液(Ye)压(Ya)千(Qian)斤(Jin)顶(Ding)等(Deng),(?)原(Yuan)理(Li)各(Ge)有(You)不(Bu)同(Tong)。(?)从(Cong)原(Yuan)理(Li)上(Shang)来(Lai)说(Shuo),(?)液(Ye)压(Ya)传(Chuan)动(Dong)所(Suo)基(Ji)于(Yu)的(De)基(Ji)本(Ben)的(De)原(Yuan)理(Li)就(Jiu)是(Shi)帕(Pa)斯(Si)卡(Ka)定(Ding)律(Lu),(?)也(Ye)就(Jiu)是(Shi)说(Shuo),(?)液(Ye)体(Ti)各(Ge)处(Chu)的(De)压(Ya)强(Qiang)是(Shi)一(Yi)致(Zhi)的(De)。(?)这(Zhe)样(Yang),(?)在(Zai)平(Ping)衡(Heng)的(De)系(Xi)统(Tong)中(Zhong),(?)比(Bi)较(Jiao)小(Xiao)的(De)活(Huo)塞(Sai)上(Shang)面(Mian)施(Shi)加(Jia)的(De)压(Ya)力(Li)比(Bi)较(Jiao)小(Xiao),(?)而(?)大(Da)的(De)活(Huo)塞(Sai)上(Shang)施(Shi)加(Jia)的(De)压(Ya)力(Li)也(Ye)比(Bi)较(Jiao)大(Da),(?)这(Zhe)样(Yang)能(Neng)够(Gou)保(Bao)持(Chi)液(Ye)体(Ti)的(De)静(Jing)止(Zhi)。(?)所(Suo)以(Yi)通(Tong)过(Guo)液(Ye)体(Ti)的(De)传(Chuan)递(Di),(?)可(Ke)以(Yi)得(De)到(Dao)不(Bu)同(Tong)端(Duan)上(Shang)不(Bu)同(Tong)的(De)压(Ya)力(Li),(?)就(Jiu)可(Ke)以(Yi)达(Da)到(Dao)一(Yi)个(Ge)变(Bian)换(Huan)的(De)目(Mu)的(De)。(?) (?) (?)
螺(Luo)旋(Xuan)下(Xia)斤(Jin)顶(Ding)以(Yi)往(Wang)复(Fu)扳(Ban)动(Dong)手(Shou)柄(Bing),(?)拔(Ba)爪(Zhua)即(Ji)推(Tui)动(Dong)棘(Ji)轮(Lun)间(Jian)隙(Xi)回(Hui)转(Zhuan),(?)小(Xiao)伞(San)齿(Chi)轮(Lun)带(Dai)动(Dong)大(Da)伞(San)齿(Chi)轮(Lun),(?)使(Shi)举(Ju)重(Zhong)螺(Luo)杆(Gan)旋(Xuan)转(Zhuan),(?)从(Cong)而(?)使(Shi)升(Sheng)降(Jiang)套(Tao)筒(Tong)获(Huo)得(De)起(Qi)升(Sheng)或(Huo)下(Xia)降(Jiang),(?)而(?)达(Da)到(Dao)起(Qi)重(Zhong)拉(La)力(Li)的(De)功(Gong)能(Neng),(?)但(Dan)不(Bu)如(Ru)液(Ye)压(Ya)千(Qian)斤(Jin)顶(Ding)简(Jian)易(Yi)。(?)对(Dui)于(Yu)液(Ye)压(Ya)支(Zhi)架(Jia)千(Qian)斤(Jin)顶(Ding)密(Mi)封(Feng)性(Xing)问(Wen)题(Ti)信(Xin)任(Ren)不(Bu)少(Shao)液(Ye)压(Ya)千(Qian)斤(Jin)顶(Ding)运(Yun)用(Yong)方(Fang)都(Du)很(Hen)关(Guan)心(Xin),一(Yi)个(Ge)液(Ye)压(Ya)千(Qian)斤(Jin)顶(Ding)的(De)品(Pin)性(Xing)的(De)好(Hao)坏(Huai),液(Ye)压(Ya)支(Zhi)架(Jia)千(Qian)斤(Jin)顶(Ding)密(Mi)封(Feng)功(Gong)能(Neng)是(Shi)一(Yi)个(Ge)紧(Jin)要(Yao)的(De)指(Zhi)标(Biao)。(?)