起(qi)重(zhong)機(ji)的(de)四(si)個(ge)支(zhi)腿(tui)是(shi)保(bao)證(zheng)起(qi)重(zhong)機(ji)穩(wen)定(ding)性(xing)的(de)關(guan)鍵(jian),作(zuo)業(ye)時(shi)要(yao)利(li)用(yong)水(shui)平(ping)氣(qi)泡(pao)將(jiang)支(zhi)承(cheng)回(hui)轉(zhuan)麵(mian)調(tiao)平(ping),如(ru)地(di)麵(mian)鬆(song)軟(ruan)不(bu)平(ping)或(huo)在(zai)斜(xie)坡(po)上(shang)工(gong)作(zuo)時(shi),一(yi)定(ding)要(yao)在(zai)支(zhi)腿(tui)墊(dian)盤(pan)下(xia)墊(dian)以(yi)木(mu)板(ban)或(huo)鐵(tie)板(ban),也(ye)可(ke)以(yi)在(zai)支(zhi)腿(tui)墊(dian)盤(pan)下(xia)備(bei)有(you)定(ding)型(xing)規(gui)格(ge)的(de)鐵(tie)板(ban),將(jiang)支(zhi)腿(tui)位(wei)置(zhi)調(tiao)整(zheng)好(hao)。為(wei)了(le)防(fang)止(zhi)液(ye)壓(ya)係(xi)統(tong)出(chu)現(xian)故(gu)障(zhang),發(fa)生(sheng)事(shi)故(gu),應(ying)在(zai)調(tiao)平(ping)的(de)支(zhi)腿(tui)下(xia)墊(dian)上(shang)保(bao)險(xian)枕(zhen)木(mu),以(yi)確(que)保(bao)安(an)全(quan)作(zuo)業(ye)。
起重機的穩定性,隨起吊方向的不同而不同。起重能力也隨之不同;在zai穩wen定ding性xing較jiao好hao的de方fang向xiang能neng起qi吊diao額e定ding荷he載zai,如ru轉zhuan到dao穩wen定ding性xing差cha的de方fang向xiang就jiu會hui出chu現xian超chao載zai,有you傾qing翻fan的de可ke能neng。有you的de起qi重zhong機ji的de各ge個ge不bu同tong起qi吊diao方fang向xiang的de起qi重zhong量liang,有you特te殊shu規gui定ding。但dan在zai一yi般ban情qing況kuang下xia多duo數shu汽qi車che式shi起qi重zhong機ji,在zai車che前qian作zuo業ye區qu是shi不bu允yun許xu吊diao裝zhuang作zuo業ye的de。因yin此ci,在zai使shi用yong汽qi車che式shi起qi重zhong機ji時shi,要yao認ren真zhen按an照zhao機ji車che說shuo明ming書shu規gui定ding執zhi行xing。
由you於yu起qi重zhong機ji的de臂bi杆gan多duo為wei矩ju形xing的de箱xiang形xing結jie構gou,它ta受shou力li後hou側ce向xiang的de穩wen定ding性xing很hen差cha,所suo以yi在zai操cao作zuo中zhong要yao嚴yan禁jin側ce拉la,防fang止zhi臂bi杆gan側ce向xiang受shou力li,因yin此ci,在zai吊diao裝zhuang柱zhu子zi作zuo業ye時shi,不bu宜yi采cai用yong滑hua升sheng起qi吊diao,因yin柱zhu腳jiao的de滑hua行xing阻zu力li將jiang使shi臂bi杆gan側ce向xiang受shou力li產chan生sheng變bian形xing,是shi不bu安an全quan的de。為wei了le保bao證zheng起qi重zhong機ji的de安an全quan作zuo業ye,通tong常chang在zai起qi吊diao較jiao重zhong的de柱zhu子zi時shi,柱zhu根gen部bu輔fu加jia一yi部bu起qi重zhong機ji進jin行xing遞di送song,以yi減jian少shao柱zhu子zi起qi吊diao時shi柱zhu腳jiao與yu地di麵mian的de阻zu力li。
汽(qi)車(che)式(shi)起(qi)重(zhong)機(ji)在(zai)用(yong)較(jiao)長(chang)臂(bi)杆(gan)起(qi)吊(diao)構(gou)件(jian)時(shi),臂(bi)杆(gan)要(yao)發(fa)生(sheng)一(yi)定(ding)程(cheng)度(du)的(de)向(xiang)前(qian)自(zi)然(ran)撓(nao)度(du),在(zai)確(que)定(ding)負(fu)荷(he)狀(zhuang)態(tai)後(hou)的(de)工(gong)作(zuo)考(kao)慮(lv)臂(bi)杆(gan)的(de)縱(zong)向(xiang)撓(nao)度(du)回(hui)轉(zhuan)時(shi)會(hui)產(chan)生(sheng)離(li)心(xin)力(li)以(yi)防(fang)超(chao)載(zai)。旋(xuan)轉(zhuan)不(bu)要(yao)過(guo)快(kuai)荷(he)載(zai)將(jiang)有(you)向(xiang)外(wai)飛(fei)出(chu)的(de)趨(qu)勢(shi),使(shi)幅(fu)度(du)增(zeng)大(da),起(qi)重(zhong)能(neng)力(li)下(xia)降(jiang),穩(wen)定(ding)性(xing)低(di),傾(qing)覆(fu)的(de)危(wei)險(xian)性(xing)就(jiu)大(da)。
起重機在吊重物時,通常自由下降隻用於起重鉤空鉤下落,例如用於起吊重物下降時,其重量應小於額定負荷的1/3~1/5。yinkuaisuxiajiangshifuhezaizhonglijiasududezuoyongxia,chongjilijiada,duizhituijidaliangyouhendadechongji。ruguozhongtuturantingzhi,qizhongjizaizhonglijiasuduzuoyongxiashiquwending,huizaochengbiganzheduan,suoyiyaoyangezhangwoziyouxiajiang。yinci,diaozhongluoyueshiyongdonglixiajiangkeyibaozhengjichedeanquanzuoye。
汽(qi)車(che)式(shi)起(qi)重(zhong)機(ji)的(de)安(an)全(quan)裝(zhuang)置(zhi)有(you)力(li)矩(ju)限(xian)製(zhi)器(qi)和(he)過(guo)卷(juan)揚(yang)裝(zhuang)置(zhi),其(qi)功(gong)能(neng)與(yu)作(zuo)用(yong)前(qian)麵(mian)已(yi)講(jiang)過(guo)。它(ta)還(hai)裝(zhuang)有(you)水(shui)平(ping)氣(qi)泡(pao)來(lai)檢(jian)查(zha)起(qi)重(zhong)機(ji)的(de)傾(qing)斜(xie)程(cheng)度(du),它(ta)是(shi)保(bao)證(zheng)車(che)身(shen)水(shui)平(ping)度(du)的(de)測(ce)量(liang)儀(yi)器(qi),能(neng)防(fang)止(zhi)起(qi)重(zhong)機(ji)水(shui)平(ping)傾(qing)斜(xie)度(du)超(chao)限(xian)後(hou)引(yin)起(qi)傾(qing)翻(fan)。在(zai)起(qi)重(zhong)機(ji)的(de)支(zhi)腿(tui)完(wan)全(quan)伸(shen)出(chu)後(hou),機(ji)身(shen)應(ying)保(bao)證(zheng)水(shui)平(ping)。
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