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流動式起重機主要有汽車起重機、輪胎起重機和履帶式起重機,它們的特性簡要介紹如下。
1.汽車起重機
汽qi車che起qi重zhong機ji使shi用yong汽qi車che底di盤pan,具ju有you汽qi車che的de行xing駛shi通tong過guo性xing能neng,行xing駛shi速su度du高gao。缺que點dian是shi運yun行xing不bu能neng負fu載zai,起qi重zhong時shi必bi須xu打da支zhi腿tui。但dan因yin其qi機ji動dong靈ling活huo,可ke快kuai速su轉zhuan移yi的de特te點dian,使shi之zhi成cheng為wei我wo國guo流liu動dong式shi起qi重zhong機ji中zhong使shi用yong量liang最zui多duo的de起qi重zhong機ji。
2.輪胎起重機
輪lun胎tai起qi重zhong機ji采cai用yong專zhuan門men設she計ji的de輪lun胎tai底di盤pan,輪lun距ju較jiao寬kuan,穩wen定ding性xing好hao,可ke前qian後hou左zuo右you四si麵mian作zuo業ye,在zai平ping坦tan的de地di麵mian上shang可ke不bu用yong支zhi腿tui負fu載zai行xing駛shi。在zai國guo外wai,輪lun胎tai起qi重zhong機ji特te別bie是shi越yue野ye輪lun胎tai起qi重zhong機ji使shi用yong越yue來lai越yue廣guang泛fan,大da有you取qu代dai汽qi車che起qi重zhong機ji的de趨qu勢shi。
3.履帶式起重機
履帶式起重機是用履帶底盤,靠履帶裝置行走的起重機。與輪式起重機相比有其突出的特點:履帶與地麵接觸麵積大、比活小,可在鬆軟、泥濘地麵上作業;牽引係數高、爬坡度大,可在崎嶇不平的場地上行駛;履帶支承麵寬大,穩定性好,一般不需要設置支腿裝置。弱點是笨重,行駛速度慢,對路麵有損壞作用,製造成本較高。
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