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当前位置:网站意甲下注 > 注意事项 > 探究加装挖掘机加长臂引发故障的具体原因

探究加装挖掘机加长臂引发故障的具体原因

文章来源:jsj138.com

发布时间: 2019-6-20 13:56:10

意甲下注 WAJUEJISHANGMIANRUOSHINENGGOUJIAZHUANGWAJUEJIJIAZHANGBEIDEHUA,NEIMEJIUNENGGOUGENGHAODEBANGZHUWAJUEJIJINXINGGONGZUO,SUOYISHUODUIYUWAJUEJILAIJIANGJIAZHUANGWAJUEJIJIAZHANGBEISHIHENYOUBIYAODESHIQING,DANSHIYOUYIXIEWAJUEJIZAIJIAZHUANGLEWAJUEJIJIAZHANGBEIZHIHOU,QUEHUIKAISHICHUXIANYIXIEGUZHANG,NEIZHEIJIUJINGSHISHENMEYUANYINNI?XIAMIANJIULAILEJIEYIXIACHANGJIANDEGUZHANGSUOYINFADEYUANYIN。

 

在更换完控制阀总成的密封后即出现此故障,测后泵收铲斗时的压力为1.5Mpa,远小于正常值的28.5Mpa

【点击查看】挖掘机加长臂加工定做

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一、挖机右行走和铲斗无动作,动臂和斗杆动作慢

意甲下注 ZAIGENGHUANWANKONGZHIFAZONGCHENGDEMIFENGHOUJICHUXIANCIGUZHANG,CEHOUBENGSHOUCHANDOUSHIDEYALIWEI1.5Mpa,YUANXIAOYUZHENGCHANGZHIDE28.5Mpa,ZAIZHUNBEIJIAOHUANLIANGLUDEANQUANFASHI,FAXIANGUZHANGYICEDEANQUANFAWEIZHISHANGWEIYIDUTOUERYUANDUTOUDEWEIZHIQUEANZHUANGLEANQUANFA。JIAOHUANZHENGQUEWEIZHIHOUJIQIZHENGCHANG,YUANLAIWEIXIURENYUANGENGHUANWANKONGZHIFAZONGCHENGDEMIFENGHOU,JIANGGAIZUFADEANQUANFAYUDUTOUWEIZHIZHUANGFAN。

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刚更换了先导泵油封,但更换后工作了十几分钟一直很正常,然后突然就不行了,根据此情况,首先怀疑先导压力不足


二、改装成挖掘机加长臂后,全车慢、无力

GANGGENGHUANLEXIANDAOBENGYOUFENG,DANGENGHUANHOUGONGZUOLESHIJIFENZHONGYIZHIHENZHENGCHANG,RANHOUTURANJIUBUXINGLE,GENJUCIQINGKUANG,SHOUXIANHUAIYIXIANDAOYALIBUZU。JINGCESHIXIANDAOYALIJIDI,JUEDINGFENJIEXIANDAOBENG,DIYIFAXIANXIANDAOBENGSHURUZHOUDEGUJIAYOUFENGYIJICHU,CIYUANYINYOULIANGZHONG:YISHIANZHUANGWENTI,ERSHIGAICHUYALIGUOGAO,JIXUFENJIEFAXIANXIANDAOBENGDEYOUFENGFANGXIANGZHUANGFAN,CICHUCAISHIGUZHANGDEZHENZHENGYUANYIN,DANGGANGKAISHIGONGZUOSHI,GUJIAYOUFENGMEIYOUWANQUANSUNHUAI,RENGKEZHENGCHANGGONGZUO,YINGUJIAYOUFENGZHINENGCHENGSHOUDIYA,GUYOUFENGHENKUAISUNHUAI,DAOZHIXIANDAOYALIYOUCONGSUNHUAICHUXIECHU。

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经检查,一其余动作正常;二提起挖掘机加长臂后斗杆下沉较快,交换斗杆先导管后故障依旧


三、改装成挖掘机加长臂后,发动机起动后斗杆油缸的活塞杆自动缩回,其它动作正常

经检查,一其余动作正常;二提起挖掘机加长臂后斗杆下沉较快,交换斗杆先导管后故障依旧,说明故障在控制阀或斗杆油缸,本着先易后难的原则。拆检控制阀杆,发现阀杆卡在活塞杆缩回位置,用橡胶螂头和铜棒震动后取出阀杆。可见有闪亮铁末,联系斗杆下沉较快,判断故障根源为挖掘机加长臂斗杆缸筒拉伤,拆检斗杆油缸后证实。【具体可参考《挖掘机加长臂动作慢查明缘由才可及时恢复》的相关内容】

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ZONGHEYISHANGQUANBUDENEIRONG,DAJIAYOUMEIYOUDUIWAJUEJIJIAZHANGBEIGUZHANGDEYUANYINYOULEGENGJIASHENRUDELEJIENI。RURUOWOMENFENXIANGDENEIRONGJININTIGONGLEBANGZHU,HUANYINGNINJIXUGUANZHUWOMENDEWANGZHAN,WOMENHUIWEIDAJIACHIXUGENGXINSHIXUNXINXI,NULIWEIMEIYIWEIKEHUTIGONGYOUZHIDEFUWU。

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