汽車起重機增設自動卸荷油路

起吊質量在16tyixiadeqicheqizhongjiyibandoubuanzhuanglijuxianzhiqi，zhianzhuangqizhiliangxianshiqiheqishenggaoduxianweiqi。qizhong，qishenggaoduxianweiqidezuoyongshizaidiaogouqishengpengdaoxianweiqizhongchuishi，shigaoduxianweiqidexingchengkaiguanjietongqizhongjijiashishineideshengguangbaojingzhuangzhibingfachubaojingxinhao，tishiqizhongjicaozuorenyuanlijitingzhiqishengcaozuo，qidaoanquanbaohuzuoyong。

這種高度限位控製方式存在的主要問題是：高gao度du限xian位wei器qi與yu起qi升sheng液ye壓ya油you路lu之zhi間jian不bu存cun在zai直zhi接jie的de控kong製zhi關guan係xi，而er是shi由you起qi重zhong機ji操cao作zuo人ren員yuan根gen據ju報bao警jing信xin號hao來lai停ting止zhi起qi重zhong機ji的de起qi升sheng操cao作zuo。但dan作zuo業ye現xian場chang環huan境jing差cha，噪zao聲sheng大da
，再zai加jia上shang手shou動dong控kong製zhi
，易yi出chu現xian吊diao鉤gou起qi升sheng到dao限xian位wei高gao度du後hou繼ji續xu起qi升sheng的de現xian象xiang，極ji易yi造zao成cheng事shi故gu。為wei了le避bi免mian發fa生sheng事shi故gu
，我wo們men在zai1台起重機的卷揚起升油路加裝1條先導式溢流閥卸荷油路，可實現自動控製。卸荷油路液壓原理如附圖所示。

油路具體工作過程如下：xiandaoshiyiliufadeyaokongkouyuerweiertongdiancifalianjie，gaidiancifashougaoduxianweiqikongzhi，danggaoduxianweiqixingchengkaiguanjietongshi
，erweiertongdiancifadedian
，shixiandaoshiyiliufahejuanyangjiqishengyouluxianhouxiehe
，juanyangmadatingzhigongzuo，juanyangjiqishengdongzuotingzhi，qidaogaoduxianweizidongbaohuzuoyong。

改進後的起升高度限位裝置
，靈敏可靠，使用效果很好。