(一(Yi))轻(Qing)负(Fu)荷(He)时(Shi)能(Neng)提(Ti)升(Sheng),(?)重(Zhong)负(Fu)荷(He)时(Shi)不(Bu)能(Neng)提(Ti)升(Sheng)或(Huo)提(Ti)升(Sheng)缓(Huan)慢(Man)
这(Zhe)是(Shi)液(Ye)压(Ya)系(Xi)统(Tong)没(Mei)有(You)达(Da)到(Dao)正(Zheng)常(Chang)的(De)工(Gong)作(Zuo)压(Ya)力(Li)造(Zao)成(Cheng)的(De)。(?)产(Chan)生(Sheng)故(Gu)障(Zhang)的(De)原(Yuan)因(Yin)很(Hen)多(Duo),(?)可(Ke)从(Cong)下(Xia)面(Mian)两(Liang)方(Fang)面(Mian)来(Lai)判(Pan)断(Duan):
(1)将(Jiang)操(Cao)纵(Zong)手(Shou)柄(Bing)放(Fang)在(Zai)“(?)提(Ti)升(Sheng)”(?)位(Wei)置(Zhi),(?)农(Nong)具(Ju)不(Bu)能(Neng)提(Ti)升(Sheng)或(Huo)提(Ti)升(Sheng)缓(Huan)慢(Man),(?)用(Yong)人(Ren)力(Li)将(Jiang)农(Nong)具(Ju)抬(Tai)起(Qi)后(Hou)能(Neng)保(Bao)持(Chi)在(Zai)提(Ti)升(Sheng)高(Gao)度(Du)上(Shang),(?)这(Zhe)表(Biao)明(Ming)液(Ye)压(Ya)缸(Gang)和(He)分(Fen)配(Pei)器(Qi)的(De)工(Gong)作(Zuo)正(Zheng)常(Chang)。(?)产(Chan)生(Sheng)故(Gu)障(Zhang)的(De)主(Zhu)要(Yao)原(Yuan)因(Yin)是(Shi)油(You)面(Mian)过(Guo)低(Di)、(?)过(Guo)滤(Lu)器(Qi)堵(Du)塞(Sai)、(?)油(You)管(Guan)接(Jie)头(Tou)漏(Lou)气(Qi)及(Ji)液(Ye)压(Ya)泵(Beng)压(Ya)力(Li)不(Bu)足(Zu)等(Deng)。(?)
(2)将(Jiang)操(Cao)纵(Zong)手(Shou)柄(Bing)放(Fang)在(Zai)“(?)提(Ti)升(Sheng)”(?)位(Wei)置(Zhi),(?)用(Yong)人(Ren)力(Li)抬(Tai)起(Qi)农(Nong)具(Ju)后(Hou)农(Nong)具(Ju)迅(Xun)速(Su)沉(Chen)降(Jiang)。(?)这(Zhe)表(Biao)明(Ming)故(Gu)障(Zhang)的(De)主(Zhu)要(Yao)原(Yuan)因(Yin)是(Shi)分(Fen)配(Pei)器(Qi)和(He)液(Ye)压(Ya)缸(Gang)漏(Lou)油(You),(?)如(Ru)液(Ye)压(Ya)缸(Gang)活(Huo)塞(Sai)上(Shang)的(De)密(Mi)封(Feng)圈(Quan)损(Sun)坏(Huai),(?)分(Fen)配(Pei)器(Qi)的(De)主(Zhu)控(Kong)制(Zhi)阀(Fa)、(?)单(Dan)向(Xiang)阀(Fa)、(?)下(Xia)降(Jiang)速(Su)度(Du)控(Kong)制(Zhi)阀(Fa)及(Ji)安(An)全(Quan)阀(Fa)漏(Lou)油(You)等(Deng)。(?)检(Jian)查(Cha)漏(Lou)油(You)部(Bu)位(Wei)时(Shi),(?)须(Xu)拆(Chai)掉(Diao)提(Ti)升(Sheng)器(Qi)上(Shang)盖(Gai)。(?)为(Wei)了(Liao)缩(Suo)小(Xiao)检(Jian)查(Cha)范(Fan)围(Wei),(?)先(Xian)将(Jiang)安(An)全(Quan)阀(Fa)总(Zong)成(Cheng)接(Jie)在(Zai)喷(Pen)泊(Bo)器(Qi)试(Shi)验(Yan)器(Qi)上(Shang)进(Jin)行(Xing)开(Kai)启(Qi)压(Ya)力(Li)的(De)检(Jian)查(Cha)凋(Diao)整(Zheng),(?)调(Diao)好(Hao)后(Hou)再(Zai)装(Zhuang)回(Hui)提(Ti)升(Sheng)器(Qi)上(Shang),(?)在(Zai)安(An)全(Quan)阀(Fa)正(Zheng)常(Chang)的(De)情(Qing)况(Kuang)下(Xia),(?)其(Qi)余(Yu)各(Ge)部(Bu)位(Wei)漏(Lou)油(You)可(Ke)通(Tong)过(Guo)直(Zhi)接(Jie)观(Guan)察(Cha)法(Fa)检(Jian)查(Cha)。(?)
俭(Jian)查(Cha)安(An)全(Quan)阀(Fa)的(De)密(Mi)封(Feng)性(Xing)能(Neng)时(Shi),(?)可(Ke)向(Xiang)安(An)全(Quan)阀(Fa)注(Zhu)入(Ru)煤(Mei)油(You),(?)5min内(Nei)不(Bu)渗(Shen)漏(Lou)为(Wei)正(Zheng)常(Chang)。(?)也(Ye)可(Ke)在(Zai)车(Che)}:检(Jian)查(Cha),(?)方(Fang)法(Fa)是(Shi):把(Ba)操(Cao)纵(Zong)手(Shou)柄(Bing)扳(Ban)至(Zhi)“(?)提(Ti)升(Sheng)”(?)位(Wei)置(Zhi),(?)拆(Chai)去(Qu)提(Ti)升(Sheng)器(Qi)上(Shang)盖(Gai),(?)观(Guan)察(Cha)农(Nong)具(Ju)在(Zai)提(Ti)升(Sheng)过(Guo)程(Cheng)中(Zhong)和(He)提(Ti)升(Sheng)终(Zhong)了(Liao)时(Shi)。(?)装(Zhuang)在(Zai)提(Ti)升(Sheng)器(Qi)壳(Ke)体(Ti)右(You)侧(Ce)进(Jin)油(You)盖(Gai)总(Zong)成(Cheng)上(Shang)的(De)安(An)全(Quan)阀(Fa)是(Shi)否(Fou)喷(Pen)油(You),(?)若(Ruo)有(You),(?)则(Ze)表(Biao)明(Ming)安(An)全(Quan)阀(Fa)漏(Lou)油(You)。(?)
如(Ru)发(Fa)现(Xian)安(An)全(Quan)阀(Fa)的(De)钢(Gang)球(Qiu)有(You)麻(Ma)点(Dian),(?)密(Mi)封(Feng)锥(Zhui)面(Mian)有(You)较(Jiao)深(Shen)的(De)沟(Gou)痕(Hen)及(Ji)阀(Fa)座(Zuo)磨(Mo)报(Bao)较(Jiao)严(Yan)重(Zhong)时(Shi),(?)应(Ying)进(Jin)行(Xing)修(Xiu)磨(Mo),(?)必(Bi)要(Yao)时(Shi)更(Geng)换(Huan)之(Zhi)。(?)
(二(?))农(Nong)具(Ju)提(Ti)升(Sheng)后(Hou)上(Shang)下(Xia)跳(Tiao)动(Dong)不(Bu)止(Zhi)
这(Zhe)种(Zhong)现(Xian)象(Xiang)通(Tong)常(Chang)称(Cheng)为(Wei)提(Ti)升(Sheng)器(Qi)“(?)点(Dian)头(Tou)”(?),(?)它(Ta)往(Wang)往(Wang)与(Yu)农(Nong)具(Ju)静(Jing)沉(Chen)降(Jiang)的(De)故(Gu)障(Zhang)同(Tong)时(Shi)出(Chu)现(Xian)。(?)其(Qi)实(Shi)质(Zhi)就(Jiu)是(Shi)第(Di)一(Yi)种(Zhong)故(Gu)障(Zhang)的(De)早(Zao)期(Qi)症(Zheng)状(Zhuang),(?)是(Shi)液(Ye)压(Ya)缸(Gang)内(Nei)有(You)轻(Qing)微(Wei)漏(Lou)油(You),(?)使(Shi)农(Nong)具(Ju)不(Bu)能(Neng)保(Bao)持(Chi)在(Zai)提(Ti)升(Sheng)高(Gao)度(Du)上(Shang)。(?)在(Zai)农(Nong)具(Ju)自(Zi)行(Xing)沉(Chen)降(Jiang)的(De)过(Guo)程(Cheng)中(Zhong),(?)由(You)于(Yu)提(Ti)升(Sheng)轴(Zhou)的(De)转(Zhuan)动(Dong),(?)固(Gu)定(Ding)在(Zai)轴(Zhou)上(Shang)的(De)位(Wei)凸(Tu)轮(Lun)便(Bian)推(Tui)动(Dong)位(Wei)杠(Gang)杆(Gan)向(Xiang)后(Hou)移(Yi),(?)而(?)脱(Tuo)离(Li)对(Dui)主(Zhu)控(Kong)制(Zhi)阀(Fa)的(De)控(Kong)制(Zhi)口(Kou)主(Zhu)控(Kong)制(Zhi)阀(Fa)在(Zai)其(Qi)弹(Dan)簧(Huang)的(De)推(Tui)动(Dong)下(Xia),(?)由(You)“(?)中(Zhong)立(Li)”(?)位(Wei)置(Zhi)外(Wai)伸(Shen)至(Zhi)“(?)提(Ti)升(Sheng)”(?)位(Wei)置(Zhi),(?)这(Zhe)祥(Xiang)农(Nong)具(Ju)又(You)重(Zhong)新(Xin)升(Sheng)起(Qi)。(?)当(Dang)农(Nong)具(Ju)升(Sheng)至(Zhi)最(Zui)高(Gao)点(Dian)后(Hou),(?)主(Zhu)控(Kong)制(Zhi)阀(Fa)在(Zai)位(Wei)凸(Tu)轮(Lun)的(De)作(Zuo)用(Yong)下(Xia)又(You)返(Fan)回(Hui)“(?)中(Zhong)立(Li)”(?)位(Wei)置(Zhi),(?)而(?)液(Ye)压(Ya)缸(Gang)依(Yi)然(Ran)漏(Lou)油(You),(?)使(Shi)农(Nong)具(Ju)再(Zai)次(Ci)沉(Chen)降(Jiang),(?)如(Ru)此(Ci)循(Xun)环(Huan),(?)便(Bian)造(Zao)成(Cheng)农(Nong)具(Ju)跳(Tiao)动(Dong)不(Bu)止(Zhi)。(?)
(三(San))农(Nong)具(Ju)提(Ti)升(Sheng)时(Shi)抖(Dou)动(Dong)
这(Zhe)是(Shi)因(Yin)为(Wei)安(An)全(Quan)阀(Fa)开(Kai)启(Qi)压(Ya)力(Li)不(Bu)稳(Wen)定(Ding),(?)使(Shi)农(Nong)具(Ju)在(Zai)提(Ti)升(Sheng)过(Guo)程(Cheng)中(Zhong)油(You)压(Ya)发(Fa)生(Sheng)波(Bo)动(Dong),(?)引(Yin)起(Qi)农(Nong)具(Ju)提(Ti)升(Sheng)时(Shi)抖(Dou)动(Dong)。(?)这(Zhe)时(Shi)须(Xu)检(Jian)查(Cha)安(An)全(Quan)阀(Fa)的(De)开(Kai)启(Qi)压(Ya)力(Li)(正(Zheng)常(Chang)值(Zhi)为(Wei)13.72MPa ) .方(Fang)法(Fa)是(Shi):将(Jiang)安(An)全(Quan)阀(Fa)总(Zong)成(Cheng)装(Zhuang)在(Zai)发(Fa)动(Dong)机(Ji)喷(Pen)油(You)泵(Beng)的(De)喷(Pen)油(You)器(Qi)试(Shi)验(Yan)器(Qi)上(Shang)进(Jin)行(Xing)测(Ce)试(Shi)。(?)
如(Ru)果(Guo)发(Fa)现(Xian)安(An)全(Quan)阀(Fa)弹(Dan)簧(Huang)压(Ya)力(Li)不(Bu)足(Zu)而(?)又(You)无(Wu)法(Fa)通(Tong)过(Guo)拧(Ning)动(Dong)调(Diao)整(Zheng)螺(Luo)栓(Shuan)的(De)方(Fang)法(Fa)调(Diao)整(Zheng)时(Shi),(?)可(Ke)在(Zai)安(An)全(Quan)阀(Fa)弹(Dan)簧(Huang)和(He)调(Diao)整(Zheng)螺(Luo)栓(Shuan)之(Zhi)间(Jian)添(Tian)加(Jia)垫(Dian)片(Pian)口(Kou)一(Yi)般(Ban)来(Lai)说(Shuo),(?)每(Mei)增(Zeng)加(Jia)工(Gong)mm厚(Hou)度(Du)的(De)垫(Dian)片(Pian),(?)可(Ke)增(Zeng)加(Jia)0.98MPa的(De)弹(Dan)簧(Huang)压(Ya)力(Li)。(?)
(四(Si))分(Fen)配(Pei)器(Qi)的(De)工(Gong)艺(Yi)螺(Luo)塞(Sai)脱(Tuo)落(Luo),(?)造(Zao)成(Cheng)农(Nong)具(Ju)不(Bu)能(Neng)提(Ti)升(Sheng)
分(Fen)配(Pei)器(Qi)壳(Ke)体(Ti)上(Shang)共(Gong)有(You)8个(Ge)尼(Ni)龙(Long)工(Gong)艺(Yi)螺(Luo)塞(Sai),(?)一(Yi)由(You)于(Yu)尼(Ni)龙(Long)螺(Luo)塞(Sai)易(Yi)遇(Yu)热(Re)变(Bian)软(Ruan),(?)因(Yin)此(Ci)很(Hen)容(Rong)易(Yi)脱(Tuo)落(Luo).造(Zao)成(Cheng)农(Nong)具(Ju)不(Bu)能(Neng)提(Ti)升(Sheng)。(?)对(Dui)于(Yu)这(Zhe)种(Zhong)情(Qing)况(Kuang),(?)可(Ke)用(Yong)黄(Huang)油(You)嘴(Zui)代(Dai)替(Ti)尼(Ni)龙(Long)螺(Luo)塞(Sai)。(?)两(Liang)者(Zhe)的(De)螺(Luo)纹(Wen)相(Xiang)同(Tong),(?)只(Zhi)要(Yao)用(Yong)铜(Tong)焊(Han)将(Jiang)黄(Huang)油(You)嘴(Zui)口(Kou)堵(Du)住(Zhu)(铆(Mao)之(Zhi)亦(Yi)可(Ke))即(Ji)可(Ke)代(Dai)用(Yong)。(?)
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