;                   武(wu)漢20V6A液(ye)壓泵氣動設備

3525V雙聯葉片泵 20V2A-86A22R葉片泵 20V2A-86B22R葉片泵 20V2A-86C22R葉片泵 20V2A-86D22R葉片泵
4535V雙聯葉片泵 20V3A-86A22R葉片泵 20V3A-86B22R葉片泵 20V3A-86C22R葉片泵 20V3A-86D22R葉片泵20V6A葉片泵
 20V4A-86A22R葉片泵 20V4A-86B22R葉片泵 20V4A-86C22R葉片泵 20V4A-86D22R葉片泵
 20V5A-86A22R葉片泵 20V5A-86B22R葉片泵 20V5A-86C22R葉片泵 20V5A-86D22R葉片泵
 20V6A-86A22R葉片泵 20V6A-86B22R葉片泵 20V6A-86C22R葉片泵 20V6A-86D22R葉片泵
 20V7A-86A22R葉片泵 20V7A-86B22R葉片泵 20V7A-86C22R葉片泵 20V7A-86D22R葉片泵
 20V8A-86A22R葉片泵 20V8A-86B22R葉片泵 20V8A-86C22R葉片泵 20V8A-86D22R葉片泵
 20V9A-86A22R葉片泵(beng)(beng) 20V9A-86B22R葉片泵(beng)(beng) 20V9A-86C22R葉片泵(beng)(beng) 20V9A-86D22R葉片泵(beng)(beng)

工程機械_挖掘機的維修_液壓控制系統的改進(jin)

武漢20V6A液壓泵氣動設備實(shi)現(xian)挖掘機(ji)的電液(ye)比例控(kong)制(zhi)、液(ye)壓(ya)伺(si)服(fu)控(kong)制(zhi)及遠程(cheng)無線控(kong)制(zhi)，可大(da)大(da)減輕駕駛(shi)員的重復操作(zuo)勞動，把挖掘機(ji)駕駛(shi)員從傳統的杠桿操縱和惡劣(lie)的工(gong)作(zuo)環境(jing)中解放出來武漢星興達(da)液壓(ya)。基(ji)于以上(shang)思想，把一臺WYI.5型(xing)液壓挖掘機的(de)(de)杠桿操作系統改裝設計(ji)成電液比(bi)例控制的(de)(de)液壓系統，并基(ji)于E1型(xing)移動車(che)輛(liang)控制器(qi)來(lai)實現對整車(che)的(de)(de)控制。

(1) WYI.5型(xing)挖(wa)掘機液壓(ya)系(xi)統

WYI.5型挖掘機(ji)液(ye)(ye)(ye)壓(ya)系(xi)統(tong)由(you)油(you)箱(xiang)、三聯齒輪(lun)泵(一(yi)個(ge)3mL/r、兩個(ge)8mL/r)、多路換(huan)(huan)(huan)向閥(fa)(fa)、溢流閥(fa)(fa)、節流閥(fa)(fa)、動臂液(ye)(ye)(ye)壓(ya)缸(gang)(gang)、斗(dou)桿(gan)液(ye)(ye)(ye)壓(ya)缸(gang)(gang)、鏟(chan)斗(dou)液(ye)(ye)(ye)壓(ya)缸(gang)(gang)、工(gong)(gong)(gong)作裝(zhuang)(zhuang)置偏(pian)轉液(ye)(ye)(ye)壓(ya)缸(gang)(gang)、推(tui)土鏟(chan)液(ye)(ye)(ye)壓(ya)缸(gang)(gang)、左右行走馬達、整(zheng)機(ji)回(hui)(hui)轉馬達、散熱器和(he)濾清器等組成。推(tui)土鏟(chan)供油(you)由(you)一(yi)個(ge)3mL/r的齒輪(lun)泵單獨完成，當(dang)推(tui)土鏟(chan)不工(gong)(gong)(gong)作時(shi)，其高壓(ya)油(you)直接返回(hui)(hui)油(you)箱(xiang)。在整(zheng)機(ji)回(hui)(hui)轉馬達控(kong)(kong)制閥(fa)(fa)后加裝(zhuang)(zhuang)一(yi)換(huan)(huan)(huan)向閥(fa)(fa)，實現整(zheng)機(ji)回(hui)(hui)轉馬達和(he)工(gong)(gong)(gong)作裝(zhuang)(zhuang)置偏(pian)轉液(ye)(ye)(ye)壓(ya)缸(gang)(gang)之(zhi)間的油(you)路切換(huan)(huan)(huan)控(kong)(kong)制。其余液(ye)(ye)(ye)壓(ya)系(xi)統(tong)為典(dian)型的雙泵、雙回(hui)(hui)路、中位回(hui)(hui)油(you)、可合流系(xi)統(tong)。

(2)電控液壓系統的改進

①電(dian)液比例(li)(li)液壓系(xi)(xi)統(tong)(tong)(tong)(tong)設計(ji)為實現(xian)各機構的電(dian)液比例(li)(li)控(kong)制，在不改變原有杠(gang)(gang)桿(gan)操(cao)(cao)縱系(xi)(xi)統(tong)(tong)(tong)(tong)功能的基礎(chu)上(shang)并聯(lian)一套電(dian)控(kong)系(xi)(xi)統(tong)(tong)(tong)(tong)。為安全起見(jian)，兩套系(xi)(xi)統(tong)(tong)(tong)(tong)設計(ji)成(cheng)不能同時(shi)工(gong)作(zuo)，在優先級(ji)上(shang)電(dian)控(kong)系(xi)(xi)統(tong)(tong)(tong)(tong)工(gong)作(zuo)時(shi)杠(gang)(gang)桿(gan)操(cao)(cao)縱系(xi)(xi)統(tong)(tong)(tong)(tong)無(wu)法使(shi)用，而(er)在電(dian)控(kong)系(xi)(xi)統(tong)(tong)(tong)(tong)停止工(gong)作(zuo)時(shi)杠(gang)(gang)桿(gan)操(cao)(cao)縱系(xi)(xi)統(tong)(tong)(tong)(tong)自動恢(hui)復(fu)正常工(gong)作(zuo)。如圖K所示(shi)，為實現(xian)此(ci)功能，選(xuan)取(qu)兩位兩通的電(dian)磁(ci)換向(xiang)閥1、2來實現(xian)高壓油在電(dian)控(kong)系(xi)(xi)統(tong)(tong)(tong)(tong)和杠(gang)(gang)桿(gan)操(cao)(cao)縱系(xi)(xi)統(tong)(tong)(tong)(tong)中的切(qie)換武漢星興達(da)液(ye)壓(ya)。電磁閥(fa)的(de)(de)(de)控(kong)制(zhi)基于(yu)軟件編(bian)程(cheng)(cheng)實現(xian)，其響應(ying)時(shi)(shi)間、響應(ying)速度(du)均與(yu)操作(zuo)(zuo)者的(de)(de)(de)熟練程(cheng)(cheng)度(du)沒有關系(xi)(xi)，因此選用(yong)電磁換向(xiang)閥(fa)3來實現(xian)整個(ge)系(xi)(xi)統(tong)不工作(zuo)(zuo)時(shi)(shi)的(de)(de)(de)卸(xie)荷(回(hui)流(liu))。電磁換向(xiang)閥(fa)4用(yong)于(yu)系(xi)(xi)統(tong)的(de)(de)(de)雙(shuang)泵(beng)合流(liu)。原(yuan)杠(gang)桿操縱系(xi)(xi)統(tong)在(zai)(zai)動(dong)(dong)臂(bei)(bei)(bei)(bei)提升(sheng)時(shi)(shi)，發現(xian)有短暫下(xia)降然后(hou)才正常提升(sheng)的(de)(de)(de)現(xian)象。究其原(yuan)因，液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)系(xi)(xi)統(tong)不工作(zuo)(zuo)時(shi)(shi)所有換向(xiang)閥(fa)處(chu)于(yu)中位(wei)(wei)回(hui)油(you)位(wei)(wei)置，泵(beng)出口處(chu)壓(ya)(ya)(ya)力(li)(li)處(chu)于(yu)低壓(ya)(ya)(ya)狀態(tai)，當要提升(sheng)動(dong)(dong)臂(bei)(bei)(bei)(bei)時(shi)(shi)，換向(xiang)閥(fa)切(qie)換到(dao)提升(sheng)位(wei)(wei)置，這時(shi)(shi)泵(beng)出口與(yu)杠(gang)桿操縱閥(fa)之(zhi)間管路(lu)內的(de)(de)(de)壓(ya)(ya)(ya)力(li)(li)仍處(chu)于(yu)低壓(ya)(ya)(ya)狀態(tai)，而動(dong)(dong)臂(bei)(bei)(bei)(bei)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)缸(gang)下(xia)腔中的(de)(de)(de)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)油(you)要支撐整個(ge)動(dong)(dong)臂(bei)(bei)(bei)(bei)、斗桿、鏟斗及(ji)其液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)缸(gang)的(de)(de)(de)重(zhong)力(li)(li)，具有相當的(de)(de)(de)壓(ya)(ya)(ya)力(li)(li)，所以(yi)在(zai)(zai)換向(xiang)閥(fa)剛剛切(qie)換到(dao)提升(sheng)位(wei)(wei)置時(shi)(shi)，動(dong)(dong)臂(bei)(bei)(bei)(bei)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)缸(gang)下(xia)腔的(de)(de)(de)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)油(you)要流(liu)向(xiang)壓(ya)(ya)(ya)力(li)(li)低的(de)(de)(de)管路(lu)系(xi)(xi)統(tong)，表(biao)現(xian)為動(dong)(dong)臂(bei)(bei)(bei)(bei)早期下(xia)降;隨著齒輪泵(beng)的(de)(de)(de)工作(zuo)(zuo)，系(xi)(xi)統(tong)的(de)(de)(de)壓(ya)(ya)(ya)力(li)(li)不斷(duan)升(sheng)高，當與(yu)動(dong)(dong)臂(bei)(bei)(bei)(bei)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)缸(gang)下(xia)腔中的(de)(de)(de)壓(ya)(ya)(ya)力(li)(li)相等時(shi)(shi)，動(dong)(dong)臂(bei)(bei)(bei)(bei)停止下(xia)降;此后(hou)，系(xi)(xi)統(tong)壓(ya)(ya)(ya)力(li)(li)逐(zhu)漸高于(yu)動(dong)(dong)臂(bei)(bei)(bei)(bei)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)缸(gang)下(xia)腔中的(de)(de)(de)壓(ya)(ya)(ya)力(li)(li)，動(dong)(dong)臂(bei)(bei)(bei)(bei)開始提升(sheng)。這個(ge)過(guo)程(cheng)(cheng)存在(zai)(zai)的(de)(de)(de)時(shi)(shi)間很短，動(dong)(dong)臂(bei)(bei)(bei)(bei)下(xia)降的(de)(de)(de)幅(fu)度(du)也不大，但對挖掘機作(zuo)(zuo)業是一個(ge)不可忽視的(de)(de)(de)安(an)全隱患，所以(yi)在(zai)(zai)新的(de)(de)(de)電控(kong)系(xi)(xi)統(tong)設計中加裝了液(ye)(ye)(ye)(ye)控(kong)單向(xiang)閥(fa)5以(yi)保(bao)證(zheng)動(dong)(dong)臂(bei)(bei)(bei)(bei)提升(sheng)的(de)(de)(de)安(an)全準確(que)。其他控(kong)制(zhi)系(xi)(xi)統(tong)的(de)(de)(de)設計基本采用(yong)了原(yuan)杠(gang)桿操縱系(xi)(xi)統(tong)的(de)(de)(de)方(fang)案。其工作(zuo)(zuo)原(yuan)理見(jian)圖K武(wu)漢星興達液壓。

電(dian)磁換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)的(de)滑閥(fa)(fa)(fa)(fa)機能如(ru)圖K所示(shi)，為(wei)(wei)A型(xing)(xing)換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)。而控(kong)制各執行(xing)機構動(dong)作(zuo)的(de)直動(dong)式電(dian)磁比例閥(fa)(fa)(fa)(fa)只有通(tong)徑(jing)為(wei)(wei)6與10兩種型(xing)(xing)號可(ke)選(xuan)擇。為(wei)(wei)減少液(ye)壓(ya)閥(fa)(fa)(fa)(fa)板(ban)的(de)設計(ji)難(nan)度和加(jia)工費用，換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)也(ye)在(zai)(zai)通(tong)徑(jing)6與10中(zhong)選(xuan)取。為(wei)(wei)減少因誤(wu)操作(zuo)引起線圈(quan)燒毀的(de)損失，選(xuan)用濕式可(ke)更換(huan)線圈(quan)電(dian)磁鐵。與圖7-11中(zhong)的(de)液(ye)壓(ya)泵匹配的(de)L375柴(chai)油機的(de)穩定轉速為(wei)(wei)小(xiao)于650r/s，轉速為(wei)(wei)2650r/s，外特性曲線中(zhong)的(de)油耗點在(zai)(zai)1950r/s。單(dan)個齒輪泵的(de)排量(liang)(liang)為(wei)(wei)8mL/r，可(ke)計(ji)算出(chu)換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)1、2、3的(de)流(liu)量(liang)(liang)都應為(wei)(wei)5.2～21.2L/min，經濟油耗流(liu)量(liang)(liang)為(wei)(wei)15.6L/min。換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)4的(de)流(liu)量(liang)(liang)是換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)1、2、3的(de)兩倍(bei)。根據(ju)通(tong)徑(jing)6、10的(de)A型(xing)(xing)濕式可(ke)更換(huan)線圈(quan)電(dian)磁鐵換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)的(de)特性曲線，可(ke)以看出(chu)流(liu)動(dong)方向(xiang)(xiang)P-A、P-B，通(tong)徑(jing)6與10的(de)換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)在(zai)(zai)流(liu)量(liang)(liang)小(xiao)于20L/min時，其壓(ya)降差別不大，均在(zai)(zai)0.1～0.2MPa之間;而在(zai)(zai)流(liu)量(liang)(liang)大于20L/tnin后(hou)，6通(tong)徑(jing)換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)壓(ya)降隨(sui)流(liu)量(liang)(liang)的(de)增加(jia)升高(gao)很快(kuai)。故此換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)1、2、3選(xuan)用6通(tong)徑(jing)，即(ji)3WE6A-61B/CG24N9ZSL型(xing)(xing);而換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)(fa)4選(xuan)用10通(tong)徑(jing)，即(ji)3WE10A-31B/CG24N925L型(xing)(xing)。

該挖(wa)掘機(ji)中的(de)(de)六個執(zhi)行(xing)機(ji)構.(左行(xing)走、右(you)行(xing)走、整機(ji)回轉馬達(da);動臂、斗(dou)桿、鏟(chan)斗(dou)液壓缸)的(de)(de)控(kong)制均(jun)采(cai)用(yong)比例(li)換向閥(fa)，比例(li)換向閥(fa)的(de)(de)機(ji)能為如圖K所(suo)示的(de)(de)E型(xing)。由于電控(kong)挖(wa)掘機(ji)的(de)(de)鏟(chan)斗(dou)運(yun)動軌跡要做(zuo)控(kong)制，所(suo)以動臂、斗(dou)桿、鏟(chan)斗(dou)液壓缸的(de)(de)控(kong)制選取帶閥(fa)芯位(wei)置(zhi)電氣反饋的(de)(de)4WRE型(xing)比例(li)換向閥(fa)。左行(xing)走、右(you)行(xing)走、整機(ji)回轉馬達(da)采(cai)用(yong)普(pu)通(tong)型(xing)的(de)(de)4WRA型(xing)比例(li)換向閥(fa)。

單個(ge)泵的(de)(de)(de)(de)(de)流(liu)(liu)量在(zai)5.2～21.2L/min之間，經(jing)濟油耗(hao)流(liu)(liu)量為15.6L/min。結(jie)合液壓(ya)(ya)挖(wa)掘機的(de)(de)(de)(de)(de)實際工作(zuo)情況，行走(zou)(zou)(zou)時每個(ge)馬達基(ji)本由一個(ge)泵供油;整車回(hui)轉(zhuan)(zhuan)過程中具有(you)較(jiao)大的(de)(de)(de)(de)(de)轉(zhuan)(zhuan)動慣量，在(zai)停止(zhi)回(hui)轉(zhuan)(zhuan)時所(suo)產(chan)生(sheng)的(de)(de)(de)(de)(de)沖擊(ji)振(zhen)動會對車輛回(hui)轉(zhuan)(zhuan)部件的(de)(de)(de)(de)(de)使用(yong)壽(shou)命產(chan)生(sheng)較(jiao)大影響(xiang)，故回(hui)轉(zhuan)(zhuan)速(su)度不(bu)宜過大，即不(bu)宜采用(yong)雙泵合流(liu)(liu)。結(jie)合6通(tong)徑、10通(tong)徑4WRA型(xing)比例(li)換(huan)向(xiang)(xiang)閥的(de)(de)(de)(de)(de)流(liu)(liu)量、輸入值和(he)閥壓(ya)(ya)降(jiang)的(de)(de)(de)(de)(de)特(te)性曲(qu)線可知，在(zai)控制精度要求(qiu)不(bu)高(gao)的(de)(de)(de)(de)(de)情況下，6通(tong)徑、名義流(liu)(liu)量為17L/min的(de)(de)(de)(de)(de)比例(li)換(huan)向(xiang)(xiang)閥可滿足(zu)左行走(zou)(zou)(zou)、右(you)行走(zou)(zou)(zou)及(ji)整機回(hui)轉(zhuan)(zhuan)馬達的(de)(de)(de)(de)(de)要求(qiu)，故選用(yong)4WRE6E20-10B/24N24/M型(xing)比例(li)換(huan)向(xiang)(xiang)閥。

由液(ye)(ye)(ye)壓(ya)挖掘(jue)(jue)機的實(shi)際工作情況知，動臂、斗(dou)桿、鏟斗(dou)液(ye)(ye)(ye)壓(ya)缸(gang)的供(gong)(gong)油(you)均存(cun)在(zai)雙泵(beng)合流(liu)工況，單(dan)泵(beng)供(gong)(gong)油(you)時其(qi)控(kong)制閥(fa)(fa)的流(liu)量為5.2～21.4L/min，雙泵(beng)供(gong)(gong)油(you)時為10.2～42.4L/min，對(dui)應的經(jing)濟油(you)耗流(liu)量為15.6L/min或31.2L/min。結合分析6通徑與10通徑4WRE型比(bi)例(li)換(huan)向閥(fa)(fa)的流(liu)量、輸(shu)入(ru)值和閥(fa)(fa)壓(ya)降的特性(xing)曲(qu)線(xian)，可以(yi)看到所有曲(qu)線(xian)都(dou)在(zai)其(qi)輸(shu)入(ru)值的30%～80%之(zhi)間直，線(xian)性(xing)程度好，易于(yu)實(shi)控(kong)制，加之(zhi)在(zai)實(shi)現挖掘(jue)(jue)機電液(ye)(ye)(ye)比(bi)例(li)控(kong)制時希望(wang)在(zai)液(ye)(ye)(ye)壓(ya)閥(fa)(fa)進(jin)出口的臺肩總壓(ya)降。結合以(yi)上數據(ju)與原則選(xuan)取了10通徑、名義流(liu)量為64L/min的比(bi)例(li)換(huan)向閥(fa)(fa)，即4WRE10E64-10B/24ZA/M型比(bi)例(li)換(huan)向閥(fa)(fa)。

其(qi)他溢流(liu)閥(fa)、節(jie)流(liu)閥(fa)、單向節(jie)流(liu)閥(fa)、液控單向閥(fa)的(de)選取均根(gen)據(ju)與其(qi)連接、武漢20V6A液壓泵氣動設備的換(huan)向閥和原機設計的工(gong)作壓力、流量而定武漢星(xing)興(xing)達液壓。20V6A葉片泵

(3)總結

挖掘(jue)機(ji)電液比例控(kong)(kong)制(zhi)(zhi)液壓系統(tong)改造后，系統(tong)控(kong)(kong)制(zhi)(zhi)采(cai)用德國INTER CONTROL公司的(de)E1型移動車(che)輛控(kong)(kong)制(zhi)(zhi)器，開(kai)發軟件并調試(shi)成(cheng)功，可(ke)近(jin)程(cheng)(cheng)有(you)線遙控(kong)(kong)操作(zuo)，也可(ke)按程(cheng)(cheng)序自動完成(cheng)事(shi)先預定(ding)的(de)動作(zuo)，實現了原機(ji)杠桿(gan)操縱(zong)系統(tong)所能(neng)完成(cheng)的(de)全部(bu)功能(neng)，為下(xia)一步實現挖掘(jue)機(ji)的(de)遠程(cheng)(cheng)遙控(kong)(kong)操作(zuo)奠(dian)定(ding)了堅實的(de)基礎。

 20V10A-86A22R葉片泵 20V10A-86B22R葉片泵 20V10A-86C22R葉片泵 20V10A-86D22R葉片泵
 20V11A-86A22R葉片泵 20V11A-86B22R葉片泵 20V11A-86C22R葉片泵 20V11A-86D22R葉片泵
 20V12A-86A22R葉片泵 20V12A-86B22R葉片泵 20V12A-86C22R葉片泵 20V12A-86D22R葉片泵
 20V14A-86A22R葉片泵 20V14A-86B22R葉片泵 20V14A-86C22R葉片泵 20V14A-86D22R葉片泵
 25V10A-86A22R葉片泵 25V10A-86B22R葉片泵 25V10A-86C22R葉片泵 25V10A-86D22R葉片泵
 25V12A-86A22R葉片泵 25V12A-86B22R葉片泵 25V12A-86C22R葉片泵 25V12A-86D22R葉片泵
 25V14A-86A22R葉片泵 25V14A-86B22R葉片泵 25V14A-86C22R葉片泵 25V14A-86D22R葉片泵
 25V15A-86A22R葉片泵 25V15A-86B22R葉片泵 25V15A-86C22R葉片泵 25V15A-86D22R葉片泵
 25V17A-86A22R葉片泵 25V17A-86B22R葉片泵 25V17A-86C22R葉片泵 25V17A-86D22R葉片泵
 25V19A-86A22R葉片泵 25V19A-86B22R葉片泵 25V19A-86C22R葉片泵 25V19A-86D22R葉片泵
 25V21A-86A22R葉片泵 25V21A-86B22R葉片泵 25V21A-86C22R葉片泵 25V21A-86D22R葉片泵
 35V21A-86A22R葉片泵 35V21A-86B22R葉片泵 35V21A-86C22R葉片泵 35V21A-86D22R葉片泵
 35V25A-86A22R葉片泵 35V25A-86B22R葉片泵 35V25A-86C22R葉片泵 35V25A-86D22R葉片泵
 35V30A-86A22R葉片泵 35V30A-86B22R葉片泵 35V30A-86C22R葉片泵 35V30A-86D22R葉片泵
 35V32A-86A22R葉片泵 35V32A-86B22R葉片泵 35V32A-86C22R葉片泵 35V32A-86D22R葉片泵
 35V35A-86A22R葉片泵 35V35A-86B22R葉片泵 35V35A-86C22R葉片泵 35V35A-86D22R葉片泵
 35V38A-86A22R葉片泵 35V38A-86B22R葉片泵 35V38A-86C22R葉片泵 35V38A-86D22R葉片泵
 45V42A-86A22R葉片泵 45V42A-86B22R葉片泵 45V42A-86C22R葉片泵 45V42A-86D22R葉片泵
 45V45A-86A22R葉片泵 45V45A-86B22R葉片泵 45V45A-86C22R葉片泵 45V45A-86D22R葉片泵
 45V50A-86A22R葉片泵 45V50A-86B22R葉片泵 45V50A-86C22R葉片泵 45V50A-86D22R葉片泵
 45V57A-86A22R葉片泵 45V57A-86B22R葉片泵 45V57A-86C22R葉片泵 45V57A-86D22R葉片泵
 45V60A-86A22R葉片泵 45V60A-86B22R葉片泵 45V60A-86C22R葉片泵 45V60A-86D22R葉片泵
 45V66A-86A22R葉片泵 45V66A-86B22R葉片泵 45V66A-86C22R葉片泵 45V66A-86D22R葉片泵
 45V76A-86A22R葉片泵 45V76A-86B22R葉片泵 45V76A-86C22R葉片泵 45V76A-86D22R葉片泵