*原裝美國parker變量柱塞泵現貨供應，

    PARKER變量柱塞泵的斜盤傾角為(wei)零時(shi)稱(cheng)為(wei)中位，此時(shi)泵(beng)(beng)的輸出(chu)流(liu)量(liang)(liang)應(ying)為(wei)零。但有(you)(you)時(shi)會出(chu)現(xian)中位偏離調(diao)整機構(gou)中點的現(xian)象(xiang)，在中點時(shi)仍(reng)有(you)(you)流(liu)量(liang)(liang)輸出(chu)。其原因是控(kong)(kong)制(zhi)器(qi)(qi)(qi)的位置偏離、松動(dong)或(huo)損傷，需要(yao)重(zhong)新(xin)調(diao)零、緊固或(huo)更(geng)換。泵(beng)(beng)的角度維持(chi)力(li)不(bu)(bu)夠(gou)、傾斜角耳軸磨損也會產生這(zhe)種現(xian)象(xiang)。輸出(chu)流(liu)量(liang)(liang)波(bo)動(dong)與很(hen)多因素有(you)(you)關。對變(bian)量(liang)(liang)泵(beng)(beng)可以認為(wei)是變(bian)量(liang)(liang)機構(gou)的控(kong)(kong)制(zhi)不(bu)(bu)佳造(zao)成，如異物進(jin)入(ru)變(bian)量(liang)(liang)機構(gou)，在控(kong)(kong)制(zhi)活塞上劃出(chu)階痕(hen)(hen)、磨痕(hen)(hen)、傷痕(hen)(hen)等(deng)，造(zao)成控(kong)(kong)制(zhi)活塞運動(dong)不(bu)(bu)穩(wen)定(ding)。由于放大器(qi)(qi)(qi)能量(liang)(liang)不(bu)(bu)足或(huo)零件(jian)損壞、含有(you)(you)彈簧的控(kong)(kong)制(zhi)活塞的阻尼(ni)器(qi)(qi)(qi)效能差，都會造(zao)成控(kong)(kong)制(zhi)活塞運動(dong)不(bu)(bu)穩(wen)定(ding)。流(liu)量(liang)(liang)不(bu)(bu)穩(wen)定(ding)又(you)往(wang)往(wang)伴隨(sui)著壓力(li)波(bo)動(dong)。這(zhe)類故障一(yi)般要(yao)拆開液壓泵(beng)(beng)，更(geng)換受損零部(bu)件(jian)，加大阻尼(ni)，提高彈簧剛度和控(kong)(kong)制(zhi)壓力(li)等(deng)。

 *原裝美國parker變量柱塞泵現貨供應，

    柱塞泵(beng)是(shi)往(wang)復泵(beng)的一種，屬于體(ti)積泵(beng)(beng)，其柱塞(sai)靠泵(beng)(beng)軸的(de)偏心轉(zhuan)動驅動，往復運動，其吸(xi)(xi)入和排出(chu)(chu)(chu)閥(fa)都(dou)是單(dan)向(xiang)閥(fa)。當柱塞(sai)外拉(la)時(shi)，工(gong)作室內壓力降低，出(chu)(chu)(chu)口(kou)(kou)閥(fa)關閉(bi)，低于進(jin)口(kou)(kou)壓力時(shi)，進(jin)口(kou)(kou)閥(fa)打(da)開，液體(ti)進(jin)入；柱塞(sai)內推時(shi)，工(gong)作室壓力升高，進(jin)口(kou)(kou)閥(fa)關閉(bi)，高于出(chu)(chu)(chu)口(kou)(kou)壓力時(shi)，出(chu)(chu)(chu)口(kou)(kou)閥(fa)打(da)開，液體(ti)排出(chu)(chu)(chu)。帶滑靴結構的(de)軸向(xiang)柱塞(sai)泵(beng)(beng)是目前使用(yong)zui廣(guang)泛的(de)軸向(xiang)柱塞(sai)泵(beng)(beng)，安放在(zai)缸體(ti)中(zhong)的(de)柱塞(sai)通(tong)過(guo)(guo)滑靴與斜(xie)盤(pan)(pan)相接觸，當傳(chuan)動軸帶動缸體(ti)旋轉(zhuan)時(shi)，斜(xie)盤(pan)(pan)將(jiang)柱塞(sai)從(cong)缸體(ti)中(zhong)拉(la)出(chu)(chu)(chu)或推回，完成吸(xi)(xi)排油過(guo)(guo)程。柱塞(sai)與缸孔組成的(de)工(gong)作容腔中(zhong)的(de)油液通(tong)過(guo)(guo)配油盤(pan)(pan)分別與泵(beng)(beng)的(de)吸(xi)(xi)、排油腔相通(tong)。變量機(ji)構用(yong)來改(gai)變斜(xie)盤(pan)(pan)的(de)傾(qing)(qing)角(jiao)，通(tong)過(guo)(guo)調(diao)節斜(xie)盤(pan)(pan)的(de)傾(qing)(qing)角(jiao)可改(gai)變泵(beng)(beng)的(de)排量。
     柱(zhu)塞(sai)(sai)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)維(wei)護：斜(xie)盤(pan)(pan)式(shi)軸(zhou)向(xiang)柱(zhu)塞(sai)(sai)泵(beng)(beng)(beng)(beng)(beng)一(yi)般采用缸(gang)體(ti)(ti)轉(zhuan)(zhuan)動(dong)、端面(mian)配流的(de)(de)(de)(de)(de)(de)形(xing)式(shi)。缸(gang)體(ti)(ti)端面(mian)上(shang)(shang)鑲有一(yi)塊由雙金屬板與(yu)(yu)鋼配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)組(zu)成(cheng)的(de)(de)(de)(de)(de)(de)摩擦副，而且(qie)大(da)(da)多數(shu)是(shi)(shi)采用平(ping)面(mian)配流的(de)(de)(de)(de)(de)(de)方(fang)法，所以維(wei)修比較方(fang)便。配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)是(shi)(shi)軸(zhou)向(xiang)柱(zhu)塞(sai)(sai)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)關鍵部(bu)件之一(yi)，泵(beng)(beng)(beng)(beng)(beng)工(gong)作(zuo)時(shi)(shi)(shi)，一(yi)方(fang)面(mian)工(gong)作(zuo)腔的(de)(de)(de)(de)(de)(de)高壓(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)(you)(you)(you)把(ba)缸(gang)體(ti)(ti)推(tui)向(xiang)配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)，另一(yi)方(fang)面(mian)配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)和缸(gang)體(ti)(ti)間(jian)的(de)(de)(de)(de)(de)(de)油(you)(you)(you)(you)(you)(you)(you)膜壓(ya)(ya)(ya)(ya)(ya)力形(xing)成(cheng)對缸(gang)體(ti)(ti)的(de)(de)(de)(de)(de)(de)液壓(ya)(ya)(ya)(ya)(ya)反(fan)推(tui)力使(shi)缸(gang)體(ti)(ti)背(bei)離配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)。缸(gang)體(ti)(ti)對配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)的(de)(de)(de)(de)(de)(de)設(she)計液壓(ya)(ya)(ya)(ya)(ya)壓(ya)(ya)(ya)(ya)(ya)緊(jin)(jin)力Fn略(lve)大(da)(da)于配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)對缸(gang)體(ti)(ti)的(de)(de)(de)(de)(de)(de)液壓(ya)(ya)(ya)(ya)(ya)反(fan)推(tui)力Ff，即(ji)Fn/Ff=1.05~1.1，使(shi)泵(beng)(beng)(beng)(beng)(beng)工(gong)作(zuo)正(zheng)常并保持較高的(de)(de)(de)(de)(de)(de)容積效率。  實際(ji)上(shang)(shang)，由于油(you)(you)(you)(you)(you)(you)(you)液的(de)(de)(de)(de)(de)(de)污染(ran)，往(wang)(wang)往(wang)(wang)使(shi)配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)與(yu)(yu)缸(gang)體(ti)(ti)之間(jian)產生輕微(wei)磨損(sun)。特別是(shi)(shi)高壓(ya)(ya)(ya)(ya)(ya)時(shi)(shi)(shi)，即(ji)使(shi)輕微(wei)的(de)(de)(de)(de)(de)(de)磨損(sun)也可以使(shi)液壓(ya)(ya)(ya)(ya)(ya)反(fan)推(tui)力Ff增(zeng)大(da)(da)，從而破壞Fn    常見(jian)故障處(chu)理    1．液壓(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)(beng)輸出流量(liang)(liang)不(bu)足或(huo)(huo)不(bu)輸出油(you)(you)(you)(you)(you)(you)(you)液    （1）吸入(ru)量(liang)(liang)不(bu)足。原因是(shi)(shi)吸油(you)(you)(you)(you)(you)(you)(you)管路上(shang)(shang)的(de)(de)(de)(de)(de)(de)阻力過大(da)(da)或(huo)(huo)補油(you)(you)(you)(you)(you)(you)(you)量(liang)(liang)不(bu)足。如泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)轉(zhuan)(zhuan)速過大(da)(da)，油(you)(you)(you)(you)(you)(you)(you)箱中(zhong)(zhong)(zhong)液面(mian)過低，進油(you)(you)(you)(you)(you)(you)(you)管漏(lou)氣(qi)，濾油(you)(you)(you)(you)(you)(you)(you)器(qi)堵塞(sai)(sai)等。    （2）泄漏(lou)量(liang)(liang)過大(da)(da)。原因是(shi)(shi)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)間(jian)隙過大(da)(da)，密封不(bu)良(liang)造成(cheng)。如配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)被(bei)金屬碎片、鐵屑等劃傷，端面(mian)漏(lou)油(you)(you)(you)(you)(you)(you)(you)；變量(liang)(liang)機構中(zhong)(zhong)(zhong)的(de)(de)(de)(de)(de)(de)單向(xiang)閥密封面(mian)配合(he)不(bu)好，泵(beng)(beng)(beng)(beng)(beng)體(ti)(ti)和配油(you)(you)(you)(you)(you)(you)(you)盤(pan)(pan)的(de)(de)(de)(de)(de)(de)支承面(mian)有砂眼或(huo)(huo)研(yan)痕等。可以通過檢查泵(beng)(beng)(beng)(beng)(beng)體(ti)(ti)內(nei)液壓(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)(you)(you)(you)中(zhong)(zhong)(zhong)混(hun)雜(za)的(de)(de)(de)(de)(de)(de)異物判(pan)別泵(beng)(beng)(beng)(beng)(beng)被(bei)損(sun)壞的(de)(de)(de)(de)(de)(de)部(bu)位(wei)。    （3）傾(qing)(qing)斜(xie)盤(pan)(pan)傾(qing)(qing)角(jiao)太小，泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)排(pai)量(liang)(liang)少，這需(xu)要調節變量(liang)(liang)活塞(sai)(sai)，增(zeng)加斜(xie)盤(pan)(pan)傾(qing)(qing)角(jiao)。    2．中(zhong)(zhong)(zhong)位(wei)時(shi)(shi)(shi)排(pai)油(you)(you)(you)(you)(you)(you)(you)量(liang)(liang)不(bu)為零(ling)    變量(liang)(liang)式(shi)軸(zhou)向(xiang)柱(zhu)塞(sai)(sai)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)斜(xie)盤(pan)(pan)傾(qing)(qing)角(jiao)為零(ling)時(shi)(shi)(shi)稱為中(zhong)(zhong)(zhong)位(wei)，此時(shi)(shi)(shi)泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)輸出流量(liang)(liang)應為零(ling)。但有時(shi)(shi)(shi)會出現(xian)中(zhong)(zhong)(zhong)位(wei)偏離調整(zheng)機構中(zhong)(zhong)(zhong)點(dian)的(de)(de)(de)(de)(de)(de)現(xian)象(xiang)(xiang)，在中(zhong)(zhong)(zhong)點(dian)時(shi)(shi)(shi)仍有流量(liang)(liang)輸出。其(qi)原因是(shi)(shi)控制(zhi)器(qi)的(de)(de)(de)(de)(de)(de)位(wei)置偏離、松動(dong)或(huo)(huo)損(sun)傷，需(xu)要重新調零(ling)、緊(jin)(jin)固或(huo)(huo)更(geng)換。泵(beng)(beng)(beng)(beng)(beng)的(de)(de)(de)(de)(de)(de)角(jiao)度(du)維(wei)持力不(bu)夠、傾(qing)(qing)斜(xie)角(jiao)耳軸(zhou)磨損(sun)也會產生這種現(xian)象(xiang)(xiang)。

*原裝美國parker變量柱塞泵現貨供應，

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