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力(li)士(shi)樂(le)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)也分為直動(dong)式(shi)(shi)和先導(dao)式(shi)(shi)兩種,一般(ban)常用(yong)(yong)力(li)士(shi)樂(le)先導(dao)式(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)。圖(tu)5-15(a)所示為先導(dao)式(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)的(de)(de)結(jie)構口(kou)(kou)(kou)一次(ci)壓(ya)(ya)(ya)(ya)力(li)油(you)(you)(you)(you)(you)p1由(you)進(jin)油(you)(you)(you)(you)(you)口(kou)(kou)(kou)進(jin)人(ren)。經(jing)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)口(kou)(kou)(kou)變為P2從(cong)出(chu)(chu)油(you)(you)(you)(you)(you)口(kou)(kou)(kou)流出(chu)(chu),P2同時(shi)經(jing)閥(fa)(fa)(fa)體(ti)6下(xia)(xia)部和端(duan)(duan)蓋8.上(shang)(shang)通道至主(zhu)(zhu)閥(fa)(fa)(fa)芯(xin)7下(xia)(xia)腔(qiang),并通過主(zhu)(zhu)閥(fa)(fa)(fa)芯(xin)上(shang)(shang)的(de)(de)阻(zu)尼孔(kong)9作(zuo)用(yong)(yong)于(yu)(yu)先導(dao)閥(fa)(fa)(fa)3的(de)(de)右腔(qiang),然后通過錐閥(fa)(fa)(fa)座(zuo)4的(de)(de)阻(zu)尼孔(kong)作(zuo)用(yong)(yong)在錐閥(fa)(fa)(fa)上(shang)(shang)。當出(chu)(chu)口(kou)(kou)(kou)壓(ya)(ya)(ya)(ya)力(li)P2于(yu)(yu)調(diao)定(ding)(ding)(ding)值時(shi)。錐閥(fa)(fa)(fa)關閉、主(zhu)(zhu)閥(fa)(fa)(fa)芯(xin)上(shang)(shang)下(xia)(xia)腔(qiang)油(you)(you)(you)(you)(you)壓(ya)(ya)(ya)(ya)相等,彈簧10使主(zhu)(zhu)閥(fa)(fa)(fa)芯(xin)處于(yu)(yu)下(xia)(xia)端(duan)(duan).閥(fa)(fa)(fa)口(kou)(kou)(kou)全開,不起減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)作(zuo)用(yong)(yong)。當力(li)士(shi)樂(le)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)的(de)(de)出(chu)(chu)口(kou)(kou)(kou)壓(ya)(ya)(ya)(ya)力(li)上(shang)(shang)升(sheng)至超(chao)過調(diao)壓(ya)(ya)(ya)(ya)彈簧11所調(diao)定(ding)(ding)(ding)的(de)(de)壓(ya)(ya)(ya)(ya)力(li)時(shi).錐閥(fa)(fa)(fa)打開。油(you)(you)(you)(you)(you)液經(jing)先導(dao)閥(fa)(fa)(fa)和泄(xie)油(you)(you)(you)(you)(you)日流回(hui)油(you)(you)(you)(you)(you)箱,由(you)于(yu)(yu)阻(zu)尼孔(kong)的(de)(de)作(zuo)用(yong)(yong)產(chan)生壓(ya)(ya)(ya)(ya)降,當主(zhu)(zhu)閥(fa)(fa)(fa)芯(xin)上(shang)(shang)下(xia)(xia)腔(qiang)的(de)(de)壓(ya)(ya)(ya)(ya)差作(zuo)用(yong)(yong)力(li)大于(yu)(yu)彈簧10的(de)(de)預(yu)緊力(li)時(shi),主(zhu)(zhu)閥(fa)(fa)(fa)芯(xin)7上(shang)(shang)升(sheng)使減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)口(kou)(kou)(kou)縫隙減(jian)(jian)(jian)小,液阻(zu)增大.致使出(chu)(chu)口(kou)(kou)(kou)壓(ya)(ya)(ya)(ya)力(li)P2下(xia)(xia)降。反之,則使出(chu)(chu)口(kou)(kou)(kou)回(hui)升(sheng)。這樣就能夠通過自動(dong)調(diao)節(jie)(jie)閥(fa)(fa)(fa)口(kou)(kou)(kou)開度(du),來保持出(chu)(chu)口(kou)(kou)(kou)壓(ya)(ya)(ya)(ya)力(li)穩定(ding)(ding)(ding)在調(diao)定(ding)(ding)(ding)值上(shang)(shang)。力(li)士(shi)樂(le)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)的(de)(de)閥(fa)(fa)(fa)口(kou)(kou)(kou)為常開型。由(you)于(yu)(yu)進(jin)出(chu)(chu)油(you)(you)(you)(you)(you)口(kou)(kou)(kou)均接壓(ya)(ya)(ya)(ya)力(li)油(you)(you)(you)(you)(you),所以(yi)泄(xie)油(you)(you)(you)(you)(you)口(kou)(kou)(kou)要單獨(du)接油(you)(you)(you)(you)(you)箱。調(diao)節(jie)(jie)先導(dao)閥(fa)(fa)(fa)彈簧壓(ya)(ya)(ya)(ya)緊力(li)就可(ke)以(yi)調(diao)節(jie)(jie)力(li)士(shi)樂(le)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)控制(zhi)壓(ya)(ya)(ya)(ya)力(li)。
技術特征
疊加閥
在A、B或(huo)P通道內減壓。
單向(xiang)閥,可選(型號"A")
4種壓力等級。
4種(zhong)調節(jie)方式(shi),可選(xuan):一個(ge)旋鈕(niu),一個(ge)六角襯套和一個(ge)保護蓋;一個(ge)帶刻度的鎖鈕(niu)。
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R900956774 DBW20BG2-5X/200U6EG24N9K4
R900958541 DBW20BG2-5X/200US6EG24N9K4R12
R900926050 DBW20BG2-5X/50U6EG24N9K4
R900926125 DBW20BG2-5X/50X6EG24N9K4
R901077833 DBW20BG2-5X/100-6EW230N9K4V
R900747601 DBW20BG2-5X/100-6SMG24N9K4
R901251336 DBW20BG2-5X/100S6EG24N9K4R12
R900933188 DBW20BG2-5X/100U6EG24N9K4
R901033275 DBW20BG2-5X/100XU6EW230N9K4
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