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簡要描述:*德國Rexroth力士樂4通伺服閥/力士樂伺服閥格 REXROTH4通伺服閥*級(jí)液壓放大的噴嘴磨損或噴嘴部分堵塞;滑閥卡澀;滑閥凸肩的銳邊磨損;EH壓力至左右側(cè)油室的縮孔部分堵塞;伺服閥機(jī)械零偏調(diào)整不準(zhǔn)確。這些原因都有可能造成滑閥凸肩不能封堵住壓力油的進(jìn)油口和有壓回油的泄油口,使滑閥發(fā)生往復(fù)動(dòng)作,油動(dòng)機(jī)下油缸不斷處于進(jìn)油或泄油的過程,隨著伺服閥泄漏量的增加,伺服卡與伺服閥
品牌 | REXROTH/德國力士樂 |
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*德國Rexroth力士樂4通伺服閥/力士樂伺服閥格
,在高壓EH油的沖蝕下,滑閥凸肩的銳邊將會(huì)被磨損,進(jìn)步加重伺服閥的泄漏量,汽門的抖動(dòng)幅度也將迸步增大,這種惡性循環(huán)使得油動(dòng)機(jī)的下油缸不停的進(jìn)油和泄油,調(diào)門也隨之開和關(guān),zui終引發(fā)調(diào)節(jié)汽門大幅抖動(dòng)的故障。3號(hào)調(diào)節(jié)汽門在靜態(tài)調(diào)試階段曾發(fā)現(xiàn)伺服閥機(jī)械零偏有偏差,機(jī)械零偏使3號(hào)調(diào)門有輕微的晃動(dòng)現(xiàn)象,臨時(shí)對機(jī)械零偏進(jìn)行了調(diào)整,消除了晃動(dòng)現(xiàn)象,但由于沒有經(jīng)過校驗(yàn)臺(tái)的校驗(yàn),機(jī)械零偏的調(diào)整精度不高。所以對于3號(hào)調(diào)節(jié)汽門伺服閥,經(jīng)過段時(shí)間的使用,其滑閥凸肩的銳邊磨損應(yīng)當(dāng)是比較嚴(yán)重的。故障后,將3號(hào)調(diào)節(jié)汽門的伺服閥拆下,送返至上汽廠清洗檢修,檢測結(jié)果與我們的判斷是*的,滑閥凸肩的銳邊已磨損,無法修復(fù),由重新?lián)Q了新的伺服閥。力士樂REXROTH伺服閥特殊用途的特殊材料。德國如紅寶石噴嘴擋板材料,以防止體噴嘴飼料造成傷害和擋板,以減少靜態(tài)和動(dòng)態(tài)性能,因此,縮短工作生活。機(jī)械反饋桿球頭也生產(chǎn)紅寶石,和緩沖,以防止球的小槽之間的磨損,因此,失去控制的閥門,并有尖叫聲。
*德國Rexroth力士樂4通伺服閥/力士樂伺服閥格
4通伺服閥
規(guī)格10
元件系列5X
zui大工作壓力315 bar
zui大流量180 l/min
應(yīng)用根據(jù)防爆指示94/9/EC
適用于美國FM許可"VH1"
環(huán)境溫度范圍–20 °C至60 °C
R900637136 DUESE 0,3 M8X1,0 X17,5 SW3 4WS2EM10-42/
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