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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油口和有壓回油的泄油口,使滑閥發(fā)生往復(fù)動作,油動機下油缸不斷處于進油或泄油的過程,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被磨損,進步加重伺服閥的泄漏量,汽門的抖動幅度也將迸步增大,這種惡性循環(huán)使得油動機的下油缸不停的進油和泄油,調(diào)門也隨之開和關(guān),zui終引發(fā)調(diào)節(jié)汽門大幅抖動的故障。3號調(diào)節(jié)汽門在靜態(tài)調(diào)試階段曾發(fā)現(xiàn)伺服閥機械零偏有偏差,機械零偏使3號調(diào)門有輕微的晃動現(xiàn)象,臨時對機械零偏進行了調(diào)整,消除了晃動現(xiàn)象,但由于沒有經(jīng)過校驗臺的校驗,機械零偏的調(diào)整精度不高。所以對于3號調(diào)節(jié)汽門伺服閥,經(jīng)過段時間的使用,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)和動態(tài)性能,因此,縮短工作生活。機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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