力士樂REXROTH方向比例閥上海供應(yīng)，力士樂方向比例閥運(yùn)行原理：
德國(guó)REXROTH力士樂比例閥當(dāng)左側(cè)受力大于右側(cè)受力與感載彈簧預(yù)緊力之和時(shí)（此時(shí)的壓力為Ps）,活塞不斷右移,Z后使閥門與閥座接觸而關(guān)閉,將輸入輸出油路隔絕,達(dá)到平衡狀態(tài)。P1若進(jìn)一步升高時(shí),則活塞左移,閥門再度打開,制動(dòng)液流入出油口,使P2也升高。Rexroth比例閥VT-NE30-2X的輸入壓力為零 即 ;時(shí),輸出腔的壓力通過

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力士樂REXROTH方向比例閥上海供應(yīng)，力士樂方向比例閥：
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，力士樂方向比例閥運(yùn)行原理：
德國(guó)REXROTH力士樂比例閥當(dāng)左側(cè)受力大于右側(cè)受力與感載彈簧預(yù)緊力之和時(shí)(此時(shí)的壓力為Ps),活塞不斷右移,zui后使閥門與閥座接觸而關(guān)閉,將輸入輸出油路隔絕,達(dá)到平衡狀態(tài)。P1若進(jìn)一步升高時(shí),則活塞左移,閥門再度打開,制動(dòng)液流入出油口,使P2也升高。Rexroth比例閥VT-NE30-2X的輸入壓力為零 即 ;時(shí),輸出腔的壓力通過比例閥皮圈凸筋間空酸從唇口泄去高壓,同時(shí),當(dāng)比例閥芯所受的彈簧力大于向右的液壓力時(shí),比例閥彈簧將比例閥芯推回原始位置,使比例閥芯與比例閥皮圈內(nèi)孔*分離而*泄壓 此時(shí)輸入輸出壓力為零 隨著輸入壓力 增大,即左增大,使比例滑閥單向力平衡遭破壞 當(dāng)<>&;6-時(shí),比例閥芯左移與比例閥皮圈產(chǎn)生間隙形成節(jié)流并混合比倒閥常見的故障為:1,輸入輸出壓力同步 2,低壓時(shí)輔人輸出壓力同步,高壓時(shí)輸入輸出壓力正常 3,低壓時(shí)輸入輸出壓力正常,高壓時(shí)輸入輸出壓力不正常 ,1994 №為零時(shí)為混合比倒圉工作性能試驗(yàn)，試驗(yàn)時(shí),先將管內(nèi)的空氣排凈,然后分別取低,中,高三個(gè)壓力進(jìn)行試驗(yàn),輸入輔出壓力符合即為合格。