疊加式單向閥Z1S6P30-40/V

疊加式單向閥Z1S6P30-40/V，力士樂單向閥，德國REXROTH疊加式單向閥，武漢百士自動化設(shè)備有限公司主營銷售產(chǎn)品，原廠原裝，客戶買的安心，用的放心。價格優(yōu)惠，現(xiàn)貨供應(yīng)，歡迎新老客戶詢價采購！

 

 

機(jī)械壓力機(jī)，機(jī)械壓力機(jī)用曲柄連桿或肘桿機(jī)構(gòu)、凸輪機(jī)構(gòu)、螺桿機(jī)構(gòu)傳動，工作平穩(wěn)，工作精度高，操作條件好，生產(chǎn)率高，易于實現(xiàn)機(jī)械化、自動化，適于在自動線上工作。機(jī)械壓力機(jī)在數(shù)量上居各類鍛壓機(jī)械之首。冷鐓機(jī)等各種線材成形自動機(jī)、平鍛機(jī)、螺旋壓力機(jī)、徑向鍛造機(jī)、大多數(shù)彎曲機(jī)、矯正機(jī)和剪切機(jī)也具有與機(jī)械壓力機(jī)相似的傳動機(jī)構(gòu)，可以說是機(jī)械壓力機(jī)的派生系列。

機(jī)械壓力機(jī)工作原理

是用曲柄連桿或肘桿機(jī)構(gòu)、凸輪機(jī)構(gòu)、螺桿機(jī)構(gòu)傳動，工作平穩(wěn)、工作精度高、操作條件好、生產(chǎn)率高，易于實現(xiàn)機(jī)械化、自動化，適于在自動線上工作。機(jī)械壓力機(jī)在數(shù)量上居各類鍛壓機(jī)械之首。冷鐓機(jī)等各種線材成形自動機(jī)、平鍛機(jī)、螺旋壓力機(jī)、徑向鍛造機(jī)、大多數(shù)彎曲機(jī)、矯正機(jī)和剪切機(jī)等，也具有與機(jī)械壓力機(jī)相似的傳動機(jī)構(gòu)，可以說是機(jī)械壓力機(jī)的派生系列。行程是可變的，能夠在任意位置發(fā)出大的工作力。液壓機(jī)工作平穩(wěn)，沒有震動，容易達(dá)到較大的鍛造高層度，適合于大鍛件的鍛造和大規(guī)格板料的拉深、打包和壓塊等工作。液壓機(jī)主要包括水壓機(jī)和油壓機(jī)。某些彎曲、矯正、剪切機(jī)械也屬于液壓機(jī)一類。

 

液壓機(jī)，以高壓液體（油、乳化液等）傳送工作壓力的鍛壓機(jī)械。液壓機(jī)的行程是可變的，能夠在任意位置發(fā)出大的工作力。液壓機(jī)工作平穩(wěn)，沒有震動，容易達(dá)到較大的鍛造高層度，適合于大鍛件的鍛造和大規(guī)格板料的拉深、打包和壓塊等工作。液壓機(jī)主要包括水壓機(jī)和油壓機(jī)。某些彎曲、矯正、剪切機(jī)械也屬于液壓機(jī)一類。

液壓機(jī)工作原理

利用帕斯卡定律制成的利用液體壓強(qiáng)傳動的機(jī)械，種類很多。當(dāng)然，用途也根據(jù)需要是多種多樣的。如按傳遞壓強(qiáng)的液體種類來分，有油壓機(jī)和水壓機(jī)兩大類。水壓機(jī)產(chǎn)生的總壓力較大，常用于鍛造和沖壓。鍛造水壓機(jī)又分為模鍛水壓機(jī)和自由鍛水壓機(jī)兩種。模鍛水壓機(jī)要用模具，而自由鍛水壓機(jī)不用模具。

液控單向閥是依靠控制流體壓力，可以使單向閥反向流通的閥。這種閥在煤礦機(jī)械的液壓支護(hù)設(shè)備中占有較重要的地位。液控單向閥與普通單向閥不同之處是多了一個控制油路K，當(dāng)控制油路未接通壓力油液時，液控單向閥就象普通單向閥一樣工作，壓力油只從進(jìn)油口流向出油口，不能反向流動。當(dāng)控制油路油控制壓力輸入時，活塞頂桿在壓力油作用下向右移動，用頂桿頂開單向閥，使進(jìn)出油口接通。若出油口大于進(jìn)油口就能使油液反向流動。

 

 

結(jié)構(gòu)與工作原理:

錐閥結(jié)構(gòu)的液控單向閥，它可以由液壓開啟而允許油液在閉鎖方向自由流通。

此類閥用于有液壓回路部分的隔離，以避免管路破裂時負(fù)載失壓，或避免執(zhí)行器在液壓閉鎖時因滑閥泄漏引起的爬行或漂移。

該閥的組成主要包括閥體(1) 、閥芯(2)、壓縮彈簧(3)和控制活塞(4)

液控單向閥

基本功能:

可以由液壓開啟而允許反向流動，用來隔離局部壓力回路，即作為在管子破裂時防止負(fù)載降落的保護(hù)，也可防止負(fù)載下爬。

疊加式單向閥Z1S6P30-40/V

力士樂REXROTH開/關(guān)閥

力士樂REXROTH截止閥

力士樂REXROTH疊加式單向閥Z1S 6

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力士樂REXROTH止回閥Z1SRA

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液壓泵控制系統(tǒng)

力士樂挖掘機(jī)液壓泵控制系統(tǒng)有不同的配置,具有不同的控制功能。

恒功率閥和杠桿式恒功率裝置

恒功率閥是二位三通閥。在彈簧力作用下，恒功率閥處于右位,下油缸壓力油通過恒功率閥回油，在上油缸腔內(nèi)油壓和彈簧作用下油泵向大流量方向擺動。油泵壓力油通過上油缸腔作用在頂桿上，頂桿頂推杠桿使杠桿繞支點擺動，推動A閥向右移動，使恒功率閥處于左位，油泵壓力油通過恒功率閥經(jīng)閥進(jìn)入下油缸，推動其活塞桿，克服上油缸液壓力并壓縮彈簧使油泵向小流量方向擺動。同時由于上油缸活塞桿右移，頂.桿頂推杠桿的力臂減小，使杠桿推A閥的力下降，直至與A閥彈簧力相等，油泵擺角處于新的平衡位置。

 

這種恒功率裝置通過杠桿機(jī)構(gòu)來實現(xiàn)，只要杠桿系統(tǒng)設(shè)計得好，就能實現(xiàn)很理想的恒功率曲線。

油泵流量調(diào)節(jié)閥為二位三通閥，閥的左端受泵的出口油壓Pp作用，閥的右端受多路閥負(fù)載敏感腔的油壓PLmax和彈簀力FS2作用，此閥的作用是設(shè)定系統(tǒng)的補(bǔ)償壓力。流量調(diào)節(jié)閥的作用是使系統(tǒng)壓差OP ( P -PLmax) 保持定值。OP由設(shè)計確定稱為系統(tǒng)的補(bǔ)償壓差，是系統(tǒng)各操縱閥的進(jìn)口壓加P與出口壓力Pm ( = PLmax) 之差，各操縱閥在保持補(bǔ)償壓差一定條件下，通過改變閥桿的開口面積來控制去各液壓作用元件的流量。系統(tǒng)通過油泵流量調(diào)節(jié)，按司機(jī)操縱閥桿的開度大小，提供所需流量，而且只供給比負(fù)載稍高一點(△P)的油壓。避免了系統(tǒng)的流量損失和過大的壓力損失。當(dāng)彈簧力和閥的受壓面積在設(shè)計時取定后，LRS 油泵控制系統(tǒng)是不變的，因此恒功率閥設(shè)定功率是不變的。油泵流量調(diào)節(jié)閥設(shè)定的補(bǔ)償壓力也是不變的，雖然可以停機(jī)通過調(diào)整彈簧來改變功率設(shè)定和補(bǔ)償壓力設(shè)定，但顯然是不方便和不理想的，但實際挖掘機(jī)工作中需要改變功率和改變補(bǔ)償壓力，這是LRS 系統(tǒng)的不足之處。

裝載機(jī)是一種廣泛用于公路、****、建筑、水電、港口、礦山等建設(shè)工程的土石方施工機(jī)械，它主要用于鏟裝土壤、砂石、石灰、煤炭等散狀物料，也可對礦石、硬土等作輕度鏟挖作業(yè)。換裝不同的輔助工作裝置還可進(jìn)行推土、起重和其他物料如木材的裝卸作業(yè)。

在道路、特別是在高等級公路施工中，裝載機(jī)用于路基工程的填挖、瀝青混合料和水泥混凝土料場的集料與裝料等作業(yè)。此外還可進(jìn)行推運(yùn)土壤、刮平地面和牽引其他機(jī)械等作業(yè)。由于裝載機(jī)具有作業(yè)速度快、效率高、機(jī)動性好、操作輕便等優(yōu)點，因此它成為工程建設(shè)中土石方施工的主要機(jī)種之一。

 

包括發(fā)動機(jī)，變矩器，變速箱，前、后驅(qū)動橋，簡稱四大件1. 發(fā)動機(jī)2. 變矩器上有三個泵，工作泵（供應(yīng)舉升，翻斗壓力油）轉(zhuǎn)向泵（供應(yīng)轉(zhuǎn)向壓力油）變速泵也稱行走泵（供 應(yīng)變矩器，變速箱壓力油），有些機(jī)型轉(zhuǎn)向泵上還裝有先導(dǎo)泵（供應(yīng)操縱閥先導(dǎo)壓力油）3.工作液壓油路，液壓油箱，工作泵，多路閥，舉升油缸和翻斗油缸4. 行走油路：變速箱油底殼油，行走泵，一路進(jìn)變矩器一路進(jìn)檔位閥，變速箱離合器5. 驅(qū)動：傳動軸，主差速器，輪邊減速器6. 轉(zhuǎn)向油路：油箱，轉(zhuǎn)向泵，穩(wěn)流閥（或者優(yōu)先閥）轉(zhuǎn)向器，轉(zhuǎn)向油缸7. 變速箱有一體的（行星式）和分體（定軸式）兩種。

 

林業(yè)機(jī)械是用于營林（包括造林、育林和護(hù)林）、木材切削和林業(yè)起重輸送的機(jī)械。廣義的林業(yè)機(jī)械還包括木材加工機(jī)械、人造板機(jī)械和林產(chǎn)化工設(shè)備等綜合利用機(jī)械。林業(yè)機(jī)械大多是在移動情況下進(jìn)行露天作業(yè)，因受自然條件的影響而具有一定的區(qū)域性。營林機(jī)械包括種子采集和處理、林地清理、整地、育苗、中幼林撫育和林木保護(hù)等作業(yè)用的機(jī)械。其中常用的有采種機(jī)、割灌機(jī)、挖坑機(jī)、筑床機(jī)、插條機(jī)、植樹機(jī)等。