力士樂溢流閥R900409959

力士樂溢流閥R900409959 ZDB10VP2-41/100V，德國(guó)REXROTH疊加式溢流閥，武漢百士自動(dòng)化設(shè)備有限公司主營(yíng)銷售產(chǎn)品，原廠原裝，拒絕假貨，客戶買的安心，用的放心。價(jià)格優(yōu)惠，常用產(chǎn)品現(xiàn)貨供應(yīng)，歡迎新老客戶詢價(jià)采購！

DB/DBW型先導(dǎo)溢流閥

1.結(jié)構(gòu)和工作原理

DB型閥是先導(dǎo)控制式的溢流閥; DBW型閥是先導(dǎo)控制式的電磁溢閥。DB

型閥是用來控制液壓系統(tǒng)的壓力; DBW型閥也可以控制液壓系統(tǒng)的壓力，并且能在任意時(shí)刻使系統(tǒng)卸荷。

DB型閥主要是由先導(dǎo)閥和主閥組成。DBW型閥是由電磁換向閥、先導(dǎo)閥和主閥組成。

DB型溢流閥:

閥腔的壓力油作用在主閥芯下端的同時(shí)，通過阻尼器和通道作用在主閥芯上端和先導(dǎo)閥的錐閥上。當(dāng)系統(tǒng)壓力超過彈簧的調(diào)定值時(shí)，錐閥被打開。同時(shí)主閥芯上端的壓力油通過阻尼器、通道、彈簧腔及通道流回B腔(控制油內(nèi)排型)或通過外排口流回油箱(控制油外排型)。這樣，當(dāng)壓力油通過阻尼器時(shí)在主閥芯上產(chǎn)生了一個(gè)壓力差，主閥芯在這個(gè)壓差的作用下打開，這樣在調(diào)定的工作壓力下壓力油從A腔流到B腔(即卸荷)。

DBW型電磁溢流閥:

此閥工作原理與DB型閥相同，只是可通過安裝在先導(dǎo)閥上的電磁換向閥使系統(tǒng)在任意時(shí)刻卸荷。

DB/DBW型閥均設(shè)有控制油內(nèi)部供油道和內(nèi)部排油道控制油外供口和外排口。這樣就可根據(jù)控制油供給和排出的不同形式的組合內(nèi)供內(nèi)排、外供內(nèi)排、內(nèi)供外排和外供外排4種型式。

液壓傳動(dòng)技術(shù)在機(jī)械中的應(yīng)用.

驅(qū)動(dòng)機(jī)械運(yùn)動(dòng)的機(jī)構(gòu)以及各種傳動(dòng)和操縱裝置有多中形式。根據(jù)所用的不見和零件，可分為機(jī)械的、電氣的、氣動(dòng)的、液壓的傳動(dòng)裝置。經(jīng)常還將不同的形式組合起來運(yùn)用一四位一體。由于液壓傳動(dòng)具有很多優(yōu)點(diǎn)，使這種新技術(shù)發(fā)展的很快。液壓傳動(dòng)應(yīng)用與金屬切割機(jī)床也不過四五十年的歷史。航空工業(yè)在1930年以后才開始采用。特別是近二三十年一來液壓技術(shù)在各種工業(yè)中的應(yīng)用越來越廣泛。

1、在機(jī)床上，液壓傳動(dòng)常應(yīng)用在以下的- -些裝置中

1.1進(jìn)給 傳動(dòng)裝置磨床砂輪架和工作臺(tái)的進(jìn)給運(yùn)動(dòng)大部分采用液壓傳動(dòng);車床、六角車床、自動(dòng)車床的刀架或轉(zhuǎn)塔刀架，銑床、刨床、組合機(jī)床的工作臺(tái)等的進(jìn)給運(yùn)動(dòng)也都采用液壓傳動(dòng)。這些部件有的要求快速移動(dòng)，有的要求慢速移動(dòng)。有的既要求快速移動(dòng)，也要求慢速移動(dòng)。這些運(yùn)動(dòng)多半要求有較大的調(diào)速范圍，要求在工作中無級(jí)調(diào)速;有的要求持續(xù)進(jìn)給，有的要求間歇進(jìn)給;有的要求在負(fù)載變化下速度恒定，有的要求有良好的換向性能等等。所有這些要求都是可以用液壓傳動(dòng)來實(shí)現(xiàn)的。

1.2往復(fù)主題運(yùn)動(dòng)傳動(dòng)裝置龍i刨床的工作臺(tái)、牛頭刨床或插床的滑枕，由于要求作高速往復(fù)直線運(yùn)動(dòng)并且要求換向沖擊小、換向時(shí)間短、能耗低，因此都可以采用液壓傳動(dòng)。

1.3仿形裝置車床、銑床、刨床上的仿形加工可以采用液壓伺服系統(tǒng)來完成。起精度可達(dá)0.01-0. 02m。此外，磨床上的成型砂輪修正裝置亦可采用這系統(tǒng)。

1.4 輔助裝置機(jī)床上的夾緊裝置、齒輪箱變速操縱裝置、絲桿螺母間隙消除裝置、垂直移動(dòng)部件平衡裝置、分度裝置、工件和****裝卸裝置、工件輸送裝置等，采用液壓傳動(dòng)，有利于簡(jiǎn)化機(jī)床結(jié)構(gòu)，提高機(jī)床自動(dòng)化程度。

1.5靜壓支承重型機(jī)床、高速機(jī)床、高精度機(jī)床上的軸承、導(dǎo)軌、絲桿螺母機(jī)構(gòu)等處采用液壓靜支承后，可以提高工作平穩(wěn)性和運(yùn)動(dòng)精度。

2、液壓傳動(dòng)技術(shù)在工程機(jī)械行走驅(qū)動(dòng)中的應(yīng)用

行走驅(qū)動(dòng)系統(tǒng)是工程機(jī)械的重要組成部分。與工作系統(tǒng)相比，行走驅(qū)動(dòng)系統(tǒng)不僅需要傳輸更大的功率，要求器件具有更高的效率和更長(zhǎng)的壽命，還希望在變速調(diào)速、差速、改變輸出軸旋轉(zhuǎn)方向及反向傳輸動(dòng)力等方****有良好的能力。于是，采用何種傳動(dòng)方式，如何更好地滿足各種工程機(jī)械行走驅(qū)動(dòng)的需要，-直是工程機(jī)械行業(yè)所要面對(duì)的課題。尤其是近年來，隨著我國(guó)交通、能源等基礎(chǔ)設(shè)施建設(shè)進(jìn)程的快速發(fā)展，建筑施工和資源開發(fā)規(guī)模不斷擴(kuò)大，工程機(jī)械在市場(chǎng)需求大大增強(qiáng)的同時(shí)，更面臨著作業(yè)環(huán)境更為苛刻、工沉條件更為復(fù)雜等所帶來的挑戰(zhàn)，也進(jìn)一步推動(dòng)著對(duì)其行走驅(qū)動(dòng)系統(tǒng)的深入研究。

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德國(guó)力士樂REXROTH溢流閥訂貨號(hào)物料號(hào)和型號(hào)：

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力士樂REXROTH先導(dǎo)式溢流閥DB.K

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R901135787 DB6K2-4X/80YV

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R900517816 DB6K7-4X/350YV

R901031315 DB6K7-4X/50Y

R900438028 DB6K7-4X/50YV

鍛壓機(jī)床

鍛壓機(jī)床是金屬和機(jī)械冷加工用的設(shè)備，他只改變金屬的外形狀。鍛壓機(jī)床包括卷板機(jī)，剪板機(jī)，沖床，壓力機(jī)，液壓機(jī)，油壓機(jī)，折彎?rùn)C(jī)等。

 

液壓機(jī)是一種以液體為工作介質(zhì)，根據(jù)帕斯卡原理制成的用于傳遞能量以實(shí)現(xiàn)各種工藝的機(jī)器。液壓機(jī)一般由本機(jī)（主機(jī)）、動(dòng)力系統(tǒng)及液壓控制系統(tǒng)三部分組成。液壓機(jī)分類有閥門液壓機(jī)，液體液壓機(jī)，工程液壓機(jī)。

 

液壓機(jī)（又名：油壓機(jī)）液壓機(jī)是一種利用液體靜壓力來加工金屬、塑料、橡膠、木材、粉末等制品的機(jī)械。它常用于壓制工藝和壓制成形工藝，如：鍛壓、沖壓、冷擠、校直、彎曲、翻邊、薄板拉深、粉末冶金、壓裝等等。

它的原理是利用帕斯卡定律制成的利用液體壓強(qiáng)傳動(dòng)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。

 

液壓機(jī)是一種以液體為工作介質(zhì)，用來傳遞能量以實(shí)現(xiàn)各種工藝的機(jī)器。液壓機(jī)除用于鍛壓成形外，也可用于矯正、壓裝、打包、壓塊和壓板等。液壓機(jī)包括水壓機(jī)和油壓機(jī)。以水基液體為工作介質(zhì)的稱為水壓機(jī),以油為工作介質(zhì)的稱為油壓機(jī)。液壓機(jī)的規(guī)格一般用公稱工作力（千牛）或公稱噸位（噸）表示。鍛造用液壓機(jī)多是水壓機(jī)，噸位較高。為減小設(shè)備尺寸，大型鍛造水壓機(jī)常用較高壓強(qiáng)（35兆帕左右），有時(shí)也采用 100兆帕以上的非常高壓。其他用途的液壓機(jī)一般采用 6～25兆帕的工作壓強(qiáng)。油壓機(jī)的噸位比水壓機(jī)低。

 

基本原理是油泵把液壓油輸送到集成插裝閥塊，通過各個(gè)單向閥和溢流閥把液壓油分配到油缸的上腔或者下腔，在高壓油的作用下，使油缸進(jìn)行運(yùn)動(dòng).液壓機(jī)是 利用液體來傳遞壓力的設(shè)備。液體在密閉的容器中傳遞壓力時(shí)是遵循帕斯卡定律。四柱液壓機(jī)的液壓傳動(dòng)系統(tǒng)由動(dòng)力機(jī)構(gòu)、控制機(jī)構(gòu)、執(zhí)行機(jī)構(gòu)、輔助機(jī)構(gòu)和工作介質(zhì)組成。動(dòng)力機(jī)構(gòu)通常采用油泵作為動(dòng)力機(jī)構(gòu)，一般為積式油泵。為了滿足執(zhí)行機(jī)構(gòu)運(yùn)動(dòng)速度的要求， 選用一個(gè)油泵或多個(gè)油泵。低壓（油壓小于2.5MP）用齒輪泵；中壓（油壓小于6.3MP）用葉片泵；高壓（油壓小于32.0MP)用柱塞泵。各種可塑性 材料的壓力加工和成形，如不銹鋼板的擠壓、彎曲、拉深及金屬零件的冷壓成形，同時(shí)亦可用于粉末制品、砂輪、膠木、樹脂熱固性制品的壓制。

 

驅(qū)動(dòng)系統(tǒng)

液壓機(jī)的驅(qū)動(dòng)系統(tǒng)主要有泵直接驅(qū)動(dòng)和泵-蓄能器驅(qū)動(dòng)兩種型式。泵直接驅(qū)動(dòng)，這種驅(qū)動(dòng)系統(tǒng)的泵向液壓缸提供高壓工作液體，配流閥用來改變供液方向，溢流閥用來調(diào)節(jié)系統(tǒng)的限定壓強(qiáng)，同時(shí)起安全溢流作用。這種驅(qū)動(dòng)系統(tǒng)環(huán)節(jié)少,結(jié)構(gòu)簡(jiǎn)單,壓強(qiáng)能按所需的工作力自動(dòng)增減，減少了電能消耗，但須由液壓機(jī)的大工作力和高工作速度來決定泵及其驅(qū)動(dòng)電機(jī)的容量。這種型式的驅(qū)動(dòng)系統(tǒng)多用于中小型液壓機(jī)，也有用泵直接驅(qū)動(dòng)的大型（如120000千牛）自由鍛造水壓機(jī)。

德國(guó)力士樂REXROTH溢流閥訂貨號(hào)物料號(hào)和型號(hào)：

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R900967526 ZDB10VP1-41/50

R900520338 ZDB10VP1-41/50V

R900431065 ZDB10VP2-41/100

自動(dòng)化控制有半自動(dòng)與全自動(dòng)化，自動(dòng)化控制是一種現(xiàn)代工業(yè)、農(nóng)業(yè)、制造業(yè)等生產(chǎn)領(lǐng)域中機(jī)械電氣一體自動(dòng)化集成控制技術(shù)和理論

 

自動(dòng)化控制有半自動(dòng)與全自動(dòng)化；例如：機(jī)器、設(shè)備可以按照生產(chǎn)的要求和目的，進(jìn)行自動(dòng)化生產(chǎn)；全自動(dòng)人只需要作為操作員，確定控制的要求和程序，不用直接參與生產(chǎn)過程的控制技術(shù)；半自動(dòng)化控制要人通過設(shè)施、設(shè)備、機(jī)械、儀器或手工等勞動(dòng)力的參與。

 

過程自動(dòng)化

石油煉制和化工等工業(yè)中流體或粉體的化學(xué)處理的自動(dòng)化控制。一般采用由檢測(cè)儀表、調(diào)節(jié)器和計(jì)算機(jī)等組成的過程控制系統(tǒng)，對(duì)加熱爐、精餾塔等設(shè)備或整個(gè)工廠進(jìn)行優(yōu)控制。采用的主要控制方式有反饋控制、前饋控制和優(yōu)控制等。

機(jī)械制造自動(dòng)化

這是機(jī)械化、電氣化與自動(dòng)控制相結(jié)合的結(jié)果，處理的對(duì)象是離散工件。早期的機(jī)械制造自動(dòng)化是采用機(jī)械或電氣部件的單機(jī)自動(dòng)化或是簡(jiǎn)單的自動(dòng)生產(chǎn)線。由于電子計(jì)算機(jī)的應(yīng)用，出現(xiàn)了數(shù)控機(jī)床、加工中心、機(jī)器人、計(jì)算機(jī)輔助設(shè)計(jì)、計(jì)算機(jī)輔助制造、自動(dòng)化倉庫等。研制出適應(yīng)多品種、小批量生產(chǎn)型式的柔性制造系統(tǒng)（FMS）。以柔性制造系統(tǒng)為基礎(chǔ)的自動(dòng)化車間，加上信息管理、生產(chǎn)管理自動(dòng)化，出現(xiàn)了采用計(jì)算機(jī)集成制造系統(tǒng)（CIMS）的工廠自動(dòng)化控制系統(tǒng)。

自動(dòng)控制能自動(dòng)調(diào)節(jié)、檢測(cè)、加工的機(jī)器設(shè)備、儀表，按規(guī)定的程序或指令自動(dòng)進(jìn)行作業(yè)的技術(shù)措施。其目的在于增加產(chǎn)量、提高質(zhì)量、降低成本和勞動(dòng)強(qiáng)度、保障生產(chǎn)安全等。