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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>揚州液壓驅(qū)動系統(tǒng),液壓系統(tǒng)</p><p><span>***更新：</span>2021-01-14 13:22:14</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="822u8as" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州旭展機械有限公司</a></p><p><span>聯(lián)系人：</span>邱小姐</p><p><span>郵箱: </span>2851551878@qq.com</p><p><span>電話: </span>13812753904</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://www.xu-zhan.com</p><p><span>手機: </span>138-12753904</p><p><span>地址: </span>黃埭鎮(zhèn)東橋長旺路150號</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="udaspwd" class="page-proshow02"><p class="title">詳細說明</p><div id="84v8qfh" class="box"><p><p style="text-indent:25px">液壓系統(tǒng)動力元件：動力元件的作用是將原動機的機械能轉(zhuǎn)換成液體的壓力能，指液壓系統(tǒng)中的油泵，它向整個液壓系統(tǒng)提供動力。液壓泵的結(jié)構(gòu)形式一般有齒輪泵、葉片泵、柱塞泵和螺桿泵。執(zhí)行元件：執(zhí)行元件(如液壓缸和液壓馬達)的作用是將液體的壓力能轉(zhuǎn)換為機械能，驅(qū)動負載作直線往復(fù)運動或回轉(zhuǎn)運動?？刂圃嚎刂圃?即各種液壓閥)在液壓系統(tǒng)中控制和調(diào)節(jié)液體的壓力、流量和方向。根據(jù)控制功能的不同，液壓閥可分為壓力控制閥、流量控制閥和方向控制閥。壓力控制閥包括溢流閥(安全閥)、減壓閥、順序閥、壓力繼電器等；流量控制閥包括節(jié)流閥、調(diào)整閥、分流集流閥等；方向控制閥包括單向閥，揚州液壓驅(qū)動系統(tǒng)、液控單向閥、梭閥、換向閥等。根據(jù)控制方式不同，揚州液壓驅(qū)動系統(tǒng)，液壓閥可分為開關(guān)式控制閥，揚州液壓驅(qū)動系統(tǒng)、定值控制閥和比例控制閥。執(zhí)行元件(如液壓缸和液壓馬達)的作用是將液體的壓力能轉(zhuǎn)換為機械能，驅(qū)動負載作直線往復(fù)運動或回轉(zhuǎn)運動。揚州液壓驅(qū)動系統(tǒng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州液壓驅(qū)動系統(tǒng),液壓系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/xuzhan1996/637368875368701172/9084513.png"></div><p style="text-indent:25px">液壓系統(tǒng)氣蝕現(xiàn)象：原因：空穴伴隨著氣蝕發(fā)生，空穴中產(chǎn)生的氣泡中的氧也會腐蝕金屬元件的表面，我們把這種因發(fā)生空穴現(xiàn)象而造成的腐蝕叫氣蝕。部位：氣蝕現(xiàn)象可能發(fā)生在油泵、管路以及其他具有節(jié)流裝置的地方，特別是油泵裝置，這種現(xiàn)象較為常見。氣蝕現(xiàn)象是液壓系統(tǒng)產(chǎn)生各種故障的原因之一，特別在高速、高壓的液壓設(shè)備中更應(yīng)注意。液壓傳動系統(tǒng)由于其獨特的優(yōu)點，即具有普遍的工藝適應(yīng)性、優(yōu)良的控制性能和較低廉的成本，在各個領(lǐng)域中獲得愈來愈普遍的應(yīng)用。但由于客觀上元件、輔件質(zhì)量不穩(wěn)定和主觀上使用、維護不當(dāng)，且系統(tǒng)中各元件和工作液體都是在封閉油路內(nèi)工作，不象機械設(shè)備那樣直觀，也不象電氣設(shè)備那樣可利用各種檢測儀器方便地測量各種參數(shù),液壓設(shè)備中，*靠有限幾個壓力表、流量計等來指示系統(tǒng)某些部位的工作參數(shù)，其他參數(shù)難以測量，而且一般故障根源有許多種可能，這給液壓系統(tǒng)故障診斷帶來一定困難。揚州液壓驅(qū)動系統(tǒng)液壓系統(tǒng)在分析和設(shè)計實際任務(wù)時，一般采用方框圖顯示設(shè)備中實際運行狀況。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州液壓驅(qū)動系統(tǒng),液壓系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/xuzhan1996/637368875355410156/5647126.png"></div><p style="text-indent:25px">液壓沖擊：原因：執(zhí)行元件換向及閥門關(guān)閉使流動的液體因慣性和某些液壓元件反應(yīng)動作不夠靈敏而產(chǎn)生瞬時壓力峰值，稱液壓沖擊。其峰值可超過工作壓力的幾倍。危害：引起振動，產(chǎn)生噪聲；使繼電器、順序閥等壓力元件產(chǎn)生錯誤動作，甚至造成某些元件、密封裝置和管路損壞。措施：找出沖擊原因避免液流速度的急劇變化。延緩速度變化的時間，估算出壓力峰值，采用相應(yīng)措施。如將流動換向閥和電磁換向閥聯(lián)用，可有效地防止液壓沖擊。空穴現(xiàn)象：現(xiàn)象：如果液壓系統(tǒng)中滲入空氣，液體中的氣泡隨著液流運動到壓力較高的區(qū)域時，氣泡在較高壓力作用下將迅速破裂，從而引起局部液壓沖擊，造成噪聲和振動。另外，由于氣泡破壞了液流的連續(xù)性，降低了油管的通油能力，造成流量和壓力的波動，使液壓元件承受沖擊載荷，影響其使用壽命。</p><p style="text-indent:25px">避免液壓系統(tǒng)功率損失：如果執(zhí)行器具有調(diào)速的要求，那么在選擇調(diào)速回路時，既要滿足調(diào)速的要求，又要盡量減少功率損失。常見的調(diào)速回路主要有：節(jié)流調(diào)速回路，容積調(diào)速回路，容積節(jié)流調(diào)速回路。其中節(jié)流調(diào)速回路的功率損失大，低速穩(wěn)定性好。而容積調(diào)速回路既無溢流損失，也無節(jié)流損失，效率高，但低速穩(wěn)定性差。如果要同時滿足兩方面的要求，可采用差壓式變量泵和節(jié)流閥組成的容積節(jié)流調(diào)速回路，并使節(jié)流閥兩端的壓力差盡量小，以減小壓力損失。合理選擇液壓油。液壓油在管路中流動時，將呈現(xiàn)出黏性，而黏性過高時，將產(chǎn)生較大的內(nèi)摩擦力，造成油液發(fā)熱，同時增加油液流動時的阻力。當(dāng)黏性過低時，易造成泄漏，將降低系統(tǒng)容積效率，因此，一般選擇黏度適宜且黏溫特性比較好的油液。另外，當(dāng)油液在管路中流動時，還存在著沿程壓力損失和局部壓力損失，因此設(shè)計管路時盡量縮短管道，同時減少彎管。信號控制部分用于驅(qū)動液壓動力部分中的控制閥動作。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州液壓驅(qū)動系統(tǒng),液壓系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/xuzhan1996/637368875381396484/8293642.png"></div><p style="text-indent:25px">液壓系統(tǒng)泄漏的原因：（1）設(shè)計及制造的缺陷所造成的；（2）沖擊和振動造成管接頭松動；（3）動密封件及配合件相互磨損（液壓缸尤甚）；（4）油溫過高及橡膠密封與液壓油不相容而變質(zhì)。下面就結(jié)合以上幾個方面淺談一下控制泄漏的措施。控制液壓系統(tǒng)泄漏的控制方案：設(shè)計及制造缺陷的解決方法： 1、液壓元件外配套的選擇往往在液壓系統(tǒng)的泄漏中起著決定性的影響。這就決定我們技術(shù)人員在新產(chǎn)品設(shè)計、老產(chǎn)品的改進中，對缸、泵、閥件，密封件，液壓輔件等的選擇，要本著好中選優(yōu)，優(yōu)中選廉的原則慎重的、有比較的進行。 2、合理設(shè)計安裝面和密封面：當(dāng)閥組或管路固定在安裝面上時，為了得到滿意的初始密封和防止密封件被擠出溝槽和被磨損，安裝面要平直，密封面要求精加工，表面粗糙度要達到0．8μm，平面度要達到0．01/100mm。表面不能有徑向劃痕，連接螺釘?shù)念A(yù)緊力要足夠大，以防止表面分離。液壓動力部分采用回路圖方式表示，以表明不同功能元件之間的相互關(guān)系。揚州液壓驅(qū)動系統(tǒng)</p><p style="text-indent:25px">液壓傳動系統(tǒng)由于其獨特的優(yōu)點，即具有普遍的工藝適應(yīng)性、優(yōu)良的控制性能和較低廉的成本。揚州液壓驅(qū)動系統(tǒng)</p><p style="text-indent:25px">液壓系統(tǒng)控制油溫防止密封件變質(zhì)：密封件過早變質(zhì)可能是由多種因素引起的，一個重要因素是油溫過高。溫度每升高10℃則密封件壽命就會減半，所以應(yīng)合理設(shè)計高效液壓系統(tǒng)或設(shè)置強制冷卻裝置，使較佳油液溫度保持在65℃以下；工程機械不許超過80℃；另一個因素可能是使用的油液與密封材料的相容性問題，應(yīng)按使用說明書或有關(guān)手冊選用液壓油和密封件的型式和材質(zhì)，以解決相容性問題，延長密封件的使用壽命。有一點機械常識的人都知道，能量會互相轉(zhuǎn)換的，而把這個知識運用到液壓系統(tǒng)上解釋液壓系統(tǒng)的功率損失是較好不過了，液壓系統(tǒng)功率一方面會造成能量上的損失，使系統(tǒng)的總效率下降，另一方面，損失掉的這一部分能量將會轉(zhuǎn)變成熱能，使液壓油的溫度升高，油液變質(zhì)，導(dǎo)致液壓設(shè)備出現(xiàn)故障。因此，設(shè)計液壓系統(tǒng)時，在滿足使用要求的前提下，還應(yīng)充分考慮降低系統(tǒng)的功率損失。揚州液壓驅(qū)動系統(tǒng)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2845333.html</p></div></div></div></div></div><div id="3u32gnu" class="page-right twoColRt"><div id="mbtqikr" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3ls7rjv" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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