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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="pdr9jpn" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>麗水液壓系統(tǒng)維修,液壓系統(tǒng)</p><p><span>***更新：</span>2021-02-05 09:19:54</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="ljhpn9v" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海照翼機(jī)電設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>葛曉峰</p><p><span>郵箱: </span>313756836@qq.com</p><p><span>電話: </span>18551285988</p><p><span>傳真: </span>0512_86169086</p><p><span>網(wǎng)址: </span>http://www.shanghaizhaoyi.com</p><p><span>手機(jī): </span>0512-86169096</p><p><span>地址: </span>上海市松江區(qū)佘山鎮(zhèn)沈磚公路3129弄7號(hào)164室 </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="xvtrxd7" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="lz9h5tp" class="box"><p><p style="text-indent:25px">按用途分為單向閥和換向閥。單向閥只允許流體在管道中單向接通，反向即切斷。換向閥改變不同管路間的通、斷關(guān)系。根據(jù)閥芯在閥體中的工作位置數(shù)分兩位、三位等；根據(jù)所控制的通道數(shù)分兩通、三通、四通、五通等；根據(jù)閥芯驅(qū)動(dòng)方式分手動(dòng)，機(jī)動(dòng)，電動(dòng)，液動(dòng)等。圖2為三位四通換向閥的工作原理。P為供油口，O為回油口，A、B是通向執(zhí)行元件的輸出口。當(dāng)閥芯處於中位時(shí)，全部油口切斷，執(zhí)行元件不動(dòng)；當(dāng)閥芯移到右位時(shí)，P與A通，B與O通；當(dāng)閥芯移到左位時(shí)，麗水液壓系統(tǒng)維修，P與B通，A與O通，麗水液壓系統(tǒng)維修。這樣，麗水液壓系統(tǒng)維修，執(zhí)行元件就能作正、反向運(yùn)動(dòng)。液壓系統(tǒng)可分為兩類液壓傳動(dòng)系統(tǒng)和液壓控制系統(tǒng)。麗水液壓系統(tǒng)維修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水液壓系統(tǒng)維修,液壓系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/shzyjd12/637329361719101562/1698517.png"></div><p style="text-indent:25px">液壓系統(tǒng)就是以受壓液體作為工作介質(zhì)進(jìn)行能量傳遞，轉(zhuǎn)換的一個(gè)裝置叫叫液壓系統(tǒng)，也叫液壓站。液壓系統(tǒng)按工作特性不同可分為傳動(dòng)系統(tǒng)和液壓控制系統(tǒng)，按流循環(huán)方式不同可分為開式系統(tǒng)和閉式系統(tǒng)。液壓系統(tǒng)的設(shè)計(jì)一般指液壓傳動(dòng)系統(tǒng)的設(shè)計(jì)。由于液壓傳動(dòng)系統(tǒng)和液壓控制系統(tǒng)從結(jié)構(gòu)和工作原理而言本質(zhì)上沒有差別。液壓系統(tǒng)一般是屬于主機(jī)的一部分，所以在液壓系統(tǒng)的設(shè)計(jì)與主機(jī)的設(shè)計(jì)師緊密聯(lián)系的，當(dāng)從必要性，可行性，和經(jīng)濟(jì)性等幾方面對(duì)機(jī)械，電氣，液壓和氣動(dòng)等傳動(dòng)形式進(jìn)行全盤比較跟論證二者同時(shí)進(jìn)行。由于各種機(jī)器設(shè)備的功能不同，所以設(shè)計(jì)的著眼點(diǎn)不同，設(shè)計(jì)的步驟不同。阜陽液壓系統(tǒng)批發(fā)廠家液壓元件中的運(yùn)動(dòng)件均在油液中工作能自動(dòng)潤(rùn)滑，故元件使用壽命長(zhǎng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水液壓系統(tǒng)維修,液壓系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/shzyjd12/637329361688154296/2906327.png"></div><p style="text-indent:25px">壓力損失由于液體具有黏性，在管路中流動(dòng)時(shí)又不可避免地存在著摩擦力，所以液體在流動(dòng)過程中必然要損耗一部分能量。這部分能量損耗主要表現(xiàn)為壓力損失。壓力損失有沿程損失和局部損失兩種。沿程損失是當(dāng)液體在直徑不變的直管中流過一段距離時(shí)，因摩擦而產(chǎn)生的壓力損失。局部損失是由于管路截面形狀突然變化、液流方向改變或其他形式的液流阻力而引起的壓力損失。總的壓力損失等于沿程損失和局部損失之和。由于壓力損失的必然存在，所以泵的額定壓力要略大于系統(tǒng)工作時(shí)所需的較大工作壓力，一般可將系統(tǒng)工作所需的較大工作壓力乘以一個(gè)1.3~1.5的系數(shù)來估算。</p><p style="text-indent:25px"> 拆卸前，應(yīng)將液壓油排放干凈，弄清液壓回路內(nèi)是否有強(qiáng)余的壓力，拆卸裝有蓄能器的液壓系統(tǒng)時(shí)，必須把蓄能器所有能量全部釋放，在拆卸挖掘機(jī)、裝載機(jī)和推土機(jī)等液壓系統(tǒng)時(shí)，必須將挖斗或鏟斗放到地面或用支柱支好，拆卸時(shí)不能亂敲亂打，以防損壞螺紋和密封表面，在拆卸缸時(shí)，不應(yīng)將活塞硬性從缸筒中打出，以免損壞表面，正確的方法是拆卸前依靠液壓油壓力使活塞移到缸筒的末端，然后進(jìn)行拆卸，拆下的零件的螺紋部分和密封面都要用膠布纏好，以防碰傷拆下的小零件要分別裝入塑料袋中保存；沒有必要，不要將多聯(lián)閥體拆成單體，拆卸油管時(shí)，要及時(shí)做好標(biāo)簽，以防裝錯(cuò)，拆下的油管要用清洗設(shè)備將管內(nèi)沖洗干凈，在兩端堵上塑料塞，拆下的油泵、油、馬達(dá)和閥的孔口，也要用塑料塞塞好或用膠布粘蓋好。液壓油泵與控制閥間管道相連接。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="麗水液壓系統(tǒng)維修,液壓系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/shzyjd12/637329361742080078/7141814.png"></div><p style="text-indent:25px">執(zhí)行元件(如液壓缸和液壓馬達(dá))的作用是將液體的壓力能轉(zhuǎn)換為機(jī)械能，驅(qū)動(dòng)負(fù)載作直線往復(fù)運(yùn)動(dòng)或回轉(zhuǎn)運(yùn)動(dòng)?？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、液控單向閥、梭閥、換向閥等。根據(jù)控制方式不同，液壓閥可分為開關(guān)式控制閥、定值控制閥和比例控制閥。動(dòng)力元件的作用是將原動(dòng)機(jī)的機(jī)械能轉(zhuǎn)換成液體的壓力能。麗水液壓系統(tǒng)維修</p><p style="text-indent:25px">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。麗水液壓系統(tǒng)維修</p><p style="text-indent:25px">液壓是由兩個(gè)大小不同的液缸組成的，在液缸里充滿水或油。充水的叫"水壓機(jī)"充油的稱油壓機(jī)。兩個(gè)液缸里各有一個(gè)可以滑動(dòng)的活塞，如果在小活塞上加一定值的壓力，根據(jù)帕斯卡定律，小活塞將這一壓力通過液體的壓力傳遞給大活塞，將大活塞頂上去。設(shè)小活塞的橫截面積是S1，加在小活塞上的向下的壓力是F1。于是，小活塞對(duì)液體的壓強(qiáng)為P=F1/SI，能夠大小不變地被液體向各個(gè)方向傳遞"。大活塞所受到的壓強(qiáng)必然也等于P。若大活塞的橫截面積是S2，壓強(qiáng)P在大活塞上所產(chǎn)生的向上的壓力F2=PxS2，截面積是小活塞橫截面積的倍數(shù)。從上式知，在小活塞上加一較小的力，則在大活塞上會(huì)有很大的力，為此用液壓機(jī)來壓制膠合板、榨油、提取重物、鍛壓鋼材等。液壓原理在一定的機(jī)械、電子系統(tǒng)內(nèi)，依靠液體介質(zhì)的靜壓力，完成積壓、傳遞、放大，實(shí)現(xiàn)機(jī)械功能的輕巧化、科學(xué)化。利用液壓原理，可以構(gòu)建液壓傳動(dòng)系統(tǒng)，也可以構(gòu)建液壓控制系統(tǒng)。麗水液壓系統(tǒng)維修</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3174635.html</p></div></div></div></div></div><div id="ndprz97" class="page-right twoColRt"><div id="xlpdb9x" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="7tpnjf7" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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