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src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847452978516/8672920.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="i2sk6yc" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847452978516/8672920.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ogwu2wu" 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>廣東輕型軟管流體元件品牌,流體</p><p><span>***更新：</span>2021-01-26 15:18:01</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="kyg44gw" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海邁頜信息科技有限公司</a></p><p><span>聯(lián)系人：</span>王欽</p><p><span>郵箱: </span>834334323@qq.com</p><p><span>電話: </span>18917232386</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.maihetech.com</p><p><span>手機(jī): </span>021-62086881</p><p><span>地址: </span>上海市松江區(qū)九亭鎮(zhèn)九亭中心路1158號(hào)21幢708室-2A</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="2om2mca" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="oc202ec" class="box"><p><p style="text-indent:25px">聯(lián)軸器是指聯(lián)接兩軸或軸與回轉(zhuǎn)件，在傳遞運(yùn)動(dòng)和動(dòng)力過(guò)程中一同回轉(zhuǎn)，在正常情況下不脫開的一種裝置。有時(shí)也作為一種安全裝置用來(lái)防止被聯(lián)接機(jī)件承受過(guò)大的載荷，起到過(guò)載保護(hù)的作用。聯(lián)軸器又稱聯(lián)軸節(jié)。用來(lái)將不同機(jī)構(gòu)中的主動(dòng)軸和從動(dòng)軸牢固地聯(lián)接起來(lái)一同旋轉(zhuǎn)，并傳遞運(yùn)動(dòng)和扭矩的機(jī)械部件。有時(shí)也用以聯(lián)接軸與其他零件（如齒輪、帶輪等）。常由兩半合成，分別用鍵或緊配合等聯(lián)接，緊固在兩軸端，再通過(guò)某種方式將兩半聯(lián)接起來(lái)。聯(lián)軸器可兼有補(bǔ)償兩軸之間由于制造安裝不精確、工作時(shí)的變形或熱膨脹等原因所發(fā)生的偏移（包括軸向偏移、徑向偏移，廣東輕型軟管流體元件品牌、角偏移或綜合偏移）；以及緩和沖擊、吸振，廣東輕型軟管流體元件品牌。常用的聯(lián)軸器大多已標(biāo)準(zhǔn)化或規(guī)格化，一般情況下只需要正確選擇聯(lián)軸器的類型、確定聯(lián)軸器的型號(hào)及尺寸。必要時(shí)可對(duì)其易損的薄弱環(huán)節(jié)進(jìn)行負(fù)荷能力的校核計(jì)算；轉(zhuǎn)速高時(shí)還需驗(yàn)算其外緣的離心力和彈性元件的變形，廣東輕型軟管流體元件品牌，進(jìn)行平衡校驗(yàn)等。流體都有一定的可壓縮性。廣東輕型軟管流體元件品牌</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東輕型軟管流體元件品牌,流體" src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847452978516/8672920.png"></div><p style="text-indent:25px">當(dāng)來(lái)流速度接近或超過(guò)聲速時(shí)，會(huì)產(chǎn)生激波，帶來(lái)額外的激波阻力。本質(zhì)上說(shuō)，激波阻力也是一種壓差阻力，是由于激波的存在，使物體后半部的壓力恢復(fù)不夠而造成的。忽略黏性損失，當(dāng)沒(méi)有激波時(shí)，氣流在物體后半部減速對(duì)應(yīng)一個(gè)壓升Δp1 ；當(dāng)存在激波時(shí)，氣流經(jīng)過(guò)激波時(shí)部分損失了部分機(jī)械能，同樣的減速對(duì)應(yīng)的壓升Δp2 就會(huì)比Δp1 要小。因此，有激波時(shí)物體后半部的壓力要低一點(diǎn)，這就是激波阻力的來(lái)源。把物體前緣做成尖的可以減小激波錐角，從而減小激波帶來(lái)的損失，也就減小了激波阻力。船在水面行進(jìn)時(shí)會(huì)產(chǎn)生水面波，也會(huì)有波阻力，所以要做成尖頭的，而在水下行進(jìn)的潛艇則是圓頭的。廣東輕型軟管流體元件品牌對(duì)于完全沒(méi)有粘性的流體稱為理想流體。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東輕型軟管流體元件品牌,流體" src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847527988281/669264.png"></div><p style="text-indent:25px">流體性質(zhì)：質(zhì)量和密度流體和其他物質(zhì)一樣，具有質(zhì)量和重量。單位體積的流體所具有的質(zhì)量稱為流體的密度，用ρ來(lái)表示。在流體中任意點(diǎn)處的密度均相同，則該流體為均勻流體，均勻流體的密度表示為，ρ=m/v 。對(duì)于非均勻流體，因?yàn)楦鼽c(diǎn)處的密度不同，所以按下式計(jì)算的只是流體的平某一點(diǎn)處的密度應(yīng)為：dm——所取某微元件的的質(zhì)量（kg） dV——質(zhì)量為dm的微元件的體積（m3）流體的比容指的是單位質(zhì)量的流體所占有的體積，用v表示。顯然，它與密度互為倒數(shù)。</p><p style="text-indent:25px">很多事物在一樣的條件下，表現(xiàn)卻會(huì)完全相反，例如流體（能夠流動(dòng)的物質(zhì)），有的流體越攪越稀薄，有的卻越攪越粘稠，有的在這種情況下越攪越稀，在另一種情況下，行為就完全變了個(gè)樣！而且這樣的怪異現(xiàn)象時(shí)時(shí)就在我們身邊發(fā)生著。水是地球上常見的流體，很純的水不在上述怪異流體的圈子里，我們無(wú)論如何攪動(dòng)水，它都不會(huì)變稀薄也不會(huì)變粘稠。但是表現(xiàn)怪異的流體卻往往有水的參與。鐵磁流體或磁液，是一種新型的功能材料，它既具有液體的流動(dòng)性又具有固體磁性材料的磁性。是由直徑為納米量級(jí)（10納米以下）的磁性固體顆粒、基載液（也叫媒體）以及界面活性劑三者混合而成的一種穩(wěn)定的膠狀液體。流體力學(xué)同時(shí)又在工業(yè)、農(nóng)業(yè)、交通運(yùn)輸、天文學(xué)、地學(xué)、生物學(xué)、醫(yī)學(xué)等方面得到多應(yīng)用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東輕型軟管流體元件品牌,流體" src="https://tyunfile.71360.com/UploadFile/shanghaimaihe/637382847566328125/174557.png"></div><p style="text-indent:25px">流體性質(zhì)：壓縮性和膨脹性需要指出：在一般情況***體的壓縮系數(shù)和膨脹系數(shù)都很小。對(duì)于能夠忽略其壓縮性的流體稱為不可壓縮流體。不可壓縮流體的密度和重度均可看作常數(shù)。反之，對(duì)于壓縮系數(shù)和膨脹系數(shù)比較大，不能被忽略，或密度和重度不能看成常數(shù)的流體稱為可壓縮流體。但是，可壓縮流體與不可壓縮流體的劃分并不是確定的。例如，通常把氣體看成可壓縮流體。但是，當(dāng)氣體的壓力和溫度在整個(gè)流動(dòng)過(guò)程中變化很小時(shí)(如通風(fēng)系統(tǒng))，它的重度和密度的變化也很小，可近似地看為常數(shù)。再如，當(dāng)氣體對(duì)于固體的相對(duì)速度比在這種氣體中當(dāng)時(shí)溫度下的音速小得多時(shí)，氣體密度的變化也可以被忽略，對(duì)于能把氣體的密度看成常數(shù)的情況，可按不可壓縮流體來(lái)處理。研究流體性質(zhì)及其運(yùn)動(dòng)規(guī)律的學(xué)科，成為流體力學(xué)。廣東輕型軟管流體元件品牌</p><p style="text-indent:25px">流體的體積或密度隨溫度改變的性質(zhì)。所有流體也都具有熱膨脹性。廣東輕型軟管流體元件品牌</p><p style="text-indent:25px">絕大多數(shù)聯(lián)軸器均已標(biāo)準(zhǔn)化或規(guī)格化。設(shè)計(jì)者的任務(wù)是選用，而不是設(shè)計(jì)。選用聯(lián)軸器的基本步驟如下：根據(jù)傳遞載荷的大小，軸轉(zhuǎn)速的高低，被聯(lián)接兩部件的安裝精度等，參考各類聯(lián)軸器特性，選擇一種合用的聯(lián)軸器類型。 1、所需傳遞的轉(zhuǎn)矩大小和性質(zhì)以及對(duì)緩沖減振功能的要求。例如，對(duì)大功率的重載傳動(dòng)，可選用齒式聯(lián)軸器；對(duì)嚴(yán)重沖擊載荷或要求消除軸系扭轉(zhuǎn)振動(dòng)的傳動(dòng)，可選用輪胎式聯(lián)軸器等具有高彈性的聯(lián)軸器。 2、聯(lián)軸器的工作轉(zhuǎn)速高低和引起的離心力大小。對(duì)于高速傳動(dòng)軸，應(yīng)選用平衡精度高的聯(lián)軸器，例如膜片聯(lián)軸器等，而不宜選用存在偏心的滑塊聯(lián)軸器等。廣東輕型軟管流體元件品牌</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3021919.html</p></div></div></div></div></div><div id="syocawu" class="page-right twoColRt"><div id="e2emk4y" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gmai4ms" 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" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="gukioka" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" 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