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拉桿

拉桿是用來(lái)預緊組合而成，拉桿結構形式、預緊力選取、凸肩布置方式等會(huì )對轉子整體動(dòng)力學(xué)特性產(chǎn)生較大影響的一種結構。

關(guān)鍵詞：

拉桿結構變形之間應力較大直徑視為四次

所屬分類(lèi)：

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產(chǎn)品描述

　　拉桿是用來(lái)預緊組合而成，拉桿結構形式、預緊力選取、凸肩布置方式等會(huì )對轉子整體動(dòng)力學(xué)特性產(chǎn)生較大影響的一種結構。經(jīng)常出現的建筑材料上一種的結構，同時(shí)有許多的建筑結構或者材料是會(huì )建造成拉桿類(lèi)型的。如單層柱面網(wǎng)殼、衍射光柵刻劃機等。
　　靜態(tài)時(shí)，燃氣輪機拉桿凸肩和輪盤(pán)拉桿孔之間存在安裝間隙。在高轉速環(huán)境工作時(shí)，拉桿受離心力作用發(fā)生彎曲變形，凸肩與拉桿孔發(fā)生接觸，此時(shí)凸肩受到較大的擠壓作用，可將凸肩處視為固定鉸支，兩凸肩之間的拉桿視為靜定簡(jiǎn)支梁。由經(jīng)典材料力學(xué)中梁的撓曲線(xiàn)近似微分方程口41和本文的簡(jiǎn)支梁模型邊界條件，得到兩凸肩之間拉桿的最大撓度為，拉桿變形量與跨距Z的四次方成正比，與拉桿直徑d的四次方成反比。從強度角度進(jìn)行拉桿結構改進(jìn)，主要目的是有效地降低拉桿變形和拉桿應力。由于增大拉桿直徑d的方式受到輪盤(pán)徑向和周向空間的限制，因此，合理地增加凸肩數，從而減小拉桿凸肩跨距Z，應是實(shí)現拉桿結構改進(jìn)、降低拉桿變形和應力的優(yōu)化方向。

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ZBQ-E02型金屬雙極板、膜電極

ZBQ-E02型金屬雙極板、膜電極

第二代金屬雙極板設計雙密封結構，其密封結構采用模具注射成型，提高了電堆組裝后的穩定性，和使用壽命。減小了電堆的組裝的難度，提高生產(chǎn)效率。

ZBQ-D01型金屬雙極板、膜電極

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ZBQ-C01型金屬雙極板、膜電極

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推力桿，熱門(mén)也把它又叫做防傾桿，是懸架系統中的一種輔助性元件。

橋梁支座是連接橋梁上部結構和下部結構的重要結構部件，位于橋梁和墊石之間，它能將橋梁上部結構承受的荷載和變形（位移和轉角）可靠地傳遞給橋梁下部結構，是橋梁的重要傳力裝置。有固定支座和活動(dòng)支座兩種。橋梁工程常用的支座形式包括：油毛氈或平板支座、板式橡膠支座、球型支座、鋼支座和特殊支座等。

拉桿是用來(lái)預緊組合而成，拉桿結構形式、預緊力選取、凸肩布置方式等會(huì )對轉子整體動(dòng)力學(xué)特性產(chǎn)生較大影響的一種結構。

貨車(chē)牽引桿可分為3種結構形式，即一端旋轉一端固定結構、兩端固定結構及兩端旋轉結構。為了擁有良好的互換性，牽引桿兩端采用F型標準鉤尾結構。固定端尾部采用球面結構，并在尾端側面增加了具有自動(dòng)對中功能的柱形調整凸肩，使牽引桿在改善車(chē)輛通過(guò)曲線(xiàn)能力外還具有使車(chē)鉤自動(dòng)復位的功能；旋轉端尾部為全球面結構，可與套在其外部的旋轉套一起在旋轉尾框內做360度靈活轉動(dòng)。

橋梁支座是連接橋梁上部結構和下部結構的重要結構部件，位于橋梁和墊石之間，它能將橋梁上部結構承受的荷載和變形（位移和轉角）可靠地傳遞給橋梁下部結構，是橋梁的重要傳力裝置。有固定支座和活動(dòng)支座兩種。橋梁工程常用的支座形式包括：油毛氈或平板支座、板式橡膠支座、球型支座、鋼支座和特殊支座等。

橋梁支座是連接橋梁上部結構和下部結構的重要結構部件，位于橋梁和墊石之間，它能將橋梁上部結構承受的荷載和變形（位移和轉角）可靠地傳遞給橋梁下部結構，是橋梁的重要傳力裝置。有固定支座和活動(dòng)支座兩種。橋梁工程常用的支座形式包括：油毛氈或平板支座、板式橡膠支座、球型支座、鋼支座和特殊支座等。

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