行業(yè)動態(tài)

滑動軸承所承受的載荷被傳遞到兩個滑車輪和滑座上

2023-01-05 閱讀次數(shù):

?滑動軸承一般由不銹鋼制成,所以它看起來非常光滑,沒有摩擦力和滑動阻力,但在工作時它會受到來自兩個油封之間流體壓力不平衡或兩個固定油封之間運(yùn)動摩擦?xí)r會引起振動和滑動阻力根據(jù)材料不同(如碳鋼或鑄鐵),滑動軸承類型不同。

這意味著使用滑座時有兩個工作點(稱為滑摩擦)需要進(jìn)行補(bǔ)償如果需要補(bǔ)償滑座之間的摩擦,應(yīng)在滑座與油封之間安裝一個內(nèi)圈(稱為滑動圈);如果需要補(bǔ)償滑座之間的滑動阻力,則應(yīng)在滑動圈中裝配滑動滾動軸承座(稱為滑動軸承座)來補(bǔ)償滑座之間的滑動阻力而不會在滑動軸承座表面產(chǎn)生振動(滑動軸承座)。

滑動軸承所承受的載荷被傳遞到兩個滑車輪和滑座上(圖1)

當(dāng)兩個球鉸固定在油封上時,滾動軸承所承受的載荷被傳遞到兩個滑車輪和滑座上滑車輪的載荷為軸向力,滑座的載荷為徑向力當(dāng)滑座為單滾珠軸承時,滾動軸承有一個很小的徑向力但是如果滑座為雙滾珠軸承時,徑向力很大滑座徑向力很小時,當(dāng)單滾珠軸承沒有滾動軸承時,它不會產(chǎn)生徑向力,因此軸向力也不會被傳遞到滑座中。

當(dāng)滑座為雙滾珠軸承時,球鉸在滑動時會產(chǎn)生徑向力和軸向力,但因為滑動軸承內(nèi)面沒有滾動軸承時兩者之間沒有任何作用當(dāng)球鉸轉(zhuǎn)動時就會產(chǎn)生徑向力和軸向力從而改變球鉸旋轉(zhuǎn)方向所以當(dāng)球鉸轉(zhuǎn)動時,轉(zhuǎn)動和滑動之間沒有任何關(guān)系。

但是,當(dāng)球鉸轉(zhuǎn)動時將會對滑座產(chǎn)生軸向力為了保證滑動軸承不會受到軸向力,應(yīng)在滑座內(nèi)部添加潤滑脂當(dāng)球鉸轉(zhuǎn)動時會從滑座表面上產(chǎn)生軸向力,因此滑動軸承也會受到軸向力,并且如果滑動軸承受到軸向力將會導(dǎo)致球鉸滾動方向改變并且使滑座向右旋轉(zhuǎn)。

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