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新聞資訊 >> 螺旋傘齒輪轉(zhuǎn)向箱間隙偏大原因分析-

螺旋傘齒輪轉(zhuǎn)向箱主、從動螺旋傘齒輪嚙合間隙不準確裝配時主、從動螺旋傘齒輪齒側(cè)嚙合間隙調(diào)整不當(dāng)，正常的嚙合間隙應(yīng)為0.20.4 mm。在實際裝配時，技術(shù)工人憑手感來確定間隙，易產(chǎn)生裝配誤差。從動螺旋傘齒輪與差速器聯(lián)接結(jié)構(gòu)不合理由于從動螺旋傘齒輪與差速器聯(lián)接采用開槽螺母加開口銷鎖緊，而螺栓的擰緊力矩往往達不到要求，開口銷又只能防脫落但不能防松動。使用一段時間后，由于振動等原因易使開槽螺母產(chǎn)生松動。引起從動螺旋傘齒輪與差速器聯(lián)接螺栓松動，導(dǎo)致從動螺旋傘齒輪竄動，引起齒面磨損和螺栓損壞齒面硬度不均勻、輪齒淬火變形齒面硬度不均勻、輪齒淬火變形也是造成齒面磨損的原因之一，從動螺旋傘齒輪直徑較大.厚度尺寸,屬盤類零件在淬火時易產(chǎn)生變形。齒面硬度不均勻。軸承預(yù)緊力的影響按原設(shè)計要求，差速器兩端圓錐滾子軸承在裝配時沒有施加預(yù)緊力。使用一段時間后，配合間隙增大。差速器總成與從動螺旋傘齒輪會產(chǎn)生軸向竄動，傳遞動力時產(chǎn)生碰撞，從而引起齒面磨損。螺旋角的影響原主、從動螺旋傘齒輪的螺旋角為15°，螺旋角較小，重疊系數(shù)小，從而使接觸面積小，在傳遞動力時接觸點受力增大。易引起疲勞磨損。
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