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我地區(qū)發(fā)生東方紅-75/802拖拉機(jī)變速箱前支座固定螺孔掰壞的故障很多,分析其主要原因是:從后橫梁開始的兩側(cè)順梁變形彎曲,后橋下垂,變速箱上翹,其固定螺孔與后橫梁螺孔的接合面間產(chǎn)生較大間隙。未發(fā)現(xiàn)此故障前,常誤認(rèn)為固定螺母松動,便將螺母擰緊,則使變速箱固定螺孔處產(chǎn)生很大應(yīng)力,當(dāng)
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1 (4) Torque Strength Torque Wrench (0~150 kgf) (150~750 kgf) 購買 (150 ~300 kgf) ASME B18.6.3 / FIP1000 / SAE J78, J81, J1237, J933 / ISO 898-7, ISO 2702 / DIN 7500-1 / IFI-113 2. TORSIONAL STRENGTH TEST 扭力強(qiáng)度試驗 FIP 1000 Applicable To: All Tapping Screws. 適用範(fàn)圍:所有種類的自攻螺絲 Test Purpose: To detect parts having low strength which might twist off during driving or seating. 測試目的:為檢查零件是 否因 為扭力不足而在組裝或