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鍵的選擇和鍵連接的強度校核計算

2014-09-03 10:31 作者:管理員11 來源:未知 瀏覽: 字號:

摘要:鍵的選擇和鍵連接的強度校核計算 鍵連接的強度校核按表5.3-2中所列公式。如強 度不夠,可采用雙鍵,這時應考慮鍵的合理布置:兩 個平鍵最好相隔180;兩個半圓鍵則應沿軸布置在 同一條直線上;兩個楔鍵夾角一般為90~120。雙 鍵連接的強度按1.5個鍵計算。如果輪轂

鍵的選擇和鍵連接的強度校核計算
    鍵連接的強度校核按表5.3-2中所列公式。如強
度不夠,可采用雙鍵,這時應考慮鍵的合理布置:兩
個平鍵最好相隔180°;兩個半圓鍵則應沿軸布置在
同一條直線上;兩個楔鍵夾角一般為90°~120°。雙
鍵連接的強度按1.5個鍵計算。如果輪轂允許適
當加長,也可相應地增加鍵的長度,以提高單健
連接的承載能力。但一般采用的鍵長不宜超過
(1.6~1.8)d。必要時加大軸徑或改用其他連接
方式。
    鍵材料采用抗拉強度不低于590MPa的鍵用鋼,
通常為45鋼;如輪轂系非鐵金屬或非金屬材料,鍵
可用20, Q235-A鋼等。
鍵連接的強度校核公式
鍵連接的許用應力
(責任編輯:laugh521521)
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