农业机械学44

农业机械学44

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Unformatted text preview: 设设 V m —— 设设设设设设设 m/s 设 V p —— 设设设设设设 m/s t—— 设设设 m 设 Z—— 设设设设设设设设 D—— 设设设设设 m 设设设设设设设设设设设设设设设设设设设设设设设设 设设设设设设设设设设设设设设设设设 Z t 设设设设设设设设设设设 n/60 设设设设设设设设设设设设设设设设设 V m ×1 设设设设设设设设设设设 1 Z t n/60 V m ×1 1 Z t n/60 V m ×1 n = 60 V m / Z t ① ∵ V p =ωR= 设 2πn / 60 设 ×D / 2 = πDn / 60 ② Zt DV V m p / π = ∴ 设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设 设设 δ 设设设设设设 δ= 0.05~0.12 设设设设设设设设设设 Zt D V V m p ) 1 ( δ π + = ☆ 设设设设设设设设设设设设设设设 V p 设设设设设设设设设设设设设设设设设设 V m / V p 设设设设设设设设设设设设设设设设设设设设设设设设设设设设设设 d g d L - V p 设 设 2 = Zt D V V m p ) 1 ( δ π + = 设设设设设设设设设设设设设设设设设设设设设设设设设设设 L 设 12mm 设设设设设设设 d 设 8 mm 设设设 t 设 200mm 设设设设设 D 设 250 mm 设设设设设 Z 设 25 设设设设设设设设设设 V...
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农业机械学44

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