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ID number:713609
 
Author:
Evaluation:
Published: 04.01.2005.
Language: Latvian
Level: College/University
Literature: n/a
References: Not used
Extract

1.1.1. Sastiepuma spēks trosē
St=G/uT, (1.1.1)
kur G - kravas svars; G=16 kN,
uT - trices pārnesuma skaitlis; uT=3,
St=16/3=5,33 kN

1.1.2. Aprēķina spēks
Sapr=St K, (1.1.2)
kur K - krājuma koeficients; K=5…5,5,
Sapr=5,33 5,25=27,98 kN=2798 kG

1.1.3. Troses diametrs
Pēc literatūras (5) tabulas izvēlamies troses diamertu
dt=6,3 mm

1.1.4. Spoles diametrs
dsp=dt e, (1.1.3)
kur e - proporcionalitātes koeficients; e=20…25,
dsp=6,3 22=138,6 mm

1.1.5. Troses ātrums
vt=v uT, (1.1.4)
kur v - kravas celšanas ātrums; v=20 m/min,
vt=20 3=60 m/min=0,33 m/s.
Zobratu sazobi eļļo, iegremdējot dzīto zobratu eļļā 10 mm dziļumā. Nepieciešamais eļļas daudzums – 1,4 litri eļļas. Zobratam ar aploces ātrumu v=10,87 m/s pēc literatūras (1) 11.10. un 11.12. tab. pieņēmam autotraktoru eļļu AK 10 ar viskozitāti. …

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