pernc pully
DESCRIPTION
Tugas Kuliah Pernc PullyTRANSCRIPT
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TUGAS PERANCANAAN TRANSMISI SABUK
MK. Tugas Merancang Elemen Mesin II
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SOAL TUGAS
a= 160 cm
Puli-1
Puli-2
MotorSabuk
Sistem transmisi tenaga dengan sabuk datar (flat belt) digunakan
untuk memindahkan tenaga dari motor dengan poros dan puli-1 ke
poros dan puli-2. Tenaga yang dipindahkan sebesar 50 HP dengan
putaran poros dan puli-1, N1 = 300 RPM dan angka transmisi, i =
0,5 [ Putaran puli-2, N2 = 0,5 N1] .
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Diameter puli-2 , D2 = 150 cm, sedangkan jarak poros, a = 160 + ( 10 + X ) cm.
Tebal sabuk, 9 mm dengan masa jenis (densitas) sebesar 1,1 gram masa/
cm3, koefisien gesek sabuk terhadap puli sebesar 0,2 dan tegangan tarik
yang diijinkan sebesar 25 kg/ cm2.
Tentukan :
1. Diameter Puli-1, panjang belt dan sudut kontak
2. Tegangan belt pada sisi tegang (tight, T1) dan kendor (T2)
3. Lebar belt yang diperlukan, dengan memperhitungkan pengaruh gaya
sentrifugal.
4. Buat Gambar Teknik Hasil Rancangan Sistim Transmisinya
Ctt. ( X ) >> adalah ( 2 ) dua angka terakhir NIM masing-masing
TUGAS HARUS DI KUMPULKAN HARI RABU
TGL. 3 JUNI 2014 JAM 20.00
ATAU VIA E-MAIL
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1. A system of four pulley wheels are set up as shown in the diagram above. The driver pulley rotates in an anti-clockwise direction. In what direction does the output pulley wheel revolve ? Look at the animation below. The final output of pulley F is a clockwise movement.
SOAL KEDUA ( sambil belajar terjemahan )
2. If pulley ‘A’ (driver) rotates at 60 rpm what is the output rpm at ‘F
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To answer the question spit the pulleys into pairs and work out the velocity ration of each pair. Treat the pairs of pulleys as separate questions.Use the diameters when dividing and place the largest number on the top of the division.
Pulley wheel A has an rpm of 60. Pulley B is larger and so revolves at a lower rate than A. This means that the rpm of A is divided by the ratio of 2