Kinerja Traksi Roda Ramping Bersirip pada Berbagai Kombinasi Jumlah dan Sudut Sirip di Tanah Sawah Berlumpur

Ubaidillah ., Wawan Hermawan, Radite Praeko Agus Setiawan

Abstract


Abstract
The lugged wheel as tractive tools in Indonesian agriculture mainly used for land preparation, i.e. hand tractor operations. There are basic needs to develop narrow lugged wheel designed for post-planting application that has ability for inter-row paddy field operation. The aim of present study was to determine tractive performance of narrow lugged wheel. The tested wheel has 85.5 cm of outer diameter and 14 ×
8 cm of lug dimension, with three combinations of each lug spacing and lug angle. The experiment was conducted on an actual paddy field and some tractive performances were determined. The results indicate that tractive power output reached a peak at about 12 – 30 % of wheel slip, depending on the lug angle and lug spacing. The lugged wheel with 30o lug angle and 30o lug spacing showed higher tractive power
compared to other combinations. The tractive power output and tractive efficiencies of narrow lugged wheel were lower than that of the conventional wheel. The average wheel slip at the peak tractive efficiency was ranged 13 – 23 %, depending on the lug angle and lug spacing. Based on the performance, the narrow lugged wheel with 30o lug angle and 30o lug spacing is recommended for further development of narrow lugged wheel.

Abstrak
Roda besi bersirip sebagai komponen penghasil traksi pada pertanian di Indonesia utamanya digunakan pada kegiatan penyiapan lahan. Muncul kebutuhan mendasar untuk mengembangkan roda besi bersirip ramping yang dirancang untuk diaplikasikan pada kegiatan pasca-tanam yang memiliki kemampuan beroperasi di sela alur tanaman padi. Tujuan dari penelitian ini adalah menentukan performansi traksi dari
roda bersirip ramping untuk beroperasi di sela alur tanaman padi. Roda berdiameter luar 85.5 cm dan berdimensi sirip 14×8 cm, dengan tiga kombinasi pada masing-masing jarak antar sirip dan sudut sirip. Penelitian dilakukan secara aktual di lahan berlumpur dengan beberapa parameter performasi traksi yang
diamati. Hasil pengujian mengindikasikan daya tarik maksimum diperoleh pada rentang slip roda 12 – 30 %, bergantung sudut dan jarak sirip yang digunakan. Roda bersirip dengan sudut sirip 30o dan jarak antar sirip 30o menunjukkan tenaga tarik lebih besar dibandingkan dengan kombinasi lainnya. Daya tarik dan effisiensi traksi dari roda bersirip ramping lebih kecil dibandingkan dengan roda sangkar konvensional. Nilai rataan slip roda pada effisiensi traksi maksimum berkisar pada 13 – 23 %, bergantung sudut dan jarak sirip yang digunakan. Berdasarkan parameter performansi traksi, roda bersirip ramping dengan sudut sirip 30o dan jarak antar sirip 30o direkomendasikan untuk pengembangan lanjutan dari roda bersirip ramping.


Keywords


lugged wheel, narrow lug, paddy field, tractive performance

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