소형(小型) 동력경운기(動力耕耘機)의 포장작업성능(圃場作業性能)에 관한 연구(硏究)

Field Performance of a Miniature Power Tiller

극소형(極小形) 동력경운기(動力耕耘機)(3.5PS:KC-450)의 포장작업성능(圃場作業性能)을 조사분석(調査分析)하고 이에 대(對)한 이용범위(利用範圍)를 결정(決定)하고저 1980년(年) 3월(月)부터 1980년(年) 10월(月)까지 안성읍(安城邑) 석정동(石井洞) 시험포장(試驗圃場)에서 8PS(DT-85), 5PS(DT-40) 경운기(耕耘機)와 대비(對比)하여 耕耘(경운), 쇄토(碎土), 배토작업(培土作業)에 대(對)한 포장작업성능(圃場作業性能)을 조사(調査) 분석(分析)한 결과(結果)를 종합(綜合)하면 다음과 같다. 변속단수별(變速段數別) 작업능률(作業能率)과 포장작업(圃場作業) 효율비교(效率比較) 시험(試驗)에서는 1. 작업속도(作業速度)가 0.9m/sec일때 KC-450기(機)의 이경작업능률(犁耕作業能率)은 125분(分)/10a 무료 DT-85기(機)보다 26분(分)/10a 정도(程度)낮았다. 2. 작업속도(作業速度)를 1m/sec로 이경작업(犁耕作業) 할때에 KC-45기(機)의 포장작업성능(圃場作業性能)은 82%로 DT-85기(機)보다 5% 높았다. 3. 동일(同一) 작업속도(作業遠度)의 쇄토작업(碎土作業)에 있어서 작업능률(作業能率)은 DT-40기(機)와 DT-85기(機)가 높았고 포장작업효율(圃場作業效率)은 KC-450기(機)와 DT-40기(機)가 높았다. 4. 동일(同一) 작업속도(作業遠度)의 배사작업(培士作業)에 있어서 공시기(供試機) 모두 작업능률(作業能率)은 별차이(別差異)가 없었고 포장작업효율(圃場作業效率)은 KC-450기(機), DT-40기(機), DT-85기(機)의 순(順)으로 높았다. 구획규모별(區劃規模別) 작업능력(作業能力) 비교(比較) 시험(試驗)에서는 5. 구획(區劃) 면적(面積)이 클수록 작업능률(作業能率)은 공(共)히 향상(向上)되나 구획면적(區劃面積)이 8a이하(以下)에서는 KC-450기(機)가 작업능력면(作業能力面)에서나, 포장효율면에서 보다 유리(有利)하였다. 작업심도별(作業深度別) 작업능률(作業能率)은 비교(比較) 시험(試驗)에서는 6. DT-85로는 심경(深耕)의 능률적(能率的)인 중작업(重作業)에 유리(有利)하였고 KC-450기(機)는 경심(耕深) 12cm의 모든 작업(作業)에서 운전조작(運轉操作)이 용이(容易)하고 포장작업효율(圃場作業效率)이 타기종(他機種)에 비(比)하여 높았다. 7. 이하(以下)의 결과(結果)로 KC-450기(機)는 채소원예(菜蔬園藝), 약초(藥草), 연초(煙草), 비닐하우스등(等)의 소구획(小區劃), 소규모(小規模) 농작업(農作業)에 신기종(新機種)으로 개발(開發)이 요망(要望) 된다고 사료(思料)된다.

In order to investigate on the field performance of 3.5PS power tiller and to obtain the optimum using conditions of it, this experiment has been carried on the plowing operation, the rotary harrowing operation and the ridging operation that compared 3.5PS power tiller(KC-450) with the existing 5PS(DT-40) and 8PS(DT-85) power tiller. It has been performed at Suck Jung-Dong, Ansung Country, from March to October in 1980. The results of this field test were obtained as follows; 1. The plowing performance of KC-450 tiller was found to be 125min/10a that was lower than that of DT-85 tiller by 26min/10a in the effective plowing speed 0.9m/sec. 2. The field efficiency of KC-450 tiller was the highest among the power tillers as to be 82 persent that was higher than that of DT-85 tiller by 5 persent in the effective plowing speed 1m/sec. 3. The rotary harrowing performances of DT-40 tiller and DT-85 tiller were higher than that of KC-450 tiller in the rotary harrowing operation of the same speed, and the field efficiency of KC-450 tiller and DT-40 tiller were higher than that of DT-85 tiller in the rotary harrowing operation. 4. The ridging Performance of testing power tillers were nearly equality in the ridging operation of the same speed, and the field efficiency of testing tillers were higher KC-450 tiller than DT-40 tiller, DT-40 tiller than DT-85 tiller. 5. The work performance of power tiller increased with increase in the size of field area. Work performance and field efficiency of KC-450 tiller were higher than other tillers below 8a in field size 6. DT -85 tiller was more useful in deep plowing depth. But below 8a in field size KC-450 tiller was more easily operated and its field efficiency was higher 7. KC-450 tiller should be more useful to operate in the small size field or in the small scale farming and for the cultivation of vegetables, gardening plants, medicinal herb and tobacco plants, or for the cultivation in vinyl house.