Importance of capital cost reduction of chippers and their required productivity.
Importance of capital cost reduction of chippers and their required productivity.
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降低削片机资本成本及其所需生产率的重要性。
DOI：
10.1007/s10310-013-0426-x
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发表时间：
2014
影响因子：
1.5
通讯作者：
Mika Yoshida and Hideo Sakai
中科院分区：
文献类型：
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作者：
Masafumi Inaba;Yasushi Okamura;Cheng-Ming Chuong;Mika Yoshida and Hideo Sakai
研究了一种低投资的小型移动式削片机的生产率和削片成本。通过改变削片机的使用寿命来分析资本成本对降低削片成本的影响，当目标操作削片成本设定为250亿日元/m−3时，所研究的削片机的生产率为23.7万亿/m~3h−_1/片体积，燃料消耗为14.6%/m~3·−_1。结果表明，所研究的削片机的削片成本低于价格更高、生产率更高的磨床。然而，即使延长了−3的使用寿命，削片机和磨床都无法实现假设的2.5亿日元/m的目标成本。为了达到与被调查削片机相当的运营成本目标，有必要承受最初的抓斗装载机和劳动力成本，或者将磨床的生产率提高到33m3h−1。同样，如果生产率无法提高，研磨机将不得不降低资本成本和燃料消耗，以维持每米−325亿日元的削片成本。与桶研磨机相比，所研究的削片机的净切屑成本相对较小，特别是在使用寿命较短的情况下。调查表明，小规模林业引进一种低投资的移动式削片机是可行的，因为它不需要大量的材料，而且削片成本低。此外，从长远来看，降低资本成本或削片机的价格是更现实的成本节约。
The productivity and chipping cost of a low-investment small mobile chipper were investigated. The effect of capital cost on chipping cost reduction was analyzed by changing the service life of the chipper when assuming a target operational chipping cost set at 250 yen m−3. Productivity of the investigated chipper was found to be at 23.7 m3h−1in chip volume with fuel consumption at 14.6 L h−1. The results showed that the chipping cost of the investigated chipper was lower than that of a higher priced and more productive grinder. Neither chipper nor grinder, however, could achieve the assumed target cost of 250 yen m−3even if their service lives were extended. It was necessary to withstand the initial grapple loader and the labor costs or raise the grinder’s productivity to 33 m3h−1in order to reach a comparable operational cost target with that of the investigated chipper. Similarly, the grinder would have to reduce its capital cost and fuel consumption to maintain the chipping cost of 250 yen m−3ifproductivity could not be improved. Net chipping cost of the investigated chipper was relatively small compared to that of the tub grinder, especially under a shorter service lifespan. The investigation shows that it is feasible for small-scale forestry to introduce a low-investment mobile chipper because it does not require a large amount of material and has a low chipping cost. Moreover, lowering the capital cost or the price of chippers is a more realistic cost savings in the long term.