Development of a Harvester for Cable Logging

在日本，70%的森林面积坡度超过15度。因此，电缆测井系统被频繁使用。目前大约有120种不同的电缆测井系统被采用，其中30种适用于选择性切割、部分切割、完全切割和稀释作业。对于这些作业，当工人在采伐现场移动时，他必须携带一个挂在主线末端的吊钩。特别是，在陡峭的山区，搬运工面临着危险和艰苦的劳动。作者开发了一种用于电缆测井的收割机，使工人从这种危险而艰苦的劳动中解脱出来。该收割机由无线电控制小车和采树头组成。这些机器在操作和实际应用中进行了匹配和测试。因此，今后必须在其伐木作业的几个方面作出改进。很明显，这台新机器要投入实际使用还需要一段时间，但这台机器看来很有希望将来投入实际使用。

In Japan, seventy per cent of the forest area has a slope of more than 15 in gradient. Consequently, cable logging systems are frequently used. There are about 120 different cable logging systems that have been adopted and 30 of them are suitable for selective cutting, partial cutting, clear cutting, and thinning operations. For these operations, the chokerman has to carry a choker hook that is attached to the end of a main line as he moves about the logging site. In Particular, the chokerman is faced with dangerous and hard labor in steep mountainous areas.The authors developed a harvester for cable logging to release the chokerman from this dangerous and hard labor. This harvester is composed of a radio control carriage and a tree harvesting head. These machines were matched and then tested both in operational and practical applications. As a result, future improvements must be made regarding several points of its felling operation.It was clear that some time is necessary until the new machine is put into practical use, but the machine appears to show much promise for future practical use.