DEVICE OF AUTO TENSION CONTROLL TYPE LOG-YARDING BASED ON EXCAVATOR

摘要

The present invention relates to excavator based automatic tension control type log-yarding apparatus. The present invention does not require an additional excavator to collect, transfer, and store logs since the present invention uses the working pressure of an excavator while operating a drum which ropes are wounded around. Also, the present invention can automatically drag collected logs with preset surface tension even when the logs are passing furrows unexpectedly since a pair of main and haul bag drums are syntonized. Thanks to this function, the present invention does not require a skyline to drag logs, so disassembling the apparatus is easy, thereby improving the productivity.