PURPOSE: To exhibit hydraulic winding function of cable winder by providing a circuit for controlling rotation and up/down motion of blade and drum and contact/separation between guide roller, pickup boom and drum through a changeover valve.
CONSTITUTION: It is comprised of circuit A for operating a blade cylinder 10 through switching between the blade side of drum/blade changeover valve 25 and operating valve 18, circuit B for operating a drum motor 17 through switching between the drum side and valve 18 and circuit C for operating a drum lift cylinder 4' through switching between the drum lift side of changeover valve 48 and operating valve 39. Furthermore, circuit D for operating a guide roller motor 16 through switching between the guide roller side and operating valve 39, circuit E for operating a pickup boom cylinder 12 through switching of operating valve 50 and circuit F for contacting/separating between drive system 14 and drum 4 through switching an operating valve 59 and operating a drum drive cylinder 13 are provided. Through control of said operating circuits, cable winding function is exhibited.
YAMAZAKI TOSHIHIRO
TANAKA YOSHIMASA
YAMADA EIKI
