| 摘要 |
A hydraulic circuit for heavy equipment is provided to utilize the space efficiently by simplifying the hydraulic piping structure. A hydraulic circuit for heavy equipment comprises a variable displacement pump(1), a main relief valve installed at the discharge oil of the hydraulic pump upstream(2), an option working machine connected to the hydraulic pump(3), a main control valve including the spool(5) for the option working machine controlling the moving of the option working machine, and pause and redirection(4), a variable relief valves(14,15) which variably set the relief pressure required from the option working machine. |
