| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid pressure circuit and a work machine that can secure a necessary pump flow rate with a simple constitution even when allowing an accumulator to accumulate pressure a working fluid.SOLUTION: A fluid pressure circuit comprises: two boom cylinders 7c1, 7c2 which perform the same operation simultaneously with pressurized working oil supplied from main pumps 12, 13; a pressure accumulation circuit A which allows an accumulator 46 to accumulate pressure with the working oil pushed out from a head side of the boom cylinder 7c1 through a control valve 61 varying communication amounts of the head side of the boom cylinder 7c1 and the accumulator 46 according to a manipulated variable of a lever; and a recycling circuit B which breaks the communication between head sides of the boom cylinders 7c1, 7c2 when allowing the accumulator 46 to accumulate the pressure, and recycles the working oil pushed out from the head side of the boom cylinder 7c2 to the boom cylinders 7c1, 7c2 through a main control valve 62 communicating with the head side of the boom cylinder 7c2 and the respective rod sides of the boom cylinders 7c1, 7c2.SELECTED DRAWING: Figure 1 |
